Hydrocracking product separation system

Abstract

The hydrocracking product separation system is characterized in that the output end of a stripping tower is connected with the input end of a naphtha stabilizing tower, the naphtha stabilizing tower is connected with a crude liquefied gas outlet device, and the output end of the naphtha stabilizing tower is connected with the input end of a naphtha fractionating tower; the naphtha fractionating tower is connected with the pumice discharging device, the heavy stone discharging device and the diesel oil discharging device, the output end of the naphtha fractionating tower is connected with the input end of the heavy stone desulfurization device, a flow guide hole is formed in a pipeline, a limiting assembly capable of sliding relative to the pipeline is arranged in the pipeline, and when liquid flows into the pipeline and generates pressure on the limiting assembly, the limiting assembly shrinks. According to the embodiment of the invention, the equipment investment can be reduced, the heat integration is more sufficient, the energy consumption of the fractionation system is reduced, the product yield is improved, the number of the flow guide holes for discharging the liquid can be regulated and controlled by regulating and controlling the flow of the liquid, the discharging speed of the liquid is further regulated and controlled, the use is convenient, and the working efficiency is improved.

Description

technical field [0001] Each embodiment of the present application belongs to the technical field of hydrocracking product separation, and in particular relates to a hydrocracking product separation system. Background technique [0002] Hydrocracking is one of the main methods of petroleum secondary processing. The raw material for hydrocracking is usually heavy distillate obtained from crude oil distillation. The process of liquid hydrocarbons, light naphtha, heavy naphtha, aviation kerosene and diesel oil is mainly composed of two parts: reaction and separation. Traditional heavy oil hydrocracking product separation systems mostly use atmospheric distillation for separation, and the main problems are as follows: [0003] 1. There are more light components in tail oil products, and the yield of light lubricating oil products is higher; [0004] 2. The stabilizing tower and naphtha fractionation tower have heavy load and high energy consumption; [0005] 3. When separating...

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Problems solved by technology

[0004] 2. The stabilizing tower and naphtha fractionation tower have heavy load and high energy consumption;

[0005] 3. When separating the separated substances, the existing equipment is inconvenient to regulate the flow rate of the liquid. Therefore, when desulfurization is performed, the progress of desulfurization is seriously affected and the work efficiency is reduced.

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