CN112642262A - Thermal power plant waste gas adsorption treatment method - Google Patents
Thermal power plant waste gas adsorption treatment method Download PDFInfo
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- CN112642262A CN112642262A CN202011581345.2A CN202011581345A CN112642262A CN 112642262 A CN112642262 A CN 112642262A CN 202011581345 A CN202011581345 A CN 202011581345A CN 112642262 A CN112642262 A CN 112642262A
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- waste gas
- power plant
- thermal power
- activated carbon
- collecting
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- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000001179 sorption measurement Methods 0.000 title claims abstract description 23
- 239000007789 gas Substances 0.000 title claims description 29
- 239000010908 plant waste Substances 0.000 title description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 69
- 239000002912 waste gas Substances 0.000 claims abstract description 52
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000002245 particle Substances 0.000 claims abstract description 10
- 238000001035 drying Methods 0.000 claims abstract description 8
- 238000002791 soaking Methods 0.000 claims abstract description 7
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910017604 nitric acid Inorganic materials 0.000 claims abstract description 6
- 239000012716 precipitator Substances 0.000 claims abstract description 5
- 150000004767 nitrides Chemical class 0.000 claims abstract description 4
- 238000009210 therapy by ultrasound Methods 0.000 claims abstract description 4
- 150000003568 thioethers Chemical class 0.000 claims abstract description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 229910021586 Nickel(II) chloride Inorganic materials 0.000 claims description 4
- QMMRZOWCJAIUJA-UHFFFAOYSA-L nickel dichloride Chemical compound Cl[Ni]Cl QMMRZOWCJAIUJA-UHFFFAOYSA-L 0.000 claims description 4
- 229910021578 Iron(III) chloride Inorganic materials 0.000 claims description 3
- GVPFVAHMJGGAJG-UHFFFAOYSA-L cobalt dichloride Chemical compound [Cl-].[Cl-].[Co+2] GVPFVAHMJGGAJG-UHFFFAOYSA-L 0.000 claims description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000010521 absorption reaction Methods 0.000 claims 1
- 230000000274 adsorptive effect Effects 0.000 claims 1
- 238000003795 desorption Methods 0.000 claims 1
- 239000002699 waste material Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000012670 alkaline solution Substances 0.000 description 2
- 238000000975 co-precipitation Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 229910001415 sodium ion Inorganic materials 0.000 description 2
- 229910052717 sulfur Inorganic materials 0.000 description 2
- 239000011593 sulfur Substances 0.000 description 2
- VEQPNABPJHWNSG-UHFFFAOYSA-N Nickel(2+) Chemical compound [Ni+2] VEQPNABPJHWNSG-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910001453 nickel ion Inorganic materials 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
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Classifications
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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
- B01D53/02—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 by adsorption, e.g. preparative gas chromatography
- B01D53/06—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 by adsorption, e.g. preparative gas chromatography with moving adsorbents, e.g. rotating beds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3416—Regenerating or reactivating of sorbents or filter aids comprising free carbon, e.g. activated carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/3441—Regeneration or reactivation by electric current, ultrasound or irradiation, e.g. electromagnetic radiation such as X-rays, UV, light, microwaves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J20/00—Solid sorbent compositions or filter aid compositions; Sorbents for chromatography; Processes for preparing, regenerating or reactivating thereof
- B01J20/30—Processes for preparing, regenerating, or reactivating
- B01J20/34—Regenerating or reactivating
- B01J20/345—Regenerating or reactivating using a particular desorbing compound or mixture
- B01J20/3475—Regenerating or reactivating using a particular desorbing compound or mixture in the liquid phase
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/30—Sulfur compounds
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/40—Nitrogen compounds
-
- 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
Abstract
The invention discloses a waste gas adsorption treatment method for a thermal power plant, which belongs to the technical field of the thermal power plant and comprises the following steps: establishing a waste gas collecting pipeline for collecting waste gas in the thermal power plant; guiding the collected waste gas into an adsorption box, and placing activated carbon particles in the adsorption box; adsorbing nitrides and sulfides in the waste gas by using the activated carbon, and collecting the adsorbed activated carbon; soaking the collected active carbon in alkaline liquid, and carrying out ultrasonic treatment; drying and collecting the soaked active carbon for reuse; collecting the soaked alkaline liquid, adding a precipitator, drying and collecting sulfuric acid and nitric acid, and can be used industrially; the method covers the whole thermal power plant for waste gas treatment, improves the waste gas collection efficiency, realizes the reutilization of the activated carbon, and reduces the cost of the whole waste gas adsorption treatment system.
