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Alcohol distillation process

A process and alcohol technology, applied in the field of alcohol distillation process, can solve the problems of poor environmental protection economic benefits, large gaps and high energy consumption, and achieve the effects of reducing comprehensive energy consumption, saving steam required for heating, and reducing environmental pollution

Inactive Publication Date: 2011-06-01
国润金华(北京)国际能源投资有限公司 +1
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  • Abstract
  • Description
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Problems solved by technology

[0002] The development of my country's alcohol industry has a large gap compared with foreign developed countries in terms of alcohol distillation technology. Because my country's alcohol industry has low requirements for energy consumption, product quality, and process technology in the early stage of alcohol development, my country's alcohol industry generally suffers from high energy consumption, Disadvantages such as high labor intensity, poor environmental protection and economic benefits
For example, the early distillation process used atmospheric distillation, and the energy consumption was seriously high (for example, about 3.8 tons of steam per ton of alcohol in three-tower atmospheric distillation)

Method used

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Embodiment Construction

[0012] Such as figure 1 Shown, a kind of alcohol distillation process of the present invention, it is to adopt the full negative pressure rectification technology that reduces the operating pressure and temperature of distillation system, multiple volatile and non-volatile substances in the alcohol fermentation mature mash are passed through thick tower, fine tower, Methanol column for separation. Its specific process steps are as follows:

[0013] First of all, the fermented mature mash from the fermentation section is heated to 40°C-55°C in the first stage through a spiral plate heat exchanger (the waste water is discharged from the refining tower), and the fermented mature mash with a temperature of 40°C-55°C enters the second stage. The secondary spiral plate heat exchanger (using the waste liquid discharged from the crude tower) is reheated to 60°C-75°C, and the fermented and mature mash is sent to the crude distillation tower for distillation at a temperature of 60°C-75...

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Abstract

The invention discloses an alcohol distillation process. The process is characterized in that: multiple volatile and nonvolatile substances in alcoholic fermented mash are separated through a crude tower, a refining tower and a methanol tower by adopting a full negative pressure rectification technology of reducing the operating pressure and temperature of a distillation system. In the full negative pressure distillation system, the process not only saves the steam required for heating, but also saves the cooling water for condensing alcoholic steam; and negative pressure distillation energy is adopted.

Description

technical field [0001] The invention relates to the technical field of alcohol industrial production, in particular to an alcohol distillation process. Background technique [0002] The development of my country's alcohol industry has a large gap compared with foreign developed countries in terms of alcohol distillation technology. Because my country's alcohol industry has low requirements for energy consumption, product quality, and process technology in the early stage of alcohol development, my country's alcohol industry generally suffers from high energy consumption, It has disadvantages such as high labor intensity, poor environmental protection and economic benefits. For example, the early distillation process used atmospheric distillation, and the energy consumption was seriously high (for example, about 3.8 tons of steam per ton of alcohol was needed for three-tower atmospheric distillation). Contents of the invention [0003] The purpose of the present invention i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12G3/12C12H6/02
Inventor 张骢蓝王凤成林水华林良俊林世昌张午阳
Owner 国润金华(北京)国际能源投资有限公司
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