Patent Grant
11806679
The present application claims priority under 35 U. S. C. § 119 to Japanese Patent Application No. 2019-135676 filed on Jul. 23, 2019, the contents of which are incorporated herein by reference in its entirety.
The present disclosure relates to a method of dissolving a water-soluble component that is included in a soluble gas into a liquid.
Methods that use a static mixer to mix a gas and a gas or a gas and a liquid have been developed (See Japanese Laid-Open Patent Publication Nos. JP H09-267,023 A (1997), JP H07-42,620 A (1995), and JP H10-281,012 A (1998).
JP H09-267,023 A (1997) discloses a deodorization apparatus of mixing ozone and gas that contains a malodorous substance by using a static mixer. JP H07-42,620 A (1995) and JP H10-281,012 A (1998) disclose apparatuses that use a static mixer to mix fuel and air to be supplied to a spark ignition internal-combustion engine.
The static mixer disclosed in JP H09-267,023 will efficiently mix the gas, which contains a malodorous substance, and the ozone whereby effectively deodorizing the malodorous substance by an effect of ozone. The static mixers disclosed in JP H07-42,620 and JP H10-281,012 will evenly mix the fuel and air. The static mixers will reduce temperature unevenness of exhaust-gas from the spark ignition internal-combustion engine by supplying evenly mixed fuel and air to the engine to improve combustion efficiency whereby fully treating the exhaust gas through a three-way catalytic converter. The static mixers disclosed in the above Publications evenly mix a gas and a gas or fuel and air without using power.
As disclosed in the above Publications, the static mixers efficiently mix two fluids without consuming power. In particular, in mixture of a liquid and a gas, in the case in which the liquid is brought into a fine mist of liquid and in contact with the gas, a total contactable area between the liquid and the gas can be larger. In this case, a water-soluble component that is contained in the gas can be efficiently dissolved in the liquid.
Such a fine liquid mist can be produced by oscillating a liquid at an ultrasonic frequency so that a fine liquid mist is separated from the liquid by using oscillation energy or by spraying a liquid by using a spray device and exposing the liquid sprayed to an electric field (electrostatic atomization). Ultrasonic oscillation and electrostatic atomization have a feature that can produce a very fine liquid mist. Because a fine liquid mist can have a very large contactable area with a gas, a water-soluble component that is contained in the gas can be efficiently dissolved in the liquid mist. However, such a fine liquid mist will be likely to evaporate. Such a gas that evaporates from the fine liquid mist cannot dissolve the water-soluble component contained in the gas. For this reason, even if a fine liquid mist is produced to have a large total contactable area with a gas that contains water-soluble component, the water-soluble component, which is contained in the gas, will not be efficiently dissolved in the liquid mist. Because the fine liquid mist produced cannot efficiently dissolve the water-soluble component, which is contained in the gas, energy consumption to dissolve the water-soluble component will be large.
Therefore, the present disclosure has been developed for solving the disadvantage. It is an important object of the present disclosure to provide a method of efficiently dissolving a water-soluble component that is contained in a gas with smaller energy consumption.
A method according to the present disclosure is a method of dissolving a water-soluble component of a soluble gas in a liquid. The method includes production of a fine mist of liquid, production of mist-containing air, supply of a soluble gas and the mist-containing air, mixing of the soluble gas and the mist-containing air, contact between the liquid mist and the soluble gas, and aggregation of the liquid mist. The fine mist is produced from a liquid 9 by ultrasonic oscillation or electrostatic atomization in the production of a fine mist of liquid. The mist and carrier air is mixed to produce the mist-containing air in the production of mist-containing air. The soluble gas and the mist-containing air are supplied to a static mixer 2 in the supply of a soluble gas and the mist-containing air. The soluble gas and the mist-containing are mixed by using the static mixer 2 in the mixing of the soluble gas and the mist-containing air. The liquid mist is brought in contact with the soluble gas to dissolve a water-soluble component that is contained in the soluble gas into the liquid mist in the contact between the liquid mist and the soluble gas. The liquid mist that contains the water-soluble component dissolved aggregates and produces a solution that contains the water-soluble component dissolved in the aggregation of the liquid mist.
The method can efficiently dissolve a water-soluble component that is contained in a gas with smaller energy consumption.
