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Alcohol refining process for producing several products

A multi-product, alcohol technology, applied in the preparation of hydroxyl compounds, the preparation of organic compounds, the separation/purification of hydroxyl compounds, etc., can solve the problems of poor market adaptability, fewer product varieties, and excessive consumption, and achieve market competitiveness. The effect of improving the strength, accuracy and reliability of the equipment and reducing the operating cost

Inactive Publication Date: 2002-11-20
TIANJIN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there have been two serious problems: one is that oil is a non-renewable resource, and it is exhausted due to excessive exploitation and consumption; the other is that the use of oil as fuel and chemical raw materials has caused serious environmental damage. especially CO 2 greenhouse effect
[0009] In the current alcohol refining and dehydration production process, the production of anhydrous alcohol and edible alcohol is usually set up separately. The anhydrous alcohol refining and dehydration device can only be used to produce anhydrous alcohol products, and the edible alcohol refining and dehydration device can only be used to produce edible alcohol. Products, less varieties of products, poor market adaptability

Method used

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  • Alcohol refining process for producing several products
  • Alcohol refining process for producing several products

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] Embodiment 1: edible alcohol technological step:

[0020] As shown in Figure 1, the thermally coupled rectification and refining process of edible alcohol is mainly composed of unit equipment such as crude distillation tower, fine tower, dealdehyde tower, methanol removal tower and recovery tower.

[0021] (1) The raw material liquid with an ethanol content of 5-30% enters the crude distillation tower 25. After vapor-liquid mass transfer separation, the waste liquid is discharged from the tower kettle and sent to the outside of the device area for processing. Open the valve 1, and the crude wine produced at the top of the tower is sent to the dealdehyde tower 26. The decompression operation pressure of the column is -0.02~-0.08Mpa, and the heating medium of the reboiler 31 is the top steam of the finishing column 27 . The main task of the crude distillation tower is to remove most of the water, organic acid and heavy component impurities brought along with the fermenta...

Embodiment 2

[0026] Press this embodiment, select raw material to be the fermented mash that contains ethanol 12% (V), according to the technical process described above, by the multi-product alcohol refining device shown in Fig. 1, can obtain alcohol degree and be 96.5% (V), Premium edible alcohol products with methanol content ≤ 2ppm, fusel oil content ≤ 2ppm, and oxidation time ≥ 40min. Embodiment 2: dehydrated alcohol technological step:

[0027] As shown in Figure 1, the anhydrous alcohol refining and dehydration process is mainly composed of crude distillation tower, fine tower, adsorption tower and other operating units.

[0028](1) The raw material liquid with a content of 5-30% enters the crude distillation tower, and after vapor-liquid mass transfer separation, the waste liquid is discharged from the tower kettle and sent to the outside of the device area for treatment. Open valve 2, and the crude wine extracted from the top of the tower is sent to the fine tower. The decompres...

Embodiment 3

[0036] Embodiment 3: Edible alcohol and dehydrated alcohol produce process step simultaneously:

[0037] As shown in Figure 1: It is mainly composed of unit equipment such as crude distillation tower, fine tower, dealdehyde tower, methanol removal tower, recovery tower and adsorption tower.

[0038] (1) The raw material liquid with an ethanol content of 5-30% enters the crude distillation tower, and after vapor-liquid mass transfer separation, the waste liquid is discharged from the tower kettle and sent to the outside of the device area for processing. Close valve 2, and the crude wine produced at the top of the tower is sent to the dealdehyde tower. The decompression operation pressure of the column is 0-0.08Mpa, and the heating medium of the reboiler of the crude column is the top steam and the anhydrous alcohol product vapor of the fine column. The main task of the crude distillation tower is to remove most of the water, organic acid and heavy component impurities brought...

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Abstract

The anhydrous alcohol and edible alcohol simultaneous production equipment includes fractionating rectification tower, aldehyde-removing tower, refining tower, methanol-removing tower, recovering tower and adsorption tower, between all the towers there are valves and correspondent pipelines, also includes condenser, reboiling device and preheater. Said ivnention utilizes the raw material liquor containing 5-30 percent alcohol to produce required alcohol by means of opening required tower and controlling required valve according to the requirements. Said technological process can respectively and simultaneously produce various alcohols.

Description

technical field [0001] The invention relates to a method for preparing alcoholic organic substances, in particular to a multi-product alcohol refining process. Background technique [0002] Fermented alcohol is a renewable and important basic raw material and product. According to different usage functions and purity requirements, it is divided into edible alcohol and absolute alcohol products. Anhydrous alcohol is mainly used as fuel (also known as fuel alcohol), electronic component manufacturing, solvent for advanced cosmetics and chemical production raw materials. The specifications of edible alcohol products are mainly regular-grade alcohol, premium-grade alcohol and premium-grade alcohol, which are mainly used to make beverage alcohol. [0003] In the 20th century, petroleum was used as the main energy source and the raw material of petrochemicals. However, there have been two serious problems: one is that oil is a non-renewable resource, and it...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/74C07C29/80C07C31/08
Inventor 张敏华吕惠生董秀芹刘成刘宗章李永辉张志强钱胜华
Owner TIANJIN UNIV
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