CN110835131A - Oil removing agent for power plant - Google Patents
Oil removing agent for power plant Download PDFInfo
- Publication number
- CN110835131A CN110835131A CN201911327412.5A CN201911327412A CN110835131A CN 110835131 A CN110835131 A CN 110835131A CN 201911327412 A CN201911327412 A CN 201911327412A CN 110835131 A CN110835131 A CN 110835131A
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- CN
- China
- Prior art keywords
- power plant
- surfactant
- oil
- sewage
- oil removing
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/047—Breaking emulsions with separation aids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D19/00—Degasification of liquids
- B01D19/02—Foam dispersion or prevention
- B01D19/04—Foam dispersion or prevention by addition of chemical substances
- B01D19/0404—Foam dispersion or prevention by addition of chemical substances characterised by the nature of the chemical substance
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/04—Disinfection
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/08—Corrosion inhibition
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/12—Prevention of foaming
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
- C02F2305/04—Surfactants, used as part of a formulation or alone
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Thermal Sciences (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention provides a power plant oil removing agent, relates to the technical field of oil removing agents, solves the technical problems that the existing oil removing agent has long cleaning time, poor effect and a lot of foams, influences the oil removing effect and cleaning after oil removal, and is mainly prepared from the following raw materials in parts by weight: 17-22% of surfactant, 8-13% of solvent, 4-8% of alkali, 2.3-5% of inorganic salt, 2-8% of bactericidal algicide, 2-5% of defoaming agent and 2-4% of corrosion inhibitor, and the balance being water, wherein oil stains in the sewage discharged by the power plant are removed under the action of the surfactant, the solvent, the alkali and the inorganic salt, algae substances in the sewage discharged by the power plant are removed through the bactericidal algicide, so that the sewage is prevented from being directly discharged to pollute the environment, and the corrosion action of the degreasing agent on metal materials in contact with the sewage can be effectively relieved under the action of the corrosion inhibitor.
Description
Technical Field
The invention relates to the technical field of metal oil removing agents, in particular to an oil removing agent for a power plant, which is used for solving the technical problem that the oil removing effect of the existing oil removing agent for the power plant is poor.
Background
The oil used for power plants generally comprises the following components: the boiler combustion-supporting oil is generally heavy oil or light diesel oil; lubricating oil for a steam turbine; fire resistant oil used by a speed regulating system of the steam turbine; lubricating oil used for common mechanical equipment; lubricating grease is commonly known as butter; hydraulic oil; transformer oil; the oil remover is a complex mixture composed of organic and inorganic chemicals of water matrix, and is a novel industrial oil remover developed by utilizing the principles of 'emulsification' and 'saponification'. The cleaning agent has wide application in the industrial fields of metal processing, food, textile, traffic, ships, buildings, electric appliances, medicines, chemical engineering and the like, although the cleaning surface matrixes are different, the cleaning aim is 0 consistency, the cleanliness of the matrix surface is recovered and the integrity of the matrix surface is maintained, and the oil removing agent is mainly prepared from various surfactants, builders and the like. Is in the form of liquid cleaning agent, so that it is easy to use. In modern industrial cleaning, the latest oil removing agent and the latest oil removing agent are generally cleaned by ultrasonic cleaning or spraying cleaning, and the oil removing agents have different components, namely metal oil removal and plastic oil removal.
The existing oil removing agent has the defects of long cleaning time, poor effect, much foam, influence on oil removing effect and cleaning after oil removing, contains various toxic and harmful substances such as sodium nitrite and the like, pollutes the environment and causes harm to the body of an operator, and the invention provides the oil removing agent for the power plant in order to solve the technical problems.
Disclosure of Invention
The invention aims to provide a power plant oil removal agent, and solves the technical problems that the existing oil removal agent is long in cleaning time, poor in effect and high in foam, the oil removal effect is influenced, and cleaning after oil removal is influenced.
In order to solve the technical problems, the invention adopts the following technical scheme:
the invention provides a power plant oil removing agent which is mainly prepared from the following raw materials in parts by weight: 17-22% of surfactant, 8-13% of solvent, 4-8% of alkali, 2.3-5% of inorganic salt, 2-8% of bactericidal algicide, 2-5% of defoaming agent, 2-4% of corrosion inhibitor and the balance of water.
Preferably, the surfactant is a nonionic surfactant, and the nonionic surfactant is any two of fatty acid polyoxyethylene ester, alkylphenol ethoxylate and fatty alcohol polyoxyethylene ether.
Preferably, the solvent is a mixture of ethanol and isopropanol in a mass ratio of 3: 1.
Preferably, the defoaming agent mainly comprises the following substances in percentage by mass: 5-7% of fatty acid, 10-13% of ethyl cellulose, 10-12% of polyacrylamide and the balance of water.
