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Thermal coupling apparatus and process for alcohol differential pressure distillation and waste liquor concentrate of molasses raw material

A technology of thermal coupling and raw materials, which is applied in the field of alcohol differential pressure distillation and waste liquid evaporation and concentration, can solve the problems of unfavorable combined device process smooth operation, difficult process control, complicated equipment manufacturing, etc., to save cooling water consumption, steam Consumption saving and steam consumption reduction effect

Active Publication Date: 2009-07-08
GUANGDONG ZHONGKE TIANYUAN NEW ENERGY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the one-effect evaporator that directly processes mature mash needs to introduce heating steam, and the equipment manufacturing is complicated. Moreover, the entire evaporation and concentration device has a large processing capacity, high energy consumption, and is not easy to process control, which is not conducive to the smooth operation of the entire combined device process.

Method used

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  • Thermal coupling apparatus and process for alcohol differential pressure distillation and waste liquor concentrate of molasses raw material

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Embodiment

[0038] as attached figure 1 As shown, an alcohol differential pressure distillation and waste liquid treatment device using molasses as a raw material is provided with a crude distillation column 2, a water washing column 12, a rectification column 20, a first-stage first-effect evaporator 28, and a first-stage second-effect evaporator 31 , a first-stage three-effect evaporator 34, a second-stage first-effect evaporator 40, a second-stage second-effect evaporator 43, a second-stage three-effect evaporator 46 and a second-stage four-effect evaporator 49. Wherein the top outlet of the rectifying tower 20 is connected to the shell side inlet of the reboiler 16 of the water washing tower through a pipeline, and the shell side of the reboiler 16 of the water washing tower is provided with two outlets, wherein the vapor phase outlet of the shell side is connected to the second crude distillation tower through a pipeline. The shell side inlet of the boiler 8 is connected, the liquid ...

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Abstract

The invention discloses an alcohol differential pressure distillation and waste solution concentration thermal-coupling device and technology thereof for syrup raw materials. The device comprises a set of differential pressure distillation device which is provided with a coarse distillation tower, a washing tower and a rectification tower, and a two-stage multi-effect vacuum evaporation and concentration device. The technology comprises: fermenting mash from the fermentation procedure is subjected to differential pressure distillatory refining of the coarse distillation tower, the washing tower and the rectification tower, and common edible alcohol can be obtained; a waste solution is subjected to two-stage multi-effect vacuum evaporation and concentration in turn; and wine vapor on the top of the coarse distillation tower is introduced into a first stage of the multi-effect vacuum evaporation and concentration device and taken as a heat source for evaporation. The device adopts the differential pressure thermal-coupling technology to realize mutual matching and utilization of energy in the evaporation procedure and the waste solution evaporation and concentration procedure so as to reduce the total vapor consumption of distillation during production of the common edible alcohol through the syrup raw materials, and concentration treatment of the waste solution to be between 3.0 and 3.6 tons per ton of finished alcohol, and saves approximately 30 to 40 percent of vapor, and approximately 25 tons of cooling water consumption per ton of the finished alcohol; and two-stage multi-effect vacuum evaporation and concentration can prolong the fouling period of the device which is then easy to overhaul.

Description

technical field [0001] The invention relates to a device and process for alcohol differential pressure distillation and waste liquid evaporation and concentration using molasses as raw material. technical background [0002] The content of organic pollutants in the waste liquid produced by using molasses as raw material to produce alcohol is high. At present, the methods of alcohol production and waste liquid treatment with molasses as raw materials roughly include the following processes: [0003] (1) The molasses alcohol distillation part and the molasses alcohol waste liquid treatment part each form an independent section, the logistics are connected in sequence, and the energy flow is not related to each other. [0004] ① Molasses alcohol distillation part: [0005] Use conventional two-column or multi-column differential pressure distillation to obtain finished alcohol of different specifications. [0006] ②The treatment part of molasses alcohol waste liquid mainly i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12G3/12C12H6/02
Inventor 唐兆兴姜新春周宏才夏云龙陈宪笙范豹
Owner GUANGDONG ZHONGKE TIANYUAN NEW ENERGY SCI & TECH
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