CN117427478A - Composite fiber denitration agent and preparation method thereof - Google Patents
Composite fiber denitration agent and preparation method thereof Download PDFInfo
- Publication number
- CN117427478A CN117427478A CN202310070920.XA CN202310070920A CN117427478A CN 117427478 A CN117427478 A CN 117427478A CN 202310070920 A CN202310070920 A CN 202310070920A CN 117427478 A CN117427478 A CN 117427478A
- Authority
- CN
- China
- Prior art keywords
- parts
- composite fiber
- organic
- denitration agent
- denitration
- 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
- 239000002131 composite material Substances 0.000 title claims abstract description 37
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 33
- 239000000835 fiber Substances 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 150000001412 amines Chemical class 0.000 claims abstract description 11
- 150000001413 amino acids Chemical class 0.000 claims abstract description 11
- 238000000034 method Methods 0.000 claims abstract description 11
- 150000003839 salts Chemical class 0.000 claims abstract description 11
- 150000007524 organic acids Chemical class 0.000 claims abstract description 10
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 6
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 6
- 239000011575 calcium Substances 0.000 claims abstract description 6
- 239000004519 grease Substances 0.000 claims abstract description 6
- 239000012266 salt solution Substances 0.000 claims abstract description 4
- 229940024606 amino acid Drugs 0.000 claims description 10
- 235000001014 amino acid Nutrition 0.000 claims description 10
- 238000002156 mixing Methods 0.000 claims description 10
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 claims description 9
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 claims description 9
- 239000002904 solvent Substances 0.000 claims description 9
- 150000002632 lipids Chemical class 0.000 claims description 8
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 claims description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005303 weighing Methods 0.000 claims description 5
- 239000007864 aqueous solution Substances 0.000 claims description 4
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 claims description 4
- 229920002678 cellulose Polymers 0.000 claims description 4
- 239000001913 cellulose Substances 0.000 claims description 4
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 3
- 239000004475 Arginine Substances 0.000 claims description 3
- 239000004471 Glycine Substances 0.000 claims description 3
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 3
- ODKSFYDXXFIFQN-UHFFFAOYSA-N arginine Natural products OC(=O)C(N)CCCNC(N)=N ODKSFYDXXFIFQN-UHFFFAOYSA-N 0.000 claims description 3
- NKWPZUCBCARRDP-UHFFFAOYSA-L calcium bicarbonate Chemical compound [Ca+2].OC([O-])=O.OC([O-])=O NKWPZUCBCARRDP-UHFFFAOYSA-L 0.000 claims description 3
- 229910000020 calcium bicarbonate Inorganic materials 0.000 claims description 3
- TXTCTCUXLQYGLA-UHFFFAOYSA-L calcium;prop-2-enoate Chemical compound [Ca+2].[O-]C(=O)C=C.[O-]C(=O)C=C TXTCTCUXLQYGLA-UHFFFAOYSA-L 0.000 claims description 3
- MDZKJHQSJHYOHJ-UHFFFAOYSA-N crataegolic acid Natural products C1C(O)C(O)C(C)(C)C2CCC3(C)C4(C)CCC5(C(O)=O)CCC(C)(C)CC5C4=CCC3C21C MDZKJHQSJHYOHJ-UHFFFAOYSA-N 0.000 claims description 3
- 235000018417 cysteine Nutrition 0.000 claims description 3
- XUJNEKJLAYXESH-UHFFFAOYSA-N cysteine Natural products SCC(N)C(O)=O XUJNEKJLAYXESH-UHFFFAOYSA-N 0.000 claims description 3
- 235000013905 glycine and its sodium salt Nutrition 0.000 claims description 3
- 239000004247 glycine and its sodium salt Substances 0.000 claims description 3
- QWDJLDTYWNBUKE-UHFFFAOYSA-L magnesium bicarbonate Chemical compound [Mg+2].OC([O-])=O.OC([O-])=O QWDJLDTYWNBUKE-UHFFFAOYSA-L 0.000 claims description 3
- 229910000022 magnesium bicarbonate Inorganic materials 0.000 claims description 3
- 235000014824 magnesium bicarbonate Nutrition 0.000 claims description 3
- 239000002370 magnesium bicarbonate Substances 0.000 claims description 3
- MDZKJHQSJHYOHJ-LLICELPBSA-N maslinic acid Chemical compound C1[C@@H](O)[C@H](O)C(C)(C)[C@@H]2CC[C@@]3(C)[C@]4(C)CC[C@@]5(C(O)=O)CCC(C)(C)C[C@H]5C4=CC[C@@H]3[C@]21C MDZKJHQSJHYOHJ-LLICELPBSA-N 0.000 claims description 3
