초록 ▼

The invention relates to a process for the preparation of a reducing gas having a high reduction potential by catalytic conversion in two steps of a sulphur-free gas mixture of hydrocarbons having a high content of hydrocarbons with two or more carbon atoms. In the first step an inlet stream of at l

The invention relates to a process for the preparation of a reducing gas having a high reduction potential by catalytic conversion in two steps of a sulphur-free gas mixture of hydrocarbons having a high content of hydrocarbons with two or more carbon atoms. In the first step an inlet stream of at least a part of the gas mixture together with added steam is passed through an adiabatic reactor containing a steam reforming catalyst at an inlet temperature of 440°-510°C. and an outlet temperature of 400°-500°C. and at a pressure of 1-30 kg/cm2g the amount of steam added being calculated for obtaining in the inlet stream an H/C ratio of at least 4.8 and an O/C ratio of between 0.5 and 1. The outlet stream from the first step is combined with the top-gas from a reduction furnace, and the combined stream is then further converted in the second step by steam reforming into a reducing gas.

대표청구항 ▼

A process for the preparation of a reducing gas containing hydrogen and/or carbon monoxide and having a high reduction potential by catalytic conversion in two steps of a sulphur-free hydrocarbon feedstock gas having a content of hydrocarbons having two or more carbon atoms of up to 70% and a conten

A process for the preparation of a reducing gas containing hydrogen and/or carbon monoxide and having a high reduction potential by catalytic conversion in two steps of a sulphur-free hydrocarbon feedstock gas having a content of hydrocarbons having two or more carbon atoms of up to 70% and a content of hydrocarbons having three or more carbon atoms at the same time of up to 40%, the percentages being calculated on basis of the number of carbon atoms, wherein, in the first step at least a part of the gas together with added steam is passed as an inlet stream through an adiabatic reactor containing a steam reforming catalyst at an inlet temperature of 440°-510°C. and an outlet temperature of 400°-500°C. and at a pressure of 1-30 kg/cm2 g, the amount of added steam being calculated for obtaining in the inlet stream an H/C ratio of at least 4.8 and an O/C ratio of between 0.5 and 1, the outlet gas stream from the adiabatic reactor being combined with the outlet gas stream from a reduction furnace, and in the second step the combined stream is further converted by steam reforming into a reducing gas.