Tosco Corporation

Frank C Haas

Gerald B Faudel

Manuel M Gutierrez

William K Hesse

A method for removing nitric oxide from gas streams containing same. The nitric acid is removed by contacting the nitric oxide with elemental iron in the presence of water. The nitric oxide is believed to be reduced to nitrogen gas. The method has particular applications to removal of nitric oxide from gas streams produced during combustion of carbonaceous materials.

Method for the removal of nitric oxide from gas streams

The present invention relates to a method for removing zinc from solid carbon black, preferably obtained from the pyrolysis of rubber, said carbon black containing at least 3%, by weight, of zinc, calculated as ZnO, said method including the steps of contacting the carbon black at a temperature of at least 750.degree. C. with a gas selected from chlorine and hydrogen chloride to form gaseous zinc chloride from the zinc contained in said carbon black, and separating the gaseous zinc chloride from the solid carbon black.

Method for easily removing zinc from carbon black contaminated with zinc

Petroleum coke containing inorganic compounds including vanadium is gasified with steam in the presence of an alkali metal salt gasification catalyst to produce a combustible gas and an inorganic ash composed primarily of said inorganic compounds and a water soluble alkali metal vanadate and the inorganic ash is placed in a sufficient amount of water to dissolve the vanadate compound and then is recovered by conventional means.

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Arvada, CO, United States of America

Frank C Haas