Process for preparing ethanol by solid fermentation and distillation of sweet sorghum stalks

A sweet sorghum straw, solid fermentation technology, applied in the directions of fermentation, chemical instruments and methods, hydroxyl compound preparation, etc., can solve the problems of complex process, operator injury, environmental pollution, etc., and achieves simple process, no environmental pollution, and process safety. high sex effect

Inactive Publication Date: 2005-11-23
郎咏梅 +1
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Problems solved by technology

[0003] The purpose of the present invention is to provide a method for producing ethanol by solid fermentation and distillation of sweet sorg

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Embodiment Construction

[0011] Processing step of the present invention is as follows:

[0012] 1. Harvest the mature sweet sorghum stalks, crush them into 2cm pieces with a pulverizer, and remove the broken leaf impurities mixed in them for later use.

[0013] 2. Preparation of yeast activation solution: the dosage of alcohol yeast is 1‰~1.5‰ of sweet sorghum stalk pulverized material (as a weight ratio. It depends on the production area and temperature. The temperature in the south is relatively high, so the dosage of yeast can be appropriately reduced; in the north If the weather is colder, the amount of yeast can be appropriately increased), and the amount of sugar used is 0-4‰ of the weight of the straw material. Use 10 kg of warm water at 38°C (the water consumption of 1000 kg of sweet sorghum stalks), add the above-mentioned white sugar and alcohol yeast, and stir well, let stand for rehydration for 20 minutes; then add 40 kg of warm water at 38°C to make the total The water consumption is 50...

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Abstract

The invention discloses a process for preparing ethanol by solid fermentation and distillation of sweet sorghum stalks, which comprises, (1) comminuting the harvested mature sweet Chinese sorghum stalk into small fragments with comminuting machines, (2) charging yeast activating liquid, (3) loading the fermentation raw material into fermentation tank and sealing, (4) distilling the fermented raw material in distillation flask.

Description

technical field [0001] The invention relates to a method for producing ethanol by using sweet sorghum stalks, in particular to a method for producing ethanol by using sweet sorghum stalks for solid fermentation and distillation. Background technique [0002] Sweet sorghum is a sugar-rich clothing crop, and its stalk juice has a Brix of 12% to 24%. Using biocatalytic fermentation technology, the sugar in the stem is converted into ethanol. Ethanol and related by-products are obtained by distillation of the fermentation feedstock. The process steps in the prior art are firstly crushing crop straws, and then undergoing sulfuric acid acidification treatment and lime milk neutralization and hydrolysis to obtain sugar liquid; the obtained sugar liquid is then fermented and distilled to obtain ethanol. Its main disadvantage is that sulfuric acid and lime need to be used in the process, which is not only complicated in process, but also pollutes the environment and easily causes h...

Claims

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Application Information

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IPC IPC(8): C12P7/10
CPCY02E50/16Y02E50/10
Inventor 王集臣
Owner 郎咏梅
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