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Methanol to Olefins Process

A technology for producing olefins and methanol from methanol is applied in the production of hydrocarbons from oxygen-containing organic compounds, ethylene production, biological raw materials, etc., and can solve the problems of large hydrogen production and achieve good technical effects

Active Publication Date: 2011-12-28
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is the problem of relatively large hydrogen generation in the prior art, and a new method for methanol to olefins is provided

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] In the small-scale circulating fluidized bed reaction-regeneration device, the catalyst is SAPO-34, the mass content of SAPO-34 molecular sieve is 40%, the feed is methanol with a purity of 99.5%, the reaction temperature is 475°C, and the reaction pressure is gauge pressure. is 0.01Mpa, and the gas phase velocity is 1.5 m / s. The reaction product is analyzed by online gas chromatography. The experimental results are shown in Table 1.

[0017] Table 1

[0018]

Embodiment 2

[0020] According to the conditions and steps described in Example 1, the SAPO-34 molecular sieve mass content is 20%, the feed is methanol with a purity of 99.5%, the reaction temperature is 500 ° C, and the reaction pressure is 0.01Mpa in terms of gauge pressure. is 0.4 m / s, and the reaction product is analyzed by online gas chromatography, and the experimental results are shown in Table 2.

[0021] Table 2

[0022]

Embodiment 3

[0024] According to the conditions and steps described in Example 1, the SAPO-34 molecular sieve mass content is 30%, the feedstock is methanol with a purity of 99.5%, the reaction temperature is 400 ° C, and the reaction pressure is 0.01Mpa in terms of gauge pressure. is 0.6 m / s, and the reaction product is analyzed by online gas chromatography, and the experimental results are shown in Table 3.

[0025] table 3

[0026]

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PUM

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Abstract

The invention relates to a method for preparing olefin from methanol. The method mainly solves the problem of high hydrogen generating quantity in the prior art. The method for preparing the olefin from the methanol is characterized by comprising the following steps of: delivering the methanol raw material into a fluidized bed reactor, making the methanol in contact with an equilibrium catalyst containing CO combustion improver and SAPO-34 molecular sieve, and generating a product comprising low-carbon olefin under effective conditions, wherein the mass of the CO combustion improver accounts for 0.1 to 1.5 percent of the mass of the equilibrium catalyst in the fluidized bed reactor. The problem is well solved by the technical scheme that the hydrogen generating quantity of the method is improved by less than 25 percent compared with the hydrogen generating quantity obtained by a method using no CO combustion improver, and the method can be used for industrial production of the low-carbon olefin.

Description

technical field [0001] The invention relates to a method for producing olefins from methanol. technical background [0002] Low-carbon 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, natural gas, biomass and other energy sources. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C1/20C07C11/04C07C11/06
CPCY02P30/20Y02P30/40
Inventor 齐国祯钟思青金永明王华文
Owner CHINA PETROLEUM & CHEM CORP