Tail gas desulfurization device of garbage incinerator

Abstract

The utility model discloses a tail gas desulfurization device of a garbage incinerator. The tail gas desulfurization device comprises a heat exchange dust removal box and a desulfurization tower, the heat exchange dust removal box is provided with a first air inlet and a first air outlet. The desulfurizing tower is provided with a second gas inlet and a second gas outlet; a heat exchange assembly and a dust removal assembly are arranged in the heat exchange dust removal box; a desulfurization pool, a spraying part and a detection chamber are arranged in the desulfurization tower; a gas distribution plate is arranged in the desulfurization pool; the spraying part is provided with an air guide layer plate and a spraying frame; the detection chamber is provided with a detection unit; according to the method, tail gas is desulfurized based on a desulfurization device. The desulfurization device comprises a heat exchange dust removal box and a desulfurization tower, the desulfurization tower sequentially comprises a desulfurization pool, a spraying part and a detection chamber, a gas distribution plate is arranged in the desulfurization pool to guide tail gas, the tail gas fully reacts in the desulfurization pool, a gas guide layer plate is arranged on the spraying part to play a collecting role, the tail gas is gathered to the highest position of the gas guide layer plate to be sprayed, and the spraying cost is reduced; the device has the advantages of relatively low spraying cost and relatively high desulfurization efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of garbage incineration treatment, in particular to a waste incinerator tail gas desulfurization device. Background Art

[0002] Waste incineration power generation generally involves burning domestic waste in an incinerator. A large amount of waste gas will be generated during the incineration process, and most incinerators will directly discharge the waste gas generated during the incineration process. The waste gas generated by incineration contains a large amount of toxic substances, which will cause air pollution if directly discharged into the air.

[0003] To this end, the generated flue gas needs to be purified, enter the corresponding purification equipment for desulfurization and denitrification, and then enter the bag filter to remove the particulate dust in the flue gas before being discharged.

[0004] The existing desulfurization equipment first passes the flue gas into the desulfurization pool, and then uses a spraying method to spray and clean the rising flue gas, and uses the chemical components in the spraying liquid to react with the sulfur-containing components in the flue gas to achieve desulfurization;

[0005] However, the existing desulfurization equipment has a simple structure and only cleans the flue gas by spraying. In order to ensure that the flue gas can be fully sprayed, a large number of spraying equipment need to be arranged, the spraying cost is high, and part of the spraying liquid does not react with the sulfur-containing substances in the flue gas, so the desulfurization efficiency is relatively low. Utility Model Content

[0006] The purpose of the utility model is to provide a waste incinerator tail gas desulfurization device. The utility model has the advantages of relatively low spraying cost and relatively high desulfurization efficiency.

[0007] The technical solution of the utility model: a waste incinerator tail gas desulfurization device comprises a mounting seat, a heat exchange dust removal box arranged on the front side of the mounting seat and a desulfurization tower located at the rear side of the heat exchange dust removal box; the heat exchange dust removal box is provided with a No. 1 air inlet at the bottom on the left side and a No. 1 air outlet at the top on the right side; the desulfurization tower is provided with a No. 2 air inlet at the bottom on the left side and a No. 2 air outlet at the top on the left side; a heat exchange component is provided at the bottom of the heat exchange dust removal box, and a dust removal component is provided above the heat exchange component; the desulfurization tower is provided with a desulfurization pool at the bottom, a spray part in the middle, and a There is a detection room; the desulfurization pool is provided with an air distribution plate corresponding to the No. 2 air inlet; the spray part is provided with a plurality of evenly distributed air guide plates and spray racks; the detection room is provided with a detection unit; the No. 1 air outlet is connected to the No. 2 air inlet through a conveying pipe; an L-shaped sealing layer plate is provided at the bottom of the detection room, and the detection unit is erected between the right side of the sealing layer plate and the inner side of the desulfurization tower; the dust removal assembly includes a mounting frame and a plurality of dust removal bags detachably arranged in the mounting frame; a box door corresponding to the dust removal assembly is provided on the rear side of the heat exchange dust removal box.

[0008] In the aforementioned waste incinerator exhaust gas desulfurization device, an exhaust unit is provided at the top of the desulfurization tower, and a smoke return unit is provided on the left side of the desulfurization tower; the left side of the exhaust unit is connected to the No. 2 air outlet through an air supply pipe, and a smoke exhaust pipe is provided on the right side; the top of the smoke return unit is connected to the return air port at the top of the left side of the desulfurization tower through an air supply pipe, and the bottom is connected to the No. 2 air inlet through the smoke return pipe.

[0009] In the aforementioned waste incinerator exhaust gas desulfurization device, the heat exchange component includes a hollow frame and a plurality of heat exchange tubes evenly distributed in the frame; the bottom left side of the frame is connected to the No. 1 air inlet, and a slot is provided at the top left side; the heat exchange tubes are distributed in a U shape in the frame, and an isolation plate is provided on the left side of the middle of the frame; the heat exchange tubes pass through the frame and the heat exchange dust removal box in sequence and are connected to the heat exchange equipment located at the rear side of the heat exchange dust removal box; the heat exchange equipment is provided with heat exchange fluid.

