Upper-inlet lower-outlet dust and nitrate integrated treatment equipment

Abstract

The utility model discloses upper-inlet and lower-outlet dust and nitrate integrated treatment equipment which can be suitable for upgrading and reconstruction of an original process and meets the design requirements of small occupied area and the like. The upper-inlet and lower-outlet dust and nitrate integrated treatment equipment comprises a mounting bracket, an equipment shell, a dust removal element and an SCR (Selective Catalytic Reduction) reactor, the mounting bracket is used for realizing connection between the equipment shell and the original process; a gas purification chamber and a dust removal chamber which are separated by a flue gas partition plate are arranged in the equipment shell, a flue gas inlet is formed in the top of the equipment shell, and a purified gas outlet is formed in the bottom of the equipment shell; an air guide plate is arranged in the dust removal chamber, a flue gas channel is defined between the air guide plate and the flue gas partition plate, the upper end of the flue gas channel is communicated to the flue gas inlet, the lower end of the flue gas channel is communicated to the bottom of the dust removal chamber, the top of the dust removal chamber is communicated to the top of the gas purification chamber through a branch pipe channel, and the bottom of the gas purification chamber is communicated to the gas purification outlet; a plurality of dust removal elements and an SCR reactor are arranged in the dust removal cavity, and the SCR reactor is located above the dust removal elements.

Description

Technical Field

[0001] The utility model relates to the technical field of flue gas treatment, in particular to an integrated dust and saltpeter treatment device with upper inlet and lower outlet. Background Art

[0002] As environmental protection indicators become more and more stringent, environmental protection requirements for flue gas ultra-low emissions are being implemented in various regions and industries. Traditional flue gas treatment processes can no longer meet environmental protection requirements, so the research direction of flue gas treatment is moving towards high-temperature and low-dust processes. However, due to the high temperature and low-dust process, the flue gas temperature is high and the amount of flue gas is large, resulting in large volumes of environmental protection equipment. In addition, the on-site space of most projects is limited, and ultimately ultra-low emission transformation cannot be achieved due to site issues. Utility Model Content

[0003] The purpose of the utility model is to provide an integrated dust and saltpeter treatment device with upper inlet and lower outlet, so as to solve the problems existing in the prior art, be applicable to the upgrading and transformation of the original process, and meet the design requirements such as small footprint.

[0004] In order to achieve the above purpose, the solution of the utility model is:

[0005] An integrated dust and saltpeter treatment device with top inlet and bottom outlet comprises a mounting bracket, a device housing, a dust removal element and an SCR reactor; the mounting bracket is used to realize the connection between the device housing and the original process; a clean air chamber and a dust removal chamber separated by a flue gas partition are arranged in the device housing, and a flue gas inlet is arranged at the top of the device housing, and a clean air outlet is arranged at the bottom; an air guide plate is arranged in the dust removal chamber, and a flue gas channel is formed between the air guide plate and the flue gas partition, the upper end of the flue gas channel is connected to the flue gas inlet, the lower end of the flue gas channel is connected to the bottom of the dust removal chamber, the top of the dust removal chamber is connected to the top of the clean air chamber through a branch pipe channel, and the bottom of the clean air chamber is connected to the clean air outlet; a plurality of dust removal elements and an SCR reactor are arranged in the dust removal chamber, and the SCR reactor is located above the dust removal element.

[0006] The smoke baffle is a steel plate.

[0007] The air guide plate is provided with a plurality of evenly arranged through holes.

[0008] An ash hopper is arranged below the dust removal chamber.

[0009] Preferably, a plurality of guide plates arranged at intervals are provided in the ash hopper; the upper ends of the guide plates are inclined toward the direction of the smoke channel, and the side surfaces of the guide plates face the dust removal chamber.

[0010] The dust removal element adopts a high temperature resistant metal filter bag.

[0011] The top-in and bottom-out integrated dust and saltpeter treatment equipment also includes a blowing device arranged in the dust removal chamber, and the blowing device is located between the top of the dust removal element and the bottom of the SCR reactor.