A more complete appreciation of the present disclosure and many of the attendant advantages thereof will be readily obtained as the same becomes better understood by reference to the following detailed description when considered in connection with the accompanying drawings, wherein:
The following description will describe embodiments according to the present disclosure with reference to the drawings. In the following description, although terms for indicating particular directions or positions (e.g., “upper” and “lower”, and other terms including these terms) will be used as necessary for ease of understanding the present with reference to the drawings, the technical scope of the present disclosure is not limited by these terms. Portions attached with the same reference sign in different drawings show the portions or members same as or similar to each other.
It should be appreciated, however, that the embodiments described below are illustrations of a dissolution method to give a concrete form to technical ideas of the disclosure, and a dissolution method of the disclosure is not specifically limited to description below. Unless otherwise specified, any dimensions, materials, shapes and relative arrangements of the parts described below are given as an example and not as a limitation. In addition, the description for one embodiment can be applied to other embodiments or examples. Additionally, the sizes and the arrangement relations of the members in the drawings are occasionally exaggerated for ease of explanation.
In this specification, a “static mixer” refers to a mixer that mixes two or more fluids not by consuming power by itself but by using inertia forces of the fluids.
A method according to a first aspect of the present disclosure is a method of dissolving a water-soluble component of a soluble gas in a liquid. The method includes ultrasonic oscillation of a liquid, forcedly blowing of air, supply of a soluble gas and mist-containing air, mixing of the soluble gas and the mist-containing air, contact between the liquid mist and the soluble gas, and aggregation of the liquid mist. The liquid is oscillated at an ultrasonic frequency to produce a liquid column in the ultrasonic oscillation of a liquid. Air is forcedly blown to the liquid column produced to separate a mist of the liquid from the liquid column whereby producing mist-containing air in the forcedly blowing of air. The soluble gas and the mist-containing air are supplied to a static mixer in the supply of a soluble gas and mist-containing air. The soluble gas and the mist-containing are mixed by using the static mixer in the mixing of the soluble gas and the mist-containing air. The liquid mist is brought in contact with the soluble gas to dissolve a water-soluble component that is contained in the soluble gas into the liquid mist in the contact between the liquid mist and the soluble gas. The liquid mist that contains the water-soluble component dissolved aggregates and produces a solution that contains the water-soluble component dissolved in the aggregation of the liquid mist.
In particular, the dissolution method includes supplying a soluble gas that contains a water-soluble component and a liquid mist that is produced by ultrasonic oscillation to a static mixer, bringing the liquid mist, which has a large surface area, in contact with the soluble gas in the static mixer to dissolve a water-soluble component of the soluble gas into the liquid mist, and aggregating the liquid mist that contains the water-soluble component dissolved to produce a solution. In the dissolution method, the liquid mist and the water-soluble component of the gas are mixed in the static mixer, so that the water-soluble gaseous component is dissolved in the liquid mist. In the conditions in the static mixer, because a gaseous water-soluble component will be mixed with fine droplets of the liquid mist, the total contactable area between the liquid mist and the gaseous water-soluble component can be very large. As a result, the water-soluble component can be quickly dissolved in the liquid. When the liquid is brought in contact with the water-soluble component, the mist is required to be held in a liquid state until contact with the water-soluble component. If the mist evaporates, the water-soluble component will not be dissolved in the liquid even when the water-soluble component and the mist evaporating are efficiently mixed. The static mixer mixes the liquid mist as droplets and the water-soluble component to efficiently dissolve the water-soluble component in the liquid. The water-soluble component is efficiently dissolved in the liquid. After that, the liquid mist that contains the water-soluble component dissolved aggregates and produces a solution that contains the water-soluble component dissolved. Because a very large contactable area between the liquid mist and the water-soluble component can be provided in this method, the water-soluble component can be quickly dissolved in the liquid mist. In addition, the liquid mist aggregates and produces a solution that contains the water-soluble component dissolved. As a result, the water-soluble component can be very efficiently dissolved in the liquid. Consequently, in the case in which the water-soluble component is a malodorous gas, the malodorous gas can be efficiently dissolved in the liquid for deodorization.
