CN103816794A - Stack gas treatment device through adopting semi-dry method and treatment method of device - Google Patents
Stack gas treatment device through adopting semi-dry method and treatment method of device Download PDFInfo
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- CN103816794A CN103816794A CN201410079848.8A CN201410079848A CN103816794A CN 103816794 A CN103816794 A CN 103816794A CN 201410079848 A CN201410079848 A CN 201410079848A CN 103816794 A CN103816794 A CN 103816794A
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- flue gas
- absorber
- pipe
- water pump
- stack gas
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Abstract
The invention discloses a stack gas treatment device through adopting a semi-dry method and a treatment method of the device. The stack gas treatment device comprises an absorber, wherein a spray head is arranged in the absorber and is connected with a digestion tank through a digestion fluid pipe; a first water pump is arranged on the digestion fluid pipe; a CaO stock bin is arranged on the fluid container; the lower end of the absorber is connected with a circulation fluid container; the circulation fluid container is connected with the absorber through the circulation fluid pipe; a second water pump is arranged on the circulation fluid pipe; a stack gas feeding pipe is also arranged on the absorber; the absorber is connected with a chimney through a stack gas discharge pipe; a dust remover is arranged on the stack gases discharge pipe; an ash bin is arranged blow the dust remover. According to the stack gas treatment device through adopting the semi-dry method and the treatment method, through the reutilization of the hydrous mixture, waste water quantity and water consumption can be largely reduced; meanwhile, the semi-dry method used for stack gas treatment overcomes the defects of the dry method and the wet method for stack gas treatment, and the effect of stack gas treatment is improved.
Description
Technical field
The invention belongs to smoke gas treatment technical field, be specifically related to a kind of semidry method flue gas processing device and processing method thereof.
Background technology
Flue gas treating process divides three classes at present: wet method, dry method and semidry method; Wet processing maturation, efficiency are high, be widely used, but have that cost is high, floor space and water consumption greatly, easily produce secondary pollution, ammonia leaks and the problem such as equipment corrosion; The advantage of dry method is that technical process is simple, without sewage, dirty acid treatment problem, energy consumption is low, and after particularly purifying, flue-gas temperature is higher, is conducive to chimney exhaust diffusion, can not produce " white cigarette " phenomenon, flue gas after purification does not need post bake, and corrosivity is little, but that its shortcoming is desulfuration efficiency is lower, equipment is huge, investment is large, floor space is large, and operating technology requires high; Because wet method and dry method have certain shortcoming in smoke gas treatment, in order to overcome these shortcomings, and accomplish getting both of benefit and environmental protection, it is instant studying a set of semidry method flue gas processing device.
Summary of the invention
It is little that the technical problem to be solved in the present invention is to provide a kind of low cost, low water consumption, floor space, can avoid ammonia to leak and equipment corrosion, and have semidry method flue gas processing device and the processing method thereof of obvious desulfurized effect.
For addressing the above problem, the present invention adopts following technical scheme:
Semidry method flue gas processing device of the present invention, comprises absorber; Described absorber inside is provided with fog-spray nozzle; Described absorber is connected with digester by digestive juice pipe; On described digestive juice pipe, be provided with the first water pump; On described digester, be provided with CaO feed bin; Described absorber lower end is connected with circulation flow container; Described circulation flow container is also connected with absorber by circulation fluid pipe; On described circulation fluid pipe, be provided with the second water pump; On described absorber, be also provided with flue gas and send into pipe; Described absorber is connected with chimney by smoke discharge pipe; On described smoke discharge pipe, be provided with deduster; Described deduster below is provided with ash silo.
Further, on described fog-spray nozzle, be provided with aperture.
Further, described aperture is provided with multiple.
Further, described the first water pump and the second water pump are emulsion pump.
Further, described deduster is sack cleaner.
Further, described ash silo is provided with one or more.
