KR20230163165A - Dust and gas hybrid collecting system of structure - Google Patents

Abstract

The present invention relates to a device that simultaneously reduces dust and waste gas discharged into the atmosphere in each industrial process. More specifically, it relates to a device that supports a selective catalyst in a ceramic filter or selects a catalyst that reacts with waste gas to provide a filling space in one device. It is about the structure of the simultaneous reduction device system.
In order to effectively remove air pollutants from each industrial process, the need to treat dust and waste gas contained in high-temperature exhaust gas is increasing in many air pollutant emission facilities today. A high-temperature dust collector using a ceramic filter that can be used at high temperatures has superior heat resistance and a fast filtration speed compared to existing filter dust collectors. It simultaneously reduces dust and dust through the reaction of catalyst and waste gas at high temperatures, eliminating the need for separate cooling facilities. It has the advantage of relatively low manufacturing, installation, and maintenance costs, and also has the advantage of being able to use high-temperature clean gas for drying and warming processes, so development is being accelerated around the world.
A pulse jet is provided to maintain the differential pressure of the filter to enable continuous operation by repeatedly dedusting the dust collected on the surface of the filter using the pressure of compressed air for the ceramic filter or ceramic catalyst filter applied to the simultaneous reduction device, The waste gas that has passed through the filter is reduced through reaction with the catalyst carried on the filter or reduced in a separate catalyst space, and relates to a simultaneous dust and waste gas reduction device system in a high temperature process.

Description

Structure of simultaneous dust and gas reduction device { DUST AND GAS HYBRID COLLECTING SYSTEM OF STRUCTURE }

The present invention relates to a device that simultaneously reduces dust and waste gas discharged into the atmosphere in each industrial process. More specifically, it relates to a device that supports a selective catalyst in a ceramic filter or selects a catalyst that reacts with waste gas to provide a filling space in one device. It is about the structure of the simultaneous reduction device system.

In order to effectively remove air pollutants from each industrial process, the need to treat dust and waste gas contained in high-temperature exhaust gas is increasing in many air pollutant emission facilities today. A high-temperature dust collector using a ceramic filter that can be used at high temperatures has superior heat resistance and a fast filtration speed compared to existing filter dust collectors. It simultaneously reduces dust and dust through the reaction of catalyst and waste gas at high temperatures, eliminating the need for separate cooling facilities. It has the advantage of relatively low manufacturing, installation, and maintenance costs, and also has the advantage of being able to use high-temperature clean gas for drying and warming processes, so development is accelerating around the world.

A pulse jet is provided to maintain the differential pressure of the filter to enable continuous operation by repeatedly dedusting the dust collected on the surface of the filter using the pressure of compressed air for the ceramic filter or ceramic catalyst filter applied to the simultaneous reduction device, The waste gas that has passed through the filter is reduced through reaction with the catalyst carried on the filter or reduced in a separate catalyst space, and relates to a simultaneous dust and waste gas reduction device system in a high temperature process.

In reducing dust and waste gas, the exhaust gas treatment device of air pollution prevention facilities for each industrial process according to the prior art had a dust collection device for catching dust and a separate device for catching waste gas.

The dust collector according to the prior art aims to collect or reduce dust, has a low operating temperature by using a fiber filter, and waste gases such as NOx and VOCs in the exhaust gas are reduced by using a separate reaction device.

In the case of ceramic filters used for dust collection at high temperatures according to the prior art, most of them have a circular shape and are used for dust collection in high-temperature dust collection devices. However, when carrying a catalyst, they are expensive and have a small filtration area, making it difficult to apply them to each industrial process. In the present invention, the modular ceramic filters are primarily stacked to secure an appropriate filtration area, and a separate space for the catalyst is secured to create a device that reduces dust and waste gas at the same time, thereby reducing production costs and operation. It has the advantage of expected savings in costs, maintenance costs, etc. and the ability to install in limited spaces.

