Recycling system for liquefied hydrocarbon

Abstract

The invention relates to the field of safety of hazardous chemical substance loading and unloading, and discloses a recycling system for liquefied hydrocarbon. The recycling system comprises an absorption device, a control device, a condensing device and a storage device, wherein the absorption device is connected with a pipeline between a crane pipe end ball valve and a tank truck end ball valve,and comprises an absorption unit, a pressure transmitter and a switch unit, wherein the absorption unit is used for providing a gasifying environment for the liquefied hydrocarbon in the pipeline andabsorbing the liquefied hydrocarbon; the pressure transmitter is used for detecting the pressure of gasification hydrocarbon in the absorption unit; the switch unit is used for controlling whether tostart the absorption unit; the control device is used for controlling the switch unit to be switched on to release the gasification hydrocarbon in the absorption unit when the pressure of the gasification hydrocarbon in the absorption unit reaches a preset pressure; the condensing device is used for condensing the released gasification hydrocarbon into the liquefied hydrocarbon; and the storage device is used for storing the condensed liquefied hydrocarbon. The recycling system for liquefied hydrocarbon can realize safe and effective recycling of liquefied hydrocarbon residue in a loading andunloading operation process.

Description

technical field [0001] The invention relates to the safety field of loading and unloading hazardous chemicals, in particular to a recovery system for liquefied hydrocarbons. Background technique [0002] As an important chemical raw material, liquefied hydrocarbons can be cracked to produce ethylene, propylene, and butene, and can also be used as fuel. The main mode of transportation is tanker trucks. After the liquefied hydrocarbon filling operation is completed, close the ball valves at the crane pipe end and the tank car end, and then separate the liquid phase quick connector between the crane pipe end and the tank car end. However, when separating the quick connector, since the delivery pressure of liquefied hydrocarbon is about 1.6MPa, the pipeline pressure cannot separate the quick connector. At this time, the liquefied hydrocarbon medium between the crane pipe end and the ball valve at the tanker end must be released. [0003] Article 6.4.3 of the "Code for Design an...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a recovery system for liquefied hydrocarbons, which can effectively solve the problem of in-situ discharge of liquefied hydrocarbon residual liquid between the crane pipe end and the tanker end ball valve when the quick joint is separated, and can realize the loading and unloading operation process Safe and effective recovery of liquefied hydrocarbon raffinate in

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