Method for producing clean diesel by hydrogen and carbon monoxide

Abstract

The invention discloses a method for producing clean diesel by hydrogen and carbon monoxide. The method comprises the following steps: hydrogen and carbon monoxide enter a heat transfer fixed bed reactor to be in contact with a catalyst to participate in a Fischer-Tropsch synthesis reaction, the synthesized product passes through a hot-cold separator so as to respectively separate heavy hydrocarbons and light hydrocarbons, the light hydrocarbons and hydrogen enter a hydrofining reactor to be in contact with a catalyst to carry out a hydrogenization saturation reaction and a hydrogenization deoxygenation reaction after being mixed, the hydrofined reaction product enters a separation system, the separated tail oil and the heavy hydrocarbons enter a hydrogenization isocracking reactor after being mixed, the product enters the separation system to obtain an intermediate fraction oil product. The method solves the problem that when the Fischer-Tropsch synthesis reaction happens, reaction heat is difficult to control, and difficult heat transfer and hot spots exist in the reactor, and provides the method for producing the clean diesel economically and effectively, and hydrocarbon is produced in the producing process.

Description

technical field [0001] The invention relates to a method for producing clean diesel oil from hydrogen and carbon monoxide, more specifically, a method for producing diesel oil from hydrocarbons obtained through Fischer-Tropsch synthesis reaction through multiple hydrotreating processes. Background technique [0002] Hydrocarbon products are obtained from hydrogen and carbon monoxide through Fischer-Tropsch synthesis (Fischer-Tropsch synthesis). Carbon monoxide and carbon monoxide can be easily converted from coal, natural gas or biomass. This technology path has attracted great attention from the world's energy and chemical industry. Many international energy companies have developed synthetic oil processes with Fischer-Tropsch synthesis as the core. The most successful of these are South Africa's Sasol and Holland's Shell. Sasol's three plants I, II and III have an annual output of 7.2 million tons of oil products and chemicals. The PetroSA project jointly constructed by ...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a method for producing clean diesel oil from hydrogen and carbon monoxide, which not only solves the problems that the heat of reaction is difficult to control when the Fischer-Tropsch synthesis reaction occurs between hydrogen and carbon monoxide, and the problems of difficult heat transfer and hot spots exist in the reactor, but also provides The most economical and effective method of producing diesel oil according to the characteristics of hydrocarbons produced in this process

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