CN207980852U - A kind of double tower double circulation desulphurization device for high SO2 concentration flue gas - Google Patents
A kind of double tower double circulation desulphurization device for high SO2 concentration flue gas Download PDFInfo
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- CN207980852U CN207980852U CN201721911054.9U CN201721911054U CN207980852U CN 207980852 U CN207980852 U CN 207980852U CN 201721911054 U CN201721911054 U CN 201721911054U CN 207980852 U CN207980852 U CN 207980852U
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Abstract
The utility model provides a kind of double tower double circulation desulphurization device for high SO2 concentration flue gas,Belong to flue gas desulfurization technique field,Including primary cycle absorption tower and secondary cycle absorption tower,The interior of primary cycle absorption tower is equipped with the first ridge type demister successively from top to bottom,First atomizing spray layer and the first slurry pool,The interior of secondary cycle absorption tower is equipped with the second ridge type demister successively from top to bottom,Second atomizing spray layer,Flue gas even distribution deflector and the second slurry pool,Flue gas even distribution deflector is located above the outlet for passing smoke pipeline,Several second atomizing spray pipes are provided in second atomizing spray layer,Several flue gas escape rings are equipped on the second atomizing spray layer inner wall between second atomizing spray pipe,The utility model is for solving traditional desulfurizing tower SO2 concentration flue gases minimum discharge situation not up to standard high to coal-burning power plant of China,The target of the SO2 minimum discharges in flue gas to reach high SO2 concentration,And with raising gas-liquid mass transfer effect,The characteristics of being rationally evenly distributed with flue gas.
Description
Technical field
The utility model belongs to flue gas desulfurization technique field, and in particular to a kind of double tower for high SO2 concentration flue gas is double
Circulation desulfurizing device.
Background technology
Currently, traditional desulfurizing tower is difficult to meet the minimum discharge requirement of the high SO2 concentration flue gas of partial fuel coal power plant of China, i.e.,
Under the conditions of benchmark oxygen content 6%, SO2 concentration of emissions are less than 35mg/Nm3.The desulfurization that flue gas minimum discharge desulfurization is usually selected
Agent is lime stone, since lime stone is a kind of middle strong base-weak acid salt (CaCO3), compares the suction of the highly basic such as Na OH, NH3H2O
It receives for SO2, the lime stone slurry PH formed is high not as good as highly basic, and therefore, when using lime stone as absorbent, the gas phase of SO2 is flat
The concentration that weighs is then higher, and traditional desulfurization method of limestone-gypsum technology will realize that deep desulfuration is there are bigger difficulty, original
On the basis of technology, it must take and improve gas-liquid mass transfer effect, be rationally evenly distributed with the multinomial measures such as flue gas, be possible to realize desulfurization dress
The deep desulfuration set is to reach SO2 minimum discharges.
The energy consumption per unit that China's " 12th Five-Year Plan " planning outline proposes declines 16%, CO2 emission drop
Low 17%, total emissions of major pollutants reduces 8~10%.When " 12th Five-Year Plan " is the key that China's socio-economic development transition
Phase realizes that low carbon development, Green Development are the themes of " 12th Five-Year Plan " development.But due to the particularity of China's energy resource structure, in phase
In the long time, essence variation will not occur for the primary energy supply pattern based on coal.Generally speaking, " 12th Five-Year Plan "
Period, energy demand can also keep rapid growth situation, according to State Grid's project study center about《It is sent out for a long time in China
Electric energy power and electricity needs development prediction》, by the end of the year 2013, China's coal electricity installed capacity is 8.47 hundred million kilowatts.Prediction 2030
Hundred million kilowatts of year coal Denso machine 12.5-14；Hundred million kilowatts of the year two thousand fifty coal Denso machine 14-15.Large-scale coal fired power generation can be brought than existing
In more serious environmental problem.Coal-burning boiler in all parts of the country at present or will add desulfurizer, wherein 90% with
Upper using wet desulphurization device, desulfurizing agent is lime stone (CaCO3), and desulfurization purpose itself is removing pollutants in air SO2, is changed
Kind air quality.Since traditional desulfurizer is under national new environmental protection standard, qualified discharge is difficult to for high SO2 concentration flue gas,
Therefore traditional handicraft is improved, in having a extensive future for coal-burning power plant of China.
