CN201811262U - Tail gas dehumidification device for wet-process flue gas purification - Google Patents
Tail gas dehumidification device for wet-process flue gas purification Download PDFInfo
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- CN201811262U CN201811262U CN201020543336XU CN201020543336U CN201811262U CN 201811262 U CN201811262 U CN 201811262U CN 201020543336X U CN201020543336X U CN 201020543336XU CN 201020543336 U CN201020543336 U CN 201020543336U CN 201811262 U CN201811262 U CN 201811262U
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- flue gas
- demister
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- water tank
- flue
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Abstract
The utility model discloses a tail gas dehumidification device for wet-process flue gas purification, belonging to the technical field of boiler flue gas purification. The tail gas dehumidification device is characterized in that a gas lifting cap (9), a washing nozzle (10), an upper demister and a lower demister are sequentially arranged on a desulphurization tower (1) from bottom to top; the washing nozzle is communicated with a water storage tank (3) through a spray pipeline (4); flushing nozzles which are respectively arranged on the upper surface and the lower surface of the upper demister and the lower demister are communicated with the water storage tank (3) through sprayer flushing pipelines; the desulphurization tower is communicated with a chimney (25) through a flue gas pipe; and a water collection tank (18) which is communicated with a condensate collection tank (19) is arranged at the lower part of a horizontal pipe at the end of the flue gas pipe, and the condensate collection tank (19) is communicated with the water storage tank (3). Since water spray, demisting, liquid interception, recycling and the like are conducted to desulphurized flue gas, the purified flue gas which enters a flue and the chimney does not contain liquid water, and the desulphurization efficiency and the byproduct recovery rate are improved.
Description
Technical field
The utility model belongs to the boiler flue gas purification technical field, relates generally to a kind of dehydrating unit of wet type flue gas desulphurization tail gas.
Background technology
In the wet desulphurization denitrating technique, because of a large amount of liquid materials spray in purifying column, the less liquid pearl of part particle diameter is easily taken out of outside the tower by flue gas and enters flue.With the reduction of flue-gas temperature, steam can further condense and compile in flue, forms comparatively significantly flue runoff.This liquid runoff not only influences the rate of recovery of accessory substance, and can increase the weight of the corrosion of flue, air-introduced machine, chimney if do not remove before flue gas enters chimney and reclaim.
Contain moisture and multiple corrosivity composition in the clean flue gas after the desulfurization, contain NH in the globule that flue gas is taken out of
4 +, SO
4 2-, SO
3 2-, NO
2 -, NO
3 -Etc. different kinds of ions, outer or on the smoke pipe wall, condense if the globule is taken out of tower, will flow into cement flue, boiler induced-draft fan, chimney etc. along smoke pipe and locate, the said equipment or member are caused corrosion, can be when serious from the junction or the slit ooze out contaminated environment.
Summary of the invention
The purpose of this utility model is the dehydrating unit that proposes a kind of wet type flue gas desulphurization tail gas, flue gas after desulfurization is carried out water spray, demist, the interception of liquid stream, recycling etc., make the purification flue gas that enters flue and chimney not contain aqueous water, reduce corrosion and raising desulfuration efficiency and the byproduct rate of recovery of wet flue gas smoke pipe, flue, blower fan, chimney.
The utility model is finished the technical scheme that its invention task taked:
A kind of dehydrating unit of wet type flue gas desulphurization tail gas has a desulfurizing tower, is disposed with from the bottom to top to rise gas cap, Washing spray nozzle and upper and lower two-stage demister in desulfurizing tower; Described Washing spray nozzle is connected with water tank by the spray pipeline, and the cleaning solution of Washing spray nozzle ejection is communicated with water tank by return duct, constitutes the desulphurization circulating water sprinkler system; The above and below that the upper and lower two-stage deflection plate demister that is arranged on desulfurizing tower top is one-level demister, secondary demister is respectively arranged with one deck flooding nozzle, and every layer of flooding nozzle is by the sprayer flushing line, be connected with water tank in order to the internally piloted valve of control flushing frequency and duration; Described desulfurizing tower is connected with chimney by the smoke pipe at top; Bottom at smoke pipe terminal horizontal pipe is provided with water leg, and described water leg is connected with condensate storage by the flue discharging tube, and the lower end of flue discharging tube is arranged in below the liquid level of condensate storage; Described condensate storage is connected with water tank by condensate pump; Described water tank is provided with automatic control liquid level gauge and the control water compensating valve that is used to control liquid level.
Described smoke pipe is " second " type structure.
The cross section of described water leg is U type, arc or triangular form.
