Energy recovery of high-pressure rich liquid in the ammonia synthesis decarbonization process
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I would like to ask industry professionals: how common is the current domestic practice of using a setup with a turbine, coupling, and pump connected directly together? It has been found that Sichuan Meifeng uses this method for its 200,000-ton capacity of synthetic ammonia production, with a recovery power of 370 kW; the equipment in question is from Niigata Worthington in Japan. Are there any other large-scale synthetic ammonia plants that use this method? Thank you!
Our company uses a turbine with a recovered power of 150 KW; it is domestically produced
Energy recovery of the high-pressure rich liquid in the decarbonization system: Here we use a hydraulic turbine + motor + pump; it is possible to use only the motor + pump, but not just the hydraulic turbine + motor, in order to prevent damage to the motor windings. During decarbonization startup, a motor + pump is used first; during normal production, a hydraulic turbine is employed. Based on whether it is in use or not and the changes in motor current, I calculated that energy savings of around 420 KW can be achieved. It’s the voltage multiplied by the current change; I’m not sure if this is the correct way to calculate it
The decarbonization operation pressure in our old plant is around 1.9 MPa, with turbines used to recover energy.