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1. 发明申请

US20230070799A1 OXYGEN TRANSPORT MEMBRANE REACTORS FOR DECARBONIZATION 有权
公开(公告)号：US20230070799A1
公开(公告)日：2023-03-09
申请号：US17790161
申请日：2020-12-18
申请人： PRAXAIR TECHNOLOGY, INC.
发明人： Sean M. Kelly , Sadashiv M. Swami , Maulik R. Shelat , Ines C. Stuckert , Steven M. Brown , Shrikar Chakravarti , Juan Li , Digna Vora
IPC分类号： C01B3/38 , C01B3/48 , C01B13/02
摘要： A method and system for decarbonization of a hydrocarbon conversion process such as steam methane reforming process for hydrogen production utilizing oxygen transport membrane reactors. The system employs catalyst-containing reforming reactors for converting natural gas into synthesis gas which is further treated in high temperature or medium temperature water gas shift reactors and fed to a hydrogen PSA to produce hydrogen product. The system further employs oxygen transport membrane reactors thermally coupled to reforming reactors and configured to oxy-combust about 90% to about 95% of combustibles in PSA tail gas that may be optionally mixed with natural gas. The oxy-combustion product stream leaving the oxygen transport membrane reactors contains about 90% of the carbon provided to the feed of the reforming reactor. The carbon dioxide in the oxy-combustion product stream can be recovered and further purified for utilization or geologic storage or liquefied to form a liquid carbon dioxide product.

2. 发明申请

US20200048088A1 METHOD AND SYSTEM FOR PRODUCING HYDROGEN USING AN OXYGEN TRANSPORT MEMBRANE BASED REFORMING SYSTEM 审中-公开
公开(公告)号：US20200048088A1
公开(公告)日：2020-02-13
申请号：US16492635
申请日：2018-03-12
申请人： PRAXAIR TECHNOLOGY, INC.
发明人： Shrikar Chakravarti , Ines C. Stuckert
IPC分类号： C01B3/48 , C01B3/38 , C01B3/56 , B01D53/22 , B01D53/047 , C01B13/02
摘要： A method and system for producing hydrogen using an oxygen transport membrane based reforming system is disclosed. The system of the invention comprises at least two reactors in the form of sets of catalyst containing tubes: a first set of tubes comprising at least one reforming catalyst containing reforming reactor configured to produce a synthesis gas stream, and a second set of tubes comprising a reactively driven and catalyst containing oxygen transport membrane reactor configured to generate and radiate heat to the reforming reactor. The synthesis gas product is further treated in a separate high temperature water gas shift reactor and optionally in a separate low temperature water gas shift reactor. Hydrogen is produced from the resulting hydrogen-enriched gas using hydrogen PSA. A distinctive feature of this OTM configuration is that no portion of the syngas is fed to the OTM reactor, which allows reforming to be conducted in the reforming reactors at much higher pressures. The synthesis gas stream is directed to the water gas shift (WGS) reactor where H2/CO ratio increases from about 4.7 to about 21. Since the WGS reaction is exothermic, the shifted syngas leaves the reactor at a higher temperature, typically about 410° C. This shifted syngas is used to heat the NG feedstock in the NG heater to about 370° C., and then used to preheat boiler feed water (BFW). Syngas leaving the BFW heater is at about 175° C. It is cooled down to about 40° C. in a syngas cooler fed by cooling water. The cooled syngas then enters a knock-out drum where water is removed from the bottoms as process condensate and recycled for use within the process.

3. 发明授权

US11136238B2 OTM syngas panel with gas heated reformer 有权
公开(公告)号：US11136238B2
公开(公告)日：2021-10-05
申请号：US17055194
申请日：2019-05-15
申请人： PRAXAIR TECHNOLOGY, INC.
发明人： Sean M. Kelly , Ines C. Stuckert
IPC分类号： C01B13/02 , C01B3/38 , B01J19/24 , B01J23/46 , B01J23/755
摘要： The present invention generally relates to an oxygen transport membrane syngas panel whereby the reformer layer of the panel is eliminated, and the primary reforming function is integrated into the manifold as a gas heated reformer with product syngas as the source of heat.

4. 发明申请

US20210221681A1 OTM SYNGAS PANEL WITH GAS HEATED REFORMER 有权
公开(公告)号：US20210221681A1
公开(公告)日：2021-07-22
申请号：US17055194
申请日：2019-05-15
申请人： PRAXAIR TECHNOLOGY, INC.
发明人： Sean M. Kelly , Ines C. Stuckert
IPC分类号： C01B13/02 , C01B3/38
摘要： The present invention generally relates to an oxygen transport membrane syngas panel whereby the reformer layer of the panel is eliminated, and the primary reforming function is integrated into the manifold as a gas heated reformer with product syngas as the source of heat.

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