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Ethanol fermentation and separation system using solar energy to heat

A technology for ethanol fermentation and separation system, which is applied in specific-purpose bioreactor/fermenter, separation/purification of hydroxyl compounds, bioreactor/fermenter combination, etc., can solve the problem of increasing distillation difficulty, energy consumption, ethanol concentration Low, difficult to deal with, etc.

Inactive Publication Date: 2014-11-05
辽宁省能源研究所有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the pre-processing of crop fiber raw materials is difficult, the concentration of ethanol after fermentation is low, which greatly increases the difficulty of subsequent distillation and energy consumption.

Method used

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  • Ethanol fermentation and separation system using solar energy to heat

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Embodiment 1

[0008] Below in conjunction with accompanying drawing, the present invention will be further described;

[0009] The system of the invention comprises an ethanol fermentation reaction tank, a heat storage tank, a condenser, an ethanol storage tank, a centrifuge and a circulating air pump. The ethanol fermentation reaction tank is rectangular, with a bottom area of ​​30 square meters and a height of 1 meter. The sugar solution with a volume of 15 cubic meters and a mass fraction of 10% is injected into the ethanol fermentation reaction tank to ensure that the air inlet and the air outlet are all above the liquid surface of the sugar solution, and the liquid yeast with a volume of 0.5 cubic meters is added to carry out the fermentation reaction. Solar collector panels collect solar energy and store heat in a 5 cubic meter hot water storage tank. The heat storage tank maintains the temperature of the ethanol fermentation reaction tank at 35°C through indirect heating of the coil...

Embodiment 2

[0011] The ethanol fermentation reaction tank is cylindrical, with a bottom area of ​​20 square meters and a height of 2 meters. A volume of 20 cubic meters of sugar solution with a mass fraction of 20% is poured into the ethanol fermentation reaction tank to ensure that the air inlet and the air outlet are all above the liquid surface of the sugar solution, and a volume of 1 cubic meter of liquid yeast is added to carry out the fermentation reaction. Solar collector panels collect solar energy and store heat in a 5 cubic meter hot water storage tank. The heat storage tank maintains the temperature of the ethanol fermentation reaction tank at 35°C through indirect heating of the coil. The flow rate of the circulating air pump is 6 cubic meters per minute, and the ethanol gas volatilized in the fermentation broth is quickly taken away from the ethanol fermentation reaction tank. The ethanol gas taken away is condensed into liquid through the condenser and enters the ethanol sto...

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Abstract

The invention relates to an ethanol fermentation and separation system using solar energy to heat, and relates to an ethanol fermentation and separation device, and specifically relates to a system that preliminarily separates and purifies ethanol by using the solar energy as a heat source for ethanol fermentation, accompanied by a circulation air pump and a condenser. The system provided by the invention comprises a solar energy heat-collecting panel, an ethanol fermentation reaction tank, etc. When the system is in use, a sugar solution is pumped into the ethanol fermentation reaction tank and yeast is added for reaction. A reaction temperature can be kept between 30 DEG C and 40 DEG C by using the solar energy heat-collecting panel and a thermal storage water tank. An ethanol gas is taken away from the ethanol fermentation reaction tank, and then enters an ethanol storage tank after being condensed into a liquid through the condenser, to complete fermentation and separation. Since the system comprises the solar energy heat-collecting panel, fermentation reaction rate and production efficiency are increased; and since the system comprises the circulation air pump and the condenser, fermentation reaction of a feed liquid is thorough, yield is increased, and output concentration of ethanol is increased. Difficulty and energy consumption of subsequent distillation are reduced; and the problems existing in production equipment and process are overcome.

Description

technical field [0001] The invention relates to an ethanol fermentation and separation device, specifically a system that uses solar energy as a heat source for ethanol fermentation, is equipped with a circulating air pump and a condenser, and initially separates and purifies ethanol during fermentation. Background technique [0002] Cellulosic ethanol is a clean, efficient, and environmentally friendly alternative fuel, which has been gradually recognized by people and has become an important direction for the development of low-carbon fuels in the future. The main raw materials for the production of cellulosic ethanol are agricultural and forestry wastes such as straw, rice straw, bagasse, etc. The sources of raw materials are very extensive. The products produced can not only improve the energy performance of our country, but also are low-carbon and environmentally friendly, which is conducive to the sustainable development of our country's economy. But at present, the e...

Claims

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Application Information

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IPC IPC(8): C12M1/00C12M1/02C07C29/76C07C31/08
CPCC12M21/12C12M23/08C12M29/24C12M41/18C12M43/00C12M43/02Y02P20/50
Inventor 张大雷曹焱鑫寇巍闫昌国王晓明邵丽杰任永志
Owner 辽宁省能源研究所有限公司
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