公开(公告)号：US20250132363A1

公开(公告)日：2025-04-24

申请号：US18918230

申请日：2024-10-17

Applicant: EXXONMOBIL TECHNOLOGY AND ENGINEERING COMPANY

Inventor： Anastasios I. Skoulidas ,  Gregory R. Johnson ,  Clay R. Sutton ,  Lu Han

IPC: H01M8/0612 ,  H01M8/04014 ,  H01M8/04089 ,  H01M8/04701 ,  H01M8/04746 ,  H01M8/14

Abstract: Systems and methods are provided for operating molten carbonate fuel cells to produce increased amounts of H2 in the anode effluent while still maintaining operation of the cell within conventional operation boundaries, such as having a temperature differential between the cathode input flow and the cathode effluent of 35° C. or more, with the cathode effluent being hotter than the cathode input flow. This temperature differential between the cathode input flow and the cathode effluent while still producing excess hydrogen is achieved in part by a) passing an input flow containing hydrocarbons and/or reformable fuel into an external reformer, b) reforming 20 vol % or more of the hydrocarbons and/or reformable fuel in the external reformer prior to c) passing the partially reformed input flow into a fuel cell or fuel cell stack where additional reforming is performed in the anode(s) and/or in a reforming element in the fuel cell stack.

公开(公告)号：US12126063B2

公开(公告)日：2024-10-22

申请号：US16738519

申请日：2020-01-09

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Gregory R. Johnson

IPC: H01M8/04791 ,  F02C6/00 ,  H01M8/0668 ,  H01M8/14

CPC classification number: H01M8/04805 ,  H01M8/0668 ,  H01M2008/147 ,  H01M2250/402 ,  H01M2250/405

Abstract: Systems and methods are provided for integrating a chemical looping combustion system with molten carbonate fuel cells to provide improved operation of the molten carbonate fuel cells when using the exhaust from a gas turbine or other electrical power generation device as the CO2 source for the MCFC cathodes. This integration can be accomplished by using metal oxide in the chemical looping combustion system to oxidize the anode output flow from the MCFCs. This can reduce or minimize the number of separations that need to be performed in order to process the concentrated CO2 present within the anode exhaust. By reducing, minimizing, or eliminating the CO and H2 in the anode exhaust, the need to perform more costly separations (such as cryogenic separation or amine washing) to obtain a high purity CO2 product stream can be reduced or minimized. Optionally, the cathode exhaust from the molten carbonate fuel cells can be used as an oxygen-containing stream for regeneration of the metal oxide.

公开(公告)号：US11945736B2

公开(公告)日：2024-04-02

申请号：US17168112

申请日：2021-02-04

Applicant: ExxonMobil Technology and Engineering Company

Inventor： Gregory R. Johnson ,  Everett J. O'Neal ,  Sarah E. Feicht

IPC: C02F1/00 ,  B01D53/32 ,  B01D61/42 ,  B01D61/46 ,  C02F1/461

CPC classification number: C02F1/46109 ,  B01D53/326 ,  B01D61/423 ,  B01D61/461 ,  B01D2257/504 ,  B01D2313/08 ,  B01D2313/26 ,  C02F2001/46166 ,  C02F2201/46135 ,  C02F2209/06

Abstract: The present disclosure relates to methods and systems for algae cultivation including the integration of electrochemical carbonate production for enhancing algae growth. More particularly, the present disclosure relates to methods and systems for producing a sodium hydroxide from brine using an electrochemical cell, contacting the sodium hydroxide stream with a CO2 gas sweep and producing a carbonate stream, and cultivating an algae slurry in a cultivation vessel comprising at least a portion of the carbonate stream.