CN111085229A - Cocatalyst for reducing and denitrifying ammonia gas in coal-fired flue gas - Google Patents
Cocatalyst for reducing and denitrifying ammonia gas in coal-fired flue gas Download PDFInfo
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- CN111085229A CN111085229A CN201811240282.7A CN201811240282A CN111085229A CN 111085229 A CN111085229 A CN 111085229A CN 201811240282 A CN201811240282 A CN 201811240282A CN 111085229 A CN111085229 A CN 111085229A
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- 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
- B01J27/00—Catalysts comprising the elements or compounds of halogens, sulfur, selenium, tellurium, phosphorus or nitrogen; Catalysts comprising carbon compounds
- B01J27/20—Carbon compounds
- B01J27/232—Carbonates
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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
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8634—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- 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
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The invention discloses a cocatalyst for reducing and denitrating ammonia gas in coal-fired flue gas, which is prepared from the following components in parts by weight: ammonia (concentration 25%): 25-40ml, synthetic ammonia: 500g-900g, distilled water: 400-800ml, sodium hydroxide (NaOH): 18-28ml, milk of lime (Ca (OH) 2): 25-35g/mol, calcium carbonate (CaCO 3): 40-60g, sodium carbonate (Na 2CO 3): 30-45g of dilute nitric acid (HNO 3) (concentration 68 percent) 25-40ml of nitric acid, 15-35ml of concentrated nitric acid (concentration 98 percent), wherein the content of the synthetic ammonia is not more than 900g, the content of the sodium hydroxide is not more than 28ml, the content of the calcium carbonate is not more than 60g, and the content of the dilute nitric acid is not more than 40 ml. The invention has the beneficial effects that: the catalyst promoter for reducing and denitrating the ammonia gas in the coal-fired flue gas is prepared by properly proportioning and adjusting ammonia water, synthetic ammonia and sodium hydroxide and matching with calcium carbonate and sodium carbonate to play a catalytic role.
Description
Technical Field
The invention relates to a cocatalyst, in particular to a cocatalyst for reducing and denitrating ammonia gas in coal-fired flue gas.
Background
The cocatalyst is a substance which has no or little activity but can change partial properties of the catalyst, such as chemical composition, ionic valence, acidity and alkalinity, surface structure, grain size and the like, so that the activity, selectivity, antitoxicity or stability of the catalyst can be improved, and the cocatalyst is often classified into ① structural type cocatalyst, modulation type cocatalyst and poisoning type cocatalyst according to the functions of the cocatalyst.
The existing cocatalyst has low purity and poor cocatalyst effect.
Disclosure of Invention
The invention aims to provide a cocatalyst for reducing and denitrating ammonia gas in coal-fired flue gas, which aims to solve the problems in the background art.
In order to solve the technical problems, the invention provides a cocatalyst for reducing and denitrating ammonia gas in coal-fired flue gas, which comprises the following components in percentage by weight: ammonia (concentration 25%): 25-40ml, synthetic ammonia: 500g-900g, distilled water: 400-800ml, sodium hydroxide (NaOH): 18-28ml, milk of lime (Ca (OH) 2): 25-35g/mol, calcium carbonate (CaCO 3): 40-60g, sodium carbonate (Na 2CO 3): 30-45g of dilute nitric acid (HNO 3) (with the concentration of 68 percent) 25-40ml of nitric acid, and 15-35ml of concentrated nitric acid (with the concentration of 98 percent).
The concentration of the ammonia water is 25%, the content of the synthetic ammonia is not more than 900g, the content of the distilled water is not more than 800ml, the content of the sodium hydroxide is not more than 28ml, the content of the lime milk is not more than 35g/mol, the content of the calcium carbonate is not more than 60g, the content of the sodium carbonate is not more than 45g, the content of the dilute nitric acid is not more than 40ml, and the content of the concentrated nitric acid is not more than 35 ml.
