Pre-reforming is the process by which methane and heavier hydrocarbons are steam reformed and the products of the heavier hydrocarbon reforming are methanated. The adiabatic pre-reformer is usually positioned upstream of the main steam reformer and uses a high nickel catalyst. Advantages of adopting a pre-reformer in a new plant design include being able to reduce the size of the conventional steam reformer furnace, which is the most expensive capital expense item on the plant, and reduced operating costs due to savings in fuel consumption. It also provides feedstock flexibility by having one catalyst type that can handle multiple feeds including natural gas, ROG, LPG and naphtha. A pre-reformer is also often considered as a revamp option for existing plants when the objective is to uprate the capacity or improve the energy efficiency of the plant.
Johnson Matthey has a long legacy in pre-reforming catalysts dating back to the 1960s, and offers DAVY™ CRG technology and series of catalysts. Typical CRG applications in today's market place include pre-reforming, catalytic derichment (CDR) and Towns Gas installations. Other associated markets include methanation, SNG, GTL and gasification. Our CRG technology offers increased plant efficiencies, feed flexibility, plant uprates and capital savings. Our CRG catalysts give long lives as a result of their high activity, resistance to carbon formation and poisoning, low sintering and low stable pressure drop.
Johnson Matthey's CRG pre-reforming catalyst range:
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