Method and system for the provision of a hydrogen stream
CA3322323A1Pending Publication Date: 2026-09-21GASCONTEC
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Patent Information
- Application Number
- CA3322323
- Authority / Receiving Office
- CA · CA
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2024-02-28
- Filing Date
- 2025-02-26
- Publication Date
- 2026-09-21
AI Technical Summary
Technical Problem
Existing methods for producing hydrogen result in significant carbon dioxide emissions due to the use of steam reforming and inefficient CO2 scrubbing, particularly in the production of synthesis gas for subsequent hydrogen processes.
Method used
Increasing the molar steam-to-carbon ratio (S/C) in autothermal reforming by using process condensate preheated with waste heat, combined with multiple-stage water-gas shift reactions and optimized separation processes to reduce methane slip and enhance CO2 scrubbing efficiency.
Benefits of technology
Reduces CO2 emissions by up to two-thirds and minimizes the need for additional steam generation, while ensuring sufficient hydrogen production for ammonia synthesis without additional natural gas combustion.
✦ Generated by Eureka AI based on patent content.
Abstract
The invention relates to a method for the provision of a hydrogen stream (7) in a system (2) for the provision of the hydrogen stream (7), wherein a carbon-containing energy carrier stream (3) is delivered to a synthesis gas reactor arrangement (4) for obtaining a synthesis gas stream (5) with hydrogen and carbon oxides, wherein the synthesis gas reactor arrangement (4) obtains the synthesis gas stream (5) from the energy carrier stream (3) through an autothermal reforming, wherein the synthesis gas stream (5) is delivered to a shift device (15a-c), wherein in the shift device (15a-c) a water-gas shift reaction takes place for the conversion at least of a part of the carbon monoxide of the synthesis gas stream (5) with steam of the synthesis gas stream (5) into carbon dioxide and hydrogen, wherein the synthesis gas stream (5) process-wise downstream of the shift device (15a-c) is delivered to a carbon dioxide wash (30) for washing out at least a part of the carbon dioxide from the synthesis gas stream (5), wherein a flash gas stream is released from a regeneration stage of the carbon dioxide wash (30), which flash gas stream is delivered to a heating arrangement of the system (2) for underfiring, wherein the synthesis gas stream (5) process-wise downstream of the carbon dioxide wash (30) is delivered at least partially to a separation arrangement (6) for separating the synthesis gas stream (5) at least into a hydrogen stream (7) with hydrogen and into an exhaust gas stream (8) comprising carbon oxides. The method is characterized in that the energy carrier stream (3), before delivery to the synthesis gas reactor arrangement (4), is delivered to a saturation stage (11), in which saturation stage (11) pre-heated condensate (12), which has occurred in the system (2), is delivered to the energy carrier stream (3), and that a steam portion of the synthesis gas stream (5), on delivery to the shift device (15a-c) is already present at at least 80 % on exit of the synthesis gas stream (5) from the synthesis gas reactor arrangement (4). The invention also relates to a corresponding system (2) for the provision of a hydrogen stream (7).
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