Technological method for hydrogenation of coker full-range distillate

Abstract

The invention discloses a technological method for hydrogenation of a coker full-range distillate. The method comprises: mixing a coker full-range distillate taken as a raw material with hydrogen heated by a heating furnace, passing the mixture through a low-temperature hydrogenation reactor and a hydrofining reactor in order; making a reaction effluent and a hydrocracking effluent enter a gas-liquid separator together, and fractionating an obtained liquid so as to obtain light products and a heavy distillate; leaving the heavy distillate and the heated hydrogen to enter a hydrocracking reactor. Compared with prior art, in the method of the invention, the temperature of each reactor can be controlled through the amounts of hot hydrogen and cold hydrogen, and the reactors are operated flexibly, so that temperature influences among the reactors can be lowered to a minimum. Hydrogen is mixed after coming out of the heating furnace, so that coking of the coker raw material in a furnace tube can be effectively avoided. The low-temperature hydrogenation reactor is arranged for olefin saturation at a low temperature first, and simultaneously coke powder can be uniformly distributed in a protective agent bed layer as possible, thus guaranteeing the long period operation of equipment. The method of the invention has the advantages of good product quality, flexible production scheme, and high heat energy utilization rate.

Description

technical field [0001] The present invention relates to a coking whole distillate fraction hydrogenation process, specifically the hydrogenation refining of coker gasoline, coker diesel oil and coker wax oil, and the organic combination of coker wax oil hydrocracking, with coker whole distillate as raw material, mainly A process for producing clean fuels. Background technique [0002] At present, the demand for light and medium oil products, especially gasoline, in the domestic and foreign oil product markets will continue to rise, while the demand for heavy oil products will show a downward trend. At the same time, the properties of crude oil are deteriorating day by day on a global scale, and environmental regulations are becoming stricter. Therefore, how to realize the lightening of heavy oil at a more economical and reasonable price, and the refining technology that the obtained products can meet the increasingly stringent specifications of gasoline and diesel products ...

AI Technical Summary

Problems solved by technology

This method uses two high-pressure separators, which can produce jet fuel in large quantities, but the process is complicated, the investment is high, and the operation is also difficult.

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