Preferably, the bactericidal algicide mainly comprises the following substances in percentage by mass: 50-60% of dodecyl dimethyl benzyl ammonium chloride, 5-chloro-2-methyl-4-isothiazoline-3-ketone, and the balance of water.
Preferably, the corrosion inhibitor is a mixture of sodium benzoate and triethanolamine in a mass ratio of 1.5: 2.
Preferably, the detergent also comprises a builder, wherein the builder is sodium benzoate.
The working principle and the beneficial effects of the invention are as follows:
(1) the oil stain in the sewage discharged by the power plant is removed under the action of the surfactant, the solvent, the alkali and the inorganic salt, the algae substances in the sewage discharged by the power plant are removed through the sterilizing algicide to avoid directly discharging the algae substances to pollute the environment, and the corrosion of the oil remover on metal materials in contact with the sewage can be effectively relieved under the action of the corrosion inhibitor;
(2) the surfactant is a nonionic surfactant which is any two of fatty acid polyoxyethylene ester, alkylphenol ethoxylate and fatty alcohol polyoxyethylene ether, and by adopting two of fatty acid polyoxyethylene ester, alkylphenol ethoxylate and fatty alcohol polyoxyethylene ether as the surfactants, good emulsification on oil stains can be effectively realized;
(3) the defoaming agent mainly comprises the following substances in percentage: 5-7% of fatty acid, 10-13% of ethyl cellulose, 10-12% of polyacrylamide and the balance of water, and the difficulty of cleaning can be reduced by the arrangement of a defoaming agent;
(4) the bactericidal algicide mainly comprises the following substances in percentage: the bactericidal algicide comprises 50-60% of dodecyl dimethyl benzyl ammonium chloride, 5-chloro-2-methyl-4-isothiazoline-3-ketone and 5-12% of water in balance, and can effectively prevent the environment from being polluted by algae in sewage discharged to the environment.
(5) The corrosion inhibitor is a mixture of sodium benzoate and triethanolamine according to a mass ratio of 1.5:2, and further comprises a builder, wherein the builder is sodium benzoate, and the corrosion effect on metal materials contacted with sewage can be effectively relieved through the arrangement of the corrosion inhibitor.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to examples, but it will be understood by those skilled in the art that the following examples are only illustrative of the present invention and should not be construed as limiting the scope of the present invention. The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available commercially.
Example 1
The power plant oil remover is mainly prepared from the following raw materials in parts by weight: the health-care food is mainly prepared from the following raw materials in parts by weight: 17% of surfactant, 8% of solvent, 4% of alkali, 2.3% of inorganic salt, 2% of bactericidal algicide, 2% of defoaming agent, 2% of corrosion inhibitor and the balance of water.
Preferably, the surfactant is a nonionic surfactant which is a mixture of fatty acid polyoxyethylene ester and alkylphenol polyoxyethylene ether, and the mixture of the fatty acid polyoxyethylene ester and the alkylphenol polyoxyethylene ether is used as the surfactant, so that good emulsification effect on oil stains can be effectively realized.
Preferably, the solvent is a mixture of ethanol and isopropanol in a mass ratio of 3: 1.
Preferably, the defoaming agent mainly comprises the following substances in percentage by mass: 5% of fatty acid, 10% of ethyl cellulose, 10% of polyacrylamide and the balance of water, and the difficulty of cleaning can be reduced by arranging the defoaming agent.
Preferably, the bactericidal algicide mainly comprises the following substances in percentage by mass: the bactericidal algicide comprises 50% of dodecyl dimethyl benzyl ammonium chloride, 5-chloro-2-methyl-4-isothiazoline-3-ketone and the balance of water, and can effectively prevent algae in sewage from being discharged into the environment to pollute the environment.
Preferably, the corrosion inhibitor is a mixture of sodium benzoate and triethanolamine according to a mass ratio of 1.5:2, and the corrosion inhibitor further comprises a builder, wherein the builder is sodium benzoate, and the corrosion inhibitor can effectively relieve the corrosion effect on metal materials contacted with sewage.
The oil stain in the sewage discharged by the power plant is removed under the action of the surfactant, the solvent, the alkali and the inorganic salt, the algae substances in the sewage discharged by the power plant are removed through the sterilizing algicide, the sewage is prevented from being directly discharged to pollute the environment, and the corrosion of the oil remover on metal materials in contact with the sewage can be effectively relieved under the action of the corrosion inhibitor.
Example 2
The power plant oil remover is mainly prepared from the following raw materials in parts by weight: the health-care food is mainly prepared from the following raw materials in parts by weight: 20% of surfactant, 10% of solvent, 5.5% of alkali, 3.5% of inorganic salt, 6% of bactericidal algicide, 3% of defoaming agent, 3% of corrosion inhibitor and the balance of water.
