High outlet temperature of the converter

2018-11-04View Original

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Our methane conversion unit uses heat-exchange type converters as well as two-stage converters; the composition of the feed gas remains roughly the same. The temperature of the catalyst bed in the two-stage converter is low – 800–830 at the upper layer, 760–780 in the middle layer, and 750–780 at the lower layer – yet the exit temperature is 870–890. Only one-third of the catalyst has been replaced so far, the pressure difference across the catalyst bed is 0.03 or 0.04, and the methane content at the exit is around 3%. I would like to ask everyone what could be the reason for this?

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High outlet temperature of the converter

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