Description
Technical Field
The invention belongs to the technical field of thermal power plants, and particularly relates to a thermal power plant waste gas adsorption treatment method.
Background
A boiler of a thermal power plant, also called a station boiler, refers to a medium-large boiler providing steam with specified quantity and quality to a steam turbine in a power plant, one of main thermal equipment of the thermal power plant is often matched with a turbo generator set with certain capacity and is mainly used for power generation, but can also be used for external heat supply in some special occasions, generally the evaporation capacity is larger, the steam parameter is very high, a whole set of auxiliary equipment is needed, a chamber combustion furnace chamber is needed to be configured, a forced ventilation mode is adopted, can burn various fuels, has more complex structure and higher efficiency, and the majority can reach about 85 to 93 percent, there are considerable requirements on the level of management and mechanization of the operation, as well as on the automatic control techniques, which, when the boiler is operating, it generates a large amount of exhaust gas, and if it is not treated, it may cause environmental damage, but the conventional treatment apparatus is not perfect in terms of treatment method.
Disclosure of Invention
The invention aims to provide a waste gas adsorption treatment method for a thermal power plant, which covers the whole thermal power plant for waste gas treatment, improves the waste gas collection efficiency, realizes the reutilization of activated carbon, and reduces the cost of the whole waste gas adsorption treatment system.
In order to achieve the purpose, the invention provides the following technical scheme: a thermal power plant waste gas adsorption treatment method comprises the following steps:
s1, establishing a waste gas collecting pipeline to collect waste gas in the thermal power plant;
s2, introducing the collected waste gas into an adsorption box, and placing activated carbon particles in the adsorption box;
s3, adsorbing nitrides and sulfides in the waste gas through the activated carbon, and collecting the adsorbed activated carbon;
s4, soaking the collected activated carbon in alkaline liquid, and carrying out ultrasonic treatment;
s5, drying, collecting and soaking the activated carbon for reuse;
s6, collecting the soaked alkaline liquid, adding a precipitator, drying and collecting sulfuric acid and nitric acid, wherein the method can be used industrially.
Preferably, in step S1, the exhaust gas collecting pipes are disposed in any area inside the thermal power plant, the thermal power plant is divided into a plurality of equal-area areas, a gas detector is disposed inside each area, the gas concentration is recorded, and different numbers of exhaust gas collecting pipes are disposed according to different gas concentrations.
Preferably, each waste gas collecting pipeline is connected with an air pump, and all waste gas collecting pipelines in the same area are connected with only one air pump.
Preferably, a bearing box is placed inside the adsorption box, two ends of the bearing box are connected with a rotation driving device, and activated carbon particles are placed inside the bearing box.
Preferably, the alkaline liquid in step S4 is sodium hydroxide, and the concentration thereof is 25 mol/L.
Preferably, the ultrasonic time in the step S4 is 6-8 h.
Preferably, the precipitant in step S6 includes one of nickel chloride, cobalt chloride and ferric chloride.
