Methods and systems for power-to-fuel applications using tail gas from fuel synthesis and / or methane in high temperature electrolyzer
Recycling tail gas and methane-rich streams in a high-temperature SOEC for syngas production addresses inefficiencies in conventional Power-to-X processes, enhancing energy efficiency and CO2 utilization for chemical and fuel synthesis.
WO2026024811A1 Publication Date: 2026-01-29CHEVRON USA INC
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Patent Information
- Application Number
- PCT/US2025/038809
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-07-24
- Filing Date
- 2025-07-23
- Publication Date
- 2026-01-29
AI Technical Summary
Technical Problem
Conventional Power-to-X processes face challenges in efficiently utilizing tail gas from fuel synthesis, which is less valuable and difficult to transport, leading to reduced CO2 utilization rates and increased energy consumption.
Method used
Recycle tail gas and methane-rich streams to a high-temperature solid-oxide electrolyzer (SOEC) for syngas production, integrating steam methane reforming to enhance energy efficiency and CO2 utilization, producing syngas for downstream chemical or fuel synthesis.
Benefits of technology
Improves overall energy efficiency and CO2 utilization by reducing electrolyzer electricity consumption and maximizing heat use, allowing for the production of valuable chemical and fuel products.
✦ Generated by Eureka AI based on patent content.
Abstract
A continuous method includes passing a first steam feed stream and one or more of a recycled tail gas stream and a methane-rich feed stream to a cathode of a first electrolyzer containing the cathode, an anode and an electrolyte inserted between the cathode and the anode, thereby producing a cathode effluent including syngas, and passing the cathode effluent including syngas to a reactor unit, thereby producing a chemical product or a fuel-based product.
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