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New method for preparing fuel ethanol by using banana and plantain

A fuel ethanol and banana technology, applied in the field of fuel ethanol preparation, can solve the problems of high production cost, intolerance to storage and perishability, and occupying a lot of cultivated land, so as to improve the utilization rate of waste, increase the rate of land output, and increase the number of farmers income effect

Active Publication Date: 2009-09-16
张永北
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although the above-mentioned method has certain feasibility, there are many limitations such as high production cost, low yield, or poor production stability in these production methods due to the following shortcomings in the raw materials used: 1. sweet sorghum It is a high-yielding crop with a short growth cycle, but its harvest season is too concentrated. In the process of large-scale industrialization, especially in the warm, humid and typhoon-prone southern regions of my country, it is not resistant to storage and is easy to rot.
Therefore, so far, the preparation of fuel ethanol from sweet sorghum has not been able to form a large industry in my country after years of hard work; ② cassava and sweet potato are starchy raw materials, and the main production areas are in the south of my country, but the yield per mu is not high in most areas , long growth cycle, occupying a lot of cultivated land, high planting cost, complicated process, energy consumption, water consumption, and serious pollution; ③Sugar cane and sugar beet are important raw materials for edible sugar in my country, and edible sugar is a material in short supply in our country. In order to ensure the output of edible sugar , my country does not encourage the use of sugar raw materials to produce fuel ethanol

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Gather banana corm, peel, pulverize and dry in the sun, store, get dry powder 30kg, measure moisture to be 14%, sugar content and starch are 44.2%. Add 80kg of water to make pulp, cook for 1 hour, add α-amylase, hydrolyze for more than 10 hours, filter to remove 32 kg of slag with a water content of 45%, obtain 67 kg of sugar juice with a sugar content of 25%, add alcoholic yeast, and ferment for more than 36 hours, directly Distilled to obtain 8.29kg of 80% alcohol, and dehydrated to obtain 6.1kg of 99.8% absolute ethanol.

Embodiment 2

[0027] Collect fresh banana bulbs, peel them, measure the water content to be 89.5%, take 100kg, make a pulp, cook for 1 hour, add α-amylase, hydrolyze for more than 10 hours, filter out 11.2 kg of slag with a water content of 45%, and obtain a sugar content of 9.1% 60kg of sugar juice, added alcoholic yeast, fermented for more than 36 hours, directly distilled to obtain 3.2kg of 80% alcohol, and dehydrated to obtain 2.54kg of 99.8% fuel ethanol.

Embodiment 3

[0029] Collect fresh plantain bulbs, peel them, measure the water content to be 87.5%, take 100kg, make a pulp, cook for 1 hour, add α-amylase, hydrolyze for more than 10 hours, filter and remove 13.3 kg of slag with a water content of 45%, and obtain sugar content of 8.7%. 62.76 kg of sugar juice was added with alcohol yeast, fermented for more than 36 hours, directly distilled to obtain 3.41 kg of 80% alcohol, and 2.54 kg of 99.8% fuel ethanol was obtained by dehydration.

[0030] According to the above example, the sugar content in the dry powder of banana and plantain bulb is close to 45%, and 203 kilograms of fuel ethanol can be produced for every ton of dry powder (moisture is 14%), and 4.9 tons of dry powder are needed for every ton of fuel ethanol. The water content of fresh bananas and plantain bulbs is close to 90%, and most of them are water. Each ton of corms can produce 25.4 kg of ethanol after hydrolysis with enzymes. About 39.37 tons of raw materials are needed...

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Abstract

The invention provides a method for preparing fuel ethanol which uses banana or plantain as raw material for obtaining fuel ethanol after normal fermentation process. The method can expand raw material resource amount of fuel ethanol with a large scale, reduce producing cost of the fuel ethanol, increase producing efficiency and bring much better social and economic efficiency.

Description

technical field [0001] The invention relates to a method for preparing fuel ethanol, in particular to a method for preparing fuel ethanol by using non-grain crop bananas and plantains as raw materials. Background technique [0002] In order to ensure that the development of the bioenergy industry does not compete with humans and animals for food, and does not compete with food for land, so as to ensure national food security, my country encourages the use of non-food crop raw materials to prepare fuel ethanol. However, considering the fact that our country has a lot of people and little land, the ideal fuel ethanol production method is to choose high-yielding crops with large biomass as raw materials. The existing fuel ethanol production methods mainly use non-grain crops such as sweet sorghum, cassava, sweet potato, sugar cane, and sugar beet as raw materials, and produce ethanol through appropriate fermentation treatment. Although the above-mentioned method has certain fe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C12P7/10C10L1/02C12R1/645
CPCY02E50/16Y02E50/10
Inventor 张永北冀春花陈兵罗靖
Owner 张永北