公开(公告)号：US3702887A

公开(公告)日：1972-11-14

申请号：US3702887D

申请日：1970-12-04

Applicant: KNAPSACK AG

Inventor： SENNEWALD KURT ,  WESSELMANN RUDOLF ,  HOLLER ERNST ,  MULLER HEINZ

IPC: C01C3/04 ,  C01C3/02 ,  F25J3/00

CPC classification number: C01C3/0204

Abstract: COLLECTED IN ONE OR MORE CONDENSERS; A PORTION OF HYDROCYANIC ACID IS CONTINUOUSLY REMOVED THEREFROM, RECYCLED TO THE HEAD OF THE CONDENSER(S) AND SPRAYED THEREINTO.

IMPROVED PRODUCTION OF AQUEOUS HYDROCYANIC ACID BY SUBJECTING FORMAMIDE TO A CLEAVAGE REACTION UNDER REDUCED PRESSURE AND AT ELEVATED TEMPERATURES, WHEREIN THE HYDROCYANIC ACID-CONTAINING CLEAVAGE GAS, WHICH IS FREED FROM AMMONIA AND COOLED, IS COMPRESSED SUBSTANTIALLY TO ATMOSPHERIC PRESSURE AND LIQUEFIED. THE COMPRESSED CLEAVAGE GAS IS MORE PARTICULARLY LIQUEFIED IN ONE OR MORE CONDENSERS, WHICH ARE ARRANGED IN UPRIGHT POSITION AND SERIES-CONNECTED TOGETHER; THE RESULTING AQUEOUS HYDROCYANIC ACID IS