-
AlessandroTesla.
User deleted
Vi posto un po' di notizie recuperate sulla produzione di perossido di idrogeno e pure il suo COSTO rimasto invariato negli anni. Se ben ho capito il sistema più comune di produzione non è l' elettrolisi ma l'idrogenazione di un vettore (e successiva ossidazione, vedi su http://www.cheresources.com/h2o2.shtml) che viene recuperato a fine processo. Di fatto il perossido di idrogeno consente di immagazzinare l'idrogeno in un fluido molto più manipolabile, anche se la vera energia non è data dall' idrogeno ma dalla perdita della molecola di ossigeno, una reazione chimicamente esotermica; l'utilizzo nella motoristica è in concentrazione del 90%.
Le notizie vengono dal sito:
http://www.the-innovation-group.com/ChemPr...%20Peroxide.htm
In italiano ovviamente non esiste che meno di niente...
Magari mi date una mano sul potere calorifico di un litro di H2O2?
Non inquina nel suo utilizzo e potrebbe risolvere molti problemi visto il suo costo comunque in linea con l' olio di colza, l'etanolo, etc...
DEMAND
2001: 915 million pounds; 2002: 935 million pounds; 2006: 970 million pounds, projected. Demand equals production plus imports (2001: 148 million pounds; 2002: 134 million pounds) less exports (2001: 111 million pounds; 2002: 113 million pounds).
GROWTH
Historical (1997 - 2002): 2.8 percent per year; future: 3.8 percent per year through 2006.
PRICE
Historical (1997 - 2002): High, $0.67 per pound, list, 100 percent basis, tank cars, works, freight equalized; low, $0.67, same basis. Current: $0.67 same basis. Current contract: $0.48 to $0.53 same basis.
USES
Wood pulp bleaching, 56 percent; water treatment and reclamation, 12 percent; textile bleaching, 9 percent; organic chemicals (peroxygen compounds, epoxidized oils, fatty amine oxides), 9 percent; inorganic chemicals (laundry products, sodium percarbonate), 4 percent; miscellaneous including electronics and mining; 10 percent.
STRENGTH
The principal driver of hydrogen peroxide demand is its increased use in the bleaching of wood pulp used for papermaking. Both chemical (fine papers) and mechanical (newsprint) pulps are bleached with hydrogen peroxide. Hydrogen peroxide is also used for bleaching of pulp reclaimed from recycled paper, an increasingly significant market. Together, all uses in this market sector account for 56 percent of hydrogen peroxide consumption.
Pulp and paper production is sensitive to the general economic conditions and in 2000 to 2001, this sector experienced a significant decline. But now with the country’s economy turned around, pulp and paper production is expected to have a record year in 2004. Moreover, hydrogen peroxide is making inroads with partially displacing more expensive bleaching agents, such as chlorine dioxide.
WEAKNESS
Until 2001, sodium perborate consumed more than one third of the peroxide used by the inorganic chemicals sector, and was the sector’s largest application. This has since drastically declined to almost nothing because of environmental concerns about boron (used in the production of sodium perborate). Part of the hydrogen peroxide demand that was eliminated with sodium perborate, however, was picked up by increased manufacture of sodium percarbonate. This is a substitute for perborate’s laundry products (bleach) applications.
OUTLOOK
The improving economy and plant rationalizations have resulted in an industry operating rate of near 95 percent in first quarter 2004. The market tightness, coupled with increased energy costs on the supply side suggests higher prices are in the works for early 2004, following the recent successful price increases of the prior year. No new capacity is being built, but there remains idled capacity in the marketplace that could be brought on-line. Demand growth for the forecast period is estimated at 3.8 percent annually..
MOTORE AD ACQUA OSSIGENATAInquinamento zero e grande efficienza |