CN203227404U - Novel sectional type cross flow smoke purifying and absorbing tower - Google Patents

Novel sectional type cross flow smoke purifying and absorbing tower Download PDF

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Publication number
CN203227404U
CN203227404U CN2013202058722U CN201320205872U CN203227404U CN 203227404 U CN203227404 U CN 203227404U CN 2013202058722 U CN2013202058722 U CN 2013202058722U CN 201320205872 U CN201320205872 U CN 201320205872U CN 203227404 U CN203227404 U CN 203227404U
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China
Prior art keywords
flue gas
activated coke
coke bed
smoke
adsorption tower
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Withdrawn - After Issue
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CN2013202058722U
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Chinese (zh)
Inventor
雷鸣
李阳
王祖林
余福胜
何仰朋
丹慧杰
牛拥军
何育东
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Xian Thermal Power Research Institute Co Ltd
Xian Xire Boiler Environmental Protection Engineering Co Ltd
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Xian Thermal Power Research Institute Co Ltd
Xian Xire Boiler Environmental Protection Engineering Co Ltd
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Priority to CN2013202058722U priority Critical patent/CN203227404U/en
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Abstract

The utility model discloses a novel sectional type cross flow smoke purifying and absorbing tower, sequentially comprising a feeding hopper, a distributor, an active coke bed layer and a discharging hopper which are communicated from top to bottom, wherein a middle smoke collecting chamber is arranged inside the active coke bed layer, the outer part of the active coke bed layer is divided into an upper pure smoke collecting chamber and a lower original smoke distributing chamber by a dual-layer annular dividing plate, an outlet flue is arranged at the upper part of the pure smoke collecting chamber, an original smoke inlet flue communicated with the original smoke distributing chamber is arranged at the lower part of the original smoke distributing chamber, and cross sections of the active coke bed layer, the original smoke distributing chamber, the pure smoke collecting chamber and the whole tower body are all of a ring structure. By adopting the novel sectional type cross flow smoke purifying and absorbing tower disclosed by the utility model, the removal efficiency of pollutants in smoke is high, the removal efficiency of SO2 is more than 96 percent, the removal efficiency of SO3, HCl and HF is more than 98 percent, the removal rate of heavy metal Hg is more than 90 percent, and the dust removal efficiency is more than 80 percent; meanwhile, the novel sectional type cross flow smoke purifying and absorbing tower has the advantages of convenience and uniformity in feeding, smoothness in discharging, high utilization rate of active coke, and easy realization of large scale production, and the like.

Description

A kind of novel segmented cross-flow gas cleaning adsorption tower
Technical field
It is the activated coke dry method adsorption tower that boiler of power plant, metallurgy, waste incineration and chemical industry waste gas carry out desulfurization that the utility model relates to a kind of, is specifically related to a kind of novel segmented cross-flow gas cleaning adsorption tower.
Background technology
In coal fired power plant flue gas desulfurization field, it is present that what adopt more than 90% all is lime stone-gypsum wet flue gas desulfurizing technology, though this technology technology maturation, be widely used, but its shortcoming also displays gradually in application process: 1) the water consumption is high: for the flue gas in power station boiler desulfurizer of not establishing flue gas heat exchange device GGH, amount to the water consumption of every gigawatt unit up to 220~250m 3/ h; 2) chimney anticorrosion and " gypsum rain " problem: the outlet flue gas of wet desulphurization device is saturated wet flue gas, must carry out high-grade anticorrosionly to chimney, chimney " gypsum rain " problem also may occur, and surrounding enviroment are caused secondary pollution; 3) clean flue gas drop carries problem: the drop that carries in the clean flue gas is the gypsum slurries of 20% left and right sides concentration, wherein contains certain solid particle, enters and is dust pollution in the atmosphere; 4) a large amount of exploitations of lime stone and gypsum are piled up problem: owing to extensively adopt lime stone-gypsum wet flue gas desulfurizing technology, cause the large quantities of lime tor to be exploited, also cause the desulfurated plaster of some areas to pile up.
According to China coal electricity development plan, will focus the consruction on big moulded coal electricity base future, China rich coal area mainly is positioned at the north, also water-deficient area just.Activated coke dry method flue gas purifying technique water consumption is little, and than conventional wet desulfurization water saving more than 90%, and adsorbent activity Jiao produces by coal, but accessory substance is concentrated sulfuric acid recycling, can not cause the exploitation of large quantities of lime stone and gypsum accumulation problem.In addition, in the environmental protection key area, environmental carrying capacity is little, the environmental protection standard strictness, and the activated coke flue gas purifying technique can be to SO 2, SO 3, NOx, HCl, HF, Hg, fine solid particle etc. carry out the while and efficiently remove, and do not have problems such as " the gypsum rain " of conventional wet desulfurization, clean flue gas drop carry, and can satisfy very strict environmental protection standard, are applicable to the gas cleaning of environmentally sensitive area.
In addition, for the purified treatment of steel sintering flue gas, flue gas of refuse burning, activated coke can be adsorbed wherein De bioxin pollutant simultaneously, and traditional wet desulfurizing process can't effectively remove by the Dui bioxin.Therefore, activated coke is applicable to the multi-pollutant removing in sinter fume and the flue gas of refuse burning and deep purifying.
Adsorption tower is the nucleus equipment of activated coke desulfurization technology, but this technology just has been in the starting stage in the application of China, and especially the China that is applied in of power plant's scale does not still have achievement, so China needs the novel adsorption tower structure that exploitation has independent intellectual property right badly.
The utility model content
In order to solve the problem that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of novel segmented cross-flow gas cleaning adsorption tower, has pollutant removing efficient height, SR is little, activated coke utilization rate height, internal circulating load is little, breakage rate is low, cloth is even, the characteristics that the smooth and easy device of discharging is stable.
For reaching above purpose, the utility model adopts following technical scheme:
A kind of novel segmented cross-flow gas cleaning adsorption tower, comprise feed hopper 1, feed hopper 1 bottom arranges distributing device 2, distributing device 2 bottoms are provided with cross section and are the activated coke bed 9 of annular, activated coke bed 9 inside are middle flue gas collection chamber 6, the outside is divided into the clean flue gas collection chamber 4 on top and the former flue gas cloth air chamber 10 of bottom by double-deck toroidal membrane 8, be communicated with by middle flue gas collection chamber grid 7 between described activated coke bed 9 and middle flue gas collection chamber (6), 4 of activated coke bed 9 and clean flue gas collection chambers are communicated with by clean flue gas gas collection grid 5,10 of activated coke bed 9 and former flue gas cloth air chambers are communicated with by former flue gas air inlet grid 11, described clean flue gas collection chamber 4 tops are provided with the exhaust pass 3 with its connection, described former flue gas cloth air chamber 10 bottoms are provided with the former smoke inlet flue 12 with its connection, described activated coke bed 9 bottoms are provided with dump skip 14, dump skip 14 bottoms are provided with discharge valve 15, flue gas collection chamber 6 bottoms are provided with ash bucket 16 in the middle of described, and ash bucket 16 bottoms are provided with unloading valve 17; The cross section of described activated coke bed 9, former flue gas cloth air chamber 10, clean flue gas collection chamber 4 and whole tower body is annular.
Described distributing device 2 be shaped as cone.
The element of cone of described cone and the angle α between the horizontal plane are greater than 40 °.
Distance between described double-deck toroidal membrane 8 is two-layer is greater than 2 times of activated coke bed 9 average thickness.
The average thickness D of described activated coke bed 9 is 0.8~2.5m.
The center line of described dump skip 14 is arranged in the outside of activated coke bed 9 center lines.
Be provided with 1~5 deflector 13 in the described dump skip 14, described deflector 13 increases successively with the horizontal sextant angle from-inner-to-outer.
Described dump skip 14 adopts subregion to arrange that number of partitions is 1,2,3,4,6,9,12.
The utility model is compared with prior art, has following advantage:
1, the utility model adsorption tower integral body is annular, compares with square tower, has simple in structurely, saves material, is easy to maximize, and the discharging smoothness is not prone to the dead point, and can avoid stress to concentrate.Simultaneously, because whole tower body is annular, inside arranges the cone-shaped cloth device, and top single-point feed just can be realized the even feeding of whole system, has reduced the requirement to induction system.
2, the utility model adsorption tower is divided into two sections by double-deck hoop dividing plate, activated coke relies on gravity to flow from top to bottom, saturation degree higher activated coke in bottom at first contacts with former flue gas, the activated coke saturation degree is further increased, the flue gas of partial desulfurization contacts with the fresh activated coke in top through middle flue gas collection chamber again, thereby guarantees higher desulfuration efficiency.Compare existing single hop cross-flow technology, the utility model outlet activated coke saturation degree height, whole absorption Sulfur capacity is big, the desulfuration efficiency height, thus activated coke loadings and internal circulating load reduce, and the adsorption tower volume reduces, and the breakage rate reduction is built and operating cost reduces.
3, the utility model adsorption tower is divided into two sections by double-deck hoop dividing plate, the high SO of upper semisection 2The concentration flue gas at first contacts with the inboard activated coke of bed, makes inboard activated coke saturation degree be higher than outside activated coke, after activated coke enters lower semisection, and high concentration SO 2Flue gas at first contacts with bed outside activated coke, makes outlet activated coke saturation degree be tending towards even.
4, the utility model dump skip arranges that by the activated coke layer outside inside arranges deflector simultaneously, thereby guarantees activated coke layer outside activated coke translational speed greater than inboard activated coke translational speed, and outlet activated coke average staturation increases.
Description of drawings
Fig. 1 is the utility model adsorption tower front view.
Fig. 2 is the utility model adsorption tower vertical view.
Fig. 3 is the schematic diagram at distributing device inclination angle.
The specific embodiment
Below in conjunction with drawings and the specific embodiments, the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of novel segmented cross-flow gas cleaning adsorption tower of the utility model, comprise feed hopper 1, feed hopper 1 bottom arranges distributing device 2, distributing device 2 bottoms are provided with cross section and are the activated coke bed 9 of annular, activated coke bed 9 inside are middle flue gas collection chamber 6, the outside is divided into the clean flue gas collection chamber 4 on top and the former flue gas cloth air chamber 10 of bottom by double-deck toroidal membrane 8, be communicated with by middle flue gas collection chamber grid 7 between described activated coke bed 9 and middle flue gas collection chamber (6), 4 of activated coke bed 9 and clean flue gas collection chambers are communicated with by clean flue gas gas collection grid 5,10 of activated coke bed 9 and former flue gas cloth air chambers are communicated with by former flue gas air inlet grid 11, described clean flue gas collection chamber 4 tops are provided with the exhaust pass 3 with its connection, described former flue gas cloth air chamber 10 bottoms are provided with the former smoke inlet flue 12 with its connection, described activated coke bed 9 bottoms are provided with dump skip 14, dump skip 14 bottoms are provided with discharge valve 15, flue gas collection chamber 6 bottoms are provided with ash bucket 16 in the middle of described, and ash bucket 16 bottoms are provided with unloading valve 17; The cross section of described activated coke bed 9, former flue gas cloth air chamber 10, clean flue gas collection chamber 4 and whole tower body is annular.
As preferred embodiment of the present utility model, the distance between described double-deck toroidal membrane 8 is two-layer is greater than 2 times of activated coke bed 9 average thickness.
As preferred embodiment of the present utility model, the average thickness D of described activated coke bed 9 is 0.8~2.5m.
As preferred embodiment of the present utility model, the center line of described dump skip 14 is arranged in the outside of activated coke bed 9 center lines.
As preferred embodiment of the present utility model, be provided with 1~5 deflector 13 in the described dump skip 14, described deflector 13 increases successively with the horizontal sextant angle from-inner-to-outer.
As preferred embodiment of the present utility model, described dump skip 14 adopts subregion to arrange that number of partitions is 1,2,3,4,6,9,12.
As shown in Figure 3, as preferred embodiment of the present utility model, described distributing device 2 be shaped as cone, the element of cone of described cone and the angle α between the horizontal plane are greater than 40 °.
Operation principle of the present utility model is: activated coke is fed by feed hopper 1, by cone-shaped cloth device 2 activated coke is evenly distributed in bed, boiler smoke enters adsorption tower from former smoke inlet flue 12, air velocity descends, because bed resistance is bigger, air-flow evenly distributes on former flue gas cloth air chamber 10 circumferencial directions, passing lower semisection activated coke layer at first contacts with half saturated activated coke, make the outlet activated coke reach higher saturation degree, after the flue gas of process partial desulfurization enters middle flue gas collection chamber 6, air-flow is up, vertically passing upper semisection activated coke bed 9 contacts with the fresh activated coke of upper semisection again, collect through clean flue gas collection chamber 4, flow out adsorption tower from exhaust pass 3.Activated coke relies on gravity to descend, and a plurality of discharge valves of along the circumferential direction arranging by the bottom flow out adsorption tower.
As depicted in figs. 1 and 2, the whole housing structure of the utility model adopts cylindric, inside arranges the cone-shaped cloth device, the bottom arranges a plurality of dump skips along the circumferential direction is set, guaranteed that so not only discharging is smooth and easy, the stagnant area do not occurred, and just can realize even feeding by single-point, need not arrange major axis roller-type discharging device, reduce the requirement to induction system.
As shown in Figure 1, the utility model is by arranging double-deck hoop dividing plate in outer annulus, and the distance between two-layer dividing plate is slightly larger than the twice of activated coke thickness of bed layer, thereby rationalization's flue gas flow direction is realized segmentation, and former flue gas enters from the adsorption tower bottom, high concentration SO 2Gas at first contacts with half saturated activated coke, makes the outlet activated coke reach higher saturation degree, and is up through the flue gas of partial desulfurization, contacts with the fresh activated coke of upper semisection, thereby reach higher desulfuration efficiency.The time of staying of activated coke in tower and absorption Sulfur capacity increase considerably like this, have reduced loadings and the internal circulating load of activated coke, and system's investment and operating cost are all increased substantially.Adopt the utility model adsorption tower, pollutant removing efficient height in the flue gas, SO 2Removal efficiency is greater than 96%, SO 3, HCl, HF removal efficiency greater than 98%, the removal efficiency of heavy metal Hg is greater than 90%, efficiency of dust collection is greater than 80%.

Claims (8)

1. novel segmented cross-flow gas cleaning adsorption tower, comprise feed hopper (1), it is characterized in that: feed hopper (1) bottom arranges distributing device (2), distributing device (2) bottom is provided with cross section and is the activated coke bed (9) of annular, activated coke bed (9) inside is middle flue gas collection chamber (6), the outside is divided into the clean flue gas collection chamber (4) on top and the former flue gas cloth air chamber (10) of bottom by double-deck toroidal membrane (8), be communicated with by middle flue gas collection chamber grid (7) between described activated coke bed (9) and middle flue gas collection chamber (6), be communicated with by clean flue gas gas collection grid (5) between activated coke bed (9) and clean flue gas collection chamber (4), be communicated with by former flue gas air inlet grid (11) between activated coke bed (9) and former flue gas cloth air chamber (10), described clean flue gas collection chamber (4) top is provided with the exhaust pass (3) with its connection, described former flue gas cloth air chamber (10) bottom is provided with the former smoke inlet flue (12) with its connection, described activated coke bed (9) bottom is provided with dump skip (14), dump skip (14) bottom is provided with discharge valve (15), flue gas collection chamber (6) bottom is provided with ash bucket (16) in the middle of described, and ash bucket (16) bottom is provided with unloading valve (17); The cross section of described activated coke bed (9), former flue gas cloth air chamber (10), clean flue gas collection chamber (4) and whole tower body is annular.
2. a kind of novel segmented cross-flow gas cleaning adsorption tower according to claim 1 is characterized in that: described distributing device (2) be shaped as cone.
3. a kind of novel segmented cross-flow gas cleaning adsorption tower according to claim 2, it is characterized in that: the element of cone of described cone and the angle α between the horizontal plane are greater than 40 °.
4. a kind of novel segmented cross-flow gas cleaning adsorption tower according to claim 1, it is characterized in that: the distance between described double-deck toroidal membrane (8) is two-layer is greater than 2 times of activated coke bed (9) average thickness.
5. a kind of novel segmented cross-flow gas cleaning adsorption tower according to claim 4, it is characterized in that: the average thickness D of described activated coke bed (9) is 0.8~2.5m.
6. a kind of novel segmented cross-flow gas cleaning adsorption tower according to claim 1, it is characterized in that: the center line of described dump skip (14) is arranged in the outside of activated coke bed (9) center line.
7. a kind of novel segmented cross-flow gas cleaning adsorption tower according to claim 1 is characterized in that: be provided with 1~5 deflector (13) in the described dump skip (14), described deflector (13) increases successively with the horizontal sextant angle from-inner-to-outer.
8. a kind of novel segmented cross-flow gas cleaning adsorption tower according to claim 1 is characterized in that: described dump skip (14) adopts subregion to arrange that number of partitions is 1,2,3,4,6,9,12.
CN2013202058722U 2013-04-22 2013-04-22 Novel sectional type cross flow smoke purifying and absorbing tower Withdrawn - After Issue CN203227404U (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103230723A (en) * 2013-04-22 2013-08-07 西安热工研究院有限公司 Annular sectional cross-flow fume cleaning adsorption tower
CN108217606A (en) * 2017-12-29 2018-06-29 山东大学 Utilize the cross-flow moving bed device of carbon-based material reduction and desulfurization resolution gas Recovered sulphur
CN110898608A (en) * 2018-09-18 2020-03-24 中国石化工程建设有限公司 System and method for adsorbing and purifying flue gas by using active coke
CN111298593A (en) * 2018-12-12 2020-06-19 中国石化工程建设有限公司 Active coke adsorption tower and method for adsorbing and purifying flue gas by using active coke

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103230723A (en) * 2013-04-22 2013-08-07 西安热工研究院有限公司 Annular sectional cross-flow fume cleaning adsorption tower
CN108217606A (en) * 2017-12-29 2018-06-29 山东大学 Utilize the cross-flow moving bed device of carbon-based material reduction and desulfurization resolution gas Recovered sulphur
CN110898608A (en) * 2018-09-18 2020-03-24 中国石化工程建设有限公司 System and method for adsorbing and purifying flue gas by using active coke
CN110898608B (en) * 2018-09-18 2022-02-08 中国石化工程建设有限公司 System and method for adsorbing and purifying flue gas by using active coke
CN111298593A (en) * 2018-12-12 2020-06-19 中国石化工程建设有限公司 Active coke adsorption tower and method for adsorbing and purifying flue gas by using active coke
CN111298593B (en) * 2018-12-12 2022-03-29 中国石化工程建设有限公司 Active coke adsorption tower and method for adsorbing and purifying flue gas by using active coke

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Granted publication date: 20131009

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