CN115212704B - Flue tail gas adjusting system for coal-fired power plant for microalgae cultivation - Google Patents
Flue tail gas adjusting system for coal-fired power plant for microalgae cultivation Download PDFInfo
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- CN115212704B CN115212704B CN202210743376.6A CN202210743376A CN115212704B CN 115212704 B CN115212704 B CN 115212704B CN 202210743376 A CN202210743376 A CN 202210743376A CN 115212704 B CN115212704 B CN 115212704B
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- 239000003546 flue gas Substances 0.000 claims abstract description 155
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims abstract description 153
- 230000001105 regulatory effect Effects 0.000 claims abstract description 62
- 239000007789 gas Substances 0.000 claims abstract description 17
- 238000012544 monitoring process Methods 0.000 claims abstract description 15
- 230000003009 desulfurizing effect Effects 0.000 claims abstract description 4
- 230000003750 conditioning effect Effects 0.000 claims description 6
- 239000000779 smoke Substances 0.000 claims description 6
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 claims description 4
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical class [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 4
- 235000011114 ammonium hydroxide Nutrition 0.000 claims description 4
- 229910002091 carbon monoxide Inorganic materials 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 239000003795 chemical substances by application Substances 0.000 claims 2
- 238000012258 culturing Methods 0.000 abstract description 5
- 230000009467 reduction Effects 0.000 abstract description 5
- 238000004134 energy conservation Methods 0.000 abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 239000003814 drug Substances 0.000 description 7
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 5
- 241000195649 Chlorella <Chlorellales> Species 0.000 description 4
- 241000195493 Cryptophyta Species 0.000 description 4
- 238000002835 absorbance Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000002028 Biomass Substances 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- 238000006477 desulfuration reaction Methods 0.000 description 2
- 230000023556 desulfurization Effects 0.000 description 2
- 239000000428 dust Substances 0.000 description 2
- 239000001963 growth medium Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 206010021033 Hypomenorrhoea Diseases 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003674 animal food additive Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002551 biofuel Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000011081 inoculation Methods 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000009919 sequestration Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/346—Controlling the process
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/30—Controlling by gas-analysis apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M21/00—Bioreactors or fermenters specially adapted for specific uses
- C12M21/02—Photobioreactors
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- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M29/00—Means for introduction, extraction or recirculation of materials, e.g. pumps
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/30—Alkali metal compounds
- B01D2251/304—Alkali metal compounds of sodium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2256/00—Main component in the product gas stream after treatment
- B01D2256/22—Carbon dioxide
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
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Abstract
The invention discloses a flue tail gas regulating system of a coal-fired power plant for microalgae cultivation, which relates to the field of flue gas pretreatment systems and comprises the following components: the flue gas regulating tank is provided with an inlet flue connected with a flue gas exhaust pipeline of the desulfurizing tower and an outlet flue connected with the microalgae runway tank; the first flue gas regulating device is used for regulating the flue gas temperature and the flue gas inlet flow in the inlet flue; the second flue gas regulating device is used for regulating the flue gas temperature and the flue gas flow in the outlet flue; the dosing device is arranged on the flue gas regulating tank and is used for regulating the pH of the flue gas; the flue gas monitoring system is arranged on the flue gas regulating tank and is used for monitoring the components, the content and the pH value of the flue gas in real time. The invention can accurately control the flow and the pH of the flue tail gas, reduce the temperature of the flue gas, and the flue gas treated by the system can be directly used for culturing microalgae, so that the yield of the microalgae is improved, the microalgae culturing cost is reduced, and the requirements of green production, energy conservation and emission reduction are met.
Description
Technical Field
The invention relates to the field of flue gas pretreatment systems, in particular to a flue gas regulating system for a coal-fired power plant for microalgae cultivation.
Background
The coal and electricity industry is realized by China due to huge carbon dioxide emissionCritical core industry of "two carbon" target, strictly controlling and reducing CO of coal-fired power plant 2 Discharge is urgent. The microalgae carbon fixation technology is CO with the advantages of economical feasibility, environmental friendliness and sustainable development 2 Fixing technology. The microalgae can grow fast and has high carbon fixation efficiency, the microalgae can be further processed and converted into biofuel, chemicals, feed additives and the like, and the CO can be obviously reduced by utilizing the tail gas of the coal-fired power plant to cultivate the microalgae 2 Emissions, and also has a significant commercial added value. However, the existing emission reduction coupling microalgae carbon sequestration technology of coal-fired power plants is mainly focused on the aspects of tolerance algae seed selection, microalgae culture process optimization and the like, and the related application of adjusting the flue gas parameters for microalgae culture is less. According to the emission index of the existing ultralow-emission coal-fired power plant atmospheric pollutants, smoke dust and SO in the flue tail gas subjected to denitration, dust removal and desulfurization treatment 2 And NO x The discharge concentration can be respectively reduced to 10mg/m 3 、35mg/m 3 、50mg/m 3 In the following, the heavy metal content is extremely low (Hg < 0.03 mg/m) 3 ) Has less influence on the normal growth of microalgae, but has higher flue tail gas temperature (about 50 ℃), lower pH (less than 6), fluctuating flue gas flow and CO 2 The content can also obviously influence the carbon fixation efficiency of microalgae, and is unfavorable for the growth of the microalgae. Therefore, the flue tail gas needs to be correspondingly pretreated, and various indexes are regulated to meet the growth conditions of microalgae, so that the emission reduction efficiency is improved.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art and provides a flue tail gas regulating system for a coal-fired power plant for microalgae cultivation.
