CN201643962U - Anti-dew wet type smoke desulphurization system - Google Patents
Anti-dew wet type smoke desulphurization system Download PDFInfo
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- CN201643962U CN201643962U CN2009202787251U CN200920278725U CN201643962U CN 201643962 U CN201643962 U CN 201643962U CN 2009202787251 U CN2009202787251 U CN 2009202787251U CN 200920278725 U CN200920278725 U CN 200920278725U CN 201643962 U CN201643962 U CN 201643962U
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- flue gas
- heat exchanger
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Abstract
An anti-dew wet type smoke desulphurization system comprises a heat exchanger, a wet type desulphurization tower, a dewatering demisting device, a mixer, and a byproduct and waste liquid treating apparatus. The smoke for treated is inputted into the heat exchanger to reduce the temperature by exchanging heat with the cold air entered inputted into the heat exchanger at the same time; then is leaded into the wet type desulphurization tower; the smoke purified by the wet type desulphurization tower is leaded into the dewatering demisting device for dewatering and demisting; then is leaded into the mixer for mixing with the air heated by the heat exchanger; then is leaded into a chimney for emission. The desulphurization byproduct and the waste liquid generated in the wet type desulphurization tower are leaded into the desulphurization byproduct and waste liquid treating apparatus for treatment. The apparatus of the utility model has the characteristic of preventing the purified smoke from dewing in the chimney.
Description
Technical field
The utility model relates to a kind of anti-condensation type wet flue gas desulfurization system, belongs to the flue gas desulfurization technique field.
Background technology
At present; especially large flue gas desulfurization adopts all is wet flue gas desulfurization system and technology in flue gas desulfurization; the wet flue gas desulfurization system exists two insoluble problems; first flue gas after being purified is owing to be acid saturated with moisture body; in chimney, can produce serious dewing corrosion; another problem is the cooling problem of wet type desulfurizing tower; the general heatproof of wet type desulfurizing tower inside lining anti-corrosive layer is at 80-90 ℃; usually the measure of taking mist cooling is with the protection anticorrosive coat, and this method shortcoming is that power consumption is high, in addition in case meet accident; fluctuation of service; then may damage anticorrosive coat, cause desulfurizing tower to be stopped transport, there is certain potential safety hazard in this method.For condensation trouble, adopt at present usually way that rotary type heat exchanger heats up as the wet flue gas heater to promote the temperature of wet flue gas, thereby reduce flue gas relative humidity, though this method has certain effect, but exist following problem: 1. owing to be the acidic wet flue gas, corrosivity is extremely strong, corresponding heat exchanger must adopt corrosion-resistant steel and strict anti-corrosion measure, cost is very high, and cause serious obstruction to influence heat exchanger operation on the heat exchanger, even scrap owing to grit in the wet flue gas is easy to stick under the moisture effect.2. do not change SO in the wet flue gas owing to heat up
3Concentration, fail to reduce acid dew point, and sour gas leak temperature is higher usually, the acid dewing corrosion is only most important corrosion, can only improve or avoid the steam dewing corrosion so depend intensification alone, can not avoid sour dewing corrosion, can not fundamentally solve the problem of smoke condensation corrosion.
Summary of the invention:
In order to overcome the flue gas anti-condensation device that present wet flue gas desulfurization system exists and the deficiency of measure, the utility model provides a kind of anti-condensation type wet flue gas desulfurization system, its injustice can thoroughly solve the problem of flue gas after desulfurization dewing corrosion in chimney, and can solve the flue gas cool-down problem, avoid that the investment of present anti-condensation device is big, energy consumption is big, the problem of fluctuation of service, serve multiple.
The technical scheme that its technical problem that solves the utility model adopts is: anti-condensation type wet flue gas desulfurization system is made up of heat exchanger, wet type desulfurizing tower, dehydrating demisting device, blender, desulfuration byproduct and liquid waste treating apparatus.Pending flue gas, heat exchanger link to each other,, the wet type desulfurizing tower links to each other, the dehydrating demisting device,, blender, chimney be continuous in proper order; Heat exchanger also links to each other with blender with cold air; The wet type desulfurizing tower also links to each other with desulfuration byproduct and liquid waste treating apparatus.1. the air (cold air) in flue gas to be clean (general temperature is more than 130 ℃) and the atmosphere carries out earlier heat exchange in heat exchanger, because flue gas to be clean is the dryness hot-air, and air is a clean gas, non-corrosiveness, so can adopt cheap common gas-to-gas heat exchanger heat exchange, after the heat exchange, flue gas to be clean is dropped to setting value, and cold air is heated to form the heated dry air of design temperature (general more than 100 ℃); 2. its temperature of flue gas to be clean after cooling is below wet type desulfurizing tower anticorrosive coat tolerable temperature, the wet type desulfurizing tower needn't mist cooling, and pending flue gas directly purifies through the wet type desulfurizing tower, afterwards, purify flue gas and carry out the dehydrating demisting processing, to remove the free water that purifies in the flue gas; 3. the purification flue gas after dehydrating demisting is handled is acid saturated wet flue gas, temperature is generally about 50 ℃, it is fully mixed in blender with heated dry air, like this flue gas of Hun Heing not only temperature (generally be controlled at more than 65 ℃) more than 50 ℃, and relative humidity reduces greatly, can solve the problem of steam dewing corrosion very effectively, and mixed flue gas, because the diluting effect of air makes SO in the flue gas
3Concentration has bigger reduction, thereby reduces acid dew-point temperature greatly, effectively avoids sour dewing corrosion, has also saved and has invested the wet flue gas heating system huge, that operating cost is high.Blender can be incorporated in the chimney, and the dehydrating demisting device can be incorporated in the wet type desulfurizing tower.More province is taken up an area of in system like this, can also save investment.
