| 摘要 |
<p>A process is described in which coal and/or coke are/is gasified by reaction with water vapor in the presence of a suitable metal and/or its oxide. The products of the process are combustible gas, essentially carbon monoxide and hydrogen, and metal. The relative quantities of the products are chosen at will, e.g. according to the demands of the market, by appropriate choice of proportions of input raw materials. The process is limited to metals that catalyze the gasification and that can be produced by reduction of their oxides with the aid of coal and/or coke. Such metals are such as belong to the group iron, cobalt, and nickel. When iron and/or iron oxide is used, the process is conducted in the temperature range 728-1490 DEG C preferably at about 1150 DEG C, and at essentially the pressure of the ambient atmosphere. An essential part of the process is the purification of the gas, especially with respect to sulfur and metals, the sulfur being in the form of hydrogen sulfide, the metals being in the form of vapors of metals or metal oxides. This is done by known methods, e.g. cooling and treatment with bog ore.</p> |
