Method for producing fuel ethanol by jerusalem artichoke as raw material

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

Inactive Publication Date: 2013-04-24
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) Pulverize Jerusalem artichoke and pass through a 60-mesh sieve; (2) Evenly mix Jerusalem artichoke powder in water at 30°C with a solid-liquid ratio of 1:2.0, and then add 10% activated strains (Kluyveromyces marxii 40%, rhizopus 10%, saccharomyces 50%.) carry out fermentation, then add 0.2% ammonium sulfate, fermentation temperature is 32 ℃, fermentation time 84h, the fuel ethanol fermented liquid that makes ethanol content is 0.44g / g, More than 99% fuel ethanol can be obtained after dehydration by column-type fine distillation.

example 2

[0015] (1) Pulverize Jerusalem artichoke and pass through a 60-mesh sieve; (2) Evenly mix Jerusalem artichoke powder in water at 32°C, the ratio of solid to liquid is 1:2.2, and then add 10% activated strains (Kluyveromyces marxii 40%, rhizopus 10%, saccharomyces 50%.) carry out fermentation, then add 0.2% ammonium sulfate, fermentation temperature is 34 ℃, fermentation time 84h, the obtained ethanol content is the fuel ethanol fermentation liquid of 0.50g / g, More than 99% fuel ethanol can be obtained after dehydration by column type fine distillation.

example 3

[0017] (1) Pulverize Jerusalem artichoke and pass through a 60-mesh sieve; (2) Mix Jerusalem artichoke powder evenly in 35°C water with a solid-liquid ratio of 1:3.0, and then add 10% activated strains (wherein Kluyveromyces marxii 40%, rhizopus 10%, saccharomyces 50%.) carry out fermentation, then add 0.2% ammonium sulfate, fermentation temperature is 32 ℃, fermentation time 84h, the fuel ethanol fermented liquid that makes ethanol content is 0.48g / g, More than 99% fuel ethanol can be obtained after dehydration by column type fine distillation.

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PUM

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Abstract

The invention discloses a method for producing fuel ethanol by jerusalem artichoke as a raw material. The method comprises the following steps: (1) grinding the jerusalem artichoke, and screening the ground jerusalem artichoke through a 60 mesh sieve; (2) evenly mixing the jerusalem artichoke with water at a temperature of between 30 and 35 DEG C, wherein the ratio of material to water is 1:2.0-1:3.0; then, adding 10 percent of activated strains into the mixture, and adding 0.2 percent of ammonium sulfate into the mixture, adjusting temperature to between 32 and 34 DEG C; and sealing the mixture under a condition of adjusting the pH value of the mixture to 5.0 for 84 hours of synchronous diastatic fermentation; and (3) obtaining the fuel ethanol after distilling and dehydrating. The method selects the jerusalem artichoke as the raw material, has low production cost, simple processing, advanced technology, small equipment investment and easy operation, ensures that the fuel ethanol is not restricted by the yield and the cost of starch materials, and is advantageous to promote popularization and 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 Jerusalem artichoke as a raw material. 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. Ther...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12P7/10C12P39/00C12R1/845C12R1/865C12R1/645
CPCY02E50/16Y02E50/10
Inventor 高新成何俊超
Owner 海南环宇新能源有限公司
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