[0012] The clean air chamber is located at the center line of the device housing, and a plurality of dust removal chambers are arranged around the clean air chamber in a circumferential direction.

[0013] After adopting the above technical solution, the utility model has the following technical effects:

[0014] The utility model can realize integrated dust and saltpeter treatment by integrating the dust removal element and the SCR reactor in the same equipment casing and locating both of them in the dust removal chamber for centralized installation. Meanwhile, the overall structure can be arranged on the top of the original process system through the installation bracket, so as to realize the transformation and upgrading of the original process, give it the dust and saltpeter treatment function, and realize the reduction of the occupied area. The dust removal element and the SCR reactor are both arranged in the dust removal chamber, and centralized maintenance and replacement can be realized by only arranging an inspection port on the equipment casing, which is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The internal structure and smoke flow direction diagram of a specific embodiment of the utility model (solid arrows represent smoke, and dotted arrows represent clean air);

[0016] Figure 2 A schematic diagram of an air guide plate according to a specific embodiment of the utility model;

[0017] Description of Figure Numbers:

[0018] 1-mounting bracket; 2-equipment housing; 21-smoke baffle; 22-clean air chamber; 23-dust removal chamber; 24-smoke inlet; 25-clean air outlet; 26-air guide plate; 261-through hole; 27-smoke channel; 28-branch channel; 29-ash hopper; 291-guide plate; 3-dust removal element; 4-SCR reactor; 5-injection device; DETAILED DESCRIPTION

[0019] In order to further explain the technical solution of the present utility model, the present utility model is described in detail below through specific embodiments.

[0020] refer to Figure 1 and Figure 2 As shown, the utility model discloses an integrated dust and saltpeter treatment device with upper inlet and lower outlet, comprising a mounting bracket 1, a device housing 2, a dust removal element 3 and an SCR reactor 4;

[0021] The mounting bracket 1 is used to realize the connection between the equipment housing 2 and the original process (such as the top of the waste heat boiler at the end of the cement kiln);

[0022] A clean air chamber 22 and a dust removal chamber 23 separated by a smoke partition 21 are arranged in the equipment housing 2, and a smoke inlet 24 is arranged at the top of the equipment housing 2, and a clean air outlet 25 is arranged at the bottom; an air guide plate 26 is arranged in the dust removal chamber 23, and a smoke channel 27 is formed between the air guide plate 26 and the smoke partition 21, the upper end of the smoke channel 27 is connected to the smoke inlet 24, the lower end of the smoke channel 27 is connected to the bottom of the dust removal chamber 23, the top of the dust removal chamber 23 is connected to the top of the clean air chamber 22 through a branch pipe channel 28, and the bottom of the clean air chamber 22 is connected to the clean air outlet 25;

[0023] A plurality of dust removal elements 3 and an SCR reactor 4 (ie, a catalyst) are disposed in the dust removal chamber 23 , and the SCR reactor 4 is located above the dust removal elements 3 .

[0024] Through the above scheme, the utility model can realize integrated dust and saltpeter treatment by integrating the dust removal element 3 and the SCR reactor 4 in the same equipment housing 2 and locating them in the dust removal chamber 23 for centralized installation. At the same time, the overall structure can be arranged on the top of the original process system through the installation bracket 1, so as to realize the transformation and upgrading of the original process, give it the dust and saltpeter treatment function, and reduce the occupied area; the dust removal element 3 and the SCR reactor 4 are both arranged in the dust removal chamber 23, and centralized maintenance and replacement can be realized by only arranging an inspection port in the equipment housing 2, which is more convenient.

[0025] Specific embodiments of the present utility model are shown below.

[0026] The above-mentioned flue gas baffle 21 is a steel plate, which can withstand high temperatures and meet the operating requirements in a high temperature environment.

