CN203971653U - A kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower - Google Patents

A kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower Download PDF

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Publication number
CN203971653U
CN203971653U CN201420366378.9U CN201420366378U CN203971653U CN 203971653 U CN203971653 U CN 203971653U CN 201420366378 U CN201420366378 U CN 201420366378U CN 203971653 U CN203971653 U CN 203971653U
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China
Prior art keywords
tower
catch tray
liquid
gas
subparticle
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CN201420366378.9U
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Chinese (zh)
Inventor
周欣
吴文
宋宝华
张会来
董丽彦
唐丽
杜昊临
于健福
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中节能六合天融环保科技有限公司
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Publication of CN203971653U publication Critical patent/CN203971653U/en

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Abstract

A kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower, by tower body, spray equipment, catch tray, Venturi tube, downspout, formed, it is characterized in that, spray equipment is arranged on tower body internal upper part, catch tray is arranged at middle part in tower body, least significant end at catch tray arranges downspout, and downspout causes outside tower and is connected with tower outer circulation case, and the percent opening of the corresponding catch tray of quantity of Venturi tube is arranged on catch tray.Advantage is, realizes single tower double-cycle process cyclic process liquid collection, gas distributes again, utilizes venturi principle, wet dust removal principle simultaneously, promotes subparticle cohesion in flue gas, removes subparticle in flue gas.

