CN111363633A - Oil dirt cleaning agent for low-temperature methanol washing device - Google Patents
Oil dirt cleaning agent for low-temperature methanol washing device Download PDFInfo
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- CN111363633A CN111363633A CN201811595671.1A CN201811595671A CN111363633A CN 111363633 A CN111363633 A CN 111363633A CN 201811595671 A CN201811595671 A CN 201811595671A CN 111363633 A CN111363633 A CN 111363633A
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/83—Mixtures of non-ionic with anionic compounds
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/046—Salts
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- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/06—Phosphates, including polyphosphates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/02—Inorganic compounds ; Elemental compounds
- C11D3/04—Water-soluble compounds
- C11D3/08—Silicates
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/16—Organic compounds
- C11D3/26—Organic compounds containing nitrogen
- C11D3/28—Heterocyclic compounds containing nitrogen in the ring
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D3/00—Other compounding ingredients of detergent compositions covered in group C11D1/00
- C11D3/39—Organic or inorganic per-compounds
- C11D3/3942—Inorganic per-compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/22—Sulfonic acids or sulfuric acid esters; Salts thereof derived from aromatic compounds
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/02—Anionic compounds
- C11D1/12—Sulfonic acids or sulfuric acid esters; Salts thereof
- C11D1/29—Sulfates of polyoxyalkylene ethers
-
- C—CHEMISTRY; METALLURGY
- C11—ANIMAL OR VEGETABLE OILS, FATS, FATTY SUBSTANCES OR WAXES; FATTY ACIDS THEREFROM; DETERGENTS; CANDLES
- C11D—DETERGENT COMPOSITIONS; USE OF SINGLE SUBSTANCES AS DETERGENTS; SOAP OR SOAP-MAKING; RESIN SOAPS; RECOVERY OF GLYCEROL
- C11D1/00—Detergent compositions based essentially on surface-active compounds; Use of these compounds as a detergent
- C11D1/66—Non-ionic compounds
- C11D1/72—Ethers of polyoxyalkylene glycols
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Detergent Compositions (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses an oil stain cleaning agent for a low-temperature methanol washing device, which comprises the following components in parts by weight: comprises 1-4 parts of sodium tripolyphosphate, 0.3-1 part of sodium metasilicate, 0.5-2 parts of sodium dodecyl benzene sulfonate, 0.2-0.5 part of emulsifier, 1-5 parts of sodium hypochlorite, 0.3-0.6 part of urotropine, 0.2-0.8 part of ethoxylated alkyl sodium sulfate, 0.2-0.6 part of hydrogen peroxide and the balance of water. The emulsifier is alkylphenol polyoxyethylene OP-10 or nonylphenol polyoxyethylene TX-10 or a mixture of the two. The invention has the beneficial effects that: the preparation method is simple and convenient, the preparation cost is low, the oil dirt removing effect is good, the dirt removing effect is stable, the corrosion to equipment is small, and the cleaning agent is alkalescent.
Description
Technical Field
The invention relates to the technical field of cleaning agents, and particularly relates to an oil stain cleaning agent for a low-temperature methanol washing device.
Background
The low-temperature methanol washing process adopts a physical absorption method, is an acid gas purification process, uses cold methanol as an acid gas absorption liquid, utilizes the physical characteristic that the methanol has extremely high solubility to acid gases at the low temperature of about minus 60 ℃, simultaneously selectively absorbs HS, CO, various organic sulfur and other impurities in feed gas in sections, and is mostly adopted on large-scale ammonia synthesis devices taking residual oil and coal as raw materials. The low-temperature methanol washing device is adopted in the industries of general petroleum refining, petrochemical industry and the like, deodorization and oil dirt removal are needed to be carried out after the low-temperature methanol washing device is used for a period of time, and if the oil dirt of the devices is not cleaned for a long time, the normal operation of equipment can be seriously influenced, and economic loss is caused.
At present, a common cleaning means is to use strong acid and strong base to soak and clean, so that the cleaning can be realized, but corrosion damage to equipment can be inevitably caused in the cleaning process, and meanwhile, the generated waste liquid of strong acid and strong base has great pollution to the environment and harm to human bodies. With the development of economy, people have stronger awareness on the protection of the environment and the safety of the human body. Therefore, for economic development of society and environmental protection, it is necessary to develop a special detergent with better safety and economy.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides the oil stain cleaning agent for the low-temperature methanol washing device, which has the advantages of simple and convenient preparation method, low preparation cost, good oil stain removing effect, stable scale removing effect, small corrosion to equipment and alkalescence.
The invention discloses an oil stain cleaning agent for a low-temperature methanol washing device, which comprises the following components in parts by weight: comprises 1-4 parts of sodium tripolyphosphate, 0.3-1 part of sodium metasilicate, 0.5-2 parts of sodium dodecyl benzene sulfonate, 0.2-0.5 part of emulsifier, 1-5 parts of sodium hypochlorite, 0.3-0.6 part of urotropine, 0.2-0.8 part of ethoxylated alkyl sodium sulfate, 0.2-0.6 part of hydrogen peroxide and the balance of water.
The emulsifier is alkylphenol polyoxyethylene OP-10 or nonylphenol polyoxyethylene TX-10 or a mixture of the two.
The oil stain cleaning agent for the low-temperature methanol washing device has the beneficial effects that:
1) according to the component composition and the physical properties of the components, the cleaning agent is alkaline, and the pH value is about 9.5 through actual measurement, namely the cleaning agent is alkalescent, so that compared with the conventional cleaning method adopting strong acid and strong base, the cleaning agent can reduce the corrosion damage to equipment, and meanwhile, the generated alkalescent waste liquid is easy to neutralize, so that the environmental protection pressure is reduced.
2) The sodium tripolyphosphate in the cleaning agent has a strong chelating effect on heavy metal ions, can capture metal components in dirt, and can promote dissociation and dispersion of solid dirt by matching with the permeability of sodium metasilicate; the sodium dodecyl benzene sulfonate and the alkylphenol polyoxyethylene are compounded for use, so that the removal of oily dirt can be better promoted; the four components are matched for use, and the oil stain and oil stain removing agent has a good removing effect on oil stains attached to the inner wall of equipment of the low-temperature methanol washing device.
Detailed Description
Example 1.
The invention relates to an oil stain cleaning agent for a low-temperature methanol washing device, which specifically comprises the following components: 2.5 kg of sodium tripolyphosphate, 0.5 kg of sodium metasilicate, 0.6 kg of sodium dodecyl benzene sulfonate, 0.3 kg of alkylphenol polyoxyethylene, 2 kg of sodium hypochlorite, 0.4 kg of urotropin, 0.5 kg of ethoxylated sodium alkyl sulfate and 0.2 kg of hydrogen peroxide, and the mixture is mixed with 93 kg of water to obtain the cleaning agent A.
The using method comprises the following steps: adding 93 kg of pure water into a container, heating to 40 ℃, adding sodium metasilicate into the water according to the mass part ratio, uniformly stirring, sequentially adding sodium tripolyphosphate, sodium metasilicate, sodium dodecyl benzene sulfonate, alkylphenol polyoxyethylene OP-10, sodium hypochlorite and hydrogen peroxide, uniformly stirring, adding ethoxylated sodium alkyl sulfate, and rapidly and fully stirring to prevent the occurrence of a gelling phenomenon. Finally, the cleaning agent finished product can be obtained after fully stirring and uniformly preparing.
Dirt is taken from an ammonia cooler tube pass of a low-temperature methanol washing device of a certain company and used for the following experiment, 4 parts of hardened block-shaped dirt samples with basically consistent sizes and each part of hardened block-shaped dirt sample is taken, cleaning liquids are respectively compounded in four beakers according to preset different formulas, the beakers are heated to the initial temperature of about 40 ℃, and are placed in a water bath furnace, and 1 part of dirt sample is respectively added.
The performance test of the cleaning agent adopts a static test method, the test time is 12 hours, and the test temperature is 70 ℃. Four cleaning agents with different component ratios are selected to respectively carry out dirt cleaning agent dissolution tests on each dirt sample according to the same test conditions, and the results after the tests are finished are shown in table 1.
Table 1 detergent dissolution test data for dirt in ammonia coolers of low temperature methanol washing apparatus
And (4) the scale removal rate (scale solubility) is (original weighing mass of the scale sample before the experiment-weighing mass of the scale sample after the experiment is dissolved)/original weighing mass of the scale sample before the experiment is × 100%.
The cleaning agent A has excellent performance in a dirt dissolution experiment, the sample descaling rate can reach more than 95 percent, various use requirements of equipment can be met after one-time degreasing descaling cleaning, and the descaling effect is stable. And the corrosion to equipment is low due to the addition of the preservative. The medicament is alkalescent, and waste liquid is easy to neutralize.
Example 2.
The invention relates to an oil stain cleaning agent for a low-temperature methanol washing device, which specifically comprises the following components: 2.5 kg of sodium tripolyphosphate, 0.5 kg of sodium metasilicate, 0.6 kg of sodium dodecyl benzene sulfonate, 0.3 kg of alkylphenol polyoxyethylene, 2 kg of sodium hypochlorite, 0.4 kg of urotropin, 0.5 kg of ethoxylated sodium alkyl sulfate and 0.2 kg of hydrogen peroxide, and the mixture is mixed with 93 kg of water to obtain the cleaning agent A.
In order to further evaluate the oil and scale removal performance of the low-temperature methanol washing device dirt cleaning agent, 4 dirt sample samples are respectively obtained from 4 independent low-temperature methanol washing devices in China and used for the following experiment, 4 hardened and blocky dirt samples with basically consistent sizes and each 50 g are taken, the cleaning agent A is added into four beakers, and the beakers are placed in a water bath furnace and respectively added with A, B, C, D four dirt samples. The test adopts a static test method, the test time is 12 hours, and the test temperature is 70 ℃. The four scale samples were subjected to a detergent dissolution test under the same experimental conditions, and the experimental results are shown in table 2.
TABLE 2 dissolution test data of fouling in low-temperature methanol ammonia coolers
| The cleaning medium is cleaning agent A | Scale sample A | Scale sample B | Scale sample C | Scale sample D |
| Temperature of experiment | 70℃ | 70℃ | 70℃ | 70℃ |
| Experiment time | 12h | 12h | 12h | 12h |
| Rate of scale removal | 96.9％ | 96.0％ | 97.5％ | 96.8％ |
The main components of the scale sample A, the scale sample B, the scale sample C and the scale sample D are coal tar, iron and sulfur compounds, iron and oxygen compounds, other impurities and the like. The components of the material comprise (mass percent): 6% -8% of coal tar; iron and sulfur compounds 75% -78%; 8% -12% of iron and oxygen compounds; 2 to 11 percent of others (ash, calcium, magnesium, manganese, zinc and the like).
The appearance of the dirt of the low-temperature methanol washing device is flaky or gelatinous blackening matter which is attached to the inner walls of equipment and pipelines, in the general cleaning of the oil dirt, the descaling efficiency of the low-temperature methanol washing device with different categories by using the cleaning agent A can reach more than 95 percent, the once degreasing, descaling and cleaning capability can meet various use requirements, and the descaling effect is stable.
Claims (3)
1. The low-temperature methanol washing device oil dirt cleaning agent is characterized in that: the cleaning agent comprises the following components in parts by weight: comprises 1-4 parts of sodium tripolyphosphate, 0.3-1 part of sodium metasilicate, 0.5-2 parts of sodium dodecyl benzene sulfonate, 0.2-0.5 part of emulsifier, 1-5 parts of sodium hypochlorite, 0.3-0.6 part of urotropine, 0.2-0.8 part of ethoxylated alkyl sodium sulfate, 0.2-0.6 part of hydrogen peroxide and the balance of water.
2. The oil stain cleaning agent for the low-temperature methanol washing device as claimed in claim 1, wherein: the emulsifier is alkylphenol polyoxyethylene OP-10 or nonylphenol polyoxyethylene TX-10 or a mixture of the two.
3. The oil stain cleaning agent for the low-temperature methanol washing device as claimed in claim 1, wherein: the cleaning agent comprises the following components in percentage by mass: 2.5 percent of sodium tripolyphosphate, 0.5 percent of sodium metasilicate, 0.6 percent of sodium dodecyl benzene sulfonate, OP-100.3 percent, 2.0 percent of sodium hypochlorite, 0.4 percent of urotropine, 0.5 percent of ethoxylated alkyl sodium sulfate and 0.2 percent of hydrogen peroxide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595671.1A CN111363633A (en) | 2018-12-25 | 2018-12-25 | Oil dirt cleaning agent for low-temperature methanol washing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811595671.1A CN111363633A (en) | 2018-12-25 | 2018-12-25 | Oil dirt cleaning agent for low-temperature methanol washing device |
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| Publication Number | Publication Date |
|---|---|
| CN111363633A true CN111363633A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811595671.1A Pending CN111363633A (en) | 2018-12-25 | 2018-12-25 | Oil dirt cleaning agent for low-temperature methanol washing device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070512A (en) * | 2006-05-12 | 2007-11-14 | 上海家化联合股份有限公司 | Washine-machine chute detergent |
| CN102102050A (en) * | 2009-12-22 | 2011-06-22 | 江西凤凰富士能光学有限公司 | Optical element cleaning agent and cleaning method thereof |
| CN102534637A (en) * | 2010-12-31 | 2012-07-04 | 宋国新 | Water-based metal cleaning agent |
| CN104818140A (en) * | 2015-04-30 | 2015-08-05 | 威莱(广州)日用品有限公司 | Antibacterial dishwashing detergent |
| CN107881016A (en) * | 2016-09-30 | 2018-04-06 | 天长市地震办公室 | The low bubble kitchen cleaning agent of highly effective and safe |
-
2018
- 2018-12-25 CN CN201811595671.1A patent/CN111363633A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101070512A (en) * | 2006-05-12 | 2007-11-14 | 上海家化联合股份有限公司 | Washine-machine chute detergent |
| CN102102050A (en) * | 2009-12-22 | 2011-06-22 | 江西凤凰富士能光学有限公司 | Optical element cleaning agent and cleaning method thereof |
| CN102534637A (en) * | 2010-12-31 | 2012-07-04 | 宋国新 | Water-based metal cleaning agent |
| CN104818140A (en) * | 2015-04-30 | 2015-08-05 | 威莱(广州)日用品有限公司 | Antibacterial dishwashing detergent |
| CN107881016A (en) * | 2016-09-30 | 2018-04-06 | 天长市地震办公室 | The low bubble kitchen cleaning agent of highly effective and safe |
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Application publication date: 20200703 |