FCC pressure drop problem
Thread Content
The top pressure of the settler tower is 130KPA, the top pressure of the fractionation tower is 120KPA, and the inlet pressure of the air compressor is 70KPA. Is this pressure distribution normal?
The top pressure of the fractionating tower is 120KPA, and the inlet pressure of the air compressor is 70KPA, which is a bit high.
The pressure at the top of the settler tower is 130KPA, and the pressure at the top of the fractionation tower is 120KPA. It cannot be so small. Calibrate the table.
There may be a problem with your data. The settler to fractionation tower is too small, and the fractionation tower to the gas compressor is too large. I don’t know your processing load and fractionation tray model, but the total pressure drop is about the same.
The pressure at the top of the fractionation tower is 120KPA, and the tray is a combination of float valve type and tongue type.
The top pressure of the fractionating tower is indeed a bit too low. Check it with the on-site pressure gauge.
The pressure drop from the settler to the fractionating tower is too small, and the pressure drop from the fractionating tower to the gas compressor is too large, which may be related to the raw materials. The amount of gas production and the amount of injected water vapor will affect this pressure drop.
The pressure drop from the settler to the fractionating tower is a bit small, and the pressure drop from the fractionating tower to the inlet of the air compressor is too large.； The settler is 130KPa, the split top is 110-115 KPa, and the air compressor inlet is around 90 KPa, which is normal.
The inlet pressure of our air compressor used to be more than 60 KPA. Recently, the air cooling at the top of the tower was replaced with water cooling, which increased it by 7 to 8 KPA. The outlet pressure of the air compressor is 1.21MPA, the steam volume used by the machine is 41T/H, and the rotation speed is 6500. I personally feel that there must be something wrong.
The data provided by the poster is difficult to understand. It is incredible that the pressure drop from the settler to the fractionating tower is only 10kpa. The pressure drop in the oil and gas pipes is not only 10kpa. Not to mention the pressure drop in the fractionating tower, unless the new device is operating at minimum load, it may be difficult to achieve. The 70kpa from the fractionating tower to the inlet of the air compressor is considered normal under normal circumstances and is slightly larger. However, compared with the data in front of your device, it is too large. If there is no problem with the data, there may be a problem with the fractionation tower. Can the product be controlled? Is the tray blown over? Is the reflow too small causing dry board?