Method for steam reforming carbonaceous material

摘要

A method for steam reforming carbonaceous material into a synthesis gas by using a single stage process of heating the carbonaceous material in a rotary kiln at an elevated reforming temperature so that the carbonaceous material undergoes substantially complete conversion to synthesis gas or by using a dual stream, multiple-stage process of heating carbonaceous material to a reforming temperature, below that at which metallic materials will typically vaporize, to form gaseous and solid materials; further reforming the gaseous materials in a second stage reforming kiln at an elevated reforming temperature to form synthesis gas; and separating carbon char from the solid material for further processing.

主权项

1. A method for steam reforming carbonaceous material into synthesis gas, said method comprising:
feeding an input of carbonaceous material into a steam reforming rotary kiln; agitating the carbonaceous material using the steam reforming rotary kiln; externally heating the steam reforming rotary kiln to heat the carbonaceous material within the rotary kiln to an elevated reforming temperature of from about 650 to 1100° C. in the presence of water or steam, and without addition of carbon dioxide, and wherein the steam reforming rotary kiln is sealed from the atmosphere to prevent the entry of air or oxygen; reforming the carbonaceous material such that the carbonaceous material undergoes substantially complete conversion utilizing only a steam reforming reaction to form synthesis gas comprising primarily hydrogen and carbon monoxide and a minimal amount of inert solid slag.