Patent Application
20200299167
The present application claims priority to Chinese Patent Application No. 201610272378.6 filed to State Intellectual Property Office on Apr. 27, 2016 and entitled “GLASS TANK FURNACE HAVING A HIGH MELTING RATE”, the disclosure of which is incorporated herein by reference in its entirety.
The present invention relates to the technical field of glass tank furnaces, and in particular to a glass tank furnace having a high melting rate.
At present, because of the shortage of energy sources, the energy-intensive thermal equipment such as glass tank furnaces are becoming costly. The length-to-width ratio of a unit furnace in China in the present stage is generally controlled to be 3 to 3.3, and the melting rate (the melting rate refers to the amount of glass melted by per square meter melting area of the unit furnace per day, the glass flow is an actual discharge amount of the furnace (in tons), and the melting rate (ton/day*m2) is an index for reflecting the technical level of the unit furnace) is generally below 2.4 ton/day*m2. Due to the backwardness of the equipment and the combustion process as well as too large area of the furnace and high temperature on the bottom, there are various disadvantages such as low melting rate, high investment, high energy consumption, low operating efficiency and low yield.
Therefore, in view of the above problems, it is necessary to provide a glass tank furnace having a high melting rate in order to overcome the disadvantages such as low melting rate and high energy consumption of the tank furnace.
In order to solve the above technical problem, the present invention provides a glass tank furnace having a high melting rate.
In the glass tank furnace having a high melting rate in the present invention, a length to width ratio of the glass tank furnace having a high melting rate is 2.3 to 2.8.
The glass tank furnace having a high melting rate has the feature:
a range of a depth of the tank furnace is 1 m to 1.2 m.
The glass tank furnace having a high melting rate has the feature:
pure oxygen burners are provided in the glass tank furnace having a high melting rate, and electrodes are provided on the bottom of the glass tank furnace having a high melting rate.
The glass tank furnace having a high melting rate has the feature:
the pure oxygen burners are mounted in one or more of the following ways: mounted on a crown, horizontally mounted on breast walls, and obliquely mounted on the breast walls.
The glass tank furnace having a high melting rate has the feature:
a number of the pure oxygen burners is 5 to 16.
The glass tank furnace having a high melting rate has the feature:
multiple rows of pure oxygen burners are provided in the glass tank furnace having a high melting rate, and a number of the pure oxygen burners in a middle row is less than a number of the pure oxygen burners in a boundary row.
The glass tank furnace having a high melting rate has the feature:
the pure oxygen burners are arranged in multiple rows, and the pure oxygen burners in adjacent rows are arranged alternately.
The glass tank furnace having a high melting rate has the feature:
the electrodes are arranged on the bottom in 4 to 8 rows, and there are 4 to 6 electrodes in each row.
The glass tank furnace having a high melting rate has the feature:
a weir and bubbles are provided on the bottom of the glass tank furnace having a high melting rate, a number of the weirs is one or more, and the bubbles are disposed before, behind or on the weir.
In the present invention, by reducing the area of a furnace and optimizing the length-to-width ratio thereof, the heat loss of the tank furnace is reduced. By designing an appropriate liquid glass tank depth, the temperature of a furnace bottom is improved and the quality of the liquid glass is guaranteed. By providing pure oxygen burners and auxiliary electric melting, sufficient energy is guaranteed, the melting capability and the heating efficiency of the tank furnace are improved, and energy consumption and the discharge amount of carbon dioxide are significantly reduced. Weirs arranged on the furnace bottom improve the outlet temperature of the liquid glass, reduce energy consumption, lower the temperature of the furnace bottom in the electrode area, prolong the service life of the furnace bottom, and guarantee an increased proportion of auxiliary power. By means of the design of bubbles at the furnace bottom, the backflow strength of the liquid glass, the melting capability, and the quality of the liquid glass are improved. In conclusion, the present invention can effectively improve the melting rate of tank furnaces and reduce the energy consumption.
The accompanying drawings incorporated into the description and constituting a part of the description show the embodiments of the present invention, and are used for explaining the principle of the present invention in combination with the description. In these accompanying drawings, similar reference numerals represent similar elements. The accompanying drawings described hereinafter are some of but not all of the embodiments of the present invention. A person of ordinary skill in the art can obtain other drawings according to these drawings without paying any creative effort.
To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be described below clearly and completely in conjunction with the accompanying drawings in the embodiments of the present invention. Apparently, the described embodiments are some of but not all of the embodiments of the present invention. All other embodiments obtained by a person of ordinary skill in the art without paying any creative effort on the basis of the embodiments in the present invention shall fall into the protection scope of the present invention. It is to be noted that, the embodiments in the present application and the features in the embodiments can be combined at will if not conflict.
