CN208727173U - Wet desulfurization system - Google Patents
Wet desulfurization system Download PDFInfo
- Publication number
- CN208727173U CN208727173U CN201820658030.5U CN201820658030U CN208727173U CN 208727173 U CN208727173 U CN 208727173U CN 201820658030 U CN201820658030 U CN 201820658030U CN 208727173 U CN208727173 U CN 208727173U
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- CN
- China
- Prior art keywords
- spray
- reverse
- tower
- wet desulfurization
- desulfurization system
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 51
- 230000023556 desulfurization Effects 0.000 title claims abstract description 44
- 239000007921 spray Substances 0.000 claims abstract description 192
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 42
- 239000003546 flue gas Substances 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims description 15
- 239000002002 slurry Substances 0.000 claims description 14
- 239000000779 smoke Substances 0.000 claims description 9
- 210000002966 serum Anatomy 0.000 claims description 8
- 238000006243 chemical reaction Methods 0.000 claims description 7
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 230000009466 transformation Effects 0.000 description 5
- 230000008569 process Effects 0.000 description 4
- 238000005507 spraying Methods 0.000 description 4
- 238000001816 cooling Methods 0.000 description 3
- 239000002253 acid Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 235000019504 cigarettes Nutrition 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000003009 desulfurizing effect Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 238000004134 energy conservation Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 239000013535 sea water Substances 0.000 description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 239000005864 Sulphur Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000013475 authorization Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000008021 deposition Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000007639 printing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 230000003134 recirculating effect Effects 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model relates to be suitable for the desulphurization system of spray column rebuilding construction, disclose a kind of wet desulfurization system, including spray column (1), the spray column (1) has the inlet flue duct (10) and exhaust pass (13) arranged along flow of flue gas path, reverse spray tower (3) are also in series on the flow of flue gas path, the reverse spray tower (3) is connected to the inlet flue duct (10), so that former flow of flue gas is sequentially through the reverse spray tower (3) and the spray column (1), the wet desulfurization system is not under the premise of changing spray layer number in spray column, improve the desulfuration efficiency of desulphurization system, to cancel the restriction that desulphurization system is transformed in the height dimension in spray column place place.
Description
Technical field
The utility model relates to a kind of desulphurization systems suitable for spray column rebuilding construction, more particularly to a kind of wet process
Desulphurization system.
Background technique
Combined according to the National Development and Reform Commission, Environmental Protection Department and National Energy Board issue " coal electricity energy conservation subtracts
Row's upgrading with action plan (2014-2020) is transformed " and " about printing and distributing < implement in full coal-burning power plant's minimum discharge and energy conservation changes
Make programme of work > notice " relevant regulations, east key area coal-burning power plant SO2 concentration of emission be not higher than 35mg/Nm3, cigarette
Dirt concentration of emission is not higher than 10mg/Nm3.Under new environmental protection standard, the minimum discharge transformation that coal-burning power plant faces a new round is appointed
Business.
Existing wet desulfurization system is mostly used spray column and carries out layering spray to former flue gas, and neat stress is dropped after post-processing
Discharge.A kind of typical spray tower structure, former flue gas enter in spray column 1 from inlet flue duct 10 as shown in Figure 1, spray
The stock tank 11 of 1 bottom of tower is by pumping in pressurized delivered to spray tube 12, and the spray head by installing on spray tube 12 sprays,
Spray tube 12 is disposed with multilayer along the short transverse of spray column 1, the flue gas to carry out layering spray desulfurization to flue gas, after spray
It is discharged by rinsing, after demisting from the exhaust pass 13 on 1 top of spray column.
Based on the needs of minimum discharge transformation task, the structure of the spray column in Fig. 1 need further transformation with
Meet desulfurization discharge standard.However, the desulfurization effect of spray column depends on the number for the spraying layer that spray tube 12 is formed, spray is improved
The desulfurization effect of tower is drenched, inevitable requirement increases the quantity of spraying layer.And in spray column, spraying layer along spray column 1 height
Directional spreding, transformation spray column are limited by the height space in place.
A kind of flue gas of seawer washing twice is disclosed in the Chinese invention patent that Authorization Notice No. is CN104888586B
Sulfur method and device, wherein in order to improve desulfuration efficiency and make full use of the seawater of spray, the series connection of two-stage spray column is made
With, and by the stock tank intercommunication of two spray tower bottoms, so that seawater can be flowed from second level spray column into level-one spray column, formed
Circulation.In this scenario, it connects the forms of two to more spray columns, although two-step desulfurization can be formed to improve desulfurization effect
Rate, still, in order to be connected to the stock tank in two spray columns, two spray tower bottom stock tank bottom levels should be consistent, in this way,
The height of level-one spray column exhaust pass is consistent with the height of the inlet flue duct of second level spray column, will lead to flue gas in this way in level-one
Spray dwell time in the tower is less, and desulfurization is insufficient to enter two-grade desulfurizing tower.Actual desulfuration efficiency improves unobvious.
