Dependable pure hydrogen with 99.9% on-stream reliability
Steam reforming of light hydrocarbons, such as natural gas, under a steam atmosphere, is the dominant technology for production of syngas, and thus, of hydrogen. The hydrogen produced by this process requires purification before it is used in downstream processes.
The gas produced by the steam reforming reaction first passes through a shift reactor, where carbon monoxide converts to carbon dioxide and hydrogen. Leaving the shift reactor, the gas contains approximately 75 vol-% hydrogen, together with carbon dioxide, carbon monoxide, and some unconverted methane (plus nitrogen, if this was present in the feed to the steam reformer).
The gas from the shift reactor is sent to the PSA unit that will remove any unconverted methane, together with the carbon monoxide and the carbon dioxide.
The PSA system produces a pure hydrogen product (up to 99.999 vol-%) and a low-pressure gas stream, the tail gas. The tail gas contains all of the impurities present in the feed gas and some of the hydrogen used for regeneration of the adsorbent. This tail gas has a heating value of 1,000 to over 2,000 kcal/Nm3 (106-212 BTU/SCF), depending on the feed gas composition. It is used as fuel gas for the steam reformer furnace where it provides 50 to 90% of the total heat input.
UOP Polybed™ PSA systems are the most reliable way to get the highest purity hydrogen to help you meet new clean fuel regulations and realize more valuable products per barrel of crude oil.
For downstream processing, the high purity hydrogen from PSA units simply provides superior performance and a better bottom line. Even a small percentage increase in the amount of hydrogen recovered in your unit can mean a significant profit increase.
- Proprietary UOP adsorbents enable higher hydrogen recovery and give you more hydrogen per unit of feed, reducing your operating costs.
- More than 99.9% on-stream reliability to help prevent any downtime or lost profits
- Supplied as modular equipment to ensure rapid delivery
- Fixed pricing for accurate forecasting of project expenses
We’ve installed more than 900 PSA systems in over 70 countries, and have revamped over 250 existing PSA units, demonstrating higher capacity and higher recovery.
Pre-commissioning, commissioning, after market debottlenecking, troubleshooting, upgrades and revamp and optimization services are also available.
Contact us for more information.