The preparation method of the cocatalyst comprises the following steps:
the first step is as follows: firstly, enough ammonia water (with the concentration of 25 percent), synthetic ammonia, distilled water, sodium hydroxide (NaOH), lime cream (Ca (OH) 2), calcium carbonate (CaCO 3) and sodium carbonate are prepared, firstly, oxygen is injected into coal to a small extent so as to form the condition of low-oxygen combustion under the condition of coal burning, then 30ml of ammonia water with the concentration of 25 percent is injected into a coal burning furnace, and the temperature is increased to 700 to 800 ℃ and then heated for 1.5 hours.
The second step is that: then adding 25ml of sodium hydroxide (NaOH) into the coal-fired furnace filled with 25% ammonia water, heating for 1.5 hours until the sodium hydroxide (NaOH) is completely dissolved in the coal powder, and then adding 700g of synthetic ammonia according to the proportion of 2: 3 placing the mixture in a furnace containing coal, and keeping the mixture at the temperature of 1500-1800 ℃ for 4 hours.
The third step: putting 30g/mol lime milk Ca (OH) into a reaction bottle, continuously heating to form liquid, and then putting the lime milk, calcium carbonate CaCO3 and sodium carbonate Na2CO3 into a glass according to the proportion of 2: 1: 3, slowly pouring the mixture into a reaction bottle, continuously stirring the mixture for 20 minutes, standing the mixture for 2 hours, preserving the temperature of the mixture for 3 to 6 hours at 1700 to 2000 ℃, and cooling the mixture to obtain a primary cocatalyst.
The fourth step: 30ml of dilute nitric acid with the concentration of 68 percent is firstly put into a reaction bottle with the primary catalyst promoter product, the reaction bottle is kept stand for 20 minutes, 25ml of concentrated nitric acid with the concentration of 98 percent is then put into the reaction bottle, the mixture is separated by evaporation crystallization and kept stand for 4 hours, 500ml of distilled water is used for cleaning the crystal, 10ml of sodium carbonate is added, the temperature is kept between 850 ℃ and 1100 ℃, a glass cup is used for continuously stirring and mixing, the temperature is kept for 3 hours, then materialization treatment is carried out, and cooling is carried out to obtain the catalyst promoter for the coal-fired flue gas reduction denitration according to the period.
The invention has the beneficial effects that: the catalyst promoter for reducing and denitrating the ammonia gas in the coal-fired flue gas is used for preparing a novel catalyst promoter by properly proportioning and adjusting ammonia water, synthetic ammonia and sodium hydroxide and matching with certain calcium carbonate and sodium carbonate to play a catalytic role, so that the ammonia gas polluting the environment generated by the coal-fired flue gas is denitrated, the purity of the prepared catalyst promoter is high, and the catalyst promoter effect is obviously improved.
Detailed Description
The following further description is provided in conjunction with the detailed description, but the detailed description below should not be construed as limiting the invention. Various modifications and variations obvious to those skilled in the art, which can be made on the basis of the present invention, should be within the scope of the present invention.
Example 1:
the invention provides a cocatalyst for reducing and denitrating ammonia gas in coal-fired flue gas, which comprises the following components in percentage by weight: ammonia (concentration 25%): 25-40ml, synthetic ammonia: 500g-900g, distilled water: 400-800ml, sodium hydroxide (NaOH): 18-28ml, milk of lime (Ca (OH) 2): 25-35g/mol, calcium carbonate (CaCO 3): 40-60g, sodium carbonate (Na 2CO 3): 30-45g of dilute nitric acid (HNO 3) (with the concentration of 68 percent) 25-40ml of nitric acid, and 15-35ml of concentrated nitric acid (with the concentration of 98 percent).
The concentration of the ammonia water is 25%, the content of the synthetic ammonia is not more than 900g, the content of the distilled water is not more than 800ml, the content of the sodium hydroxide is not more than 28ml, the content of the lime milk is not more than 35g/mol, the content of the calcium carbonate is not more than 60g, the content of the sodium carbonate is not more than 45g, the content of the dilute nitric acid is not more than 40ml, and the content of the concentrated nitric acid is not more than 35 ml.