A kind of semidry method flue gas processing method, comprises the following steps:
Step 1), by the first water pump, the lime white in digester is transported to absorber inside, and with send into the flue gas that pipe is sent to absorber inside by flue gas and mix;
Step 2), acid ingredient (SO in flue gas
2, SO
3, HCL) react with the alkaline components in lime white, key reaction is: SO
2+ Ca (OH)
2→ CaSO
3+ H
2o;
A small amount of SO
2reaction is: SO
2+ 1/2O
2+ Ca (OH)
2→ CaSO
4+ H
2o;
Trace acidic gas reaction in flue gas is: SO
3+ Ca (OH)
2→ CaSO
4+ H
2o; 2HCl+Ca (OH)
2→ CaCl
2+ 2H
2o;
Oxynitrides reaction in flue gas is: 4NO+4NH
3+ O
2→ 4N
2+ 6H
2o; 2NO
2+ 4NH
3+ O
2→ 3N
2+ 6H
2o;
Step 3), reacted aqueous mixture will enter circulation flow container, and again be sent in absorber by the second water pump, carry out secondary utilization, reacted flue gas enters deduster inside;
Step 4), by deduster to the particulate pollutant in flue gas, and neutralization reactant collects, and is stored in ash silo;
Step 5), through step 4) flue gas after treatment by smoke stack emission to atmosphere.
Compared with prior art, it has following beneficial effect in the present invention: a kind of low cost of the present invention, low water consumption, floor space are little, can avoid ammonia to leak and equipment corrosion, and has the semidry method flue gas processing device of obvious desulfurized effect; The present invention, in the time of work, is delivered to absorber by the first water pump by lime white, and carries out chemical reaction with the flue gas that enters absorber inside; Reacted aqueous mixture enters circulation fluid pipe, and is delivered to absorber by the second water pump, carries out secondary utilization; Reacted flue gas enters deduster; Deduster is to the particulate pollutant in flue gas, and neutralization reactant collects, and is stored in ash silo, and clean flue gas will be by smoke stack emission to atmosphere; The present invention carries out secondary utilization to aqueous mixture, greatly reduces wastewater flow rate and water consumption; The present invention simultaneously adopts semidry method to administer flue gas, has overcome the shortcoming that wet method and dry treatment exist, and has reduced to greatest extent equipment corrosion and energy consumption, has avoided the secondary pollution of ammonia leakage and flue gas simultaneously, has improved the regulation effect of flue gas.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention.
1-absorber; 2-fog-spray nozzle; 3-digestive juice pipe; 4-digester; 5-CaO feed bin; 6-the first water pump; 7-circulation flow container; 8-circulation fluid pipe; 9-the second water pump; 10-flue gas is sent into pipe; 11-smoke discharge pipe; 12-deduster; 13-ash silo; 14-chimney.
The specific embodiment
A kind of semidry method flue gas processing device as shown in Figure 1, comprises absorber 1; Described absorber 1 inside is provided with fog-spray nozzle 2; Described absorber 1 is connected with digester 4 by digestive juice pipe 3; On described digestive juice pipe 3, be provided with the first water pump 6; On described digester 4, be provided with CaO feed bin 5; Described absorber 1 lower end is connected with circulation flow container 7; Described circulation flow container 7 is also connected with absorber 1 by circulation fluid pipe 8; On described circulation fluid pipe 8, be provided with the second water pump 9; On described absorber 1, be also provided with flue gas and send into pipe 10; Described absorber 1 is connected with chimney 14 by smoke discharge pipe 11; On described smoke discharge pipe 11, be provided with deduster 12; Described deduster 12 belows are provided with ash silo 13.
Wherein, on described fog-spray nozzle 2, be provided with aperture; Described aperture is provided with multiple; Described the first water pump 6 and the second water pump 9 are emulsion pump; Described deduster 12 is sack cleaner; Described ash silo 13 is provided with one or more.
