IMPROVED PROCESS FOR PREPARING HYDROCYANIC ACID
The invention relates to a method for the production of prussic acid, com prising the catalytic dehydration of gaseous formamide to give a product mix ture, containing prussic acid, water, formamide, ammonia, CO and high-boiler s, separation of the product mixture by condensation of a condensate fro...
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Format: | Patent |
Sprache: | eng ; fre |
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Zusammenfassung: | The invention relates to a method for the production of prussic acid, com prising the catalytic dehydration of gaseous formamide to give a product mix ture, containing prussic acid, water, formamide, ammonia, CO and high-boiler s, separation of the product mixture by condensation of a condensate from th e product mixture which contains water, formamide, high-boilers and possibly ammonia and prussic acid, and the partial or complete recycling of the cond ensate to a heat exchanger downstream of the reactor. |
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