CN201618513U - Flue gas desulfurization and waste liquor treatment system for boilers - Google Patents
Flue gas desulfurization and waste liquor treatment system for boilers Download PDFInfo
- Publication number
- CN201618513U CN201618513U CN2010200147319U CN201020014731U CN201618513U CN 201618513 U CN201618513 U CN 201618513U CN 2010200147319 U CN2010200147319 U CN 2010200147319U CN 201020014731 U CN201020014731 U CN 201020014731U CN 201618513 U CN201618513 U CN 201618513U
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- desulfurization
- black liquor
- flue
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Abstract
The utility model discloses a flue gas desulfurization and waste liquor treatment system for boilers, which comprises a desulfurization tower, a black liquor tank, a spraying device, a demister, a desulfurization island, a waste liquor tank and a coal slurry mixing bin. The arrangement relationship of the above components includes that the top of the desulfurization tower is provided with a flue, the demister is mounted on an outlet of the flue, an outlet of the demister is communicated with a flue of a chimney, a spraying absorbing device arranged on the upper portion of the desulfurization tower is communicated with the black liquor tank, the bottom of the desulfurization tower is respectively provided with a smoke inlet and a waste liquor outlet, the waste liquor outlet is communicated with the desulfurization island, the desulfurization island is communicated with the black liquor tank, another pump of the system is a screw pump, an outlet of the screw pump is communicated with the waste liquor tank, the waste liquor tank is communicated with the coal slurry mixing bin, the coal slurry mixing bin is communicated with a boiler inlet pipeline, and the spraying absorbing device is a group of high-pressure sprayers. The total system is operated in a full closed condition without causing secondary pollution, and has fine economic benefit and environmental-protection benefit.
Description
Technical field
The utility model relates to the boiler flue gas desulfurization system, especially the boiler of power plant flue gas desulphurization system.
Background technology
At present, boiler smoke is one of atmosphere major polluting sources, especially controls the emphasis that coal fire discharged sulfur dioxide is Air Pollution Control.And thermal power plant's SO2 emissions are emphasis of the coal-fired sulfur dioxide pollution of control.Simultaneously, disposing for the accessory substance after the desulfurization also is our antifouling emphasis, otherwise can cause secondary pollution.
In recent years, large quantities of flue gas desulphurization systems arise at the historic moment, existing desulphurization system comprises the pretreatment unit of sulfur-containing smoke gas, is master's desulfurizer and the concentrated and separator of the product after the purification by desulfurizing tower, though this desulphurization system reaches the purpose of desulfurization to a certain extent, but have the following disadvantages: the one, need filler in the desulfurizing tower, under the filler stopping state, increase flue gas resistance, thereby increased the load of boiler; The 2nd, complex structure, operating cost is higher; The 3rd, accessory substance after the desulfurization needs to handle in addition, handles badly can cause new environmental pollution again.
The utility model content
The utility model is the problem that the accessory substance after solution existing flue gas desulphurization system complex structure, operating cost valency height and the desulfurization causes secondary environmental pollution, and a kind of boiler flue gas desulfurization and liquid waste treatment system thereof are provided.
For addressing the above problem, the technical scheme that the utility model is taked is: it comprises desulfurizing tower, it is characterized in that, it also comprises black liquor pond, spray equipment, demister, desulfurization island, waste liquid pool and coal slime mixing bunker, above-mentioned each arrangements of components relation is: be provided with flue at the desulfurizing tower top, demister is installed on the flue outlet, and the demister outlet is connected with the flue of chimney; The spray absorption plant is arranged in desulfurizing tower top, and the black liquor pond is connected by circulation pump pipeline and spray absorption plant; Be respectively equipped with gas approach and waste liquid outlet in the desulfurizing tower bottom, waste liquid outlet is connected by pipeline and desulfurization island, and desulfurization island is provided with two pumps, a pump is the black liquor pump, the black liquor pump discharge is connected with the black liquor pond, and another pump is a screw pump, and the screw pump outlet is connected with waste liquid pool; Screw pump is installed on the waste liquid pool, and the screw pump outlet is connected with the coal slime mixing bunker again, and the lotion pump is installed on the coal slime mixing bunker, connects into the boiler tube road by the lotion pump.
Above-mentioned spray absorption plant is one group of high-pressure nozzle.
Operation principle of the present utility model is, with the alkaline papermaking black liquor that stores in the black liquor pond as desulfurizing agent, be incorporated into the spray absorption plant on desulfurizing tower top during desulfurization with pump, black liquor is the next boiler smoke in spray desulfurizing tower bottom from top to down, in spray drives in the wrong direction process, alkali and sulfur in smoke in the black liquor react, and the waste liquid that the reaction back generates flows into desulfurization island with unreacted black liquor; The waste liquid acid-base value that flows in the desulfurization island is detected, when pH value greater than 9 the time, waste liquid is back to the black liquor pond again and recycles as desulfurizing agent, when pH value less than 9 the time, waste liquid enters in the waste liquid pool, and the waste liquid in the waste liquid pool mixes to act as a fuel with the coal slime in the coal slime storehouse and burns into stove; The flue gas that is desulfurized is removed the black liquor of atomizing by demister, enters atmosphere from the flue of chimney.
