Processes and apparatuses for controlling a temperature of a reactor

By recycling oxygen-depleted streams and using adsorbent vessels to control temperature and remove water, the process addresses high oxygen and water concentrations in hydrogen production, ensuring stable reactor operation and catalyst longevity.

WO2026089996A1PCT designated stage Publication Date: 2026-04-30UOP LLC
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Patent Information

Application Number
PCT/US2025/051439
Authority / Receiving Office
WO · WO
Patent Type
Applications
Current Assignee / Owner
Priority Date
2024-10-23
Filing Date
2025-10-17
Publication Date
2026-04-30

AI Technical Summary

Technical Problem

The production of hydrogen using water electrolysis results in high oxygen and water concentrations that are not tolerated by many applications, leading to increased reactor temperatures, catalyst degradation, and safety risks, particularly during fluctuations in electricity supply.

Method used

A process involving the recycling of an oxygen-depleted or oxygen-free stream from the process to upstream locations where oxygen reacts with hydrogen, combined with water removal using adsorbent vessels and temperature control mechanisms to mitigate exothermic reactions.

Benefits of technology

This approach effectively reduces reactor exotherms, prolongs catalyst life, and ensures safe operation by maintaining hydrogen purity and temperature stability.

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Abstract

Processes and apparatuses for controlling a temperature of a reactor. Oxygen and hydrogen are reacted in a reactor which contains a catalyst configured to catalyze a reaction between oxygen and hydrogen and produce an effluent comprising water. Water is removed from the effluent in a separation zone having a plurality of vessels containing an adsorbent configured to adsorb water and provide a purified product stream, the purified product stream comprises oxygen or hydrogen. An exotherm of the reactor is controlled by recycling a recycled stream which comprises a portion of the effluent stream or a portion of the purified product stream.
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Citation Information

Patent Citations

  • Configurations and Methods for Effluent Gas Treatment

    US20090004070A1

  • Method and system of recovering energy from a fluid catalytic cracking unit for overall carbon dioxide reduction

    US20090158661A1

  • Reactors and systems for oxidative coupling of methane

    US20180305274A1

  • Process for removing oxygen from a hydrogen stream

    US20210309517A1

  • Integrated sulfur recovery and hydrogen production process

    US20230339753A1