The preparation method of the cocatalyst comprises the following steps:
the first step is as follows: firstly, enough ammonia water (with the concentration of 25 percent), synthetic ammonia, distilled water, sodium hydroxide (NaOH), lime cream (Ca (OH) 2), calcium carbonate (CaCO 3) and sodium carbonate are prepared, firstly, oxygen is injected into coal to a small extent so as to form the condition of low-oxygen combustion under the condition of coal burning, then 30ml of ammonia water with the concentration of 25 percent is injected into a coal burning furnace, and the temperature is increased to 700 to 800 ℃ and then heated for 1.5 hours.
The second step is that: then adding 25ml of sodium hydroxide (NaOH) into the coal-fired furnace filled with 25% ammonia water, heating for 1.5 hours until the sodium hydroxide (NaOH) is completely dissolved in the coal powder, and then adding 700g of synthetic ammonia according to the proportion of 2: 3 placing the mixture in a furnace containing coal, and keeping the mixture at the temperature of 1500-1800 ℃ for 4 hours.
The third step: putting 30g/mol lime milk Ca (OH) into a reaction bottle, continuously heating to form liquid, and then putting the lime milk, calcium carbonate CaCO3 and sodium carbonate Na2CO3 into a glass according to the proportion of 2: 1: 3, slowly pouring the mixture into a reaction bottle, continuously stirring the mixture for 20 minutes, standing the mixture for 2 hours, preserving the temperature of the mixture for 3 to 6 hours at 1700 to 2000 ℃, and cooling the mixture to obtain a primary cocatalyst.
The fourth step: 30ml of dilute nitric acid with the concentration of 68 percent is firstly put into a reaction bottle with the primary catalyst promoter product, the reaction bottle is kept stand for 20 minutes, 25ml of concentrated nitric acid with the concentration of 98 percent is then put into the reaction bottle, the mixture is separated by evaporation crystallization and kept stand for 4 hours, 500ml of distilled water is used for cleaning the crystal, 10ml of sodium carbonate is added, the temperature is kept between 850 ℃ and 1100 ℃, a glass cup is used for continuously stirring and mixing, the temperature is kept for 3 hours, then materialization treatment is carried out, and cooling is carried out to obtain the catalyst promoter for the coal-fired flue gas reduction denitration according to the period.
Example 2:
the invention provides a cocatalyst for reducing and denitrating ammonia gas in coal-fired flue gas, which comprises the following components in percentage by weight: ammonia (concentration 25%): 25-40ml, synthetic ammonia: 500g-900g, distilled water: 400-800ml, sodium hydroxide (NaOH): 18-28ml, milk of lime (Ca (OH) 2): 25-35g/mol, calcium carbonate (CaCO 3): 40-60g, sodium carbonate (Na 2CO 3): 30-45g of dilute nitric acid (HNO 3) (with the concentration of 68 percent) 25-40ml of nitric acid, and 15-35ml of concentrated nitric acid (with the concentration of 98 percent).
The concentration of the ammonia water is 25%, the content of the synthetic ammonia is not more than 900g, the content of the distilled water is not more than 800ml, the content of the sodium hydroxide is not more than 28ml, the content of the lime milk is not more than 35g/mol, the content of the calcium carbonate is not more than 60g, the content of the sodium carbonate is not more than 45g, the content of the dilute nitric acid is not more than 40ml, and the content of the concentrated nitric acid is not more than 35 ml.
The preparation method of the cocatalyst comprises the following steps:
the first step is as follows: firstly, enough ammonia water (with the concentration of 25 percent), synthetic ammonia, distilled water, sodium hydroxide (NaOH), lime cream (Ca (OH) 2), calcium carbonate (CaCO 3) and sodium carbonate are prepared, oxygen is injected into combustion coal to a small extent so as to form the condition of low-oxygen combustion under the condition of coal combustion, then 20ml of ammonia water with the concentration of 25 percent is injected into a coal combustion furnace, and the temperature is raised to 600-700 ℃ and heated for 1.5 hours.
