FIELD: chemistry.
SUBSTANCE: ammonia is produced from synthesis-gas, obtained as a result of reforming hydrocarbon raw material. Partially reformed gas, after stage of primary reforming, passes through stage of heat-exchange reforming and stage of secondary reforming. Partially reformed gas at the stage of heat-exchange reforming is reformed by indirect heat-exchange with synthesis-gas, removed from stage of secondary reforming. All steam, produced in steam recovery boilers of reforming and at enterprise sector of ammonia production, is heated in one or more superheaters, located behind ammonia converter of enterprise sector of ammonia production.
EFFECT: invention makes it possible to improve thermal integration of ammonia obtaining process, reduce predisposition to metal dusting, nitration and stress corrosion in steam recovery boilers and superheaters of enterprise.
9 cl, 2 dwg
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