Extractive distillation process in hydrofining process of crude benzene
A technology of hydrofining and extractive distillation, applied in the direction of distillation purification/separation, organic chemistry, etc., can solve problems such as insufficient heat supply, unfavorable operation of on-site employees, and unfavorable operation of extractive distillation tower height, so as to improve quality and facilitate operation , the effect of reducing the operating height
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[0023] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0024] See figure 2 , an extractive distillation process in the hydrofining process of crude benzene, the equipment includes extractive distillation tower C-201, stripping tower C-202, liquid-liquid separation tank D-202, reflux tank D-201, tower top cooler E -201; the lower part of the stripping tower C-202 is provided with a kettle-type reboiler E-202, and the outlet at the top of the extractive distillation tower C-201 is connected to the side of the stripping tower C-202, and the lower part of the stripping tower C-202 is connected to the liquid The liquid separation tank D-202, the liquid-liquid separation tank D-202 is connected to the side of the extractive distillation tower C-201; the top of the stripping tower C-202 is connected to the top cooler E-201, and the top cooler E-201 The other end is connected to the reflux tank D-201, an...
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