Description of drawings:
The utility model is described in further detail below in conjunction with drawings and Examples
Fig. 1: be system of the present utility model pie graph
Among the figure: 1. flue gas to be clean, 2. heat exchanger, 3. wet type desulfurizing tower, 4. dehydrating demisting device, 5. blender, 6.. chimney, 7. cold air, 8. desulfuration byproduct and liquid waste treating apparatus.
The specific embodiment
In Fig. 1, flue gas to be clean (1), heat exchanger (2), wet type desulfurizing tower (3), dehydrating demisting device (4), blender (5), chimney (6) order link to each other, cold air (7), heat exchanger (2), blender (5) order link to each other, and desulfurizing byproduct and liquid waste treating apparatus (8) link to each other with wet type desulfurizing tower (3).Flue gas to be clean (1) and cold air (7) enter heat exchanger (2) simultaneously carry out heat exchange after, flue gas to be clean (1) is lowered the temperature, entering wet type desulfurizing tower (3) is cleaned, after flue gas enters dehydrating demisting device dehydrating demisting after purifying, enter blender (5), here mix,, reduce SO to improve the temperature that purifies flue gas with the heated dry air that from heat exchanger (2), comes out
3Concentration, thus dewing corrosion prevented; Desulfurizing byproduct and waste liquid drain into desulfurizing byproduct and liquid waste treating apparatus is handled.
Claims (2)
1. anti-condensation type wet flue gas desulfurization system, be made up of heat exchanger, wet type desulfurizing tower, dehydrating demisting device, blender, desulfuration byproduct and liquid waste treating apparatus, it is characterized in that: pending flue gas, heat exchanger, wet type desulfurizing tower, dehydrating demisting device, blender, chimney are continuous in proper order; Heat exchanger also links to each other with blender with cold air; The wet type desulfurizing tower also links to each other with desulfuration byproduct and liquid waste treating apparatus.
2. anti-condensation type wet flue gas desulfurization according to claim 1 system is characterized in that blender can be incorporated in the chimney, and the dehydrating demisting device can be incorporated in the wet type desulfurizing tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202787251U CN201643962U (en) | 2009-11-09 | 2009-11-09 | Anti-dew wet type smoke desulphurization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202787251U CN201643962U (en) | 2009-11-09 | 2009-11-09 | Anti-dew wet type smoke desulphurization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201643962U true CN201643962U (en) | 2010-11-24 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202787251U Expired - Fee Related CN201643962U (en) | 2009-11-09 | 2009-11-09 | Anti-dew wet type smoke desulphurization system |
Country Status (1)
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| CN (1) | CN201643962U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154549A (en) * | 2014-08-08 | 2014-11-19 | 马玉峰 | Boiler wet desulfurization and demisting, smoke reheating and chimney corrosion prevention integrated device and method |
| CN107737493A (en) * | 2017-11-03 | 2018-02-27 | 四川省达州钢铁集团有限责任公司 | A kind of energy-saving desulfurization white cigarette governing system and method |
| CN109260885A (en) * | 2018-10-17 | 2019-01-25 | 苏州市朗吉科技有限公司 | Boiler smoke deep treatment and take off white device |
-
2009
- 2009-11-09 CN CN2009202787251U patent/CN201643962U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104154549A (en) * | 2014-08-08 | 2014-11-19 | 马玉峰 | Boiler wet desulfurization and demisting, smoke reheating and chimney corrosion prevention integrated device and method |
| CN107737493A (en) * | 2017-11-03 | 2018-02-27 | 四川省达州钢铁集团有限责任公司 | A kind of energy-saving desulfurization white cigarette governing system and method |
| CN109260885A (en) * | 2018-10-17 | 2019-01-25 | 苏州市朗吉科技有限公司 | Boiler smoke deep treatment and take off white device |
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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: 20101124 Termination date: 20151109 |
|
| EXPY | Termination of patent right or utility model |