| 摘要 |
A PROCESS FOR DEWATERING HYDROCYANIC ACID BY DISTILLATION WHICH COMPRISES DISTILLING CRUDE HYDROCYANIC ACID CONTAINING FROM 50 TO 99.9% BY WEIGHT OF HCN, FROM 0.1 TO 40% BY WEIGHT OF WATER,FROM 0 TO 15% BY WEIGHT OF CARBON OXIDES AND OPTIONALLY FROM 0.01 TO 1% BY WEIGHT OF AN INVOLATILE STABILIZER, AT A PRESSURE OF FROM 1 BAR TO 2.5 BAR, A BOTTOM TEMPERATURE OF FROM 100°C TO 130°C AND A TOP TEMPERATURE OF FROM 25°C TO 54°C, IN THE ABSENCE OF A VOLATILE STABILIZER, IN A DISTILLATION COLUMN TO OBTAIN A TOP DRAW STREAM CONTAINING PURIFIED, ANHYDROUS HYDROCYANIC ACID AND CARBON OXIDES AND A BOTTOM DRAW STREAM COMPRISING WATER AND, WHERE APPROPRIATE,THE INVOLATILE STABILIZER.
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