公开(公告)号：US20160046498A1

公开(公告)日：2016-02-18

申请号：US14742134

申请日：2013-12-12

Applicant: INVISTA TECHNOLOGIES S.A.R.L.

Inventor： John C. CATON ,  Brent J. STAHLMAN ,  Rocky WANG

IPC: C01C3/02

CPC classification number: C01C3/0212 ,  C01C3/022 ,  F28D7/16 ,  F28D2021/0022 ,  F28F19/002 ,  Y02P20/129

Abstract: The present invention relates to an improved process for producing hydrogen cyanide involving a heat exchanger comprising a plurality of tubes, wherein each of the plurality of tubes comprises a ceramic ferrule extending through the entrance of the tube, each ferrule comprising an insulation layer surrounding at least a portion of the ferrule, and one or more washers, wherein at least one of the one or more washers surrounds the ferrule above the entrance of the tube, wherein the ceramic ferrule is spaced apart from the tube. It further relates to a reaction apparatus for producing hydrogen cyanide involving a heat exchanger comprising a plurality of tubes, wherein each of the plurality of tubes comprises a ceramic ferrule extending through the entrance of the tube, each ferrule comprising an insulation layer surrounding at least a portion of the ferrule, and one or more washers, wherein at least one of the one or more washers surrounds the ferrule above the entrance of the tube, wherein the ceramic ferrule is spaced apart from the tube. It further relates to the heat exchanger for use in this improved process and reaction apparatus.

Abstract translation: 本发明涉及一种生产氰化氢的改进方法，该方法涉及包括多个管的热交换器，其中多个管中的每个管包括延伸穿过管的入口的陶瓷套圈，每个套圈包括至少包围绝缘层 所述套圈的一部分和一个或多个垫圈，其中所述一个或多个垫圈中的至少一个围绕所述管的入口上方的所述套圈，其中所述陶瓷套圈与所述管间隔开。 本发明还涉及一种用于生产含有多个管的热交换器的氰化氢的反应装置，其中多个管中的每个管包括延伸穿过管的入口的陶瓷套圈，每个套圈包括至少一个 所述套圈的一部分以及一个或多个垫圈，其中所述一个或多个垫圈中的至少一个围绕所述管的入口上方的所述套圈，其中所述陶瓷套圈与所述管间隔开。 它还涉及用于该改进的方法和反应装置的热交换器。

公开(公告)号：US20150360965A1

公开(公告)日：2015-12-17

申请号：US14741978

申请日：2013-12-12

Applicant: INVISTA TECHNOLOGIES S.A.R.L. ,  INVISTA NORTH AMERICA S.A.R.L.

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

IPC: C01C3/02 ,  B01D53/26

CPC classification number: C01C3/0212 ,  B01D53/26 ,  C01C3/022

Abstract: The system and methods described herein solve problems of inaccurate flow control, loss of optimum reactant gas feed ratios, and the associated inefficiencies brought on by variable humidity in reactant feedstream gases during production of hydrogen cyanide by an Andrussow process.

Abstract translation: 本文所述的系统和方法解决了通过安德鲁斯（Andrussow）工艺生产氰化氢期间反应物进料流气体中由不可变湿度引起的流量控制不正确，最佳反应气体进料比的损失以及相关的无效率问题。

公开(公告)号：US20160046497A1

公开(公告)日：2016-02-18

申请号：US14742050

申请日：2013-12-12

Applicant: INVISTA NORTH AMERICA S.A R.L. ,  INVISTA TECHNOLOGIES S.A.R.L.

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

IPC: C01C3/02

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: 一种生产氰化氢的方法包括将反应混合物进料加入至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反应器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处于或低于阈值时，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优反应器时，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含有铂的催化剂床。 可以进行补充进料，代替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。 整个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：US20160046499A1

公开(公告)日：2016-02-18

申请号：US14741927

申请日：2013-12-12

Applicant: INVISTA NORTH AMERICA S.A.R.L. ,  INVISTA TECHNOLOGIES S.A.R.L.

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

IPC: C01C3/02

CPC classification number: C01C3/0216 ,  C01C3/0212 ,  C01C3/022

Abstract: Processes and systems for the production of hydrogen cyanide via the Andrussow process are described. A reaction zone, wherein oxygen, ammonia, and methane can be allowed to react in the presence of a catalyst comprising platinum to provide hydrogen cyanide. A desulfurization zone, wherein a feed stream comprising sulfur and at least one of the oxygen, the ammonia, and the methane can be contacted with a desulfurization material to produce a sulfur-reduced feed stream that is provided to the reaction zone. In an example, the desulfurization material includes zinc oxide.

Abstract translation: 描述了通过Andrussow方法生产氰化氢的方法和系统。 反应区，其中氧气，氨和甲烷可以在包含铂的催化剂的存在下反应以提供氰化氢。 脱硫区，其中包含硫和至少一种氧，氨和甲烷的进料流可与脱硫材料接触，以产生提供给反应区的减硫进料流。 在一个实例中，脱硫材料包括氧化锌。