CN114570177A - Biomass calcium-based solid denitration agent and preparation method thereof - Google Patents
Biomass calcium-based solid denitration agent and preparation method thereof Download PDFInfo
- Publication number
- CN114570177A CN114570177A CN202210325517.2A CN202210325517A CN114570177A CN 114570177 A CN114570177 A CN 114570177A CN 202210325517 A CN202210325517 A CN 202210325517A CN 114570177 A CN114570177 A CN 114570177A
- Authority
- CN
- China
- Prior art keywords
- based solid
- biomass
- biomass calcium
- denitration agent
- calcium
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002028 Biomass Substances 0.000 title claims abstract description 33
- 239000007787 solid Substances 0.000 title claims abstract description 31
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 25
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 title claims abstract description 23
- 229910052791 calcium Inorganic materials 0.000 title claims abstract description 23
- 239000011575 calcium Substances 0.000 title claims abstract description 23
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 10
- 239000002270 dispersing agent Substances 0.000 claims abstract description 10
- 239000000618 nitrogen fertilizer Substances 0.000 claims abstract description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 9
- 238000006243 chemical reaction Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 claims description 4
- ZFSLODLOARCGLH-UHFFFAOYSA-N isocyanuric acid Chemical compound OC1=NC(O)=NC(O)=N1 ZFSLODLOARCGLH-UHFFFAOYSA-N 0.000 claims description 4
- -1 amine salts Chemical class 0.000 claims description 3
- 125000003178 carboxy group Chemical group [H]OC(*)=O 0.000 claims description 3
- 238000000227 grinding Methods 0.000 claims description 3
- 229920005610 lignin Polymers 0.000 claims description 3
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N phenol group Chemical group C1(=CC=CC=C1)O ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 239000002994 raw material Substances 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- 150000001413 amino acids Chemical class 0.000 claims description 2
- 229910021529 ammonia Inorganic materials 0.000 claims description 2
- 150000003863 ammonium salts Chemical class 0.000 claims description 2
- 125000000468 ketone group Chemical group 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 238000000034 method Methods 0.000 claims description 2
- 239000000203 mixture Substances 0.000 claims 1
- 150000003254 radicals Chemical class 0.000 claims 1
- 239000007789 gas Substances 0.000 description 4
- 239000000843 powder Substances 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 2
- 235000011130 ammonium sulphate Nutrition 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical class [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 description 1
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 239000003546 flue gas Substances 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011946 reduction process Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
Classifications
-
- 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
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
- B01D53/565—Nitrogen oxides by treating the gases with solids
-
- 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
-
- 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
- B01D53/81—Solid phase processes
- B01D53/83—Solid phase processes with moving reactants
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium
-
- 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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a biomass calcium-based solid denitrifying agent and a preparation method thereof, relating to the technical field of denitrifying agents, and comprising 10-30% of biomass calcium salt, 30-60% of nitrogen fertilizer and derivatives, 2-20% of dispersing agent and 0-50% of water. The biological calcium-based solid denitration agent can reduce the reaction temperature window of SNCR denitration, and realize the SNCR denitration reaction at a lower temperature.
Description
Technical Field
The invention relates to the technical field of denitration agents, and particularly relates to a biomass calcium-based solid denitration agent and a preparation method thereof.
Background
With the increasing national indexes of atmospheric pollutant emission and the continuous requirements of ultralow emission and near zero emission, NO is continuously generatedXAs harmful gas in the industrial production exhaust gas, the control is first brought to the forefront, and enterprises which exhaust polluted gas also think to reach the environmental protection emission index by the best method.
Reduction process for removal of NOXThe gas is usually subjected to SCR denitration and SNCR denitration, wherein the SCR denitration temperature window is 160-420 ℃, and the SNCR denitration temperature window is 800-1100 ℃. The SCR denitration investment is high, the system is complex, and the denitration efficiency is high; SNCR denitration investment is low, and the system is simple, and the denitration efficiency is low, and is strict to denitration temperature window requirement.
The SCR denitration is carried out, and no space is reformed; or the temperature of the flue gas in the furnace is lower than 750 ℃, and the tradition can not be adoptedSNCR (selective non-catalytic reduction). Now to increase NOXThe emission index becomes a difficult problem in front of enterprises. If the smoke temperature of the medium-temperature and medium-pressure biomass vibration grate boiler is 700-.
Disclosure of Invention
Aiming at the technical problems, the invention overcomes the defects of the prior art and provides a biomass calcium-based solid denitration agent which comprises 10-30% of biomass calcium salt, 30-60% of nitrogen fertilizer and derivatives, 2-20% of dispersing agent and 0-50% of water.
The technical scheme of the invention is further defined as follows:
the biomass calcium-based solid denitration agent has more than 80% of effective components in the biomass calcium salt, is macromolecules with active groups, and can decompose free-radical substances at high temperature.
In the biomass calcium-based solid denitration agent, the active group comprises a carboxyl group, a phenolic group or a ketone group.