The utility model proposes the dehydrating unit of wet type flue gas desulphurization tail gas, flue gas absorbs with the recirculated water spray behind the employing desulphurization denitration, further removes the SO of escape
2With NH
3, improve desulfurized effect and byproduct NH
4SO
4The rate of recovery; On purifying column top the two-stage demister is set, eliminates the drop of particle diameter more than 5 microns; The demister purging system is set, keeps demister to the reasonable pressure drop of flue gas and reclaim byproduct; Water leg is set and introduces condensate storage with pipeline in the bottom of smoke pipe terminal horizontal pipe, the moisture that interception is condensed in smoke pipe is also recycled; Make flue gas before entering flue, remove aqueous water, avoid aqueous water to flow into boiler induced-draft fan and cause corrosion, to the also significantly reduction of corrosion of flue and chimney; Reduce the corrosion of flue gas after desulfurization, and improve sorbent utilization and desulfurization degree, the two is all reached more than 95% follow-up equipment and buildings or structures.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Among the figure: 1, desulfurizing tower, 2, water-circulating pump, 3, water tank, 4, the spray pipeline, 5,6, one-level demister flushing line, 7,8, secondary demister flushing line, 9, rise gas cap, 10, Washing spray nozzle, 11, the one-level demister, 12, the secondary demister, 13,14, one-level demister nozzle, 15,16, secondary demister nozzle, 17, flue, 18, water leg, 19, condensate storage, 20, condensate pump, 21, air-introduced machine, 22, former flue, 23, the desulfurizing tower inlet flue duct, 24, clean exhaust gases passes, 25, chimney, 26, the flue discharging tube, 27, the condensate pump inlet tube, 28, liquid back pipe, 29, the water-circulating pump inlet tube, 30, the water-circulating pump outlet, 31, return duct, 32, filling pipe, 33, outlet pipe, 34, liquid level gauge, 35, water compensating valve.
The specific embodiment
With embodiment the utility model is further specified in conjunction with the accompanying drawings:
As shown in Figure 1, a kind of dehydrating unit of wet type flue gas desulphurization tail gas has a desulfurizing tower 1, is disposed with from the bottom to top to rise gas cap 9, Washing spray nozzle 10 and upper and lower two-stage demister in desulfurizing tower 1; Described Washing spray nozzle 10 is connected with water tank 3 by spray pipeline 4, and the cleaning solution of Washing spray nozzle ejection is communicated with water tank 3 by return duct 31, constitutes the desulphurization circulating spray system; The water yield of losing in the spray is replenished by the filling pipe 32 that is located on the water tank, and the water yield that desulfurization section need replenish is sent by the outlet pipe 33 that is located on the circulating water line; The upper and lower two-stage demister that is arranged on desulfurizing tower top is that the above and below of one-level demister 11, secondary demister 12 is respectively arranged with one deck flooding nozzle, one-level demister 11, secondary demister 12 are the deflection plate demister, the above and below that is one-level demister 11 is provided with one-level demister nozzle 13,14, secondary demister 12 is provided with secondary demister nozzle 15,16, and one-level demister nozzle 13,14 and secondary demister nozzle 15,16 are connected with water tank 3 by one-level sprayer flushing line 5,6 secondary sprayer flushing lines 7,8 respectively; Distance between described one-level demister 11 and the secondary demister 12 is 1650mm, and the blade pitgh of one-level demister 11 is 25mm, and the blade pitgh of secondary demister 12 is 35mm; Described desulfurizing tower is connected with chimney 25 by the smoke pipe 17 at top; Bottom at smoke pipe terminal horizontal pipe is provided with water leg 18, and the cross section of water leg is the U type, and described water leg 18 is connected with condensate storage 19 by flue discharging tube 26, and the lower end of flue discharging tube 26 is arranged in below the liquid level of condensate storage 19; Described condensate storage is connected with water tank 3 by condensate pump 20, liquid back pipe 28; Described water tank 3 is provided with automatic control liquid level gauge 34 and the control water compensating valve 35 that is used to control liquid level.
From rising the flue gas of desulfurization that gas cap 9 enters the desulfurizing tower washing section, continue to rise with the void tower flow velocity of 3～4 meter per seconds, contact the SO that will escape with flue gas with circulating cleaning solution through Washing spray nozzle 10 sprays
2With NH
3Absorption enters in the cleaning solution, to improve SO as far as possible
2Removal efficiency and desulfurizing agent NH
3Utilization rate makes both all reach more than 95%; Through the wet flue gas after the water washing, SO
2With NH
3Content significantly reduces, but still contains the small particle diameter drop, by one-level demister 11, with secondary 12 demisters particle diameter is removed greater than 5 microns drop, increases the by-product recovery rate, reduces the risk that aqueous water directly enters smoke pipe; Horizontal tube bottom at smoke pipe 17 ends, water leg 18 is set, the water that will condense in smoke pipe is collected in the water leg 18, and by flue discharging tube 26 importing condensate storages 19, then through condensate pump inlet tube 27, condensate pump 20, liquid back pipe 28 is delivered to water tank 3 with condensate liquid and reclaims use.
