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Degreasing agent for stainless steel, carbon steel and petrochemical pipelines

A petrochemical and degreasing agent technology, applied in the field of chemical product preparation, can solve the problems of poor degreasing performance, physical harm to operators, poor high temperature performance, etc., and achieves green and environmentally friendly raw material sources, reduces physical harm, and has high degreasing efficiency. Effect

Inactive Publication Date: 2015-04-22
陕西凯利环境工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Most of the known degreasing agent products in the art have too high alkali content, some products have substandard active substance content, poor degreasing performance, some products have poor high-temperature performance, and some products contain halogens, which cause crystals of stainless steel and carbon steel. Inter-corrosion, pollution to the environment, and great harm to the operator's body

Method used

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  • Degreasing agent for stainless steel, carbon steel and petrochemical pipelines
  • Degreasing agent for stainless steel, carbon steel and petrochemical pipelines
  • Degreasing agent for stainless steel, carbon steel and petrochemical pipelines

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Weigh 100g of sodium hydroxide, 40g of sodium gluconate, 20g of pull-off powder, 30g of p-phenylmethanesulfonic acid, and 50g of alkyl glycoside APG-081050g. The p-phenylmethanesulfonic acid is dissolved in sodium hydroxide solution, cooled to room temperature and packaged, then the product is ready. Take the degreasing agent product in Example 1 and dilute it into 1000mL of 10% aqueous solution, soak the carbon steel or stainless steel elbow of DN30 pickled by hydrochloric acid at room temperature for 30min, take out the elbow, rinse it with pure water, and then dry it with oil-free air Blow dry, soak the dry elbow 10min with 1000mL carbon tetrachloride, then measure the oil content in the carbon tetrachloride to be 10mg / L, which is far better than the degreasing agent currently used (sodium hydroxide 60g, sodium carbonate 40g, nonyl phenol polyoxyethylene ether OP-1020g, 880mL water compounded, the same below) the oil content (245mg / L, the same below) determined by th...

Embodiment 2

[0016] Weigh 150g of sodium hydroxide, 30g of pull-off powder, 80g of alkyl glycoside APG-081080g, 70g of p-phenylmethanesulfonic acid, and 80g of sodium gluconate. Sulfonic acid, APG-0810 and sodium gluconate are dissolved in sodium hydroxide solution, cooled to room temperature and packaged, then the product is ready. Take the degreasing agent product in Example 2 and dilute it into 1000mL of 10% aqueous solution, soak the carbon steel or stainless steel elbow of DN30 pickled by hydrochloric acid at room temperature for 30min, take out the elbow, rinse it with pure water, and then dry it with oil-free air Blow dry, soak the dry elbow with 1000mL carbon tetrachloride for 10min, and then measure the oil content in carbon tetrachloride to be 8mg / L, which is far superior to the oil content measured by the same method for the degreasing agent currently used.

Embodiment 3

[0018] Weigh 100g of sodium hydroxide, 50g of alkyl glycoside APG-0810, 30g of pull-off powder, 65g of p-phenylmethanesulfonic acid, 70g of sodium gluconate, first dissolve sodium hydroxide in 685mL of water, and then dissolve Dissolve powder, p-benzenemethanesulfonic acid and sodium gluconate in sodium hydroxide solution, cool to room temperature and package, then the product is ready. Take the degreasing agent product in Example 3 and dilute it into 1000mL of 10% aqueous solution, soak the carbon steel or stainless steel elbow of DN30 pickled by hydrochloric acid at room temperature for 30min, take out the elbow, rinse it with pure water, and then dry it with oil-free air Blow dry, soak the dry elbow with 1000mL carbon tetrachloride for 10min, and then measure the oil content in carbon tetrachloride to be 15mg / L, which is far superior to the oil content measured by the same method for the degreasing agent currently used.

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Abstract

The invention discloses a degreasing agent for stainless steel, carbon steel and petrochemical pipelines. The degreasing agent is prepared by mixing and dissolving p-benzene methane sulfonic acid, sodium gluconate, alkyl polyglycoside APG, sodium hydroxide, nekal and water. The degreasing agent is directly sprayed to the surface of the stainless steel or carbon steel, or is used for soaking the petrochemical pipelines and chemical plant oxygen (or nitrogen) pipelines after being diluted in use to ensure that the grease on the surfaces of the stainless steel, carbon steel and petrochemical pipelines and the chemical plant oxygen (or nitrogen) pipelines can be completely removed. Compared with the prior art, the degreasing agent disclosed by the invention has the advantages of high degreasing efficiency, green and environment-friendly raw material source, low alkalinity, high-temperature resistance and hard water resistance, cannot cause inter-crystalline corrosion to the stainless steel and the carbon steel, and cannot cause environmental pollution.

Description

technical field [0001] The invention belongs to the technical field of preparation of chemical products and relates to a degreasing agent for stainless steel, carbon steel and petrochemical pipelines. Background technique [0002] Degreasing agent is a chemical preparation used to remove oil stains (rust oil, butter, emulsified oil, machining oil) on the surface of metal workpieces. The product is widely used in stainless steel, carbon steel, petroleum pipelines and oxygen (or nitrogen) pipelines in chemical plants, etc. aspect. Most of the known degreasing agent products in the art have too high alkali content, some products have substandard active substance content, poor degreasing performance, some products have poor high-temperature performance, and some products contain halogens, which cause crystals of stainless steel and carbon steel. Inter-corrosion, pollution to the environment, but also a greater harm to the operator's body. Contents of the invention [0003] T...

Claims

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Application Information

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IPC IPC(8): C23G1/14C23G1/19
Inventor 黄述洲康东平张文东
Owner 陕西凯利环境工程有限公司
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