UBUHANZI
UBWIZA N'UBUZIMA
UBUKORIKORI
UMUCO N'AMATEKA
IMYIDAGADURO
IBIDUKIKIJE
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UBWUBATSI BUSUBIRA INYUMA
UBUMENYI
SIPORO
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IBYAMBARWA
HDPE Pellets: Ethylene Polymerised in a Fluidised Bed
High-density polyethylene is made at low pressure on a Ziegler catalyst (a titanium halide with an aluminium compound). In the gas-phase process, ethylene flows up through a fluidised bed of fine catalyst at 85–100 °C and 20 bar and grows into polymer powder, which is melted and cut into pellets.
The picture: our diagram of the bed reactor and extruder.
Hejuru
Continuous
Amabwiriza
1
1
Polymerise in a fluidised bed
Polymerise in a fluidised bed
Feed fine catalyst into the bed reactor and blow ethylene up through it at 85–100 °C and 20 bar. The polymer grows on the catalyst grains.
Ibikoresho by'iyi ntambwe:
Etilene1 tIbikoresho bikenewe:
Igikoresho cy'ibice bitemba (fluidised-bed)
Igitera-vuba cya Ziegler-Natta (TiCl4 kuri MgCl2)
Igikandamiza gazi2
2
Take off the powder
Take off the powder
Draw the polyethylene powder off the bed; compress the unreacted ethylene and send it round again.
Ibikoresho bikenewe:
Igikoresho cy'ibice bitemba (fluidised-bed)Igikandamiza gazi3
3
Pelletise
Pelletise
Melt the powder in the extruder and cut the strand into pellets.
Ibikoresho bikenewe:
Imashini isohora pulasitiki4
4
Ethylene gas per kilogram of polymer
Ethylene gas per kilogram of polymer
Gupakira ikaye ya Jupyter…
Ibikoresho bikenewe
4- Umwanya
- Umwanya
Iki gishushanyo gikora
Blueprint zijyanye
Izi blueprint zisangira ubumenyi — uburyo, ibikoresho cyangwa amahame
CC0 Umurenge rusange
Iyi blueprint yasohowe munsi ya CC0. Ushobora gukoporora, guhindura, gukwirakwiza no gukoresha nta kwemererwa.
Shyigikira Umuremyi ugura ibicuruzwa binyuze muri Blueprint ye Komisiyo y'Umuremyi byashyizweho n'Abacuruzi, cyangwa kora verisiyo nshya y'iyi Blueprint ukayinjiza nk'isano muri Blueprint yawe kugira ngo musangire inyungu.