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Grease inhibitor

A butter inhibitor and inhibitor technology, applied in hydrocarbons, chemical instruments and methods, organic chemistry, etc., can solve problems such as high cost, cumbersome operation, and poor inhibitor use effect, so as to reduce emissions and reduce environmental pollution. pollution effect

Active Publication Date: 2017-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is that in the existing method for inhibiting the production of butter, the pertinence to the alkali washing tower of the methanol-to-olefins plant is not strong, the inhibitor is not effective and unstable, the operation is cumbersome, and the cost is high.

Method used

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  • Grease inhibitor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Dissolve 40g of isopropylhydroxylamine and 25g of isopropanol in 260g of deionized water, stir evenly, and filter. The filtrate is butter inhibitor, called HYI-1.

[0020] The above-mentioned HYI-1 inhibitor was applied to the simulated alkali scrubber of the methanol-to-olefins plant, and the feed composition of the alkali scrubber was 41.1% ethylene, 40.2% propylene, C 4 11.2%, Acetaldehyde 0.05%, Butanone 0.03%, C 5 + Hydrocarbons 5.58%, CO 2 0.02%, temperature 45°C, sodium hydroxide concentration 10%. Use a piston pump to continuously add the inhibitor into the circulating alkali liquor and then enter the alkali washing tower, the addition amount is 40ppm (relative to the alkali washing tower feed). After 30 days of continuous operation of the device, no tower blockage was found, and the weight of butter in the lye was calculated. And compared with the amount of butter produced when no butter inhibitor was added, the inhibition rate was calculated according to ...

Embodiment 2

[0024] Prepare the butter inhibitor HYI-1 according to the method of Example 1, change the addition amount of the butter inhibitor to 100ppm, and evaluate its inhibitory effect on butter production according to the method of Example 1, see Table 1 for details.

Embodiment 3

[0026] The butter inhibitor HYI-1 was prepared according to the method of Example 1, and the addition amount of the butter inhibitor was changed to 200 ppm, and the inhibitory effect on butter production was also evaluated according to the method of Example 1, see Table 1 for details.

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Abstract

The invention relates to a grease inhibitor. The grease inhibitor mainly solves the technical problem that the conventional grease inhibitor has low specificity in an alkaline washing tower and poor application effects, is unstable, has high operation difficulty and has a high cost. The grease inhibitor comprises, by weight, 0.5 to 10 parts of an amine compound and 0 to 5 parts of an alcohol compound. The grease inhibitor solves the above technical problem and can be used to inhibit production of a large amount of grease in petroleum ethylene, methanol-to-propylene, methanol-to-olefin, vinyl acetate, ethylene dichloride and epoxypropane industrial alkaline washing towers thereby preventing tower blocking.

Description

technical field [0001] The invention relates to a butter inhibitor. Background technique [0002] Among low-carbon olefins, ethylene and propylene are important organic chemical raw materials, and their demand is increasing year by year. The traditional route to obtain ethylene and propylene is naphtha cracking, which relies on oil, which has problems such as rising prices and unstable supply in the short term, and limited resource storage in the long term. Therefore, in recent years, as the most promising alternative to naphtha route to olefins, coal or natural gas via methanol to ethylene, propylene and other low-carbon olefins technology (methanol to olefins, MTO or MTP) has received great attention. Whether it is in the traditional naphtha cracking route or in the emerging methanol-to-olefins technology, in order to obtain the target product that meets the purity requirements or to recycle some unreacted materials, the materials flowing out from the reactor need to go t...

Claims

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Application Information

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IPC IPC(8): C07C7/20
Inventor 姜丽燕田文卿李继文王川
Owner CHINA PETROLEUM & CHEM CORP
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