US 2019/0169513 A1 · PROCESS AND A SYSTEM FOR PRODUCING SYNTHESIS GAS

Abstract

The present disclosure relates to a process and a system for producing synthesis gas. The carbonaceous feedstock is gasified, in the presence of at least one of oxygen and steam, in a first reactor to obtain a gaseous mixture comprising H2, CO, CH4, CO2, H2O, tar and char. The gaseous mixture is treated in a second, reactor, in the presence of a catalyst, to obtain synthesis gas. The system comprises a first reactor, a connecting conduit, a second reactor, at least one cyclone separator, at least one heat exchanger and at least one synthesis gas filter unit. The process and the system of the present disclosure are capable of producing synthesis gas with comparatively higher conversion of the unreacted char.

Claims18

Dependent claims

A process for producing synthesis gas with increased H2 to CO molar ratio from a carbonaceous feedstock, said process comprising the following steps:

gasifying said carbonaceous feedstock in a first reactor (100), in the presence of at least one of oxygen and steam, at a temperature in the range of 850° C. to 1800° C. and at a pressure in the range of 1 bar to 60 bar, to obtain a gaseous mixture comprising H2, CO, CH4, CO2, H2O, tar and char where the H2 to CO molar ratio is less than 1.2;
and
further gasifying said gaseous mixture in a second reactor (300) with at least one of steam, CO2, CO and hydrogen, in the presence of a catalyst comprising alkali metal salt impregnated on silica-alumina support and, at a temperature in the range of 600° C. to 850° C. and at a pressure in the range of 1 bar to 60 bar, to obtain synthesis gas with H2/CO molar ratio being in the range of 1.5 to 6.

Dependencies are inferred from the claim text.

Process and a system for producing synthesis gas

Life of this patent

Process and a system for producing synthesis gas

Life of this patent

Abstract

Claims18