Cov txheej txheem ntau lawm ntawm PE yog los ntawm slurry lossis roj theem ua, thiab ob peb yog tsim los ntawm kev daws teeb meem theem. Tag nrho cov txheej txheem no yog exothermic cov tshuaj tiv thaiv nrog ethylene monomer, α-olefin monomer, catalyst system (tej zaum yuav muaj ntau tshaj ib qho kev sib xyaw) thiab ntau hom diluents. Hydrogen thiab qee cov catalysts yog siv los tswj qhov hnyav molecular. Lub slurry reactor feem ntau yog lub tank stirred los yog siv ntau lub voj voog reactor nyob rau hauv uas cov slurry tuaj yeem do hauv kev ncig. Thaum ethylene thiab comonomer (raws li xav tau) tuaj rau hauv kev sib cuag nrog cov catalyst, polyethylene hais yog tsim.
Tom qab tshem tawm cov diluent; polyethylene granules los yog hmoov granules yog qhuav thiab ntxiv nrog additives raws li ntau npaum li cas los tsim pellets. Cov kab ntau lawm niaj hnub nrog cov reactors loj nrog ntxaib-ntsia hlau extruders tuaj yeem tsim ntau tshaj 40,000 phaus PE ib teev. Txoj kev loj hlob ntawm cov catalysts tshiab pab txhawb kev txhim kho cov qib tshiab ntawm HDPE. Ob hom catalysts feem ntau siv yog Philips' chromium oxide-based catalysts thiab titanium compound-alkyl aluminium catalysts. HDPE tsim los ntawm Phillips catalyst muaj qhov nruab nrab-dav qhov hnyav molecular faib; titanium-alkyl aluminium catalyst muaj qhov nqaim molecular hnyav faib. Cov catalyst siv nyob rau hauv zus tau tej cov nqaim MDW polymers nyob rau hauv ib tug dual reactor kuj yuav siv tau los tsim MDW ntau qib. Piv txwv li, ob lub reactors uas tsim cov khoom hnyav molecular sib txawv tuaj yeem tsim bimodal molecular hnyav polymers uas muaj ntau yam ntawm cov khoom hnyav molecular faib.
