CN210993704U - Flue gas desulfurization device for coke oven ground dust removal station - Google Patents

Flue gas desulfurization device for coke oven ground dust removal station Download PDF

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Publication number
CN210993704U
CN210993704U CN201921508040.1U CN201921508040U CN210993704U CN 210993704 U CN210993704 U CN 210993704U CN 201921508040 U CN201921508040 U CN 201921508040U CN 210993704 U CN210993704 U CN 210993704U
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outlet
inlet
pipe
dust removal
removal station
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CN201921508040.1U
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李大路
李志�
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Taian Sunshine Tianrun Chemical Engineering Co ltd
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Taian Sunshine Tianrun Chemical Engineering Co ltd
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Abstract

The utility model relates to a desulfurization technical field just discloses a coke oven ground dust removal station flue gas desulphurization unit, come outer tube, water tank, submerged pump, raceway, drain pipe, check valve, desulfurizing tower, outlet pipe, circulating pump, shunt tubes, vice liquid pipeline, solenoid valve, connecting tube, defroster, filter screen and shower head including dust removal station, advance tobacco pipe, draught fan, air duct, former chimney, alkali lye pipe, process water, the import and the exit linkage who advances the tobacco pipe of dust removal station, the export of dust removal station and the access connection of draught fan, the export of draught fan and the access connection of air duct, the export of air duct and the access connection of former tobacco chimney, the export of former chimney and the access connection of desulfurizing tower. The utility model provides a fail SO2 desorption in the coke oven flue gas to and fail SO2 desorption to in the ground dust removal station flue gas, thereby cause the coke oven flue gas directly to discharge in the atmosphere, cause the pollution to the atmosphere, cause the problem that human life environmental quality declines.

