Biodiesel Technology How is straw used?
Annual summer harvest and Qiudong during, always the straw such as many wheat, corn is in field burn, produced the smoke of a large number of dense, become the bottleneck issue of rural environmental protection not only, become the culprit of disaster and urban environment even.
According to concerning statistic, our country regards agriculture as big country, can generate many tons of 700 million straw every year, make “ use not big ” but the “ litter ” that must handle.
Current, industry of global fuel alcohol is being entered by upgrade to what be raw material with aricultural litter for raw material with crop replacement period, among them, cellulose alcohol by the world accepted develop way for fuel alcohol industry.
Current, home has many province to applying for to build cellulose alcohol to process a project, our country counts ton of crop straw every year to will have new use.
What is fuel alcohol?
Fuel alcohol serves as a kind of environment friendly but second birth the sources of energy, can increase common benzine octane number, reduce the discharge capacity of the material such as the carbon monoxide in car tail gas, hydrocarbon and grain content significantly, it is to look benzine amount is replaced on preexistence bound most, application is the widest but second birth the sources of energy. The alcohol gas that we use now added the benzine of fuel alcohol namely.
Promotion of national alcohol benzine leads tall of adviser of group specially invite to mirror guest to say, since 2004, our country is in Anhui, Henan, Heilongjiang, Jilin, Liaoning, Guangxi, Hubei, Shandong to wait for 11 provinces area and partial city in succession benzine of promotion application alcohol, car of annual sale E10 used alcohol gas 2014 23 million tons, 1/4 what occupy gross of countrywide motor gasoline about, had very main effect to improving atmosphere environment.
From 2000 to 2014, crop of global fuel alcohol year all grow more than 16% , crop achieved 73.38 million tons 2014. U.N. commissariat organization predicts global fuel alcohol produced per year a quantity to will achieve 120 million tons 2020. Current, the whole world already had 10 several countries to carry out fuel alcohol, before the United States, Brazil, China divides a whole world 3.
Promotion of national alcohol benzine leads tall of adviser of group specially invite to mirror guest to say, current, industry of global fuel alcohol is in a technology to upgrade the crucial period of replacement, mixing from the 1 acting technology that is raw material with commissariat, sugar cane with cassava, sweet the 1.5 acting technologies that the blame grain such as broomcorn is raw material, to with the aricultural litter 2 generation that are raw material the technology upgrades changeover. Among them, cellulose alcohol is direction of the world’s accepted development of fuel alcohol estate.
Qiao Yingbin: There are 3 things inside straw, cellulose, semi-cellulose, still have lignin. These 3 things inside, the means translate into that cellulose has method to pass hydrolysis 6 carbon candy, 6 carbon candy can ferment make it alcohol, semi-cellulose enzymatic solution turns 5 carbon into candy later, had alleged in the world now 5 carbon candy, 6 carbon candy can at the same time translate into alcohol, have this technology. #p#·ÖÒ³±êÌâ#e#
Because produce means extensive, resource utilization rate is low, problem of environment of zoology of our country agriculture is being highlighted increasingly. Our country is annual the litter that agricultural production produces is as high as 4 billion tons, but the many agriculture litter that includes cultivate birds excrement and urine, straw to be waited a moment inside, still get be handlinged effectively hard now. National hair changes appoint Jie Zhenhua of former vice director says, front of environment of our country country faces all-time pressure.
Jie Zhenhua: The characteristic that litter of our country agriculture produces is a quantity bedding face is wide, main sort is outstanding. According to statistic, the agricultural litter that produces every year makes an appointment with 4 billion tons, among them cultivate birds dung corrupt many tons 20, the straw of crop many tons 800 million. If these litter are used bad, waste resource not only, and pollute an environment.
It is with crop straw exemple, annual capacity of resources of our country straw is 820 million tons of above, did not use straw among them more than 200000000 tons, add available forestry litter resource measures more than 200000000 tons, aggregate make an appointment with more than 400000000 tons in all. These straw and forestry litter, no matter be,discard, can cause pollution of resources waste, air, serious when influence freeway passes through and fall since the plane even.
Society of economy of Anhui of university of Anhui finance and economics develops an academy to consider to discover, the contaminant such as PM2.5 of air of the Anhui province discharges spatio-temporal distributinging feature relatively apparent, especially the season that in Xia Qiu two season food harvests.
Anhui economy society develops academy dean Zhang Huiheng to teach:
Mixed 2014 the data 2013, we can see trend of change of PM2.5 pH indicator, annual June is more serious, november is a height, it is to contain seasonal, of sex of period of time.
Alcohol of development cellulose fuel can solve this one difficult problem effectively. As we have learned, 6 to 7 tons of straw can preparation alcohol of 1 ton of fuel, need to use only among them 1/3, can produce fuel alcohol 20 million tons of above, can reduce straw open air to burn, reduce PM2.5 discharge capacity to be every kilograms of straw directly 20 grams (20g/kg straw) . What the production that with forestry litter is fuel alcohol offerred straw to take is endless, use not the raw material origin of exhaust.
Current, the cellulose alcohol technology that raw material is with agriculture and forestry litter on the world gains headway ceaselessly, already one batch builds put into production and the industrialized plant that building. Technical divisions of alcohol of fuel of our country cellulose breaks through level in industrialization. As we have learned, in of company of grain Zhao Dong it is mature already to produce per year device of experiment of alcohol of 500 tons of celluloses to show move 10 years. At present in the couplet of alcohol of 50 thousand tons of cellulose that grain is advancing produces 6 million to cover with tiles biology pledges generate electricity the project already also was had commercialize operation condition. Promotion of national alcohol benzine leads tall of adviser of group specially invite to mirror guest: #p#·ÖÒ³±êÌâ#e#
Alcohol of our country cellulose has two yard, it is straw is changed into alcohol. A year of how many straw of our China, 900 million tons. Some of 900 million tons of straw wants papermaking, some to want to do feed, some to return cropland even, so if I should have 200 million tons straw to be able to make ethanol, 7 tons become a ton word, that also has 3 ten million ton alcohol.