- 235000006408 oxalic acid Nutrition 0.000 claims description 3
- 229920002401 polyacrylamide Polymers 0.000 claims description 3
- 239000011734 sodium Substances 0.000 claims description 3
- 229910052708 sodium Inorganic materials 0.000 claims description 3
- 229940029258 sodium glycinate Drugs 0.000 claims description 3
- WUWHFEHKUQVYLF-UHFFFAOYSA-M sodium;2-aminoacetate Chemical compound [Na+].NCC([O-])=O WUWHFEHKUQVYLF-UHFFFAOYSA-M 0.000 claims description 3
- 239000000243 solution Substances 0.000 claims description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 claims description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 claims description 2
- XUJNEKJLAYXESH-REOHCLBHSA-N L-Cysteine Chemical compound SC[C@H](N)C(O)=O XUJNEKJLAYXESH-REOHCLBHSA-N 0.000 claims description 2
- ODKSFYDXXFIFQN-BYPYZUCNSA-P L-argininium(2+) Chemical compound NC(=[NH2+])NCCC[C@H]([NH3+])C(O)=O ODKSFYDXXFIFQN-BYPYZUCNSA-P 0.000 claims description 2
- UIIMBOGNXHQVGW-DEQYMQKBSA-M Sodium bicarbonate-14C Chemical compound [Na+].O[14C]([O-])=O UIIMBOGNXHQVGW-DEQYMQKBSA-M 0.000 claims description 2
- 125000005521 carbonamide group Chemical group 0.000 claims description 2
- PXEDJBXQKAGXNJ-QTNFYWBSSA-L disodium L-glutamate Chemical compound [Na+].[Na+].[O-]C(=O)[C@@H](N)CCC([O-])=O PXEDJBXQKAGXNJ-QTNFYWBSSA-L 0.000 claims description 2
- 229910017053 inorganic salt Inorganic materials 0.000 claims description 2
- 235000013923 monosodium glutamate Nutrition 0.000 claims description 2
- 229940083542 sodium Drugs 0.000 claims description 2
- 235000015424 sodium Nutrition 0.000 claims description 2
- 229940073490 sodium glutamate Drugs 0.000 claims description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 10
- 239000003546 flue gas Substances 0.000 abstract description 10
- 238000004939 coking Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 abstract description 4
- 239000002028 Biomass Substances 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 65
- 238000002485 combustion reaction Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 5
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 description 4
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 4
- 229910017604 nitric acid Inorganic materials 0.000 description 4
- 238000003916 acid precipitation Methods 0.000 description 3
- 239000012298 atmosphere Substances 0.000 description 3
- LZDSILRDTDCIQT-UHFFFAOYSA-N dinitrogen trioxide Chemical compound [O-][N+](=O)N=O LZDSILRDTDCIQT-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- GQPLMRYTRLFLPF-UHFFFAOYSA-N Nitrous Oxide Chemical compound [O-][N+]#N GQPLMRYTRLFLPF-UHFFFAOYSA-N 0.000 description 2
- 239000004202 carbamide Substances 0.000 description 2
- 239000003054 catalyst Substances 0.000 description 2
- 238000010531 catalytic reduction reaction Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- ZWWCURLKEXEFQT-UHFFFAOYSA-N dinitrogen pentaoxide Chemical compound [O-][N+](=O)O[N+]([O-])=O ZWWCURLKEXEFQT-UHFFFAOYSA-N 0.000 description 2
- WFPZPJSADLPSON-UHFFFAOYSA-N dinitrogen tetraoxide Chemical compound [O-][N+](=O)[N+]([O-])=O WFPZPJSADLPSON-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- LHKVDVFVJMYULK-UHFFFAOYSA-N nitrosylazide Chemical compound [N-]=[N+]=NN=O LHKVDVFVJMYULK-UHFFFAOYSA-N 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- VHUUQVKOLVNVRT-UHFFFAOYSA-N Ammonium hydroxide Chemical compound [NH4+].[OH-] VHUUQVKOLVNVRT-UHFFFAOYSA-N 0.000 description 1
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 235000011114 ammonium hydroxide Nutrition 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 238000004523 catalytic cracking Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 238000009841 combustion method Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000002283 diesel fuel Substances 0.000 description 1
- AZLYZRGJCVQKKK-UHFFFAOYSA-N dioxohydrazine Chemical compound O=NN=O AZLYZRGJCVQKKK-UHFFFAOYSA-N 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002803 fossil fuel Substances 0.000 description 1
- 238000007710 freezing Methods 0.000 description 1
- 230000008014 freezing Effects 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000004172 nitrogen cycle Methods 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 239000000618 nitrogen fertilizer Substances 0.000 description 1
