Shale oil dry distillation refining waste gas resource treatment and recovery method

Abstract

The invention discloses a shale oil dry distillation refining waste gas resource treatment and recovery method. The method comprises the following steps of: condensing waste gas containing light hydrocarbons, aromatic hydrocarbons and the like generated by dry distillation refining of shale oil, enabling the waste gas to pass through a fixed bed adsorption column filled with macroporous aromatic hydrocarbon ethylene adsorption resin to adsorb the light hydrocarbons and the aromatic hydrocarbons on the adsorption resin, stripping the resin saturated by adsorption through low-pressure steam, condensing the light hydrocarbons and aromatic hydrocarbons which are blown off by a spiral plate heat exchanger, and layering by an oil-water separator, so as to recycle the light hydrocarbons and the aromatic hydrocarbons. The shale oil dry distillation refining light hydrocarbon and aromatic hydrocarbon waste gas is recycled and recovered, more than 95% of light hydrocarbons and aromatic hydrocarbons are recovered, the unification of waste gas treatment and resource utilization is realized, the coking phenomenon in the dry distillation process is avoided, the influence on production is avoided, and the method has great benefits for shale oil dry distillation oil production enterprises in China.

Description

technical field [0001] The invention belongs to the technical field of petrochemical shale oil carbonization and refining waste gas resource management and recycling, and specifically relates to a method of using macroporous adsorption resin to absorb light hydrocarbons and aromatic hydrocarbons in waste gas, so as to desorb and recover shale oil dry distillation and refining waste gas Reapply to production to reduce production costs. Background technique [0002] Shale oil refers to the petroleum resources contained in shale formations dominated by shale. These include oil in the pores and fractures of shale, as well as oil resources in adjacent and interlayers of tight carbonatite or clastic rock in shale formations. [0003] Usually effective development methods are horizontal wells and staged fracturing techniques. In the field of solid minerals, shale oil is a kind of artificial petroleum, which is a brown viscous liquid product with a special pungent smell produced b...

AI Technical Summary

Problems solved by technology

The mined shale is obtained by carbonization and refining to obtain oil, and then cracked to obtain various components of light oil, aromatic hydrocarbons, paraffin oil, etc., to supplement the shortage of crude oil in my country, and in the process of carbonization to generate waste gas, part of it is used as heating gas Continue to retort, part of it will be directly evacuated and burned, which wastes resources. At the same time, when it is used as retort heating gas, there will be coking phenomenon, which will cause coking in the retort furnace to affect the heating efficiency and further affect the production output.