Investigation on the fourth recovery tower in four-tower distillation
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As the title suggests, the yield of the fourth tower is really low. I wonder if everyone has activated this equipment; please conduct a survey to see whether the amount of water and steam consumed, etc., is cost-effective compared to the price of the methanol recovered
http://bbs.hcbbs.com/viewthread.php?tid=782687&from=recommend_f Qingfeng Liushui has already done the statistics; check the post by yourself.
Reply to 2# Shouhou: Thank you. I have found the relevant information. After considering whether to propose the cancellation of the fourth tower, it seems unlikely that the design institute will agree to it
Of course it can’t be canceled. Ways can be found to save energy. The gas from the tops of the four towers can be sent directly to the three towers, and a small branch pipe is used to supply reflux from the four towers to the three towers’ reflux pumps. This saves one heat exchanger and one pump. It’s definitely very cost-effective to set up four towers like this.
If you send the gas from the tops of the four towers directly to the three towers, will the quality of the products from those three towers be satisfactory? The fourth tower was designed primarily with environmental protection in mind; its main products are fusel oils and some high-boiling-point substances, and those that can be sold generate revenue. If it’s not turned on, and if it fails environmental standards, it can easily be shut down.
The fourth tower is generally designed with environmental protection in mind; impurities such as fusel oils are not even a waste to discard, and sending them back to the third tower is rather troublesome. . . .
The fourth tower is generally not used; it doesn’t generate much profit
Guo is here too, hehe, first grade in elementary school. . Keep going.
Generally, the vapor from the top of the recovery tower is returned to the pre-tower as feed, so that methanol is not lost.