CN204522731U - The outer demist wet flue gas desulfurizer of tower - Google Patents

The outer demist wet flue gas desulfurizer of tower Download PDF

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Publication number
CN204522731U
CN204522731U CN201520059528.6U CN201520059528U CN204522731U CN 204522731 U CN204522731 U CN 204522731U CN 201520059528 U CN201520059528 U CN 201520059528U CN 204522731 U CN204522731 U CN 204522731U
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China
Prior art keywords
tower
flue
flue gas
circulation pond
communicated
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CN201520059528.6U
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Chinese (zh)
Inventor
王开力
张羽
赵晓辉
李延庆
马琳琳
王慧红
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Beijing Kechuang Technology Park Limited by Share Ltd
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BEIJING ZHONGKE INNOVATION PARK ENVIRONMENT TECHNOLOGY CO LTD
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Abstract

The utility model discloses the outer demist wet flue gas desulfurizer of a kind of tower, it comprises tower outer circulation pond, desulfurizing tower, flue, chevron mist eliminator, direct dehumidification chimney and collecting tank, tower outer circulation pond is communicated with bottom desulfurizing tower by pipeline, several layers of shower are fixedly mounted with in desulfurizing tower, shower is communicated with tower outer circulation pond by circulating pump, flue is for being horizontally disposed with, flue one end is packed in desulfurizing tower top, chevron mist eliminator is packed in flue, the flue other end is packed in bottom direct dehumidification chimney, collecting tank is packed in stack base, collecting tank is communicated with tower outer circulation pond by excretory duct, the angle of the falling direction of the drop on the flow direction of flue gas and the flap of chevron mist eliminator is 90 °, reduce the possibility being sheared separation and secondary droplets in droplets fall process by flue gas, in droplets fall process, without the need to overcoming flue gas drag, in flue, flue gas brings up to about 6m/s by the flow velocity of chevron mist eliminator, and smoke desulfurization efficiency significantly improves.

