METHOD OF PRODUCING HYDROGEN-CONTAINING GAS FROM NATURAL GAS AND SUPERHEATED STEAM AND DEVICE FOR IMPLEMENTATION THEREOF Russian patent published in 2021 - IPC C01B3/02 C01B3/32 C01B3/38 B01J7/00 

FIELD: technological processes.

SUBSTANCE: invention relates to a method of producing hydrogen-containing gas from natural gas and superheated steam, which is carried out in three steps: at the first stage superheated high-pressure steam is mixed with natural gas at 2.5–3 MPa, at a weight ratio of steam to natural gas of 7:1, the obtained steam-methane mixture is heated to temperature of 500–550 °C by gas heat of exit gases of gas turbine fed into adiabatic catalytic reactor, performing steam catalytic conversion of methane in a nickel catalyst, forming in a catalytic reactor a steam-methane-hydrogen mixture containing up to 5 % of hydrogen; at second step, said mixture and swirled compressed air flow are fed into antechamber, fuel natural gas is fed into burner, obtained "rich" fuel-air mixture is burnt at air excess factor of 0.6–0.7, increasing temperature of combustion products to 1300–1350°C and increasing hydrogen fraction to 15–20 % due to high-temperature steam conversion of methane; at the third stage, the "afterburning" combustion chamber burns the "poor" fuel-air mixture at the excess air ratio of 1.5–2.5 and increases the hydrogen content in the combustion products higher than 20 %, diluting compressed air is fed into its combustion products and reduced to the required gas temperature before the gas turbine. Invention also refers to a device for realization of this procedure.

EFFECT: technical result is increase of hydrogen content in gas turbine fuel gas and considerable improvement of their fuel efficiency, as well as environmental friendliness due to significant reduction of hazardous substances content in exhaust gases of gas turbines.

2 cl, 1 dwg