In the biomass calcium-based solid denitration agent, the nitrogen fertilizer and the derivative are ammonium salt, amine salt or cyanuric acid, and ammonia can be decomposed at high temperature.
The dispersing agent of the biomass calcium-based solid denitration agent comprises one or more of polyacrylamide, amino acid and lignin, and can enable the biomass calcium-based denitration agent to form a uniform and stable solution in water.
The effective reaction temperature window of SNCR denitration of the biomass calcium-based solid denitration agent is 550-1100 ℃.
The invention also aims to provide a preparation method of the biomass calcium-based solid denitration agent, which comprises the steps of respectively adding raw and auxiliary materials of biomass calcium salt, a nitrogen fertilizer, a derivative and a dispersing agent into a crusher for crushing, uniformly mixing the crushed raw materials in a mixer, finally, finely grinding the mixed materials in a fine grinder to obtain a powdery solid finished product, and adding water into the powdery solid finished product to obtain a liquid finished product.
The invention has the beneficial effects that: the reaction temperature window of SNCR denitration can be reduced, and the SNCR denitration reaction at a lower temperature is realized; the transportation cost can be reduced by preparing the solid powdery finished product, and the long-distance transportation is realized; and the fluidized air is adopted to spray denitration into the hearth or the flue, so that compared with ammonia water or urea solution, the denitration device is less in equipment and low in investment.
Detailed Description
Example 1
The biomass calcium-based solid denitration agent provided by the embodiment comprises 25% of biomass calcium salt (carboxyl and phenolic calcium salt), 60% of nitrogen fertilizer and derivatives (ammonium sulfate 70% + cyanuric acid 30%) and 15% of dispersing agent (lignin).
The preparation method comprises the following steps: respectively adding the raw and auxiliary materials of the biomass calcium salt, the nitrogen fertilizer and derivatives thereof and the dispersing agent into a crusher for crushing, uniformly mixing the crushed raw materials in a mixer, and finally finely grinding the mixed materials in a fine grinder to obtain a powdery solid finished product.
The solid powder product is prepared by the formula, and when the solid powder product is applied, a solution is required to be prepared, the water adding amount is equal to the dry powder amount, and the solid powder product is used after being uniformly stirred. The solid powdery finished product can reduce the transportation cost and can be transported in a long distance.
Example 2
The difference between the biomass calcium-based solid denitration agent provided in this example and example 1 is that biomass calcium salt (phenolic group + keto calcium salt) is 10%, nitrogen fertilizer and derivatives (urea 60% + ammonium sulfate 20% + cyanuric acid 20%) are 30%, dispersant (polyacrylamide) is 10%, and water is 50%.
The finished product prepared by the formula is a solution-shaped finished product which can be directly used, but has high transportation cost, and is suitable for power plants near production devices.
In addition to the above embodiments, the present invention may have other embodiments. All technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (7)
1. A biomass calcium-based solid denitration agent is characterized in that: comprises 10-30% of biomass calcium salt, 30-60% of nitrogenous fertilizer and derivatives, 2-20% of dispersing agent and 0-50% of water.
2. The biomass calcium-based solid denitration agent according to claim 1, characterized in that: the biomass calcium salt contains more than 80% of effective components, is macromolecular with active groups, and can decompose free radical substances at high temperature.
3. The biomass calcium-based solid denitration agent according to claim 2, characterized in that: the reactive group comprises a carboxyl group, a phenolic group or a keto group.
4. The biomass calcium-based solid denitration agent according to claim 1, characterized in that: the nitrogen fertilizer and the derivatives are ammonium salts, amine salts or cyanuric acid, and substances capable of decomposing ammonia at high temperature.
5. The biomass calcium-based solid denitration agent according to claim 1, characterized in that: the dispersing agent comprises one or more of polyacrylamide, amino acid and lignin, and can enable the biomass calcium-based denitration agent to form a uniform and stable solution in water.
6. The biomass calcium-based solid denitration agent and the preparation method thereof according to claim 1, characterized in that: the effective reaction temperature window for SNCR denitration is between 550 ℃ and 1100 ℃.
