Propylene okusayidi ndi mtundu wa zinthu zofunika mankhwala zopangira ndi intermediates, amene chimagwiritsidwa ntchito popanga polyether polyols, polyester polyols, polyurethane, poliyesitala, plasticizers, surfactants ndi mafakitale ena.Pakali pano, kupanga propylene okusayidi makamaka ogaŵikana mitundu itatu: kaphatikizidwe mankhwala, puloteni chothandizira synthesis ndi kwachilengedwenso nayonso mphamvu.Njira zitatuzi zili ndi mawonekedwe awoawo komanso kuchuluka kwa ntchito.Mu pepala ili, tiwona momwe zinthu zilili pano komanso chitukuko chaukadaulo wopanga propylene oxide, makamaka mawonekedwe ndi ubwino wa mitundu itatu ya njira zopangira, ndikuyerekeza momwe zinthu zilili ku China.

Choyamba, njira yopangira mankhwala a propylene oxide ndi njira yachikhalidwe, yomwe ili ndi ubwino waukadaulo wokhwima, njira yosavuta komanso yotsika mtengo.Ili ndi mbiri yakale komanso chiyembekezo chogwiritsa ntchito.Komanso, mankhwala kaphatikizidwe njira angagwiritsidwenso ntchito kupanga zinthu zina zofunika mankhwala zopangira ndi intermediates, monga ethylene okusayidi, butylene okusayidi ndi styrene okusayidi.Komabe, njirayi ilinso ndi zovuta zina.Mwachitsanzo, chothandizira chomwe chimagwiritsidwa ntchito pokonzekera nthawi zambiri chimakhala chosasunthika komanso chowononga, chomwe chidzawononga zipangizo ndi kuwononga chilengedwe.Kuonjezera apo, ntchito yopangira ntchito iyenera kuwononga mphamvu zambiri ndi madzi, zomwe zidzawonjezera mtengo wopangira.Choncho, njirayi si yoyenera kupanga zazikulu ku China.

Kachiwiri, njira ya enzyme catalytic synthesis ndi njira yatsopano yomwe yapangidwa m'zaka zaposachedwa.Njirayi imagwiritsa ntchito ma enzyme monga chothandizira kusintha propylene kukhala propylene oxide.Njirayi ili ndi ubwino wambiri.Mwachitsanzo, njira imeneyi ali mkulu kutembenuka mlingo ndi selectivity wa enzyme chothandizira;imakhala ndi kuipitsidwa kochepa komanso kugwiritsa ntchito mphamvu zochepa;ikhoza kuchitidwa pansi pazikhalidwe zofatsa;imatha kupanganso zinthu zina zofunika za mankhwala ndi zopangira zapakatikati mwa kusintha zopangira.Komanso, njira imeneyi amagwiritsa biodegradable sanali poizoni mankhwala monga zochita zosungunulira kapena zosungunulira-free zinthu ntchito zisathe ndi kuchepetsa chilengedwe.Ngakhale kuti njira imeneyi ili ndi ubwino wambiri, pali mavuto ena amene akufunika kuthetsedwa.Mwachitsanzo, mtengo wa enzyme catalyst ndi wokwera, womwe udzawonjezera mtengo wopangira;chothandizira enzyme n'zosavuta kuti inactivated kapena deactivated mu anachita ndondomeko;kuonjezera apo, njira iyi ikadali mu labotale pakali pano.Choncho, njirayi ikufunika kufufuza ndi chitukuko chowonjezereka kuti athetse mavutowa asanayambe kugwiritsidwa ntchito popanga mafakitale.

Pomaliza, njira ya biological fermentation ndi njira yatsopano yomwe yakhazikitsidwa m'zaka zaposachedwa.Njirayi imagwiritsa ntchito tizilombo toyambitsa matenda monga chothandizira kutembenuza propylene kukhala propylene oxide.Njirayi ili ndi ubwino wambiri.Mwachitsanzo, njirayi imatha kugwiritsa ntchito zinthu zongowonjezedwanso monga zinyalala zaulimi ngati zopangira;imakhala ndi kuipitsidwa kochepa komanso kugwiritsa ntchito mphamvu zochepa;ikhoza kuchitidwa pansi pazikhalidwe zofatsa;imatha kupanganso zinthu zina zofunika za mankhwala komanso zopangira pakati posintha tizilombo toyambitsa matenda.Komanso, njira imeneyi amagwiritsa biodegradable sanali poizoni mankhwala monga zochita zosungunulira kapena zosungunulira-free zinthu ntchito zisathe ndi kuchepetsa chilengedwe.Ngakhale kuti njira imeneyi ili ndi ubwino wambiri, pali mavuto ena amene akufunika kuthetsedwa.Mwachitsanzo, chothandizira cha microorganism chiyenera kusankhidwa ndikuwunika;kutembenuka mlingo ndi selectivity wa tizilombo chothandizira ndi otsika;iyenera kuphunziridwanso momwe mungayang'anire magawo a ndondomeko kuti muwonetsetse kuti ntchito yokhazikika komanso yopangidwa bwino kwambiri;Njirayi imafunikiranso kafukufuku wochulukirapo ndi chitukuko isanayambe kugwiritsidwa ntchito pagawo lopanga mafakitale.

Pomaliza, ngakhale njira yophatikizira mankhwala ili ndi mbiri yakale komanso chiyembekezo chogwiritsa ntchito kwambiri, ili ndi zovuta zina monga kuyipitsa komanso kugwiritsa ntchito mphamvu kwambiri.Enzyme catalytic synthesis method ndi biological fermentation njira ndi njira zatsopano zowononga pang'ono komanso kugwiritsa ntchito mphamvu pang'ono, koma zimafunikirabe kafukufuku wambiri ndi chitukuko zisanagwiritsidwe ntchito popanga mafakitale.Kuonjezera apo, kuti tikwaniritse kupanga kwakukulu kwa propylene oxide ku China m'tsogolomu, tiyenera kulimbikitsa ndalama za R & D m'njirazi kuti athe kukhala ndi chuma chabwino komanso chiyembekezo chogwiritsa ntchito ntchito isanakwaniritsidwe.