Syngas production method
AssigneeThyssenkrupp Uhde GmbH
InventorJohannes Menzel
Life of this patent
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Abstract
An H2- and CO-containing synthesis gas is made by separating coke-oven gas from a coke-oven process into hydrogen and a residual gas stream containing hydrocarbons and obtaining a CO-rich synthesis-gas stream from a top gas of a blast furnace. The hydrogen separated from the coke-oven gas is fed into the CO-rich synthesis gas stream obtained from the top gas of a blast furnace to make the synthesis gas, and the hydrocarbon-containing residual gas stream is fed into the blast furnace as feedstock.
Claims6
A method of making an H2- and CO-containing synthesis gas, the method comprising the steps of:
- (a) separating coke-oven gas from a coke-oven process into hydrogen and a residual gas stream containing hydrocarbons and CO,
- (b) obtaining charging a blast furnace with iron ore, oxygen, fuel and a carbon-containing reduction agent to process iron ore into iron, feeding CO2 into the blast furnace to control a CO/H2 ratio of a top gas formed in the blast furnace thereby forming a CO-rich synthesis gas stream and drawing off the CO-rich synthesis-gas stream from the top gas of the blast furnace,
- (c) feeding the hydrogen separated from the coke-oven gas according to step (a) into the CO-rich synthesis gas stream drawn off from the top gas of the blast furnace according to step (b) to make the synthesis gas, and
- (d) feeding the residual gas stream containing hydrocarbons and CO separated from the coke oven gas according to step (a) into the blast furnace where the hydrocarbons serve as feedstock and the CO leads to an increase in the CO-rich synthesis gas stream drawn off from top gas from the blast furnace according to step (b), which is used to make the synthesis gas.
A method of making an H2- and CO-containing synthesis gas, the method comprising the steps of:
- (a) separating coke-oven gas from a coke-oven process into hydrogen and a residual gas stream containing hydrocarbons and CO,
- (b) charging a blast furnace with iron ore, oxygen, fuel and a carbon-containing reduction agent to process iron ore into iron, feeding CO2 into the blast furnace to increase formation of CO and drawing off a CO-rich synthesis-gas stream from a top gas of the blast furnace,
- (c) feeding the hydrogen separated from the coke-oven gas according to step (a) into the CO-rich synthesis gas stream drawn off from the top gas of a blast furnace according to step (b) to make the synthesis gas, and
- (d) feeding the residual gas stream containing hydrocarbons and CO separated from the coke oven gas according to step (a) into the blast furnace where the hydrocarbons serve as feedstock and the CO leads to an increase in the top gas drawn off from the blast furnace according to step (b), which is used to make the synthesis gas.
Dependencies are inferred from the claim text.