Abstract A reducing gas containing essentially carbon monoxide and hydrogen and only small amounts of water vapor, carbon dioxide and methane is produced by reacting a normally liquid, volatile hydrocarbon with water vapor in two stages under superatmospheric pressure in the presence of nickel-containing catalysts. The improvement of the invention involves adding from 0.02 to 0.1 standard cubic meter of hydrogen per kilogram hydrocarbon to the hydrocarbons to be gasified, subjecting the resulting mixture to a hydrogenation desulfurization and, after adding up to 1.6 kilogram water vapor per kilogram hydrocarbon, reacting said mixture in a one-part first gasification stage at temperatures of 350°-550° C. in the presence of a catalyst containing from 35-70% by weight nickel on a magnesium-containing support thereby producing a high-methane gas which is reacted further in a second stage at temperatures above 850° C. in contact with an indirectly heated heat resistant nickel catalyst.
A process for producing a reducing gas for the reduction of ore, said reducing gas containing essentially carbon monoxide and hydrogen and only small amounts of water vapor, carbon dioxide and methane, which comprises mixing vaporized normally liquid hydrocarbons with 0.05 to 0.1 standard cubic meter of hydrogen per kilogram hydrocarbons and subjecting the resulting mixture to a hydrogenating desulfurization, adding water vapor to the gaseous product of the desulfurization and reacting the mixture containing 1.4 kg. water vapor per kilogram hydrocarbons in a one-part shaft reaction zone at temperatures in the range of 350°-550° C. and at a pressure of 2-16 kilograms per square centimeter in the presence of a catalyst containing 35-70% by weight nickel on a support selected from the group consisting of magnesium silicate and magnesium spinel hereby producing a high-methane gas, reacting said high-methane gas in a tubular reaction zone at temperatures in the range of 950°-1100° C. and at a pressure of 2-16 kilograms per square centimeter in contact with an indirectly heated catalyst containing 10-30% by weight nickel on a support thereby producing said reducing gas.
Claim 2
Dependent Claim
183 words
A process for producing a reducing gas for the reduction of ore, said reducing gas containing essentially carbon monoxide and hydrogen and only small amounts of water vapor, carbon dioxide and methane, which comprises mixing vaporized normally liquid hydrocarbons with 0.05 to 0.1 standard cubic meter of hydrogen per kilogram hydrocarbons and subjecting the resulting mixture to a hydrogenating desulfurization, adding water vapor to the gaseous product of the desulfurization and reacting the mixture containing 1.4 kg. water vapor per kilogram hydrocarbons in a one-part shaft reaction zone at temperatures in the range of 350°-550° C. and at a pressure of 2-16 kilograms per square centimeter in the presence of a catalyst containing 35-70% by weight nickel on a support selected from the group consisting of magnesium silicate and magnesium spinel hereby producing a high-methane gas, reacting said high-methane gas in a tubular reaction zone at temperatures in the range of 950°-1100° C. and at a pressure of 2-16 kilograms per square centimeter in contact with an indirectly heated catalyst containing 10-30% by weight nickel on a support thereby producing said reducing gas.