- 239000001272 nitrous oxide Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000007800 oxidant agent Substances 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 238000006552 photochemical reaction Methods 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 238000006479 redox reaction Methods 0.000 description 1
- XHFLOLLMZOTPSM-UHFFFAOYSA-M sodium;hydrogen carbonate;hydrate Chemical group [OH-].[Na+].OC(O)=O XHFLOLLMZOTPSM-UHFFFAOYSA-M 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000005437 stratosphere Substances 0.000 description 1
- 239000000126 substance Substances 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
-
- 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
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)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a composite fiber denitration agent and a preparation method thereof, wherein the raw materials of the composite fiber denitration agent comprise the following components in parts by weight: 50-70 parts of composite organic calcium, 20-24 parts of organic grease, 23-32 parts of organic amine, 5-9 parts of amino acid, 2-7 parts of organic acid, 1-2 parts of organic salt and 0.08-0.1 part of salt solution. The composite fiber denitration agent is used for denitration of boiler flue gas and the like. The method is suitable for various biomass boilers, gas boilers and coal-fired boilers; the effective temperature is 700-1000 ℃, and the economical applicable temperature is 780-930 ℃; has the characteristics of high efficiency, no coking, low viscosity and wide applicable temperature range.
Description
Technical Field
The invention belongs to the technical field of denitration, and particularly relates to a composite fiber denitration agent and a preparation method thereof.
Background
Nitrogen oxides (NOx) are major atmospheric pollutants that can cause acid rain, photochemical pollution, greenhouse effect, and ozone layer destruction. Nitrogen Oxides (NO) x ) Many kinds are common and include nitrous oxide (N 2 O), nitric Oxide (NO), nitrogen dioxide (NO 2 ) Dinitrogen trioxide (N) 2 O 3 ) Dinitrogen tetroxide (N) 2 O 4 ) And dinitrogen pentoxide (N) 2 O 5 ) In addition, nitric oxide dimer (N 2 O 2 ) Nitrosyl azide (N) 4 O), nitrogen trioxide (NO) 3 ) But mainly NO and NO 2 They are common atmospheric pollutants. Naturally emitted NOx mainly comes from the decomposition of organic matter in the soil and the ocean, belonging to the nitrogen cycle process in nature. NOx emitted by man-made activities, mostly from fossil fuel combustion processes, such as those of automobiles, airplanes, internal combustion engines and industrial kilns; also from processes for the production, use or use of nitric acid, e.g. nitrogen fertilizer plants, plantsIntermediate factories, ferrous metal smelters, etc. NOx has great environmental damage, and is one of the main matters for forming acid rain and the important matter for forming photochemical smog in atmosphere and consumed O 3 Is an important factor of (a). Under high temperature combustion conditions, NOx is mainly present in the form of NO, with about 95% of the initial emissions of NOx. However, NO reacts very easily with oxygen in the air in the atmosphere to form NO 2 Therefore, NOx in the atmosphere is commonly represented by NO 2 Is present in the form of (c). NO and NO in air 2 Equilibrium is achieved by interconversion through photochemical reactions. NO at higher temperatures or in the presence of cloud 2 Further reacts with water molecules to form nitric acid (HNO), a second important acid component in acid rain 3 ). In the presence of a catalyst, e.g. in the presence of suitable weather conditions, NO 2 The conversion rate to nitric acid is increased. In particular when NO 2 With SO 2 When the two components exist simultaneously, the two components can catalyze each other, so that the nitric acid can be formed more quickly. Furthermore, NOx can also build up in concentration as the aircraft emits exhaust gases in the stratosphere, gradually accumulating. NOx re-and-advection layer O 3 React to generate NO and O 2 NO and O 3 Further reaction to produce NO 2 And O 2 Thereby breaking O 3 Balance O 3 Concentration decreases, resulting in O 3 Wear of the layer.