[0010] In the aforementioned waste incinerator tail gas desulfurization device, the air distribution plate is Z-shaped, and a plurality of air holes are evenly distributed on the bottom of the air distribution plate; the air guide layer plate is inclined, and the spray frame is installed at the highest point of the corresponding air guide layer plate; a gas diversion plate is correspondingly provided below the spray frame; a plurality of air guide grooves are evenly distributed on the gas diversion plate, and the cross-section of the air guide groove is funnel-shaped with a larger upper part and a smaller lower part; an infusion pipe is vertically provided on the right side of the desulfurization tower; the bottom of the infusion pipe is connected to the spray equipment, and a plurality of diversion pipes respectively connected to the spray frames are provided on the infusion pipe.

[0011] Compared with the prior art, the utility model provides a high-efficiency desulfurization device for waste incineration tail gas, the desulfurization device comprises a heat exchange dust removal box and a desulfurization tower, the desulfurization tower is divided into a desulfurization pool, a spraying part and a detection room from bottom to top, and an air distribution plate is arranged in the desulfurization pool to limit the drainage of tail gas, so that the tail gas can fully react in the desulfurization pool, and then an air guide layer plate is arranged in the spraying part to collect the tail gas, and the tail gas is uniformly gathered at the highest point of the air guide layer plate for spraying, without the need for large-scale spraying, thereby reducing the spraying cost;

[0012] By limiting the collection of tail gas, etc., we ensure that the tail gas can fully undergo desulfurization reaction, and the desulfurization efficiency is relatively higher.

[0013] Therefore, the utility model has the advantages of relatively low spraying cost and relatively high desulfurization efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the desulfurization device of the utility model;

[0015] Figure 2 It is a cross-sectional view of a gas splitter plate in the desulfurization device of the utility model.

[0016] The marks in the attached drawings are: 1-heat exchange and dust removal box, 11-air inlet No. 1, 12-delivery pipe, 13-dust removal assembly, 2-desulfurization tower, 21-air inlet No. 2, 22-desulfurization tank, 23-spraying part, 24-detection chamber, 25-air guide layer plate, 26-sealing layer plate, 3-heat exchange assembly, 41-air distribution plate, 42-air vents, 51-infusion tube, 52-spray rack, 6-gas diverter plate, 61-air guide groove, 71-exhaust unit, 72-smoke return unit, 73-smoke exhaust pipe, 74-smoke return pipe, 8-detection unit, 9-mounting seat. DETAILED DESCRIPTION

[0017] The present invention is further described below in conjunction with the accompanying drawings and embodiments, but they are not intended to limit the present invention.

[0018] Example. Waste incinerator tail gas desulfurization device, such as Figure 1 and 2 , including a mounting seat 9, a heat exchange dust removal box 1 arranged on the front side of the mounting seat 9, and a desulfurization tower 2 located at the rear side of the heat exchange dust removal box 1; the heat exchange dust removal box 1 is provided with a No. 1 air inlet 11 at the bottom of the left side and a No. 1 air outlet at the top of the right side; the desulfurization tower 2 is provided with a No. 2 air inlet 21 at the bottom of the left side and a No. 2 air outlet at the top left; the heat exchange dust removal box 1 is provided with a heat exchange component 3 at the bottom, and a dust removal component 13 is provided above the heat exchange component 3; the desulfurization tower 2 is provided with a desulfurization pool 22 at the bottom, a spray part 23 in the middle, and a detection chamber 24 at the top; the desulfurization pool 22 is provided with An air distribution plate 41 corresponds to the No. 2 air inlet 21; the spray section 23 is provided with a plurality of evenly distributed air guide plates 25 and a spray rack 52; a detection unit 8 is provided in the detection chamber 24; the No. 1 air outlet is connected to the No. 2 air inlet 21 through a conveying pipe 12; an L-shaped sealing layer plate 26 is provided at the bottom of the detection chamber 24, and the detection unit 8 is erected between the right side of the sealing layer plate 26 and the inner side of the desulfurization tower 2; the dust removal assembly 13 includes a mounting frame and a plurality of detachable dust removal bags arranged in the mounting frame; a box door corresponding to the dust removal assembly 13 is provided on the rear side of the heat exchange dust removal box 1.

[0019] An exhaust unit 71 is provided at the top of the desulfurization tower 2, and a smoke return unit 72 is provided on the left side of the desulfurization tower 2; the left side of the exhaust unit 71 is connected to the No. 2 air outlet through an air supply pipe, and a smoke exhaust pipe 73 is provided on the right side; the top of the smoke return unit 72 is connected to the return air port at the top of the left side of the desulfurization tower 2 through an air supply pipe, and the bottom is connected to the No. 2 air inlet 21 through a smoke return pipe 74.

