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C4 catalytic conversion method

A C4 catalysis and catalyst technology, which is applied in chemical instruments and methods, hydrocarbons, hydrocarbons, etc., can solve the problems that the output of propylene cannot meet the requirements, etc.

Active Publication Date: 2014-03-12
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The present invention proposes a carbon four catalytic conversion method, a method for producing propane and aromatics from carbon four butane raw materials, so as to solve the problem that the output of propylene cannot meet the requirements

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Embodiment 1 catalyst preparation

[0024] Make a solution of ammonium phosphate, then impregnate ZSM-5 molecular sieve with a silicon-aluminum ratio of 60 in the solution for 2.0 hours, then dry it at 100°C, and then roast it at 550°C to obtain Modified ZSM-5 molecular sieve. Then homogenize 70% phosphorus-containing ZSM-5 molecular sieve and 30% pseudo-boehmite plus alkene nitric acid aqueous solution, and then extrude the strip catalyst in an oven at about 110°C for 4 hours Dry it, and then bake it at 550° C. for 4 hours to obtain Catalyst A.

Embodiment 2

[0025] Embodiment 2 catalyst preparation

[0026] Make a solution of ammonium phosphate, then impregnate ZSM-5 molecular sieve with a silicon-aluminum ratio of 30 in the solution for 2.0 hours, then dry it at 100°C, and then roast it at 550°C to obtain Modified ZSM-5 molecular sieve. Then 80% phosphorus-containing ZSM-5 molecular sieve, 20% pseudo-boehmite plus alkene nitric acid aqueous solution are homogenized, and then extruded in the extruder, and the strip-shaped catalyst is placed in an oven at about 110°C for 4 hours Drying, and then roasting at a temperature of 550 ° C for 4 hours is the catalyst B.

Embodiment 3

[0027] Embodiment 3 catalyst preparation

[0028] Make a solution of ammonium phosphate and zinc nitrate, then impregnate ZSM-5 molecular sieve with a silicon-aluminum ratio of 30 in the solution for 2.0 hours, then dry it at 100°C, and then bake it at 550°C , namely the modified ZSM-5 molecular sieve. Then homogenize 75% ZSM-5 molecular sieve containing phosphorus and zinc, 25% pseudo-boehmite plus alkene nitric acid aqueous solution, and then extrude the strips in the extruder, and put the strip-shaped catalysts in an oven at about 110 ° C. Dry it for 4 hours, and then bake it at a temperature of 550°C for 4 hours, which is Catalyst C.

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PUM

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Abstract

The invention discloses a C4 catalytic conversion method. According to the method, C4 is subject to a reaction in a reactor under the existence of a modified shape-selective molecular sieve catalyst, a temperature of 230 to 450 DEG C, a pressure of 0.1 to 1.0MPa, and an air speed of 0.01 to 1.2 hour<-1>; an obtained reaction product is separated, such that propane and arene are obtained. Calculated according to a total weight of the catalyst, the catalyst is composed of 15 to 95% of a molecular sieve and 5 to 85% of a binder.

Description

technical field [0001] The invention relates to the preparation of hydrocarbons from the redistribution reaction of hydrocarbons containing different carbon numbers, in particular to a catalytic conversion method for producing propane and aromatic hydrocarbons by using carbon tetrahydrocarbons for catalytic conversion. Background technique [0002] Butane is one of the main components of C4 hydrocarbons. It is a general name for n-butane and isobutane. It mainly comes from oilfield gas, petroleum secondary processing and tube furnace steam cracking and other processes. In addition to being used as fuel, butane is mainly used in the petrochemical industry as follows: n-butane is used as a raw material for the production of maleic anhydride, as a raw material for the production of ethylene and propylene by steam cracking in tube furnaces; isobutane is produced by high-temperature catalytic dehydrogenation Isobutene, under the action of concentrated sulfuric acid, hydrofluoric ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C9/08C07C15/00C07C4/00C07C2/00B01J29/40
Inventor 王明党郑红霞李彦平岳晓伟
Owner CHINA PETROLEUM & CHEM CORP