Plant production is 80,000 TPY of Ammonia and 150,000 TPY Urea
The plant is based on coal to produce synthesis ammonia and urea. The plant started up in July, 2009 and shut down in 2015.
The process technology adopts atmospheric fixed bed intermittent gasification process, the designed capacity for this plant is 230kta, among of them, ammonia is 80kta and urea is 150kta.
The plant has been well-maintained, the documentation is complete and the data is updated.
Consumptions: Each ton of synthetic ammonia consumes 1.6 tons of coal and 1,580kwh of electricity.
Use air and steam as gasifying agent, reacting with the carbon in coal under the normal pressure and high temperature, the semi-water gas is obtained by the fixed bed (gas furnace) intermittent air method, after washing and desulfurization by electrostatic decoking device and water scrubber, it is fed to the first, second sections of compressor to be compressed to 0.8mpathen and then discharged from the second section of compressor.
After cooling and coke filtration, entering into the hot water saturation tower, at the same time, adding steam. Through the whole low shift transformation system, the carbon monoxide (CO) in the semi-water gas will be converted as Hydrogen and CO2 (shift gas) required by ammonia in the action of catalyst. After further desulphurization by the shift gas desulphurization system, another part of the gas is pressurized by the third section of the compressor and fed into the decarburization solution to remove the carbon dioxide from the gas.
After pressurized in the fourth and fifth section of the compressor, entering into the methanol synthetic reactor. Catalytic synthesis of methanol gas under 260°C, and the methanol is isolated by alcohol subsystem. After cooling, the separated process gas will be sent to the copper wash section. After CO, CO2 and hydrogen sulfide absorbed by the copper liquid, the process gas is pressurized by the sixth section of the compressor and sent to the synthetic system, and the liquid ammonia is produced under the action of the catalyst.
The CO2 (after decarburization) compressed by CO2 compressor and the liquid ammonia (from the liquid ammonia storage tank) pressurized by the ammonia pump will be sent to the urea synthesis tower to synthesize urea.
Circulating Machine (synthesis ammonia)
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