In order to effectively remove air pollutants from each industrial process, the need for simultaneous reduction is increasing in many air pollutant emission prevention facilities today, and simultaneous reduction devices using ceramic filters or ceramic catalyst filters that can be used at high temperatures are being used at high temperatures. By simultaneously reducing dust and waste gas, the process can be shortened by eliminating the need for separate cooling facilities. It also has the advantage of being able to use high-temperature clean gas for drying and warming processes, spurring development around the world.

In addition, much development is being carried out in processes such as integrated gasification combined cycle (IGCC), pressurized fluidized bed combustion (PFBC), and industrial boilers, which are combined cycle power plants that apply this. .

In order to solve the problems of the prior art as described above, the present invention stacks and installs ceramic filters or ceramic catalyst filters, creates a space with a separate catalyst layer as one device, and removes dust and waste gas by sequentially using the ceramic catalyst filter and the catalyst layer. The purpose is to provide a simplified simultaneous reduction device for removing or reducing exhaust gas that has passed through.

In addition, the present invention aims to provide a simultaneous reduction device that can be installed in a limited space by shortening the process and can minimize maintenance costs through relatively low manufacturing costs and easy maintenance through a simple simultaneous reduction device system configuration. do.

In addition, the purpose of the present invention is to provide a simultaneous reduction device that minimizes the cases of damage to ceramic filters or ceramic catalyst filters that are vulnerable to brittleness and deterioration of catalyst function due to lack of simultaneous reduction device system management or regular inspection.

In order to solve the problems of the prior art as described above, the present invention stacks and mounts ceramic filters or ceramic catalyst filters. A gasket is placed between the perforated plate and the filter, fixed with bolts and nuts, and a metal material is placed in the space where the separate catalyst layer is located. By making a box and filling it with a pellet-shaped catalyst that selectively reacts with the type of waste gas, it is made into a single device, and dust and waste gas pass through the ceramic filter and catalyst box layers sequentially, simplifying the removal or reduction of exhaust gases in each business process. The purpose is to provide a reduction device.

In addition, the present invention aims to provide a simultaneous reduction device that can be installed in a limited space by shortening the process and can minimize maintenance costs through relatively low manufacturing costs and easy maintenance through a simple simultaneous reduction device system configuration. do.

In addition, the purpose of the present invention is to provide a simultaneous reduction device that minimizes the cases of damage to highly brittle ceramic filters or ceramic catalyst filters and deterioration of catalyst function due to lack of simultaneous reduction device system management or regular inspection.

In the present invention, ceramic filters or ceramic catalyst filters are stacked and mounted. A gasket is placed between the perforated plate and the filter, fixed with bolts and nuts, and a metal box is made in the space with a separate catalyst layer to create a pallet that selectively reacts with the type of waste gas. By filling it with a catalyst in the form of a single device, dust is collected on the surface of the ceramic filter, and when the waste gas passes through the catalyst box layer, it is converted into clean air through a reaction, simplifying the simultaneous reduction of exhaust gas from each business process. The purpose is to provide a device.

In addition, the present invention aims to provide a simultaneous reduction device that can be installed in a limited space by shortening the process and can minimize maintenance costs through relatively low manufacturing costs and easy maintenance through a simple simultaneous reduction device system configuration. do.

The present invention described above is not limited to the detailed description, operation examples, and drawings, and may be modified in various ways by those skilled in the art without departing from the spirit and scope of the present invention as set forth in the claims below. And changes thereof are also included within the scope of the present invention.

