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Syngas to Olefins Process

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: 2016-05-18
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is low C in Fischer-Tropsch synthesis in the prior art 2 -C 4 The problem of poor olefin selectivity provides a new method for producing olefins from syngas

Method used

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  • Syngas to Olefins Process
  • Syngas to Olefins Process
  • Syngas to Olefins Process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] The silica sol containing 300 g of silicon dioxide was spray-molded and calcined at 750° C. for 6 hours to prepare the carrier S, and the 15-150 μm portion was selected for use. Dissolve 187.5 g of ferric nitrate hexahydrate, 65 g of manganese nitrate, 19 g of copper nitrate trihydrate and 5.17 g of potassium nitrate in water to prepare a solution.

[0017] Weigh 80g of SiO prepared 2 For the carrier, the above solution is impregnated on the carrier by the impregnation method, baked at 120°C for 6 hours, and then calcined at 600°C for 2 hours to obtain a catalyst core with 20 parts by weight. 30 Mn 20 Cu 5 K 2 +80 parts carrier, the subscript numbers are parts by weight.

[0018] A slurry containing 20 g of ZSM-5 molecular sieve with a Si / Al molar ratio of 30 was sprayed on the prepared catalyst core, dried at 100°C for 4 hours, and calcined at 550°C for 2 hours to prepare the catalyst.

[0019] At reaction temperature 280℃, reaction pressure 1.0MPa, CO / H 2 (Molar ratio) is 1....

Embodiment 2-10

[0021] 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.

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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 preparing olefins from syngas. 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 FT synthesis, that is, CO undergoes heterogeneous catalytic hydrogenation reaction on metal catalysts to produce linear alkanes and alkenes. The process of the Lord's mixture. Germany carried out research and development in the 1920s and achieved industrialization in 1936. After World War II, it was closed because it was unable to compete with the oil industry economically; South Africa has abundant coal resources, but oil resources are scarce, and for a long time. Restricted by international social, economic and political sanctions, it forced it to develop coal-to-liquid industrial technology, and in 1955 built the first coal-based FT synthetic oil plant (Sasol-1) with a production ca...

Claims

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Application Information

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