Temperature of oil returning to the tower after absorption
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Dear sea friends, what temperature is more appropriate for controlling the return temperature of the oil with high absorption capacity to the tower?
The temperature control of the highly absorbent oil returning to the tower depends mainly on the specific process requirements and operating conditions. Generally, the appropriate temperature should ensure maximum absorption efficiency and minimum energy consumption. Generally speaking, in processes involving gas absorption, excessively high temperatures can reduce the absorption efficiency, as the solubility of most gases decreases as temperature rises. Therefore, it is recommended to consult the equipment manufacturer or refer to the relevant process manuals based on your specific process parameters (such as pressure, gas composition, type of absorbent, etc.) in order to determine the optimal control temperature. In the absence of specific data, the generally recommended temperature range is between 40 and 60 degrees Celsius; adjustments may be necessary to suit actual operating conditions. .
The temperature of the return stream to the tower should be determined based on the conditions of the reabsorption tower; for distillation towers, the overall temperature of the return stream can be adjusted by controlling the flow rate back to the tower
The temperature in the refraction column for rich absorbent oil depends mainly on the initial distillation point of diesel; our refeed temperature is around 90°C.
The temperature of the rich absorption oil returning to the distillation tower is generally kept between 60–100°C, depending on the operational adjustments of the distillation tower. It can be used to determine the initial boiling point of diesel, but there is limited room for adjustment, as the temperature of the rich absorption oil exiting the reabsorption tower is usually around 40°C. After heat exchange with diesel or intermediate products, the temperature of the oil returning to the tower in our facility is around 80°C.
Generally, it is sufficient to ensure that both the temperature after water cooling and the power of the pump meet the required standards in order to achieve energy savings