CN114870903B - Mixed catalyst for dissolving trace colloidal iron in water vapor of power station - Google Patents
Mixed catalyst for dissolving trace colloidal iron in water vapor of power station Download PDFInfo
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- CN114870903B CN114870903B CN202210361398.6A CN202210361398A CN114870903B CN 114870903 B CN114870903 B CN 114870903B CN 202210361398 A CN202210361398 A CN 202210361398A CN 114870903 B CN114870903 B CN 114870903B
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- China
- Prior art keywords
- mixed catalyst
- colloidal iron
- power station
- iron
- water vapor
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 title claims abstract description 104
- 229910052742 iron Inorganic materials 0.000 title claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 33
- 239000003054 catalyst Substances 0.000 title claims abstract description 28
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910002651 NO3 Inorganic materials 0.000 claims abstract description 18
- NHNBFGGVMKEFGY-UHFFFAOYSA-N Nitrate Chemical compound [O-][N+]([O-])=O NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000654 additive Substances 0.000 claims abstract description 17
- 235000019270 ammonium chloride Nutrition 0.000 claims abstract description 14
- 230000000996 additive effect Effects 0.000 claims abstract description 10
- JRKICGRDRMAZLK-UHFFFAOYSA-L peroxydisulfate Chemical compound [O-]S(=O)(=O)OOS([O-])(=O)=O JRKICGRDRMAZLK-UHFFFAOYSA-L 0.000 claims description 16
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 6
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical compound [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 6
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims description 4
- USFZMSVCRYTOJT-UHFFFAOYSA-N Ammonium acetate Chemical compound N.CC(O)=O USFZMSVCRYTOJT-UHFFFAOYSA-N 0.000 claims description 4
- 239000005695 Ammonium acetate Substances 0.000 claims description 4
- 235000019257 ammonium acetate Nutrition 0.000 claims description 4
- 229940043376 ammonium acetate Drugs 0.000 claims description 4
- LCPVQAHEFVXVKT-UHFFFAOYSA-N 2-(2,4-difluorophenoxy)pyridin-3-amine Chemical compound NC1=CC=CN=C1OC1=CC=C(F)C=C1F LCPVQAHEFVXVKT-UHFFFAOYSA-N 0.000 claims description 3
- VMHLLURERBWHNL-UHFFFAOYSA-M Sodium acetate Chemical compound [Na+].CC([O-])=O VMHLLURERBWHNL-UHFFFAOYSA-M 0.000 claims description 3
- 239000004280 Sodium formate Substances 0.000 claims description 3
- 239000004323 potassium nitrate Substances 0.000 claims description 3
- 235000010333 potassium nitrate Nutrition 0.000 claims description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 claims description 3
- 239000001632 sodium acetate Substances 0.000 claims description 3
- 235000017281 sodium acetate Nutrition 0.000 claims description 3
- HLBBKKJFGFRGMU-UHFFFAOYSA-M sodium formate Chemical compound [Na+].[O-]C=O HLBBKKJFGFRGMU-UHFFFAOYSA-M 0.000 claims description 3
- 235000019254 sodium formate Nutrition 0.000 claims description 3
- 239000004317 sodium nitrate Substances 0.000 claims description 3
- 235000010344 sodium nitrate Nutrition 0.000 claims description 3
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Substances [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 abstract description 10
- 239000002253 acid Substances 0.000 abstract description 6
- 238000001514 detection method Methods 0.000 abstract description 5
- 239000007800 oxidant agent Substances 0.000 abstract description 5
- 230000001590 oxidative effect Effects 0.000 abstract description 5
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 3
- 229910001870 ammonium persulfate Inorganic materials 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 abstract 1
- 239000007788 liquid Substances 0.000 abstract 1
- 230000003647 oxidation Effects 0.000 abstract 1
- 238000007254 oxidation reaction Methods 0.000 abstract 1
- 230000029087 digestion Effects 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- -1 iron ions Chemical class 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
Classifications
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/26—Catalysts comprising hydrides, coordination complexes or organic compounds containing in addition, inorganic metal compounds not provided for in groups B01J31/02 - B01J31/24
-
- 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
- B01J35/00—Catalysts, in general, characterised by their form or physical properties
- B01J35/19—Catalysts containing parts with different compositions
-
- 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
- B01J27/02—Sulfur, selenium or tellurium; Compounds thereof
-
- 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
- B01J27/24—Nitrogen compounds
-
- 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
- B01J27/24—Nitrogen compounds
- B01J27/25—Nitrates
-
- 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
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/02—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides
- B01J31/04—Catalysts comprising hydrides, coordination complexes or organic compounds containing organic compounds or metal hydrides containing carboxylic acids or their salts
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Catalysts (AREA)
Abstract
The invention relates to the technical field of chemical industry, in particular to a mixed catalyst for dissolving trace colloidal iron in water vapor of a power station, which is formed by mixing ammonium persulfate, ammonium chloride, nitrate and an additive, wherein the high-efficiency dissolution of trace colloidal iron in water can be realized by adding a quantitative mixed catalyst into a water sample containing the colloidal iron, the problems of environmental pollution, complex steps, long time consumption and the like caused by oxidation dissolution by using acid liquid or oxidant and heating treatment are avoided, meanwhile, the mixed catalyst does not contain iron elements, the detection of the iron content in the trace colloidal iron of the water vapor of the power station is not influenced, the use is simple, the cost is low, and the dissolution rate of the colloidal iron can be improved by using the mixed catalyst, so that the dissolution efficiency and the dissolution rate of the colloidal iron are improved.
