The mafakitale ya ethylene glycol

Ethylene glycol - ndi pang'ono viscous, wochuluka, odorless madzi. Ndi kwambiri sungunuka alcohols, madzi, acetone ndi turpentine. Ethylene glycol ndi maziko zoletsa kuwuma magalimoto ndi banja chifukwa Sachita pakhomo kwa yozizira koopsa wa madzi ndi njira amadzimadzi. Choona chidwi kuti ngakhale madzi achisanu si anachiritsa, osatembenukira ku chisanu, monga amakhala lotayirira. Komanso njira amadzimadzi ethylene glycol si kukuza ndi Choncho musadzitame kuwononga machubu ndi rediyeta mu galimoto.

Nkhanizi ali kwambiri hygroscopic, i.e. zimatenga madzi chilengedwe (mpweya, mipweya osiyanasiyana). The mafakitale ya ethylene unakhazikitsidwa ku zomera mankhwala ambiri. Tiyenera kukumbukira kuti mankhwala ndi poizoni, ngakhale ali ndi zokoma kukoma. Choncho, mogwirizana ndi m'pofunika kusamala. Awiriawiri zinthu alibe kwambiri kawopsedwe ndi zingachititse ngozi thanzi yekha pa inhalation awo yaitali. Ethylene glycol - kugwirizana mafuta. Mkulu woipa nthunzi mu mlengalenga ndi kuphulika, koma osakaniza madzi, ethylene glycol wotaya katundu izi.

ntchito

Ethylene glycol ntchito zosiyanasiyana ndi mafakitale: magalimoto, mankhwala, Azamlengalenga, nsalu, magetsi, mafuta ndi gasi. Imodzi mwa ntchito zofunika kwambiri za nkhaniyi ndi kupanga coolants ndi zoletsa kuwuma. Chifukwa kufunika mkulu kwa mafakitale ya ethylene wakhala kwambiri. mankhwala angagwiritsidwe ntchito ngati zosungunulira mankhwala utoto.

Njira kukonzekera ethylene glycol

Ndondomeko yokonza mankhwala ndithu kwambiri, koma kwa mafakitale si woyenera onsewo. Imodzi mwa njira wotchuka kwambiri ndi yokonza ethylene glycol pogwiritsa ntchito makutidwe ndi okosijeni lapitali mpweya pamaso pa chothandizira siliva, kenako hydration wotsatira. Komabe, kufunika akadali ndi njira ina. Kukonzekera ethylene glycol ndi hydrolysis wa ethylene. Nthawi zonse, ndi hydration anachita wa okusayidi ethylene opangidwa pamaso pa catalysts ndi pa kutentha okwera. Mu mabuku, palinso njira imene yokonza ethylene glycol ikuchitika mwa kuchita madzi, formaldehyde ndi carbon monoxide. asidi Glycolic zopezera sitepe yoyamba pansi esterification kupereka Ester. Ndiye, izo hydrogenated kuti ethylene glycol. Njira imeneyi ntchito mu United States.

The mankhwala chifukwa ali bwinobwino oyera, chifukwa ngakhale zedi ka Mankhwala oipitsa kunja limakhudza anthu ake katundu. Mwachitsanzo, pamaso pa ethylene glycol mu zikuchokera zinthu monga diethylene glycol ndi polyglycols, bata ake matenthedwe ali kwambiri yafupika. Choncho apamwamba kuchuluka mankhwala kugwirizana kunja ayenera kuchepetsa. Zimenezi ndi zoona makamaka mankhwala chlorinated ndi aldehydes. Misa nusu ya pawiri zofunika ayenera kukhala osachepera 99,5%.