The compressor creates negative pressure
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What are the characteristics of the negative pressure drawn by the catalytic cracking compressor?
The negative pressure generated by the compressor occurs when the speed rises too quickly at startup, resulting in backflow without an appropriate increase in capacity. This causes a sharp drop in the pressure of the distillation tower, resulting in the pump drawing in the oil and gas at the top of the tower; meanwhile, the liquid level in the separator rises rapidly. If not addressed promptly, this can lead to oil reaching the compressor and damaging its blades.
It can be understood as the rapid drop in pressure in the fractionation tower causing the crude gasoline pump to become vacuumed, which in turn leads to a rapid increase in the liquid level in the separator. Once the oil-gas separator at the top of the fractionation tower is full, the pressure in the fractionation tower rises rapidly due to the liquid seal; obviously, oil and gas may also be carried into the compressor. Is such an inference reasonable?