AMMONIA PRODUCTION APPARATUS Russian patent published in 1996 - IPC

FIELD: ammonia production. SUBSTANCE: apparatus has sulfur purification chamber, methane, carbon oxide conversion chamber, monoethanolamine purification chamber with steam generating unit, containing absorber, regenerator, steam boiler for monoethanolamine solution, steam condensate chamber, pump for supplying deep-regenerated monoethanolamine solution, air refrigerator, heat exchanger for deep-regenerated monoethanolamine solution, water methanizing and deaeration chamber with vacuum deaerator containing collector, thermal deaerator, three heat-exchangers- heaters for partially deaerated water. Outlet line of deep-regenerated monoethanolamine solution is connected via pipeline with third heat-exchanger- heater for partially deaerated water downstream of first or second heat- exchanger. Output of third heat-exchanger is connected with air refrigerator via pump for supplying deep-regenerated monoethanolamine solution. Steam condensate discharge line of steam condensate separator is connected via pipeline to thermal deaerator. Apparatus allows thermal deaerator heat recovery coefficient to be increased by decreased steam consumption, on the average of 1 t/hour; economy of deaeration and absorption processes to be increased by supplying steam condensate in deaerator and reducing temperature of deep-regenerated monoethanolamine solution; economy of monoethanolamine purification process for removing carbon dioxide from converted gas to be increased; steam condensate pumps with power consumption of 22 KW and secondary boiling up tank to be excluded from circuit; power consumption for driving electric engines of fans for deep-regenerated monoethanolamine solution air refrigerator to be reduced by 20 KW. EFFECT: increased efficiency by reduced consumption of steam for deaeration and of electric power by monoethanolamine purification process. 1 dwg