A method according to a second aspect of the present disclosure is a method of dissolving a water-soluble component of a soluble gas in a liquid. The method includes spraying of a liquid, electrostatic atomization, mixing of a fine mist and carrier air, supply of a soluble gas and mist-containing air, mixing of the soluble gas and the mist-containing air, contact between the liquid mist and the soluble gas, and aggregation of the liquid mist. The liquid is sprayed by using a spray device in the spraying of a liquid. A sprayed mist of the liquid is exposed to an electric field to produce the fine mist in the electrostatic atomization. The fine mist and the carrier air are mixed to produce mist-containing air in the mixing of a fine mist and carrier air. The soluble gas and the mist-containing air are supplied to a static mixer in the supply of a soluble gas and the mist-containing air. The soluble gas and the mist-containing are mixed by using the static mixer in the mixing of the soluble gas and the mist-containing air. The liquid mist is brought in contact with the soluble gas to dissolve a water-soluble component that is contained in the soluble gas into the liquid mist in the contact between the liquid mist and the soluble gas. The liquid mist that contains the water-soluble component dissolved aggregates and produces a solution that contains the water-soluble component dissolved in the aggregation of the liquid mist.
In particular, the dissolution method includes supplying a soluble gas that contains a water-soluble component and a liquid mist that is produced by in the electrostatic atomization to a static mixer, bringing the liquid mist, which has a large surface area, in contact with the soluble gas in the static mixer to dissolve a water-soluble component of the soluble gas into the liquid mist, and aggregating the liquid mist that contains the water-soluble component dissolved to produce a solution. In the dissolution method, the liquid mist and the water-soluble component of the gas are mixed in the static mixer, so that the water-soluble gaseous component is dissolved in the liquid mist. In the conditions in the static mixer, because a gaseous water-soluble component will be mixed with fine droplets of the liquid mist, the total contactable area between the liquid mist and the gaseous water-soluble component can be very large. As a result, the water-soluble component can be quickly dissolved in the liquid. When the liquid is brought in contact with the water-soluble component, the mist is required to be held in a liquid state until contact with the water-soluble component. If the mist evaporates, the water-soluble component will not be dissolved in the liquid even when the water-soluble component and the mist evaporating are efficiently mixed. The static mixer mixes the liquid mist as droplets and the water-soluble component to efficiently dissolve the water-soluble component in the liquid. The water-soluble component is efficiently dissolved in the liquid. After that, the liquid mist that contains the water-soluble component dissolved aggregates and produces a solution that contains the water-soluble component dissolved. Because a very large contactable area between the liquid mist and the water-soluble component can be provided in this method, the water-soluble component can be quickly dissolved in the liquid mist. In addition, the liquid mist aggregates and produces a solution that contains the water-soluble component dissolved. As a result, the water-soluble component can be very efficiently dissolved in the liquid. Consequently, in the case in which the water-soluble component is a malodorous gas, the malodorous gas can be efficiently dissolved in the liquid for deodorization.
In a dissolution method according to a third aspect of the present disclosure, a flow rate of air for producing the mist-containing air can be adjusted to keep the liquid mist in droplets in the static mixer.
In this method, a mist in the static mixer can be held in a liquid state by adjusting a flow rate of the air for mist-containing air. A relative humidity inside a static mixers can be reduced by reducing a flow rate of air for producing the mist-containing air. An amount of liquid mist evaporating can be minimized in the static mixer that has a lower relative humidity. As a result, a concentration of the liquid mist can be high. In the case in which a high concentration of liquid mist is mixed with a water-soluble component, a total contactable area between the liquid mist and the water-soluble component can be larger. Consequently, the water-soluble component can be efficiently dissolved in the liquid mist. In particular, the static mixer can keep a relative humidity inside the static mixer greater than 100% (supersaturation state). As a result, evaporation of the liquid mist can be reliably minimized so that a concentration of the liquid mist can be particularly high. Consequently, the water-soluble component can be more efficiently dissolved in the liquid mist.
In a dissolution method according to a fourth aspect of the present disclosure, a temperature or humidity inside the static mixer can be detected, and a flow rate of air that is forcedly blown to the liquid column is adjusted n accordance with the temperature or humidity detected.