The technical scheme of the invention is as follows:
a flue gas conditioning system for a coal-fired power plant for microalgae cultivation, comprising:
the flue gas adjusting pool is provided with an inlet flue connected with a flue gas exhaust pipeline of the desulfurizing tower and an outlet flue connected with the microalgae runway pool;
the first flue gas adjusting device is arranged on the inlet flue and is used for adjusting the flue gas temperature and the flue gas inlet flow in the inlet flue;
the second flue gas regulating device is arranged on the outlet flue and is used for regulating the flue gas temperature and the flue gas flow in the outlet flue;
the dosing device is arranged on the flue gas regulating tank and is used for regulating the pH of the flue gas;
the flue gas monitoring system is arranged on the flue gas regulating tank and is used for monitoring the components, the content and the pH value of the flue gas in real time.
As a preferable scheme of the invention, the first flue gas regulating device comprises an inlet main exhaust fan, an inlet flue gas flow regulating valve, a flue gas-air heat exchanger and an inlet flue gas flowmeter which are sequentially arranged on the inlet flue along the flue gas inlet direction.
As a preferable scheme of the invention, the second flue gas regulating device comprises an outlet exhaust fan, an outlet flue gas flow regulating valve, an outlet flue gas flowmeter and an outlet flue gas temperature monitor which are sequentially arranged on the outlet flue along the flue gas outlet direction.
As a preferable scheme of the invention, the dosing device comprises a first dosing tank and a second dosing tank, and a first dosing pump and a second dosing pump are respectively arranged on a pipeline communicated with the smoke regulating tank.
As a preferable scheme of the invention, the medicament in the first medicament adding tank is saturated NaCl solution.
As a preferable scheme of the invention, the traditional Chinese medicine preparation in the second medicine adding tank is concentrated ammonia water.
As a preferable scheme of the invention, the system also comprises a PID automatic control system, and the PID automatic control system can control the sizes of an inlet flue gas flow regulating valve and an outlet flue gas regulating valve according to the flue gas flow collected by the inlet flue gas flowmeter and the outlet flue gas flowmeter; the PID automatic control system can also adjust the rotating speeds of the first dosing pump and the second dosing pump according to the pH value and the components of the smoke collected by the smoke monitoring system, so as to control the dosing amount.
As a preferred embodiment of the present invention, the outlet smokeThe flue gas temperature of the flue is 25-35 ℃, the pH of the flue gas is 7.0-9.0, and the flow rate of the flue gas is 50-100m 3 /h，CO 2 The volume fraction is 12-18%.
The beneficial effects of the invention are as follows: the invention can accurately control the flow and the pH of the flue tail gas, reduce the temperature of the flue gas, and the flue gas treated by the system can be directly used for culturing microalgae, so that the yield of the microalgae is improved, the microalgae culturing cost is reduced, and the requirements of green production, energy conservation and emission reduction are met.
Drawings
FIG. 1 is a schematic view of a preferred embodiment of the present invention;
1-inlet main exhaust fan, 2-inlet flue gas flow regulating valve, 3-flue gas-air heat exchanger, 4-inlet flue gas flowmeter, 5-flue gas regulating tank, 6-flue gas monitoring system, 7-first dosing tank, 8-first dosing pump, 9-second dosing tank, 10-second dosing pump, 11-outlet main exhaust fan, 12-outlet flue gas flow regulating valve, 13-outlet flue gas flowmeter, 14-outlet flue gas temperature monitor, 15-microalgae runway tank.
