Atmospheric tower operation
Thread Content
Some time ago, our 2.6 million normal pressure was forced to heat cycle due to snowy crude oil supply problems, but after the start of operation, it could not be adjusted normally. The temperature at the top of the tower was 110 degrees, the cold reflux was 35 tons, (usually 8 tons) the top circulation slosh volume, the first and second middle grades were abnormal, the first-line component was heavier and the yield was 5% ((usually 8%)), and the second line was only 4%-5% (usually 14%-14%) 16%) and the third line extraction volume of 10% are very small compared to the normal 12%. Direct steam is 16%-19% (normally 13%-14%) and the residual oil yield is high. The light oil yield can only reach about 38% (normally 46%). The crude oil distillation range is normal and the product quality is basically qualified. Can you guys think of a solution? How can it be restored to normal, or is there something wrong? This post was last edited by wanli515 on 2008-2-5 02:08 ]
It may be that some salt is formed during the heat extraction in the middle section, resulting in the inability to extract heat. Large cold reflux must be used to control the temperature in the tower. It’s hard to say specifically based on current conditions.
The salt content of our crude oil is generally controlled at 4-5 mg/l. I don’t know if the possibility of salt formation is high. The equipment was overhauled in June 2007.
Everyone has gone home to celebrate the New Year, please help me quickly!
How to deal with salt formation on trays and reboilers?