Dust and nitrate integrated treatment equipment

Abstract

The utility model relates to dust and nitrate integrated treatment equipment, which can reduce the occupied area and can be overhauled on line, and comprises an equipment shell, an inlet air valve, an outlet air valve, a dust removal element, a top cover and an SCR (Selective Catalytic Reduction) reactor, an air passing chamber and a dust removal chamber which are separated by a first partition plate are arranged in the equipment shell, the upper and lower ends of the air passing chamber and the dust removal chamber are respectively communicated, a second partition plate is arranged in the air passing chamber to divide the air passing chamber into an upper part and a lower part, and at least one third partition plate is arranged in the dust removal chamber to divide the dust removal chamber into a plurality of independent chambers; a flue gas inlet and a flue gas outlet are respectively formed in two sides of the equipment shell, the flue gas inlet is communicated to the lower part of the gas passing cavity, and the flue gas outlet is communicated to the upper part of the gas passing cavity; an inlet air valve is arranged between each independent cavity of the dust removal cavity and the lower part of the air passing cavity, an outlet air valve is arranged between each independent cavity and the upper part of the air passing cavity, a plurality of dust removal elements are arranged in each independent cavity, and a top cover is movably matched above each independent cavity; and the SCR reactor is arranged in the upper part of the gas passing cavity.

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. Background Art

[0002] As environmental protection indicators become more and more stringent, environmental protection requirements for flue gas ultra-low emissions are imposed 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. For high-temperature and low-dust processes, there are currently various dust removal and denitrification equipment, such as structures in which dust collectors and denitrification SCR reactors are independently arranged, ceramic tube dust and denitrification integrated equipment structures, metal filter bags + SCR dust and denitrification integrated structures (SCR is arranged at the top of the clean air chamber of the metal filter bag dust collector), etc.

[0003] The layout structures of the above-mentioned dust and saltpeter equipment have more or less disadvantages such as large footprint, high system resistance, large equipment steel consumption, large equipment surface area and high heat dissipation, etc., and maintenance ports are opened on the equipment, and the staff conducts maintenance or replacement of dust removal components, which has the disadvantages of inconvenient replacement of dust removal components or catalysts and inability to perform online maintenance. Utility Model Content

[0004] The purpose of the utility model is to provide an integrated dust and saltpeter treatment device to solve the problems existing in the prior art, reduce the footprint of the equipment, and enable online inspection and maintenance for easy convenience.

[0005] In order to achieve the above purpose, the solution of the utility model is:

[0006] A dust and saltpeter integrated treatment device, comprising a device housing, an inlet air valve, an outlet air valve, a dust removal element, a top cover and an SCR reactor; the device housing is provided with a gas chamber and a dust removal chamber separated by a first partition, the gas chamber is connected to the upper and lower ends of the dust removal chamber respectively, and a second partition is provided in the gas chamber to divide the gas chamber into an upper and lower part, and at least one third partition is provided in the dust removal chamber to divide the dust removal chamber into a plurality of independent chambers; a smoke inlet and a smoke outlet are provided on both sides of the device housing, and the smoke inlet is connected to the upper and lower ends of the dust removal chamber respectively. To the lower part of the air passage chamber, the smoke outlet is connected to the upper part of the air passage chamber; an inlet air valve is arranged between each independent chamber of the dust removal chamber and the lower part of the air passage chamber, an outlet air valve is arranged between each independent chamber and the upper part of the air passage chamber, and a plurality of dust removal elements are arranged in each independent chamber, the dust removal elements are pulled and fitted on the top of the equipment casing, and an openable and closable top cover is movably fitted on the top of each independent chamber to cover the top of the dust removal element; the SCR reactor is arranged in the upper part of the air passage chamber.

[0007] The second partition is tilted in the air passage chamber, with a higher end connected to a side of the device housing where the smoke inlet is opened, and a lower end connected to a side of the device housing where the smoke outlet is opened.

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

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

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

[0011] The top of the air passage chamber is provided with a heat-insulating cover which is detachably connected to the device housing.

[0012] Preferably, the SCR reactor is suspended on the upper part of the gas passage chamber.

[0013] The integrated dust and saltpeter treatment equipment also includes a blowing device arranged above the dust removal chamber.