Utility model content
The purpose of this utility model is to overcome the above problems of the existing technology, provide a kind of wet desulphurization system
System, the wet desulfurization system improve the desulfuration efficiency of desulphurization system under the premise of not changing spray layer number in spray column,
To cancel the restriction that desulphurization system is transformed in the height dimension in spray column place place.
To achieve the goals above, the utility model provides a kind of wet desulfurization system, including spray column, the spray column
With the inlet flue duct and exhaust pass arranged along flow of flue gas path, it is also in series with reverse spray tower on the flow of flue gas path,
The reverse spray tower is connected to the inlet flue duct, so that former flow of flue gas is sequentially through the reverse spray tower and the spray column.
Preferably, the bottom of the spray column is provided with the stock tank for storing spray liquid, and the wet desulfurization system is also
Serum recycle including the spray tube for being delivered to the spray liquid in the stock tank in the reverse spray tower and the spray column
Pump group.
Preferably, it is provided with and communicated between the reverse spray tower and the spray column for drawing the slurries in the reverse spray tower
Return the return pipe of the stock tank.
Preferably, the return pipe is set to the bottom wall of the reverse spray tower, and diagonally downward from the bottom wall of the reverse spray tower
Extend to the stock tank.
Preferably, the circulating pump in the serum recycle pump group is set as frequency conversion slurry circulating pump.
Preferably, oxidation wind system is additionally provided on the spray column.
Preferably, the wet desulfurization system includes multiple reverse spray tower in parallel with the spray column, and the reverse spray tower is logical
It crosses selection access component and selectively accesses the flow of flue gas path.
Preferably, the selection access component includes gas baffle, which controls the smoke inlet of the reverse spray tower
It closes or opens.
Preferably, the selection access component further includes the reverse jet tube road being set in the reverse spray tower and is used to select
Spray liquid enters or does not enter the slurries control valve of the reverse spray tower.
Preferably, the outlet flue of the reverse spray tower is connected to the inlet flue duct of the spray column by straight tube, so that former
Flue gas is sequentially through the reverse spray tower and the spray column.
Through the above technical solutions, reverse spray tower, in sweetening process, former flue gas to be desulfurization enters reverse spray tower from top to bottom
Inside, spray liquid is sprayed and is contacted towards former flow of flue gas direction from bottom to top, to form turbulence in reverse spray tower
Conversion zone realizes flue gas, that is, cold, acid gas absorption and three functions of dust desulfurization in this conversion zone, and the reverse spray tower is to go here and there
The form connect compensates the desulfuration efficiency of existing spray column, not change the spray layer number in spray column and spray tower structure
Under conditions of, cancel the restriction that desulphurization system is transformed in the height dimension in spray column place place.Simultaneously as reverse spray tower sheet
Body has the effect of that flue gas is i.e. cold, and before being series at spray column, former flue gas is when by reverse spray tower, in addition to realizing that level-one is de-
Sulphur also achieves the cooling effect of flue gas, therefore, no setting is required before the inlet flue duct of spray column flue gas cooling device.
Detailed description of the invention
Fig. 1 is a kind of typical structure of the spray column mentioned in background technique；
Fig. 2 is a kind of preferred implementation structure of the wet desulfurization system of the utility model.
Description of symbols
1- spray column；10- inlet flue duct；11- stock tank；12- spray tube；13- exhaust pass；14- demister；15- is rinsed
Water installations；2- serum recycle pump group；30- smoke inlet；31- outlet flue；32- reverse jet tube road；4- return pipe；6- straight tube.
Specific embodiment
In the present invention, in the absence of explanation to the contrary, the noun of locality used such as " upper and lower, left and right " be
The location discrimination carried out according to the normal orientation of vertical direction.
As shown in Figure 2, according to a kind of wet desulfurization system of preferred embodiment of the utility model, including spray column 1,
The spray column 1 has the inlet flue duct 10 and exhaust pass 13 arranged along flow of flue gas path, the inlet flue duct 10 of spray column 1
And/or it is connected with reverse spray tower on exhaust pass 13, so that reverse spray tower is connected on flow of flue gas path with spray column 1, former cigarette
Flow of air passes through concatenated reverse spray tower and spray column 1.