Utility model content
The purpose of this utility model is to provide a kind of double tower double circulation desulphurization device for high SO2 concentration flue gas, is used for
Traditional desulfurizing tower SO2 concentration flue gases minimum discharge situation not up to standard high to coal-burning power plant of China is solved, to reach high SO2 concentration
Flue gas in SO2 minimum discharges target, and with improve gas-liquid mass transfer effect, rationally be evenly distributed with flue gas the characteristics of.
The utility model provides the following technical solution：
A kind of double tower double circulation desulphurization device for high SO2 concentration flue gas, including primary cycle absorption tower and two level
Circulating absorption tower, the top on primary cycle absorption tower are equipped with the biography smoke pipeline being connected with the middle part on secondary cycle absorption tower, level-one
The middle part of circulating absorption tower is equipped with former cigarette air inlet pipe, and the top on secondary cycle absorption tower is equipped with net cigarette escape pipe, and primary cycle is inhaled
Receive tower inside from top to bottom successively be equipped with the first ridge type demister, the first atomizing spray layer and the first slurry pool, first
It is provided with several first atomizing spray pipes in atomizing spray layer, several first atomization sprays are uniformly installed on the first atomizing spray pipe
Mouth, and former cigarette air inlet pipe is located at the top of the first slurry pool, the inside on secondary cycle absorption tower is equipped with second successively from top to bottom
Ridge type demister, the second atomizing spray layer, flue gas even distribution deflector and the second slurry pool, flue gas even distribution deflector, which is located at, to be passed
Above the outlet of smoke pipeline, several second atomizing spray pipes, the second atomizing spray Guan Shangjun are provided in the second atomizing spray layer
It is even that several second atomizers are installed, it is equipped on the second atomizing spray layer inner wall between the second atomizing spray pipe several anti-
Flue gas escape ring.
Preferably, the oxygen for being equipped with blender in the first slurry pool and the second slurry pool and being arranged above blender
Change spray gun so that the slurries after reaction enter bottom slurry pond, by the oxidation spray gun in slurry pool by the sulfurous acid in slurries
Calcium is oxidized to calcium sulphate dihydrate, and to improve desulfuration efficiency and facilitate dewatering slurries, blender is that can be prevented using side-feeding type
The slurries of slurry pool precipitate.
Preferably, it passes and is equipped with first circulation pipe between smoke pipeline and former cigarette air inlet pipe, and first circulation pipe is equipped with first
Air passage one-way valve is equipped with second circulation pipe between net cigarette escape pipe and biography smoke pipeline, and the second circulation pipe is equipped with second
Air passage one-way valve so that in device and when the nozzle of net cigarette escape pipe causes blockages, flue gas can pass through the first gas
Road check valve and the second air passage one-way valve Fast-Balance primary cycle absorption tower and secondary cycle absorption tower air inlet and outlet
The pressure of mouth both sides is damaged to be caused by caused by local pressure is excessive in device.
Preferably, splicing is equipped with several deflector support plates on flue gas even distribution deflector, is opened up in deflector support plate
There are several deflector holes, the aperture of deflector hole is 20-50mm；The material of deflector support plate is 2205 stainless steels.
Preferably, the section of flue gas escape ring is triangle, and the material of flue gas escape ring is butyl rubber.
Preferably, the first atomizer and the second atomizer are bilateral atomizer so that the slurries grain of ejection
Diameter smaller increases slurries and smoke contacts area, to improve desulfuration efficiency；Increase slurries and repeat coverage rate, spray is made to cover
Rate is increased to 300% by 200%, strengthens assimilation effect.
The utility model has the beneficial effects that：
1, this double tower double circulation desulphurization device can effectively be absorbed mainly for flue gas middle and high concentration SO2, and SO2 concentration is made to reach
Discharge standard.
2, secondary cycle absorption tower makes flue gas more become and be evenly distributed with, convenient for being mixed with the uniform of slurries of the second atomizing spray layer
Contact, enhances gas-liquid contact, and enhancement mass transfer mechanism reduces liquid-gas ratio.
3, the bilateral atomizer of this double tower double circulation desulphurization device arrangement high-performance improves desulfuration efficiency, strengthens and absorbs effect
Fruit.
4, it is equipped with flue gas escape ring in secondary cycle absorption tower, can prevent flue gas from escaping.
