Chloromethane distillation tower
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The distillation tower was originally designed to receive a feed rate of 27 tons per hour; currently, only 8 tons are fed in, with 5 tons of steam being used. If a tower with an 8-ton feed is redesigned, the energy consumption (in terms of steam) can be reduced by a certain percentage
It will not decrease in proportion; the backflow at Ota is large, resulting in high energy consumption. The small tower reduces backflow, which lowers the amount of steam.
What should the reflux ratio be during design? What is the actual reflux ratio? Why is the current capacity only 8 t/h? Is it because the product quality is not up to standard at 27 t/h, or is it due to a lack of raw materials?
The feed rate is now 1/3 of the original level, and to compensate for the insufficient liquid phase load, the reflux may be increased. With a redesign, the tower diameter is reduced, which lowers energy consumption. The degree of reduction is related to the reflux ratio at 1/3 feed rate.