Cotting Industries offers complete Hydrogen Gas Production Plants using its patented Double-Tube® reformer for hydrogen generation and Pressure Swing Adsorption for hydrogen purification. Double-Tube® reformers may be purchased separately.
Hydro-Mini® Hydrogen Gas Production Plants
Benefits. The Hydro-Mini® is a pre-engineered hydrogen plant product line that achieves superior economic performance by combining proven process technology with innovative component design and modular plant packaging. The Hydro-Mini® allows hydrogen gas to be produced more reliably and cost effectively than with a traditional custom designed small-scale hydrogen plant by:
- reducing capital investment by at least 48%;
- lowering operating cost by 8% before depreciation charges and by at least 17% including depreciation charges;
- operating efficiently across a wide production range;
- setting new standards for safety and reliability;
- simplifying plant installation and operation;
- enabling low cost relocation to new sites; and
- providing for fully automated startup/shutdown, unattended operation and remote plant monitoring.
Additionally, the Hydro-Mini®:
- eliminates availability concerns of liquid hydrogen;
- provides an uninterrupted supply of hydrogen in regions with limited distribution infrastructure; and
- provides long-term hydrogen cost stability.
Specifications. The Hydro-Mini® product line consists of three plants with nominal capacities of 3,750 scfh, 7,500 scfh and 15,000 scfh. The specifications for the plants are provided in the following documents:
Process Description. The process flow begins with a hydrocarbon feed gas entering the plant where it is preheated and sulfur compounds are removed via zinc oxide desulfurization. The sulfur free gas is mixed with saturated steam and further preheated before entering the reformer.
In the reformer, the steam/hydrocarbon mixture is converted to hydrogen and carbon monoxide at high temperature in the presence of a solid catalyst.
The hot reformed gas from the reformer is quenched with water and passed through the high temperature shift converter where steam and carbon monoxide are converted to additional hydrogen and carbon dioxide.
The process gas is cooled and then purified in the pressure swing adsorption system. Waste gas from the pressure swing adsorption system is burned as fuel in the reformer. The hot flue gas from the reformer is used to generate the steam required by the process and additional steam for export.
Patented Double-Tube® Reformer
The Hydro-Mini® product line uses our proprietary Double-Tube® reformer for hydrogen generation. The Double-Tube® reformer is a novel design that combines high reliability and high thermal efficiency. This unique steam-hydrocarbon reformer is a compact furnace enclosure ideally suited for hydrogen production in the range 1,875 - 15,000 scfh.
The reformer contains a single reaction tube fired on two sides from the bottom. The furnace enclosure is wide at the bottom to accommodate the burners and tapered at a height several feet above the length of the flames to a narrow upper section. The reaction tube consists of an annular portion filled with catalyst and a center return tube. The reaction tube is supported from the bottom and allowed to thermally expand upward through the use of a counterweight system attached at the top of the tube.
The combination of the furnace enclosure geometry and the reaction tube with a center return tube results in an even temperature profile over the length of the reaction tube and a high thermal efficiency in the furnace.
For more information, contact us.
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