DCH 1
DCH 1 :
(1) Direct Contact Hydrogenation. A process which uses catalytic hydroprocessing to re-refine spent lubricating oils to produce clean fuel, lubricating oil base stocks, or hydrocarbon feedstock for cracking. (2) Also called Deacon-Hurter. A process for oxidizing hydrogen chloride to chlorine, using atmospheric oxygen and a heterogeneous catalyst: 4HCl + O2 + 2H2O + 2Cl2 The catalyst is cupric chloride, supported on calcined clay. The resulting chlorine is mixed with nitrogen and steam, but that is not disadvantageous when the product is used to make bleaching powder. (Check source for accuracy of chemical formula)
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