CN216358925U - Limestone-gypsum wet desulphurization absorption tower - Google Patents
Limestone-gypsum wet desulphurization absorption tower Download PDFInfo
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- CN216358925U CN216358925U CN202123200820.XU CN202123200820U CN216358925U CN 216358925 U CN216358925 U CN 216358925U CN 202123200820 U CN202123200820 U CN 202123200820U CN 216358925 U CN216358925 U CN 216358925U
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Abstract
A limestone-gypsum wet desulphurization absorption tower comprises an absorption tower, a limestone slurry supply device, a slurry circulating pipe, a flue gas inlet, a slurry circulating pump, an exhaust port, a nozzle, a gas-liquid rotational flow uniform distribution device, a gypsum dehydration system, a demister and a chimney; the lower part of absorption tower supplies thick liquid device intercommunication with gypsum dewatering system and lime stone respectively, the absorption tower has flue gas entry and gas vent, the inside gas-liquid whirl equipartition device that sets up of absorption tower, gas-liquid whirl equipartition device is higher than the flue gas entry, set up a plurality of nozzles in the absorption tower, a plurality of nozzles are located gas-liquid whirl equipartition device upper portion, the bottom intercommunication of nozzle through thick liquid circulating pipe and absorption tower, install the thick liquid circulating pump on the thick liquid circulating pipe, set up the defroster in the absorption tower, the defroster is located nozzle upper portion, gas vent and chimney intercommunication. The gas-liquid cyclone uniform distribution device increases the retention time of the flue gas in the absorption tower, so that the flue gas is reacted with sulfur dioxide more thoroughly under the action of turbulent flow, and the desulfurization efficiency reaches 98.5-99%.
Description
Technical Field
The utility model relates to the field of environmental protection, in particular to a limestone-gypsum wet desulphurization absorption tower.
Background
With the increasing environmental protection requirement, the concentration of sulfur dioxide discharged from a boiler chimney is required to be less than 35mg/Nm3, the conventional single-tower single-circulation empty tower spraying process in the prior art is difficult to meet the requirement of high desulfurization efficiency, particularly when the sulfur content of fire coal is high and the concentration of sulfur dioxide discharged from boiler combustion is high, the desulfurization efficiency of a desulfurization system is required to be more than 98.5 percent, even the desulfurization efficiency is required to be more than 99 percent, so a new desulfurization technical route is required to achieve high efficiency so as to meet the new requirements of environmental protection and regulations. Solves the problems of low desulfurization efficiency, complex process flow, unstable equipment operation and the like in the prior art.
Disclosure of Invention
The utility model aims to solve the problem of low desulfurization efficiency in the prior art, and provides a limestone-gypsum wet desulfurization absorption tower. The desulfurization efficiency is high, and the equipment operation is stable.
A limestone-gypsum wet desulphurization absorption tower comprises an absorption tower, a limestone slurry supply device, a slurry circulating pipe, a flue gas inlet, a slurry circulating pump, an exhaust port, a nozzle, a gas-liquid rotational flow uniform distribution device, a gypsum dehydration system, a demister and a chimney; the lower part of absorption tower supplies thick liquid device intercommunication with gypsum dewatering system and lime stone respectively, the absorption tower has the flue gas entry, the inside gas-liquid whirl equipartition device that sets up of absorption tower, gas-liquid whirl equipartition device is higher than the flue gas entry, set up a plurality of nozzles in the absorption tower, a plurality of nozzles are located gas-liquid whirl equipartition device upper portion, the nozzle passes through the bottom intercommunication of thick liquid circulating pipe with the absorption tower, install the slurry circulating pump on the thick liquid circulating pipe, set up the defroster in the absorption tower, the defroster is located nozzle upper portion, the absorption tower has the gas vent, gas vent and chimney intercommunication.
The utility model has the beneficial effects that:
1. add in the absorption tower and establish gas-liquid whirl equipartition device, increased the dwell time of flue gas in the absorption tower, make the flue gas under the effect of torrent, the more thorough of sulfur dioxide reaction has increased the thickness of liquid film, in the desulfurization, also has fine dust removal effect, great improvement desulfurization rate and gypsum crystallization rate.
2. The desulfurization efficiency of the utility model reaches 98.5-99%.
Drawings
Fig. 1 is a schematic structural view of the present invention.