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

[0015] Through the above scheme, the utility model arranges the SCR reactor, the outlet air valve and the inlet air valve in sequence from top to bottom on the same side elevation, thereby reducing the overall footprint of the equipment and the steel consumption of the equipment; each independent chamber of the dust removal chamber is provided with an independent inlet air valve and an outlet air valve, which can operate independently without interfering with each other. The staff can close the inlet air valve and the outlet air valve of the corresponding area according to the maintenance needs, and open the top cover on the top of the equipment casing to carry out maintenance and replace the dust removal components, thereby realizing online maintenance without shutting down the entire equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a front view of a specific embodiment of the utility model;

[0017] Figure 2 It is a side view of a specific embodiment of the utility model;

[0018] Figure 3 A top view of a specific embodiment of the utility model;

[0019] Description of Figure Numbers:

[0020] 1- Equipment housing; 11- First partition; 12- Air passage chamber; 13- Dust removal chamber; 14- Second partition; 15- Third partition; 16- Flue gas inlet; 17- Flue gas outlet; 18- Ash hopper; 19- Wind guide plate; 2- Inlet air valve; 3- Outlet air valve; 4- Dust removal element; 5- Top cover; 6- SCR reactor; 7- Insulation cover; 8- Blowing device. DETAILED DESCRIPTION

[0021] 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.

[0022] refer to Figures 1 to 3 As shown, the utility model discloses an integrated dust and saltpeter treatment device, comprising a device housing 1, an inlet air valve 2, an outlet air valve 3, a dust removal element 4, a top cover 5 and an SCR reactor 6;

[0023] An air passage chamber 12 and a dust removal chamber 13 separated by a first partition 11 are provided in the device housing 1. The air passage chamber 12 is connected to the upper and lower ends of the dust removal chamber 13 respectively. A second partition 14 is provided in the air passage chamber 12 to divide the air passage chamber 12 into an upper and lower part. At least one third partition 15 is provided in the dust removal chamber 13 to divide the dust removal chamber 13 into a plurality of independent chambers. A smoke inlet 16 and a smoke outlet 17 are provided on both sides of the device housing 1 respectively. The smoke inlet 16 is connected to the lower part of the air passage chamber 12, and the smoke outlet 17 is connected to the upper part of the air passage chamber 12.

[0024] An inlet air valve 2 is provided between each independent chamber of the dust removal chamber 13 and the lower part of the air passage chamber 12, an outlet air valve 3 is provided between each independent chamber and the upper part of the air passage chamber 12, and a plurality of dust removal elements 4 are provided in each independent chamber, and the dust removal elements 4 are pulled and fitted on the top of the equipment housing 1, and an openable and closable top cover 5 is movably fitted on the top of each independent chamber to cover the top of the dust removal element 4;

[0025] The SCR reactor 6 is disposed in the upper portion of the gas passage chamber 12 .

[0026] Through the above scheme, the utility model arranges the SCR reactor 6, the outlet air valve 3 and the inlet air valve 2 in sequence from top to bottom on the same side elevation, which can reduce the overall footprint of the equipment and the steel consumption of the equipment; each independent chamber of the dust removal chamber 13 is provided with an independent inlet air valve 2 and outlet air valve 3, which can operate independently without interfering with each other. The staff closes the inlet air valve 2 and outlet air valve 3 of the corresponding area according to the maintenance needs, and opens the top cover 5 on the top of the equipment casing 1 for maintenance and replacement of the dust removal element 4, thereby realizing online maintenance without shutting down the entire equipment.

[0027] Specific embodiments of the present utility model are shown below.

[0028] The above-mentioned second partition 14 is arranged obliquely in the air passage chamber 12, with its higher end connected to the side of the equipment housing 1 where a smoke inlet 16 is opened, and its lower end is connected to the side of the equipment housing 1 where a smoke outlet 17 is opened, so that the second partition 14 has a diversion function, guiding the smoke to enter the equipment housing 1 and flow downward, and then flow to each independent chamber of the dust removal chamber 13 under the action of each inlet air valve 2.

[0029] An ash hopper 18 is disposed below each independent chamber of the dust removal chamber 13 , so that the smoke inlet 16 is directly connected to the top of the ash hopper 18 , and heavy dust particles in the smoke will directly fall into the ash hopper 18 .