In the present invention, the length-to-width ratio of the glass tank furnace having a high melting rate is 2.3 to 2.8. In the prior art, for majority of tank furnaces, the length-to-width ratio is about 3, and the energy consumption of the furnace is substantially above 1000 kCal/kg. Experimental data has shown that, when the length-to-width ratio of the tank furnace in the present invention is 2.3 to 2.8, the energy consumption of the tank furnace having a high melting rate is below 1000 kCal/kg or even below 900K kCal/kg. Given a constant melting area, when the length-to-width ratio of the tank furnace is 2.3 to 2.8, it is advantageous for the optimum arrangement of electric boosting electrodes. By keeping the current in a preferred range while ensuring the desired power, the effective power will be higher, that is, the ratio of the actual power to the installed power will be higher.
The tank furnace has a depth of 1 m to 1.2 m. In the prior art, for majority of tank furnaces, the depth is above 1.2 m, and the energy consumption of the furnace is above 1100 kCal/kg. However, when the depth of the tank furnace in the prior art is below 1 m, due to the too small depth, the temperature of the bottom is high, and the utilization of electric boosting is low; moreover, the electric boosting accounts for less than 17% of the total energy consumption when the depth is below 1 m. In the present invention, for the tank furnace having a depth of 1 m to 1.2 m, the electric boosting accounts for more than 20% of the total energy consumption.
Pure oxygen burners are provided in the glass tank furnace having a high melting rate, and electrodes are provided on the bottom of the glass tank furnace having a high melting rate. The pure oxygen burners are mounted in one or more of the following ways: mounted on a crown, horizontally mounted on breast walls, and obliquely mounted on breast walls. There are 5 to 16 pure oxygen burners. Multiple rows of pure oxygen burners are provided in the tank furnace, and the number of pure oxygen burners in a middle row is less than the number of pure oxygen burners in a boundary row. The pure oxygen burners are arranged in multiple rows, and the pure oxygen burners in adjacent rows are arranged alternately. The electrodes are arranged on the bottom in 4 to 8 rows, and there are 4 to 6 electrodes in each row.
A weir and bubbles are provided on the bottom of the glass tank furnace having a high melting rate. There will be one or more weirs, and the bubbles are disposed before, behind or on the weirs.
In the present invention, by reducing the area of a furnace and optimizing the length-to-width ratio thereof, the heat loss of the tank furnace is reduced. By designing an appropriate liquid glass tank depth, the temperature of a furnace bottom is improved and the quality of the liquid glass is guaranteed. By providing pure oxygen burners and auxiliary electric melting, sufficient energy is guaranteed, the melting capability and the heating efficiency of the tank furnace are improved, and energy consumption and the discharge amount of carbon dioxide are significantly reduced. Weirs arranged on the furnace bottom improve the outlet temperature of the liquid glass, reduce energy consumption, lower the temperature of the furnace bottom in the electrode area, prolong the service life of the furnace bottom, and guarantee an increased proportion of auxiliary power. By means of the design of bubbles at the furnace bottom, the backflow strength of the liquid glass, the melting capability, and the quality of the liquid glass are improved. In conclusion, the present invention can effectively improve the melting rate of tank furnaces and reduce the energy consumption.
The present invention will be described below by specific embodiments.
In this specific embodiment, horizontal pure oxygen burners are provided.
Referring to
In this specific embodiment, oblique pure oxygen burners are provided.
As shown in
In this specific embodiment, pure oxygen burners are provided on a crown, called crown-mounted pure oxygen burners 11.
As shown in
In this specific embodiment, both horizontal pure oxygen burners and oblique pure oxygen burners are provided.
As shown in
In this specific embodiment, both horizontal pure oxygen burners and crown-mounted pure oxygen burners are provided.
Referring to
In this specific embodiment, horizontal pure oxygen burners, oblique pure oxygen burners and crown-mounted pure oxygen burners are provided.
As shown in
The contents described above can be implemented independently or jointly in various ways, and these variants shall all fall into the protection scope of the present invention.
It is to be noted that, as used herein, the term “comprise/comprising”, “contain/containing” or any other variants thereof is non-exclusive, so that an object or device containing a series of elements not only contains these elements, but also contains other elements not listed explicitly, or further contains inherent elements of this object or device. Without more restrictions, an element defined by the term “comprising . . . ” does not exclude other identical elements in the object or device including this element.
The foregoing embodiments are merely used for describing the technical solutions of the present invention and not intended to constitute any limitations thereto. The present invention has been described in detail with reference to the preferred embodiments. It should be understood by a person of ordinary skill in the art that modifications or equivalent replacements can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and these modifications or equivalent replacements shall fall into the scope defined by the claims of the present invention.
In the present invention, by reducing the area of a furnace and optimizing the length-to-width ratio thereof, the heat loss is reduced; moreover, the melting rate of the tank furnace can be effectively improved, and the energy consumption can be reduced.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201610272378.6 | Apr 2016 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2016/096473 | 8/24/2016 | WO | 00 |
