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Polymer Gasoline: Propylene from Cracked Gas Polymerised over Phosphoric Acid (Gulf, US 3,071,535)
The propylene in a refinery's cracked gas can be joined into gasoline-sized molecules over a phosphoric acid catalyst. The result is an olefinic polymer gasoline of high research octane but high sensitivity, so Gulf blends it into regular grade only.
Result (Gulf's example, barrels per day): from 4,851 of C3 fractions, 1,645 of polymer gasoline; the propane and unreacted gas, 1,552 as fuel-oil equivalent, go to fuel.
Source: Condrasky & Glazier, US 3,071,535 (Gulf, filed 1959). Not given: temperature, pressure, reactor design. Liquefied gases under pressure: fire risk. Picture drawn by Youblob.
Mtaalamu
1 day
Maagizo
1
1
Collect the C3 streams
Collect the C3 streams
Gather the olefinic C3 fractions of the refinery: in Gulf's example 4,230 barrels a day from the catalytic cracker and 621 from the coker.
Vifaa kwa hatua hii:
Sehemu ya propani-propileni4851 parts by volumeZana zinazohitajika:
Mtungi wa gesi yenye shinikizo
Pampu ya kuhamishia2
2
Polymerise over phosphoric acid
Polymerise over phosphoric acid
Contact the C3 stream with a polymerisation catalyst such as phosphoric acid, which joins the propylene into olefinic polymer gasoline. Gulf gives no temperature or pressure. Ours: a solid phosphoric acid catalyst in a pressure reactor.
Zana zinazohitajika:
Kichocheo cha asidi ya fosforiki ngumu
Riakta ya shinikizo
Kipima Shinikizo
Kipima joto kali3
3
Separate the polymer gasoline from the gas
Separate the polymer gasoline from the gas
Separate the liquid polymer gasoline (1,645) from the C3 gas left over (1,552 as fuel-oil equivalent), which is used as fuel. Ours: a fractionating still.
Zana zinazohitajika:
Chombo cha kunereka kwa sehemu
Tangi la kuhifadhi mafuta4
4
Keep it for regular grade
Keep it for regular grade
Because its octane sensitivity is rather high, the polymer gasoline is blended into regular-grade petrol, not premium.
Zana zinazohitajika:
Tangi la kuhifadhi mafutaVifaa
1- 4851 parts by volumeKishikilia Nafasi
Zana Zinazohitajika
8- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
- Kishikilia Nafasi
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