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1. 发明授权

US10913048B2 Pressure-regulated multi-reactor system 有权
公开(公告)号：US10913048B2
公开(公告)日：2021-02-09
申请号：US14389133
申请日：2013-03-19
申请人： AUROTEC GMBH
发明人： Stefan Zikeli , Friedrich Ecker
IPC分类号： B01J3/00 , B01J19/24 , B01J19/32 , C01C3/02
摘要： A device and a method are provided for reacting a starting material in at least two reactors connected to each other, including the reacting of the starting material in a first reactor to a first product, removing the first product from the first reactor using a jet pump, wherein a negative pressure zone of the jet pump is operationally connected to the first reactor, so that the first product of the first reactor moves through the negative pressure zone in a propulsion jet of a propulsion medium of the jet pump, conducting the propulsion medium having the first product into a second reactor, wherein the first product is allowed to react into a second product, separating the second product from the propulsion medium and discharging the separated second product.

2. 发明授权

US10865118B2 Installation and process for the preparation of hydrogen cyanide 有权
公开(公告)号：US10865118B2
公开(公告)日：2020-12-15
申请号：US15938606
申请日：2018-03-28
申请人： Arkema France
发明人： Yves Bernardin , Xavier Marcarian , Romain Billon
IPC分类号： C01C3/02 , B01J4/02 , B01J12/00 , B01J19/00 , B01J4/00 , C07C51/06 , C07C67/20 , C07C231/06 , C07C231/12 , C07C253/04
CPC分类号： C01C3/0212 , B01J4/008 , B01J4/02 , B01J12/00 , B01J19/0006 , C01C3/022 , C07C51/06 , C07C67/20 , C07C231/06 , C07C231/12 , C07C253/04 , B01J2219/00186 , B01J2219/00211 , B01J2219/00225 , Y02P20/129
摘要： Present invention relates to a process and an installation (100) for the preparation of hydrogen cyanide by the Andrussow process, and more precisely for improving the conditions of mixing the reactant gases before feeding the Andrussow type reactor (60), in order to improve safety, to avoid any risk of explosion and to produce HCN in safe and efficient manner. The installation is configured in such a manner that oxygen is pre-mixed with air with a ratio comprised between 20.95% and 32.5% by volume, preferably between 25% and 30.5% by volume; methane containing gas and ammonia are simultaneously added in the pre-mixture of oxygen-enriched air in such a manner that the volumic ratio of methane to ammonia is comprised between 1.35 and 1.02 depending on the content of oxygen into air; said obtained reactant gases mixture having a temperature comprised between 80° C. and 120° C., preferably between 95° C. and 115° C. for feeding the Andrussow type reactor (60).

3. 发明申请

US20200299144A1 PROCESS FOR THE PREPARATION OF SODIUM CYANIDE 审中-公开
公开(公告)号：US20200299144A1
公开(公告)日：2020-09-24
申请号：US16898281
申请日：2020-06-10
申请人： CyPlus GmbH
发明人： Jens Henkel , Jürgen Rassbach , Klaus Trenkmann
IPC分类号： C01C3/10 , C01C3/02 , B01D9/00 , B01D21/26 , B01D53/14 , B01D53/96
摘要： The invention relates to a process for the preparation of alkali metal cyanides as a solid substance, comprising the steps of: i) an absorption step in the form of an absorption of hydrogen cyanide from a hydrogen cyanide-containing synthesis gas in an aqueous alkali metal hydroxide solution; ii) a crystallization step in the form of introducing said alkali metal cyanide solution into an evaporative crystallizer; iii) a separation step; iv) a recycle step; v) a drying step.

4. 发明授权

US10647663B2 High purity HCN from acrylonitrile co-production 有权
公开(公告)号：US10647663B2
公开(公告)日：2020-05-12
申请号：US15745166
申请日：2016-07-22
申请人： INVISTA NORTH AMERICA S.A.R.L.
发明人： Benjamin D. Herzog , Milind V. Kantak
IPC分类号： C07C253/34 , C01C1/245 , C01C1/28 , C01C3/02
摘要： Disclosed is a process for co-manufacture of ACRN and HCN with improved HCN selectivity and reduced solids formation in a shared product recovery section.

