When the distillation unit is shut down, when should the circulating water, hot water, and fresh water be stopped?
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Since heat is exchanged between hot water and the oil slurry, should pump No. 1 be stopped first to shut off the hot water in heat exchanger No. 1? Shut them down one by one? Will there be pressure buildup or water hammer?
When stopping, do not turn off the water supply. If there isn’t enough steam, switch to venting mode; it’s sufficient to shut down the slurry system. After stopping, check whether it’s necessary to turn off the water system as well.
The water system should be used normally; cut off the water only after the circulating oil has stopped. Stop the circulation of water altogether. Water hammer is a normal phenomenon – as long as the vibrations in the pipelines are not severe, there’s no need to worry about it