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Reactive distillation unpowered circulation technology and device

A technology of power circulation and reactive distillation, applied in the field of reactive distillation, can solve the problems of difficult operation, high maintenance cost, large scale of equipment, etc., and achieve the effect of positive enterprise benefit, enhanced circulation and less heat.

Active Publication Date: 2014-07-16
YANKUANG GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In short, the existing defects are: high energy consumption, large device scale, many sealing points, complex equipment, high maintenance costs, and difficult operation

Method used

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  • Reactive distillation unpowered circulation technology and device
  • Reactive distillation unpowered circulation technology and device
  • Reactive distillation unpowered circulation technology and device

Examples

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Embodiment Construction

[0027] The technical solution of the present invention will be described in detail below in conjunction with specific embodiments and accompanying drawings.

[0028] Take the production of butyl acetate as an example.

[0029] In the rectification tower system, butanol and acetic acid proportioned according to the reaction equation pass through the raw material preheater 16 (E3105), and are added from the upper part of the rectification tower tank (T3101), and the liquid reaction liquid containing catalyst and raw materials is in the rectification tower The esterification reaction takes place in the tower kettle 2. The final butyl acetate product material provides a heat source for the raw material preheater 16 (E3105) to heat the mixed raw material to save energy.

[0030] Under the action of potential difference, self-gravity and siphon force, the material in the natural convection pipe at the bottom of the distillation column 2 and the condensate in the overflow weir 6 are...

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Abstract

The invention belongs to the technical field of reactive distillation, in particular relates to a reactive distillation unpowered circulation technology and device. The technical scheme is as follows: gaseous-phase condensate in a rectifying tower tray falls into a downflow weir from a tower plate; under the action of potential difference, self gravity and siphon force, materials in a forced convection tube and a natural convection tube on the bottom of the tower kettle of the rectifying tower are mixed; then the mixture enters a reboiler; after the mixture reaches reaction temperature after being heated by the reboiler, mixed liquor enters the tower kettle of the rectifying tower; and after the mixed liquor reacts, gaseous phase rises to the rectifying tower connected with the upper end of the tower kettle of the rectifying tower so as to realize unpowered circulation. Reaction and separation are centralized in one tower, the purpose of unpowered circulation is achieved by the thermodynamic principle, the siphoning and the potential energy difference, and defects existing at present can be effectively solved.

Description

technical field [0001] The invention belongs to the technical field of reactive distillation, and in particular relates to a reactive distillation non-powered cycle process and device. Background technique [0002] The traditional reactive distillation process is that the material enters the reaction kettle for reaction, and then is sent to the falling film reboiler at the top of the reaction kettle by the evaporator circulation pump, and the heated liquid from the falling film reboiler returns to the reaction kettle, and is heated in the reaction kettle. Equilibrium reaction occurs in the reactor, and the liquid in the reactor is continuously pumped from the bottom of the reactor by the evaporator circulating pump to the falling film reboiler for heating, and the gas phase material at the outlet enters the rectification tower from the upper part of the reactor; The gaseous material enters the rectification tower from the bottom, and the unreacted material accumulates at the...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D3/14B01J8/00C07C69/14C07C67/08C07C67/54
CPCY02P20/10
Inventor 裴学成陈荔马廷卫何培根张玉娟张志伟
Owner YANKUANG GRP CO LTD
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