Is the pressure at the top of the ethylene distillation tower high, and is the ethylene content at the bottom of the tower high?
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Is the pressure at the top of the ethylene distillation tower high, and is the ethylene content at the bottom of the tower high?
Without an actual DCS diagram in operation, it is impossible to analyze the specific reasons, making it difficult to provide a targeted response. In the case of a medium-pressure ethylene distillation column (1.6 MPa), the column pressure can be appropriately reduced to increase the relative volatility of ethylene and ethane, thereby reducing the amount of ethylene at the bottom of the column. If a heat pump system is formed with ethylene, it is necessary to adjust the suction pressure of the ethylene compressor. If the ethylene content in the feed composition is much higher than the design value, it is normal for the ethylene loss at the bottom of the tower to increase slightly. There are many other issues; it’s impossible to analyze them.