FiddeUBC skrev:
Blir det verkligen svart rök när man gör etanol?
Här utanför Kristianstad har vi ett bränneri som gör finsprit (drickbar etanol) åt Absolut i Åhus och det kommer aldrig någon svart rök ur skorstenen där inte. Nu görs iofs spriten på potatis men det borde väl inte vara så sort skillnad i tillverkningsproccesen?
Jag hittade en annan bild över samma fabrik med den svarta röken.
Costa Pinto ethanol plant.
Kul, jag hittade en till bild från samma fabriken komplett med "rök":
Här
http://www.carlist.com/autonews/2006/autonews_291.html kan man se och läsa mer om fabriken denna gång av någon sam faktiskt har varit inne i fabriken i motsats till fotografen Karl Melander och har tagit reda på fakta, t ex
Citat:
Sugar cane is cut seven months out of the year, starting around April. A mechanical claw pulls the sugar cane out of the bins and onto a conveyer belt. They use over seventy different types of sugar cane, depending on the soil and the time of year. There are 400 to 600 trucks a day, 24 hours a day, coming into the plants during the seven months. The grinding begins; Cosan grinds, on average, 24,000 tons of sugar cane a day. Through a series of crushing, separating fibers, scratching and pressing the juice is released and sent to the distilleries to make sugar.
The residue used to be thrown away and in the United States, where we use corn to make ethanol, it still is thrown away. But Cosan has an old fashioned name for a new product; bagasse. Bagasse, the residue from sugar cane, is sent to boilers where it is heated to steam. The steam creates electrical energy. Currently, Costa Pinto produces 9.2 megawatts of power. In two years Cosan will change the boilers to achieve higher efficiency of about 60 megawatts of power. They estimate they will need 15 megawatts of power, so by 2009 they expect to sell 45 megawatts. According to the Deputy Secretary for the Environment of São Paulo State, Suani Teixeira Coelho, there is a twenty year contract by the State that guarantees the purchase of electricity, up to 3,000 megawatts, to business that are upgrading to sell electricity to the grid.
But we are only into our first twenty processes at the Costa Pinto plant. The juice is still steaming and separating into molasses and sugar. As sugar comes spewing out another conveyer belt it is bagged into bags that have Da Barra S.A. written in red on them. On average, Cosan will bag 41,500 bags of sugar a day. Globally, Cosan is the third largest producer of sugar and the second largest exporter of sugar. Locally, they are the largest producer of sugar. But they don’ t let that molasses go to waste either.
The sweet smell of molasses picks up as I turn the corner. Another whiff gives me the other smell; yeast. A plop of brownish white foam hits my head and I realize I am standing under the largest mug of beer in the world. A giddiness explodes as the group realizes we could just stand there and get drunk. In Brazil they have a saying, drink the best, burn the rest. We are watching alcohol being made and we are about to see the product we have anxiously awaited, ethanol.
Cosan says they are the largest ethanol producer in Brazil and the second largest in the world, having sold 824.7 million liters during fiscal year 2005. They also claim to be the largest exporter of ethanol in the world, having exported 298.3 million liters during fiscal year 2005. On our way from Indaiatuba we saw Alcool (ethanol) being sold for R$1.39 (Reals) and was told that was somewhere around 60 cents a liter. If those 825 million liters that Cosan sold were at 60 cents a liter that is $USD49.5 million that Brazil did not spend on foreign imported oil. And that is from just one ethanol producing group and it doesn’ t include what Cosan sold overseas. Cosan says they are the second largest producer of ethanol, globally and second largest retailer of ethanol locally.
/Aryan
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