C9 hydrogenation
Thread Content
The C9 hydrogenation unit has just started operating, and the pressure difference between the inlet and outlet of the main reactor has risen to 100 kPa. What is the reason for this?
The pre-reaction did not proceed well, which led to an increase in the pressure during the main reaction. What are the levels of pre-reaction dienes and gums?
It’s likely that coking has caused a decrease in the catalyst’s activity; this is already happening at the start of operation. Check whether the feed meets the specified requirements
Will operations start from the beginning, or after maintenance? Where will the C9 raw material come from, and what is the price of bromine? If operations start after maintenance, was the feed heat exchanger cleaned during that maintenance? The main reason for the increase in pressure difference is coking; dienes tend to coke severely at temperatures above 100 degrees