摘要:
A carbon monoxide- and zinc-containing gas is produced by the endothermic reaction of a carbonaceous material with zinc oxide. Zinc separated from the gas is in part reoxidized with air and in part reoxidized with H.sub.2 O to form zinc oxide both in exothermic reactions. Heat developed in these exothermic reoxidations is transferred to the endothermic CO-forming reaction so that the total system is thermally neutral, in other words neither generates nor consumes heat.
摘要:
A carbon source and zinc oxide are reacted in a reactor to form a gas consisting essentially of carbon monoxide and zinc; the zinc is separated from the gas and reoxidized in indirect heat exchange relationship with the reaction mixture of the carbon source and the zinc oxide. A portion of the carbon monoxide and zinc-comprising gas formed can be recycled to the reactor as a fluidizing gas.
摘要:
Waste water having a high chemical oxygen demand caused primarily by soluble organic matter is treated with activated carbon and thereafter passed to a biochemical treating operation.
摘要:
In a process of extractive distillation, the combination of operating with two liquid phases in at least the uppermost trays of the column, preferably while maintaining the column operation at substantially an optimum reflux ratio, results in increased efficiencies and minimum requirements for selective solvent.