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Process for producing light olefin hydrocarbon by oxygen-containing compound catalytic conversion

A light olefin, catalytic conversion technology, applied in the direction of hydrocarbon production from oxygen-containing organic compounds, chemical instruments and methods, physical/chemical process catalysts, etc.

Active Publication Date: 2011-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is the problem that the selectivity of light olefins in the prior art is not high, and a new catalytic conversion system for oxygenates is provided light olefins method

Method used

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  • Process for producing light olefin hydrocarbon by oxygen-containing compound catalytic conversion
  • Process for producing light olefin hydrocarbon by oxygen-containing compound catalytic conversion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～4

[0019] In the small-scale fluidized bed reaction regeneration device, pure methanol is used as feed, the catalyst type is shown in Table 1, the average temperature of the reaction zone is 500 ° C, and the methanol weight hourly space velocity is 25 hours -1 , The reaction pressure (gauge pressure) is 0.1MPa. To maintain the stability of the catalyst flow control, the reactor outlet product was analyzed by online gas chromatography. The experimental results are shown in Table 1.

[0020] Table 1

[0021] parameters

Embodiment 5～6

[0023] According to the conditions described in Example 4, the reactor temperature was changed, and the experimental results are shown in Table 2.

[0024] Table 2

[0025] parameters

Embodiment 7～8

[0027] According to the conditions described in Example 4, the type of raw material and the weight hourly space velocity of the raw material were changed, and the experimental results are shown in Table 3.

[0028] table 3

[0029] parameters

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Abstract

The present invention relates to a method used for transforming oxygen-containing compounds into light olefins and mainly solves the problem of the low selectivity of the products when the oxygen-containing compounds are used for preparing the light olefins. The method adopts the following steps to well solve the problem: (a) in the reaction zone of a reactor, the raw materials that comprise the oxygen-containing compounds and zeolite catalysts react under the effective conditions to generate products, which comprise the light olefins and by-products, and the zeolite catalysts with coke; (b) at least part of the zeolite catalysts with the coke is regenerated so as to remove part of the coke; the index of carbon loss in the reaction and generation is guaranteed between 0.001 and 0.1; thus at least part of regenerated catalysts can be prepared; (c) the regenerated catalysts return into the reaction zone of the reactor; (d) the steps from (a) to (c) are repeated. The method can be used for the industrial production of the light olefins.

Description

technical field [0001] The invention relates to a method for producing light olefins by catalytic conversion of oxygen-containing compounds. technical background [0002] Light olefins, namely ethylene and propylene, are two important basic chemical raw materials, and their demand is increasing. Generally, ethylene and propylene are produced through petroleum routes, but due to the limited supply and high price of petroleum resources, the cost of producing ethylene and propylene from petroleum resources continues to increase. In recent years, people have begun to vigorously develop the technology of converting alternative raw materials into ethylene and propylene. Among them, an important class of alternative raw materials for the production of light olefins are oxygenates, such as alcohols (methanol, ethanol), ethers (dimethyl ether, methyl ethyl ether), esters (dimethyl carbonate, methyl formate Esters), etc., these oxygenated compounds can be converted from coal, natu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C1/20C07C11/02B01J29/90B01J29/85
CPCY02P20/584
Inventor 齐国祯钟思青王洪涛王华文
Owner CHINA PETROLEUM & CHEM CORP