The utility model has the advantages that:
1, the alkaline black liquor with the paper mill uses as desulfurizing agent, makes refuse obtain utilizing, and need not filler in the desulfurizing tower, and flue gas does not have resistance, has reduced boiler load.2, the demister outlet and the flue of chimney are connected, stoped the black liquor of atomizing to enter chimney corrosion flue; 3, the waste liquid in the desulfurization island both can reclaim as desulfurizing agent and recycle, can send into again and together send into boiler combustion after coal slime mixing bunker and coal slime mix, make that unreacted alkaline matter fully reacts the continuation desulfurization with sulfur dioxide in stove in the black liquor, sulfur-bearing composition not in the waste residue makes the black liquor desulfurization obtain 100% and utilizes.4, operating under the totally-enclosed situation of the utility model whole system carried out, and non-secondary pollution produces, and has good economic benefit and environmental benefit.
Description of drawings:
Fig. 1 is the utility model structure principle chart.
Among the figure: the 1-circulating pump; 2-sprays absorption plant; The 3-flue entrance; 4-desulfurizing tower flue; The 5-demister; The 6-flue outlet; The 7-waste liquid outlet; The 8-desulfurization island; 9-black liquor pump; 10-black liquor pond; The 11-waste liquid pool; 12,13-screw pump; 14-coal slime mixing bunker; 15-lotion pump; 16-goes into the boiler tube road.
The specific embodiment
Below in conjunction with the operation principle explanation specific embodiment of the present utility model.
As can be seen from Figure 1, the utility model comprises black liquor pond 10 on the whole, desulfurizing tower, demister 5, desulfurization island 8, waste liquid pool 11 and coal slime mixing bunker 14, above-mentioned each parts annexation is: in the black liquor pond 10 alkaline papermaking black liquor introduce desulfurizing tower top by circulating pump 1, spray flue gas from top to down by spray absorption plant 2, enter desulfurizing tower from bottom to top from the flue gas of flue entrance 3, drive in the wrong direction with the black liquor that sprays from top to bottom, in the spray process, alkali and sulfur in smoke in the black liquor react, and the waste liquid that the reaction back generates flows into desulfurization island 8 with unreacted black liquor by waste liquid outlet 7; Waste liquid in the inflow desulfurization island 8 after testing, when pH value greater than 9 the time, again being back to black liquor pond 10 by black liquor pump 9 recycles as desulfurizing agent, when pH value less than 9 the time, enter in the waste liquid pool 11 by screw pump 12, waste liquid in the waste liquid pool 11 is introduced in the coal slime mixing bunkers 14 by screw pump 13, mixes acting as a fuel with the coal slime in the coal slime mixing bunker 14, by lotion pump 15 with go into boiler tube road 16 and go into stove and burn; The flue gas that is desulfurized is removed the black liquor of atomizing by demister 5, discharges from flue outlet 6.
Claims (1)
1. boiler flue gas desulfurization and liquid waste treatment system thereof, it comprises desulfurizing tower, it is characterized in that, it also comprises black liquor pond, spray equipment, demister, desulfurization island, waste liquid pool and coal slime mixing bunker, above-mentioned each arrangements of components relation is: be provided with flue at the desulfurizing tower top, demister is installed on the flue outlet, and the demister outlet is connected with the flue of chimney; The spray absorption plant is arranged in desulfurizing tower top, and the black liquor pond is connected by circulation pump pipeline and spray absorption plant; Be respectively equipped with gas approach and waste liquid outlet in the desulfurizing tower bottom, waste liquid outlet is connected by pipeline and desulfurization island, and desulfurization island is provided with two pumps, a pump is the black liquor pump, the black liquor pump discharge is connected with the black liquor pond, and another pump is a screw pump, and the screw pump outlet is connected with waste liquid pool; Screw pump is installed on the waste liquid pool, and the screw pump outlet is connected with the coal slime mixing bunker again, and the lotion pump is installed on the coal slime mixing bunker, connects into the boiler tube road by the lotion pump;
Described spray absorption plant is one group of high-pressure nozzle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200147319U CN201618513U (en) | 2010-01-08 | 2010-01-08 | Flue gas desulfurization and waste liquor treatment system for boilers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010200147319U CN201618513U (en) | 2010-01-08 | 2010-01-08 | Flue gas desulfurization and waste liquor treatment system for boilers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201618513U true CN201618513U (en) | 2010-11-03 |
Family
ID=43021969
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010200147319U Expired - Fee Related CN201618513U (en) | 2010-01-08 | 2010-01-08 | Flue gas desulfurization and waste liquor treatment system for boilers |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201618513U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174274A (en) * | 2014-08-13 | 2014-12-03 | 北京源深节能技术有限责任公司 | Spray packing tower for flue gas waste heat recovery |
| CN107142129A (en) * | 2017-03-23 | 2017-09-08 | 中国船舶重工集团公司第七研究所 | The preparation method and preparation facilities of coal slime lotion |
-
2010
- 2010-01-08 CN CN2010200147319U patent/CN201618513U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104174274A (en) * | 2014-08-13 | 2014-12-03 | 北京源深节能技术有限责任公司 | Spray packing tower for flue gas waste heat recovery |
| CN104174274B (en) * | 2014-08-13 | 2016-02-10 | 北京源深节能技术有限责任公司 | For the spray packed tower of flue gas waste heat recovery |
| CN107142129A (en) * | 2017-03-23 | 2017-09-08 | 中国船舶重工集团公司第七研究所 | The preparation method and preparation facilities of coal slime lotion |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20130108 |
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| CF01 | Termination of patent right due to non-payment of annual fee |