The second step is that: then adding 15ml of sodium hydroxide (NaOH) into the coal-fired furnace filled with 25% ammonia water, heating for 1.5 hours until the sodium hydroxide (NaOH) is completely dissolved in the coal powder, and then adding 500g of synthetic ammonia according to the proportion of 2: 3, placing the mixture in a furnace containing coal, and keeping the mixture at the temperature of 1200-1500 ℃ for 4 hours.
The third step: putting 30g/mol lime milk Ca (OH) into a reaction bottle, continuously heating to form liquid, and then mixing the lime milk, calcium carbonate CaCO3 and sodium carbonate Na2CO3 in a glass cup according to the proportion of 1: 2: 3, slowly pouring the mixture into a reaction bottle, continuously stirring the mixture for 20 minutes, standing the mixture for 2 hours, preserving the heat of the mixture for 3 hours to 6 hours at the temperature of 1300 ℃ to 1700 ℃, and cooling the mixture to obtain a primary cocatalyst.
The fourth step: 20ml of dilute nitric acid with the concentration of 68 percent is firstly put into a reaction bottle with the primary cocatalyst product, after standing for 20 minutes, 15ml of concentrated nitric acid with the concentration of 98 percent is put into the reaction bottle, separation is carried out through evaporation crystallization, after standing for 4 hours, 500ml of distilled water is used for cleaning the crystal, 10ml of sodium carbonate is added, the temperature is kept between 850 ℃ and 1100 ℃, a glass cup is used for continuously stirring and mixing, heat preservation is carried out for 3 hours, then conversion treatment is carried out, and cooling is carried out to obtain the cocatalyst for reducing and denitrating coal-fired flue gas according to the period.
Example 3:
the invention provides a cocatalyst for reducing and denitrating ammonia gas in coal-fired flue gas, which comprises the following components in percentage by weight: ammonia (concentration 25%): 25-40ml, synthetic ammonia: 500g-900g, distilled water: 400-800ml, sodium hydroxide (NaOH): 18-28ml, milk of lime (Ca (OH) 2): 25-35g/mol, calcium carbonate (CaCO 3): 40-60g, sodium carbonate (Na 2CO 3): 30-45g of dilute nitric acid (HNO 3) (with the concentration of 68 percent) 25-40ml of nitric acid, and 15-35ml of concentrated nitric acid (with the concentration of 98 percent).
The concentration of the ammonia water is 25%, the content of the synthetic ammonia is not more than 900g, the content of the distilled water is not more than 800ml, the content of the sodium hydroxide is not more than 28ml, the content of the lime milk is not more than 35g/mol, the content of the calcium carbonate is not more than 60g, the content of the sodium carbonate is not more than 45g, the content of the dilute nitric acid is not more than 40ml, and the content of the concentrated nitric acid is not more than 35 ml.
The preparation method of the cocatalyst comprises the following steps:
the first step is as follows: firstly, enough ammonia water (with the concentration of 25 percent), synthetic ammonia, distilled water, sodium hydroxide (NaOH), lime cream (Ca (OH) 2), calcium carbonate (CaCO 3) and sodium carbonate are prepared, oxygen is injected into combustion coal to a small extent so as to form the condition of low-oxygen combustion under the condition of coal combustion, then ammonia water with the concentration of 25 percent is injected into a coal combustion furnace to 40ml, the temperature is raised to 700 ℃ to 900 ℃, and the heating is carried out for 1.5 hours.
The second step is that: then adding 35ml of sodium hydroxide (NaOH) into the coal-fired furnace filled with 25% ammonia water, heating for 1.5 hours until the sodium hydroxide (NaOH) is completely dissolved in the coal powder, and then adding 800g of synthetic ammonia according to the proportion of 2: 3, placing the mixture in a furnace containing coal, and keeping the mixture at the temperature of 1800-2000 ℃ for 4 hours.
