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Method for producing fuel ethanol by using acorns as raw materials

A technology of fuel ethanol and acorns, which is applied in the field of fuel ethanol production using acorns as raw materials, which can solve the problems of weak ethanol tolerance, no economic value, unsuitable for fermentation, etc., avoid high-temperature cooking, simple composition, and reduce The effect of production costs

Inactive Publication Date: 2010-03-31
海南环宇新能源有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After comparison: the one-step process is simple, but due to the weak tolerance of the bacteria to ethanol, it is not suitable for fermentation alone
The final yield of ethanol in the two-step method is generally low and has little economic value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0013] (1) Process acorns into acorn starch by wet method; (2) Mix acorn starch evenly in water at 30°C, the ratio of solid to liquid is 1:2.0, and then add 10% activated bacteria (wherein Max Kluyver Saccharomycetes 40%, Rhizopus 10%, Saccharomyces 50%.) carry out fermentation, then add 0.2% ammonium sulfate, fermentation temperature is 32 ℃, fermentation time 84h, the obtained ethanol content is the fuel ethanol fermentation of 0.44g / g After dehydration by column-type fine distillation, more than 99% fuel ethanol can be obtained.

example 2

[0015] (1) Wet process acorns into acorn starch; (2) Mix acorn starch evenly in 32°C water with a solid-liquid ratio of 1:2.2, and then add 10% activated strains (Kluyveromyces marx Bacteria 40%, Rhizopus 10%, Saccharomyces 50%.) for fermentation, then add 0.2% ammonium sulfate, the fermentation temperature is 34°C, and the fermentation time is 84h, to obtain a fuel ethanol fermentation liquid with an ethanol content of 0.50g / g , more than 99% of fuel ethanol can be obtained after dehydration by column type fine distillation.

example 3

[0017] (1) Acorns are wet-processed into acorn starch; (2) Acorn starch is evenly mixed in 35°C water with a solid-liquid ratio of 1:3.0, and then 10% activated strains (Kluyveromyces marxis) are added Bacteria 40%, Rhizopus 10%, Saccharomyces 50%.) for fermentation, then add 0.2% ammonium sulfate, the fermentation temperature is 32°C, and the fermentation time is 84h, and the fuel ethanol fermentation liquid with ethanol content of 0.48g / g is obtained , more than 99% of fuel ethanol can be obtained after dehydration by column type fine distillation.

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Abstract

The invention discloses a method for producing fuel ethanol by using acorns as raw materials, which comprises the following steps: 1. processing the acorns into acorn starch by a wet method; 2. uniformly mixing the acorn starch into water with the temperature of 30-35 DEG C in a material-water ratio of 1:2.0-1:3.0, then adding 10 percent of activated strains, then adding ammonium sulphate with the concentration of 0.2 percent, sealing at the temperature of 32-34 DEG C and under the condition of adjusting a pH value to 5.0, and carrying out synchronous saccharification and fermentation for 84 hours; and 3. obtaining the fuel ethanol after distillation and dehydration. In the invention, the acorn starch is selected as the raw material, and the method has low production cost, simple processing, advanced process technology, less equipment investment and easy operation. The invention enables the fuel ethanol not to be limited by the yield and the price of the starchy raw material, and is beneficial to promoting the popularization and the application of the fuel ethanol.

Description

technical field [0001] The invention relates to a method for producing fuel ethanol, in particular to a method for producing fuel ethanol using acorns as raw materials. Background technique [0002] With the increasingly serious energy problem, using fuel ethanol as an alternative energy source has become a hot topic today. The development of fuel ethanol will help to ensure my country's energy security, improve the ecological environment, but also broaden the field of agricultural services and open up new ways for farmers to increase their income. Therefore, it is of great practical and strategic significance to further develop fuel ethanol to build a new national energy security system and promote the harmonious construction of a new socialist countryside. [0003] At present, the production of fuel ethanol mainly uses grains as raw materials, such as corn starch, etc., which are limited by factors such as high cost and serious environmental pollution. Therefore, it is u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P39/00C12P7/06C12R1/645C12R1/865C12R1/845
CPCY02E50/17Y02E50/10
Inventor 高新成何俊超
Owner 海南环宇新能源有限公司
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