A temperature rise inside a static mixer will reduce a relative humidity inside the static mixer. Such a relative humidity drop inside the static mixer will increase an amount of liquid mist evaporating. For this reason, a flow rate of air that is forcedly blown to the static mixer is adjusted in accordance with a temperature or humidity that are detected inside the static mixer to reduce a relative humidity drop inside the static mixer to keep a high concentration of the liquid mist. As a result, the liquid mist, which has a large surface area, can be brought in contact with the water-soluble component. Consequently, the water-soluble component can be efficiently dissolved in the liquid mist. Air that is forcedly blown to a liquid column flows into the static mixer. If a flow rate of air that is forcedly blown into the static mixer forcedly is reduced, a flow rate of air that is forcedly blown to a liquid column is correspondingly reduced, and atomization efficiency decreases. The reason is that a mist cannot be efficiently separated from a surface of the liquid column by air blown to the liquid column. The dissolution method that detects a temperature or humidity inside the static mixer and adjusts a flow rate of air forcedly blown can control a flow rate of air blown to keep a relative humidity inside the static mixer greater than a predetermined value. Because the dissolution method that detects a temperature or humidity inside the static mixer and adjusts a flow rate of air forcedly blown can adjust an amount of air that is blown into the static mixer in consideration of both a concentration drop of liquid mist and production efficiency of a mist separated from the liquid column, atomization efficiency of the mist can be kept higher than a predetermined value without reducing a total contactable area between the liquid mist and the water-soluble component.
In a dissolution method according to a fifth aspect of the present disclosure, the soluble gas can contain air, and a flow rate of the soluble gas, which contains air, to the static mixer can be adjusted to keep the liquid mist in droplets in the static mixer.
A relative humidity inside a static mixer will vary depending on an amount of a soluble gas supplied. If an amount of a soluble gas supplied is increased, a relative humidity inside the static mixer is correspondingly reduced. As a result, a liquid mist is likely to evaporate. The reason is that an increase in an amount of the soluble gas supplied increases an amount of a gas component that is suppled as the soluble gas with respect to an amount of a liquid component as the mist collected into the static mixer. The method that controls a flow rate of the soluble gas supplied to the static mixer can minimize a flow rate of the soluble gas supplied to keep a relative humidity inside the static mixer higher than a predetermined value. As a result, a high concentration of liquid mist, which has a large surface area, can be brought in contact with the water-soluble component. Consequently, the water-soluble component can be efficiently dissolved in the liquid mist.
In a dissolution method according to a sixth aspect of the present disclosure, a temperature inside the static mixer can be detected, and the flow rate of the soluble gas, which contains air, to be supplied to the static mixer can be adjusted in accordance with the temperature detected.
In a dissolution method according to a seventh aspect of the present disclosure, a temperature inside the static mixer can be adjusted to keep the liquid mist in droplets in the static mixer.
In a dissolution method according to an eighth aspect of the present disclosure, an amount of the liquid mist to be supplied to the static mixer can be adjusted to keep the liquid mist in droplets in the static mixer.
In a dissolution method according to a ninth aspect of the present disclosure, a temperature inside the static mixer can be detected, and the amount of the liquid mist to be supplied to the static mixer can be adjusted in accordance with the temperature detected.
In a dissolution method according to a tenth aspect of the present disclosure, a temperature of the soluble gas to be supplied to the static mixer can be adjusted to keep the liquid mist in droplets in the static mixer.
In a dissolution method according to an eleventh aspect of the present disclosure, air can be supplied to the soluble gas, and an amount of the air to be supplied to the soluble gas can be adjusted. In addition, the temperature of the soluble gas to be supplied to the static mixer can be adjusted by the air-supply-amount adjustment.
In a dissolution method according to a twelfth aspect of the present disclosure, the water-soluble component of the soluble gas can be at least one selected from the group consisting of a malodorous component, ammonia, alcohol, volatile organic compound (VOC), soot, NOX, and SOX.
In a dissolution method according to a thirteenth aspect of the present disclosure, the liquid in which the water-soluble component of the soluble gas is dissolved can be water, alkaline water, or acid water.
