Colour during reboiler change over
Colour during reboiler change over
(OP)
We have a kerosene rerun column. This column is separating heavy kerosene from desired cut required for N Paraffin manufacture. Reboiler for this column is a hot oil heated shall and tube reboiler with hot oil on tube side.
We face repetitive problem of fouling on shall side. We have provided one more reboiler for preventing shutdown required for cleaning.
The problem is during changeover of reboilers [From fouled to clean], bottoms product colour gets degraded badly, resulting in product downgradation. This continues for two to three days and normalises later on.
Has anyone else faced similar problem? What could be the possible causes and remedies for such a problem so that bottoms product colour does not go bad during changeover.
We face repetitive problem of fouling on shall side. We have provided one more reboiler for preventing shutdown required for cleaning.
The problem is during changeover of reboilers [From fouled to clean], bottoms product colour gets degraded badly, resulting in product downgradation. This continues for two to three days and normalises later on.
Has anyone else faced similar problem? What could be the possible causes and remedies for such a problem so that bottoms product colour does not go bad during changeover.





RE: Colour during reboiler change over
During change over ,residence time may exceed the design limit leading to decomposition of one of the components. Decomposition will result in carbon formation that may change the color .
RE: Colour during reboiler change over
RE: Colour during reboiler change over
Thanks a lot! We simply hydrojet the exchenger, no chemical cleaning is done.
thanks again
RE: Colour during reboiler change over