Detailed Description
Referring to fig. 1, a preferred embodiment of the present invention:
a flue gas conditioning system for a coal-fired power plant for microalgae cultivation, comprising:
the flue gas regulating tank 5 is provided with an inlet flue connected with a flue gas exhaust pipeline of the desulfurizing tower and an outlet flue connected with the microalgae runway tank 15;
the first flue gas adjusting device is arranged on the inlet flue and is used for adjusting the flue gas temperature and the flue gas inlet flow in the inlet flue;
the second flue gas regulating device is arranged on the outlet flue and is used for regulating the flue gas temperature and the flue gas flow in the outlet flue;
the dosing device is arranged on the flue gas regulating tank 5 and is used for regulating the pH of the flue gas;
the flue gas monitoring system 6 is arranged on the flue gas regulating tank 5, and the flue gas monitoring system 6 is used for monitoring the components, the content and the pH value of the flue gas in real time.
The embodiment can accurately control the flow and the pH of the flue tail gas, reduce the temperature of the flue gas, and the flue gas treated by the system can be directly used for culturing microalgae.
As a preferred embodiment of the invention, it may also have the following additional technical features:
the first flue gas adjusting device comprises an inlet main exhaust fan 1, an inlet flue gas flow adjusting valve 2, a flue gas-air heat exchanger 3 and an inlet flue gas flowmeter 4 which are sequentially arranged on an inlet flue along the flue gas inlet direction.
The second flue gas adjusting device comprises an outlet exhaust fan 11, an outlet flue gas flow adjusting valve 12, an outlet flue gas flowmeter 13 and an outlet flue gas temperature monitor 14 which are sequentially arranged on the outlet flue along the flue gas outlet direction.
The dosing device comprises a first dosing tank 7 and a second dosing tank 9, and a first dosing pump 8 and a second dosing pump 10 are respectively arranged on the communication pipeline between the first dosing tank 7 and the second dosing tank 9 and the flue gas regulating tank 5.
The medicament in the first medicament adding tank 7 is saturated NaCl solution.
The medicament in the second dosing tank 9 is 22-25% concentrated ammonia water.
The system also comprises a PID automatic control system, and the PID automatic control system can control the sizes of the inlet flue gas flow regulating valve 2 and the outlet flue gas regulating valve 11 according to the flue gas flow collected by the inlet flue gas flowmeter 4 and the outlet flue gas flowmeter 13; the PID automatic control system can also adjust the rotational speeds of the first dosing pump 8 and the second dosing pump 10 according to the pH and the composition of the flue gas collected by the flue gas monitoring system 6.
The temperature of the flue gas of the outlet flue is 25-35 ℃, the pH of the flue gas is 7.0-9.0, and the flow rate of the flue gas is 50-100m 3 /h，CO 2 The volume fraction is 12-18%.
The specific growth rate of chlorella cells was measured by the turbidity method in the following examples. Samples were taken every 48 hours, and the absorbance of the algae solution at 680nm was measured by a spectrophotometer. The formula: mu= (lnN) T -lnN 0 ) and/T. Wherein μ is the specific growth rate, N 0 For the absorbance value of the algae liquid at the inoculation,N T the absorbance of the algae liquid after T days of culture. Thus representing the overall growth of chlorella over a period of time.
Example 1
SO in desulfurization flue gas of coal-fired power plant 2 At a concentration of about 10mg/m 3 NOx content 30mg/m 3 Smoke content 5mg/m 3 Mercury and its compound content 0.003mg/m 3 ，CO 2 The content is randomly changed by load fluctuation (volume fraction: 13-16%), the flue gas temperature is 50 ℃, and the pH is 5.8. The inlet main exhaust fan 1 pumps the desulfurized flue gas into the inlet flue, and the desulfurized flue gas sequentially passes through the inlet flue gas flow regulating valve 2 and the flue gas-air heat exchanger 3 and then enters the flue gas regulating tank 5, and SO is carried out in the flue gas regulating tank 5 2 、SO 3 Acid gases such as NOx and the like are absorbed by ammonia water and saturated NaCl solution, the continuous flue gas monitoring system 6CEMS transmits precipitated flue gas data to the second flue gas regulating device, the PID system starts the outlet main exhaust fan 11 after comparing feedback data with a set value, and flue gas from the flue gas regulating tank 5 sequentially passes through the outlet flue gas flow regulating valve 12, the outlet flue gas flowmeter 13 and the outlet flue gas temperature monitor 14 and then passes through the branch pipelines to be introduced into the bottom of the open microalgae photoreaction runway tank. The set value of the outlet flue gas is SO 2 ＜5mg/m 3 ，NOx＜5mg/m 3 ，CO 2 Volume fraction: 12-18%, the flue gas temperature is 25-35 ℃, and the pH is 7-9.
The open microalgae photoreaction runway pool takes secondary effluent treated by a sewage treatment plant as a culture medium, and common chlorella is inoculated into the culture medium, wherein the initial grafting density is 6.0 multiplied by 10 7 cfu/ml, light period of 12h, culture temperature of 30deg.C, pH of 7.0. The flue gas is introduced into a microalgae photoreaction runway pool for 7 days, the biomass is 1.5g/L (dry weight), and the specific growth rate can reach 0.27. Other conditions were the same, and chlorella cultivated in an air atmosphere was used as a control experiment, and the biomass produced under the conditions was 0.9g/L (dry weight) and the specific growth rate was 0.18.
