Hydrogen cyanide manufacturing process with second waste heat boiler

• Main Authors: STEINER WILLIAM J, OSTERMAIER JOHN J, CATON JOHN C
• Format: Patent
• Language: Chinese; English
• Published: 16.08.2019
• Subjects: AMMONIA; CHEMISTRY; COMPOUNDS THEREOF; CYANOGEN; INORGANIC CHEMISTRY; METALLURGY

Described is a method for the production and recovery of hydrogen cyanide, which includes removing ammonia from a crude hydrogen cyanide stream. The method integrates heat removed from a crude hydrogen cyanide stream into other areas of the hydrogen cyanide recovery process. The crude hydrogen cyanide stream may be passed through a first waste heat boiler and a second waste heat boiler prior to being fed to an ammonia absorber, which produces a hydrogen cyanide rich stream. Hydrogen cyanide is recovered from the hydrogen cyanide rich stream. Equipment fouling with HCN polymer is reduced. 本发明提供一种使用第二废热锅炉的氰化氢制造方法。具体地，本发明描述了一种用于生产和回收氰化氢的方法，所述方法包括从粗制氰化氢流中去除氨。所述方法将从粗制氰化氢流中去除的热集成到所述氰化氢回收工艺的其它区域中。可以使所述粗制氰化氢流通过第一废热锅炉和第二废热锅炉，之后供给到氨吸收器中，从而产生富含氰化氢的物流。从所述富含氰化氢的物流中回收氰化氢。减少了由HCN聚合物所致的设备结垢。