Reformation and regeneration
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What are the handling principles for incidents such as thermal shutdowns and cold shutdowns that occur during continuous reforming regeneration, and what are the steps to take during recovery? Thank you
Stop the circulation, control the oxygen content to prevent overheating in the burning zone, try to avoid any entry of blackening agents into the oxychlorination area, maintain the volume of circulating air; the main difference between a cold shutdown and a hot shutdown is whether the heater is turned off or not. If the temperature rise at the outlet of the oxychlorination zone occurs too rapidly when oxygen supply is resumed, it indicates the entry of blackening agents, and switching to blackening combustion can be considered. When the oxygen content and heater temperature in the burned area recover, ensure that the carbon deposits have been completely burned off or are under control before restarting the cycle. Gradually increase the elevation rate and adjust oxygen supplementation. Chlorine injection can be started after the temperature in the oxychlorination zone stabilizes.