5. 发明申请

US20180194640A1 METHOD FOR REMOVING NITRILES FROM HYDROGEN CYANIDE 审中-公开
公开(公告)号：US20180194640A1
公开(公告)日：2018-07-12
申请号：US15742320
申请日：2016-07-12
申请人： THE CHEMOURS COMPANY FC, LLC
发明人： WILLIAM DAVID PARTEN , RANDALL O. DIXON , MONIQUE BOWFORD , GARY R. MAXWELL , STEVEN LAMAR GRISE
IPC分类号： C01C3/02 , B01D3/38
CPC分类号： C01C3/0295 , B01D3/38 , C01C3/0208 , C01C3/0212 , C01C3/0216
摘要： Process for making purified hydrogen cyanide. The process includes feeding a reaction product including HCN, water, and organonitriles to a separation vessel; taking a liquid slip stream of HCN, water and organonitriles from the separation vessel; and feeding the liquid slipstream into a sidestream stripper to purge nitriles from the HCN reaction product.

6. 发明授权

US09809530B2 Method for producing alpha-hydroxy carboxylic esters in the gas phase 有权
公开(公告)号：US09809530B2
公开(公告)日：2017-11-07
申请号：US15323888
申请日：2015-07-23
申请人： Steffen Krill , Belaid Ait Aissa , Alexander May , Matthias Groemping
发明人： Steffen Krill , Belaid Ait Aissa , Alexander May , Matthias Groemping
IPC分类号： C07C67/20 , B01J21/06 , C01C1/08 , C01C3/02
CPC分类号： C07C67/20 , B01J21/066 , C01C1/08 , C01C3/02 , C07C69/675
摘要： The present invention relates to a process for preparing alpha-hydroxycarboxylic esters from the alcoholysis of alpha-hydroxycarboxamides in the gas phase, characterized in that the conversion is effected in the presence of water.

7. 发明申请

US20170225152A1 ACTIVATION ENERGY REDUCERS FOR CATALYTIC OXIDATION OF GASEOUS MIXTURES 审中-公开
公开(公告)号：US20170225152A1
公开(公告)日：2017-08-10
申请号：US15407278
申请日：2017-01-17
申请人： Rohm and Haas Company
发明人： Jon Busick , Philippe P. Maillot , Joy L. Mendoza
IPC分类号： B01J23/46 , B01J35/06 , C01C3/02
CPC分类号： B01J23/464 , B01J35/06 , C01C3/0216
摘要： The present invention provides materials for improving the ignition of gaseous reactants in metal catalyzed oxidation reactions comprising a metal catalyst gauze, preferably, a platinum/rhodium catalyst gauze, having in contact therewith, from 0.25 to 1.5 wt. %, based on the weight of the metal catalyst gauze, of one or more pieces of previously used metal catalyst gauze. Further, methods of making the metal catalyst materials comprise shaping the pieces of previously used metal catalyst gauze and placing them equidistant from each other in contact with or on the surface of the metal catalyst gauze. And methods of using the materials comprise feeding into the reactor a gas mixture of oxygen or air and one or more reactant gases, and igniting the gas mixture at the surface of one or more or all of the pieces of previously used metal catalyst.

8. 发明申请

US20160200586A1 REDUCTION OF ORGANONITRILE IMPURITY LEVELS IN HCN FROM AN OXYGEN ANDRUSSOW PROCESS 审中-公开
标题翻译：从氧气和硫酸过程中减少HCN中的有机物污染物浓度
公开(公告)号：US20160200586A1
公开(公告)日：2016-07-14
申请号：US14741952
申请日：2013-12-12
申请人： Stewart FORSYTH , Aiguo LIU , Martin J. RENNER , Brent J. STAHLMAN
发明人： Stewart FORSYTH , Aiguo LIU , Martin J. RENNER , Brent J. STAHLMAN
IPC分类号： C01C3/02
CPC分类号： C01C3/0212
摘要： The invention provides an oxygen Andrussow process for production of hydrogen cyanide from a methane-containing feedstock such as natural gas in the presence of oxygen and ammonia over a platinum catalyst, wherein the production of byproduct organonitrile impurities, such as acrylonitrile, is reduced. Limiting the content of C2 hydrocarbons in the methane feedstock in the oxygen Andrussow process, in contrast to the air Andrussow process, has been found to reduce formation of organonitriles, such as acrylonitrile. The organonitrile impurities can require additional processing for removal cause fouling of equipment, and can also contribute to hydrogen cyanide polymerization. Reduction of C2+ hydrocarbon levels to less than 2 wt %, or 1 wt %, or less than 0.1 wt %, in the methane can provide an improved yield of higher purity HCN. Reduction of C2+ hydrocarbon levels also solves the problem of polymer buildup in process equipment, reducing downtime required for cleaning when higher C2+ hydrocarbon levels are present in the reaction feed.
摘要翻译：本发明提供了一种用于在铂催化剂上在氧和氨存在下从含甲烷的原料例如天然气生产氰化氢的氧气Andrussow方法，其中副产物有机腈杂质如丙烯腈的生产减少。已经发现，与空气Andrussow方法相反，限制了氧气Andrussow方法中甲烷原料中的C2烃的含量，以减少有机腈如丙烯腈的形成。有机腈杂质可能需要额外的处理以除去设备的结垢，也可能导致氰化氢聚合。在甲烷中将C2 +烃水平降低至小于2重量％，或1重量％或小于0.1重量％可提供更高纯度HCN的提高的产率。降低C2 +烃水平也解决了工艺设备中聚合物积聚的问题，减少反应进料中较高的C2 +烃含量时清洗所需的停机时间。

