Bifunctional catalyst-based short-process Fischer-Tropsch synthesis novel oil preparation process

Abstract

The invention discloses a bifunctional catalyst-based short-process Fischer-Tropsch synthesis novel oil preparation process. The process comprises the steps: desulfurating and purifying coarse synthesis gas prepared by taking coal, natural gas or biomass as raw materials, and then adjusting the coarse synthesis gas to raw material synthesis gas with a proper H2/CO molar ratio through a water coal gas shift reaction; and feeding the raw material synthesis gas into a reactor for Fischer-Tropsch synthesis reaction in the presence of the bifunctional catalyst, separating the raw material synthesis gas to directly obtain a gasoline component with a high octane number, reforming methane steam, recovering hydrogen and low carbon hydrocarbon by treating tail gas, and carrying out wastewater treatment after removing alcohol substances from synthetic water, wherein the used catalyst is the bifunctional catalyst which comprises two parts: a molecular sieve and a metal active component, and the metal active component is embedded into a molecular sieve crystal. The Fischer-Tropsch synthesis oil preparation novel process provided by the invention can be used for directly obtaining gasoline which meets the purity and yield requirements with the high octane number through a one-step process, so that integration of Fischer-Tropsch synthesis reaction and product refining is realized, and the process is of great practicality and economical benefits.

Description

technical field [0001] The invention relates to a Fischer-Tropsch synthesis oil production process, in particular to a new short-flow Fischer-Tropsch synthesis oil production process based on a bifunctional catalyst. Background technique [0002] With the rapid development of the economy and the continuous improvement of people's living standards, the demand for refined oil in countries around the world has increased rapidly, the contradiction between oil supply and demand has become increasingly prominent, and international crude oil prices have fluctuated at high levels. At present, fuel oil is mainly obtained through petroleum routes in the world, while petroleum reserves and production volume are gradually decreasing, and the quality of petroleum is gradually becoming heavier and inferior. In addition, with the increasing environmental pollution problems, international and domestic environmental protection laws and regulations are becoming more and more strict on the env...

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