The invention has the beneficial effects that:
1. this thermal power plant's waste gas adsorbs processing method, any region in thermal power plant's inside through the waste gas collecting pipe setting, divide thermal power plant into a plurality of equal area regions, every regional inside gas detector of placing simultaneously, record gas concentration, according to gas concentration's difference, set up the waste gas collecting pipe of different quantity, fully absorb the inside waste gas of thermal power plant, the quantity difference that carries out the waste gas collecting pipe simultaneously according to gas concentration difference is placed, distinguish in high concentration, prevent that waste gas from flowing when collecting, adopt a plurality of collecting pipe to improve the collection completeness of waste gas, improve collection efficiency simultaneously.
2. According to the method for adsorbing and treating the waste gas of the thermal power plant, the activated carbon is collected to remove sulfur and nitrogen after being adsorbed, so that the activated carbon can be recycled, and simultaneously nitric acid and sulfuric acid required by industry can be collected, and the cost of the whole waste gas adsorption treatment system is reduced.
3. According to the method for adsorbing and treating the waste gas of the thermal power plant, the alkaline solution for cleaning the activated carbon is collected, metal elements are separated out through the coprecipitation plate, the alkaline solution is recovered, and resources are fully utilized.
Drawings
FIG. 1 is a schematic flow chart of steps of a method for adsorbing and treating waste gas of a thermal power plant according to the present invention.
Detailed Description
In order to further understand the contents, features and effects of the present invention, the following embodiments are illustrated and described in detail with reference to the accompanying drawings.
Referring to fig. 1, a method for adsorbing and treating exhaust gas from a thermal power plant according to an embodiment of the present invention will be described in detail with reference to the accompanying drawings.
The method for adsorbing and treating the waste gas of the thermal power plant comprises the following steps:
s1, establishing a waste gas collecting pipeline to collect waste gas in the thermal power plant;
s2, introducing the collected waste gas into an adsorption box, and placing activated carbon particles in the adsorption box;
s3, adsorbing nitrides and sulfides in the waste gas through the activated carbon, and collecting the adsorbed activated carbon;
s4, soaking the collected activated carbon in alkaline liquid, and carrying out ultrasonic treatment;
s5, drying, collecting and soaking the activated carbon for reuse;
s6, collecting the soaked alkaline liquid, adding a precipitator, drying and collecting sulfuric acid and nitric acid, wherein the method can be used industrially.
Specifically, in step S1, the exhaust gas collecting pipes are disposed in any area inside the thermal power plant, the thermal power plant is divided into a plurality of equal-area areas, meanwhile, a gas detector is disposed inside each area, the gas concentration is recorded, different numbers of exhaust gas collecting pipes are disposed according to the difference of the gas concentration, and the gas concentration is greater than 2.5mol/m2When the number of the waste gas collecting pipes is less than 0.5/square meter, the waste gas collecting pipes are arranged in each area.
Specifically, the waste gas collecting pipes are all connected with air pumps, and all the waste gas collecting pipes in the same area are only connected with one air pump, and when waste gas is collected, all the air pumps in the thermal power plant are opened simultaneously.
The adsorption box is characterized in that a bearing box is placed inside the adsorption box, the two ends of the bearing box are connected with a rotation driving device, activated carbon particles are placed inside the bearing box, when waste gas enters the adsorption box through a waste gas collecting pipeline, the rotation driving device is opened, the activated carbon particles are driven to rotate, the activated carbon particles are fully contacted with the waste gas, the contact area is increased, the activated carbon adsorption rate is improved, and the activated carbon particles are filled into each hole of the activated carbon.
Specifically, in step S4, the alkaline liquid is sodium hydroxide with a concentration of 25 mol/L.
Specifically, in the step S4, the ultrasonic time is 6-8h, and the ultrasonic instrument is a common ultrasonic instrument.
Specifically, the precipitant in step S6 includes one of nickel chloride, cobalt chloride, and ferric chloride.
