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Regeneration method for composite material containing beta molecular sieve in alkylation reaction

A technology of alkylation reaction and β molecular sieve, which is applied in molecular sieve catalysts, chemical instruments and methods, chemical/physical processes, etc., can solve the problems of complex regeneration process and high energy consumption, and achieve effective regeneration effect

Inactive Publication Date: 2006-06-28
CHINA PETROLEUM & CHEM CORP +1
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to provide a simple and effective regeneration method for composite materials containing β molecular sieve in the alkylation reaction in view of the shortcomings of complex regeneration process and high energy consumption in the prior art

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] Put 5.0 grams of the raw agent B1', 5.0 g of tetrahydrofuran and 5.0 g of ethanol into the tank reactor together. After the temperature is stabilized at 40 ° C and the pressure reaches 1 Mpa, start stirring, and take out the catalyst after cooling down for 1 hour. , filtered, and dried to obtain a regenerant, which is denoted as B1'-1, wherein the particle size of the nano-β molecular sieve remains unchanged.

[0036] The acid strength analysis results of B1′-1 are shown in Table 1.

[0037] Add B1'-12.0 grams in the fixed-bed reactor, when the reactor was heated up to 80°C and the pressure reached 2MPa, the raw material of 100g isobutane and 1-butene was added at a space velocity of 2.0g / g.h (isobutane: 1-butene=10:1) was reacted, and after 100 minutes, the product was collected and detected. The reaction results are shown in Table 1.

Embodiment 2

[0039] Same as Example 1, except that the eluent is 10.0 g tetrahydrofuran, and the temperature is stabilized at 70° C. to obtain a regenerant, which is denoted as B1′-2, wherein the particle size of the nano-β molecular sieve remains unchanged.

[0040] The acid strength analysis results of B1'-2 and the reaction results of the regenerant in the fixed-bed reactor (reaction conditions and catalyst consumption are the same as in Example 1) are shown in Table 1.

Embodiment 3

[0042] The same as Example 1, the difference is that the eluent is 5.0g tetrahydrofuran and 10.0g dichloroethane to obtain a regenerant, which is denoted as B1'-3, wherein the particle size of the nano-beta molecular sieve remains unchanged.

[0043] The acid strength analysis results of B1'-3 and the reaction results of the regenerant in the fixed-bed reactor (reaction conditions and catalyst consumption are the same as in Example 1) are shown in Table 1.

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PUM

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Abstract

The invention is a regeneration method for compound material containing beta molecular sieve in alkylation reaction. Its feature is: all or part of inactive compound material made up of SiO2 and / or Al2O3 and nanometer beta molecular sieve is processed under pressure of 0.1-10MPa and temperature of 10-200deg.C with tetrahydrofuran.

Description

technical field [0001] The present invention relates to the catalyst regeneration method, more specifically to the regeneration method of the composite material containing β molecular sieve in the alkylation reaction. Background technique [0002] At present, the traditional liquid acid alkylation process, namely sulfuric acid method and hydrofluoric acid method, is still used in the petrochemical industry, and it is spread all over the world, especially in North America. Alkylated gasoline has the characteristics of high octane number (RON94~96, MON92~94), low sensitivity, no olefins and aromatics, extremely low sulfur content, low Reid vapor pressure, and clean combustion, so it has become a reformulated gasoline (Reformulated gasoline). Gasoline) is an environmentally friendly petrochemical product, and the alkylation process has long been recognized as one of the best solutions for refining olefins into valuable, clean gasoline blending components . Today's widespread ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/90
Inventor 付强谢文华王永睿慕旭宏宗保宁闵恩泽
Owner CHINA PETROLEUM & CHEM CORP
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