The third step: putting 30g/mol lime milk Ca (OH) into a reaction bottle, continuously heating to form liquid, and then putting the lime milk, calcium carbonate CaCO3 and sodium carbonate Na2CO3 into a glass according to the proportion of 2: 2: 3, slowly pouring the mixture into a reaction bottle, continuously stirring the mixture for 20 minutes, standing the mixture for 2 hours, preserving the temperature of the mixture for 3 to 6 hours at the temperature of between 2000 and 2200 ℃, and cooling the mixture to obtain a primary cocatalyst.
The fourth step: 40ml of dilute nitric acid with the concentration of 68 percent is firstly put into a reaction bottle with the primary cocatalyst product, after standing for 20 minutes, 35ml of concentrated nitric acid with the concentration of 98 percent is put into the reaction bottle, separation is carried out through evaporation crystallization, after standing for 4 hours, 500ml of distilled water is used for cleaning the crystal, 10ml of sodium carbonate is added, the temperature is kept between 850 ℃ and 1100 ℃, a glass cup is used for continuously stirring and mixing, heat preservation is carried out for 3 hours, then conversion treatment is carried out, and cooling is carried out to obtain the cocatalyst for reducing and denitrating coal-fired flue gas according to the period.
The above description is only a preferred embodiment of the application and is illustrative of the principles of the technology employed. It will be appreciated by a person skilled in the art that the scope of the invention as referred to in the present application is not limited to the embodiments with a specific combination of the above-mentioned features, but also covers other embodiments with any combination of the above-mentioned features or their equivalents without departing from the inventive concept. For example, the above features may be replaced with (but not limited to) features having similar functions disclosed in the present application.
Claims (3)
1. The catalyst promoter for reducing and denitrating the ammonia gas in the coal-fired flue gas is characterized by comprising the following components in percentage by weight: ammonia (concentration 25%): 25-40ml, synthetic ammonia: 500g-900g, distilled water: 400-800ml, sodium hydroxide (NaOH): 18-28ml, milk of lime (Ca (OH) 2): 25-35g/mol, calcium carbonate (CaCO 3): 40-60g, sodium carbonate (Na 2CO 3): 30-45g of dilute nitric acid (HNO 3) (with the concentration of 68 percent) 25-40ml of nitric acid, and 15-35ml of concentrated nitric acid (with the concentration of 98 percent).
2. The promoter for reducing and denitrating ammonia gas in coal-fired flue gas according to claim 1, which is characterized in that: the concentration of the ammonia water is 25%, the content of the synthetic ammonia is not more than 900g, the content of the distilled water is not more than 800ml, the content of the sodium hydroxide is not more than 28ml, the content of the lime milk is not more than 35g/mol, the content of the calcium carbonate is not more than 60g, the content of the sodium carbonate is not more than 45g, the content of the dilute nitric acid is not more than 40ml, and the content of the concentrated nitric acid is not more than 35 ml.
