What to do if asphalt is carried upward in the asphalt stripping tower
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What should be done if asphalt is carried upward in the asphalt stripping tower?
Identify the specific cause before taking action: 1. The feed temperature to the tower is too low – increase the furnace temperature； 2. Back pressure is too low – increase the back pressure ； 3. Tower pressure is too low – increase tower pressure ； 4. Low steam temperature or presence of water – ensure the quality of the stripping steam ； 5. Tower load is too high – reduce the load ； 6. The liquid level control in the tower is set too high – lower the liquid level slightly ； 7. Inaccurate instruments — Calibrate the instruments ；
1. Too low feed temperature to the tower – increase furnace temperature； 2. Back pressure is too low – increase the back pressure ； 3. Tower pressure is too low – increase tower pressure ； 4. Low steam temperature or presence of water – ensure the quality of the stripping steam ； 5. Tower load is too high – reduce the load ； 6. The liquid level control in the tower is set too high – lower the liquid level slightly ； 7. Inaccurate instruments — Calibrate the instruments ； We’ve tried everything you mentioned, but there’s no noticeable effect
The processing volume has been reduced by half; there are no issues with the steam, the instruments are functioning properly, and the liquid level is within the normal range. An increase in temperature of 20 degrees does not have a significant effect!
As for tower pressure, the stripping tower is a low-pressure device, so the pressure cannot be increased too much
Those with experience are welcome to share
How do you detect asphalt on the top of the tower? Could you please provide detailed information on the back pressure, column pressure, furnace temperature, as well as the top and bottom temperatures? If there are no abnormalities with the tower equipment, the possible adjustments include reducing the tower’s linear speed and decreasing the viscosity of the asphalt; in the worst case, the tray inside the tower may get turned upside down.
The temperatures at the outlet of the heating furnace and at the top of the asphalt stripping tower are very close to each other; reducing the stripping steam, halving the processing volume, or increasing the temperature of the heating furnace – none of these solutions work
““The temperatures at the outlet of the heating furnace and at the top of the asphalt stripping tower are very similar” – that’s unlikely. What is the temperature of the stripping steam? Is there a washing section?
If you put it that way, it’s possible the tray has flipped over