New technology for making ethanol from straw breaks through cost barrier
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7 tons of straw can produce 1 ton of ethanol, and the cost per ton is 1,000 yuan lower than that of grain ethanol. A biotechnology company in Shandong inherited the demonstration project of enzymatic hydrolysis and fermentation of straw fuel ethanol with an annual output of 3,000 tons in 2006. Through independent innovation, it has now overcome the bottleneck problem that affects production costs and has broken through the economic barrier of straw ethanol.: Every 7 tons of straw can produce 1 ton of ethanol, and the cost per ton is 4,500 yuan, which is 1,000 yuan lower than using grain to produce ethanol. At present, the company is working to expand its annual fuel ethanol production capacity to 10,000 tons, and is also actively preparing for the preliminary work of the "annual output of 60,000 tons of straw fermentation fuel ethanol project". It is estimated that after the completion of the 60,000-ton project, it can consume 420,000 tons of straw annually, produce 60,000 tons of fuel ethanol, 10,000 tons of xylose, 4,000 tons of xylooligosaccharides, and 60,000 tons of organic compound fertilizer, with an annual new output value of 600 million yuan. The "New Technology of Straw Enzymatic Fermentation Fuel Ethanol and Its Industrialization Demonstration Project" jointly constructed by the company and the Institute of Process Engineering of the Chinese Academy of Sciences passed the acceptance of the expert group of the Chinese Academy of Sciences in 2006. This demonstration project uses new solid-state fermentation technology and pollution-free steam explosion technology with independent intellectual property rights. The system is efficient, clean, safe and feasible, and provides a basis for scaling up the industrial production of 10,000-ton straw enzymatic fermentation fuel ethanol. This project has built the largest 100m3 solid-state pure fermentation bioreactor at home and abroad, as well as a large-scale pollution-free steam explosion treatment system for orange straw. It has proposed a new triple coupling technology of straw solid-phase enzymatic hydrolysis, simultaneous fermentation, adsorption and separation, and successfully developed a 110 m3 straw solid-phase enzymatic large-scale mirror hydrolysis, simultaneous fermentation, adsorption and separation triple coupling reaction device. The products produced are market competitive, providing a production technology route in line with my country's national conditions for the industrial production of straw enzymatic fermentation fuel ethanol, and are of great significance to my country's strategy for sustainable development of renewable energy. Industry experts believe that based on my country's national conditions, fuel ethanol will mainly rely on agricultural waste in the long run. The technology jointly developed by the Institute of Process Technology of the Chinese Academy of Sciences and the company is a major innovation that "does not compete with people for land or food" and opens up new space for the production of fuel ethanol. It is reported that this technology has 35 patents, 15 of which are international patents. This post was last edited by Bing Bingwu at 2008-4-23 22:52 ]
Not considered advanced, Tianguan has already produced 1 ton of ethanol from 6 tons of straw, which is generally called cellulosic ethanol.
Maybe it's to create momentum? In the past few years, straw gasification power generation was so prosperous, but what about now?
Oops, haha, the three major challenges and the breakthrough cost barrier were both posted by the original poster. Isn’t this contradictory in itself? I don’t know what the original poster’s opinion is?
Many of them are just lies, and we don’t know the details. I hope we can make breakthroughs and benefit mankind.
It would be great if it were true, but it's a pity that so much straw is burned every year
The main purpose is to discuss with you and let everyone see what many people have to say. My opinion is: the three major challenges are: straw ethanol technology still needs time. You are a thoughtful person, thank you. Let us work together to make Haichuan better and more popular, okay?
In any case, the future energy will mainly be bioenergy, and research on the utilization of agricultural and sideline products such as straw is very necessary. In fact, this project should be * * projects that support research, * * Funding for research is worthy of taxpayers.
Every 7 tons of straw can produce 1 ton of ethanol, and the cost per ton is 4,500 yuan, which is 1,000 yuan lower than using grain to produce ethanol. This is still not an economic advantage! Even compared with grain, there is still a lot of room for economic by-products in producing ethanol from grain. Moreover, straw itself is not suitable for large installation scale. I'm still not optimistic about its prospects. Recycling of straw is one way. Personally, I think straw gas production is more suitable for the characteristics of this raw material.
Satellite, another satellite. The Seventh God is going to heaven again! ! !
We have conducted experiments before and estimated conservatively that it takes 9 tons of straw to produce one ton of alcohol. That statement is an exaggeration and a lie.* * of subsidies. It is difficult to achieve in industrial production. This post was last edited by yzhms on 2009-1-17 13:55 ]