Preferably, the surfactant is a nonionic surfactant which is a mixture of alkylphenol polyoxyethylene and fatty alcohol polyoxyethylene, and the mixture of alkylphenol polyoxyethylene and fatty alcohol polyoxyethylene is used as the surfactant, so that good emulsification on oil stains can be effectively realized.
Preferably, the solvent is a mixture of ethanol and isopropanol in a mass ratio of 3: 1.
Preferably, the defoaming agent mainly comprises the following substances in percentage by mass: the cleaning agent comprises 6% of fatty acid, 11.5% of ethyl cellulose, 11% of polyacrylamide and the balance of water, and the difficulty of cleaning can be reduced by arranging the defoaming agent.
Preferably, the bactericidal algicide mainly comprises the following substances in percentage by mass: 55% of dodecyl dimethyl benzyl ammonium chloride, 5-chloro-2-methyl-4-isothiazoline-3-ketone 7 and the balance of water, and the algae in the sewage can be effectively prevented from being discharged to the environment to pollute the environment through the arrangement of the bactericidal algicide.
Preferably, the corrosion inhibitor is a mixture of sodium benzoate and triethanolamine according to a mass ratio of 1.5:2, and the corrosion inhibitor further comprises a builder, wherein the builder is sodium benzoate, and the corrosion inhibitor can effectively relieve the corrosion effect on metal materials contacted with sewage.
The oil stain in the sewage discharged by the power plant is removed under the action of the surfactant, the solvent, the alkali and the inorganic salt, the algae substances in the sewage discharged by the power plant are removed through the sterilizing algicide, the sewage is prevented from being directly discharged to pollute the environment, and the corrosion of the oil remover on metal materials in contact with the sewage can be effectively relieved under the action of the corrosion inhibitor.
Example 3
The power plant oil remover is mainly prepared from the following raw materials in parts by weight: the health-care food is mainly prepared from the following raw materials in parts by weight: 22% of surfactant, 13% of solvent, 8% of alkali, 5% of inorganic salt, 8% of bactericidal algicide, 5% of defoaming agent, 4% of corrosion inhibitor and the balance of water.
Preferably, the surfactant is a nonionic surfactant which is a mixture of fatty acid polyoxyethylene ester and fatty alcohol polyoxyethylene ether, and the mixture of the fatty acid polyoxyethylene ester and the fatty alcohol polyoxyethylene ether is used as the surfactant, so that good emulsification effect on oil stains can be effectively realized.
Preferably, the solvent is a mixture of ethanol and isopropanol in a mass ratio of 3: 1.
Preferably, the defoaming agent mainly comprises the following substances in percentage by mass: 7% of fatty acid, 13% of ethyl cellulose, 12% of polyacrylamide and the balance of water, and the difficulty of cleaning can be reduced by arranging the defoaming agent.
Preferably, the bactericidal algicide mainly comprises the following substances in percentage by mass: the bactericidal algicide comprises 60% of dodecyl dimethyl benzyl ammonium chloride, 12% of 5-chloro-2-methyl-4-isothiazoline-3-ketone and the balance of water, and can effectively prevent algae in sewage from being discharged into the environment to pollute the environment.
Preferably, the corrosion inhibitor is a mixture of sodium benzoate and triethanolamine according to a mass ratio of 1.5:2, and the corrosion inhibitor further comprises a builder, wherein the builder is sodium benzoate, and the corrosion inhibitor can effectively relieve the corrosion effect on metal materials contacted with sewage.
The oil stain in the sewage discharged by the power plant is removed under the action of the surfactant, the solvent, the alkali and the inorganic salt, the algae substances in the sewage discharged by the power plant are removed through the sterilizing algicide, the sewage is prevented from being directly discharged to pollute the environment, and the corrosion of the oil remover on metal materials in contact with the sewage can be effectively relieved under the action of the corrosion inhibitor.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like made within the scope of the present invention are intended to be included therein.
Claims (7)
1. The oil removing agent for the power plant is characterized by being mainly prepared from the following raw materials in parts by weight: 17-22% of surfactant, 8-13% of solvent, 4-8% of alkali, 2.3-5% of inorganic salt, 2-8% of bactericidal algicide, 2-5% of defoaming agent, 2-4% of corrosion inhibitor and the balance of water.
2. The power plant oil remover according to claim 1, wherein the surfactant is a nonionic surfactant, and the nonionic surfactant is any two of fatty acid polyoxyethylene ester, alkylphenol ethoxylate and fatty alcohol polyoxyethylene ether.
3. The power plant oil remover according to claim 1, wherein the solvent is a mixture of ethanol and isopropanol in a mass ratio of 3: 1.