[0020] The heat exchange assembly 3 includes a hollow frame and a plurality of heat exchange tubes evenly distributed in the frame; the bottom left side of the frame is connected to the No. 1 air inlet 11, and a slot is provided at the top left side; the heat exchange tubes are distributed in a U shape in the frame, and an isolation plate is provided on the left side of the middle of the frame; the heat exchange tubes pass through the frame and the heat exchange dust removal box 1 in sequence and are connected to the heat exchange equipment located at the rear side of the heat exchange dust removal box 1; a heat exchange liquid is provided in the heat exchange equipment.

[0021] The air distribution plate 41 is Z-shaped, and a plurality of air holes 42 are evenly distributed at the bottom of the air distribution plate 41; the air guide plate 25 is tilted, and the spray rack 52 is mounted at the highest point of the corresponding air guide plate 25; a gas diverter plate 6 is correspondingly arranged below the spray rack 52; Figure 2 As shown, a plurality of gas guide grooves 61 are evenly distributed on the gas diversion plate 6, and the cross-section of the gas guide groove 61 is funnel-shaped with a larger upper portion and a smaller lower portion; a liquid infusion pipe 51 is vertically provided on the right side of the desulfurization tower 2; the bottom of the liquid infusion pipe 51 is connected to the spray equipment, and a plurality of diversion pipes respectively connected to the spray rack 52 are provided on the liquid infusion pipe 51.

Claims

1. Waste incinerator tail gas desulfurization device, characterized by: The invention comprises a mounting seat (9), a heat exchange dust removal box (1) arranged on the front side of the mounting seat (9), and a desulfurization tower (2) located on the rear side of the heat exchange dust removal box (1); the heat exchange dust removal box (1) is provided with a first air inlet (11) at the bottom of the left side, and a first air outlet at the top of the right side; the desulfurization tower (2) is provided with a second air inlet (21) at the bottom of the left side, and a second air outlet at the top of the left side; the heat exchange dust removal box (1) is provided with a heat exchange component (3) at the bottom, and a dust removal component (13) is provided above the heat exchange component (3); the desulfurization tower (2) is provided with a desulfurization pool (22) at the bottom, a spraying part (23) in the middle, and a detection chamber (24) at the top; the desulfurization pool (22) is provided with An air distribution plate (41) corresponding to the No. 2 air inlet (21); the spray section (23) is provided with a plurality of evenly distributed air guide layer plates (25) and a spray rack (52); a detection unit (8) is provided in the detection chamber (24); the No. 1 air outlet is connected to the No. 2 air inlet (21) via a conveying pipe (12); an L-shaped sealing layer plate (26) is provided at the bottom of the detection chamber (24), and the detection unit (8) is mounted between the right side of the sealing layer plate (26) and the inner side of the desulfurization tower (2); the dust removal component (13) includes a mounting frame and a plurality of dust removal bags detachably arranged in the mounting frame; and a box door corresponding to the dust removal component (13) is provided at the rear side of the heat exchange dust removal box (1).

2. The waste incinerator tail gas desulfurization device according to claim 1 is characterized in that: An exhaust unit (71) is provided at the top of the desulfurization tower (2), and a smoke return unit (72) is provided at the left side of the desulfurization tower (2); the left side of the exhaust unit (71) is connected to the second gas outlet via an air supply pipe, and a smoke exhaust pipe (73) is provided at the right side; the top of the smoke return unit (72) is connected to the gas return port at the top of the left side of the desulfurization tower (2) via an air supply pipe, and the bottom is connected to the second gas inlet (21) via a smoke return pipe (74).

3. The waste incinerator tail gas desulfurization device according to claim 1 is characterized in that: The heat exchange assembly (3) comprises a hollow frame and a plurality of heat exchange tubes evenly distributed in the frame; the left bottom of the frame is connected to the No. 1 air inlet (11), and a slot is provided at the left top; the heat exchange tubes are distributed in a U-shape in the frame, and an isolation plate is provided on the left side of the middle of the frame; the heat exchange tubes sequentially penetrate the frame and the heat exchange dust removal box (1) and are connected to a heat exchange device located at the rear side of the heat exchange dust removal box (1); a heat exchange liquid is provided in the heat exchange device.

4. The waste incinerator tail gas desulfurization device according to claim 1, characterized in that: The air distribution plate (41) is in a Z-shape, and a plurality of air holes (42) are evenly distributed on the bottom of the air distribution plate (41); the air guide layer plate (25) is arranged at an angle, and the spray rack (52) is arranged at the highest point of the corresponding air guide layer plate (25); a gas diverter plate (6) is arranged below the spray rack (52); a plurality of air guide grooves (61) are evenly distributed on the gas diverter plate (6), and the cross section of the air guide groove (61) is in a funnel shape with a larger upper portion and a smaller lower portion; a liquid infusion pipe (51) is vertically arranged on the right side of the desulfurization tower (2); the bottom of the liquid infusion pipe (51) is connected to the spray equipment, and a plurality of diverter pipes respectively connected to the spray rack (52) are arranged on the liquid infusion pipe (51).

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