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Cleaning agent for strong adhesion stain and its application

An adhesion and cleaning agent technology, applied in the field of cleaning agents, can solve the problems of corroding skin, wasting energy, polluting the environment, etc., and achieving the effects of reducing oil pressure, reducing scaling speed, and simple production process

Inactive Publication Date: 2005-03-23
山东恒冠化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In terms of descaling technology for crude oil pipeline oil scale, most of them at home and abroad currently use solvent degreasing and carbon tetrachloride (CTC) and 1,1,1-trichloroethane (TCA) cleaning. The former wastes energy and is flammable. Explosive, unsafe to use
The latter has high cleaning costs, is uneconomical, and will damage the ozone layer, and has been gradually eliminated.
Many water-based cleaning agents commonly used today use a mixture of strong alkali and phosphorus-containing compounds. This type of cleaning agent corrodes the skin, damages clothing, and emits an unbearable, strong irritating smell, which is harmful to human health. It is very unsuitable to use. It is safe, brings great inconvenience to operators, seriously pollutes the environment, and seriously corrodes the pipeline, resulting in extremely low reuse rate of pipelines, which is far less costly than the use of new pipelines

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Put 40 kilograms of sodium metasilicate pentahydrate into the mixer, 30 kilograms of sodium silicate, 10 kilograms of sodium dodecylbenzenesulfonate, 3 kilograms of sodium methylene dinaphthalene sulfonate, and 3 kilograms of carboxymethyl cellulose 2 kg, packed evenly after mechanical mixing, 5 kg of high-carbon fatty alcohol polyoxyethylene ether, 5 kg of secondary octanol polyoxyethylene ether, mixed evenly by manual mixing, and packed in two groups when used Pour them into water together to prepare a solution with a concentration of 2% to 8%. Cleans oil stains on pipes and metal equipment with good effect. The corrosion rate of cleaning agent to steel is less than 0.5g / (m2) measured by weight loss coupon method 2 .h). The descaling rate is above 96%.

Embodiment 2

[0051] Put 20 kilograms of sodium silicate in the mixer, 35 kilograms of sodium metasilicate pentahydrate, 15 kilograms of sodium carbonate, 14 kilograms of sodium dodecylbenzenesulfonate, and 5 kilograms of sodium methylene dinaphthalenesulfonate. Packed after mechanical mixing, 5 kg of lauroyl diethanolamine, 6 kg of 2-octyl alcohol polyoxyethylene ether, after manual stirring and mixing, the two components of the large and small packages are poured into water together to prepare 2% to 8% concentration solution. The effect of cleaning the deposited oil on the surface of carbon steel and iron alloy is obvious, and the descaling rate is above 97%. The corrosion rate of cleaning agent to steel is less than 0.5g / (m2) measured by weight loss coupon method 2 .h). A passivation film can also be formed on the metal surface by cleaning. The passivation effect is measured by the copper sulfate method, and the time for copper plating to appear is greater than 30s. 0.5 times longer ...

Embodiment 3

[0053] Put 20 kilograms of sodium silicate in the mixer, 50 kilograms of sodium metasilicate pentahydrate, 12 kilograms of sodium dodecylbenzenesulfonate, 3 kilograms of sodium methylene dinaphthalene sulfonate, and 3 kilograms of methyl cellulose. 2 kg, packed evenly after mechanical mixing, 3 kg of high-carbon fatty alcohol polyoxyethylene ether, 7 kg of lauroyl diethanolamine, 6 kg of secondary octanol polyoxyethylene ether, mixed evenly by manual mixing and packed When used, the two components of the large and small packages are poured into water together to prepare a solution with a concentration of 2% to 5%. It has a good effect on cleaning crude oil pipelines and steel surface oil stains, and the descaling rate is above 98%. The corrosion rate of cleaning agent to steel is less than 0.5g / (m2) measured by weight loss coupon method 2 .h).

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PUM

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Abstract

The invention is a strongly adhesive fouling detergent and its application, composed of inorganic salt, anionicsurfactant, nonionic surfactant, dispersant, penetrating agent, and anti-sedimentation agent, and as used, it is only necessary to mix with water in a certain proportion. It can effectively eliminate fouling on the pipeline wall to make the pipeline smooth, reducing oil transporting pressure and increasing oil output, the corrosivity is extremely low, and it forms passive film on the pipeline wall to reduce fouling speed, having no pollution to the environment. It can be used to wash other metal surfaces, fuel oil devices.

Description

Technical field: [0001] The invention relates to a cleaning agent, in particular to a cleaning agent for strongly adherent fouling. Background technique: [0002] In terms of descaling technology for crude oil pipeline oil scale, most of them at home and abroad currently use solvent degreasing and carbon tetrachloride (CTC) and 1,1,1-trichloroethane (TCA) cleaning. The former wastes energy and is flammable. Explosive and unsafe to use. The latter has high cleaning cost, is uneconomical, and will damage the ozone layer, so it has been gradually eliminated. Many water-based cleaning agents commonly used today use a mixture of strong alkali and phosphorus-containing compounds. This type of cleaning agent corrodes the skin, damages clothing, and emits an unbearable, strong irritating smell, which is harmful to human health. It is very unsuitable to use. It is safe, brings great inconvenience to operators, seriously pollutes the environment, and seriously corrodes the pipeline,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/83C11D3/37
Inventor 李晓俊刘丰孙长高李静
Owner 山东恒冠化工科技有限公司
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