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In which process NH3 is compressed and returned to the autoclave?

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In which process NH3 is compressed and returned to the autoclave?

(a) Inventa process

(b) Chemico process

(c) Pechiney process

(d) Montecatini process

This question was addressed to me at a job interview.

The origin of the question is Inorganic Chemical in section Inorganic Chemical Industries of Chemical Technology

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Best answer
The correct answer is (b) Chemico process

Best explanation: In chemico process, CO2 is stripped from the off-gases by absorption in monoethanolamine. NH3 is recompressed and return to the autoclave and provides good temperature control.

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