Integration Of Hydrogen-Rich Fuel-Gas Production With Olefins Production Plant
Patent No. EP4277875 (titled "Integration Of Hydrogen-Rich Fuel-Gas Production With Olefins Production Plant") was filed by Exxonmobil Chemical Patents on Aug 22, 2022. The application was issued on Aug 6, 2025.
Patent Summary
A process for producing $\text{H}_2$-rich fuel gas involves supplying hydrocarbon and steam feeds to a reforming reactor with a catalyst to produce a reformed stream of $\text{H}_2$, $\text{CO}$, and steam. This stream is cooled via a waste heat recovery unit (WHRU) to generate high-pressure steam. The resulting cooled stream undergoes two sequential shifting stages—each comprising a shift reactor with a specific catalyst and shifting conditions, separated by a cooling step—to progressively increase $\text{CO}_2$ and decrease $\text{CO}$ concentrations. After abating steam, the crude gas mixture of $\text{CO}_2$ and $\text{H}_2$ is processed to recover $\text{CO}_2$, yielding an $\text{H}_2$-rich stream ($\ge 80\text{ mol\% } \text{H}_2$). A portion of this stream is supplied to a steam cracker in an olefins production plant as fuel gas for thermal energy.
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Date
Description
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EP4277875
- Application Number
- EP22769519A
- Filing Date
- Aug 22, 2022
- Status
- Granted And Under Opposition
- Jul 4, 2025
- Publication Date
- Aug 6, 2025
- External Links
- Slate, Register , Google Patents