Denitration of coal-fired flue gas is one of the important measures for controlling Nitrogen Oxides (NOX). Flue gas denitration is divided into denitration before combustion, denitration in combustion and denitration after combustion. The denitration before combustion is to perform denitration on fuel coal, and no better method exists in the aspect at present; denitration in combustion is to add a low-nitrogen burner and a staged combustion method in boiler equipment to reduce the generation of nitrogen oxides: the most mature method is widely applied to denitration after combustion, and nitrogen oxides in the flue gas are controlled, and common denitration methods include SCR (selective catalytic reduction), SNCR (selective non-catalytic reduction) and low-temperature-section addition of auxiliary agents.
The flue gas denitration agent mainly comprises urea, ammonia water and an oxidant. Common denitration techniques are SCR and SCNR. SNCR or SCR uses ammonia or urea as a denitration aid, but has a low denitration rate, typically about 50%. Therefore, development of a composite fiber denitration agent with high efficiency, no coking, low viscosity and wide application temperature range is needed.
Disclosure of Invention
The invention aims to provide a composite fiber denitration agent with high efficiency, no coking, low viscosity and wide applicable temperature range and a preparation method thereof.
In order to achieve the above purpose, the invention adopts the following technical scheme:
the composite fiber denitration agent comprises the following raw materials in parts by weight:
50-70 parts of composite organic calcium, 20-24 parts of organic grease, 23-32 parts of organic amine, 5-9 parts of amino acid, 2-7 parts of organic acid, 1-2 parts of organic salt and 0.08-0.1 part of salt solution.
The organic lipid is one of water-soluble lipid and cellulose.
The organic amine is one of acrylamide, carbonamide and polyacrylamide.
The amino acid is one of glycine, arginine and cysteine.
The organic acid is one of acetic acid, acrylic acid, crataegolic acid and oxalic acid.
The organic salt is one of calcium acrylate, sodium glycinate, sodium glutamate and sodium crataegolate.
The solvent is an inorganic salt water solution.
The salt solution is aqueous solution of sodium bicarbonate, calcium bicarbonate, magnesium bicarbonate or calcium sulfate.
The preparation method of the composite fiber denitration agent comprises the following steps: firstly, weighing the raw material components according to the proportion, then fully mixing the raw materials, and uniformly mixing to obtain the water-like composite fiber denitration agent.
The beneficial effects are that: the composite fiber denitration agent is used for denitration of boiler flue gas and the like. The method is suitable for various biomass boilers, gas boilers and coal-fired boilers; the effective temperature is 700-1000 ℃, and the economical applicable temperature is 780-930 ℃; has the characteristics of high efficiency, no coking, low viscosity and wide applicable temperature range. Can be suitable for gas, coal and biomass boilers with lower flue gas temperature, cement kilns, glass kilns and stonesAsh kilns, ceramic kiln paths, and the like. The invention is ammonia-free denitration, has lower denitration temperature and has a removal part S0 2 The denitration depth is highly controllable. Can meet stricter flue gas emission requirements, and has high denitration efficiency which can reach 70-90%.
Detailed Description
The invention will be further explained with reference to examples.
Example 1
The composite fiber denitration agent comprises the following raw materials in parts by weight:
60 parts of composite organic calcium, 24 parts of organic grease, 30 parts of organic amine, 9 parts of amino acid, 5 parts of organic acid, 1 part of organic salt and 0.1 part of solvent.
The organic lipid is water-soluble lipid, the organic amine is acrylamide, the amino acid is glycine, the organic acid is acetic acid, the organic salt is calcium acrylate, and the solvent is sodium bicarbonate water solution.
Firstly, weighing the raw material components according to the proportion, then fully mixing the raw materials, and uniformly mixing to obtain the water-like composite fiber denitration agent.
Example 2
70 parts of composite organic calcium, 20 parts of organic grease, 32 parts of organic amine, 5 parts of amino acid, 2 parts of organic salt and 0.09 part of solvent.
The organic lipid is cellulose, the organic amine is carbonic acid amide, the amino acid is arginine, the organic acid is crataegolic acid, the organic salt is sodium glycinate, and the solvent is aqueous solution of calcium bicarbonate.
Firstly, weighing the raw material components according to the proportion, then fully mixing the raw materials, and uniformly mixing to obtain the water-like composite fiber denitration agent.
Example 3
50 parts of composite organic calcium, 22 parts of organic grease, 23 parts of organic amine, 7 parts of amino acid, 7 parts of organic acid, 2 parts of organic salt and 0.08 part of solvent.
