The heat value of the slurry bed is not low

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Her heat score isn’t actually “low” – she is in the highest position and adopts the tallest stance. Standing at the highest point is necessary because the process requires reducing pressure and temperature to stop the reaction, and the slurry must flow downward by gravity; therefore, it is essential to stand at the top of the reaction framework. The optimal operating condition is achieved by enabling the successful transfer of the slurry from one stage to another, removing the unstable molecules (vapor, gas) that affect the stability of the slurry, thus facilitating an effective separation between the atmospheric pressure tower and the reduced pressure tower and shortening the path taken by the slurry ； The high attitude stems from the ability to accept the ‘dirty’ oil from the oil washing tower and the ‘slaggy’ oil from slag discharge in a selfless manner. The low score is not only related to low pressure; it also requires a short residence time with the liquid level kept as low as possible (30%, LLS 5%) ； The temperature should be lower than the reaction shutdown condition of 405°C (to minimize the heat energy under reduced pressure), and it is preferable to be close to the thermal standby condition of 370°C ； The flow rate in the slurry outlet pipeline must not be low ； The pressure difference with the downstream side is too low; thus, there is no significant migration from the gas phase to the liquid phase.