Tsis ntev los no, pab pawg kws tshawb fawb Wang Hui thiab tus kws tshaj lij laus laus Luo Hu ntawm Shanghai Lub Tsev Haujlwm rau Kev Tshawb Fawb Txog Kev Tshawb Fawb ntawm Suav Academy ntawm Kev Tshawb Fawb tau ua qhov tseem ceeb hauv kev tshawb fawb txog kev txhim kho cov khoom pov tseg los ua naphtha. Los ntawm molecular sieve confinement thiab series catalysis, lawv muaj peev xwm degrade pov tseg plastics mus rau hauv naphtha, uas yuav siv tau rau recycling polyethylene, realizing kaw-voj siv plastics, thiab txo tag nrho lub zog cons.umption thiab carbon emissions.
Xaiv hydrocracking ntawm polyethylene rau naphtha
Lub ntiaj teb txhua xyoo tso zis ntawm cov yas ntau tshaj 300 lab tons, uash tsis tsuas yog muab kev yooj yim rau lub neej, tab sis kuj tsim cov khoom pov tseg ntau ntawm cov yas. Tam sim no, muaj ob txoj hauv kev rov ua dua cov pov tseg yas, rov ua dua lub cev thiab rov ua dua tshiab. Tus nqi ntawm cov khoom tau txais los ntawm lub cev rov ua dua tshiab yog qhov tsawg, thiab kev siv tshuaj lom neeg rov ua dua tshiab, raws li txoj hauv kev kom paub txog lub zog rov ua dua tshiab ntawm cov khoom siv pov tseg, tau nyiam cov neeg nyiam. Txawm li cas los xij, cov kev txhawb nqa catalysts siv muaj teeb meem xws li kev kub ntxhov siab, lub sij hawm ntev, thiab kev faib khoom dav. cov khoom siv roj tseem ua rau CO2 emissions.
Raws li qhov no, pab pawg tshawb fawb tau tsim kho lub tshuab catalytic los xaiv hydrocrack polyethylene rau hauv naphtha, uas qhov kev xaiv ntawm C5-C9 alkanes siab li 96.8 feem pua, nrog rau cov yam ntxwv ntawm cov tshuaj tiv thaiv me me thiab lub sijhawm luv luv. Tsis tas li ntawd, ethylene monomer tuaj yeem tsim los ntawm naphtha los ntawm chav tawg, thiaj li tsim tau ib lub polyethylene recycling thiab kaw-loop utilization system. Lub catalytic system kuj tsim nyog rau catalytic degradation ntawm high-density polyethylene, polypropylene thiab lwm yam pov tseg plastics. Tsis tas li ntawd, pab pawg tshawb fawb kuj tau npaj lub tswv yim ntawm kev siv yas yas los tsim kev lag luam ncig. Piv nrog rau cov txheej txheem roj av ib txwm siv hluavtaws, cov txheej txheem ncig tuaj yeem txuag tau 15 feem pua ntawm lub zog thiab txo cov pa hluav taws xob hauv tsev los ntawm 30 feem pua.
