[Q&A Question 225] 2016.12.01
Thread Content
【Q&A Question 225】December 01, 2016: How to deal with low initial boiling point of refined diesel? A reference ** will be shown after responding; scoring is achieved by answering the key points. First, it is necessary to increase the feed flow rate and feed temperature of the two distillation columns; secondly, adjust the amount of stripping steam and the outlet temperature of F201. Increase the bottom circulation volume to raise the bottom temperature, and adjust the top reflux volume to increase the top temperature, while also maintaining stable column pressure. And then make further adjustments. Until it is qualified. Summary post of Q&A from 2016 (updated as of November~~~~) http://bbs.hcbbs.com/thread-1597792-1-1.html Seeking sponsors for the “2016 Haichuan Top 10 Members Selection Contest” http://bbs.hcbbs.com/thread-1628108-1-1.html (Source: Haichuan Chemical Forum)
First, it is necessary to increase the feed flow rate and feed temperature of the two distillation columns; secondly, adjust the amount of stripping steam and the outlet temperature of F201. Increase the bottom circulation volume to raise the bottom temperature, and adjust the top reflux volume to increase the top temperature, while also maintaining stable column pressure. And then make further adjustments. Until qualified
Replace the raw material, increase the temperature at the bottom of the separation tower, raise the temperature at the top of the distillation tower, reduce the reflux rate, and lower the pressure in the distillation tower
Increase the bottom temperature of the tower, increase the top temperature of the tower, and reduce the top pressure! Adjust the raw materials!
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1. High pressure in the distillation tower； 2. High bottom temperature of the tower ； 3. The reflux ratio is too low ； 4. The bottom circulation ratio is low.
1. Slightly increase the top temperature. 2. Increase the stripping steam flow on this line slightly. 3. If the processing volume is too high, reduce it appropriately
First, it is necessary to increase the feed flow rate and feed temperature of the two distillation columns; secondly, adjust the amount of stripping steam and the outlet temperature of F201. Increase the bottom circulation volume to raise the bottom temperature, and adjust the top reflux volume to increase the top temperature, while also maintaining stable column pressure. And then make further adjustments. Until it is qualified.