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A modification method of cation exchange resin and method for preparing methyl tert-amyl ether

An ion exchange resin and cation exchange technology, applied in the field of modification of cation exchange resin, can solve the problems of increased oligomerization side reactions, increased by-products, corroded equipment, etc., to improve stability, increase specific surface area, and reduce loss rate Effect

Active Publication Date: 2020-03-17
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages are mainly reflected in: ①The stability of the resin catalyst is poor. When the temperature rises (greater than 373.15K), the sulfonic acid group is easy to fall off, causing the catalyst to be deactivated, corroding the equipment and polluting the product; ②As the temperature rises High, the selectivity of the resin catalyst becomes poor, the side reactions of oligomerization increase, and the by-products increase; ③ In order to improve the conversion rate of olefins and suppress side reactions in industry, a higher alcohol-ene ratio is often used, resulting in the need for higher energy consumption. Realize the recycling of alcohol

Method used

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  • A modification method of cation exchange resin and method for preparing methyl tert-amyl ether
  • A modification method of cation exchange resin and method for preparing methyl tert-amyl ether
  • A modification method of cation exchange resin and method for preparing methyl tert-amyl ether

Examples

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Effect test

Embodiment 1

[0049] Soak the commercially available DNW-type sulfonic acid-based cation exchange resin produced by Dandong Mingzhu Special Resin Co., Ltd. in toluene at 40°C for 28 hours, and then soak it in methyl isobutyl ketone at 50°C for 40 hours after filtering. After washing and drying, the volume ratio of toluene or methyl isobutyl ketone to sulfonic acid cation exchange resin is 10:1. Take 500ml of the above catalyst, put it in 3mg / L deoxygenated water, 3 Inject nitrogen at a flow rate, soak for 16 hours at a pressure of 0.6MPa and a temperature of 65°C; then adjust the nitrogen flow rate to 15m 3 / h, increase the pressure to 1.0MPa, soak at 90°C for 18h; then adjust the nitrogen flow rate to 5m 3 / h, the pressure was raised to 1.5MPa, the temperature was raised to 140°C and soaked for 24 hours, and after the treatment, the modified sulfonic acid-based cation exchange resin GL1 was obtained by washing and drying.

Embodiment 2

[0051] Other conditions are the same as in Example 1, except that the DNW-type sulfonic acid-based cation-exchange resin is changed into DZH-type sulfonic-acid-based cation-exchange resin GL2.

Embodiment 3

[0053] Other conditions are the same as in Example 1, except that the DNW type sulfonic acid cation exchange resin is changed to D005-II type sulfonic acid cation exchange resin GL3.

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Abstract

The invention discloses a cation exchange resin modification method and a methyl tert-amyl ether preparation method. According to the present invention, a sulfonic cation exchange resin is soaked sequentially with toluene and methyl isobutyl ketone, and soaking in stages is performed with distilled water, such that the specific surface and the pore size structure of the resin can be improved, andthe stability and the selectivity of the sulfonic cation exchange resin catalyst can be improved; and with the application of the modified resin as the catalyst in the preparation of methyl tert-amylether at a temperature of 75-250 DEG C under a pressure of 0.5-3.0 MPa by using C5 olefin and methanol as raw materials, the continuous production can be achieved, the advantages of high conversion rate, good stability and the like can be provided, and the method is the new environmentally friendly process.

Description

technical field [0001] The invention relates to a modification method of a cation exchange resin and a method for preparing methyl tert-amyl ether by using the modified cation exchange resin as a catalyst. Background technique [0002] With the development of human society, countries around the world have paid more and more attention to environmental protection. In order to reduce the pollution of automobile exhaust, the demand for unleaded, oxygen-containing, and high-octane gasoline has soared. Especially in 1990, the United States promulgated the Clean Air Law Amendment Since CAA, in order to meet the requirements of environmental protection, refineries in various countries have vigorously developed reformulated gasoline. [0003] Methyl tert-amyl ether (TAME) (oxidative octane number RON is 105, engine octane number MON is 100) is another after methyl tert-butyl ether (MTBE) (RON is 117, MON is 102) Ideal oxygenate for the production of unleaded, oxygenated and high-oct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/10C07C41/06C07C43/04
Inventor 霍稳周邓玉媛刘野李花伊张宝国
Owner CHINA PETROLEUM & CHEM CORP
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