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4118843
El petroli
Mind Map by
aitorcour
, updated more than 1 year ago
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Created by
aitorcour
about 5 years ago
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Description
Origen, processos a una refineria i productes obtinguts
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tecnologia
petroli
1r batxillerat
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Resource summary
El petroli
1 Origen
1.1 Va iniciar la seva formació fa uns 600 milions d'anys
1.1.1 Causat per l'acumulació de microorganismes
1.1.1.1 Descomposició en dues etapes
1.1.1.1.1 1a per bacteris aerobis
1.1.1.1.2 2a per bacteris anaerobis
1.1.1.2 factors de pressió i temperatura
2 Processos d'una refineria de petroli
2.1 Destil·lació fraccionada
2.1.1 Escalfar el cru fins l'evaporació
2.1.1.1 Refredar-lo progressivament
2.1.1.1.1 Obtenir fraccions condensades separades en funció del seu punt d'ebullició
2.1.1.1.1.1 Les fraccions gasoses a 80 graus són el gas butà, propà i algunes benzines
2.1.1.1.1.2 La fracció que resta líquida a 350 graus s'extreu
2.1.1.1.1.2.1 S'escalfa a 400 graus i es torna a destil·lar
2.1.1.1.1.2.1.1 Els productes s'obtenen a diferents altures
2.1.1.1.1.2.1.1.1 Gasoil
2.1.1.1.1.2.1.1.2 Naftes
2.1.1.1.1.2.1.1.3 Querosè
2.1.1.1.1.2.1.1.4 Fuel
2.1.1.1.1.2.1.1.5 Olis i asfalt
2.2 Craqueig
2.2.1 Descompondre els hidrocarburs més pesants per obtenir-ne més lleugers
2.2.1.1 Són processos importants perque permeten obtindre el producte de més demanda al mercat
2.3 Polimerització
Annotations:
Procés químicament contrari al craqueig
2.3.1 Els hidrocarburs més lleugers es converteixen en compostos més pesants
2.3.1.1
2.4 Reformació
2.4.1 S'utilitza per millorar les característiques de les benzines
2.4.1.1 Consisteix en eliminar les impureses químiques
3 Productes obtinguts
3.1 Directament
3.1.1 Gas propà i butà utilitzats com a combustible
3.1.2 Èter de petroli, dissolvent
3.1.3 Benzina, querosè, gasoil, combustibles
3.1.4 Olis lubricants, utilitzats com a lubricants
3.2 Tractats en la indústria petroquímica
3.2.1 Plàstics
3.2.2 Fibres sintètiques, com el niló i el polièster
3.2.3 Detergents
3.2.4 Cautxú sintètic, per la fabricació de pneumatics
3.2.5 Explosius i productes farmacèutics
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