Abstract: The present invention provides a method of desulfurizing hot metal, which method utilizes desulfurization slag resulting from a KR hot metal desulfurizing treatment as a desulfurizing agent for hot metal again to reduce hot metal desulfurization costs and the amount of slag generated, thereby solving environmental problems.

Abstract: The present invention provides a method of desulfurizing hot metal, which method utilizes desulfurization slag resulting from a KR hot metal desulfurizing treatment as a desulfurizing agent for hot metal again to reduce hot metal desulfurization costs and the amount of slag generated, thereby solving environmental problems.

Abstract: A gas oil desulfurization catalyst and the desulfurization method are disclosed, which comprises(A) at least one kind of a metal selected from the group consisting of Mo and W,(B) at least one kind of a metal selected from the group consisting of Co and Ni, and(C) at least one kind of a metal selected from Re and Ir, as the active components.

Abstract: A process is disclosed for recovering a volatile organic compound at a recovery of 90 to 96% by volume from a gas generated from gasoline, kerosine, benzene, and alcohol discharged from storage tanks, tank trucks, and tank lorries. In the process comprising absorption stages followed by desorption stages for the volatile organic compound, the pressure at the desorption stages is controlled within the area below, for instance, curves C' and B in FIG. 1 of the drawings according to the concentration of the volatile organic compound in the gas to be fed to a first absorption stage.

Abstract: The present invention provides a method for producing raw materials for a reformer by cracking and desulfurizing petroleum fuels, characterized by cracking and desulfurizing petroleum fuels in a desulfurizer in the fuel cell electricity generation process at a temperature of 300.degree.-600.degree. C., preferably 350.degree.-500.degree. C., a pressure of 1-10 kg/cm.sup.2, an H.sub.2 /oil of 500-2000, preferably 800-1000, and an SV of 0.5-4 hr.sup.-1 using a zeolite catalyst such as Y-type zeolite or a metallosilicate catalyst such as one having an Si/Me atomic ratio of 40-3200 where Me is Al, Ni, Co, Mo, W, Fe, Cr or Ga.

Abstract: The present invention provides an improved fuel cell electricity generation rocess which includes a desulfurizer, an adsorber, a reformer, a shift converter, and a fuel cell wherein reformed gas from the reformer is treated using a non-porous gas separation membrane comprising a polymer in place of the converter at a temperature of 50.degree.-150.degree. C. and a pressure of 2-10 kg/cm.sup.2 to separate carbon monoxide contained in the reformed gas.

Abstract: By contacting a gas which contains vapors of volatile organic materials with an absorption liquid comprising a refined mineral oil and one or more compounds selected out of the group consisting of phthalic esters, silicic esters, phosphoric esters, carboxylic esters, alkyl benzenes, alkyl naphthalenes, and .alpha.-olefin oligomers, the volatile organic materials can be readily absorbed into the absorption liquid and thereafter effectively separated and recovered from the absorption liquid.