1 is a schematic diagram of the front structure of the system for an embodiment of the simultaneous reduction device of the present invention.
Figure 2 is a schematic diagram of the system side structure of an embodiment of the simultaneous reduction device of the present invention.
Figure 3 is a schematic diagram of the top structure of the system for an embodiment of the simultaneous reduction device of the present invention.
Figure 4 is a perspective view showing the catalyst box support frame and catalyst box located on the upper part of the simultaneous reduction device of the present invention as an example.
Figure 5 is a perspective view showing an example of a catalyst box used in the simultaneous reduction device of the present invention.
Figure 6 is a perspective view showing an example of a ceramic filter and a ceramic catalyst filter applied to the simultaneous reduction device of the present invention.
Figure 7 is a photograph showing an example of a nitrogen oxide reduction catalyst in the form of a pellet filled in a catalyst box used in the simultaneous reduction device of the present invention.

Below, with reference to the attached drawings, embodiments of the present invention will be described in detail so that those skilled in the art can easily implement the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein.

In order to clearly explain the present invention in the drawings, parts that are not related to the description are omitted, and similar parts are given similar reference numerals throughout the specification.

Throughout the specification, when a part is said to “include” a certain element, this means that it may further include other elements rather than excluding other elements, unless specifically stated to the contrary.

In order to achieve the above object, the present invention is a simultaneous reduction device main body, and a structure in which a plurality of modular ceramic filters or ceramic catalyst filters are stacked or arranged and a catalyst box is filled with catalysts of various shapes can be manufactured as a single device. .

The modular ceramic filter 400 or ceramic catalyst filter 400 is manufactured in a structure that can be used as shown in the drawing in FIG. 6 without any problems up to a high temperature of about 500°C, and can be adjusted to suit the dust characteristics by adjusting the pores of the filter and coating the surface. Efficiency can be increased by manufacturing, and in the case of a ceramic catalyst filter, it provides the function of a simultaneous reduction device (100) to simultaneously reduce dust and waste gas generated during the process by selecting and supporting a catalyst according to the waste gas generated.

The catalyst box 330 and the catalyst 300 are made of a metal box in a space with a separate catalyst layer, placed in the catalyst box support frame 310, and selectively reacted with the type of waste gas. The catalyst is in the form of a pellet in the photo of FIG. 7. When exhaust gas fills (300) and passes through the catalyst layer contained in the catalyst box between 250 and 350°C, it reacts with the catalyst and changes into clean air (530), satisfying environmental standards and eliminating or reducing exhaust gas from each industrial process. Provides a simultaneous reduction device (100) that increases optimal efficiency and simplifies the process.

Figure 1 is the front structure of the simultaneous reduction device 100 as an embodiment of the present invention, Figure 2 is the side structure, and Figure 3 explains the components of the structure as seen from above.

In the simultaneous reduction device 100 according to an embodiment of the present invention, when dust and waste gas contained in exhaust gas generated from each industrial combustion process enters the inlet 510, it passes through the inlet hopper 200 and is filtered through the ceramic filter 400. The exhaust gas 520 is spread in a certain distribution by the guide van 115 in the space where the exhaust gas 520 is stacked, and as it passes through the ceramic filter 400, the dust is collected on the filter surface, and the pressure loss increases due to the dust collection of the filter. When the solenoid valve 150 is operated on the control panel 210, the air extruded from the air tank 140 is backwashed into the ceramic filter through the pulse tube 130 by using a jet pulse of compressed air from the solenoid valve 150. By spraying and shaking off the dust attached to the filter surface, a constant differential pressure is maintained to enable continuous use. When the ceramic catalytic filter (400) is installed in the same location, the waste gas reacts with the selected catalyst to produce exhaust gas (525). ), and when higher waste gas reduction efficiency is required, when it passes through the catalyst box (330), the purified exhaust gas (530) goes out to the outlet (540) to maintain a clean atmospheric environment by continuously reducing dust and waste gas simultaneously. Provides technology.

Figure 4 shows an embodiment of the present invention in which the exhaust gas that is primarily purified while passing through the ceramic filter 400 in a structural component of the simultaneous reduction device 100 passes through the catalyst box 330 to obtain higher efficiency. In this way, the waste gas reduction efficiency can be increased by filling the catalyst box 330 with the selected catalyst 300 and fixing it at regular intervals on the frame 310 supporting the catalyst box.

