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I. Heat transfer medium, which provides the reaction heat and is used to regulate the temperature control of RTMCS； II. Reaction gas retention to achieve thorough mixing and dispersion of the slurry, as well as backmixing at the apparent space velocity and oil-gas entrainment ； Adjust the reaction residence time according to the processing load to control the reaction depth ； III. Active ions, which provide hydrogen for reaction coordination; components for saturated thermal cracking; mild desulfurization and denitration ； IV. Saturated medium, saturated slurry at the bottom of the high-density area; dissolved hydrogen, temperature reduction, and mixing to reduce the likelihood of coking ； V. Backflow medium: used for level measurement, backflow hydrogen, defoaming agents, pressure measurement, etc., to prevent blockages ； VI. Dehydrogenation reaction heat: High-pressure streams carrying LPG, naphtha, diesel, and wax oil are used to remove the heat generated by the dehydrogenation reaction, which is then exchanged with hydrogen upstream of the furnace for utilization ； Achieve the preliminary separation of atmospheric distillates and vacuum distillates ； VII. Accident cooling: the unit is shut down urgently, the cycle hydrogen heater is stopped, and the bypass cold hydrogen reactor is put into standby mode to ensure a continuous flow ； The high-temperature interlock of the reactor causes it to cool down, as well as the slurry, thereby protecting the equipment and preventing coking or blockages ； VIII. Shutdown aeration: During shutdown, the oil and gas in the aeration reactor are sent to high-pressure distillation units for oil removal, thereby replacing steam in order to carry out high-temperature purging of the high-pressure hydrogen system, pressure reduction for hydrogen release, and prevention of embrittlement.