[0030] Furthermore, a plurality of air guide plates 19 are arranged at intervals in the ash hopper 18; the upper end of the air guide plate 19 is inclined toward the direction of the air passage chamber 12, and the side of the air guide plate 19 faces the dust removal chamber 13. The air guide plate 19 can guide the flow of the flue gas and perform a rough dust removal when the flue gas passes through.

[0031] The dust removal element 4 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.

[0032] The top of the above-mentioned air passage chamber 12 is provided with an insulation cover 7 which is detachably connected to the equipment housing 1. The insulation cover 7 cooperates with the double cover structure of the top cover 5 to insulate the tops of the air passage chamber 12 and the dust removal chamber 13 respectively, thereby reducing heat dissipation losses and ensuring the temperature required for the subsequent SCR catalyst reaction.

[0033] Furthermore, the SCR reactor 6 is hoisted on the upper part of the gas passage chamber 12, so that the heat preservation cover 7 can be opened conveniently for inspection and replacement.

[0034] The utility model also includes a blowing device 8 arranged above the dust removal chamber 13. When there is a lot of dust attached to the surface of the dust removal element 4, the resistance of the filter bag will increase. At this time, the blowing device 8 can be automatically started by program control to spray and clean the dust, ensuring low-resistance operation of the equipment.

[0035] The flue gas treatment process of the utility model is:

[0036] See also Figure 2 When the equipment is running, the inlet air valves 2 and the outlet air valves 3 work normally, and the flue gas is sucked into the equipment housing 1 under the action of negative pressure, and moves on the path of the lower part of the air chamber 12 - the dust removal chamber 13 - the upper part of the air chamber 12, and is successively dusted by the dust removal element 4 and denitrified by the SCR reactor, and finally the clean gas is discharged from the flue gas outlet 17.

[0037] 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, characterized in that: It includes equipment housing, inlet air valve, outlet air valve, dust removal element, top cover and SCR reactor; The device housing is provided with an air passage chamber and a dust removal chamber separated by a first partition, the air passage chamber is connected to the upper and lower ends of the dust removal chamber respectively, and a second partition is provided in the air passage chamber to divide the air passage chamber into an upper and lower part, and at least one third partition is provided in the dust removal chamber to divide the dust removal chamber into a plurality of independent chambers; a smoke inlet and a smoke outlet are respectively provided on both sides of the device housing, the smoke inlet is connected to the lower part of the air passage chamber, and the smoke outlet is connected to the upper part of the air passage chamber; An inlet air valve is provided between each independent chamber of the dust removal chamber and the lower part of the air passage chamber, an outlet air valve is provided between each independent chamber and the upper part of the air passage chamber, and a plurality of dust removal elements are provided in each independent chamber, the dust removal elements are pulled and fitted on the top of the device housing, and an openable and closable top cover is movably fitted on the top of each independent chamber to cover the top of the dust removal element; The SCR reactor is disposed in an upper portion of the gas passage chamber.

2. The integrated dust and saltpeter treatment equipment according to claim 1, characterized in that: The second partition is tilted in the air passage chamber, with a higher end connected to a side of the device housing where the smoke inlet is opened, and a lower end connected to a side of the device housing where the smoke outlet is opened.

3. The integrated dust and saltpeter treatment equipment according to claim 1, characterized in that: An ash hopper is arranged below each independent chamber of the dust removal chamber.

4. The integrated dust and saltpeter treatment equipment according to claim 3, characterized in that: A plurality of air guide plates are arranged at intervals in the ash hopper; the upper ends of the air guide plates are inclined toward the direction of the air passage chamber, and the side surfaces of the air guide plates face the dust removal chamber.

5. The integrated dust and saltpeter treatment equipment according to claim 1, characterized in that: The dust removal element adopts a high temperature resistant metal filter bag.

6. The integrated dust and saltpeter treatment equipment according to claim 1, characterized in that: The top of the air passage chamber is provided with a heat-insulating cover which is detachably connected to the device housing.

7. The integrated dust and saltpeter treatment equipment according to claim 6, characterized in that: The SCR reactor is suspended on the upper part of the gas passage chamber.

8. The integrated dust and saltpeter treatment equipment according to claim 1, characterized in that: It also includes a blowing device arranged above the dust removal chamber.

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