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Production device and process for co-producing fuel ethanol and special-grade edible alcohol

A technology for edible alcohol and fuel ethanol, which is applied in the preparation of alcoholic beverages, chemical instruments and methods, and the preparation of organic compounds. Improve market adaptability and facilitate the effect of waste removal

Pending Publication Date: 2020-01-17
GUANGDONG ZHONGKE TIANYUAN NEW ENERGY SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the existing fuel ethanol and special-grade edible alcohol devices and processes can only produce specific products alone. The fuel ethanol device can only produce fuel ethanol. Although the special-grade edible alcohol device can produce fuel ethanol, the process energy consumption is high. The quality is poor, and the two products cannot be easily switched according to market demand

Method used

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  • Production device and process for co-producing fuel ethanol and special-grade edible alcohol
  • Production device and process for co-producing fuel ethanol and special-grade edible alcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment example 1

[0046] Operate the crude distillation tower, rectification tower A, light wine tower and molecular sieve dehydration system for the production of fuel ethanol, the specific method is as follows:

[0047] The mature mash from fermentation enters the degassing section of the crude distillation tower through the first preheater, and the degassed mash enters the stripping section of the crude distillation tower; the gas phase crude wine vapor after distillation in the crude distillation tower enters the refining Distillation tower A, the light wine extracted from the bottom of rectification tower A is preheated and then enters the light wine tower; the liquor produced from rectification tower A and light wine tower is heated in the liquid phase by the second preheater, and then enters the molecular sieve dehydration system for dehydration Finally, the finished fuel ethanol is obtained.

[0048] In this process, the light wine tower is indirectly heated by raw steam, and the wine v...

Embodiment example 2

[0050] The crude distillation tower, rectification tower A, dealdehyde tower, water washing tower, rectification tower B, methanol tower, industrial alcohol tower, light wine tower are running, and the molecular sieve dehydration system is not in operation. It is used to produce special-grade edible alcohol. The specific method is as follows:

[0051] The mature mash from fermentation is preheated by the first preheater and enters the degassing section of the crude distillation tower, and the degassed mash enters the stripping section of the crude distillation tower; the gas phase crude wine vapor after distillation in the crude distillation tower Enter the rectification tower A, and 95% of the wine liquor from the upper area of ​​the rectification tower A enters the dealdehyde tower; the wine liquor after dealdehyde in the dealdehyde tower enters the water washing tower, and the light liquor after washing and extracting impurities is passed through After preheating by the ligh...

Embodiment example 3

[0055] Refer to the implementation cases 1 and 2 for the heating methods of each tower, run the crude distillation tower, rectification tower A, dealdehyde tower, water washing tower, rectification tower B, methanol tower, industrial alcohol tower, light wine tower and molecular sieve dehydration system for Co-production of special-grade edible alcohol and fuel ethanol, the specific method is as follows:

[0056] The mature mash from fermentation enters the degassing section of the crude distillation tower through the first preheater, and the degassed mash enters the stripping section of the crude distillation tower, and the gas phase crude wine vapor after distillation in the crude distillation tower enters the refining Distillation column A.

[0057] A part of the liquid phase in rectification tower A is taken out of the dealdehyde tower, and the wine liquor after dealdehyde enters into the water washing tower, and the light liquor after water washing and extraction of impur...

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Abstract

The invention discloses a production device and process for co-producing fuel ethanol and special-grade edible alcohol. The production device comprises a first preheater, a second preheater, a light wine preheater, a coarse distillation tower, a rectifying tower A, a dealdehyding tower, a water washing tower, a rectifying tower B, a methanol tower, an industrial alcohol tower, a light wine tower and a molecular sieve dehydration system. The process comprises following steps: operating the coarse distillation tower, the rectifying tower A, the light wine tower and the molecular sieve dehydration system for producing fuel ethanol; operating the coarse distillation tower, the rectifying tower A, the dealdehyding tower, the water washing tower, the rectifying tower B, the methanol tower, the industrial alcohol tower and the light wine tower for producing special-grade edible alcohol; and operating the coarse distillation tower, the rectifying tower A, the dealdehyding tower, the water washing tower, the rectifying tower B, the methanol tower, the industrial alcohol tower, the light wine tower and the molecular sieve dehydration system for co-production of special-grade edible alcohol and fuel ethanol. The product structure can be flexibly adjusted according to market requirements, production is switched or special-grade edible alcohol and fuel ethanol are co-produced, energy efficiency can be reasonably optimized and matched, impurity removal is facilitated, and the quality of the product is guaranteed.

Description

technical field [0001] The invention relates to the technical field of alcohol production, in particular to a production device and a process for co-producing fuel ethanol and super edible alcohol. Background technique [0002] Fermented alcohol is a renewable and important basic raw material and product. According to different functions and purity requirements, it can be divided into edible alcohol and fuel ethanol products. Fuel ethanol products are mainly used as fuels and raw materials for chemical production; edible alcohol products are mainly used for brewing beverages and raw materials for chemical production. [0003] However, the existing fuel ethanol and special-grade edible alcohol devices and processes can only produce specific products alone. The fuel ethanol device can only produce fuel ethanol. Although the special-grade edible alcohol device can produce fuel ethanol, the process energy consumption is high. The quality is poor, and the two products cannot be ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/80C07C29/76C07C31/08C12H6/02
CPCC07C29/80C07C29/76C12H6/02C07C31/08
Inventor 周宏才姜新春谭晓东陆树浩黎进英张正会文兵杨丽丽
Owner GUANGDONG ZHONGKE TIANYUAN NEW ENERGY SCI & TECH
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