[0027] The above-mentioned air guide plate 26 is provided with a plurality of evenly arranged through holes 261, so that part of the flue gas can be directly guided to the area of ​​the dust removal element 3 through the through holes 261, thereby playing a diversion role; at the same time, a certain distance is reserved between the air guide plate 26 and the adjacent dust removal element 3 to ensure that the flue gas is further evenly distributed after passing through the through holes 261 and to reduce the windward wind speed of the flue gas to the dust removal element 3 closest to the air guide plate 26, thereby reducing the wear of the dust removal element 3 by the flue gas and dust.

[0028] An ash hopper 29 is provided below the dust removal chamber 23 so that the smoke flows directly to the top of the ash hopper 29 when it flows out from the smoke channel 27, and the heavy dust particles in the smoke will directly fall into the ash hopper 29, which is convenient for centralized cleaning of the smoke.

[0029] Furthermore, a plurality of guide plates 291 are arranged at intervals in the ash hopper 29; the upper end of the guide plate 291 is inclined toward the direction of the smoke passage 27, and the side of the guide plate 291 faces the dust removal chamber 23. The guide plate 291 can guide the flow direction of the smoke and perform a rough dust removal when the smoke passes through.

[0030] The above-mentioned dust removal element 3 adopts a high-temperature resistant metal filter bag, which can be equipped with different materials according to different temperatures (up to 800°C) and different flue gas components to meet the operation conditions of high temperature, high humidity, high dust concentration, and high acid and alkali flue gas.

[0031] The utility model further comprises a blowing device 5 disposed in the dust removal chamber 23, and the blowing device 5 is located between the upper part of the dust removal element 3 and the lower part of the SCR reactor 4. When there is a lot of dust attached to the surface of the dust removal element 3, the resistance of the filter bag will increase. At this time, the blowing device 5 can be automatically started by program control to spray and clean the dust, so as to ensure the low resistance operation of the whole equipment.

[0032] In this embodiment, the clean air chamber 22 is located at the center line of the equipment housing 2, and a plurality of dust removal chambers 23 are arranged around the clean air chamber 22 in the circumferential direction. The structural design is more compact and reasonable, and occupies a small area.

[0033] The above embodiments and drawings do not limit the product form and style of the present utility model. Any appropriate changes or modifications made by ordinary technicians in the relevant technical field should be deemed to be within the patent scope of the present utility model.

Claims

1. An integrated dust and saltpeter treatment device with upper inlet and lower outlet, characterized in that: Includes mounting bracket, equipment housing, dust removal element and SCR reactor; The mounting bracket is used to achieve the connection between the device housing and the original process; The equipment housing is provided with a clean air chamber and a dust removal chamber separated by a smoke partition, and the top of the equipment housing is provided with a smoke inlet and the bottom is provided with a clean air outlet; the dust removal chamber is provided with an air guide plate, and a smoke channel is formed between the air guide plate and the smoke partition, the upper end of the smoke channel is connected to the smoke inlet, the lower end of the smoke channel is connected to the bottom of the dust removal chamber, the top of the dust removal chamber is connected to the top of the clean air chamber through a branch pipe channel, and the bottom of the clean air chamber is connected to the clean air outlet; A plurality of dust removal elements and an SCR reactor are arranged in the dust removal chamber, and the SCR reactor is located above the dust removal element.

2. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to claim 1 is characterized in that: The smoke baffle is a steel plate.

3. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to claim 1 is characterized in that: The air guide plate is provided with a plurality of evenly arranged through holes.

4. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to claim 1 is characterized in that: An ash hopper is arranged below the dust removal chamber.

5. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to claim 4 is characterized in that: A plurality of guide plates arranged at intervals are arranged in the ash hopper; the upper ends of the guide plates are inclined toward the direction of the smoke channel, and the side surfaces of the guide plates face the dust removal chamber.

6. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to claim 1 is characterized in that: The dust removal element adopts a high temperature resistant metal filter bag.

7. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to claim 1 is characterized in that: It also includes a blowing device disposed in the dust removal chamber, wherein the blowing device is located between the upper part of the dust removal element and the lower part of the SCR reactor.

8. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to any one of claims 1 to 7, characterized in that: The clean air chamber is located at the center line of the device housing, and a plurality of dust removal chambers are arranged around the clean air chamber in a circumferential direction.

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