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Degreasing detergent for strip steel by using surfactant of abandoned oil

A surfactant, degreasing and cleaning technology, applied in the direction of non-ionic surface active compounds, organic cleaning compositions, inorganic/element cleaning compositions, etc. problem, to achieve the effect of low foam type, good resistance to hard water, good cleaning and emulsifying properties

Inactive Publication Date: 2014-03-26
TAINJIN BOKNI TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, it must be cleaned before annealing to completely remove the oil on the surface of the strip, otherwise various oils remaining on the surface will form carbonaceous stains during the annealing process, pollute the atmosphere in the furnace, affect the decarburization efficiency, and even cause carburization Phenomenon
In addition, oil stains will also deteriorate the surface quality of the strip and cause nodules on the hearth rolls, resulting in defects such as strip scratches

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Formula: waste oil anionic surfactant fatty acid methyl ester sulfonate sodium salt (30-40% active matter) 25%, waste oil nonionic surfactant cocamide 3%, waste oil nonionic surfactant coconut oil Acid polyethylene glycol 3%, buffer sodium silicate 2%, anti-hard water agent EDTA-2Na 1%, inorganic salt cleaning agent sodium carbonate 3%, purified water 63%.

[0011] Production process: Measure 63 kg of pure water into the reaction kettle, heat up to 60-70°C and stir. Then successively measure 25 kilograms of waste oil anionic surfactant fatty acid methyl ester sulfonate sodium salt (active matter 3040%), 3 kilograms of waste oil nonionic surfactant cocyl alcohol amide, waste oil nonionic surfactant coconut oil acid Add 3 kilograms of polyethylene glycol esters in the reactor. Continue stirring during addition. Then add 2 kg of buffering agent sodium silicate, 1 kg of anti-hard water agent EDTA-2Na, and 3 kg of inorganic salt cleaning agent sodium carbonate into the rea...

Embodiment 2

[0013] Recipe: waste oil anionic surfactant fatty acid methyl ester sulfonate sodium salt (active substance 3040%) 15%, waste oil non-ionic surfactant cocamide 5%, waste oil non-ionic surfactant cocoic acid poly Ethylene glycol ester 5%, buffering agent sodium silicate 3%, anti-hard water agent EDTA-2Na 1%, inorganic salt cleaning agent sodium carbonate 4%, purified water 67%.

[0014] Production process: Measure 67 kg of pure water into the reaction kettle, heat up to 60-70°C and stir. Then successively measure 15 kilograms of waste oil anionic surfactant fatty acid methyl ester sulfonate sodium salt (active matter 3040%), 5 kilograms of waste oil nonionic surfactant cocyl alcohol amide, waste oil nonionic surfactant coconut oil acid Add 5 kilograms of polyethylene glycol esters in the reactor. Continue stirring during addition. Then add 3 kg of buffering agent sodium silicate, 1 kg of anti-hard water agent EDTA-2Na, and 4 kg of inorganic salt cleaning agent sodium carbonat...

Embodiment 3

[0016] Recipe: waste oil anionic surfactant fatty acid methyl ester sulfonate sodium salt (30-40% active matter) 20%, waste oil nonionic surfactant cocamide 4%, waste oil nonionic surfactant coconut oil Acid polyethylene glycol 4%, buffer sodium silicate 3%, anti-hard water agent EDTA-2Na 2%, inorganic salt cleaning agent sodium carbonate 4%, purified water 63%.

[0017] Production process: Measure 63 kg of pure water into the reaction kettle, heat up to 60-70°C and stir. Then measure 20 kilograms of waste oil anionic surfactant fatty acid methyl ester sulfonate sodium salt (active matter 30-40%), 4 kilograms of waste oil nonionic surfactant cocamide, waste oil nonionic surfactant coconut 4 kilograms of polyethylene glycol oleate adds in the reactor. Continue stirring during addition. Then add 3 kg of buffering agent sodium silicate, 2 kg of anti-hard water agent EDTA-2Na, and 4 kg of inorganic salt cleaning agent sodium carbonate into the reaction kettle in turn. The compou...

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PUM

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Abstract

The invention relates to a degreasing detergent for strip steel by using a surfactant of abandoned oil. The detergent is characterized by consisting of an anionic surfactant fatty acid methyl ester sodium sulphonate (active matters account for 30-40%) of abandoned oil, a nonionic surfactant coconut oil alcohol amide of abandoned oil, a nonionic surfactant coconut oil acid polyethylene glycol ester of abandoned oil, EDTA (Ethylene Diamine Tetraacetic Acid)-2Na, sodium carbonate and pure water. The detergent provided by the invention has good cleanness and emulsibility as well as good hard water resistance and low foam. The detergent provided by the invention is a faint yellow liquid in appearance which is stable and is not affected by temperature, oxidization and microorganisms. The detergent is dissoluble in methanol, alcohol and water. The pH value of the original liquid of the detergent is 9-11, and the original liquid is of lower irritation to human skins and is free from corrosion to strip steel plates.

Description

【Technical field】 [0001] The present invention utilizes waste oil surface active agent to manufacture strip steel degreasing cleaning agent, is characterized in that it is made of waste oil anionic surfactant fatty acid methyl ester sulfonate sodium salt (active matter 30-40%), waste oil nonionic surface activity Coc alcohol amide, waste oil non-ionic surfactant polyethylene glycol cocoate, buffer sodium silicate, anti-hard water agent EDTA-2Na, inorganic salt cleaning agent sodium carbonate, purified water. 【Background technique】 [0002] Before the strip is annealed and coated, the surface condition and cleanliness are prerequisites for continuous annealing and coating. During the rolling process of the steel strip, various sundries will inevitably be left on the surface, such as rolling oil and slag in the rolling oil, iron powder produced during cold rolling, accumulated dust, and welding slag produced during head welding Wait. Therefore, it must be cleaned before anne...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C11D1/83C11D3/08C11D3/10C11D3/33
Inventor 唐青姜文海高桂新
Owner TAINJIN BOKNI TECH DEV