METHOD OF PREPARING MIXTURE OF GASEOUS HYDROCARBONS FOR TRANSPORTATION

摘要

FIELD: chemistry.SUBSTANCE: invention relates to oil and gas extraction industry. The invention relates to a method of preparing a mixture of gaseous hydrocarbons for transportation, which involves low-temperature separation of the starting mixture of gaseous hydrocarbons to extract the gas fraction and the unstable hydrocarbon condensate, followed by stabilisation of the hydrocarbon condensate and extraction of the liquefied propane-butane fraction. Before stabilisation, the unstable hydrocarbon condensate undergoes deethanisation; the liquefied propane-butane fraction undergoes catalytic dehydrocyclodimerisation in two series reactors, wherein butane is converted in the first reactor and propane is converted in the second reactor to obtain aromatic hydrocarbons and gaseous hydrocarbon fractions, wherein the gaseous hydrocarbon fraction is compressed and returned into the gas fraction stream at the low-temperature separation step.EFFECT: transportation of the mixture to obtain products in natural climatic conditions of the Far North.1 dwg