The maindasitiri kugadzirwa ethylene glycol

Ethylene glycol - iri zvishoma viscous, jikichira, odorless zvokunwa. Zviri zvikuru soluble mu alcohols, mvura, acetone uye turpentine. Ethylene glycol ndiyo hwaro motokari antifreeze neimba sezvo lowers pachikumbaridzo nokuda nechando nemvura aqueous mhinduro. An dzinonakidza ndechokuti kunyange nechando mvura haina akarapa, akatendeuka kupinda chando, uye akarurama kunova nokusazvibata. Uyezve, aqueous zvingaitwa kuti ethylene glycol hakuiti chokuwedzera uye saka regai kukuvadza sepombi uye redhiyeta iri motokari.

Izvi zvinhu ane refu chaizvo hygroscopic, i.e. absorbs mvura kubva kwezvakatipoteredza (mhepo, siyana magasi). The maindasitiri kugadzirwa ethylene hwakagadzwa panguva zhinji namakemikari miti. Zvinofanira kurangarirwa kuti nefuma chepfu, kunyange ine hwema kuravira. Naizvozvo, kubata pamwe zvakakodzera kutora matanho okudzivirira. Yegwara zvinhu hazvina kukwirira toxicity uye anogona kunganzi ngozi pautano chete panguva yavo inhalation refu. Ethylene glycol - mumwe mafuta kubatana. High kuwanda pamwando mudenga vari putika, asi pane musanganiswa nemvura, ethylene glycol anorasikirwa ehupfumi izvi.

kunyoresa

Ethylene glycol inoshandiswa muminda siyana uye maindasitiri: motokari, kemikari, Aerospace, Whitehead Textile, magetsi, mafuta uye gasi. Chimwe chezvinhu zvinokosha mafomu izvi zvinhu ndiyo kugadzirwa coolants uye antifreeze. Nokuda mukuru kudiwa pamusoro maindasitiri kugadzirwa ethylene rava kwazvo. chigadzirwa ichi chinogona kushandiswa senzvimbo solvent kuti pendi zvigadzirwa.

Nzira kugadzirira ethylene glycol

Nzira achigadzirira nefuma chaizvo chaizvo, asi kuti maindasitiri kugadzirwa hakukodzeri vose. Chimwe chezvinhu dzakakurumbira nzira iri kugadzirira ethylene glycol nokushandisa yokupedzisira oxidation kubudikidza okisijeni pamberi yesirivha anowedzera, zvichiteverwa tevera hydration. Zvisinei, kudiwa ndiyo imwezve nzira. Kugadzirira ethylene glycol kubudikidza hydrolysis kuti ethylene. Muzviitiko zvacho zvose, kuti hydration zvakaitwa kuti ethylene oxide anogadzirwa pamberi catalysts uye tembiricha yakakwirira. Mumabhuku, panewo nzira umo pakugadzirira ethylene glycol riri kuitwa ndikurumidze mvura, formaldehyde uye carbon monoxide. Glycolic asidhi kuwanikwa mune yokutanga danho iri pasi esterification kupa Esteri. Zvadaro, zvinonzi hydrogenated kuti ethylene glycol. nzira iyi inoshandiswa muUnited States.

The zvichiguma chigadzirwa iri kwazvo yakachena, nokuti kunyange zviduku zvakawanda nechitarisiko utachiona kwakakanganisa kunokanganisa ehupfumi ayo. Somuenzaniso, pamberi ethylene glycol ari Zvinoumba zvinhu zvakadai diethylene glycol uye polyglycols, ayo chafariz kucharamba yekudyidzana ipfupi. Naizvozvo, yepamusoro chigadzirwa kubva muzana zvokunze kwokubatana zvinofanira kushoma. Izvi ndezvechokwadi kunyanya chlorinated yeimwe uye aldehydes. Misa chikamu chikuru mukomboni anofanira kanenge 99,5%.