In the embodiment, nickel chloride is used as a precipitator and added into acid liquor after active carbon is soaked, nickel ions and metal sodium ions in alkaline liquid are subjected to coprecipitation, sodium ions are recovered, and sulfur and nitrogen in the column are separated.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. The method for adsorbing and treating the waste gas of the thermal power plant is characterized by comprising the following steps of:
s1, establishing a waste gas collecting pipeline to collect waste gas in the thermal power plant;
s2, introducing the collected waste gas into an adsorption box, and placing activated carbon particles in the adsorption box;
s3, adsorbing nitrides and sulfides in the waste gas through the activated carbon, and collecting the adsorbed activated carbon;
s4, soaking the collected activated carbon in alkaline liquid, and carrying out ultrasonic treatment;
s5, drying, collecting and soaking the activated carbon for reuse;
s6, collecting the soaked alkaline liquid, adding a precipitator, drying and collecting sulfuric acid and nitric acid, wherein the method can be used industrially.
(the principle of the activated carbon collection and reuse method is different from that in the patent CN102179129B, CN102179129B adopts nitrogen desorption, and the absorption method is used for reusing the activated carbon, so that nitric acid and sulfuric acid required by industry can be obtained, and the utilization rate of waste resources is high).
2. The method for adsorbing and treating the exhaust gas of the thermal power plant according to claim 1, wherein in step S1, the exhaust gas collecting pipes are arranged in any region inside the thermal power plant, the thermal power plant is divided into a plurality of regions with equal area, a gas detector is arranged inside each region, the gas concentration is recorded, and different numbers of exhaust gas collecting pipes are arranged according to the difference of the gas concentration.
3. The method for adsorbing and treating the waste gas of the thermal power plant according to claim 2, wherein each waste gas collecting pipeline is connected with an air pump, and only one air pump is connected with all waste gas collecting pipelines in the same region.
4. The method for adsorbing and treating the waste gas of the thermal power plant according to claim 1, wherein a bearing box is placed inside the adsorption box, two ends of the bearing box are connected with a rotation driving device, and activated carbon particles are placed inside the bearing box.
5. The method for adsorbing and treating exhaust gas of a thermal power plant according to claim 1, wherein the alkaline liquid in step S4 is sodium hydroxide with a concentration of 25 mol/L.
6. The method for adsorbing and treating the waste gas of the thermal power plant according to claim 1, wherein the ultrasonic time in the step S4 is 6-8 h.
7. The method for adsorptive treatment of exhaust gas from a thermal power plant according to claim 1, wherein said precipitant comprises one of nickel chloride, cobalt chloride and ferric chloride in step S6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011581345.2A CN112642262A (en) | 2020-12-28 | 2020-12-28 | Thermal power plant waste gas adsorption treatment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011581345.2A CN112642262A (en) | 2020-12-28 | 2020-12-28 | Thermal power plant waste gas adsorption treatment method |
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| CN112642262A true CN112642262A (en) | 2021-04-13 |
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| CN202011581345.2A Pending CN112642262A (en) | 2020-12-28 | 2020-12-28 | Thermal power plant waste gas adsorption treatment method |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060100090A1 (en) * | 2004-11-10 | 2006-05-11 | Industrial Technology Research Institute | Method and apparatus for processing inorganic acidic gas |
| JP2016163864A (en) * | 2015-03-06 | 2016-09-08 | Ｊｘ金属株式会社 | Reactivation method of activated carbon and recovery method of gold |
| CN110124507A (en) * | 2018-02-02 | 2019-08-16 | 中冶长天国际工程有限责任公司 | A kind of method and device thereof of multi-pollutant flue gas cleaning treatment |
| CN209934392U (en) * | 2019-04-27 | 2020-01-14 | 深圳市点金贵金属精炼有限公司 | Active carbon adsorption tower |
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| CN210645537U (en) * | 2019-06-11 | 2020-06-02 | 王馗 | Exhaust treatment device of thermal power plant |
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-
2020
- 2020-12-28 CN CN202011581345.2A patent/CN112642262A/en active Pending
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