ENGRANIA
Mechanical
- Dec 17, 2008
- 34
I work in a petroleum refining company. We have faced a problem in the middle distillates hydrotreating unit.
the change in the delta pressure for the outlet tube side of the second effluent recycle heat exchanger ( U bend tube) after the unifining reactor increased gradually from 0.2 bar to 4 bar.
knowing that ,
1. the reactor with heat exchangers have not be maintained for 20 years.
2. When we increased the capacity of the unit ,the delta pressure increased and when we decreased the the capacity ,the delta pressure decreased.
Can anybody help, why the delta pressure through heat exchanger tubeside increased ?
the change in the delta pressure for the outlet tube side of the second effluent recycle heat exchanger ( U bend tube) after the unifining reactor increased gradually from 0.2 bar to 4 bar.
knowing that ,
1. the reactor with heat exchangers have not be maintained for 20 years.
2. When we increased the capacity of the unit ,the delta pressure increased and when we decreased the the capacity ,the delta pressure decreased.
Can anybody help, why the delta pressure through heat exchanger tubeside increased ?