Description

The outer demist wet flue gas desulfurizer of tower
Technical field
The utility model relates to desulfurizer, particularly relates to the outer demist wet flue gas desulfurizer of a kind of tower.
Background technology
Wet process of FGD demister, for large and medium-sized desulfurizing tower, chevron mist eliminator is all adopted to carry out demist dewatering operation both at home and abroad, as shown in Figure 1, the angle in flow of flue gas direction in the droplets fall direction of chevron mist eliminator trapping and desulfurizing tower is 180 ° (as shown in Figure 2) to its mounting means, the experience of Long-Time Service shows, chevron mist eliminator is arranged in desulfurizing tower in the manner described above, there is following shortcoming: the angle in the droplets fall direction trapped due to flow of flue gas direction and flap is 180, therefore, the drop that flap traps is before whereabouts, first the drag of flue gas must be overcome, the time of staying of drop on flap is longer, due to the restriction of above-mentioned condition, make flue gas lower by the speed of chevron mist eliminator, can only at 2.4 ~ 3.6m/s, once flue gas Negotiation speed is too high, smoke secondary band water will be caused, reduce dewatering efficiency, produce " gypsum rain " phenomenon serious, increase chevron mist eliminator blocking, the danger that fouling and drop are carried by smoke secondary, this is flap one of vertically arranged deficiency in tower of chevron mist eliminator, another one weak point is, once chevron mist eliminator blocking, fouling, cleaning in tower after distortion, maintenance are all very difficult, therefore, develop that a kind of desulfurizing tower internal structure is simple, desulfurizing tower volume is little, low energy, reduced investment, the outer demist wet flue gas desulfurizer of tower easy to maintenance, be one of important topic faced in industry.
Utility model content
The purpose of this utility model is to provide the outer demist wet flue gas desulfurizer of a kind of tower, in order to solve the defect of above-mentioned prior art.
In order to achieve the above object, technical scheme provided by the utility model is: the outer demist wet flue gas desulfurizer of a kind of tower, it comprises tower outer circulation pond, desulfurizing tower, flue, chevron mist eliminator, direct dehumidification chimney and collecting tank, described tower outer circulation pond is communicated with bottom desulfurizing tower by pipeline, several layers of shower are fixedly mounted with in described desulfurizing tower, described shower is communicated with tower outer circulation pond by circulating pump, described flue is for being horizontally disposed with, flue one end is packed in desulfurizing tower top, described chevron mist eliminator is packed in flue, the flue other end is packed in bottom described direct dehumidification chimney, described collecting tank is packed in stack base, collecting tank is communicated with tower outer circulation pond by excretory duct.
Further, in the liquid pool of described tower outer pond, agitating device is installed.
Further, spiral dewatering device is fixedly mounted with in described direct dehumidification chimney.
Further, it also comprises desulfurizing byproduct retracting device, and described desulfurizing byproduct retracting device is communicated with bottom tower outer circulation pond by excavationg pump.
Further, it also comprises air blast, and described air blast is communicated with top, tower outer circulation pond by pipeline.
Further, it also comprises pulping tank, and described pulping tank is communicated with top, tower outer circulation pond by slurry supply pump.
Adopt technique scheme, technique effect of the present utility model has: flue of the present utility model is for being horizontally disposed with, the angle of the falling direction of the drop on the flow direction of the flue gas in flue and the flap of chevron mist eliminator is 90 °, decrease drop is sheared separation and secondary droplets in dropping process possibility by flue gas, in droplets fall process, without the need to overcoming the drag of flue gas, reduce the time of staying of drop on the flap of chevron mist eliminator, reduce the blocking of flap, the danger that fouling and drop are carried by smoke secondary, therefore, in flue, flue gas brings up to about 6m/s by the flow velocity of chevron mist eliminator, smoke desulfurization efficiency significantly improves.
Accompanying drawing explanation
Fig. 1 is the structural representation of existing desulfurizing tower;
Fig. 2 is the chevron mist eliminator A-A sectional view of Fig. 1;
Fig. 3 is structural representation of the present utility model;
Fig. 4 is the chevron mist eliminator B-B sectional view of Fig. 3;
Fig. 5 is example structure schematic diagram of the present utility model;
Wherein: 1, tower outer circulation pond 2, desulfurizing tower 3, flue 4, chevron mist eliminator 5, direct dehumidification chimney 6, collecting tank 7, pipeline 8, circulating pump 9, excretory duct 10, spiral dewatering device 11, desulfurizing byproduct retracting device 12, excavationg pump 13, air blast 14, pulping tank 15, slurry supply pump 21, shower 22, smoke inlet 23, agitating device 41, flap.
Detailed description of the invention
Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described.
As shown in Figure 3, structural representation of the present utility model, it comprises tower outer circulation pond 1, desulfurizing tower 2, flue 3, chevron mist eliminator 4, direct dehumidification chimney 5 and collecting tank 6, tower outer circulation pond 1 is communicated with bottom desulfurizing tower 2 by pipeline 7, several layers of shower 21 are fixedly mounted with in desulfurizing tower 2, shower 21 is communicated with tower outer circulation pond 1 by circulating pump 8, flue 3 is for being horizontally disposed with, flue 3 one end is packed in desulfurizing tower 2 top, chevron mist eliminator 4 is packed in flue 3, flue 3 other end is packed in bottom direct dehumidification chimney 5, collecting tank 6 is packed in bottom flue 3, collecting tank 6 is communicated with tower outer circulation pond 1 by excretory duct 9.
As shown in Figure 4, the B-B sectional view of chevron mist eliminator, the falling direction of drop in the flue gas that flap 41 traps and the angle in flow of flue gas direction are 90 °, decrease drop is sheared separation and secondary droplets in dropping process possibility by flue gas, in the droplets fall process of trapping, without the need to overcoming the drag of flue gas, reduce the time of staying of drop on the flap 41 of chevron mist eliminator, reduce the blocking of flap 41, the danger that fouling and drop are carried by smoke secondary, therefore, in flue, flue gas can bring up to about 6m/s by the flow velocity of chevron mist eliminator, desulfuration efficiency significantly improves.
As shown in Figure 5, example structure schematic diagram of the present utility model, installs agitating device 23 in tower outer circulation pond 1; Spiral dewatering device 10 is fixedly mounted with in direct dehumidification chimney 5; It also comprises desulfurizing byproduct retracting device 11, and desulfurizing byproduct retracting device 11 is communicated with bottom tower outer circulation pond 1 by excavationg pump 12; It also comprises air blast 13, air blast 13 is communicated with top, tower outer circulation pond 1 by pipeline 7, to the desulfurization absorbing liquid conveying air in tower outer circulation pond 1, agitating device 23 has following 2 effects: one: strengthen absorbing liquid sulfite calcium and oxygen in tower outer circulation pond 1 and interact, reactive chemistry equation is CaSO 3+ 1/2 O 2+ 2H 2o → CaSO 42H 2o; Its two: the slurries of in tower outer circulation pond 1 are mixed, reduce sedimentary sinking speed; It also comprises pulping tank 14, and pulping tank 14 is communicated with top, tower outer circulation pond 1 by slurry supply pump 15; Tower outer circulation pond 1 of the present utility model and agitating device 23 according to different process scheme, can adopt arrangement or tower outer circulation arrangement in tower.
Operation principle of the present utility model is: the desulfurizer slurry that pulping tank 14 is made enters tower outer circulation pond 1 through slurry supply pump 15, flue gas enters desulfurizing tower 2 by the smoke inlet 22 on desulfurizing tower 2 sidewall, desulfurizer slurry in tower outer circulation pond 1 enters shower 21 through circulating pump 8, the desulfurization slurry that shower 21 ejects and flue gas fully contact formation absorbing liquid, absorbing liquid drops down onto bottom desulfurizing tower 2, tower outer circulation pond 1 is flowed into through pipeline 7 bottom desulfurizing tower 2, flue gas enters horizontally disposed flue 3, chevron mist eliminator 4 effect in flue 3 is the moisture in purifying smoke, water content after making purification in flue gas is less than 75mg/Nm 3, droplets fall on the flap 41 of chevron mist eliminator 4 is collected in collecting tank 6, tower outer circulation pond 1 is flowed into by excretory duct 9, flue gas enters direct dehumidification chimney 5, the effect of direct dehumidification chimney 5 allows the flue gas after purifying directly be disposed in air, do not corrode former chimney, spiral dewatering device 10 is fixedly mounted with in direct dehumidification chimney 5, spiral dewatering device 10 removes the flue gas after purification further, absorbing liquid in agitating device 23 pairs of tower outer circulation ponds 1 of installing in tower outer circulation pond 1 stirs, air blast 13 carries air by pipeline 7 in tower outer circulation pond 1, oxygen in tower outer circulation pond 1 in absorbing liquid sulfite calcium and air interacts and generates desulfurizing byproduct, desulfurizing byproduct is CaSO 42H 2o, desulfurizing byproduct enters desulfurizing byproduct retracting device 11 through excavationg pump 12, desulfurizing byproduct recovery fills 11 pairs of desulfurizing byproducts and reclaims, desulfurizing byproduct in desulfurizing byproduct retracting device 11 can be processed into corresponding byproduct, remove the absorbing liquid of desulfurizing byproduct, reenter shower 21 through circulating pump 8, form circulated sprinkling.
Flue of the present utility model is for being horizontally disposed with, the angle of the falling direction of the drop on the flow direction of the flue gas in flue and the flap of chevron mist eliminator is 90 °, decrease drop is sheared separation and secondary droplets in dropping process possibility by flue gas, in droplets fall process, without the need to overcoming the drag of flue gas, reduce the time of staying of drop on the flap of chevron mist eliminator, reduce the blocking of flap, the danger that fouling and drop are carried by smoke secondary, therefore, in flue, flue gas can reach about 6m/s by the flow velocity of chevron mist eliminator, smoke desulfurization efficiency significantly improves.
Finally it should be noted that, above embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical solution of the utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in the middle of right of the present utility model.

