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Sulfur Recovery Unit Control for Acid Gas with Varying Hydrocarbon Content

IP.com Disclosure Number: IPCOM000251433D
Publication Date: 2017-Oct-31

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The Modified Claus Process operates best when concentrations of reactants are relatively constant over time. If too much air is introduced, the yield of sulfur will decrease, and additional SO2 will have to be reduced to H2S in the tail gas unit. While this can be managed with feedforward or feedback control, presence of heavy hydrocarbons can make it challenging. It is an object of this invention to improve the control scheme for MCP's.