Figure 5 is an embodiment of the present invention in which the catalyst box 330 is filled with the selective catalyst 300 at regular intervals in the frame 310 supporting the catalyst box of the simultaneous reduction device 100. ) is a catalyst box frame (340) formed by assembling and forming a metal plate bent into a U-shape, and attaching a mesh net (350) to both sides and welding it, so there is air flow, but it is smaller than the size of the catalyst, so it cannot pass through. We provide a catalyst box that minimizes pressure loss and maintains catalyst without loss by selecting a mesh size.

In the catalyst box support frame 310, the catalyst boxes 330 can be arranged at regular intervals not only in the vertical structure of the simultaneous reduction device 100 but also in the horizontal structure, and the position and shape can also be changed according to process conditions. To achieve optimal efficiency.

Figure 6 shows the structure and components of a ceramic filter or a ceramic catalyst filter used in the structure of the simultaneous reduction device 100 as an embodiment of the present invention. A ceramic filter or a ceramic catalyst filter is placed between the upper cap and the lower cap using a connector. When assembling, springs are provided to maintain the assembled structure to prevent changes due to thermal expansion and contraction during use.

Figure 7 shows an embodiment of the present invention, in which the catalyst box 330 of the simultaneous reduction device 100 is filled with catalyst 300, the shape of the catalyst 300 is sphere, hemisphere, tube, rod and irregular shape, It includes polygons, etc., and the material of the catalyst 100 reduces nitrogen oxides (NOx), volatile organic compounds (VOCs), sulfur oxides (SOx), and other exhaust gases from exhaust gases generated in each industrial process. It includes commercial catalyst materials used for this purpose, especially titanium dioxide, vanadium pentoxide, alumina, slaked lime, zeolite, diatomaceous earth, and other inorganic materials with catalytic functions, as well as tungsten, copper, manganese, and other precious metal materials with catalytic functions. do.

In another embodiment of the simultaneous reduction device 100 of the present invention, the number of ceramic filters and ceramic catalytic filters 400 applied varies depending on the applied capacity and conditions of each business process in the structural components, and the installation structure In addition to being mounted in a horizontal structure, it can be mounted in a vertical structure. When mounted vertically, the door 160, air tank 140, solenoid valve 150, pulse tube 130, perforated plate 110, Each structure and configuration includes the catalyst box support frame 310, catalyst box 310, control panel 210, dust hopper 220, dust box 240, inlet 510, outlet 540, etc. This includes preventing condensation by changing the design and manufacturing to an appropriate location according to the field conditions of the industrial process and keeping the manufactured simultaneous reduction device (100) warm (155).

The present invention described above is not limited to the above-described embodiments and the accompanying drawings, and may be modified and modified in various ways by those skilled in the art without departing from the spirit and scope of the present invention as set forth in the claims below. Of course, changes are also included within the scope of the present invention.

100: Simultaneous reduction device main body 110: Perforated plate
115: Guide van 120: Filter fixing bolt_nut
130: pulse tube 140: air tank
145: Air tank fixture 150: Solenoid valve
155: Insulation 160: Door
165: upper door lock ring 170: door lock bar
175: Lower door lock ring 180: Lockless handle
185: hinge
200: Entrance hopper 210: Control panel
220: dust hopper 230: valve
240: Dust box 250: Body support
300: Catalyst 310: Catalyst box support frame
330: Catalyst box 340: Catalyst box frame
350: Matching net 355: Top opening
360: side blocking
400: Ceramic filter or ceramic catalyst filter
410: Filter support
510: High temperature exhaust gas inlet 520: Exhaust gas flow 1
525: exhaust gas flow 2 530: exhaust gas flow 3
540: High temperature exhaust gas outlet

Claims (7)

