The influence of the distillation column top pressure and reflux on the quality of the product at the column top
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To reduce the energy consumption of the distillation tower, it is necessary to consider the impact of adjusting the top pressure and reflux on the quality of the product at the tower top. If both the reflux rate and the top pressure are reduced, will the quality of the product at the tower top deteriorate? I’d like to ask for advice
“To reduce the energy consumption of distillation towers, this issue should first be addressed within the scope of the process parameters. Moreover, the original design cannot leave you with much energy consumption to exploit. Believe me, maintaining stable production and ensuring that the equipment operates safely over a long period is the best way to save energy and reduce consumption. If one goes to extremes and keeps the manufacturing process on the edge of its limits, it will lead to fluctuations in product quality, with defects frequently occurring. Do you agree with this? ? ? For reference.
If the temperature of the sensor plate deviates from the designed value, it might be possible to make an adjustment; otherwise, it’s better to give up
Under stable production conditions, it is possible to reduce both the bottom temperature and pressure appropriately. If there is a high reflux rate, then it’s even more necessary to lower these values; the feed temperature can also be adjusted
Stable production is often used as an excuse for not seeking optimization
For the voltage reduction operation, first consider how much excess load there is in condensation. You can give it a try in winter. The core is the relationship between pressure and relative volatility, which involves changes in the composition at the top/bottom of the tower. . . . Otherwise, talk of energy conservation is meaningless. . .
As the reflux and tower pressure decrease, the load must be reduced accordingly
The purity of the product will definitely decrease, but its yield will increase slightly; operating within the specified process parameters is feasible. However, it is necessary to properly control the gas-liquid phase equilibrium and heat balance to prevent mixing of components within the tower, as this can affect the tower’s separation efficiency over time.
What are the raw materials and production capacity? What are the separation requirements? I’ll help you do the calculations