Description

Flue gas desulfurization device for coke oven ground dust removal station
Technical Field
The utility model relates to the technical field of desulfurization, in particular to a flue gas desulfurization device for a ground dust removal station of a coke oven.
Background
Flue gas generated by coke ovens of a coke plant during operation cannot be removed from SO2 in the flue gas of the coke ovens and SO2 in the flue gas of a ground dust removal station, SO that the flue gas of the coke ovens is directly discharged into the atmosphere, the atmosphere is polluted, and the quality of the human living environment is reduced.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a coke oven ground dust removal station flue gas desulphurization unit reaches the coke-oven plant that the coke oven flue gas adopted two alkali method desulfurates, and its ground dust removal station flue gas desulfurization can adopt single alkali method desulfurization technology to match with it, in desorption coke oven flue gas SO2, with the effective desorption of SO2 in the ground dust removal station flue gas, discharge atmospheric purpose after reaching the emission index of national environmental protection requirement.
In order to achieve the above object, the utility model provides a following technical scheme: a flue gas desulfurization device of a coke oven ground dust removal station comprises a dust removal station, a smoke inlet pipe, an induced draft fan, an air guide pipe, a primary chimney, an alkali liquor guide pipe and process water from an outer pipe, a water tank, a submerged pump, a water delivery pipe, a drain pipe, a check valve, a desulfurization tower, a water outlet pipe, a circulating pump, a shunt pipe, a secondary liquor pipeline, an electromagnetic valve, a connecting pipeline, a demister, a filter screen and a spray header, wherein the inlet of the dust removal station is connected with the outlet of the smoke inlet pipe, the outlet of the dust removal station is connected with the inlet of the induced draft fan, the outlet of the induced draft fan is connected with the inlet of the air guide pipe, the outlet of the air guide pipe is connected with the inlet of the primary chimney, the outlet of the primary chimney is connected with the inlet of the desulfurization tower, the inlet of the desulfurization tower is connected with the outlet of the check valve, the inlet of the check valve at, The outer surface connection of filter screen and shower head, the import of defroster comes from the exit linkage of outer tube with the process water, the export of desulfurizing tower and the access connection of outlet pipe, the delivery port and the access connection of circulating pump of outlet pipe, the export of circulating pump and the access connection of shunt tubes, the export of shunt tubes respectively with the access connection of solenoid valve and connecting tube, the export of solenoid valve and the access connection of vice liquid pipeline, the export of connecting tube and the access connection of shower head, the export of submerged pump and the access connection of raceway, the export of raceway and the access connection of desulfurizing tower, the export of desulfurizing tower and the access connection of escape pipe, the export of escape pipe and the access connection of submerged pump, the bottom of submerged pump is connected with the inboard top of water tank.
Preferably, the demister is positioned right above the filter screen, and the filter screen is positioned right above the spray header.
Preferably, the dust removal station comprises a supporting seat, a fan, a first control valve, a dust remover, a second control valve and a smoke outlet pipe, the top of the supporting seat is connected with the bottom of the fan, the outlet of the fan is connected with the inlet of the first control valve, the outlet of the first control valve is connected with the inlet of the dust remover, the inlet of the dust remover is connected with the outlet of the second control valve, and the outlet of the dust remover is connected with the smoke inlet of the smoke outlet pipe.
Preferably, the outlet of the smoke inlet pipe is connected with the inlet of the second control valve.
Preferably, the outlet of the smoke outlet pipe is connected with the inlet of the induced draft fan.
Preferably, the dust removal station is positioned on the left side of the original chimney, and the original chimney is positioned on the left side of the desulfurization tower.
The utility model provides a flue gas desulfurization device for a ground dust removal station of a coke oven. The method has the following beneficial effects:
(1) the utility model discloses a defroster adopts the baffling board defroster, the defroster sets up automatic rinse-system, come from the outer tube through the process water and automatic regularly wash, guarantee that particulate matter can reach standard and discharge in the desulfurizing tower chimney outlet flue gas, the flue gas that comes out from coke oven ground dust removal station gets into the desulfurizing tower, the alkali lye that comes from coke oven flue gas desulfurization workshop section gets into the desulfurizing tower through the alkali lye pipe, squeeze into the desulfurizing tower shower head through the desulfurization circulating pump, the flue gas upwards flows in the tower and passes the spray layer, with doctor solution reverse contact, SO2 in this flue gas, pollutant such as dust is absorbed by the doctor solution, flue gas after the washing of spraying, after smoke and water smoke are removed through high-efficient dust removal defroster, from the chimney evacuation at desulfurizing tower top, in the desulfurizing tower, NaOH alkali lye in the desulfurization circulation absorption solution and SO2 from the flue gas capture, SO 5, HF, HCl etc. take place the chemical reaction, generate sodium sulfite and sodium bisulfite etc. material, discharge through absorbing tower top chimney emission, the flue gas top chimney emission of flue gas after removing flue gas flow through the defroster, SO2 removes the residual flue gas drop entrained in the flue gas stream, SO2 flue gas, SO2 ground 462 inner wall of desulfurization station adopts the SO 6335, SO2, the flue gas pollution-resistant flue gas removal process inner wall of desulfurization tower adopts the SO 2-SO 2 inner lining is designed to reach the national flue gas tightness requirement of desulfurization tower, the national flue gas removal technology-SO 2, the SO2 ground 462, the SO2 inner tube, the flue gas removal technology of desulfurization tower is a national flue gas removal technology-SO 2, the national flue gas removal technology-SO 2, SO2 inner liner is adopted the SO2, SO2 inner liner is a national flue gas leakage-2, the.
Drawings
FIG. 1 is a cross-sectional view of a desulfurizing tower of the present invention;
FIG. 2 is a front view of the dust removal station of the present invention;
fig. 3 is an enlarged view of a portion a in fig. 1 according to the present invention.
In the figure: the device comprises a dust removal station 1, a smoke inlet pipe 2, an induced draft fan 3, an air guide pipe 4, an original chimney 5, an alkali liquor guide pipe 6, and process water 7 from an outer pipe, a water tank 8, a submerged pump 9, a water delivery pipe 10, a drain pipe 11, a check valve 12, a desulfurizing tower 13, a water outlet pipe 14, a circulating pump 15, a flow dividing pipe 16, an auxiliary liquid pipeline 17, an electromagnetic valve 18, a connecting pipeline 19, a demister 20, a filter screen 21, a spray header 22, a support seat 101, a fan 102, a first control valve 103, a dust remover 104, a second control valve 105 and a smoke outlet pipe 106.
Detailed Description
As shown in fig. 1-3, the utility model provides a technical solution: a flue gas desulfurization device of a coke oven ground dust removal station comprises a dust removal station 1, a smoke inlet pipe 2, an induced draft fan 3, a gas guide pipe 4, an original chimney 5, an alkali liquor conduit 6, process water from an outer pipe 7, a water tank 8, a submerged pump 9, a water delivery pipe 10, a drain pipe 11, a check valve 12, a desulfurization tower 13, a water outlet pipe 14, a circulating pump 15, a shunt pipe 16, an auxiliary liquid pipeline 17, an electromagnetic valve 18, a connecting pipeline 19, a demister 20, a filter screen 21 and a spray header 22, wherein the inlet of the dust removal station 1 is fixedly connected with the outlet of the smoke inlet pipe 2, the outlet of the dust removal station 1 is fixedly connected with the inlet of the induced draft fan 3, the outlet of the induced draft fan 3 is fixedly connected with the inlet of the gas guide pipe 4, the outlet of the gas guide pipe 4 is fixedly connected with the inlet of the original chimney 5, the outlet of the original chimney 5 is fixedly connected with the inlet of the desulfurization tower 13, the inlet of the desulfurization tower, the inlet of the check valve 12 positioned at the top end is fixedly connected with the outlet of the process water from the outer pipe 7, the inner wall of the desulfurizing tower 13 is fixedly connected with the outer surfaces of a demister 20, a filter screen 21 and a spray header 22 respectively, the inlet of the demister 20 is fixedly connected with the outlet of the process water from the outer pipe 7, the outlet of the desulfurizing tower 13 is fixedly connected with the inlet of a water outlet pipe 14, the water outlet of the water outlet pipe 14 is fixedly connected with the inlet of a circulating pump 15, the outlet of the circulating pump 15 is fixedly connected with the inlet of a shunt pipe 16, the outlet of the shunt pipe 16 is fixedly connected with the inlet of an electromagnetic valve 18 and a connecting pipeline 19 respectively, the outlet of the electromagnetic valve 18 is fixedly connected with the inlet of an auxiliary liquid pipeline 17, the outlet of the connecting pipeline 19 is fixedly connected with the inlet of the spray header 22, the outlet of a submerged pump 9 is fixedly connected with the inlet of a water pipe 10, the outlet of the water pipe, the outlet of the drain pipe 11 is fixedly connected with the inlet of the submerged pump 9, and the bottom of the submerged pump 9 is fixedly connected with the top of the inner side of the water tank 8.
