Ib txoj kev ntawm kev siv oxygen los yog peroxide ua cov pib ua kom polymerize ethylene rau hauv qis ntom polyethylene. Ethylene nkag rau reactor tom qab ob-theem kev nyem, qhov uas nws tau polymerized rau hauv polyethylene hauv siab ntawm 100-300 MPa, qhov kub ntawm 200-300 ° C thiab kev ua ntawm tus pib. Cov tshuaj tiv thaiv hluav taws xob cais tawm hauv qab qhov txo qis, kom qhov tsis haum ntawm ethylene yog rov ua dua thiab yaj tas. Tom qab ntxiv cov yas ntxiv, cov polyethylene yog extruded thiab pelletized.
Muaj ob hom polymerization reactors: tubular reactor (raj ntev txog 2000 m) thiab tank reactor. Kev hloov pauv ib leeg ntawm cov txheej txheem tubular yog 20% rau 34%, thiab ib leeg-ib leeg ib xyoos ntau lawm muaj peev xwm yog 100 kt. Kev hloov kho ib leeg ntawm tus txheej txheem kais tawm yog 20% -25%, thiab ib leeg-ib xyoos ntau lawm muaj peev xwm yog 180 kt.