3. The preparation method of the promoter for reducing and denitrating ammonia gas in coal-fired flue gas according to any one of claims 1 to 2, characterized by comprising the following steps: the method comprises the following steps:
the first step is as follows: firstly, preparing enough ammonia water (with the concentration of 25 percent), synthetic ammonia, distilled water, sodium hydroxide (NaOH), lime cream (Ca (OH) 2), calcium carbonate (CaCO 3) and sodium carbonate, firstly, injecting less oxygen in coal combustion to form a low-oxygen combustion condition under the coal combustion condition, then injecting 30ml of ammonia water with the concentration of 25 percent into a coal combustion furnace, heating to 700-800 ℃, and then heating for 1.5 hours;
the second step is that: then adding 25ml of sodium hydroxide (NaOH) into the coal-fired furnace filled with 25% ammonia water, heating for 1.5 hours until the sodium hydroxide (NaOH) is completely dissolved in the coal powder, and then adding 700g of synthetic ammonia according to the proportion of 2: 3 placing the mixture in a furnace containing coal, and keeping the mixture at the temperature of 1500-1800 ℃ for 4 hours;
the third step: putting 30g/mol lime milk Ca (OH) into a reaction bottle, continuously heating to form liquid, and then putting the lime milk, calcium carbonate CaCO3 and sodium carbonate Na2CO3 into a glass according to the proportion of 2: 1: 3, slowly pouring the mixture into a reaction bottle, continuously stirring the mixture for 20 minutes, standing the mixture for 2 hours, preserving the heat of the mixture for 3 to 6 hours at the temperature of 1700 to 2000 ℃, and cooling the mixture to obtain a cocatalyst primary product;
the fourth step: 30ml of dilute nitric acid with the concentration of 68 percent is firstly put into a reaction bottle with the primary catalyst promoter product, the reaction bottle is kept stand for 20 minutes, 25ml of concentrated nitric acid with the concentration of 98 percent is then put into the reaction bottle, the mixture is separated by evaporation crystallization and kept stand for 4 hours, 500ml of distilled water is used for cleaning the crystal, 10ml of sodium carbonate is added, the temperature is kept between 850 ℃ and 1100 ℃, a glass cup is used for continuously stirring and mixing, the temperature is kept for 3 hours, then materialization treatment is carried out, and cooling is carried out to obtain the catalyst promoter for the coal-fired flue gas reduction denitration according to the period.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811240282.7A CN111085229A (en) | 2018-10-23 | 2018-10-23 | Cocatalyst for reducing and denitrifying ammonia gas in coal-fired flue gas |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201811240282.7A CN111085229A (en) | 2018-10-23 | 2018-10-23 | Cocatalyst for reducing and denitrifying ammonia gas in coal-fired flue gas |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870949A (en) * | 2021-01-05 | 2021-06-01 | 福建省福能龙安热电有限公司 | Denitration method and device for ammonia gas heated by ammonia water |
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|---|---|---|---|---|
| CN1785522A (en) * | 2005-11-30 | 2006-06-14 | 曹志德 | Desulfur denitrogen catalyst of fuel coal, fuel oil boiler smoke and its desulfur denitrogen method |
| CN103194295A (en) * | 2013-04-25 | 2013-07-10 | 甘肃黑马石化工程有限公司 | Boiler coal combustion-improving denitrifying agent composition and preparation method thereof |
| CN105289299A (en) * | 2015-10-30 | 2016-02-03 | 太仓东能环保设备有限公司 | SCR flue gas denitration process |
| CN107376586A (en) * | 2017-08-23 | 2017-11-24 | 东莞市联洲知识产权运营管理有限公司 | A kind of effective ways of coal-fired flue gas desulfurization decarburization |
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2018
- 2018-10-23 CN CN201811240282.7A patent/CN111085229A/en not_active Withdrawn
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1785522A (en) * | 2005-11-30 | 2006-06-14 | 曹志德 | Desulfur denitrogen catalyst of fuel coal, fuel oil boiler smoke and its desulfur denitrogen method |
| CN103194295A (en) * | 2013-04-25 | 2013-07-10 | 甘肃黑马石化工程有限公司 | Boiler coal combustion-improving denitrifying agent composition and preparation method thereof |
| CN105289299A (en) * | 2015-10-30 | 2016-02-03 | 太仓东能环保设备有限公司 | SCR flue gas denitration process |
| CN107376586A (en) * | 2017-08-23 | 2017-11-24 | 东莞市联洲知识产权运营管理有限公司 | A kind of effective ways of coal-fired flue gas desulfurization decarburization |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112870949A (en) * | 2021-01-05 | 2021-06-01 | 福建省福能龙安热电有限公司 | Denitration method and device for ammonia gas heated by ammonia water |
| CN112870949B (en) * | 2021-01-05 | 2021-10-29 | 福建省福能龙安热电有限公司 | Denitration method and device for heating ammonia water to generate ammonia gas |
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Application publication date: 20200501 |