9. 发明申请

US20160167975A1 HYDROGEN CYANIDE MANUFACTURING PROCESS WITH SECOND WASTE HEAT BOILER 审中-公开
标题翻译：具有第二废热锅炉的氢化氰化物制造工艺
公开(公告)号：US20160167975A1
公开(公告)日：2016-06-16
申请号：US14903658
申请日：2014-07-10
申请人： INVISTA TECHNOLOGIES S.A R.L.
发明人： John C. CATON , John J. OSTERMAIER , William J. STEINER
IPC分类号： C01C3/02
CPC分类号： C01C3/0295 , C01C1/12 , C01C3/04 , F22B1/16 , Y02P20/129
摘要： 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.
摘要翻译：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。

10. 发明申请

US20160152484A1 REACTOR FOR PREPARING HYDROGEN CYANIDE BY THE ANDRUSSOW PROCESS, EQUIPMENT COMPRISING SAID REACTOR AND PROCESS USING SUCH AN EQUIPMENT 审中-公开
标题翻译：通过安德鲁斯过程制备氢氰化物的反应器，包含该反应器的设备和使用这种设备的方法
公开(公告)号：US20160152484A1
公开(公告)日：2016-06-02
申请号：US14905462
申请日：2014-07-18
申请人： ARKEMA FRANCE
发明人： Yves BERNARDIN , Xavier MARCARIAN , Romain BILLON
IPC分类号： C01C3/02 , B01J8/02
CPC分类号： C01C3/0225 , B01J4/001 , B01J8/02 , B01J8/025 , B01J8/0278 , B01J8/0285 , B01J12/007 , B01J19/2495 , B01J2208/00212 , B01J2208/00539 , B01J2208/00884 , B01J2219/00033 , B01J2219/00094 , B01J2219/00263 , B01J2219/00265 , B01J2219/0027 , B01J2219/0286 , B01J2219/1946 , C01C3/0212
摘要： The present invention relates to a reactor (201) for preparing hydrogen cyanide by the Andrussow process, to an equipment (200) comprising said reactor and to a process for preparing hydrogen cyanide by the Andrussow process. The reactor (201) comprising at least one gas inlet (I) for reactant gases mixture, a catalyst (203), a porous support for the catalyst (204), a porous sub support (205, 206) and at least one outlet (P8) for the reaction products. According to the invention, said reactor has a cone frustum shaped metallic casing (210) and comprises inside the metallic casing, a gas distributor (202) located between the gas inlet and the catalyst, said distributor comprising at least one cone frustum element (D1, . . . Dn) having an upper base directed towards the gas inlet (I).
摘要翻译：本发明涉及一种用于通过Andrussow方法制备氰化氢的反应器（201），其包括所述反应器的设备（200）和通过Andrussow方法制备氰化氢的方法。反应器（201）包括用于反应气体混合物的至少一个气体入口（I），催化剂（203），用于催化剂（204）的多孔载体，多孔子载体（205,206）和至少一个出口 P8）作为反应产物。根据本发明，所述反应器具有圆锥截头锥形的金属外壳（210），并且在金属外壳内部包括位于气体入口和催化剂之间的气体分配器（202），所述分配器包括至少一个锥形截头锥体元件（D1 ，... Dn），其具有朝向气体入口（I）的上部基座。

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