Technique for heating and cooling material in reactor by heat carrier through jacket

Abstract

The invention relates to a process for heating and cooling materials in a reaction kettle through a jacket by using a heat carrier. The process completes five working procedures by six loops. The loops are as flollows: a heat conduction oil heating loop: heat oil flows out from an oil outlet of a boiler and comes in and out of the jacket of the reaction kettle through a pipeline and a valve for circularly heating; a heating and cooling shift loop: the heat oil is sent back to the boiler by an oil pump through a pipeline; a cold conduction heat oil cooling loop and an ice salt water cooling loop: cold oil enters the jacket of the reaction kettle from an outlet of a cool oil tank by the pump through a pipeline and a cooler and returns to the cool oil tank through a pipeline provided with a balance valve; ice salt water returns to a cooling device from a refrigerating device through a cooler shell side and a pipeline, and cold conduction heat oil is circularly cooled in the cooler; a cool heating shift loop: cold oil comes out of the jacket of the reaction kettle, passes through the pipeline and returns to the cold oil tank from an inlet by the pump through the cooler; a cold oil pre-cooling loop: cold oil comes out of the outlet of the oil tank and returns to the cold oil tank by the pump through the pipeline and the shell side of the cooler introducing ice salt water. The invention has the advantages that the loop structure is compact, the process is stable, the heat exchange efficiency is high, and the high temperature and the low temperature are 300 DEG C and 15 DEG C below zero respectively.

Description

Technical field [0001] The invention relates to the technical field of heating and cooling materials in a reaction kettle during a chemical production process, in particular to the technical field of heating and cooling materials in the reaction kettle by a heat-carrying medium through a jacket. Background technique [0002] Certain chemical products need to be heated in the reactor during some periods of time, and the temperature requirements are different, some require below Baidu, some require above Baidu; some require cooling, and the required temperature is different: some require generally low temperature , And some require tens of degrees below zero. Some even require heating and cooling to be repeated alternately, which causes great difficulties in the heat exchange process. The traditional process is: heating water vapor, cooling with ice salt water below zero, alternate in the jacket. The advantage is that the method is simple. The disadvantage is that it is easy to mix...

AI Technical Summary

Problems solved by technology

Its disadvantage is that it is easy to mix steam and condensed water into the ice brine when the cold and heat alternate, or it is easy to misdischarge the ice brine to the sewer, so the loss of heat and cooling is very large, and due to the intrusion of steam condensate, the brine The concentration quickly becomes weak and deteriorates, making it unusable, affecting the normal operation of the cooling system, and unable to ensure normal production

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