Energy efficient polyolefin process

A system, comprising:

• a polymerization reactor configured to produce a slurry comprising polyolefin particles and a diluent;
• a coolant system configured to provide a coolant to a reactor jacket disposed along a portion of the polymerization reactor, wherein an outlet temperature of the coolant exiting the reactor jacket is about 15° F. or more greater than an inlet temperature of the coolant entering the reactor jacket;
• and
• one or more automation controllers configured to:
• receive an input indicative of the outlet temperature of the coolant exiting the reactor jacket;
• and
• activate an output to actuate the coolant system to provide the coolant to the reactor jacket based at least in part on the input to maintain the outlet temperature about 15° F. or more greater than the inlet temperature of the coolant entering the reactor jacket.

A system, comprising:

• a polymerization reactor configured to produce a slurry comprising polyolefin particles and a diluent;
• a coolant system configured to provide a coolant to a reactor jacket disposed along a portion of the polymerization reactor;
• and
• one or more automation controllers configured to:
• receive a temperature input indicative of an outlet temperature of the coolant exiting the reactor jacket;
• receive a flow input indicative of an actual coolant flow rate through the reactor jacket from a coolant flow element;
• and
• activate a coolant control valve to adjust the actual coolant flow rate based at least in part on the temperature input indicative of the outlet temperature and the flow input to maintain the outlet temperature approximately 15° F. or more greater than the inlet temperature of the coolant entering the reactor jacket.