| 摘要 |
FIELD: organic chemistry, chemical technology. ^ SUBSTANCE: invention relates to a method for extraction of acrylonitrile, methacrylonitrile or hydrogen cyanide obtained from the reaction flow in the ammoxidation reaction of propane, propylene or isobutylene that involves passing the reactor flow through absorption column, extraction column and head fraction column. Method involves using such regimen of the process to prevent formation of an aqueous phase above feeding plate in the head fraction column. Method provides reducing unfavorable polymerization of hydrogen cyanide that provides significant decreasing or excluding stoppage of the head fraction column. ^ EFFECT: improved method for extraction. ^ 12 cl, 1 dwg, 7 ex |