Description of the drawings
Attached drawing is used to provide a further understanding of the present invention, and a part for constitution instruction, with this practicality
Novel embodiment for explaining the utility model, does not constitute limitations of the present invention together.In the accompanying drawings：
Fig. 1 is the structure sectional view of the utility model；
Label in figure：1 is blender, and 2 be oxidation spray gun, and 10 be primary cycle absorption tower, and 20 absorb for secondary cycle
Tower, 30 is pass smoke pipeline, and 40 be former cigarette air inlet pipe, and 50 be net cigarette escape pipe, and 60 be first circulation pipe, and 70 is unidirectional for the first gas circuit
Valve, 80 be the second air passage one-way valve, and 90 be second circulation pipe, and 11 be the first ridge type demister, and 12 be the first atomizing spray
Layer, 13 be the first slurry pool, and 21 be the second ridge type demister, and 22 be the second atomizing spray layer, and 23 be flue gas even distribution water conservancy diversion
Plate, 24 be the second slurry pool, and 25 be flue gas escape ring.
Specific implementation mode
As shown in Figure 1, a kind of structure sectional view of double tower double circulation desulphurization device for high SO2 concentration flue gas, at this
In embodiment, including primary cycle absorption tower 10 and secondary cycle absorption tower 20, the top on primary cycle absorption tower 10 are equipped with
The middle part of the biography smoke pipeline 30 being connected with the middle part on secondary cycle absorption tower 20, primary cycle absorption tower 10 is equipped with former cigarette air inlet pipe
40, the top on secondary cycle absorption tower 20 is equipped with net cigarette escape pipe 50, and the inside on primary cycle absorption tower 10 is from top to bottom successively
Equipped with the first ridge type demister 11, the first atomizing spray layer 12 and the first slurry pool 13, frame in the first atomizing spray layer 12
Equipped with several first atomizing spray pipes, several first atomizers, and former cigarette air inlet are uniformly installed on the first atomizing spray pipe
Pipe 40 is located at the top of the first slurry pool 13, and the inside on secondary cycle absorption tower 20 is removed equipped with the second ridge type successively from top to bottom
Day with fog 21, the second atomizing spray layer 22, flue gas even distribution deflector 23 and the second slurry pool 24, flue gas even distribution deflector 23 are located at
Above the outlet for passing smoke pipeline 30, several second atomizing spray pipes, the second atomizing spray are provided in the second atomizing spray layer 22
Several second atomizers are uniformly installed, ring is set on 22 inner wall of the second atomizing spray layer between the second atomizing spray pipe on pipe
There are several flue gas escape rings 25, the first atomizer and second atomizer are bilateral atomizer so that spray
The slurries grain size smaller gone out increases slurries and smoke contacts area, to improve desulfuration efficiency；Increase slurries and repeat coverage rate,
So that spray coverage rate is increased to 300% by 200%, strengthens assimilation effect.
As shown in Figure 1, a kind of structure sectional view of double tower double circulation desulphurization device for high SO2 concentration flue gas, at this
In embodiment, the oxygen that is equipped with blender 1 in the first slurry pool 13 and the second slurry pool 24 and is arranged above blender 1
Change spray gun 2 so that the slurries after reaction enter bottom slurry pond, by the oxidation spray gun in slurry pool by the sulfurous acid in slurries
Calcium is oxidized to calcium sulphate dihydrate, and to improve desulfuration efficiency and facilitate dewatering slurries, blender 1 is using side-feeding type, Neng Goufang
The only slurries precipitation of slurry pool.
As shown in Figure 1, a kind of structure sectional view of double tower double circulation desulphurization device for high SO2 concentration flue gas, at this
It in embodiment, passes and is equipped with first circulation pipe 60 between smoke pipeline 30 and former cigarette air inlet pipe 40, and first circulation pipe 60 is equipped with the
One air passage one-way valve 70 is equipped with second circulation pipe 90 between net cigarette escape pipe 50 and biography smoke pipeline 30, and described second follows
Endless tube 90 is equipped with the second air passage one-way valve 80 so that in device and the nozzle of net cigarette escape pipe 50 causes blockages
When, flue gas can balance primary cycle absorption tower 10 and two level by the first air passage one-way valve 70 and the second air passage one-way valve 80
The pressure of circulating absorption tower 20 air inlet and gas outlet both sides, to be caused by caused by local pressure is excessive in device
Damage.
