What is an appropriate specific consumption of steam for methanol distillation?
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What is an appropriate specific consumption of steam for methanol distillation? For three-tower or four-tower distillation, how much steam is appropriate per ton of methanol consumed?
To put it appropriately, the less, the better; the theoretical minimum amount is the heat obtained from the vaporization of a ton of methanol aqueous solution divided by the heat released when steam turns back into liquid； However, heat loss and thermal efficiency issues always exist during the manufacturing process; currently, the steam consumption for 3-column distillation is approximately 1 ton per ton of methanol
Being able to reach 1T/T of methanol shows that your operations are quite good. Our best level at the moment is 1.17
That doesn’t work either; with the changes in distillation load, basically no steam is flowing. I’m not sure how your company is
The latent heat of steam is 2200 kJ/kg, while that of methanol is 1103 kJ/kg; it’s reasonable to assume that 1 ton of condensed steam can produce 2 tons of methanol vapor.
After the reform of the tray, the steam consumption can be reduced to 0.9 tons per ton of methanol
How did your company make the change? Can you talk about it?
Products with higher efficiency for replacing tower internals
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