Collaborazione
ARTE
BELLEZZA E BENESSERE
MESTIERE
CULTURA E STORIA
DIVERTIMENTO
AMBIENTE
CIBO E BEVANDE
INGEGNERIA INVERSA
SCIENZE
SPORT
TECNOLOGIA
INDOSSABILI
Normal Butane: the 0 °C Cut of the Lightest Gasoline, Distilled Twenty Times in the Cold (Mabery & Hudson 1897)
The lightest gasoline still holds butane, a gas that boils at about 0 °C. Distil it again and again through a condenser packed in a freezing mixture, and the butane gathers as a cut between -2 and 2 °C.
Result: 300 grams within -2 to 2 °C, specific gravity 0.6029 at 0 °C, vapour density 2.07 (2.01 calculated for butane). Very little came over below -10 °C.
Note: Mabery & Hudson named this cut isobutane. By the boiling points in Ipatieff & Pines, US 2,318,226 (normal butane +0.5 °C, isobutane -10.5 °C), a cut at 0 °C is normal butane, and it is built here as such.
Source: Mabery & Hudson, Proc. Amer. Acad. 32 (1897), pp. 101-111. Not given: the freezing mixture, how the butane was stored. Extremely flammable: no flame near. Picture drawn by Youblob.
Esperto
3 months
Istruzioni
1
1
Take the lightest gasoline
Take the lightest gasoline
Start from the most volatile gasoline you can get. Mabery & Hudson used 88° and 92° Baumé gasoline, the second distillate of Pennsylvania and Ohio naphtha, collected at the refinery in lots of 45 litres while the air was below 0 °F. 250 litres were worked in all.
Materiali per questo passaggio:
Benzina250 litriStrumenti necessari:
Pallone di distillazione in vetro2
2
Distil through a condenser in a freezing mixture
Distil through a condenser in a freezing mixture
Distil from a flask through a Warren condenser filled with a freezing mixture, and keep every receiver very cold to avoid loss. The paper does not give the mixture. Ours: crushed ice and salt.
Strumenti necessari:
Pallone di distillazione in vetro
Refrigerante a ricadere
Ghiaccio tritato
Sale
Termometro da laboratorio3
3
Let the lightest portions boil from room heat
Let the lightest portions boil from room heat
The portions from -20 to -10 °C boil from the heat of the surrounding air alone. Regulate them by cooling the still, not by heating it.
Strumenti necessari:
Pallone di distillazione in vetroGhiaccio tritatoSaleTermometro da laboratorio4
4
Redistil everything below 12 °C twenty times
Redistil everything below 12 °C twenty times
Collect in single-degree fractions and distil the portions below 12 °C again, twenty times over. By the twentieth run almost nothing stays between 5 and 20 °C, and the butane gathers between -2 and 2 °C.
Strumenti necessari:
Pallone di distillazione in vetroRefrigerante a ricadereGhiaccio tritatoSaleTermometro da laboratorio5
5
Keep the -2 to 2 °C cut
Keep the -2 to 2 °C cut
This is the butane: 300 grams in Mabery & Hudson's run, specific gravity 0.6029 at 0 °C. It boils at about 0 °C, so it must be kept cold or under pressure. Ours: condense it into a pressure gas cylinder.
Strumenti necessari:
Bombola di gas in pressioneTermometro da laboratorioQuesto progetto realizza
Blueprint correlati
Questi blueprint condividono conoscenze — tecniche, materiali o principi
CC0 Pubblico dominio
Questo progetto è rilasciato sotto CC0. Sei libero di copiare, modificare, distribuire e utilizzare quest'opera per qualsiasi scopo, senza chiedere permesso.
Supporta il Maker acquistando prodotti tramite il suo progetto dove guadagna una Commissione Maker stabilita dai venditori, oppure crea una nuova iterazione di questo progetto e includilo come collegamento nel tuo progetto per condividere i ricavi.