Further, the demister 20 is located directly above the screen 21, and the screen 21 is located directly above the shower head 22.
Further, the dust removing station 1 comprises a supporting seat 101, a fan 102, a first control valve 103, a dust remover 104, a second control valve 105 and a smoke outlet pipe 106, wherein the top of the supporting seat 101 is fixedly connected with the bottom of the fan 102, the outlet of the fan 102 is fixedly connected with the inlet of the first control valve 103, the outlet of the first control valve 103 is fixedly connected with the inlet of the dust remover 104, the inlet of the dust remover 104 is fixedly connected with the outlet of the second control valve 105, and the outlet of the dust remover 104 is fixedly connected with the smoke inlet of the smoke outlet pipe 106.
Further, the outlet of the smoke inlet pipe is fixedly connected with the inlet of the second control valve 105.
Further, the outlet of the smoke outlet pipe 106 is fixedly connected with the inlet of the draught fan 3.
Further, the dust removal station 1 is positioned on the left side of the original chimney 5, and the original chimney 5 is positioned on the left side of the desulfurizing tower 13.
When the desulfurizing tower is used, the demister 20 adopts a baffle plate demister, the demister 20 is provided with an automatic flushing system, process water is automatically and periodically flushed from an outer pipe 7 to ensure that particles in flue gas at a chimney outlet of the desulfurizing tower can reach the standard and be discharged, the flue gas discharged from a coke oven ground dust removal station 1 enters the desulfurizing tower 13, alkali liquor from a coke oven flue gas desulfurization section enters the desulfurizing tower 13 through an alkali liquor conduit 6, the alkali liquor is pumped into a spray head 22 of the desulfurizing tower through a desulfurization circulating pump 15, the flue gas flows upwards in the tower to pass through a spray layer and is in reverse contact with desulfurizing liquid, pollutants such as SO2 and dust in the flue gas are absorbed by the desulfurizing liquid, the flue gas after being sprayed and washed is discharged from a chimney at the top of the desulfurizing tower after water mist and smoke dust are removed through the high-efficiency dust removal demister 20, the alkali liquor in the desulfurizing circulating absorption liquid and SO 45, SO3, HF, HCl and the like captured from the flue gas are subjected to chemical reaction to generate substances such as sodium sulfite and sodium bisulfite, the generation, the sodium sulfite and the sodium bisulfite are discharged through a top flue gas-sulfur dioxide absorption tower, the absorption tower top smoke-corrosion-resistant coating alumina oxide-sodium carbonate-carbonate (sodium carbonate) corrosion-carbonate (sodium carbonate) 2) corrosion-carbonate) 2 oxide (sodium carbonate) corrosion-resistant glass liner which is welded with a desulfurizing tower body which is welded on an inner wall of a desulfurizing tower body which is designed according to ensure that the outer wall of a desulfurizing tower body which adopts a corrosion-resistant desulfurizing tower.
In conclusion, the coke-oven plant adopting the double-alkali method for desulfurization of the coke-oven flue gas can obtain the coke-oven plant adopting the double-alkali method for desulfurization of the coke-oven flue gas, the flue gas desulfurization of the ground dust removal station 1 can adopt the single-alkali method for matching with the single-alkali method, the SO2 in the flue gas of the ground dust removal station 1 is effectively removed while the SO2 in the coke-oven flue gas is removed, the purpose of discharging the flue gas into the atmosphere after the emission index of national environmental protection requirements is reached is achieved, and the desulfurization process follows the mature technology, the equipment is advanced, the operation is stable. The method can ensure high availability ratio, high desulfurization rate, low power consumption and low water consumption, and completely meets the requirement of environmental protection, the desulfurization process is suitable for load changes and fluctuations such as temperature, sulfur dioxide concentration and the like, the desulfurizer and byproduct materials are conveyed and circulated smoothly, the capabilities are matched, the desulfurizer is low in price and easy to obtain, and no secondary pollutant is generated.