The utility model has the beneficial effects that：Flue gas enters from former cigarette air inlet pipe 40, the cigarette in primary cycle absorption tower 10
Gas carries out gas-liquid contact with top-down lime stone slurry from bottom to top, and the slurries after reaction enter the first slurry pool of bottom
13, by the oxidation spray gun 2 in pond by the calcium sulfite oxidation in slurries at calcium sulphate dihydrate (gypsum), flue gas goes successively to two
Grade circulating absorption tower 20 so that gas is more evenly distributed by flue gas even distribution deflector 23, with top-down lime stone slurry into
Row gas-liquid contact finally passes through the second demister, outside discharge tower up to standard, and when the nozzle of cigarette escape pipe 50 goes out in device and only
When existing clogging, flue gas can pass through 80 Fast-Balance primary cycle of the first air passage one-way valve 70 and the second air passage one-way valve
The pressure of absorption tower 10 and secondary cycle absorption tower 20 air inlet and gas outlet both sides, to which office in device will not be caused by
Damage caused by portion's pressure is excessive.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the utility model, although ginseng
The utility model is described in detail according to previous embodiment, it for those skilled in the art, still can be with
Technical scheme described in the above embodiments is modified or equivalent replacement of some of the technical features.It is all
Within the spirit and principles of the present invention, any modification, equivalent replacement, improvement and so on should be included in this practicality
Within novel protection domain.
Claims (5)
1. a kind of double tower double circulation desulphurization device for high SO2 concentration flue gas, which is characterized in that including primary cycle absorption tower
And secondary cycle absorption tower, the top on the primary cycle absorption tower is equipped with to be connected with the middle part on the secondary cycle absorption tower
Biography smoke pipeline, the middle part on the primary cycle absorption tower is equipped with former cigarette air inlet pipe, is set at the top of the secondary cycle absorption tower
There are net cigarette escape pipe, the inside on the primary cycle absorption tower to be equipped with the first ridge type demister, the first mist successively from top to bottom
Change spraying layer and the first slurry pool, is provided with several first atomizing spray pipes in the first atomizing spray layer, described first
Several first atomizers are uniformly installed, and the former cigarette air inlet pipe is located at the upper of first slurry pool on atomizing spray pipe
The inside of side, the secondary cycle absorption tower is equipped with the second ridge type demister, the second atomizing spray layer, cigarette successively from top to bottom
Gas is evenly distributed with deflector and the second slurry pool, and the flue gas even distribution deflector is located above the outlet for passing smoke pipeline, described
It is provided with several second atomizing spray pipes in second atomizing spray layer, several are uniformly equipped on the second atomizing spray pipe
Two atomizers are equipped with several flue gas on the second atomizing spray layer inner wall between the second atomizing spray pipe and escape
Escape ring.
2. a kind of double tower double circulation desulphurization device for high SO2 concentration flue gas according to claim 1, feature exist
In the oxygen for being equipped with blender in first slurry pool and second slurry pool and being arranged above the blender
Change spray gun.
3. a kind of double tower double circulation desulphurization device for high SO2 concentration flue gas according to claim 1, feature exist
In equipped with first circulation pipe between the biography smoke pipeline and the former cigarette air inlet pipe, and the first circulation pipe is equipped with first
Air passage one-way valve is equipped with second circulation pipe between the net cigarette escape pipe and the biography smoke pipeline, and on the second circulation pipe
Equipped with the second air passage one-way valve.
4. a kind of double tower double circulation desulphurization device for high SO2 concentration flue gas according to claim 1, feature exist
In the section of the flue gas escape ring is triangle, and the material of the flue gas escape ring is butyl rubber.
5. a kind of double tower double circulation desulphurization device for high SO2 concentration flue gas according to claim 1, feature exist
In first atomizer and second atomizer are bilateral atomizer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721911054.9U CN207980852U (en) | 2017-12-30 | 2017-12-30 | A kind of double tower double circulation desulphurization device for high SO2 concentration flue gas |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721911054.9U CN207980852U (en) | 2017-12-30 | 2017-12-30 | A kind of double tower double circulation desulphurization device for high SO2 concentration flue gas |
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| CN207980852U true CN207980852U (en) | 2018-10-19 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368792A (en) * | 2019-08-19 | 2019-10-25 | 北京首钢国际工程技术有限公司 | A kind of double tower Two-way Cycle wet desulphurization device for wearing series-parallel flue |
-
2017
- 2017-12-30 CN CN201721911054.9U patent/CN207980852U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110368792A (en) * | 2019-08-19 | 2019-10-25 | 北京首钢国际工程技术有限公司 | A kind of double tower Two-way Cycle wet desulphurization device for wearing series-parallel flue |
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