The organic lipid is cellulose, the organic amine is polyacrylamide, the amino acid is cysteine, the organic acid is oxalic acid, the organic salt is sodium crataegolate, and the solvent is aqueous solution of magnesium bicarbonate.
Firstly, weighing the raw material components according to the proportion, then fully mixing the raw materials, and uniformly mixing to obtain the water-like composite fiber denitration agent.
The physical and chemical properties of the composite fiber denitration agent of examples 1 to 3 are as follows:
appearance and properties of dark brown liquid.
The pH value is 9.0-12.0
Freezing point (deg.c): -10 to-15 DEG C
Relative density (water=1000): 1050 to 1090
Boiling point (DEG C) 140 DEG C
Concentration (mass ratio) of 0.6
Viscosity (20deg.C, cp) 2-6 (Water 1.02, diesel oil 30)
Solubility, namely, water and alcohol.
The application method of the composite fiber denitration agent is similar to that of the existing SNCR technology, firstly, a temperature interval (780-930 ℃) which is most suitable for the reaction of the composite fiber denitration agent is selected on a boiler flue, and a plurality of special efficient atomizing nozzles are arranged, so that the denitration agent is fully mixed with flue gas, and the zero-clearance coverage of the denitration reaction in the flue is realized. The prepared composite fiber denitration agent is delivered to a metering and distributing module through a storage tank by a delivery pump, then is accurately distributed to each spraying device, and is sprayed into the tail part of a boiler flue, catalytic cracking reaction is carried out at the high temperature of about 780-930 ℃, and active free radicals generated by cracking and NO in the flue gas are generated x Oxidation-reduction reaction is carried out under the condition of NO catalyst participation, and NO is removed x 。
Selecting a proper denitration position: the temperature in the non-flame zone is 780-930 ℃. The gas-liquid phase pressure at the spray gun is more than 0.4 MPa. The efficient atomizing spray gun is selected, the flow field simulates atomizing distribution, the zero-clearance coverage rate of the denitration agent liquid mist on the section of the flue is improved as much as possible, and necessary spray gun protection measures are adopted according to the actual condition of the boiler.
The foregoing is merely a preferred embodiment of the present invention and it should be noted that modifications and adaptations to those skilled in the art may be made without departing from the principles of the present invention, which are intended to be comprehended within the scope of the present invention.
Claims (9)
1. A composite fiber denitration agent is characterized in that: the raw materials of the composite material comprise the following components in parts by weight:
50-70 parts of composite organic calcium, 20-24 parts of organic grease, 23-32 parts of organic amine, 5-9 parts of amino acid, 2-7 parts of organic acid, 1-2 parts of organic salt and 0.08-0.1 part of solvent.
2. The composite fiber denitration agent according to claim 1, characterized in that: the organic lipid is one of water-soluble lipid and cellulose.
3. The composite fiber denitration agent according to claim 1, characterized in that: the organic amine is one of acrylamide, carbonamide and polyacrylamide.
4. The composite fiber denitration agent according to claim 1, characterized in that: the amino acid is one of glycine, arginine and cysteine.
5. The composite fiber denitration agent according to claim 1, characterized in that: the organic acid is one of acetic acid, acrylic acid, crataegolic acid and oxalic acid.
6. The composite fiber denitration agent according to claim 1, characterized in that: the organic salt is one of calcium acrylate, sodium glycinate, sodium glutamate and sodium crataegolate.
7. The composite fiber denitration agent according to claim 1, characterized in that: the solvent is an inorganic salt water solution.
8. The composite fiber denitration agent according to claim 7, characterized in that: the salt solution is aqueous solution of sodium bicarbonate, calcium bicarbonate, magnesium bicarbonate or calcium sulfate.
