Butter inhibitor for ethylene unit alkaline tower and preparation method of butter inhibitor

A butter inhibitor and ethylene device technology, applied in chemical instruments and methods, hydrocarbons, organic chemistry, etc., can solve problems such as the limitation of the inhibitory effect, and achieve the inhibition of butter formation, inhibition of free radical polymerization, and efficient condensation reaction Effect

Inactive Publication Date: 2016-08-17
深圳凯奇化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of amino acid components in the above patents has not been strictly evaluated, and the inhibitory effect of actual use has limitations

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] Under normal temperature, normal pressure and continuous stirring, 10g arginine, 10g N, N-diethylhydroxylamine, 5g sodium thiosulfate are added to 75g deionized water until each component is completely dissolved, and the present invention is obtained. The high-efficiency ethylene plant alkali washing tower uses butter inhibitor.

Embodiment 2

[0038] Under normal temperature, normal pressure and continuous stirring, 10g of lysine, 10g of N,N-diethylhydroxylamine, 5g of sodium thiosulfate were added to 75g of deionized water, and the others were the same as in Example 1.

Embodiment 3

[0040] Under normal temperature, normal pressure and continuous stirring, 10 g of proline, 10 g of N, N-diethylhydroxylamine, and 5 g of sodium thiosulfate were added to 75 g of deionized water, and the others were the same as in Example 1.

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PUM

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Abstract

A butter inhibitor for alkali washing tower of an ethylene plant, characterized in that its components include: 10-30% α-amino acid; 10-30% hydroxylamine; 2-10% sulfate antioxidant Solubilizer; 30-78% deionized water. The butter inhibitor can be obtained by fully mixing and completely dissolving components 1, 2, 3, and adding components. The butter inhibitor provided by the invention is uniform and stable, and can efficiently inhibit the condensation reaction of oxygen-containing compounds and inhibit the unsaturated The free radical polymerization of olefins reduces the small amount of oxygen dissolved in the lye, and at the same time dissolves and disperses the generated small amount of polymer, thereby effectively inhibiting the formation of butter during the alkaline washing process of ethylene production. The raw materials used are natural amino acids and cheap chemical raw materials, and the production is simple and the operation is simple and convenient.

Description

【Technical field】 [0001] The invention relates to the problem that butter is easily produced during the alkali cleaning process of an ethylene unit, and in particular relates to an inhibitor for inhibiting butter. 【Background technique】 [0002] In the industrial process of hydrocarbon cracking to ethylene, a large amount of gas that is easily converted into acidic substances will inevitably be produced, mainly H 2 S, CO 2 etc., the acidic substances produced will cause blockage and corrosion of subsequent cryogenic separation and rectification devices and pollution of downstream products, so it is necessary to carry out an alkali washing step in the refining process, that is, absorb and desorb through the alkali washing tower In addition to acidic substances. The alkaline cleaning process includes amine cleaning and alkaline cleaning system. Under this condition, the oxygen-containing compounds and partially unsaturated olefins brought in by the cracking raw materials wil...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C11/04C07C7/20
CPCC07C7/20
Inventor 徐建成
Owner 深圳凯奇化工有限公司
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