In treating dust and waste gases (NOx, VOCs, HCl, SOx, etc.) contained in exhaust gas generated from each industrial combustion process with the simultaneous reduction device 100; When entering the inlet 510, the exhaust gas 520 is spread in a uniform distribution by the guide van 115 through the inlet hopper 200 and into the space where the ceramic filter 400 is stacked, and the ceramic filter 400 is As it passes, the dust is collected on the surface of the filter, and when the pressure loss increases due to the dust collection of the filter, the solenoid valve 150 is operated on the control panel 210, and the air extruded into the air tank 140 is released into the solenoid valve 150. By backwashing and spraying compressed air with a jet pulse onto the ceramic filter through the pulse tube (130) to shake off dust attached to the filter surface, a constant differential pressure is maintained to enable continuous use. A ceramic catalyst filter (400) is installed at the same location. ) is installed, the waste gas reacts with the selectively supported catalyst and is purified into exhaust gas 525, and when a higher waste gas reduction efficiency is required, when it passes through the catalyst box 330, the purified exhaust gas 530 It provides technology to maintain a clean air environment by continuously reducing dust and waste gases through exit 540.
In another embodiment, in the structural components of the simultaneous reduction device 100, the number of ceramic filters and ceramic catalyst filters 400 to be applied varies depending on the applied capacity and conditions of each industrial process, and the horizontal structure in the mounting structure It can be installed not only vertically, but also vertically. When mounted vertically, it supports the door 160, air tank 140, solenoid valve 150, pulse tube 130, perforated plate 110, and catalyst box. The structure and composition including the frame 310, catalyst box 310, control panel 210, dust hopper 220, dust box 240, inlet 510, outlet 540, etc. are determined according to site conditions. A simultaneous reduction device that is designed and manufactured by changing to an appropriate position and that prevents condensation by keeping the manufactured simultaneous reduction device (100) warm (155).
According to paragraph 1,
The simultaneous reduction device is characterized in that it removes primary dust from the filter surface with a ceramic filter (400), selects a catalyst that reacts with the secondary gas generated in the catalyst box, and purifies it by making it in various shapes and sizes. Device.
According to paragraph 1,
The simultaneous reduction device removes primary dust from the filter surface with a ceramic catalytic filter (400), selects a catalyst that reacts with gas, and supports it on the ceramic filter. As the exhaust gas passes through the installed ceramic catalytic filter (400), 2 A simultaneous reduction device that performs primary purification and increases efficiency through tertiary purification by selecting a catalyst (300) that reacts with the generated gas and putting it in various shapes and sizes in the catalyst box (330).
According to paragraph 1,
In the structural components of the simultaneous reduction device 100, the number of ceramic filters and ceramic catalyst filters 400 to be applied varies depending on the applied capacity and conditions of each industrial process, and may be mounted horizontally in the mounting structure. In addition, it can be installed in a vertical structure, and when mounted in a vertical structure, the door (160), air tank (140), solenoid valve (150), pulse tube (130), perforated plate (110), catalyst box support frame (310) ), catalyst box (310), control panel (210), dust hopper (220), dust box (240), inlet (510), outlet (540), etc. are located at an appropriate location according to field conditions. A simultaneous reduction device that is designed and manufactured in a modified manner and is characterized in that it prevents condensation by keeping the manufactured simultaneous reduction device (100) warm (155).
According to paragraph 1,
In the simultaneous reduction device 100, the compressed gas that is compressed and stored in the air tank 140 and backwashed in the ceramic filter through the solenoid valve 15 and pulse tube 130 is air, nitrogen, or an inert gas. Reduction device.
According to paragraph 1,
In the simultaneous reduction device 100, one or more ceramic filters or ceramic catalyst filters 400 at the rear of the perforated plate 110 on which the ceramic filters or ceramic catalyst filters 400 are mounted are blocked with a partition to isolate each. A simultaneous reduction device characterized by:
A simultaneous reduction device comprising the simultaneous reduction device according to any one of claims 1 to 6 and structural details for carrying out the invention, and each embodiment being designed and manufactured to suit field conditions.