Description

A kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower
Technical field
The utility model belongs to gas-liquid reallocation and the subparticle capturing device in the two circulating absorption towers of single tower that lime stone (lime)/gypsum, magnesium oxide method, ammonia/ammonium sulfate method flue gas desulfurization technique use.Be particularly related to a kind of for carrying out gas-liquid reallocation in absorption tower, realize the device that single tower double-cycle process cocycle process liquids is collected, this device or a kind of venturi principle, wet dust removal principle utilized, the device that subparticle in flue gas is condensed to trapping, can effectively reduce exhaust gas dust particulate emission.
Background technology
At present, atmosphere pollutants emission standards increasingly stringent, requirement according to GB13223-2011 to coal steam-electric plant smoke pollutant emission standard, desulfurizing tower exhanst gas outlet S02 discharge standard by 200mg/m3 strictly to 50mg/m3, dust emission standard by 100mg/m3 strictly to 50mg/m3 (area requires 30mg/m3 especially).Adopt conventional sulfur removal technology, for example the sulfur removal technology of lime stone (lime)/gypsum, magnesium oxide method, ammonia/ammonium sulfate method is difficult to stably reaching standard.Present stage, effective process modification was on the basis of original sulfur removal technology, and original absorption tower is improved, and adopted single tower double-cycle process, improved desulfuration efficiency.In absorption tower or after the outlet of absorption tower, set up special purpose device to remove the subparticle in flue gas simultaneously, meet emission request.
Adopt at present the gas-liquid redistribution device using in the absorption tower of single tower double-cycle process, or the existing application of similar device, name differs, and form differs, and respectively has pluses and minuses.
Chinese patent (application number: 201320018834.6) disclose the demist of a kind of semi-canal type ridge and connect liquid fairing.This device adopts the ridge type structure of the two-layer semicanal composition staggering, and can reduce flue gas resistance, be convenient to cleaning, but can not stop the liquid of top spraying layer completely.
Chinese patent (application number: 201210341840.5) disclose after a kind of efficient seizure desulfurization aerocolloidal desulphurization system in clean flue gas.The efficient air colloidal sol catcher of installing between the top of slurries spraying layer, demister bottom in desulfurizing tower is comprised of multilayer shutter.
Chinese patent (application number: 201210287870.2) disclose high-efficient wet-type electric precipitation desulphurization system and technique, in the card of wherein said water accumulating disc, be distributed with projection, convex top has smoke ventilator, and water accumulating disc is communicated with cyclic water tank by the pipe-line system of catchmenting.This kind of water accumulating disc easily causes dust stratification inconvenience in dish to be cleaned.
Chinese patent (application number: 201210258750.X) disclose truncated cone spray district many funnels slurry collecting disc for desulfuration absorbing tower.Spraying layer below is provided with large lower young circular cone suitable for reading, and circular cone has slurry collecting disc body.The same easily dust stratification of this disk body, and the young large percent opening that limits disk body suitable for reading under circular cone.
Chinese patent (application number: 201010210119.3) disclose a kind of boiler flue gas desulfurization device by in-column crystallization ammonia process, tower central authorities arrange one group of gas cap, gas cap cleans shower nozzle, conical flow ring.This assembly has stopped in tower airflow direction from the bottom to top, increases flue gas resistance.
The absorption tower that single tower double-cycle process will be used, gas-liquid redistribution device will reduce flue gas resistance as much as possible guaranteeing that subparticle has the very high efficiency of removing, and can meet the larger excursion of percent opening on cross section in tower,
Summary of the invention
The purpose of this utility model is to design and produce gas-liquid reallocation and subparticle capturing device in a kind of absorption tower that will use for single tower double circulation desulphurization technique, the dissolved oxygen treating apparatus of promotion indissoluble solution particulate matter.A kind ofly realize single tower double-cycle process cyclic process liquid collection, gas distributes again, utilizes venturi principle, wet dust removal principle simultaneously, promotes subparticle cohesion in flue gas, removes the device of subparticle in flue gas.
The technical solution of the utility model is, a kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower, by tower body, spray equipment, catch tray, Venturi tube, downspout, formed, spray equipment is arranged on tower body internal upper part, catch tray is arranged at middle part in tower body, least significant end at catch tray arranges downspout, and downspout causes outside tower and is connected with tower outer circulation case, and the percent opening of the corresponding catch tray of quantity of Venturi tube is arranged on catch tray.
Spray equipment comprises nozzle and shower, nozzle be arranged on Venturi tube and liquid storing tube directly over, remain on 0.5m-2m with the vertical interval of liquid storing tube, position and quantity are corresponding with Venturi tube, each nozzle is connected by shower, and this shower is connected with spray pump and corresponding pipeline outside tower.
Catch tray is up big and down small cone, and the angle of cone bus and horizontal plane is 30 °-45 °, according to the operating mode adapting to, arranges, and the horizontal projected area percent opening of catch tray is 30%-60%.
Downspout is connected with catch tray least significant end, is aided with channel bend, horizontal pipe causes the liquid in catch tray outside tower, and horizontal pipe arranges the gradient of 5 °, prevents deposition of solid in pipeline.
Be arranged in all Venturi tubes on catch tray, consistent size, the short diffusion of its reducer segment length.The aditus laryngis lower end of Venturi tube is connected with catch tray, and the anemostat upper end of Venturi tube connects the liquid storing tube of different length to keep all Venturi tube outlets at same level height.This liquid storing tube exceeds catch tray cone end certain distance, and this distance is 0.5-2 cone height doubly.
When the high ash-laden gas of reply, in order to meet the removal requirement of this device to subparticle, spray equipment under can installing in 0.5m-2m spacing range under Venturi tube.
This device adopts corrosion-resistant material to make, and the aditus laryngis place of Venturi tube adopts the material of anticorrosive anti-wear to make.
The utility model has the advantages that: the trapping applicable to the fine particle of high ash-laden gas purifies, the cohesion by venturi to subparticle, increases subparticle particle diameter, the purification efficiency of spray equipment in raising; When processing the extra high flue gas of fine particle content, lower spray equipment can be strengthened the removal effect of subparticle.Meanwhile, the flexible adjustment of the liquid storing tube pipe range of venturi increaser top can meet the requirement of the different liquid storage amounts of catch tray.In addition, catch tray is with special angle, is conducive to flow of flue gas and is more conducive to liquid in dish the possible deposition of trying to get to the heart of a matter is washed away, and avoids the dust stratification of trying to get to the heart of a matter.The more important thing is the percent opening flexible adjustment of catch tray, can, according to different regulating working conditions flue gas resistances to minimum, guarantee the good result of gas-liquid reallocation simultaneously; Be applicable to gas-liquid reallocation and the subparticle trapping of single tower double circulation desulphurization tower.
Accompanying drawing explanation:
Below in conjunction with drawings and Examples, the utility model is described in further detail.
Fig. 1 is a kind of gas-liquid reallocation of single tower double circulation desulphurization tower and organigram of subparticle capturing device of being applicable to of the present utility model
In figure, 1-1-shower, 1-2-nozzle, 2-catch tray, 3-downspout, 4-tower body, 5-Venturi tube, 5-1-Venturi tube reducer, 5-2-Venturi tube trunnion, 5-3-venturi increaser, 6-liquid storing tube
The specific embodiment:
As seen from Figure 1, a kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower of the utility model, is comprised of catch tray 2, Venturi tube 5, liquid storing tube 6, downspout 3, spray equipment 1, and is arranged in tower 4.
This device be take catch tray 2 as agent structure, and catch tray 2 is placed in the correct position (being determined by technique) in two circulating absorption towers.Downspout 3 and Venturi tube 5 are arranged on catch tray 2, form the liquid collection on catch tray top and are discharged outside tower by downspout, and the gas of catch tray bottom enters catch tray top by Venturi tube water conservancy diversion, realizes gas-liquid reallocation.
Venturi tube 5 is comprised of trunnion 5-1, reducing pipe 5-2 and increaser 5-3.According to the actual condition design arrangement form of Venturi tube 5 on catch tray and the percent opening of catch tray 5.According to the size of percent opening design Venturi tube 5.
Spray equipment 1 is comprised of shower 1-1 and nozzle 1-2, and nozzle 1-2 is directly over Venturi tube 5, and liquid storing tube 6 is connected with the increaser 5-3 of Venturi tube.
Operation principle of the present utility model and using method are:
The flue gas that contains drop and ash content is by absorption tower below this device of upwards flowing through, when flue gas is during by several Venturi tubes, the drop in flue gas and ash content under flow at high speed, subparticle generation cohesion, the increase of ash particles particle diameter.When flue gas flows out Venturi tube, flue gas contacts with the spray liquid directly over Venturi tube.Spray liquid, by nozzle atomization, forms fine drop, further washs ash content.
Spray liquid in absorption tower this device of flowing through from top to bottom, after spray liquid completes the washing of flue gas, falls into catch tray outside downspout is drawn tower.

