METHOD FOR COMPLEX PROCESSING OF GASEOUS CARBON-CONTAINING MATERIAL (VERSIONS) Russian patent published in 2013 - IPC C10G2/00 C01B3/00 C01B3/02 C01B3/24 C07C1/04 C07C1/10 C07C2/00 

FIELD: chemistry.

SUBSTANCE: method for complex processing of gaseous carbon-containing material relates to methods of processing methane-containing gases, including coalmine methane, coal bed methane, natural and coke gas and different metallurgical gases. The method for complex processing of gaseous carbon-containing material involves a step for plasma-chemical conversion of material to obtain synthesis gas, a step for converting synthesis gas and auxiliary steps - heat recuperation, electric power generation, cleaning and compressing synthesis gas, separating gases and air. The gaseous carbon-containing material used is coal bed methane with air concentration of not more than 60 vol. %, which is divided into two streams: the methane-poor stream is fed for burning and the methane-rich stream, one part of which along with oxygen separated from air or oxygen and water vapour is fed into at least one electric-arc plasmatron, and the other methane-rich part of the stream is heated to temperature of 100-400°C and fed to a step for saturation and removing methanol, where the gas stream is brought into contact with methanol water which is fed from the step for converting synthesis gas; the process for heat-mass-exchange of the gas with the liquid is carried out on a solid support or in a centrifugal-bubbling layer, wherein water from which methanol has been removed is used to produce water vapour and the output gas stream is heated at the heat recuperation step and together with the heated oxygen and the stream coming out of the plasmatron at temperature higher than 1500°C is fed into the mixing chamber of the plasma-chemical reactor to obtain synthesis gas containing up to 20 vol. % nitrogen, wherein the synthesis gas is cooled at the heat recuperation step and after passing the purification and compression step is fed into a catalytic reactor for the synthesis gas conversion step, where the synthesis gas conversion process takes place at pressure of 40-150 atm or in one zone or two successive zones of the catalytic reactor; gaseous reaction products and unreacted synthesis gas components are recirculated with multistep cooling of the gas coming out of the reactor to 10-30°C and the desired organic product is condensed, for example, a gasoline cut or byproducts - methanol water and hydrocarbon gases, which are fed into the plasma-chemical reactor or to the electric power generation step, wherein the relief gas from recycling is fed for burning or is divided into two streams: a nitrogen-rich stream which is burnt; nitrogen-poor synthesis gas which is compressed and fed for mixing with synthesis gas which is purified and compressed to operating pressure, wherein the methane-poor stream, the relief gas or nitrogen-rich stream is fed to the electric power generation step. Two versions of the method are provided.

EFFECT: achieving high recuperation of physical heat of streams, using energy potential of material for complete independency of converting gaseous carbon-containing material, ecologically clean production, creating conditions for a safe process of extracting and processing methane-air mixtures, recycling gaseous carbon-containing material.

14 cl, 6 dwg, 5 ex