Description
Technical Field
The invention relates to the technical field of chemical industry, in particular to a mixed catalyst for dissolving trace colloidal iron in water vapor of a power station.
Background
At present, when detecting the total iron in the water vapor of the power station, since most of the existing forms of the iron in the water vapor of the power station are colloidal iron, the colloidal iron must be firstly converted into dissolved iron before the water sample is taken for detection, and usually, acid liquor or oxidant is added and digestion is carried out to convert the colloidal iron into the dissolved iron, and then the accurate content of the total iron can be obtained after the measurement. However, because acid liquor or oxidant needs to be added during detection and digestion is needed, the environment pollution and the steps are complicated, the testing and detecting workload in the measuring process is large, the time consumption is long, and especially the total iron content in the water cannot be timely monitored during the shutdown and starting of a unit to guide the water working condition, so that the energy conservation and consumption reduction of a power station are not facilitated.
Disclosure of Invention
The invention aims to provide a mixed catalyst for dissolving trace colloidal iron in water vapor of a power station, which is used for realizing complete dissolution of the colloidal iron in the water vapor of the power station under the condition of no acid addition.
The technical problem of the invention is as follows:
the mixed catalyst for dissolving trace colloidal iron in the water vapor of the power station is characterized by being formed by mixing persulfate, ammonium chloride, nitrate and additives.
Further limited, the mixed catalyst for dissolving trace colloidal iron in the water vapor of the power station is formed by mixing 20-60% of persulfate, 10-40% of ammonium chloride, 25-50% of nitrate and 5-20% of additive in percentage by mass.
Further defined, the mixed catalyst for dissolving trace colloidal iron in the water vapor of the power station is formed by mixing 30-50% of persulfate, 15-30% of ammonium chloride, 25-40% of nitrate and 5-15% of additive in percentage by mass.
Further defined, the mixed catalyst for dissolving trace colloidal iron in the water vapor of the power station is formed by mixing 40% of persulfate, 20% of ammonium chloride, 30% of nitrate and 10% of additive in percentage by mass.
Further defined, the nitrate is one or more of sodium nitrate, ammonium nitrate and potassium nitrate.
Further defined, the persulfate is one or more of sodium persulfate and potassium persulfate.
Further defined, the additive is one or more of sodium acetate, sodium formate, ammonium acetate.
The invention has the beneficial effects that:
The method has the advantages that the method utilizes the mixture consisting of persulfate, ammonium chloride, nitrate and additives, can realize high-efficiency dissolution of colloidal iron by adding the mixture into a water sample, avoids the problems of environmental pollution, complex steps, long time consumption and the like caused by utilizing the addition of acid liquor or oxidant and carrying out digestion to convert the colloidal iron into dissolved iron, and meanwhile, the mixed catalyst does not contain iron elements and can not influence the detection of the content of iron in trace colloidal iron in the water sample of a power station, so that the method is simple to use and low in cost, and can simultaneously improve the dissolution and conversion speed of the colloidal iron and the solution speed and efficiency of the colloidal iron by utilizing the mixed catalyst.
Detailed Description
The invention is further described below, and the mixed catalyst for dissolving trace colloidal iron in water vapor of a power station is formed by mixing persulfate, ammonium chloride, nitrate and additives, specifically, the mixed catalyst for dissolving trace colloidal iron in water vapor of a power station is formed by mixing 20-60% by mass of persulfate, 10-40% by mass of ammonium chloride, 25-50% by mass of nitrate and 5-20% by mass of additives, and further, the mixed catalyst for dissolving trace colloidal iron in water vapor of a power station is formed by mixing 30-50% by mass of persulfate, 15-30% by mass of ammonium chloride, 25-40% by mass of nitrate and 5-15% by mass of additives, and most preferably, the mixed catalyst for dissolving trace colloidal iron in water vapor of a power station is formed by mixing 40% by mass of persulfate, 20% by mass of ammonium chloride, 30% by mass of nitrate and 10% by mass of additives.