Claims (6)

1. a gas-liquid that is applicable to single tower double circulation desulphurization tower is reallocated and subparticle capturing device, by tower body, spray equipment, catch tray, Venturi tube, downspout, formed, it is characterized in that, spray equipment is arranged on tower body internal upper part, catch tray is arranged at middle part in tower body, least significant end at catch tray arranges downspout, and downspout causes outside tower and is connected with tower outer circulation case, and the percent opening of the corresponding catch tray of quantity of Venturi tube is arranged on catch tray.
2. a kind of gas-liquid that is applicable to single tower double circulation desulphurization tower as claimed in claim 1 is reallocated and subparticle capturing device, it is characterized in that, spray equipment comprises nozzle and shower, nozzle be arranged on Venturi tube and liquid storing tube directly over, remain on 0.5m-2m with the vertical interval of liquid storing tube, position and quantity are corresponding with Venturi tube, and each nozzle is connected by shower, and this shower is connected with spray pump and corresponding pipeline outside tower.
3. a kind of gas-liquid that is applicable to single tower double circulation desulphurization tower as claimed in claim 1 is reallocated and subparticle capturing device, it is characterized in that, catch tray is up big and down small cone, the angle of cone bus and horizontal plane is 30 °-45 °, according to the operating mode adapting to, arrange, the horizontal projected area percent opening of catch tray is 30%-60%.
4. a kind of gas-liquid that is applicable to single tower double circulation desulphurization tower as claimed in claim 1 is reallocated and subparticle capturing device, it is characterized in that, downspout is connected with catch tray least significant end, be aided with channel bend, horizontal pipe causes the liquid in catch tray outside tower, horizontal pipe arranges the gradient of 5 °, prevents deposition of solid in pipeline.
5. a kind of gas-liquid that is applicable to single tower double circulation desulphurization tower as claimed in claim 1 is reallocated and subparticle capturing device, it is characterized in that, be arranged in all Venturi tubes on catch tray, consistent size, the short diffusion of its reducer segment length, the aditus laryngis lower end of Venturi tube is connected with catch tray, the anemostat upper end of Venturi tube connects the liquid storing tube of different length to keep all Venturi tube outlets at same level height, this liquid storing tube exceeds catch tray cone end certain distance, and this distance is 0.5-2 cone height doubly.
6. a kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower as claimed in claim 1, is characterized in that, when the high ash-laden gas of reply, and spray equipment under installing in 0.5m-2m spacing range under Venturi tube.
CN201420366378.9U 2014-07-04 2014-07-04 A kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower CN203971653U (en)

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Application Number Priority Date Filing Date Title
CN201420366378.9U CN203971653U (en) 2014-07-04 2014-07-04 A kind of gas-liquid reallocation and subparticle capturing device that is applicable to single tower double circulation desulphurization tower

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105013311A (en) * 2015-07-28 2015-11-04 青岛京润石化工程有限公司 Flue gas desulfurization dust and mist removal method
CN106823742A (en) * 2017-02-16 2017-06-13 上海蓝科石化环保科技股份有限公司 A kind of desulfurization and dust-removal method of double circulation desulphurization and dust-removing device and flue gas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105013311A (en) * 2015-07-28 2015-11-04 青岛京润石化工程有限公司 Flue gas desulfurization dust and mist removal method
CN106823742A (en) * 2017-02-16 2017-06-13 上海蓝科石化环保科技股份有限公司 A kind of desulfurization and dust-removal method of double circulation desulphurization and dust-removing device and flue gas

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Effective date of registration: 20200908

Granted publication date: 20141203