Methanol extraction water deacidification agent prepared by etherification preparation process and preparation method of methanol extraction water deacidification agent

A preparation process and deacidification agent technology, applied in chemical instruments and methods, chemical industry, sustainable manufacturing/processing, etc., can solve problems such as poor stability of amine groups, damage to catalytic performance, damage to centrifugal pumps, etc., and achieve amine group stability , not easy to fall off, avoid side effects

Pending Publication Date: 2022-06-07
丹东明珠特种树脂有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This deacidification agent has poor stability of the amine group, which is detached from the resin ball. Although it is accompanied by a weak acid group, the pH value of the deacidification solution is still high and fluctuating, and it can react with iron ions in the solution to form precipitates, and blockage of the catalyst resin occurs during the recovery cycle. pores, damage its catalytic performance, and the side reaction products can even be separated from the extraction water, resulting in damage to the centrifugal pump

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Deacidifier C-1

[0025] 1). Polymerization and purification

[0026] 30 parts by weight of styrene, 10 parts by weight of trifluoroethyl methacrylate, 20 parts by weight of p-divinylbenzene, 30 parts by weight of porogen, and 0.6 parts by weight of initiator, put them into a mixing tank, and stir for 0.5 h until the mixture is uniform , is the oil phase; the porogen can be selected from heptane; the dispersant can be selected from alum, and the following examples are the same;

[0027] In the polymerization kettle, add 300 parts by weight of water and 1.0 parts by weight of dispersant, stir and heat up to 40 ° C, make it completely dissolved, then add the above-mentioned oil phase, adjust the stirring speed to be 90 rev / min, slowly heat up to 80 ° C, polymerization reaction 8 After 1 hour, the material is cooled and discharged, washed three times alternately with hot water and cold water, and the resin balls are separated;

[0028] Extraction: Add resin balls to the ...

Embodiment 2

[0035] Deacidifier C-2

[0036] 1). Polymerization and purification

[0037] 40 parts by weight of styrene, 15 parts by weight of trifluoroethyl methacrylate, 30 parts by weight of p-divinylbenzene, 40 parts by weight of porogen, and 1.0 part by weight of initiator are put into a mixing tank and stirred for 0.5h until the mixture is uniform , is the oil phase;

[0038] In the polymerization kettle, add 350 parts by weight of water and 1.5 parts by weight of dispersing agent, stir and heat up to 50 ℃, make it dissolve completely, add the above-mentioned oil phase again, adjust the stirring speed to be 120 rev / min, slowly heat up to 80 ℃, polymerization reaction 16 After 1 hour, the material is cooled and discharged, washed three times alternately with hot water and cold water, and the resin balls are separated;

[0039] Extraction: Add resin balls to the extraction kettle, add excess solvent acetone to the distillation kettle, heat to evaporate the solvent in the kettle, and ...

Embodiment 3

[0046] Deacidifier C-3

[0047] 1). Polymerization and purification

[0048] 60 parts by weight of styrene, 20 parts by weight of trifluoroethyl methacrylate, 40 parts by weight of p-divinylbenzene, 50 parts by weight of porogen, and 1.2 parts by weight of initiator are put into a mixing tank, and stirred for 0.8 h until the mixture is uniform , is the oil phase;

[0049] In the polymerization kettle, add 400 parts by weight of water and 2.0 parts by weight of dispersant, stir and heat up to 45 ° C, make it completely dissolved, then add the above-mentioned oil phase, adjust the stirring speed to be 100 rev / min, slowly heat up to 80 ° C, polymerization reaction 12 After 1 hour, the material is cooled and discharged, washed three times alternately with hot water and cold water, and the resin balls are separated;

[0050] Extraction: Add resin balls to the extraction kettle, add excess solvent acetone to the distillation kettle, heat to evaporate the solvent in the kettle, and...

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PUM

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Abstract

The invention provides a high-quality methanol extraction water deacidification agent prepared by an etherification preparation process and a preparation method of the methanol extraction water deacidification agent. The deacidification agent is prepared by carrying out chlorination reaction and amination reaction on a polymer ball matrix prepared by copolymerizing styrene, trifluoroethyl methacrylate and a divinyl benzene monomer. The etherification reaction methanol extraction water deacidification agent has excellent deacidification application performance, can prevent the pH value of the deacidification liquid from fluctuating and floating, overcomes the damage to the performance and the service cycle of the catalyst in the recovery cycle, and eliminates the potential safety hazard of equipment operation.

Description

technical field [0001] The invention relates to a methanol extraction water deacidification agent and a preparation method of the deacidification agent used in the etherification preparation process of methyl tertiary butyl ether, methyl tertiary amyl ether and light gasoline etherification in the technical field of petrochemical industry. Background technique [0002] Methyl tertiary butyl ether MTBE, methyl tertiary amyl ether TAME and light gasoline etherification products are all environmentally friendly gasoline additives. The etherification process is that isobutylene, isopentene and methanol react under the action of a catalyst to generate methyl tertiary butyl ether MTBE and methyl tertiary amyl ether TAME. The process flow mainly includes pre-reaction, catalytic distillation, water washing and methanol recovery. . Among them, the cation-exchange resin catalyst used in the pre-reactor and the catalytic distillation column, its sulfonate group will continuously fall ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J41/13C08F8/32C08F8/20C08F212/08C08F212/36C08F220/24
CPCB01J41/13C08F8/32C08F8/20C08F212/08C08F212/36C08F220/24Y02P20/10
Inventor 王义成孟繁生张伟冷东斌吕晓东彭慧敏
Owner 丹东明珠特种树脂有限公司
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