In the transformation process of existing spray column 1, by reverse spray tower of connecting on the flow of flue gas path that former flue gas flows through,
The deficiency of the desulfuration efficiency of spray column 1 to be rebuilt is compensated using the high-efficiency desulfurization effect of reverse spray tower.
Reverse spray tower, which has, to be introduced the intracorporal smoke inlet 30 of tower for flue gas and the flue gas after inverse spray desulfurization is drawn going out for tower body
Mouth 31 is disposed with the reverse jet tube road 32 for spraying spray liquid from bottom to top in tower body.Flue gas enters reverse spray tower from smoke inlet 30
It in tower body, and moves from top to bottom, reverse jet tube road 32 sprays spray liquid from bottom to top, and spray liquid is inversely contacted with flue gas, in gas
Under the adjusting of the amount of surging equilibrium principle, the conversion zone (also becoming froth zone) of turbulence is formed inside tower body, in the reaction zone
Interior formation flue gas chilling, acid gas absorbs and three functions of dust desulfurization.Especially in another preferred embodiment, reverse spray tower string
It is coupled to before spray column 1, that is, the outlet flue 31 of reverse spray tower is connected on the inlet flue duct 10 of spray column 1 with straight-run of pipe 6,
So that former flue gas enters in wet desulfurization system from smoke inlet 30, after inverse spray desulfurization process, simultaneously from the outflow of outlet flue 31
Enter in spray column 1 immediately.In this preferred embodiment, particular job principle of reverse spray tower may be omitted with original spray
The flue gas cooling device being arranged before leaching tower 1, further reduces the improvement cost of spray column 1.Also, the air inlet of reverse spray tower itself
Mode be from top to bottom, and the intake method of spray column 1 be from bottom to top, after former flue gas is flowed out from the outlet flue 31 of reverse spray tower,
It can be directly entered in the inlet flue duct 10 in low level of spray column 1, in this way, using the design feature of two kinds of desulfurizing towers, it is real
The desulfurization of existing higher efficiency.
It is of course also possible to the smoke inlet 30 for reverse spray tower of connecting on the exhaust pass 13 of spray column 1, former flue gas is according to original
Mode, using the inverse spray desulfurization of reverse spray tower, realizes the minimum discharge of entire wet desulfurization system after spray column 1.On the spot
When ground and cost allow, can also connect reverse spray tower before and after spray column 1.
Certainly, the quantity of reverse spray tower is not limited to one shown in Fig. 2, can be arranged according to the volume of former flue gas more
A and in parallel between multiple reverse spray towers, each reverse spray tower is preferably provided with selection access component, to pass through the selection access group
Whether part control reverse spray tower accesses on flow of flue gas path.
Specifically, selection access component includes gas baffle and/or slurries control valve, in which: gas baffle is set to pair
On the smoke inlet 30 for the reverse spray tower answered, to control opening or closing for the smoke inlet 30；Slurries control valve is for selecting spray liquid
Into or do not enter in the reverse jet tube road 32 in reverse spray tower.When part reverse spray tower accesses wet desulfurization system, it is not involved in desulfurization
Reverse spray tower can pass through selection access component above-mentioned and disconnect and the series relationship of spray column 1.
The bottom of spray column 1 is provided with the stock tank 11 for storing spray liquid, and the wet desulfurization system of the utility model is also
Serum recycle pump group 2 including the spray tube being pumped to the spray liquid in stock tank 11 in reverse spray tower and spray column 1.So set
It sets, reverse spray tower can use the stock tank 11 in spray column 1, provide the dress of spray liquid to its reverse jet tube road 32 without being in addition arranged
It sets, further reduces improvement cost and the construction time of spray column.
Further, when reverse spray tower and spray column 1 share the stock tank 11 of 1 bottom of spray column, in reverse spray tower and spray column 1
Between be further preferably provided with and communicated with for the slurries in reverse spray tower to be led back to the return pipe 4 in stock tank 11.Serum recycle pump group 2
Slurries in stock tank 11 are pumped in reverse jet tube road 32, when being fallen after spray liquid completes spray, are flowed back to by the return pipe 4
In stock tank 11, used with recirculating after being focused in stock tank 11 to slurries.Also, in a preferred embodiment
In, return pipe 4 is arranged on the bottom wall of reverse spray tower, and extends obliquely downward from the bottom wall to stock tank 11.In this way, the inverse spray of outflow
The slurries of tower have preferable mobility in the return pipe 4 being obliquely installed, can be stifled to avoid deposition of the slurries in return pipe 4
Plug.
