Material system intermittent extracting and rectifying method reaching solvent boiling point higher than that of material by single tower and double-still

A technology for extractive distillation and extractive distillation column, which is applied to extractive distillation and other directions, can solve the problems of increasing operation complexity and energy consumption, difficult to meet the solvent accumulation amount, and small equipment operation flexibility, so as to achieve good equipment operation flexibility and increase The effect of stable steam volume and stable gas flow rate
CN1676188AInactive Publication Date: 2005-10-05TIANJIN UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
TIANJIN UNIV
Publication Date
2005-10-05
Estimated Expiration
Not applicable · inactive patent

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Abstract

The present invention discloses a single-tower double-kettle system interrupted extraction rectification method capable of implementing that the boiling point of solvent is higher than that of material. The described single tower is extraction rectification tower whose interior is equipped with filler recovery section and extraction rectification filler section, and the double-kettle comprises solvent kettle and material kettle which are connected with bottom portion of extraction rectification tower. Said invention also provides the concrete steps of said system interrupted extraction rectification method.
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Description

technical field

[0001] The invention relates to a batch extraction and rectification method in which the boiling point of a solvent is higher than that of a material in a single tower and two kettles, and belongs to the batch extraction and rectification technology. Background technique

[0002] At present, the conventional conventional batch extractive distillation method is mainly completed by an extractive distillation tower and a tower reactor. During the operation, the solvent is continuously added, and the amount of liquid stored in the tower reactor will continue to increase, thus bringing a series of problems: the tower reactor It is difficult to meet the cumulative amount of solvent with a large capacity, so the amount of solvent is greatly limited, and the operation flexibility of the equipment is small; with the accumulation of solvent in the tower kettle, the boiling point of the kettle liquid will continue to rise, and it is necessary to maintain a stable rising ...

Claims

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