Claims (6)

1. The utility model provides a coke oven ground dust removal station flue gas desulphurization unit, including dust removal station (1), advance tobacco pipe (2), draught fan (3), air duct (4), former chimney (5), alkali lye pipe (6), the process water comes from outer tube (7), water tank (8), submerged pump (9), raceway (10), drain pipe (11), check valve (12), desulfurizing tower (13), outlet pipe (14), circulating pump (15), shunt tubes (16), vice liquid pipeline (17), solenoid valve (18), connecting tube (19), defroster (20), filter screen (21) and shower head (22), its characterized in that: the inlet of the dust removal station (1) is connected with the outlet of the smoke inlet pipe (2), the outlet of the dust removal station (1) is connected with the inlet of the draught fan (3), the outlet of the draught fan (3) is connected with the inlet of the air duct (4), the outlet of the air duct (4) is connected with the inlet of the original chimney (5), the outlet of the original chimney (5) is connected with the inlet of the desulfurizing tower (13), the inlet of the desulfurizing tower (13) is connected with the outlet of the check valve (12), the inlet of the check valve (12) at the bottom end is connected with the inlet of the alkali liquor duct (6), the inlet of the check valve (12) at the top end is connected with the outlet of the process water from the outer pipe (7), the inner wall of the desulfurizing tower (13) is respectively connected with the demister (20), the outer surfaces of the filter screen (21) and the spray header (22), the inlet of the demister (20) is connected with the outlet of the process water, the outlet of the desulfurizing tower (13) is connected with the inlet of the water outlet pipe (14), the water outlet of the water outlet pipe (14) is connected with the inlet of the circulating pump (15), the outlet of the circulating pump (15) is connected with the inlet of the shunt pipe (16), the outlet of the shunt pipe (16) is respectively connected with the inlets of the electromagnetic valve (18) and the connecting pipeline (19), the outlet of the electromagnetic valve (18) is connected with the inlet of the secondary liquid pipeline (17), the outlet of the connecting pipeline (19) is connected with the inlet of the spray header (22), the outlet of the submerged pump (9) is connected with the inlet of the water conveying pipe (10), the outlet of the water conveying pipe (10) is connected with the inlet of the desulfurizing tower (13), the outlet of the desulfurizing tower (13) is connected with the inlet of the drain pipe (11), the outlet of the drain pipe (11) is connected with the inlet of the submerged pump (9), and the bottom of the submerged pump (9) is connected with the top of the.
2. The flue gas desulfurization device for the ground dust removal station of the coke oven as set forth in claim 1, wherein: the demister (20) is positioned right above the filter screen (21), and the filter screen (21) is positioned right above the spray header (22).
3. The flue gas desulfurization device for the ground dust removal station of the coke oven as set forth in claim 1, wherein: the dust removal station (1) comprises a supporting seat (101), a fan (102), a first control valve (103), a dust remover (104), a second control valve (105) and a smoke outlet pipe (106), the top of the supporting seat (101) is connected with the bottom of the fan (102), the outlet of the fan (102) is connected with the inlet of the first control valve (103), the outlet of the first control valve (103) is connected with the inlet of the dust remover (104), the inlet of the dust remover (104) is connected with the outlet of the second control valve (105), and the outlet of the dust remover (104) is connected with the smoke inlet of the smoke outlet pipe (106).
4. The flue gas desulfurization device for the ground dust removal station of the coke oven as set forth in claim 3, wherein: the outlet of the smoke inlet pipe is connected with the inlet of a second control valve (105).
5. The flue gas desulfurization device for the ground dust removal station of the coke oven as set forth in claim 3, wherein: the outlet of the smoke outlet pipe (106) is connected with the inlet of the draught fan (3).
6. The flue gas desulfurization device for the ground dust removal station of the coke oven as set forth in claim 1, wherein: the dust removal station (1) is positioned on the left side of the original chimney (5), and the original chimney (5) is positioned on the left side of the desulfurizing tower (13).
CN201921508040.1U 2019-09-11 2019-09-11 Flue gas desulfurization device for coke oven ground dust removal station Active CN210993704U (en)

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CN201921508040.1U CN210993704U (en) 2019-09-11 2019-09-11 Flue gas desulfurization device for coke oven ground dust removal station

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CN201921508040.1U CN210993704U (en) 2019-09-11 2019-09-11 Flue gas desulfurization device for coke oven ground dust removal station

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112403237A (en) * 2020-10-22 2021-02-26 苏州创之杰环保设备工程有限公司 Active coke flue gas desulfurization process and device thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112403237A (en) * 2020-10-22 2021-02-26 苏州创之杰环保设备工程有限公司 Active coke flue gas desulfurization process and device thereof

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