Butadiene unloading and recycling system

Abstract

The invention relates to a butadiene unloading and recycling system. The recycling system comprises a spherical tank, a tank car, a compressor, an unloading unit pipeline and a recycling unit pipeline. In the unloading unit pipeline, an air suction port of the compressor is connected with an air outlet in the top of the spherical tank, and an air outlet of the compressor is connected with the top of the tank car. In the recycling unit pipeline, the air suction port of the compressor is connected with the top of the tank car, and the air outlet of the compressor is connected with the top of the spherical tank. The butadiene compressor is adopted to extract butadiene gas from the top of the spherical tank and pressurize the butadiene gas, and then liquid-phase butadiene in the tank car is pressed into the spherical tank; and after unloading is completed, gas-phase butadiene in the spherical tank is also recycled into the spherical tank through the compressor, extra emission and waste cannot be caused in the whole process, increasingly strict environmental protection requirements are met, meanwhile, according to the characteristics of butadiene, a compressor process system meeting the standard is selected, and reliable operation of the butadiene compressor is met.

Description

technical field [0001] The invention relates to the technical field of compressor application, in particular to a butadiene unloading and recovery system. Background technique [0002] Butadiene, namely 1,3-butadiene, is a raw material for the manufacture of synthetic rubber, synthetic resin, nylon, etc., and is a very important chemical raw material. At present, butadiene is mostly transported by tank trucks and stored by spherical tanks. At present, the following problems have occurred in the unloading process of butadiene: (1) the air pressure in the spherical tank is greater than the air pressure in the tank car, so the liquid phase butadiene in the tank car cannot enter the tank car; (2) when After the liquid phase in the tank car is emptied, the gas phase butadiene will remain in the tank car, and this part of butadiene is difficult to enter the spherical tank, thus causing a large waste. [0003] Therefore, this area is badly in need of a kind of butadiene unloading...

AI Technical Summary

Problems solved by technology

At present, the following problems have occurred in the unloading process of butadiene: (1) the air pressure in the spherical tank is greater than the air pressure in the tank car, so the liquid phase butadiene in the tank car cannot enter the tank car; (2) when After the liquid phase in the tank car is emptied, the gas phase butadiene will remain in the tank car, and this part of butadiene is difficult to enter the spherical tank, thus causing a large waste

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