A kind of semidry method flue gas processing method, comprises the following steps:
Step 1), by the first water pump, the lime white in digester is transported to absorber inside, and with send into the flue gas that pipe is sent to absorber inside by flue gas and mix;
Step 2), acid ingredient (SO in flue gas
2, SO
3, HCL) react with the alkaline components in lime white, key reaction is: SO
2+ Ca (OH)
2→ CaSO
3+ H
2o;
A small amount of SO
2reaction is: SO
2+ 1/2O
2+ Ca (OH)
2→ CaSO
4+ H
2o;
Trace acidic gas reaction in flue gas is: SO
3+ Ca (OH)
2→ CaSO
4+ H
2o; 2HCl+Ca (OH)
2→ CaCl
2+ 2H
2o;
Oxynitrides reaction in flue gas is: 4NO+4NH
3+ O
2→ 4N
2+ 6H
2o; 2NO
2+ 4NH
a+ O
2→ 3N
2+ 6H
2o;
Step 3), reacted aqueous mixture will enter circulation flow container, and again be sent in absorber by the second water pump, carry out secondary utilization, reacted flue gas enters deduster inside;
Step 4), by deduster to the particulate pollutant in flue gas, and neutralization reactant collects, and is stored in ash silo;
Step 5), through step 4) flue gas after treatment by smoke stack emission to atmosphere.
A kind of low cost of the present invention, low water consumption, floor space are little, can avoid ammonia to leak and equipment corrosion, and have the semidry method flue gas processing device of obvious desulfurized effect; The present invention, in the time of work, is delivered to absorber by the first water pump by lime white, and carries out chemical reaction with the flue gas that enters absorber inside; Reacted aqueous mixture enters circulation fluid pipe, and is delivered to absorber by the second water pump, carries out secondary utilization; Reacted flue gas enters deduster; Deduster is to the particulate pollutant in flue gas, and neutralization reactant collects, and is stored in ash silo, and clean flue gas will be by smoke stack emission to atmosphere; The present invention carries out secondary utilization to aqueous mixture, greatly reduces wastewater flow rate and water consumption; The present invention simultaneously adopts semidry method to administer flue gas, has overcome the shortcoming that wet method and dry treatment exist, and has reduced to greatest extent equipment corrosion and energy consumption, has avoided the secondary pollution of ammonia leakage and flue gas simultaneously, has improved the regulation effect of flue gas.
The above, be only the specific embodiment of the present invention, but protection scope of the present invention is not limited to this, and any variation of expecting without creative work or replacement, within all should being encompassed in protection scope of the present invention.Therefore, protection scope of the present invention should be as the criterion with the protection domain that claims were limited.
Claims (7)
1. a semidry method flue gas processing device, is characterized in that: comprise absorber; Described absorber inside is provided with fog-spray nozzle; Described absorber is connected with digester by digestive juice pipe; On described digestive juice pipe, be provided with the first water pump; On described digester, be provided with CaO feed bin; Described absorber lower end is connected with circulation flow container; Described circulation flow container is also connected with absorber by circulation fluid pipe; On described circulation fluid pipe, be provided with the second water pump; On described absorber, be also provided with flue gas and send into pipe; Described absorber is connected with chimney by smoke discharge pipe; On described smoke discharge pipe, be provided with deduster; Described deduster below is provided with ash silo.
2. semidry method flue gas processing device according to claim 1, is characterized in that: on described fog-spray nozzle, be provided with aperture.
3. semidry method flue gas processing device according to claim 2, is characterized in that: described aperture is provided with multiple.
4. semidry method flue gas processing device according to claim 1, is characterized in that: described the first water pump and the second water pump are emulsion pump.
5. semidry method flue gas processing device according to claim 1, is characterized in that: described deduster is sack cleaner.
6. semidry method flue gas processing device according to claim 1, is characterized in that: described ash silo is provided with one or more.