The apparatus shown in
The dissolution apparatus 100 shown in
The atomization chamber 10 is a closed chamber for accumulating the liquid 9 the surface of which is kept at a predetermined liquid surface level W. The mist is produced from the liquid 9 in the atomization chamber 10. The mist produced is mixed with the carrier gas, and discharged as the mist-containing air from the atomization chamber 10. The atomization chamber can be not fully closed but can be partially opened. The atomization chamber 10 shown in
The liquid 9 is fed by a feed mechanism 15 to the atomization chamber 10. The feed mechanism 15 shown in
The ultrasonic oscillator 11 is fastened on a bottom plate 18 of the atomization chamber 10 to water-tightly close an opening 18A of the bottom plate 18 as shown in an enlarged cross-sectional view of
The blower 20 blows air as a carrier gas that carries the mist toward the liquid column P, which is produced by ultrasonic oscillation, as shown in
The ultrasonic oscillator 11 is horizontally arranged in the atomizer 1 as discussed above to vertically protrude the liquid column P from the liquid surface level W. The ultrasonic oscillator 11 can be inclined in the atomizer 1 to protrude the liquid column P in a slant direction from the liquid surface level W. Although the illustrated atomizer 1 has been illustratively described to include one ultrasonic oscillator 11, the atomizer 1 can have two or more ultrasonic oscillators. In this case, an amount of mist produced will be correspondingly increased. Also, an amount of mist produced can be adjusted by adjusting power supplied to the ultrasonic oscillator 11.
The atomizer 1 shown in
The static mixer 2 efficiently mixes the mist-containing air supplied and the soluble gas so that the water-soluble component of the soluble gas can be dissolved in droplets of the liquid mist. The dissolution apparatus 100 shown in
Evaporation of the mist can be minimized in the static mixer 2 by the soluble gas that has a lower temperature and is supplied to the static mixer 2. The reason is that a high-temperature soluble gas brings the static mixer 2 to a high temperature and reduces a relative humidity inside the static mixer 2, and as a result the mist becomes likely to evaporate. A temperature of the soluble gas can be lowered by outside air that has a temperature lower than the soluble gas and is supplied from the outside-air fan 6. Also, the soluble gas can be cooled by the cooler 7. Accordingly, a temperature of the soluble gas can be brought to a lower temperature when the soluble gas reaches the static mixer 2.
The static mixer 2 mixes the soluble gas and the mist-containing air that flow through the static mixer 2. The static mixer 2 includes a tube member 25 and elements 26, which are arranged in the tube member 25 and form a plurality of in-line stages, as shown in a schematic perspective view of
The mist in a liquid state can dissolve the water-soluble component of the soluble gas. If the mist evaporates, the mist that has evaporated and is not liquid cannot dissolve the water-soluble component. In order to efficiently dissolve the water-soluble component of the soluble gas in the liquid, the static mixer 2 is required to flow the mist while minimizing evaporation of the mist. Evaporation of the mist can be reduced by supersaturation inside the static mixer 2, in other words, by bringing an interior of the static mixer 2 to a temperature lower than a dew-point temperature of the liquid. In order to minimize evaporation of the mist in the static mixer 2, the static mixer 2 includes a temperature sensor 27, which detects a temperature inside the static mixer 2, and a humidity sensor 28, which detects humidity inside the static mixer 2.
The controller 4 adjusts an environment in the static mixer 2 in accordance with signals that are provided from the temperature sensor 27 and the humidity sensor 28 to conditions that can minimize evaporation of the mist. The controller 4 shown in
Atomization efficiency of the atomizer 1 can be high if a flow rate of air blown toward the liquid column P and a temperature of the air are high. Also, the atomization efficiency can be high if the liquid 9 is heated to a high temperature. The controller 4 adjusts a flow rate and a temperature of air to be supplied to the liquid column P in consideration of the atomization efficiency. If the flow rate and the temperature of the air are high, the atomization efficiency can be high but an evaporation rate of the mist in the static mixer 2 will increase. For this reason, the controller 4 adjusts the flow rate and the temperature of air to be supplied by the atomizer 1 to the liquid column P in accordance with a temperature and a humidity that are detected in the static mixer 2. The controller 4 preferably adjusts the flow rate and the temperature of the air to high values to increase the atomization efficiency while keeping the air inside the static mixer 2 supersaturated or almost supersaturated with moisture to minimize evaporation of the mist. The atomizer 1 that includes the liquid heater 22 adjusts the liquid to be heated to a high temperature within a range that keeps the air inside the static mixer 2 supersaturated or almost supersaturated with moisture.
