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 are arranged in the dust removal chamber; and a plurality of SCR reactors are arranged in the gas purification chamber.

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 are arranged in the dust removal chamber; a plurality of SCR reactors are arranged in the clean air chamber.

[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] An inspection walkway is arranged outside the equipment casing, and an inspection door is arranged at a position of the equipment casing at the same installation height as the dust removal element and the SCR reactor.

[0012] The top-in and bottom-out integrated dust and saltpeter processing equipment also includes a blowing device arranged in the dust removal chamber, and the blowing device is located above the dust removal element.

[0013] The top-inlet and bottom-outlet integrated dust and saltpeter treatment equipment also includes a grid plate arranged in the clean air chamber and located above the SCR reactor.

[0014] After adopting the above technical solution, the utility model has the following technical effects:

[0015] The utility model can realize integrated dust and saltpeter treatment by integrating the dust removal element and the SCR reactor in the same equipment shell, and at the same time, the overall structure can be arranged on the top of the original process system by installing the bracket, 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 SCR reactor is arranged in the clean gas chamber with sufficient height space, and a straight pipe section can be reserved at the upper and lower parts of the SCR reactor to meet the uniform distribution requirement of the flue gas flow field. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the external structure of a specific embodiment of the utility model;

[0017] Figure 2 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);

[0018] Figure 3 A schematic diagram of an air guide plate according to a specific embodiment of the utility model;

[0019] Description of Figure Numbers:

[0020] 1-mounting bracket; 2-equipment housing; 21-smoke partition; 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; 20-maintenance door; 3-dust removal element; 4-SCR reactor; 5-maintenance plank road; 6-blowing device; 7-grid plate. DETAILED DESCRIPTION

[0021] In order to further explain the technical solution of the present invention, the present invention is described in detail below through specific embodiments.

[0022] refer to Figures 1 to 3As 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;

[0023] 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);

[0024] 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;

[0025] A plurality of dust removal elements 3 are arranged in the dust removal chamber 23;

[0026] A plurality of SCR reactors 4 (ie, catalysts) are disposed in the clean gas chamber 22 .

[0027] Through the above scheme, the utility model can realize the integrated treatment of dust and saltpeter by integrating the dust removal element 3 and the SCR reactor 4 in the same equipment housing 2. 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 function of dust and saltpeter treatment, and reduce the occupied area; the SCR reactor 4 is arranged in the clean gas chamber 22 with sufficient height space, and a straight pipe section can be reserved at the upper and lower parts of the SCR reactor 4 to meet the requirements of uniform distribution of the flue gas flow field.

[0028] Specific embodiments of the present utility model are shown below.

[0029] 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.

[0030] 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.

[0031] 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.

[0032] 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.

[0033] 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.

[0034] The outside of the equipment housing 2 is provided with an inspection walkway 5, and the equipment housing 2 is provided with an inspection door 20 at the same position as the installation height of the dust removal element 3 and the SCR reactor 4. The staff can walk to the inspection door 20 through the inspection walkway 5, open the inspection door 20 to inspect and replace the dust removal element 3 or the SCR reactor 4, and the inspection door 20 is normally closed to ensure the sealing of the equipment housing 2.

[0035] The utility model further comprises a blowing device 6 disposed in the dust removal chamber 23, and the blowing device 6 is located above the dust removal element 3. 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 6 can be automatically started by program control to spray and clean the dust, ensuring that the overall equipment runs with low resistance.

[0036] The utility model further comprises a grid plate 7 arranged in the clean air chamber 22 and located above the SCR reactor 4. The grid plate 7 has a plurality of grids, which can play the role of rectifying and guiding the airflow so that the airflow contacts each SCR reactor 4 more evenly.

[0037] The SCR reactor 4 is provided with at least two layers in the clean gas chamber 22 in an up-and-down stacking manner, so as to achieve a better clean gas effect.

[0038] In this embodiment, the clean air chamber 22 is located at the center line of the equipment housing 2, and dust removal chambers 23 are arranged on both sides thereof, so that the two dust removal chambers 23 are arranged side by side on both sides of the clean air chamber 22, and the structural design is more compact and reasonable.

[0039] 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 are arranged in the dust removal chamber; A plurality of SCR reactors are arranged in the clean gas chamber.

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: An inspection walkway is arranged outside the equipment casing, and an inspection door is arranged at a position of the equipment casing at the same installation height as the dust removal element and the SCR reactor.

8. 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 arranged in the dust removal chamber, and the blowing device is located above the dust removal element.

9. The integrated dust and saltpeter treatment equipment with upper inlet and lower outlet according to claim 1 is characterized in that: The invention also includes a grid plate disposed in the clean gas chamber and located above the SCR reactor.

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