The present disclosure is generally related to particulate detection for industrial facilities, and associated systems and methods. In particular embodiments, the present disclosure is generally related to collection and/or separation device leak detection for coke manufacturing facilities.
Coke is a solid carbon fuel and carbon source used to melt and reduce iron ore in the production of steel. In one process, known as the “Thompson Coking Process,” coke is produced by batch feeding pulverized coal to an oven that is sealed and heated to very high temperatures for approximately forty-eight hours under closely-controlled atmospheric conditions. Coking ovens have been used for many years to convert coal into metallurgical coke. During the coking process, finely crushed coal is heated under controlled temperature conditions to devolatilize the coal and form a fused mass of coke having a predetermined porosity and strength. Because the production of coke is a batch process, multiple coke ovens are operated simultaneously.
Much of the coke manufacturing process is automated due to the extreme temperatures involved, and a pusher charger machine (PCM) is typically used on the coal side of the oven for a number of different operations.
The present technology relates to a particulate detection system for determining if and when potentially undesirable particulate is present in a given area or region. In some embodiments, the particulate detection system described herein can be used as a leak detection system. For example, when used proximate a separation or collection device, such as a dust collector, the particulate detection system can detect when a leak has occurred. The particulate detection system can provide an indication to plant personnel to remedy an identified issue, such as a leak in a separation or collection device. As explained in more detail below, some embodiments of the present technology include a separation or collection device (e.g., a filter), and a detection device downstream of the separation or collection device and configured to detect particulate released from the separation or collection device (such as via a leak). In some embodiments, the particulate detection system is configured such that released particulate can cause a change in current associated with the detection device, thereby causing the detection device to generate an action, such as the indication to plant personnel.
Specific details of several embodiments of the technology are described below with reference to the Figures. Other details describing well-known structures and systems with which the particulate detection system can be used (e.g., pusher systems, charging systems, and coke ovens) have not been set forth in the following disclosure to avoid unnecessarily obscuring the description of the various embodiments of the technology. Many of the details, dimensions, angles, spatial orientation and other features shown in the Figures are merely illustrative of particular embodiments of the technology. Accordingly, other embodiments can have other details, dimensions, angles, spatial orientation and features without departing from the spirit or scope of the present technology. A person of ordinary skill in the art, therefore, will accordingly understand that the technology may have other embodiments with additional elements, or the technology may have other embodiments without several of the features shown and described below with reference to the Figures.
As noted above, the particulate detection system described herein can be used in conjunction with separation or collection devices to aid in, for example, leak detection in such devices. The particulate detection system described herein can be used with any type of separation or collection device. However, for sake of simplicity, this Detailed Description will describe the disclosed technology as used with a filter and filter system for the purpose of detecting leaks. However, this should not be interpreted as limiting the use of the particulate detection system to filters and for the purpose of detecting leaks. Those of ordinary skill in the art will appreciate that any discussion of a filter or filter described herein can also apply to other separation and collection devices. Similarly, the particulate detection device described herein can be used for a variety of purposes, including leak detection, but also for general particulate detection not specifically linked to a leak.
The technology described herein is applicable to any industry in which leak detection is desired. In some embodiments, the technology described herein is employed in conventional byproduct coke oven batteries for charging, pushing and transporting coke. The technology described herein can be used in, for example, both heat recovery and non-recovery coke oven systems. However, the technology described herein should not interpreted as being limited to these systems.
Referring back to
Many embodiments of the operating system 230 may take the form of computer-executable instructions, including routines executed by a programmable computer. The operating system 230 may, for example, also include a combination of supervisory control and data acquisition (SCADA) systems, distributed control systems (DCS), programmable logic controllers (PLC), control devices, and processors configured to process computer-executable instructions. Those skilled in the relevant art will appreciate that the technology can be practiced on computer systems other than those described herein. The technology can be embodied in a special-purpose computer or data processor that is specifically programmed, configured or constructed to perform one or more of the computer-executable instructions described below. Accordingly, the terms “operating system” and “computer” as generally used herein refer to any data processor. Information handled by these computers can be presented at any suitable display medium, including a CRT display or LCD. The technology can also be practiced in distributed environments, where tasks or modules are performed by remote processing devices that are linked through a communications network. In a distributed computing environment, program modules or subroutines may be located in local and remote memory storage devices. Aspects of the technology described below may be stored or distributed on computer-readable media, including magnetic or optically readable or removable computer disks, as well as distributed electronically over networks. Data structures and transmissions of data particular to aspects of the technology are also encompassed within the scope of particular embodiments of the disclosed technology.