An evaporation amount of the mist in the static mixer 2 varies depending on a flow rate and a temperature of the soluble gas to be supplied to the static mixer 2. If the soluble gas of a high temperature gas containing steam, and is cooled to a temperature lower than a dew-point temperature before supplied to the static mixer 2, evaporation of the mist in the static mixer 2 is not enhanced when the soluble gas is supplied. If the soluble gas has that a temperature higher than a dew-point temperature and a low relative humidity is supplied to the static mixer 2, a relative humidity inside the static mixer 2 decreases, and as a result evaporation of the mist is enhanced. In particular, if a large amount of the soluble gas that has a low humidity is supplied to the static mixer 2, a relative humidity inside the static mixer 2 will drop. To address such a relative humidity drop in which evaporation of the mist is enhanced, the soluble gas is cooled to increase a relative humidity inside the static mixer 2, or a relative humidity of the mist-containing air supplied from the atomizer 1 is reduced to keep a relative humidity inside the static mixer 2 higher than a predetermined value.
The soluble gas that has a high temperature can be cooled by a heat exchanger (not shown), and then by supplying low-temperature outside air that has a temperature lower than the soluble gas before supplied to the static mixer 2 as shown in
The mist that dissolves the water-soluble component of the soluble gas aggregates and is collected in the collector 3. The cyclone 3A is arranged as the collector 3 shown in
In the aforementioned dissolution apparatus 100, the soluble gas and the mist-containing air are supplied to the static mixer 2 so that the water-soluble component of the soluble gas is dissolved in the liquid mist in the static mixer 2, and the mist that dissolves the water-soluble component aggregates and is collected in the cyclone 3A of the collector 3. Finally, a solution that contains the water-soluble component dissolved can be produced. The liquid is oscillated at an ultrasonic frequency to produce a liquid column P, which protrudes from the surface level, in the atomizer 1, and air is forcedly blown by the blower 20 to the liquid column P to separate a mist of the liquid from the liquid column P whereby producing mist-containing air. The soluble gas and the mist-containing air are supplied to the static mixer 2 so that the soluble gas and the mist-containing are mixed. The liquid mist is brought in contact with the soluble gas to dissolve the water-soluble component that is contained in the soluble gas into the liquid mist. The liquid mist that contains the water-soluble component dissolved aggregates and produces a solution that contains the water-soluble component dissolved in the cyclone 3A of the collector 3. The controller 4 adjusts a flow rate and a temperature of the carrier gas that is blown into the atomizer 1, a temperature of the liquid that can be heated, and a flow rate and a temperature of the soluble gas in accordance with a temperature and a humidity that are detected in the static mixer 2 so as to keep the interior of the static mixer 2 to a temperature preferably lower than a dew-point temperature while efficiently producing the mist from the liquid. The mist and the soluble gas are brought in contact with each other in the static mixer 2 so that the water-soluble component is dissolved in the mist. The cyclone 3A collects the mist that contains the water-soluble component dissolved.
Although the aforementioned dissolution apparatus has been described to oscillate a liquid at an ultrasonic frequency to produce a fine mist of the liquid, a fine mist can be produced by spraying a liquid from a spray device and by exposing the liquid sprayed to an electric field. A dissolution apparatus 200 shown in
The spray device 41 includes a plurality of atomization units 50, which are arranged in the spray case 47 of the electrostatic atomizer 40 as shown in
The nozzle block 54 includes a flange 54a on its outer peripheral part. The capillary tubes 53 are arranged in a central part of the nozzle block 54. The nozzle block 54 shown in
The through holes 54x are arranged in a plurality of ring-shaped lines on the plate part 54B of the nozzle block 54 shown in
The aforementioned atomization unit 50 includes a number of narrow tubes as the capillary tubes 53. Each capillary tube 53 sprays the liquid to produce the mist. The atomization unit can include a perforated plate that has a number of fine spraying holes instead of capillary tubes. The perforated plate can be formed from an electrically-conductive plate such as a metal plate. The fine spraying holes of the perforated plate can be formed in the metal plate by a laser. The perforated plate can be formed of a sintered metal that has pores as fine spraying holes. The electrically-conductive perforated plate is connected to a high-voltage power supply, and can apply a high voltage between atomization electrodes. The perforated plate is not necessary to have electrical conductivity. The reason is that the liquid has electrical conductivity so that fine liquid droplets are produced from the liquid that is sprayed from the spraying holes by an electrostatic effect when a high voltage is applied between the liquid sprayed and the atomization electrodes. For this reason, an open-cell foam that has fine spraying holes such as plastic foam can be used as the perforated plate.