7. A preparation method of a biomass calcium-based solid denitration agent is characterized by comprising the following steps: the method is applied to any one of claims 1 to 6, the raw auxiliary materials of the biomass calcium salt, the nitrogen fertilizer and the derivatives thereof and the dispersing agent are respectively added into a pulverizer to be pulverized, the pulverized raw materials are uniformly mixed in a mixer, finally the mixture is finely ground in a fine grinding machine to obtain a powdery solid finished product, and the powdery solid finished product is added with water to obtain a liquid finished product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210325517.2A CN114570177A (en) | 2022-03-30 | 2022-03-30 | Biomass calcium-based solid denitration agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210325517.2A CN114570177A (en) | 2022-03-30 | 2022-03-30 | Biomass calcium-based solid denitration agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114570177A true CN114570177A (en) | 2022-06-03 |
Family
ID=81783291
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210325517.2A Pending CN114570177A (en) | 2022-03-30 | 2022-03-30 | Biomass calcium-based solid denitration agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114570177A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010052992A (en) * | 2008-08-28 | 2010-03-11 | Tanabe Kensetsu Kk | Material for cleaning gas phase environment and method for producing the same |
| CN104174277A (en) * | 2014-08-22 | 2014-12-03 | 华中科技大学 | Preparation method of efficient desulfurization and denitration agent for coal-fired boiler and application of efficient desulfurization and denitration agent for coal-fired boiler |
| US20180043302A1 (en) * | 2015-03-20 | 2018-02-15 | Yongfeng Boyuan Industry Co. Ltd., Jiangxi Province | Desulfurization and denitration agent |
| CN107930384A (en) * | 2017-11-23 | 2018-04-20 | 邓丽珍 | A kind of composite biomass denitrfying agent |
| CN109201001A (en) * | 2018-11-03 | 2019-01-15 | 中国农业科学院农业环境与可持续发展研究所 | A kind of preparation method of selective absorbent |
| CN111495178A (en) * | 2020-04-08 | 2020-08-07 | 天津洁创环保科技有限公司 | Desulfurization and denitrification agent and preparation method and application thereof |
| CN113908723A (en) * | 2021-09-01 | 2022-01-11 | 苏州道源华智环保科技有限公司 | Preparation method and production equipment of flue gas denitration agent |
-
2022
- 2022-03-30 CN CN202210325517.2A patent/CN114570177A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010052992A (en) * | 2008-08-28 | 2010-03-11 | Tanabe Kensetsu Kk | Material for cleaning gas phase environment and method for producing the same |
| CN104174277A (en) * | 2014-08-22 | 2014-12-03 | 华中科技大学 | Preparation method of efficient desulfurization and denitration agent for coal-fired boiler and application of efficient desulfurization and denitration agent for coal-fired boiler |
| US20180043302A1 (en) * | 2015-03-20 | 2018-02-15 | Yongfeng Boyuan Industry Co. Ltd., Jiangxi Province | Desulfurization and denitration agent |
| CN107930384A (en) * | 2017-11-23 | 2018-04-20 | 邓丽珍 | A kind of composite biomass denitrfying agent |
| CN109201001A (en) * | 2018-11-03 | 2019-01-15 | 中国农业科学院农业环境与可持续发展研究所 | A kind of preparation method of selective absorbent |
| CN111495178A (en) * | 2020-04-08 | 2020-08-07 | 天津洁创环保科技有限公司 | Desulfurization and denitrification agent and preparation method and application thereof |
| CN113908723A (en) * | 2021-09-01 | 2022-01-11 | 苏州道源华智环保科技有限公司 | Preparation method and production equipment of flue gas denitration agent |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11345637B2 (en) | Ozonation-based method for producing cementitious material | |
| CN108187490A (en) | Macromolecule Dry denitration agent and preparation method thereof and denitrating technique and denitration device | |
| CN101397514B (en) | Quick-burning clean coal fines and method for producing the same | |
| CN106861431A (en) | Quadruple effect denitrfying agent composition and its method of denitration | |
| CN110721571A (en) | Dry desulfurizing agent for cement production and preparation method thereof | |
| CN103232875B (en) | Coal-fired nano-catalyst for combustion-supporting desulfurization and denitration and preparation method thereof | |
| CN104722165A (en) | Environmental-protection process for purifying tail gas in production of amino acid | |
| CN110026077A (en) | A kind of denitrfying agent, preparation method and Dry denitration method | |
| CN110605014A (en) | Dry-method desulfurizer production process and system | |
| CN111686564A (en) | High-molecular solid powder denitration agent for flue gas denitration and preparation method thereof | |
| CN109316892A (en) | A kind of denitrfying agent, preparation method and Dry denitration method | |
| CN105367357A (en) | Organic-inorganic compound fertilizer and preparation method thereof | |
| CN104387159A (en) | Method for removing harmful gases in boiler exhaust gas | |
| US4252553A (en) | Process for production of fertilizers | |
| CN111111773A (en) | Desulfurization and denitrification catalyst for cement production | |
| CN114570177A (en) | Biomass calcium-based solid denitration agent and preparation method thereof | |
| CN110877992A (en) | Preparation method of steel slag-manganese slag compound fertilizer | |
| US4073634A (en) | Process for production of fertilizers | |
| CN105316076A (en) | Liquid fuel-coal sulfur-fixation agent and preparation method thereof | |
| CN102795651A (en) | Method for directly producing powdery calcium oxide from dicyandiamide waste residues | |
| US4168150A (en) | Process for production of fertilizers | |
| CN115253625A (en) | Efficient solid denitration agent and preparation method thereof | |
| CN103160358B (en) | Denitration coal water slurry | |
| CN111701432B (en) | Denitration desulfurizer and preparation method thereof | |
| CN113209808A (en) | Novel denitration agent and preparation method and application thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |