Propylene oxide imhando yemakemikari akakosha ezvigadzirwa uye epakati, ayo anoshandiswa zvakanyanya mukugadzirwa kwepolyether polyols, polyester polyols, polyurethane, polyester, plasticizers, surfactants uye mamwe maindasitiri. Parizvino, kugadzirwa kwepropylene oxide kunonyanya kukamurwa kuva marudzi matatu: makemikari synthesis, enzyme catalytic synthesis uye biological fermentation. Nzira nhatu idzi dzine maitiro adzo uye chiyero chekushandisa. Mubepa rino, isu tichaongorora mamiriro azvino uye maitiro ekuvandudza tekinoroji yekugadzira propylene oxide, kunyanya maitiro uye zvakanakira emhando nhatu dzenzira dzekugadzira, uye kuenzanisa mamiriro eChina.

Chekutanga pane zvese, iyo kemikari synthesis nzira yepropylene oxide inzira yechinyakare, ine zvakanakira tekinoroji yakakura, nzira iri nyore uye mutengo wakaderera. Iine nhoroondo refu uye tarisiro yakakura yekushandisa. Uye zvakare, makemikari synthesis nzira inogona zvakare kushandiswa kugadzira mamwe akakosha makemikari zvinhu uye zvepakati, senge ethylene oxide, butylene oxide uye styrene oxide. Zvisinei, nzira iyi inewo zvimwe zvayakaipira. Semuenzaniso, iyo catalyst inoshandiswa mukuita iyi inowanzo vhiringika uye inopisa, izvo zvinokonzeresa kukuvadzwa kwemidziyo uye kusvibiswa kwezvakatipoteredza. Mukuwedzera, maitiro ekugadzira anoda kushandisa simba rakawanda uye zviwanikwa zvemvura, izvo zvichawedzera mutengo wekugadzira. Naizvozvo, nzira iyi haina kukodzera kugadzirwa kukuru muChina.

Kechipiri, enzyme catalytic synthesis nzira inzira nyowani yakagadzirwa mumakore achangopfuura. Iyi nzira inoshandisa maenzayimu sezvinokonzeresa kushandura propylene kuita propylene oxide. Iyi nzira ine zvakawanda zvakanakira. Semuenzaniso, iyi nzira ine yakanyanya kutendeuka chiyero uye selectivity ye enzyme catalyst; ine kusvibiswa kwakaderera uye kushandiswa kwesimba shoma; inogona kuitwa pasi pemamiriro ekuita zvishoma; inogonawo kugadzira mamwe makemikari anokosha ezvigadzirwa uye epakati nekuchinja macatalysts. Pamusoro pezvo, iyi nzira inoshandisa biodegradable isiri-chepfu makomisheni sezvinonyungudutsa zvinonyungudutsa kana zvinonyungudutsa-isina mamiriro ekushanda kwakasimba nekuderedzwa kwezvakatipoteredza. Kunyange zvazvo nzira iyi ine zvakawanda zvakanakira, pachine mamwe matambudziko anoda kugadziriswa. Semuenzaniso, mutengo we enzyme catalyst wakakwira, izvo zvichawedzera mutengo wekugadzira; iyo enzyme catalyst iri nyore kuve inactivated kana kudzima mukuita maitiro; uyezve, nzira iyi ichiri murabhoritari padanho razvino. Naizvozvo, nzira iyi inoda kumwe kutsvagisa nekusimudzira kugadzirisa matambudziko aya isati yashandiswa mukugadzirwa kwemaindasitiri.

Chekupedzisira, biological fermentation nzira zvakare inzira nyowani yakagadziridzwa mumakore achangopfuura. Iyi nzira inoshandisa tupukanana sezvinokonzeresa kushandura propylene kuita propylene oxide. Iyi nzira ine zvakawanda zvakanakira. Semuenzaniso, nzira iyi inogona kushandisa zviwanikwa zvinogona kudzokororwa semarara ekurima semidziyo; ine kusvibiswa kwakaderera uye kushandiswa kwesimba shoma; inogona kuitwa pasi pemamiriro ekuita zvishoma; inogonawo kugadzira mamwe akakosha makemikari zvinhu uye zvepakati nekuchinja tupukanana. Pamusoro pezvo, iyi nzira inoshandisa biodegradable isiri-chepfu makomisheni sezvinonyungudutsa zvinonyungudutsa kana zvinonyungudutsa-isina mamiriro ekushanda kwakasimba nekuderedzwa kwezvakatipoteredza. Kunyange zvazvo nzira iyi ine zvakawanda zvakanakira, pachine mamwe matambudziko anoda kugadziriswa. Semuenzaniso, iyo microorganism catalyst inoda kusarudzwa uye kuongororwa; chiyero chekushandura uye kusarudzwa kwe microorganism catalyst yakaderera; inoda kuenderera mberi ichidzidzwa maitiro ekudzora maparamita ekuita kuti ive nechokwadi chekushanda kwakagadzikana uye nepamusoro pekugadzira kugadzirwa; nzira iyi inodawo kumwe kutsvagisa uye budiriro isati yashandiswa padanho rekugadzira maindasitiri.

Mukupedzisa, kunyangwe makemikari synthesis nzira ine nhoroondo refu uye yakakura tarisiro yekushandisa, ine mamwe matambudziko akadai sekusvibiswa uye yakanyanya kushandiswa kwesimba. Enzyme catalytic synthesis nzira uye biological fermentation nzira inzira nyowani dzine kusvibiswa kwakaderera uye kushoma kwesimba rekushandisa, asi ivo vachiri kuda tsvakiridzo nebudiriro isati yashandiswa padanho rekugadzira maindasitiri. Pamusoro pezvo, kuitira kuti tiwane kugadzirwa kwakakura kwepropylene oxide muChina mune ramangwana, tinofanira kusimbisa R&D investimendi munzira idzi kuitira kuti dzive nehunyanzvi hwehupfumi hwehupfumi uye tarisiro yekushandiswa kusati kwaitwa kugadzirwa kwakakura.