FIELD: chemistry.
SUBSTANCE: invention relates to a method of producing liquid hydrocarbons by conversion of carbon material. Continuous method of converting carbonaceous material is carried out, said material being contained in one or more types of raw material, into a liquid hydrocarbon product, wherein said types of raw materials include carbonaceous material, contained in initial mixture, including one or more fluids, containing water and additionally liquid organic compounds, at least partially obtained using said method, in concentration of at least 10 wt%, wherein obtained original mixture contains at least one homogeneous catalyst in form of a compound of potassium and/or sodium, so as to ensure total concentration of potassium and sodium of at least 0.5 wt%, wherein said method includes: conversion of at least part of carbonaceous material by increasing pressure of initial mixture up to pressure of 275 to 350 bar, heating initial mixture to temperature in range of 380 to 430 °C and holding said pressurised and heated initial mixture in a reaction zone at pressure and temperature in required ranges during a predetermined time, wherein pH value during said conversion is higher than 7, wherein value of pH of initial mixture is measured during and/or after conversion, and if pH measurement result is outside preferred range, composition of initial mixture is changed so as to adjust pH during conversion. Converted initial mixture is cooled to temperature within range of 25 to 200 °C and expansion of converted initial mixture up to pressure in range from 1 to 70 bar, which causes conversion of carbonaceous material into liquid hydrocarbon product, then separating from converted initial mixture fractions, containing liquid hydrocarbon product. Wherein said expansion step and cooling step includes a first step of cooling said initial converted mixture at working pressure of up to temperature within range from 100 to 200 °C by heat exchange with input initial mixture and subsequent expansion of said stream of cooled products into one or more steps of at least one of said expansion steps, including expansion in a separator of instant action to pressure in range from 50 to 70 bar, to produce a gas phase and a liquid phase, and further cooling of gas phase in first condenser to temperature in range of 35–80 °C, and cooling gas phase from said first condenser to temperature in range from 12 to 30 °C to produce condensate containing liquid CO2.
EFFECT: technical result is improvement of process of producing liquid hydrocarbons.
12 cl, 2 tbl, 18 dwg, 6 ex
