Acetylene (C2H2)

Cov kev tsis sib xws

Acetylene, cov mis molecular C2H2, feem ntau hu ua cua thee lossis calcium carbide roj, yog cov khoom me tshaj plaws ntawm cov tshuaj alkyne. Acetylene yog cov roj tsis muaj xim, me ntsis lom thiab yooj yim hlawv nrog cov tshuaj loog tsis muaj zog thiab tiv thaiv kev oxidation hauv qab qhov kub thiab txias ib txwm muaj. Nws yaj me ntsis hauv dej, yaj hauv ethanol, benzene, thiab acetone. Acetylene ntshiab tsis muaj ntxhiab, tab sis acetylene kev lag luam muaj ntxhiab qej vim nws muaj cov khoom tsis huv xws li hydrogen sulfide thiab phosphine. Acetylene ntshiab yog cov roj tsis muaj xim thiab tsw qab. Nws tuaj yeem tawg ua kua thiab khov lossis hauv cov roj thiab qee qhov siab. Cov yam xws li cua sov, kev co, thiab hluav taws xob tuaj yeem ua rau muaj kev tawg, yog li nws tsis tuaj yeem ua kua hauv qab qhov siab. Khaws cia lossis thauj mus los. Ntawm 15 ° C thiab 1.5MPa, qhov solubility hauv acetone siab heev, nrog rau solubility ntawm 237g / L, yog li acetylene kev lag luam yog acetylene yaj hauv acetone, tseem hu ua acetylene yaj. Yog li ntawd, hauv kev lag luam, hauv cov thooj voos hlau uas muaj cov khoom siv porous xws li asbestos, acetylene raug nias rau hauv cov khoom siv porous tom qab nqus acetone rau kev khaws cia thiab kev thauj mus los. Acetylene roj tuaj yeem tsim qhov kub siab thaum hlawv. Qhov kub ntawm oxyacetylene nplaim taws tuaj yeem ncav cuag li 3200 ℃. Nws feem ntau siv rau kev txiav hlau xws li kev tsim nkoj thiab cov qauv hlau; nws yog siv rau kev tsim cov organic (ua acetaldehyde, acetic acid, benzene, roj hmab hluavtaws, cov xov hluavtaws, thiab lwm yam), Tshuaj hluavtaws thiab tshuaj intermediates vinyl acetylene lossis divinyl acetylene; siv los tsim cov roj txheem xws li transformer roj tsom xam cov roj txheem. Cov roj acetylene purity siab yog siv rau kev nqus atomic thiab lwm yam cuab yeej. Txoj kev ntim khoom ntawm acetylene feem ntau yog yaj hauv cov kuab tshuaj thiab cov ntaub ntawv porous thiab sau rau hauv cov thooj voos hlau. Khaws cia rau hauv lub tsev khaws khoom txias, muaj cua nkag. Khaws cia deb ntawm hluav taws thiab cua sov. Qhov kub cia yuav tsum tsis pub tshaj 30 ° C. Nws yuav tsum khaws cia sib cais ntawm oxidants, acids, thiab halogens, thiab zam kev khaws cia sib xyaw. Siv cov teeb pom kev zoo thiab qhov cua tsis tawg. Txwv tsis pub siv cov khoom siv kho tshuab thiab cov cuab yeej uas yooj yim hluav taws xob. Qhov chaw cia khoom yuav tsum muaj cov khoom siv kho qhov xau thaum muaj xwm txheej ceev.

Daim Ntawv Thov:

①Txiav thiab vuam hlau:

Thaum acetylene hlawv, nws tuaj yeem tsim kub heev. Qhov kub ntawm nplaim oxyacetylene tuaj yeem ncav cuag li 3200 ℃, uas yog siv rau kev txiav thiab vuam hlau.

② Cov khoom siv tshuaj lom neeg yooj yim:

Acetylene yog cov khoom siv tseem ceeb rau kev tsim cov acetaldehyde, acetic acid, benzene, roj hmab hluavtaws, thiab cov fibers hluavtaws.

③ Kev sim

Cov acetylene purity siab siv tau rau hauv qee qhov kev sim.

Pob khoom ib txwm muaj: