CN202438258U - Dual-ring high-efficiency desulfurization absorbing tower and desulfurization system using same - Google Patents

Dual-ring high-efficiency desulfurization absorbing tower and desulfurization system using same Download PDF

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Publication number
CN202438258U
CN202438258U CN2012200603471U CN201220060347U CN202438258U CN 202438258 U CN202438258 U CN 202438258U CN 2012200603471 U CN2012200603471 U CN 2012200603471U CN 201220060347 U CN201220060347 U CN 201220060347U CN 202438258 U CN202438258 U CN 202438258U
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China
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desulfurization
tower
efficiency
spraying layer
dicyclo
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CN2012200603471U
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杨斌懿
唐小健
王强
崔社
张思锐
熊志成
王锡强
刘宇
毛霖
聂静
丁开平
张曦和
吴涛
袁亮
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CPI Yuanda Environmental Protection Engineering Co Ltd
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CPI Yuanda Environmental Protection Engineering Co Ltd
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Abstract

The utility model discloses a dual-ring high-efficiency desulfurization absorbing tower and a desulfurization system using the same. The dual-ring high-efficiency desulfurization absorbing tower disclosed by the utility model comprises an outer desulfurization tower and an inner desulfurization tower; a smoke outlet is formed at the upper part of the outer desulfurization tower; spray layers are arranged at the middle part of the outer desulfurization tower; a slurry pool is arranged at the lower part of the outer desulfurization tower; a smoke inlet is formed at the upper part of the inner desulfurization tower; spray layers are arranged at the middle part of the inner desulfurization tower; the inner desulfurization tower is sleeved inside the outer desulfurization tower; and the bottom of the inner desulfurization tower is located below the spray layer of the outer desulfurization tower and communicated with the outer desulfurization tower. The desulfurization system disclosed by the utility model, comprises a slurry circulating pump, an oxidation air pipe, an oxidation fan, a slurry draining pump and the dual-ring high-efficiency desulfurization absorbing tower. According to the utility model, the outer desulfurization tower and the inner desulfurization tower with different diameters are sleeved together to be connected in series, therefore, the desulfurization efficiency is greatly improved, and the construction and operation costs are reduced.

Description

Dicyclo high-efficiency desulfurization absorption tower and use the desulphurization system of this tower
Technical field
The utility model belongs to the flue gases purification field, is specifically related to a kind of dicyclo high-efficiency desulfurization absorption tower and uses the desulphurization system of this tower.
Background technology
Coal fired power generation is one of main path of coal utilization, and coal-fired fired power generating unit need be discharged a large amount of pollutants, wherein SO 2And dust is comparatively serious to the harm of environment, also is the major pollutants that need emphasis control.Thereby, need desulphurization system be set at the fume emission place of coal fired power generation.Flue gas desulfurization technique comprises wet desulphurization and dry desulfurization etc., and wherein the utilization of wet desulphurization technology is the most extensive.The principle of wet flue gas desulfurization absorption tower is to utilize the lime stone alkaline slurry to spray from the top down, and flue gas flows from bottom to top, and lime stone slurry drops in the SO that absorbs in the dropping process in the flue gas 2, generate byproducts such as gypsum, reach the SO that removes in the flue gas 2Purpose.
In wet desulfurizing process, the requirement of discharging has more and more stricter trend, because China is vast in territory, very high such as the coal sulfur content of southwest, this all requires desulfuration absorbing tower that very high desulfurization rate is arranged simultaneously; And present domestic or external being provided with of technological spraying layer of spray column at most all has only 6 layers, if increase spraying layer again, improves the uptake zone; Though the dissolving of sulfur dioxide can be strengthened; But the dissolving of lime stone does not catch up with, and cost and power consumption increase a lot, and the effect of desulfurization but improves not obvious; For reaching high desulfurization degree, the series connection of two single towers of circular tower has appearred, the perhaps U-shaped tower of squarer, still, the series connection of two single towers is taken up an area of and system very complex, simultaneously because the slurries pond separately, is difficult to accomplish the balance of the water and the material of single tower and whole system.
Summary of the invention
In view of this, the utility model provides a kind of dicyclo high-efficiency desulfurization absorption tower and has used the desulphurization system of this tower, can reach very high desulfuration efficiency, makes system simplification again, reduces cost and operating cost.
The utility model discloses a kind of dicyclo high-efficiency desulfurization absorption tower, comprise tower in outer tower of desulfurization and the desulfurization, said desulfurization Wai Ta top is provided with exhanst gas outlet; The outer tower of desulfurization is provided with spraying layer in the middle part; Desulfurization Wai Ta bottom is the slurries pond, and said desulfurization Nei Ta top is provided with smoke inlet, is provided with spraying layer in the tower middle part in the desulfurization; Said desulfurization Nei Tanei is placed in the outer tower of desulfurization, and the interior tower bottom of desulfurization is positioned at the spraying layer below of the outer tower of desulfurization and is communicated with the outer tower of desulfurization.
Further, said exhanst gas outlet is positioned at the outer top of tower of desulfurization, and said smoke inlet is positioned at the desulfurization top of tower, and the position of said smoke inlet is higher than exhanst gas outlet;
Further, the spraying layer top is provided with demister in the outer tower of said desulfurization;
Further, the nozzle installation direction on the spraying layer of the outer tower of said desulfurization is downward, and the nozzle installation direction in the said desulfurization on the spraying layer of tower upwards;
Further, the spraying layer of tower is respectively 2 ~ 6 layers in the spraying layer of the outer tower of said desulfurization and the desulfurization;
Further, corresponding one by one connection of the spraying layer of tower is shared spraying layer in the spraying layer of the outer tower of said desulfurization and the desulfurization;
Further, tower is circular tower in outer tower of said desulfurization and the desulfurization, and the coaxial setting of tower in outer tower of desulfurization and the desulfurization;
Further, tower supports through the beam that is installed on the outer tower of desulfurization in the said desulfurization.
The invention also discloses a kind of desulphurization system of using above-mentioned dicyclo high-efficiency desulfurization absorption tower; Comprise slurry circulating pump, oxidation air pipe, oxidation fan, slurry pump and said dicyclo high-efficiency desulfurization absorption tower; The inlet of said slurry circulating pump is communicated with the slurries pond on dicyclo high-efficiency desulfurization absorption tower, and outlet is communicated with the spraying layer on dicyclo high-efficiency desulfurization absorption tower, and said oxidation fan is communicated with the oxidation air pipe; Said oxidation air pipe stretches in the slurries pond, and said slurry pump is communicated with the slurries pond.
Further, be provided with agitator in the said slurries pond.
The beneficial effect of the utility model is: flue gas is got into by smoke inlet, and tower and slurries following current contact desulfuriation in desulfurization earlier gets into outer tower of desulfurization and the further desulfurization of slurries counter current contacting again, and last flue gas is discharged by exhanst gas outlet; Tower in outer tower of the desulfurization of two different-diameters that the utility model utilization is set-located and the desulfurization; In a tower, realized the series connection of two towers; Improved desulfuration efficiency greatly; And, solved the problem of water balance and material balance easily owing to the shared slurries of tower pond in outer tower of desulfurization and the desulfurization; The utility model has been simplified system when improving desulfuration efficiency, reduced floor space; The spraying layer quantity setting of the utility model is more flexible; The actual effect that plays 4 layers of spraying layer of two-layer spraying layer can be reduced to spraying layer quantity two-layerly, has reduced the height of tower; Reduced pump lift; Thereby reduced circulating pump quantity, can adopt the pump of big flow low lift, reduced cost and operating cost.
Description of drawings
For the purpose, technical scheme and the advantage that make the utility model is clearer, will combine accompanying drawing that the utility model is done further to describe in detail below, wherein:
Fig. 1 is the structural representation of the utility model;
Fig. 2 is the top plan view structural representation of the utility model;
Fig. 3 is the structural representation of the spraying layer on dicyclo high-efficiency desulfurization absorption tower.
The specific embodiment
Below will be with reference to accompanying drawing, the preferred embodiment of the utility model is carried out detailed description.
Fig. 1 is the structural representation of the utility model, and Fig. 2 is the top plan view structural representation of the utility model, and Fig. 3 is the structural representation of the spraying layer on dicyclo high-efficiency desulfurization absorption tower; As shown in the figure, the dicyclo high-efficiency desulfurization absorption tower of the utility model comprises outer tower 1 of desulfurization and the interior tower 2 of desulfurization; Outer tower 1 top of said desulfurization is provided with exhanst gas outlet 3, and desulfurization is provided with spraying layer 4 in outer tower 1 middle part, and outer tower 1 bottom of desulfurization is slurries pond 5; Tower 2 tops are provided with smoke inlet 6 in the said desulfurization; Be provided with spraying layer 4 in tower 2 middle parts in the desulfurization, be placed in the outer tower 1 of desulfurization in the said desulfurization in the tower 2, interior tower 2 bottoms of desulfurization are positioned at spraying layer 4 belows of the outer tower 1 of desulfurization and are communicated with the outer tower 1 of desulfurization; Flue gas is got into by smoke inlet 6, and tower 2 and slurries following current contact desulfuriation in desulfurization get into outer tower 1 of desulfurization and the further desulfurization of slurries counter current contacting more earlier, and last flue gas is discharged (flue gas flow direction is shown in arrow among Fig. 1) by exhanst gas outlet 3.
In the present embodiment, said exhanst gas outlet 3 is positioned at outer tower 1 top of desulfurization, and said smoke inlet 6 is positioned at desulfurization tower 2 tops, and the position of said smoke inlet 6 is higher than exhanst gas outlet 3; Flue gas gateway direction all can 360 the rotation of degree, can be provided with flexibly according to actual conditions.
As the further improvement of the utility model, spraying layer 4 tops are provided with demister 7 in the outer tower 1 of said desulfurization; Flue gas is discharged after demister 7 is removed water smoke and drop again.
As the further improvement of the utility model, nozzle 8 installation directions on the spraying layer 4 of the outer tower 1 of said desulfurization are downward, and nozzle 8 installation directions in the said desulfurization on the spraying layer 4 of tower 2 upwards; The outer tower 1 of desulfurization is a countercurrent tower, and tower 2 is the following current tower in the desulfurization, and nozzle 8 installation directions of tower 2 upwards can increase adverse current section in the following current tower in the desulfurization, improve desulfuration efficiency.
In the present embodiment, the spraying layer 4 of the outer tower 1 of said desulfurization is respectively 4 layers with the spraying layer 4 of the interior tower 2 of desulfurization; In the practical application, the spraying layer quantity setting of the utility model is more flexible, and spraying layer quantity can be 2 ~ 6 layers; The actual effect that plays 4 layers of spraying layer of the two-layer spraying layer of the utility model can be reduced to spraying layer quantity two-layerly, reduces the height of tower, reduces pump lift.
As the further improvement of the utility model, corresponding one by one connection of spraying layer 4 of the spraying layer 4 of the outer tower 1 of said desulfurization and the interior tower 2 of desulfurization is shared spraying layer; Outer tower 1 of desulfurization and the interior tower 2 shared spraying layers of desulfurization are all supplied slurries by a slurry circulating pump, thereby are reduced slurry circulating pump quantity, can adopt the pump of big flow low lift, reduce cost and operating cost.
In the present embodiment, the outer tower 1 of said desulfurization is circular tower with the interior tower 2 of desulfurization, and tower 2 coaxial settings in outer tower 1 of desulfurization and the desulfurization.
In the present embodiment, tower 2 supports through the beam 9 that is installed on the outer tower 1 of desulfurization in the said desulfurization.
The desulphurization system on the above-mentioned dicyclo high-efficiency desulfurization of the use of the utility model absorption tower; Comprise slurry circulating pump 10, oxidation air pipe 11, oxidation fan 12, slurry pump 13 and said dicyclo high-efficiency desulfurization absorption tower; The inlet of said slurry circulating pump 10 is communicated with the slurries pond 5 on dicyclo high-efficiency desulfurization absorption tower; Outlet is communicated with the spraying layer 4 on dicyclo high-efficiency desulfurization absorption tower; Said oxidation fan 12 is communicated with oxidation air pipe 11, and said oxidation air pipe 11 stretches in the slurries pond 5, and said slurry pump 13 is communicated with slurries pond 5; Be provided with agitator 14 in the said slurries pond 5.Slurries arrive spraying layer 4 through slurry circulating pump 10 pressurizations, and nozzle 8 ejections from spraying layer 4 is installed contact with the flue gas that contains sulfur dioxide, and chemical reaction takes place, and remove sulfur dioxide; Absorbed slurries fully oxidation of quilt in slurries pond 5 of sulfur dioxide, oxidation air is provided by oxidation fan 12; Slurries pond 5 is communicated with slurry pump 13, discharges gypsum to dewatering system.
Outer tower 1 of the desulfurization of two different-diameters that the utility model utilization is set-located and the interior tower 2 of desulfurization; In a tower, realized the series connection of two towers; Improved desulfuration efficiency greatly; And, solved the problem of water balance and material balance easily owing to outer tower 1 of desulfurization and the interior tower 2 shared slurries ponds 5 of desulfurization; The utility model has been simplified system when improving desulfuration efficiency, reduced floor space, has reduced cost and operating cost.
Explanation is at last; Above embodiment is only unrestricted in order to the technical scheme of explanation the utility model; Although the preferred embodiment through with reference to the utility model is described the utility model; But those of ordinary skill in the art should be appreciated that and can make various changes to it in form with on the details, and the spirit and the scope of the utility model that does not depart from appended claims and limited.

Claims (10)

1. dicyclo high-efficiency desulfurization absorption tower; It is characterized in that: comprise tower (2) in outer tower (1) of desulfurization and the desulfurization; Outer tower (1) top of said desulfurization is provided with exhanst gas outlet (3), and the outer tower (1) of desulfurization is provided with spraying layer (4) in the middle part, and outer tower (1) bottom of desulfurization is slurries pond (5); Tower (2) top is provided with smoke inlet (6) in the said desulfurization; Be provided with spraying layer (4) in tower (2) middle part in the desulfurization, be placed in the outer tower (1) of desulfurization in the said desulfurization in the tower (2), the interior tower (2) of desulfurization bottom is positioned at spraying layer (4) below of the outer tower (1) of desulfurization and is communicated with the outer tower (1) of desulfurization.
2. dicyclo high-efficiency desulfurization according to claim 1 absorption tower; It is characterized in that: said exhanst gas outlet (3) is positioned at outer tower (1) top of desulfurization; Said smoke inlet (6) is positioned at desulfurization tower (2) top, and the position of said smoke inlet (6) is higher than exhanst gas outlet (3).
3. dicyclo high-efficiency desulfurization according to claim 1 absorption tower is characterized in that: the outer interior spraying layer of tower (1) (4) of said desulfurization top is provided with demister (7).
4. dicyclo high-efficiency desulfurization according to claim 1 absorption tower; It is characterized in that: nozzle (8) installation direction on the spraying layer (4) of the outer tower (1) of said desulfurization is downward, and nozzle (8) installation direction in the said desulfurization on the spraying layer (4) of tower (2) upwards.
5. dicyclo high-efficiency desulfurization according to claim 4 absorption tower is characterized in that: the spraying layer (4) of tower (2) is respectively 2 ~ 6 layers in the spraying layer (4) of the outer tower (1) of said desulfurization and the desulfurization.
6. dicyclo high-efficiency desulfurization according to claim 5 absorption tower is characterized in that: corresponding one by one connection of the spraying layer (4) of tower (2) is shared spraying layer in the spraying layer (4) of the outer tower (1) of said desulfurization and the desulfurization.
7. dicyclo high-efficiency desulfurization according to claim 1 absorption tower is characterized in that: tower (2) is circular tower in outer tower (1) of said desulfurization and the desulfurization, and the coaxial setting of tower (2) in outer tower (1) of desulfurization and the desulfurization.
8. dicyclo high-efficiency desulfurization according to claim 7 absorption tower is characterized in that: tower (2) supports through the beam (9) that is installed on the outer tower (1) of desulfurization in the said desulfurization.
9. use the desulphurization system on any described dicyclo high-efficiency desulfurization absorption tower of claim 1 to 8; It is characterized in that: comprise slurry circulating pump (10), oxidation air pipe (11), oxidation fan (12), slurry pump (13) and said dicyclo high-efficiency desulfurization absorption tower; The inlet of said slurry circulating pump (10) is communicated with the slurries pond (5) on dicyclo high-efficiency desulfurization absorption tower; Outlet is communicated with the spraying layer (4) on dicyclo high-efficiency desulfurization absorption tower; Said oxidation fan (12) is communicated with oxidation air pipe (11), and said oxidation air pipe (11) stretches in the slurries pond (5), and said slurry pump (13) is communicated with slurries pond (5).
10. desulphurization system according to claim 9 is characterized in that: be provided with agitator (14) in the said slurries pond (5).
CN2012200603471U 2012-02-23 2012-02-23 Dual-ring high-efficiency desulfurization absorbing tower and desulfurization system using same Active CN202438258U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102553430A (en) * 2012-02-23 2012-07-11 中电投远达环保工程有限公司 Bicyclic high-efficiency desulfurization absorption tower and desulfurization system employing tower
CN106402916A (en) * 2016-11-29 2017-02-15 郑州中拓知识产权代理有限公司 Boiler pulverized coal feeding device capable of conducting layered throwing

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102553430A (en) * 2012-02-23 2012-07-11 中电投远达环保工程有限公司 Bicyclic high-efficiency desulfurization absorption tower and desulfurization system employing tower
CN106402916A (en) * 2016-11-29 2017-02-15 郑州中拓知识产权代理有限公司 Boiler pulverized coal feeding device capable of conducting layered throwing

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