公开(公告)号：US20160167975A1

公开(公告)日：2016-06-16

申请号：US14903658

申请日：2014-07-10

Applicant: INVISTA TECHNOLOGIES S.A R.L.

Inventor： John C. CATON ,  John J. OSTERMAIER ,  William J. STEINER

IPC: C01C3/02

CPC classification number: C01C3/0295 ,  C01C1/12 ,  C01C3/04 ,  F22B1/16 ,  Y02P20/129

Abstract: 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.

Abstract translation: 描述了生产和回收氰化氢的方法，其包括从粗氰化氢流中除去氨。 该方法将从粗制氰化氢流中除去的热量与氰化氢回收过程的其它区域相结合。 粗氰化氢料流可以在进料到氨吸收剂之前通过第一废热锅炉和第二废热锅炉，其产生富含氰化氢的料流。 从富氰化氢流中回收氰化氢。 HCN聚合物污垢减少。

公开(公告)号：US20160194211A1

公开(公告)日：2016-07-07

申请号：US14741762

申请日：2013-12-12

Applicant: INVISTA TECHNOLOGIES S.A R.L.

Inventor： John C. CATON ,  John F. GEHRKE ,  Gary L. CARRIER

IPC: C01C3/02

CPC classification number: C01C3/0212 ,  C01C3/022

Abstract: The present invention relates to a system and a process for producing hydrogen cyanide and more particularly, to a process for controlling operational stability of the system and process by blanketing the system with inert gas. More particularly, the present invention relates to the flushing of the system with an inert gas when a crude hydrogen cyanide product exceeds a threshold of oxygen, such as greater than 0.4 vol. % oxygen.

Abstract translation: 本发明涉及一种用于生产氰化氢的系统和方法，更具体地说，涉及通过用惰性气体覆盖该系统来控制该系统和工艺的操作稳定性的方法。 更具体地说，本发明涉及当粗制氰化氢产物超过氧气阈值（例如大于0.4体积％）时用惰性气体冲洗该系统。 ％氧气。