Issues with the evaporation section of the delayed coking fractionation tower – please advise, experts.
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The lower the temperature in the evaporation section of the distillation column, the greater the recycle ratio; the higher the temperature in the evaporation section, the smaller the recycle ratio. Logically, the temperature in the evaporation section is controlled by the upward and downward feed to regulate convection, as well as the flow rate. Temperature of oil and gas in the coke tower. The definition of the circulation ratio is not ； Radiant feed – counterflow/multi-counterflow? Increasing the flow circulation ratio doesn’t that reduce it? Well, it should be that the lower the temperature in the evaporation section, the smaller the circulation ratio. Please advise me, I’m not very smart
Definition of the cyclic ratio in delayed coking: 1. Cyclic ratio = amount of recycled oil / amount of fresh feed oil. 2. The combined cycle ratio = (amount of fresh feed oil + amount of recycled oil) / amount of fresh feed oil = 1 + recycling ratio. These two definitions are commonly used; our plant generally employs the recycling ratio.
How is there a direct connection between the temperature in the evaporation section and the circulation ratio? Different devices and different processes result in differences