Method for preparing olefine from synthesis gas

A technology for producing olefins and synthesis gas, which is applied in the direction of producing hydrocarbons from carbon oxides, chemical instruments and methods, metal/metal oxides/metal hydroxide catalysts, etc. It can solve the problems of poor olefin selectivity and improve selectivity Effect

Active Publication Date: 2014-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is low C in Fischer-Tropsch synthesis in the

Method used

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  • Method for preparing olefine from synthesis gas
  • Method for preparing olefine from synthesis gas
  • Method for preparing olefine from synthesis gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] The silica sol containing 300 g of silicon dioxide was spray-molded and calcined at 750° C. for 6 hours to obtain carrier S, and the 15-150 μm portion was screened for use. Dissolve 187.5g of ferric nitrate hexahydrate, 65g of manganese nitrate, 19g of copper nitrate trihydrate and 5.17g of potassium nitrate in water to form a solution.

[0018] Weigh 80g of prepared SiO 2 Carrier, the above solution is impregnated onto the carrier by impregnation method, baked at 120°C for 6 hours, and then calcined at 600°C for 2 hours to obtain the catalyst core in parts by weight of 20 parts of Fe 30 mn 20 Cu 5 K 2 +80 parts of carrier, the subscript numbers are parts by weight.

[0019] Spray-coat the slurry containing 20 grams of ZSM-5 molecular sieve with a Si / Al molar ratio of 30 onto the prepared catalyst core, dry at 100° C. for 4 hours, and roast at 550° C. for 2 hours to obtain the catalyst.

[0020] At a reaction temperature of 280°C and a reaction pressure of 1.0MPa, ...

Embodiment 2-10

[0023] The catalyst core composition, preparation method and preparation conditions are shown in Table 1, the composition and thickness of the shell layer are shown in Table 2, and the specific reaction conditions and results are shown in Table 3.

[0024]

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Abstract

The invention relates to a method for preparing olefine from synthesis gas, which mainly solves the problem of poor low-carbon olefine selectivity in the existing technology. According to the technical scheme of the invention, the method for preparing olefine from synthesis gas comprises the following step: by taking CO and H2 mixed gas as a raw material, performing contact reaction on the raw material and a catalyst to generate olefine, wherein the used catalyst comprises the following components in parts by weight: 1-20 parts of one shell selected from ZSM-5 or beta zeolite and 80-99 parts of core; and the core comprises the following components in parts by weight: 50-100 parts of at least one oxide carrier selected from Al2O3 and SiO2 and the following components carried thereon: 5-50 parts of at least one metal of Fe and Co or oxide thereof, 1-30 parts of at least one metal selected from Mn, Zn and Cu and oxide thereof, and 0.1-5 parts of oxide or hydroxide of at least one selected from K, Rb and Cs. Thus, favorable technical effect is achieved; and the method can be used for preparing olefine from synthesis gas.

Description

technical field [0001] The invention relates to a method for producing olefins from synthesis gas. Background technique [0002] The method of converting synthesis gas into liquid hydrocarbons through catalyst action was invented by German scientists Frans Fischer and Hans Tropsch in 1923, referred to as F-T synthesis, that is, CO undergoes a heterogeneous catalytic hydrogenation reaction on a metal catalyst to produce linear alkanes and Olefin-based mixture process. Germany carried out research and development in the 1920s and realized industrialization in 1936. After World War II, it was closed because it could not compete economically with the oil industry; South Africa has abundant coal resources, but lacks oil resources and has long-term Restricted by international social economic and political sanctions, it was forced to develop coal-to-oil industrial technology, and built the first coal-based F-T synthetic oil plant (Sasol-1) with a production capacity of 250,000-400...

Claims

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Application Information

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IPC IPC(8): C07C11/02C07C1/04B01J29/03B01J23/48B01J29/78B01J35/00
CPCY02P20/52
Inventor 宋卫林李剑锋
Owner CHINA PETROLEUM & CHEM CORP
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