Wherein the persulfate is one or more of sodium persulfate and potassium persulfate, preferably ammonium persulfate, namely (NH 4)2S2O8;
wherein the nitrate can be selected from one or more of sodium nitrate, ammonium nitrate and potassium nitrate, preferably ammonium nitrate, namely NH 4NO3;
wherein the additive is one or more of sodium acetate, sodium formate and ammonium acetate, preferably ammonium acetate, namely NH 4 Ac.
When the mixed catalyst provided by the invention is used, colloidal iron below 1mg/L in water vapor of a power station can be completely converted into dissolved iron ions by adding the mixed catalyst into a water sample containing the colloidal iron after proper stirring, so that the problems of environmental pollution, complex steps, long time consumption and the like caused by adding acid liquor or oxidant and performing digestion to convert the colloidal iron into dissolved iron are avoided, meanwhile, the detection of the content of trace colloidal iron in the water sample of the power station is not influenced by the iron element in the mixed catalyst, the use is simple, the cost is low, the dissolution and conversion speed of the colloidal iron can be improved by using the mixed catalyst, and the dissolution speed and the efficiency of the colloidal iron are improved.
Claims (3)
1. The mixed catalyst for dissolving trace colloidal iron in the water vapor of the power station is characterized by being formed by mixing persulfate, ammonium chloride, nitrate and additives;
The nitrate is one or more of sodium nitrate, ammonium nitrate and potassium nitrate;
the persulfate is one or more of sodium persulfate and potassium persulfate;
the additive is one or more of sodium acetate, sodium formate and ammonium acetate;
The mixed catalyst for dissolving trace colloidal iron in the water vapor of the power station is formed by mixing 20-60% of persulfate, 10-40% of ammonium chloride, 25-50% of nitrate and 5-20% of additive in percentage by mass.
2. The mixed catalyst for dissolving trace colloidal iron in water vapor of power station according to claim 1, wherein the mixed catalyst for dissolving trace colloidal iron in water vapor of power station is prepared by mixing 30-50% of persulfate, 15-30% of ammonium chloride, 25-40% of nitrate and 5-15% of additive in percentage by mass.
3. The mixed catalyst for dissolving trace amounts of colloidal iron in water vapor of power station according to claim 2, wherein the mixed catalyst for dissolving trace amounts of colloidal iron in water vapor of power station is prepared by mixing persulfate 40% by mass, ammonium chloride 20% by mass, nitrate 30% by mass and additive 10% by mass.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210361398.6A CN114870903B (en) | 2022-04-07 | 2022-04-07 | Mixed catalyst for dissolving trace colloidal iron in water vapor of power station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210361398.6A CN114870903B (en) | 2022-04-07 | 2022-04-07 | Mixed catalyst for dissolving trace colloidal iron in water vapor of power station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114870903A CN114870903A (en) | 2022-08-09 |
| CN114870903B true CN114870903B (en) | 2024-04-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210361398.6A Active CN114870903B (en) | 2022-04-07 | 2022-04-07 | Mixed catalyst for dissolving trace colloidal iron in water vapor of power station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114870903B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56118666A (en) * | 1980-02-23 | 1981-09-17 | Tohoku Electric Power Co Inc | Process of removing iron content from total iron measuring reagent |
| JPS63201564A (en) * | 1987-02-18 | 1988-08-19 | Mitsubishi Heavy Ind Ltd | Method for dissolving iron-component of aqueous solution containing colloidal iron-component |
| CN110426391A (en) * | 2019-07-08 | 2019-11-08 | 广州海关技术中心 | The measuring method of all iron content in a kind of iron ore |
| CN111289499A (en) * | 2020-04-21 | 2020-06-16 | 斯瑞尔环境科技股份有限公司 | Method for simultaneously detecting multiple trace elements in iron-containing waste acid |
| CN113567376A (en) * | 2021-07-29 | 2021-10-29 | 北京京能电力股份有限公司 | Device and method for measuring concentration of trace iron ions in water vapor of power plant |
-
2022
- 2022-04-07 CN CN202210361398.6A patent/CN114870903B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56118666A (en) * | 1980-02-23 | 1981-09-17 | Tohoku Electric Power Co Inc | Process of removing iron content from total iron measuring reagent |
| JPS63201564A (en) * | 1987-02-18 | 1988-08-19 | Mitsubishi Heavy Ind Ltd | Method for dissolving iron-component of aqueous solution containing colloidal iron-component |
| CN110426391A (en) * | 2019-07-08 | 2019-11-08 | 广州海关技术中心 | The measuring method of all iron content in a kind of iron ore |
| CN111289499A (en) * | 2020-04-21 | 2020-06-16 | 斯瑞尔环境科技股份有限公司 | Method for simultaneously detecting multiple trace elements in iron-containing waste acid |
| CN113567376A (en) * | 2021-07-29 | 2021-10-29 | 北京京能电力股份有限公司 | Device and method for measuring concentration of trace iron ions in water vapor of power plant |
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|---|---|
| CN114870903A (en) | 2022-08-09 |
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