The atomization electrodes 42 are electrically insulated from the spray device 41 in the spray case 47. A high voltage is applied to the atomization electrode 2 with respect to the spray device 41. For this reason, each atomization electrode 42 and the spray device 41, which are fastened to the spray case 47, are electrically insulated from to each other. In the case in which the spray device of the electrostatic atomizer is fastened to the spray case that is formed of metal and is not electrically insulated from the spray case, the atomization electrodes are electrically insulated from the metal spray case. In the case in which the spray device of the electrostatic atomizer is electrically insulated from the spray case that is formed of metal, the atomization electrodes are fastened to the metal spray case. It is noted that both the spray device and the atomization electrodes, which are fastened to the spray case, can be electrically insulated from the spray case.
An electrical discharge occurs between the atomization electrodes 42 and the electrical discharge protrusions 51 of the spray device 41 so that fine liquid droplets are produced from the liquid that is sprayed from the spray device 41. The atomization electrodes 42 are spaced away from the fine spraying holes 52 on an upstream side in a mist-spraying direction. The atomization electrodes 42 shown in
The atomization electrode can be formed of a metal net. The atomization electrodes that are formed of a metal net are spaced away from the electrical discharge protrusions 51 in a mist-spraying direction. In the case in which the atomization electrodes are formed of a metal net, a uniform electrical discharge can occur between the atomization electrodes and the electrical discharge protrusions 51 so that fine liquid droplets are produced from the liquid that is sprayed from the fine spraying holes 52.
The atomization electrodes 42 are positioned on the upstream side with respect to their corresponding atomization units 50. In the electrostatic atomizer 40 shown in
A high voltage power supply 43 applies a high voltage between the atomization units 50 and the atomization electrodes 42. The high voltage power supply 43 is a DC power supply. Positive and negative sides of the high voltage power supply 43 are connected to the atomization electrodes 42 and the atomization units 50, respectively. Alternatively, positive and negative sides of the high voltage power supply 43 are connected to the atomization units and the atomization electrodes, respectively.
The electrostatic atomizer 40 shown in
The air chamber 62 is created by a closed structure, and is coupled to the blower 67, which is a gas feeding mechanism, so that the carrier gas that is forcedly blown by the blower 67 passes through the blowing holes 64, which are formed in the partitioning wall 63, into the spray chamber 61. The blowing holes 64 are slit through holes, which are arranged between the atomization units 50. The carrier gas that is forcedly blown can be blown along peripheral parts of the atomization units 50 through the blowing holes 64. The blowing holes are not limited to slit holes. A plurality of circular or polygonal through holes can be formed as the blowing holes between the atomization units so that the carrier gas can be blown toward parts between the atomization units through the blowing holes. The carrier gas that is blown into the spray chamber 61 through the blowing holes 64 carries the mist. The blowing hole 64 is formed between the atomization units 50 adjacent to each other in the spray case 47 shown in
The atomization units 50 of the spray device 41 are fastened to the partitioning wall 63 on the spray chamber 61 side to spray the liquid into the spray chamber 61 as a shown in
The dissolution method according to the present disclosure can be used a dissolution method that dissolves into a liquid a water-soluble component (e.g., malodorous component, ammonia, alcohol, volatile organic compounds (VOC), etc.) included in a soluble gas, and collects or remove the water-soluble component.
| Number | Date | Country | Kind |
|---|---|---|---|
| 2019-135676 | Jul 2019 | JP | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/JP2020/028565 | 7/22/2020 | WO |
| Publishing Document | Publishing Date | Country | Kind |
|---|---|---|---|
| WO2021/015274 | 1/28/2021 | WO | A |
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| Number | Date | Country | |
|---|---|---|---|
| 20220274071 A1 | Sep 2022 | US |
