Abstract
AbstractMethods of hydrogen gas production for hydrogenation are discussed: steam reforming of natural gas, electrolysis, by‐product clean‐up by PSA (pressure swing absorption) or scrubbing, and others. Hydrogen can be obtained from a customer‐owned hydrogen plant or as a merchant product supplied by an industrial gas supplier. The merchant product can be delivered in trailers as gas, liquid‐high (up to 2,200 psig), low pressure (up to 130 psig), or supplied over the fence from a pipeline or hydrogen generating plant. Several factors must be considered in selecting an optimum supply, including availability and cost of capital and of operating labor, use patterns, average demand, instantaneous demand, use pressure, growth projections, and purity requirements. Recent field test data have shown that increased hydrogen purity can improve the hydrogenation processes.
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