Claims (6)

1. the outer demist wet flue gas desulfurizer of tower, it is characterized in that: it comprises tower outer circulation pond (1), desulfurizing tower (2), flue (3), chevron mist eliminator (4), direct dehumidification chimney (5) and collecting tank (6), described tower outer circulation pond (1) is communicated with desulfurizing tower (2) bottom by pipeline (7), several layers of shower (21) are fixedly mounted with in described desulfurizing tower (2), described shower (21) is communicated with tower outer circulation pond (1) by circulating pump (8), described flue (3) is for being horizontally disposed with, flue (3) one end is packed in desulfurizing tower (2) top, described chevron mist eliminator (4) is packed in flue (3), described direct dehumidification chimney (5) bottom is packed in flue (3) other end, described collecting tank (6) is packed in flue (3) bottom, collecting tank (6) is communicated with tower outer circulation pond (1) by excretory duct (9).
2. the outer demist wet flue gas desulfurizer of tower according to claim 1, is characterized in that: install agitating device (23) in described tower outer circulation pond (1).
3. the outer demist wet flue gas desulfurizer of tower according to claim 1, is characterized in that: be fixedly mounted with spiral dewatering device (10) in described direct dehumidification chimney (5).
4. the outer demist wet flue gas desulfurizer of tower according to claim 1 and 2, it is characterized in that: it also comprises desulfurizing byproduct retracting device (11), described desulfurizing byproduct retracting device (11) is communicated with bottom, tower outer circulation pond (1) by excavationg pump (12).
5. the outer demist wet flue gas desulfurizer of tower according to claim 4, it is characterized in that: it also comprises air blast (13), described air blast (13) is communicated with tower outer circulation pond (1) top by pipeline (7).
6. the outer demist wet flue gas desulfurizer of tower according to claim 5, it is characterized in that: it also comprises pulping tank (14), described pulping tank (14) is communicated with tower outer circulation pond (1) top by slurry supply pump (15).
CN201520059528.6U 2015-01-28 2015-01-28 The outer demist wet flue gas desulfurizer of tower Active CN204522731U (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106731549A (en) * 2016-12-30 2017-05-31 东南大学 A kind of effective wet method fume desulfurizing system for eliminating gypsum rain

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106731549A (en) * 2016-12-30 2017-05-31 东南大学 A kind of effective wet method fume desulfurizing system for eliminating gypsum rain

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Address after: 100195 Beijing city Haidian District minzhuang Road No. 3 Building No. 11 Room 102 West Yuquan Huigu

Patentee after: Beijing Kechuang Technology Park Limited by Share Ltd

Address before: 100195 Beijing city Haidian District minzhuang Road No. 3 Building No. 11 Room 102 West Yuquan Huigu

Patentee before: Beijing Zhongke Innovation Park Environment Technology Co.,Ltd.

CP01 Change in the name or title of a patent holder