Referring again to
In operation, detected particulates by the detection device indicates a leak in one or more of the filters. The leak may be caused by a hole or opening in one of the filters, but can also be caused by other factors, such as an incorrect installation of the one of more filters. If the detection device detects particulate immediately after one or more of the filters is put online, the leak may be an indication to the plant personnel that the one or more filters was not installed correctly. In such case, plant personnel may inject colored dust particles toward the one or more filters to determine whether the filters have an opening or are installed incorrectly.
While the particulate detection device has been described herein with respect to positioning the particulate detection device within existing equipment, such as within a filter system, the particulate detection device can also be used in other environments. For example, the particulate detection device described herein can be used in an outside environment, such as proximate but outside of equipment requiring monitoring. Such a configuration allows the detection device to, for example, detect particulate that has escaped from nearby equipment into an outside environment.
The particulate detection device described herein can also be used in a stationary environment (i.e., where the particulate detection device is stationed in a single location and does not move), or in a moving environment, such as on top of moving equipment, machinery, or on vehicles. In examples specific to the coke manufacturing facility, the particulate detection device can be mounted on moving equipment such as a door machine, a quench car, a PCM (pusher charge machine), FPHC (flat push hot car), or it can be mounted on any type of machine, vehicle or truck that navigates around a facility.
The method 400 further comprises generating an action based on a current associated with the detected particulate being above a predetermined threshold (process portion 406). The generated action can comprise activating an indication, such as an audible alarm or illuminated display. The alarm or display can indicate to plant personnel that a potential leak exists and further investigation is needed. In some embodiments, the indication may be, e.g., in an operator's cab of the PCM. In some embodiments, generating the action can be caused by de-energizing or energizing an output relay of the detection device. Other actions that can be generated upon detection of particulate can include an automated maintenance system that automatically engages to correct an identified issue when particulate is identified. Rather than being automatically engaged, detection of particulate can result in a message being sent to an operator requesting that a maintenance system be engaged so that there is human verification and/or authorization prior to initiation.
One advantage of embodiments of the present technology is the ability to detect the presence or flow of particulate on a moveable machine/system. In conventional technologies, detection devices could not be mounted to a moveable machine because the detection devices were sensitive to even minor vibrations, and thus any movement of the detection system or structure to which the detection system was mounted, would result in inaccurate measurements or faulty signals. Accordingly, unlike the present technology, conventional detection devices could not be mounted to moving or moving machines. The present technology overcomes this deficiency of conventional technologies in part because the detection device includes a probe for sensing and does not include wires.
Another advantage of embodiments of the present technology is the ability to provide relatively instantaneous feedback to plant personnel in the event of a leak. Unlike conventional technologies, which required manually checking the filters as a preventive maintenance step, embodiments of the present technology can automatically detect a leak and potentially provide an opportunity to remedy a leak or take appropriate action(s) before a regulatory permit limit is exceeded.
The functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. Other examples and implementations are within the scope of the disclosure and appended claims. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
As used herein, including in the claims, “or” as used in a list of items (for example, a list of items prefaced by a phrase such as “at least one of” or “one or more of”) indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C). Also, as used herein, the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an exemplary step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure. In other words, as used herein, the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.”
As used herein, the terms “vertical,” “horizontal,” “lateral,” “upper,” “lower,” “above,” and “below” can refer to relative directions or positions of features in the semiconductor devices in view of the orientation shown in the Figures. For example, “upper” or “uppermost” can refer to a feature positioned closer to the top of a page than another feature. These terms, however, should be construed broadly to include semiconductor devices having other orientations, such as inverted or inclined orientations where top/bottom, over/under, above/below, up/down, and left/right can be interchanged depending on the orientation.
From the foregoing, it will be appreciated that specific embodiments of the invention have been described herein for purposes of illustration, but that various modifications may be made without deviating from the scope of the invention. For example, Rather, in the foregoing description, numerous specific details are discussed to provide a thorough and enabling description for embodiments of the present technology. One skilled in the relevant art, however, will recognize that the disclosure can be practiced without one or more of the specific details. In other instances, well-known structures or operations often associated with memory systems and devices are not shown, or are not described in detail, to avoid obscuring other aspects of the technology. In general, it should be understood that various other devices, systems, and methods in addition to those specific embodiments disclosed herein may be within the scope of the present technology.
This non-provisional patent application claims the benefit of priority to U.S. Provisional Patent Application No. 62/786,284, titled “FILTER LEAK DETECTION FOR INDUSTRIAL FACILITIES. AND ASSOCIATED SYSTEMS AND METHODS” and filed Dec. 28, 2018, which is incorporated by reference herein in its entirety by reference thereto
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