Wherein: 1-absorption tower, 2-limestone slurry supply device, 3-slurry circulating system, 4-flue gas inlet, 5-slurry circulating pump, 6-exhaust port, 7-nozzle, 8-gas-liquid cyclone uniform distribution device, 9-gypsum dewatering system, 10-demister and 11-chimney.
Detailed Description
As shown in fig. 1, a limestone-gypsum wet desulphurization absorption tower comprises an absorption tower 1, a limestone slurry supply device 2, a slurry circulating pipe 3, a flue gas inlet 4, a slurry circulating pump 5, an exhaust port 6, a nozzle 7, a gas-liquid rotational flow uniform distribution device 8, a gypsum dehydration system 9, a demister 10 and a chimney 11; absorption tower 1's lower part supplies thick liquid device 2 intercommunication with gypsum dewatering system 9 and lime stone respectively, absorption tower 1 has flue gas entry 4, 1 inside gas-liquid whirl equipartition device 8 that sets up of absorption tower, gas-liquid whirl equipartition device 8 is higher than flue gas entry 4, set up a plurality of nozzles 7 in the absorption tower 1, a plurality of nozzles 7 are located 8 upper portions of gas-liquid whirl equipartition device, nozzle 7 passes through the bottom intercommunication of thick liquid circulating pipe 3 with absorption tower 1, install slurry circulating pump 5 on the thick liquid circulating pipe 3, set up defroster 10 in the absorption tower 1, defroster 10 is located nozzle 7 upper portion, absorption tower 1 has gas vent 6, gas vent 6 and chimney 11 intercommunication.
The working process of the utility model is as follows:
the sulfur-containing gas enters from the flue gas inlet 4, the gas-liquid cyclone uniform distribution device 8 enables the sulfur-containing gas and the slurry to be uniformly distributed, the limestone slurry supply device 2 conveys limestone slurry into the absorption tower 1, the slurry circulating pump 5 conveys the limestone slurry to the nozzle 7 above the limestone slurry to spray the limestone slurry downwards, the limestone slurry reacts with the sulfur-containing gas, the gypsum slurry generated by the reaction is conveyed to the gypsum dehydration system 9 to be treated, and the treated gas reaching the emission standard is demisted by the demister 10 and then enters the chimney 11 to be discharged from the exhaust port 6.
Because gas-liquid whirl equipartition device 8 makes sour gas and thick liquid evenly distributed, increased the dwell time of sour gas in absorption tower 1 tower, make under the effect of torrent, the sulfur dioxide reaction more thorough, increased the thickness of liquid film, in the desulfurization, also have fine dust removal effect, great improvement desulfurization rate and gypsum crystallization rate.
The desulfurization efficiency of the utility model reaches 98.5-99%.
Claims (1)
1. The limestone-gypsum wet desulphurization absorption tower is characterized in that: comprises an absorption tower (1), a limestone slurry supply device (2), a slurry circulating pipe (3), a flue gas inlet (4), a slurry circulating pump (5), an exhaust port (6), a nozzle (7), a gas-liquid cyclone uniform distribution device (8), a gypsum dewatering system (9), a demister (10) and a chimney (11); the lower part of absorption tower (1) supplies thick liquid device (2) to communicate with gypsum dewatering system (9) and lime stone respectively, absorption tower (1) has flue gas entry (4), inside gas-liquid whirl equipartition device (8) that sets up of absorption tower (1), gas-liquid whirl equipartition device (8) are higher than flue gas entry (4), set up a plurality of nozzles (7) in absorption tower (1), a plurality of nozzles (7) are located gas-liquid whirl equipartition device (8) upper portion, nozzle (7) are through the bottom intercommunication of slurry circulating pipe (3) with absorption tower (1), install slurry circulating pump (5) on slurry circulating pipe (3), set up defroster (10) in absorption tower (1), defroster (10) are located nozzle (7) upper portion, absorption tower (1) have gas vent (6), gas vent (6) and chimney (11) intercommunication.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123200820.XU CN216358925U (en) | 2021-12-20 | 2021-12-20 | Limestone-gypsum wet desulphurization absorption tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123200820.XU CN216358925U (en) | 2021-12-20 | 2021-12-20 | Limestone-gypsum wet desulphurization absorption tower |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216358925U true CN216358925U (en) | 2022-04-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123200820.XU Active CN216358925U (en) | 2021-12-20 | 2021-12-20 | Limestone-gypsum wet desulphurization absorption tower |
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| CN (1) | CN216358925U (en) |
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2021
- 2021-12-20 CN CN202123200820.XU patent/CN216358925U/en active Active
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