7. a semidry method flue gas processing method, is characterized in that, comprises the following steps:
Step 1), by the first water pump, the lime white in digester is transported to absorber inside, and with send into the flue gas that pipe is sent to absorber inside by flue gas and mix;
Step 2), acid ingredient (SO in flue gas
2, SO
3, HCL) react with the alkaline components in lime white, key reaction is: SO
2+ Ca (OH)
2→ CaSO
3+ H
2o;
A small amount of SO
2reaction is: SO
2+ 1/2O
2+ Ca (OH)
2→ CaSO
4+ H
2o;
Trace acidic gas reaction in flue gas is: SO
3+ Ca (OH)
2→ CaSO
4+ H
2o; 2HCl+Ca (OH)
2→ CaCl
2+ 2H
2o;
Oxynitrides reaction in flue gas is: 4NO+4NH
3+ O
2→ 4N
2+ 6H
2o; 2NO
2+ 4NH
3+ O
2→ 3N
2+ 6H
2o;
Step 3), reacted aqueous mixture will enter circulation flow container, and again be sent in absorber by the second water pump, carry out secondary utilization, reacted flue gas enters deduster inside;
Step 4), by deduster to the particulate pollutant in flue gas, and neutralization reactant collects, and is stored in ash silo;
Step 5), through step 4) flue gas after treatment by smoke stack emission to atmosphere.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079848.8A CN103816794A (en) | 2014-03-05 | 2014-03-05 | Stack gas treatment device through adopting semi-dry method and treatment method of device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410079848.8A CN103816794A (en) | 2014-03-05 | 2014-03-05 | Stack gas treatment device through adopting semi-dry method and treatment method of device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103816794A true CN103816794A (en) | 2014-05-28 |
Family
ID=50752256
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410079848.8A Pending CN103816794A (en) | 2014-03-05 | 2014-03-05 | Stack gas treatment device through adopting semi-dry method and treatment method of device |
Country Status (1)
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0211458A1 (en) * | 1985-07-20 | 1987-02-25 | Rolf Dr. Graf | Process for removing noxious materials from fumes |
| US5100643A (en) * | 1988-03-02 | 1992-03-31 | Board Of Regents, The University Of Texas System | Processes for removing acid components from gas streams |
| CN201799216U (en) * | 2010-09-19 | 2011-04-20 | 无锡市华星电力环保修造有限公司 | Fixed spraying semi-dry desulfurization device |
| CN102085451A (en) * | 2010-12-17 | 2011-06-08 | 秦皇岛双轮环保科技有限公司 | Desulfuration and dust collection method based on reverse spray type semidry method for flue gas of sintering machine |
| CN103239984A (en) * | 2013-05-15 | 2013-08-14 | 山西平朔煤矸石发电有限责任公司 | Dry-process fine continuous desulfurization device and method for CFB (Circulating Fluidized Bed) boiler |
| CN203725022U (en) * | 2014-03-05 | 2014-07-23 | 青岛新天地固体废物综合处置有限公司 | Device for treating flue gas with semi-dry method |
-
2014
- 2014-03-05 CN CN201410079848.8A patent/CN103816794A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0211458A1 (en) * | 1985-07-20 | 1987-02-25 | Rolf Dr. Graf | Process for removing noxious materials from fumes |
| US5100643A (en) * | 1988-03-02 | 1992-03-31 | Board Of Regents, The University Of Texas System | Processes for removing acid components from gas streams |
| CN201799216U (en) * | 2010-09-19 | 2011-04-20 | 无锡市华星电力环保修造有限公司 | Fixed spraying semi-dry desulfurization device |
| CN102085451A (en) * | 2010-12-17 | 2011-06-08 | 秦皇岛双轮环保科技有限公司 | Desulfuration and dust collection method based on reverse spray type semidry method for flue gas of sintering machine |
| CN103239984A (en) * | 2013-05-15 | 2013-08-14 | 山西平朔煤矸石发电有限责任公司 | Dry-process fine continuous desulfurization device and method for CFB (Circulating Fluidized Bed) boiler |
| CN203725022U (en) * | 2014-03-05 | 2014-07-23 | 青岛新天地固体废物综合处置有限公司 | Device for treating flue gas with semi-dry method |
Non-Patent Citations (2)
| Title |
|---|
| 李水坤: "烟气净化系统在垃圾发电厂的应用", 《科技创业家》 * |
| 马秀珍等: "旋转喷雾半干法烟气脱硫技术的开发和应用", 《山东冶金》 * |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20140528 |
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| RJ01 | Rejection of invention patent application after publication |