4. The power plant oil remover according to claim 1, wherein the defoamer comprises the following substances in percentage by mass: 5-7% of fatty acid, 10-13% of ethyl cellulose, 10-12% of polyacrylamide and the balance of water.
5. The power plant oil removal agent of claim 1, wherein the bactericidal algicide mainly comprises the following substances by mass percent: 50-60% of dodecyl dimethyl benzyl ammonium chloride, 5-chloro-2-methyl-4-isothiazoline-3-ketone, and the balance of water.
6. The power plant oil remover according to claim 1, wherein the corrosion inhibitor is a mixture of sodium benzoate and triethanolamine in a mass ratio of 1.5: 2.
7. The power plant oil remover according to any of claims 1-6, further comprising a builder, wherein the builder is sodium benzoate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911327412.5A CN110835131A (en) | 2019-12-20 | 2019-12-20 | Oil removing agent for power plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911327412.5A CN110835131A (en) | 2019-12-20 | 2019-12-20 | Oil removing agent for power plant |
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| Publication Number | Publication Date |
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| CN110835131A true CN110835131A (en) | 2020-02-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911327412.5A Pending CN110835131A (en) | 2019-12-20 | 2019-12-20 | Oil removing agent for power plant |
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| CN (1) | CN110835131A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876790A (en) * | 2020-07-29 | 2020-11-03 | 甘肃泰升化工科技有限公司 | Oil removing agent and preparation method thereof |
| CN114107998A (en) * | 2021-12-06 | 2022-03-01 | 佛山市顺德区正泽精细化工有限公司 | Environment-friendly cleaning degreaser |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419975A (en) * | 2015-10-26 | 2016-03-23 | 国网山东海阳市供电公司 | Dustproof and antirust surface cleaning treatment agent for electric power facilities |
| CN105908208A (en) * | 2016-03-28 | 2016-08-31 | 绵阳维克切削液有限责任公司 | Cold-rolled silicon steel normal-temperature zero-release oil removal agent and preparation method thereof |
| CN107502910A (en) * | 2017-08-25 | 2017-12-22 | 广东长菱空调冷气机制造有限公司 | A kind of aqua type metal surface greasy dirt cleaning agent of Teat pump boiler production |
| CN108990997A (en) * | 2018-07-31 | 2018-12-14 | 成都市兴蓉再生能源有限公司 | A kind of composite sterilizer algicide and sterilization algae removal method |
| CN109575883A (en) * | 2018-12-14 | 2019-04-05 | 中国石油集团川庆钻探工程有限公司 | A kind of highly effective oil remover and preparation method and application |
| CN109796069A (en) * | 2018-12-05 | 2019-05-24 | 天津正达科技有限责任公司 | A kind of Clear circulating cooling water system non oxidizing bactericide |
-
2019
- 2019-12-20 CN CN201911327412.5A patent/CN110835131A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105419975A (en) * | 2015-10-26 | 2016-03-23 | 国网山东海阳市供电公司 | Dustproof and antirust surface cleaning treatment agent for electric power facilities |
| CN105908208A (en) * | 2016-03-28 | 2016-08-31 | 绵阳维克切削液有限责任公司 | Cold-rolled silicon steel normal-temperature zero-release oil removal agent and preparation method thereof |
| CN107502910A (en) * | 2017-08-25 | 2017-12-22 | 广东长菱空调冷气机制造有限公司 | A kind of aqua type metal surface greasy dirt cleaning agent of Teat pump boiler production |
| CN108990997A (en) * | 2018-07-31 | 2018-12-14 | 成都市兴蓉再生能源有限公司 | A kind of composite sterilizer algicide and sterilization algae removal method |
| CN109796069A (en) * | 2018-12-05 | 2019-05-24 | 天津正达科技有限责任公司 | A kind of Clear circulating cooling water system non oxidizing bactericide |
| CN109575883A (en) * | 2018-12-14 | 2019-04-05 | 中国石油集团川庆钻探工程有限公司 | A kind of highly effective oil remover and preparation method and application |
Non-Patent Citations (2)
| Title |
|---|
| 赵洪波等: "《胶体与表面化学理论及应用研究》", 31 March 2016, 黑龙江大学出版社 * |
| 马建中: "《皮革化学品的合成原理与应用技术》", 31 August 2009, 中国轻工业出版社 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111876790A (en) * | 2020-07-29 | 2020-11-03 | 甘肃泰升化工科技有限公司 | Oil removing agent and preparation method thereof |
| CN114107998A (en) * | 2021-12-06 | 2022-03-01 | 佛山市顺德区正泽精细化工有限公司 | Environment-friendly cleaning degreaser |
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Application publication date: 20200225 |
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