Production process of high-purity n-butane

Abstract

The invention provides a production process of high-purity n-butane, and relates to the technical field of chemical engineering. The high-purity n-butane production process comprises the following specific steps: S1, conveying liquefied gas developed in an oil field gas well by using a gas conveying pipeline, compressing the liquefied gas by using a pressure pump after the liquefied gas is conveyed to the tail end of the gas conveying pipeline, and storing the compressed liquefied gas in a gas storage tank, so the liquefied gas is liquefied and cooled in the gas storage tank to form liquefied petroleum gas; S2, processing the liquefied and cooled liquefied petroleum gas by utilizing a distillation method, and separating the liquefied petroleum gas to obtain crude butane; S3, separating the liquefied petroleum gas to obtain crude butane as a raw material; introducing liquefied gas into the top of a rectifying tower by using a gas conveying pipeline, distilling and separating the liquefied gas serving as a raw material to obtain butane, and carrying out deep processing on the n-butane by adopting a rectification and separation adsorption method, so the n-butane with higher purity can be prepared. Therefore, the overall working efficiency is greatly improved.

Description

technical field [0001] The invention relates to the technical field of chemical industry, in particular to a high-purity n-butane production process. Background technique [0002] N-butane is a colorless gas, which is contained in oilfield gas, wet natural gas and cracked gas. It is flammable and can form an explosive mixture when mixed with air. There is a danger of combustion and explosion when it encounters a heat source or an open flame, and it reacts violently with an oxidant. , the density of the gas is greater than that of air, and it can diffuse to a considerable distance at a lower place. It will catch fire and burn back when it encounters a fire source. n-butane has a slight unpleasant smell, insoluble in water, easily soluble in alcohol and chloroform, and can be used as a solvent , refrigerants and organic synthetic raw materials. [0003] Due to the rich coal resources and large coke output in my country, the supply of coking benzene, a downstream product of co...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the deficiencies of the prior art, the present invention provides a high-purity n-butane production process, which solves the relatively backward production and processing technology of n-butane prepared from liquefied petroleum gas with the rapid development of my country's petrochemical industry and the improvement of oil refining capacity question