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Butter inhibitor and preparation method and application thereof

A butter inhibitor and diluent technology, applied in chemical instruments and methods, extraction purification/separation, organic chemistry, etc., can solve problems such as poor inhibition effect

Active Publication Date: 2022-07-29
CESTOIL IND SERVICES SHENZHEN CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it is difficult for traditional butter inhibitors to form a uniform and stable system while simultaneously inhibiting the condensation of aldehydes and ketones in the water phase and oil phase, and the inhibitory effect is poor

Method used

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  • Butter inhibitor and preparation method and application thereof
  • Butter inhibitor and preparation method and application thereof
  • Butter inhibitor and preparation method and application thereof

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preparation example Construction

[0046] The preparation method of the butter inhibitor of one embodiment is one of the preparation methods of the above butter inhibitor, and the preparation method of the butter inhibitor comprises the steps:

[0047] Step S100: In terms of parts by mass, combine 20 to 35 parts of acetoacetate, 15 to 25 parts of nitroxide radicals, 1 to 10 parts of polycarboxylate, and 5 to 15 parts of polycarboxylate. The oxyethylene ether compound and 15 to 40 parts of the diluent are mixed to obtain a butter inhibitor.

[0048] Wherein, step S100 is specifically as follows: adding 1 part to 10 parts of polycarboxylate and 15 parts to 40 parts of diluent into the container, and under the condition of 50 ° C to 60 ° C, at 200 r / min to 600 r / min Stir at rotating speed until completely dissolved, then add 20-35 parts of acetoacetate, 15-25 parts of nitroxide radical and 5-15 parts of polyoxyethylene ether compound, stir for 0.5h-3h, cool down , filtered to get butter inhibitor.

[0049] Furth...

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Abstract

The present invention relates to a butter inhibitor and its preparation method and application. A butter inhibitor, in parts by mass, comprising 20 to 35 parts of acetoacetate, 15 to 25 parts of nitroxide radicals, 1 to 10 parts of polycarboxylate, 5 to 15 parts of parts of polyoxyethylene ether compounds and 15 to 40 parts of diluents, wherein the general structural formula of acetoacetate is CH 3 COCH 2 COOC n H m , where n is any integer from 1 to 10, m is any integer from 3 to 21; the nitroxide radical is a piperidine nitroxide radical. The above-mentioned butter inhibitor has the advantages of uniformity and stability, and good inhibitory effect on butter in the water phase and the oil phase.

Description

technical field [0001] The invention relates to the field of ethylene preparation, in particular to a butter inhibitor and a preparation method and application thereof. 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 If the acidic substances produced are not removed, it will corrode equipment, cause blockage of subsequent cryogenic separation and rectification devices, cause catalyst poisoning during ethylene polymerization and contaminate ethylene. Therefore, ethylene production units are generally equipped with amine washing and alkaline washing systems to remove acidic substances. However, in a strong alkaline environment, the aldehydes, ketones and other substances in the cracked gas will undergo Aldol condensation reaction to form polymers. In addition, the active olefins in the cracked gas will also undergo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C7/20C07C7/10C07C11/04
Inventor 严斌胡涛英余道轲熊靓
Owner CESTOIL IND SERVICES SHENZHEN CO LTD