Further, the circulating pump in serum recycle pump group 2 is set as frequency conversion slurry circulating pump.That is, circulating pump
To control the frequency of work by devices such as frequency converters, to adapt to the needs of the different desulfuration efficiencies of wet desulfurization system.
In addition, being provided with oxidation wind system on spray column 1.Specifically, which is set at stock tank 11, with to
Oxygen or oxygen containing gas are passed through in spray column 1.
Preferred embodiments of the present invention, still, the utility model and unlimited are described in detail in conjunction with attached drawing above
In this.In the range of the technology design of the utility model, a variety of simple variants can be carried out to the technical solution of the utility model,
It is combined in any suitable manner including each particular technique feature, in order to avoid unnecessary repetition, the utility model
To various combinations of possible ways, no further explanation will be given.But these simple variants and combination equally should be considered as the utility model institute
Disclosure belongs to the protection scope of the utility model.
Claims (10)
1. a kind of wet desulfurization system, including spray column (1), the spray column (1) have along flow of flue gas path arrange into
Mouth flue (10) and exhaust pass (13), which is characterized in that be also in series with reverse spray tower on the flow of flue gas path, the reverse spray tower
The inlet flue duct (10) are connected to, so that former flow of flue gas is sequentially through the reverse spray tower and the spray column (1).
2. wet desulfurization system according to claim 1, which is characterized in that the bottom setting of the spray column (1) is useful
In the stock tank (11) of storage spray liquid, the wet desulfurization system further includes for conveying the spray liquid in the stock tank (11)
To the serum recycle pump group (2) of the reverse spray tower and the spray tube in the spray column (1).
3. wet desulfurization system according to claim 2, which is characterized in that the reverse spray tower and the spray column (1) it
Between be provided with and communicated with return pipe (4) for the slurries in the reverse spray tower to be led back to the stock tank (11).
4. wet desulfurization system according to claim 3, which is characterized in that the return pipe (4) is set to the inverse spray
The bottom wall of tower, and extend obliquely downward from the bottom wall of the reverse spray tower to the stock tank (11).
5. wet desulfurization system according to claim 2, which is characterized in that the circulating pump in the serum recycle pump group (2)
It is set as frequency conversion slurry circulating pump.
6. wet desulfurization system according to claim 2, which is characterized in that be additionally provided with oxidation on the spray column (1)
Wind system.
7. wet desulfurization system according to claim 1, which is characterized in that the wet desulfurization system includes multiple and institute
The reverse spray tower of spray column (1) parallel connection is stated, the reverse spray tower selectively accesses the flow of flue gas path by selection access component.
8. wet desulfurization system according to claim 7, which is characterized in that the selection access component includes flue gas gear
Plate, the smoke inlet (30) which controls the reverse spray tower close or open.
9. wet desulfurization system according to claim 8, which is characterized in that the selection access component further includes being set to
On reverse jet tube road (32) in the reverse spray tower and for selecting spray liquid to enter or do not enter the slurries control of the reverse spray tower
Valve.
10. wet desulfurization system as claimed in any of claims 1 to 9, which is characterized in that the reverse spray tower goes out
Mouth (31) is connected to the inlet flue duct (10) of the spray column (1) by straight tube (6), so that former flue gas is sequentially through described
Reverse spray tower and the spray column (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820658030.5U CN208727173U (en) | 2018-05-04 | 2018-05-04 | Wet desulfurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820658030.5U CN208727173U (en) | 2018-05-04 | 2018-05-04 | Wet desulfurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208727173U true CN208727173U (en) | 2019-04-12 |
Family
ID=66024218
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820658030.5U Active CN208727173U (en) | 2018-05-04 | 2018-05-04 | Wet desulfurization system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208727173U (en) |
-
2018
- 2018-05-04 CN CN201820658030.5U patent/CN208727173U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 100011 Beijing Dongcheng District, West Binhe Road, No. 22 Patentee after: China Shenhua Energy Co.,Ltd. Patentee after: BEIJING GUOHUA ELECTRIC POWER Corp.,Ltd. Patentee after: Guoneng Yuedian Taishan Power Generation Co.,Ltd. Patentee after: SHENHUA GUOHUA (BEIJING) ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Address before: 100011 Shenhua building, 22 West Binhe Road, Dongcheng District, Beijing Patentee before: China Shenhua Energy Co.,Ltd. Patentee before: BEIJING GUOHUA ELECTRIC POWER Corp.,Ltd. Patentee before: GUANGDONG GUOHUA YUEDIAN TAISHAN POWER GENERATION Co.,Ltd. Patentee before: SHENHUA GUOHUA (BEIJING) ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. |