公开(公告)号：EP2935108A1

公开(公告)日：2015-10-28

申请号：EP13812424.3

申请日：2013-12-12

Applicant: Invista Technologies S.à.r.l.

Inventor： FORSYTH, Stewart ,  RENNER, Martin J. ,  LIU, Aiguo ,  STAHLMAN, Brent J.

IPC: C01C3/02 ,  B01J19/00 ,  B01J19/24

CPC classification number: C01C3/0212 ,  B01J12/007 ,  B01J19/2495 ,  B01J2219/00038 ,  B01J2219/002 ,  B01J2219/00202 ,  B01J2219/00213 ,  B01J2219/0024 ,  C01C3/0216 ,  C01C3/022 ,  Y02P20/132

Abstract: A process for the production of hydrogen cyanide comprises feeding a reaction mixture feed to a plurality of primary reactors each comprising a catalyst bed comprising platinum, wherein the reaction mixture feed comprises gaseous ammonia, methane, and oxygen gas, determining whether a percent yield of hydrogen cyanide in any of the plurality of primary reactors is at or below a threshold, identifying one or more suboptimal reactors amongst the plurality of primary reactors when the percent yield of hydrogen cyanide in any of the plurality of primary reactors is at or below the threshold, and supplementally feeding the reaction mixture feed to one or more supplementary reactors when the one or more suboptimal reactors are identified, wherein each of the one or more supplementary reactors comprises a catalyst bed comprising platinum. The supplemental feeding can be performed in place of the feeding of the reaction mixture feed to the one or more suboptimal reactors or in addition to the feeding of the reaction mixture feed to the one or more suboptimal reactors. The overall process is sufficient to maintain an overall measured hydrogen cyanide production rate amongst the one or more supplementary reactors and the primary reactors that is within a desired overall hydrogen cyanide production rate range.

Abstract translation: 制备氰化氢的方法包括将反应混合物进料加入到包含铂的催化剂床的多个初级反应器中，其中反应混合物进料包括气态氨，甲烷和氧气，确定氢的百分比产率 在多个初级反应器中的任何一个中的氰化物处于或低于阈值时，鉴定多个初级反应器中的任何一个中的氰化氢的百分比产率在阈值以下时，在多个初级反应器中识别一个或多个次优反应器， 以及当鉴定出所述一个或多个次最佳反应器时，将所述反应混合物进料补充进料至一个或多个辅助反应器，其中所述一个或多个辅助反应器中的每一个包括包含铂的催化剂床。 可以进行补充进料，代替将反应混合物进料进料至一个或多个次最佳反应器，或者将反应混合物进料进料至一个或多个次最佳反应器。 总体方法足以在一个或多个辅助反应器和初级反应器中保持在所需的总体氰化氢生产速率范围内的总体测量的氰化氢生产速率。

公开(公告)号：EP2935094A1

公开(公告)日：2015-10-28

申请号：EP13814358.1

申请日：2013-12-12

Applicant: Invista Technologies S.à.r.l.

Inventor： FORSYTH, Stewart ,  RENNER, Martin, J. ,  LIU, Aiguo ,  STAHLMAN, Brent, J.

IPC: C01B3/56 ,  C01C3/02

CPC classification number: B01D53/047 ,  B01D2253/102 ,  B01D2253/106 ,  B01D2253/108 ,  B01D2253/116 ,  B01D2256/16 ,  B01D2257/406 ,  B01D2257/408 ,  C01B3/56 ,  C01B2203/0233 ,  C01B2203/0405 ,  C01B2203/0415 ,  C01B2203/043 ,  C01B2203/0465 ,  C01B2203/0495 ,  C01B2203/1676 ,  C01C3/0212

Abstract: A method and a system for recovering hydrogen from a process for making hydrogen cyanide are described herein. In the method, hydrogen is recovered from a gaseous waste stream of an Andrussow process. The method comprises the following steps: (a) adjusting a reaction mixture comprising methane, ammonia and oxygen to provide the reaction mixture with sufficient oxygen to generate a gaseous waste stream that has at least 40% hydrogen after removal of ammonia and recovery of hydrogen cyanide; and(b) removing components from the gaseous waste stream to generate recovered hydrogen.

公开(公告)号：EP2173800B1

公开(公告)日：2011-04-13

申请号：EP08776100.3

申请日：2008-07-31

Applicant: Invista Technologies S.à.r.l.

Inventor： WHISTON, Keith ,  FORSYTH, Stewart ,  SEDDON, Kenneth, R.

IPC: C08J11/18 ,  C07D201/12

CPC classification number: C08J11/18 ,  C07D201/12 ,  Y02P20/542 ,  Y02W30/706

Abstract: An improved process for the hydrolysis of nylon polymer is herein disclosed using ionic liquids and optionally one equivalent of sulfuric acid per amide residue of the polymer. The process provides for a simplified means for separation of the hydrolyzed polyamide constituent monomers.