Claims (3)
1. the dehydrating unit of a wet type flue gas desulphurization tail gas is characterized in that: have a desulfurizing tower (1), be disposed with from the bottom to top in desulfurizing tower and rise gas cap (9), Washing spray nozzle (10) and upper and lower two-stage demister; Described Washing spray nozzle is connected with water tank (3) by spray pipeline (4), and the cleaning solution of Washing spray nozzle ejection is communicated with water tank (3) by return duct (31), constitutes the desulphurization circulating water sprinkler system; The upper and lower two-stage demister that is arranged on desulfurizing tower top is that the above and below of one-level demister (11), secondary demister (12) is respectively arranged with one deck flooding nozzle, and every layer of flooding nozzle is by the sprayer flushing line, be connected with water tank (3) in order to the internally piloted valve of control flushing frequency and duration; Described desulfurizing tower is connected with chimney (25) by the smoke pipe (17) at top; In the bottom of smoke pipe terminal horizontal pipe water leg (18) is set, described water leg (18) is connected with condensate storage (19) by the flue discharging tube, and the lower end of flue discharging tube is positioned at below the liquid level of condensate storage; Described condensate storage (19) is connected with water tank (3) by condensate pump (20); Described water tank is provided with automatic control liquid level gauge and the control water compensating valve that is used to control liquid level.
2. the dehydrating unit of wet type flue gas desulphurization tail gas according to claim 1 is characterized in that: described smoke pipe (17) is " second " type structure.
3. the dehydrating unit of wet type flue gas desulphurization tail gas according to claim 1 is characterized in that: the cross section of described water leg is U type, arc or triangular form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020543336XU CN201811262U (en) | 2010-09-27 | 2010-09-27 | Tail gas dehumidification device for wet-process flue gas purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020543336XU CN201811262U (en) | 2010-09-27 | 2010-09-27 | Tail gas dehumidification device for wet-process flue gas purification |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201811262U true CN201811262U (en) | 2011-04-27 |
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ID=43894202
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201020543336XU Expired - Lifetime CN201811262U (en) | 2010-09-27 | 2010-09-27 | Tail gas dehumidification device for wet-process flue gas purification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201811262U (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956991A (en) * | 2010-09-27 | 2011-01-26 | 洛阳市天誉环保工程有限公司 | Process and device for dehumidifying wet flue gas purification tail gas |
| CN102908800A (en) * | 2012-10-31 | 2013-02-06 | 上海迪夫格环境科技有限公司 | Condensed liquid collection device of wet smoke and fuel gas channel |
| CN104014237A (en) * | 2014-06-20 | 2014-09-03 | 北京中冶隆生环保科技发展有限公司 | Wet flue gas denitration device with turbocharging turbulator and using method of wet flue gas denitration device |
| CN104251494A (en) * | 2014-08-25 | 2014-12-31 | 昊姆（上海）节能科技有限公司 | Boiler smoke processing device and method |
| CN105363341A (en) * | 2015-12-15 | 2016-03-02 | 天津一橙泽恒环保科技发展有限公司 | Flue gas treatment device |
| CN105536450A (en) * | 2015-12-22 | 2016-05-04 | 安徽理工大学 | Fume dehumidification process |
| CN107198952A (en) * | 2017-06-23 | 2017-09-26 | 西安西热锅炉环保工程有限公司 | The recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system |
| CN109173564A (en) * | 2018-11-19 | 2019-01-11 | 福建南方路面机械有限公司 | A kind of bituminous mixing plant exhaust gas treating method |
-
2010
- 2010-09-27 CN CN201020543336XU patent/CN201811262U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956991A (en) * | 2010-09-27 | 2011-01-26 | 洛阳市天誉环保工程有限公司 | Process and device for dehumidifying wet flue gas purification tail gas |
| CN102908800A (en) * | 2012-10-31 | 2013-02-06 | 上海迪夫格环境科技有限公司 | Condensed liquid collection device of wet smoke and fuel gas channel |
| CN104014237A (en) * | 2014-06-20 | 2014-09-03 | 北京中冶隆生环保科技发展有限公司 | Wet flue gas denitration device with turbocharging turbulator and using method of wet flue gas denitration device |
| CN104251494A (en) * | 2014-08-25 | 2014-12-31 | 昊姆（上海）节能科技有限公司 | Boiler smoke processing device and method |
| CN104251494B (en) * | 2014-08-25 | 2017-04-19 | 昊姆（上海）节能科技有限公司 | Boiler smoke processing device and method |
| CN105363341A (en) * | 2015-12-15 | 2016-03-02 | 天津一橙泽恒环保科技发展有限公司 | Flue gas treatment device |
| CN105536450A (en) * | 2015-12-22 | 2016-05-04 | 安徽理工大学 | Fume dehumidification process |
| CN105536450B (en) * | 2015-12-22 | 2017-11-24 | 安徽理工大学 | A kind of flue gas dehumidification process |
| CN107198952A (en) * | 2017-06-23 | 2017-09-26 | 西安西热锅炉环保工程有限公司 | The recycling system of mist eliminator flushing water in coal-burning power plant's wet desulfurization system |
| CN109173564A (en) * | 2018-11-19 | 2019-01-11 | 福建南方路面机械有限公司 | A kind of bituminous mixing plant exhaust gas treating method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110427 Effective date of abandoning: 20131016 |
|
| RGAV | Abandon patent right to avoid regrant |