The invention can be shown that the flue tail gas of the coal-fired power plant is more favorable for growth and propagation of microalgae after being treated by the flue gas regulating tank, so that the yield of microalgae is greatly improved, the microalgae cultivation cost is reduced, and the requirements of green production, energy conservation and emission reduction are met.
The above examples merely illustrate specific embodiments of the invention, which are described in more detail and are not to be construed as limiting the scope of the invention. It should be noted that variations and modifications could be made by those skilled in the art without departing from the spirit of the invention, which would fall within the scope of the invention.
Claims (8)
1. A flue gas conditioning system for a coal-fired power plant for microalgae cultivation, comprising:
the flue gas regulating tank (5) is provided with an inlet flue connected with a flue gas exhaust pipeline of the desulfurizing tower and an outlet flue connected with the microalgae runway tank (15);
the first flue gas adjusting device is arranged on the inlet flue and is used for adjusting the flue gas temperature and the flue gas inlet flow in the inlet flue;
the second flue gas regulating device is arranged on the outlet flue and is used for regulating the flue gas temperature and the flue gas flow in the outlet flue;
the dosing device is arranged on the flue gas regulating tank (5) and is used for regulating the pH of the flue gas;
the flue gas monitoring system (6) is arranged on the flue gas regulating tank (5), and the flue gas monitoring system (6) is used for monitoring the components, the content and the pH value of the flue gas in real time;
after being regulated by the flue tail gas regulating system, the temperature of the outlet flue gas is controlled to be 25-35 ℃, the pH value of the flue gas is controlled to be 7.0-9.0, and CO is controlled to be 2 The volume fraction is 12-18%.
2. The flue tail gas regulating system for the coal-fired power plant for microalgae cultivation according to claim 1, wherein the first flue gas regulating device comprises an inlet main exhaust fan (1), an inlet flue gas flow regulating valve (2), a flue gas-air heat exchanger (3) and an inlet flue gas flowmeter (4) which are sequentially arranged on an inlet flue along the flue gas inlet direction.
3. The flue tail gas regulating system for the coal-fired power plant for microalgae cultivation according to claim 1, wherein the second flue gas regulating device comprises an outlet exhaust fan (11), an outlet flue gas flow regulating valve (12), an outlet flue gas flowmeter (13) and an outlet flue gas temperature monitor (14) which are sequentially arranged on an outlet flue along the direction of smoke outlet.
4. The flue tail gas regulating system for the coal-fired power plant for microalgae cultivation according to claim 1, wherein the dosing device comprises a first dosing tank (7) and a second dosing tank (9), and a first dosing pump (8) and a second dosing pump (10) are respectively arranged on communication pipelines of the first dosing tank (7) and the second dosing tank (9) and the flue gas regulating tank (5).
5. The flue gas conditioning system for a coal-fired power plant for microalgae cultivation according to claim 4, wherein the agent in the first dosing tank (7) is saturated NaCl solution.
6. The flue gas conditioning system for a coal-fired power plant for microalgae cultivation according to claim 4, wherein the agent in the second dosing tank (9) is concentrated ammonia water.
7. The flue gas regulating system for the coal-fired power plant for microalgae cultivation according to claim 1, further comprising a PID automatic control system, wherein the PID automatic control system can control the sizes of the inlet flue gas flow regulating valve (2) and the outlet flue gas flow regulating valve (12) according to the flue gas flow collected by the inlet flue gas flow meter (4) and the outlet flue gas flow meter (13); the PID automatic control system can also adjust the rotating speeds of the first dosing pump (8) and the second dosing pump (10) according to the pH and the components of the flue gas collected by the flue gas monitoring system (6).
8. The flue tail gas conditioning system for a coal-fired power plant for microalgae cultivation according to claim 7Characterized in that the temperature of the flue gas of the outlet flue is 25-35 ℃, the pH of the flue gas is 7.0-9.0, and the flow rate of the flue gas is 50-100m 3 /h，CO 2 The volume fraction is 12-18%.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5326277A (en) * | 1976-08-24 | 1978-03-10 | Ishikawajima Harima Heavy Ind Co Ltd | Removing method of sulfur oxides and nitrogen oxides |
| CN101816885A (en) * | 2010-03-26 | 2010-09-01 | 康仁 | Method for desulfurization and denitration by wet method |
| CN102008930A (en) * | 2010-11-12 | 2011-04-13 | 同济大学 | Photo-biological reaction device for removing carbon dioxide from flue gas |
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