A method for preparing gasoline blending components from Fischer-Tropsch synthesis oil phase products

Abstract

The invention discloses a method for preparing gasoline blending components by catalytic conversion of Fischer-Tropsch synthesis oil phase products. In this method, the Fischer-Tropsch synthesis oil phase product is used as the main raw material, which is preheated and atomized and then injected into the fluidized bed reactor. Aromatization reaction, the generated oil phase product is fractionated to obtain high-octane gasoline blending components. The characteristics of the technology of the present invention include: the main active component of the catalyst is a molecular sieve with good aromatization performance, and the chain hydrocarbon molecules in the oil phase product of Fischer-Tropsch synthesis first undergo cracking reaction at low temperature to form olefin intermediates. The yield of cracked gas ensures the yield of gasoline, and the olefin intermediates undergo aromatization reaction at high temperature to improve the quality of gasoline products. The technology of the invention has the advantages of simple process, high product gasoline yield, high octane number and high content of aromatics.

Description

technical field [0001] The invention belongs to the field of petrochemical industry and relates to a method for preparing gasoline blending components by catalytic conversion of Fischer-Tropsch synthesis oil phase products. Background technique [0002] With the sustained and rapid development of my country's social economy, the people's economic conditions have been greatly improved, and the number of automobiles is increasing day by day, forming a huge demand for oil products. However, my country's crude oil supply capacity is increasingly stretched, and crude oil imports are increasing year by year. Restricted by the quality of crude oil from self-owned oilfields and import channels, the crude oil processed in my country is becoming increasingly heavy and highly vulcanized. The increase in the use of automobiles has led to increasingly serious environmental pollution problems in our country. The high sulfur content and high olefin content in commercial vehicle gasoline ...

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Problems solved by technology

However, under the traditional catalytic cracking reaction conditions where the oil agent is exposed to high temperature, the cracking reaction of the Fischer-Tropsch synthesis oil phase product can only obtain a large amount of gas and olefins (as described in the above-mentioned USP4684756 and Catalysis Today, 2012, 196: 42-55 documents), It is impossible to inherit high-octane aromatic components from raw oil like traditional catalytic cracking gasoline, so it is difficult to obtain gasoline blending components with reasonable properties

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