9. A method for preparing the composite fiber denitration agent as claimed in claim 1, which is characterized by comprising the following steps: the method comprises the following steps: firstly, weighing the raw material components according to the proportion, then fully mixing the raw materials, and uniformly mixing to obtain the water-like composite fiber denitration agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310070920.XA CN117427478A (en) | 2023-02-07 | 2023-02-07 | Composite fiber denitration agent and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310070920.XA CN117427478A (en) | 2023-02-07 | 2023-02-07 | Composite fiber denitration agent and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN117427478A true CN117427478A (en) | 2024-01-23 |
Family
ID=89548624
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310070920.XA Pending CN117427478A (en) | 2023-02-07 | 2023-02-07 | Composite fiber denitration agent and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117427478A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078517A (en) * | 2007-06-08 | 2007-11-28 | 华北电力大学 | Method for simultaneously removing SO2, NOx from coal-fired furnace |
| 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 |
| CN107243244A (en) * | 2017-06-16 | 2017-10-13 | 中国石油大学(华东) | Carbide slag and biological pyrolysis oil prepare biological desulphurization denitrfying agent and its application method |
| CN111167277A (en) * | 2020-01-19 | 2020-05-19 | 山东省昔利环境科技有限公司 | Preparation method of composite organic calcium-based denitration agent |
| CN112354336A (en) * | 2020-09-15 | 2021-02-12 | 山东莱顿能源技术有限公司 | Method for preparing desulfurizer and denitrifier from unburned carbon and application |
| CN113117475A (en) * | 2021-04-30 | 2021-07-16 | 山东省昔利环境科技有限公司 | Composite fiber denitration agent and preparation method thereof |
-
2023
- 2023-02-07 CN CN202310070920.XA patent/CN117427478A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101078517A (en) * | 2007-06-08 | 2007-11-28 | 华北电力大学 | Method for simultaneously removing SO2, NOx from coal-fired furnace |
| 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 |
| CN107243244A (en) * | 2017-06-16 | 2017-10-13 | 中国石油大学(华东) | Carbide slag and biological pyrolysis oil prepare biological desulphurization denitrfying agent and its application method |
| CN111167277A (en) * | 2020-01-19 | 2020-05-19 | 山东省昔利环境科技有限公司 | Preparation method of composite organic calcium-based denitration agent |
| CN112354336A (en) * | 2020-09-15 | 2021-02-12 | 山东莱顿能源技术有限公司 | Method for preparing desulfurizer and denitrifier from unburned carbon and application |
| CN113117475A (en) * | 2021-04-30 | 2021-07-16 | 山东省昔利环境科技有限公司 | Composite fiber denitration agent and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA1304914C (en) | Reduction of nitrogen- and carbon-based pollutants through the use of urea solutions | |
| CN105289233A (en) | Coal-fired boiler SNCR and SCR combined denitration system and method thereof | |
| CN105457465B (en) | A kind of SNCR SCR combine the design method of flue gas denitrification system technique | |
| CN202683062U (en) | Amino selective non-catalytic reduction (SNCR) flue gas denitration device | |
| CN107149867A (en) | Combustion product gases environment-friendly low-temperature composite denitration agent and preparation method thereof | |
| Latha et al. | A review on scr system for nox reduction in diesel engine | |
| CN102961956B (en) | CFD-based industrial boiler selective non-catalytic reduction (SNCR) denitration device | |
| CN103272470B (en) | A kind of additive for improving SNCR ammonia activity and application thereof | |
| CN103252159B (en) | Additive for denitration of smoke SNCR (selective non-catalytic reduction) and application thereof | |
| CN109569240A (en) | NO_x Reduction by Effective ionic liquid and its application method | |
| CN204933244U (en) | NOx removal device in coal-burning power plant's coal-powder boiler flue gas | |
| JPH0857261A (en) | Denitrification apparatus using aqueous solution of reducing agent | |
| CN117427478A (en) | Composite fiber denitration agent and preparation method thereof | |
| CN104785092A (en) | An SNCR flue gas denitration device | |
| CN207356908U (en) | A kind of highly-efficient glass kiln exhaust gas denitration device | |
| CN102728215A (en) | Composition and method for removing nitrogen oxides in desulfurizing tower | |
| CN102671532B (en) | Enhanced selective non-catalytic reduction flue gas denitrification method | |
| CN205145943U (en) | Coal fired boiler SNCR and SCR unite deNOx systems | |
| KR20090084055A (en) | The reduction agent injection system for increasing nh3 evolution in sncr process | |
| CN105536487A (en) | Multi-point injected ammonia water atomization reduction method for reducing NOx discharge of gas-fired boiler | |
| CN220648289U (en) | Small-section SNCR spray gun arrangement structure of sludge incinerator | |
| CN102698600A (en) | System for intelligently controlling flue gas denitrification of cement plant based on selective catalytic reduction (SCR) method | |
| CN109534359B (en) | Ammonia gas preparation device for flue gas denitration system | |
| CN111715050B (en) | Method for improving urea denitration efficiency by adopting alkaline alcohol solution | |
| CN113019109A (en) | Selective non-catalytic reduction desulfurization method |
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 |