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A kind of method of alkylation reaction

An alkylation reaction and substrate technology, applied in the field of isobutane/butene alkylation reaction, can solve problems such as unavoidable shortcomings, unsatisfaction, singleness, etc., and achieve the effect of improving selectivity and catalyst life

Active Publication Date: 2015-10-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] The above modification methods are single organometallic modification or rare earth modification, so the disadvantages brought about by alkali metal modification and rare earth modification cannot be avoided
Cannot meet the catalyst requirements for alkylation reactions to achieve the best selectivity, conversion and lifetime

Method used

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  • A kind of method of alkylation reaction
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Examples

Experimental program
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Effect test

Embodiment 1

[0035] This example illustrates the modification step of β molecular sieve in the method provided by the present invention.

[0036] 10g β molecular sieve (provided by Zhoucun Catalyst Factory, SiO 2 / Al 2 o 3 =25,Na 2 O%<0.1%, roasting at 550°C for 2h) Add 10g of diethylamine and 50g of ethanol, add them to the pressure melting bomb, and heat at 120°C for 24h. Suction filter, wash, and dry the obtained sample at 110°C, then add 5 g of the above-mentioned organic base modified sample to 300 g of water, add 40 g of lanthanum nitrate hexahydrate, exchange at 50°C for 5 hours, wash and suction filter, and dry at 110°C, the obtained The sample is counted as A, and the results of XRD and BET characterization are listed in Table 1.

Embodiment 2

[0041] This example illustrates the modification steps of the Y-type molecular sieve in the method provided by the present invention.

[0042] 10g Y molecular sieve (provided by Changling Catalyst Factory, SiO 2 / Al 2 o 3 =5,Na 2 O%<0.1%, roasting at 550°C for 2h) Add 10g of triethylamine and 50g of methanol, add them to the pressure melting bomb, and heat at 120°C for 144h. Suction filter, wash, and dry the obtained sample at 110°C, then add 5 g of the above-mentioned organic base modified sample to 200 g of water, add 30 g of cerium nitrate hexahydrate, exchange at 60°C for 4 hours, wash and suction filter, and dry at 110°C, the obtained The sample is counted as B, and the results of XRD and BET characterization are listed in Table 1.

Embodiment 3

[0044] This example illustrates the modification step of mordenite in the method provided by the present invention.

[0045] 10g mordenite molecular sieve (provided by Zhoucun Catalyst Factory, SiO 2 / Al 2 o 3 =10, Na 2 O%<0.1%, roasting at 550°C for 2h) Add 10g of ethylenediamine and 50g of water, add them to the pressure melting bomb, and heat at 150°C for 1h. Suction filter, wash, and dry the obtained sample at 110°C, then add 200 g of water to the above-mentioned organic base modified sample, add 30 g of lanthanum nitrate hexahydrate, exchange at 70°C for 3 hours, wash and suction filter, and dry at 110°C, the obtained sample It is counted as C, and the results of XRD and BET characterization are listed in Table 1.

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Abstract

The present invention provides an alkylation reaction method, which is characterized in that an alkylation reaction of isobutane and butene is performed in the presence of a catalyst under alkylation reaction conditions, wherein the catalyst is prepared through a molecular sieve modification step and a matrix introduction step, and the molecular sieve modification step comprises: uniformly mixing a molecular sieve, one or a plurality of substances selected from water, an alcohol and an ester, and an organic alkali, treating at a temperature of 100-250 DEG C under autogenous pressure in a sealed reaction kettle, recovering the product obtained from the treating, and carrying out rare earth ion salt exchange.

Description

technical field [0001] The present invention relates to a kind of alkylation reaction method, more specifically relates to the method of isobutane / butene alkylation reaction. Background technique [0002] The alkylation reaction of isobutane and butene is an important process for the production of high-octane gasoline components. At present, the alkylation production processes used in industry include sulfuric acid method and hydrofluoric acid method. Among the alkylation production capacity of nearly 90 million t / a in the world, the two methods each account for about half. From the perspective of the proportion of alkylate in the total gasoline composition, the United States accounts for about 12.5%, Europe accounts for about 4%, and China only accounts for about 0.4%. [0003] Due to the corrosiveness and toxicity of sulfuric acid and hydrofluoric acid and the harm to the environment caused by the discharge of waste acid in the process, alkylate oil production enterprises...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C9/16C07C2/58C10G50/00
Inventor 付强李永祥胡合新慕旭宏张久顺舒兴田
Owner CHINA PETROLEUM & CHEM CORP