Energy-saving rectifying technique and apparatus for producing premium edible alcohol

A technology of edible alcohol and process method, which is applied in the direction of chemical instruments and methods, chemical industry, sustainable manufacturing/processing, etc. It can solve the problems of limited application fields and high impurity content of alcohol products, and achieve the effect of saving investment

Active Publication Date: 2017-03-08
NEW TIANJIN T & D
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its core is a three-effect differential pressure distillation process. Due to the lack of a water washing tower and a methanol removal tower in the entire process device, the alcohol product obtained by this method has a relatively high impurity content and can only be used for the production of fuel ethanol and ordinary food. Ethanol, limited field of application

Method used

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  • Energy-saving rectifying technique and apparatus for producing premium edible alcohol
  • Energy-saving rectifying technique and apparatus for producing premium edible alcohol
  • Energy-saving rectifying technique and apparatus for producing premium edible alcohol

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] Such as figure 1 As shown, the mature fermented mash 1 from the fermentation process first passes through the first rectifying tower condenser E101 and is preheated with the alcohol gas 22 at the top of the first rectifying tower T103, and then passes through the mash preheater E103 and uses the mash tower T101 tower kettle The waste mash 6 is preheated, and then enters the top of T101.

[0054] Fermentation tower T101 and water washing tower T102 are heat-integrated operation, wine gas 5 at the top of T101 enters the water washing tower T102 tower kettle reboiler E105 shell side, and condensed wine gas 5 feeds 8 into light wine tank V102. After the gas-liquid separation is completed in V102, the gas phase 9 and the liquid phase 10 respectively enter the middle part of the T102 tower.

[0055] The water washing tower T102 is thermally integrated with the first cleaning tower T103 and the methanol removal tower T104. The wine gas 12 on the top of the T102 tower is adva...

Embodiment 2

[0073] Such as figure 2 shown, it is figure 1 An evolutionary process method, relatively figure 1 The process methods shown differ as follows:

[0074] The gas phase 12 at the top of the washing tower is divided into two streams, one gas phase 54 is heated to the reboiler E106 of the T103 tower kettle, and the other gas phase 55 is heated to the reboiler E107 of the T104 tower kettle.

[0075] figure 1 The gas phase at the top of the demethanolization tower is not returned to the first refining tower, and the top of the demethanolization tower is equipped with auxiliary equipment such as a rectification section and a condenser. The top gas phase 49 of T104 is first condensed by the demethanol tower condenser E111, the non-condensed gas phase 50 is then condensed by the demethanol tower tail cooler E112, the non-condensable gas 51 goes to the vacuum system, and the E111 and E112 condensates enter the demethanol tower reflux tank V106. Part of the condensate of E112 is u...

Embodiment 3

[0077] Such as image 3 shown, it is figure 1 Another evolution of figure 1 The process methods shown differ as follows:

[0078] The first fine column and the methanol removal column are combined into one, adopting a partition column structure. image 3 The combination of the part above the middle T103 partition and the T103L on the left side of the lower partition is equivalent to figure 1 The first refined tower in image 3 The T103R part on the right side of the lower partition of the middle T103 is equivalent to figure 1 The demethanolization tower in. image 3 The evolution process method shown has less equipment, less floor space, and more simplified process flow.

[0079] The present invention can choose to add a recovery tower T106 on the basis of the five towers of the beer tower T101, the water washing tower T102, the first finishing tower T103, the methanol removing tower T104 and the second finishing tower T105. Aldehyde wine 18 from the top of the wate...

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Abstract

The invention relates to an energy-saving rectifying technique and apparatus for producing premium edible alcohol, in particular to an energy-saving apparatus and technique for producing premium edible alcohol from fermented liquid through a rectifying process. The whole rectifying apparatus at least comprises fermenting tower T101, washing tower T102, first rectifying tower T103, methanol removal tower T104, second rectifying tower T105 and their supporting devices. The defects of the prior art are overcome, a single-tower heating and four-effect thermal integration technique is employed in breakthrough way based on common multi-tower heating technology, and the technique is used in conjunction with other heat-exchange energy-saving techniques used in the system such that operational energy consumption is greatly lowered. The defects of the prior art are overcome, the operational energy consumption is decreased to 1.5 t of steam per ton of premium edible alcohol, which is 40% and below lower than that of currently intensively-used premium alcohol rectifying techniques, and the energy-saving rectifying technique and apparatus have significant practicality and great economic benefit and have a promising application prospect.

Description

technical field [0001] The invention relates to an energy-saving rectification process and device for producing high-grade edible alcohol, which is an energy-saving device and a process for producing high-grade edible alcohol from fermented mash through a rectification process. Background technique [0002] With the shortage of oil, coal and other energy resources, environmental pollution, and greenhouse effect becoming more and more serious, energy saving and consumption reduction in alcohol and other industries have become the key to the survival and competitiveness of enterprises, and have received more and more attention from all aspects. [0003] At present, the process of producing high-grade edible alcohol from fermented mash generally adopts the method of multi-tower rectification process. In the book "New Alcohol Technology" (published by the University Textbook Publishing Center of Beijing Chemical Industry Press in July 2004), a more detailed summary and analysis ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C29/74C07C29/80C07C31/08
CPCC07C29/74C07C29/80C07C31/08Y02P20/10
Inventor 蓝仁水黄贵明
Owner NEW TIANJIN T & D
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