Fuel ethanol production equipment and method

A technology for fuel ethanol and a production method, which is applied to biochemical equipment and methods, fuels, biofuels, etc., can solve problems such as high energy consumption and material consumption, water pollution, etc., and achieves increasing feed temperature, reducing steam consumption, and saving circulating cooling. water effect

Inactive Publication Date: 2008-04-09
TIANJIN UNIV
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Problems solved by technology

The traditional ethanol production process has problems such as high en

Method used

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  • Fuel ethanol production equipment and method
  • Fuel ethanol production equipment and method

Examples

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Effect test

Embodiment 1

[0044] Using cassava as raw material, the production method shown in Figure 1, Figure 2, Figure 3 and Figure 4 is used to produce fuel ethanol.

[0045] The cassava raw material with a starch content of 68%, with a processing capacity of 7.5 tons per hour, is cleaned and decontaminated and then pulverized. The pulverized raw material is added with mixing water to make a slurry and sent to the slurry tank. The mixing water is from CO 2 The washing water from the washing tower, the waste water from the recovery tower bottom of the rectification dehydration unit, and the condensed water from the waste liquid treatment unit add up to 17.7 tons / hour. In the slurry tank, the steam generated by the flash cooling of the liquefied mash is preheated. The preheated slurry is sent to the pre-liquefaction tank, and auxiliary materials such as amylase are added quantitatively for pre-liquefaction operation, and the pre-liquefaction temperature is controlled by steam to 60°C.

[0046] After...

Embodiment 2

[0058] Using corn as raw material, the production process shown in Figure 1, Figure 2, Figure 3 and Figure 4 is used to produce fuel ethanol.

[0059] The corn raw material with a starch content of 63%, with a processing capacity of 9.3 tons per hour, is cleaned and decontaminated and then pulverized. The pulverized raw material is made into a slurry with mixing water and sent to the slurry tank. The mixing water is from CO 2 The washing water from the washing tower, the waste water from the recovery tower bottom of the rectification dehydration unit, and the condensed water from the waste liquid treatment unit add up to 27 tons / hour. In the slurry tank, the steam generated by the flash cooling of the liquefied mash is preheated. The preheated slurry is sent to the pre-liquefaction tank, and auxiliary materials such as amylase are added to carry out the pre-liquefaction operation, and the pre-liquefaction temperature is controlled by steam to be 65°C.

[0060] After the mater...

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Abstract

The invention relates to a novel equipment and a method of ethanol fuel production. The water resource in a preparation unit of liquefied wort is the washing water in a CO2 washing tower. A recovery tower pot collects waste water and a portion of liquor condensate by vaporing when waste water is dealt with to send to a mixing machine of the preparation unit of liquefied wort. And the consumption of fresh water is zero. The process of rectification and dehydration adopts technology of multieffect thermal coupling rectification. Only when the recovery tower pot uses fresh vapor to heat, the energy consumption of the process of rectification and dehydration is reduced largely. The waste wort solution produced by the alcohol production process which is dealt with by the device for pneumatic drying, multieffect evaporation of clear liquid, being anaerobic and oxygen consumption of the vapored condensate liquor and purifying by using ultrafiltration membrane etc, can be recovered with the valuable product. The reasonable treatment plan realizes zero discharge of technique waste water when in the ethanol fuel production.

Description

technical field [0001] The invention relates to a new equipment and method for fuel ethanol production, which can effectively reduce material consumption and energy consumption in the fuel ethanol production process, and improve the market competitiveness of fuel ethanol as an alternative fuel. Background technique [0002] Due to the shortage of global oil resources and the rapid development of bio-enzyme technology, the production of fuel ethanol by fermentation to replace gasoline is becoming more and more popular. The annual output of fuel ethanol by fermentation in the United States has reached more than 10 million tons. my country's work to promote the use of ethanol gasoline for vehicles has been fully launched. In April 2001, two national standards of "denatured fuel ethanol" and "ethanol gasoline for vehicles" were promulgated, and the amount of ethanol added in ethanol gasoline for vehicles was 10%. At present, my country has fully promoted it in Heilongjiang, Jil...

Claims

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Application Information

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IPC IPC(8): C12M1/00C12P7/06C10L1/02
CPCY02E50/17C12M21/12C12M29/26C12M43/02Y02E50/10
Inventor 张敏华吕惠生董秀芹李永辉张志强钱胜华刘成刘宗章
Owner TIANJIN UNIV
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