Combustible gas yog muab faib ua ib qho combustible gas thiab mixed combustible gas, uas muaj cov yam ntxwv ntawm flammable thiab explosive. Lub concentration txwv tus nqi ntawm ib tug sib tov sib xyaw ntawm combustible gas thiab combustion-txhawb roj uas ua rau tawg nyob rau hauv tus txheej txheem xeem tej yam kev mob. combustion-support gases tuaj yeem yog huab cua, oxygen lossis lwm yam combustion-support gases.

Qhov txwv tsis pub tawg yog hais txog qhov txwv tsis pub muaj roj lossis vapor hauv huab cua. Cov ntsiab lus qis tshaj plaws ntawm cov roj combustible uas tuaj yeem ua rau tawg yog hu ua qhov kev txwv qis dua; qhov siab tshaj concentration yog hu ua lub siab tawg txwv. Qhov kev txwv tawg txawv nrog cov khoom sib xyaw.

Cov nplaim hluav taws kub thiab tawg muaj xws li hydrogen, methane, ethane, propane, butane, phosphine thiab lwm yam roj. Txhua lub roj muaj cov khoom sib txawv thiab txwv kev tawg.

Hydrogen

Hydrogen (H2)yog ib qho tsis muaj xim, tsis muaj ntxhiab, tsis muaj roj. Nws yog cov kua xim tsis muaj xim ntawm kev kub siab thiab qis kub thiab yog me ntsis soluble hauv dej. Nws yog ib qho flammable heev thiab tuaj yeem tawg hnyav thaum sib xyaw nrog huab cua thiab ntsib hluav taws. Piv txwv li, thaum sib xyaw nrog chlorine, nws tuaj yeem tawg ib txwm nyob hauv qab hnub ci; thaum tov nrog fluorine hauv qhov tsaus ntuj, nws tuaj yeem tawg; hydrogen nyob rau hauv ib lub tog raj kheej kuj tuaj yeem tawg thaum cua sov. Qhov tawg txwv ntawm hydrogen yog 4.0% rau 75.6% (ntim concentration).

Methane

Methaneyog cov roj tsis muaj xim, tsis muaj ntxhiab tsw nrog qhov kub ntawm -161.4 ° C. Nws yog qhov sib zog dua li huab cua thiab yog cov pa roj uas muaj hluav taws kub heev uas nyuaj rau yaj hauv dej. Nws yog ib qho yooj yim organic compound. Kev sib xyaw ntawm methane thiab huab cua nyob rau hauv ib qho kev faib ua feem yuav tawg thaum ntsib lub txim. Kev tawg sab sauv % (V / V): 15.4, qis tawg txwv % (V / V): 5.0.

Ethane

Ethane yog insoluble nyob rau hauv dej, me ntsis soluble nyob rau hauv ethanol thiab acetone, soluble nyob rau hauv benzene, thiab tuaj yeem tsim cov khoom tawg thaum tov nrog cua. Nws yog qhov txaus ntshai rau hlawv thiab tawg thaum raug tshav kub thiab qhib nplaim taws. Nws yuav tsim cov tshuaj lom neeg ua phem thaum sib cuag nrog fluorine, chlorine, thiab lwm yam. Sab saum toj tawg txwv % (V/V): 16.0, qis tawg txwv % (V / V): 3.0.

Propane

Propane (C3H8), roj tsis muaj xim, tuaj yeem tsim cov khoom tawg thaum sib xyaw nrog huab cua. Nws yog qhov txaus ntshai rau hlawv thiab tawg thaum raug tshav kub thiab qhib nplaim taws. Nws reacts hnyav thaum nyob rau hauv kev sib cuag nrog oxidants. Upper tawg txwv % (V / V): 9.5, qis tawg txwv % (V / V): 2.1;

N.butane

n-Butane yog cov roj tsis muaj xim tsis muaj nplaim taws, tsis muaj dej, yooj yim soluble hauv ethanol, ether, chloroform thiab lwm yam hydrocarbons. Nws tsim cov khoom tawg nrog huab cua, thiab qhov txwv tsis pub tawg yog 19% ~ 84% (tam sim no).

Ethylene

Ethylene (C2H4) yog cov roj tsis muaj xim nrog cov ntxhiab tsw qab tshwj xeeb. Nws yog soluble hauv ethanol, ether thiab dej. Nws yog ib qho yooj yim rau hlawv thiab tawg. Thaum cov ntsiab lus hauv huab cua nce mus txog 3%, nws tuaj yeem tawg thiab hlawv. Qhov kev txwv tawg yog 3.0 ~ 34.0%.

Acetylene

Acetylene (C2H2)yog ib qho tsis muaj xim tsis muaj roj nrog ether tsw. Nws yog me ntsis soluble hauv dej, soluble hauv ethanol, thiab yooj yim soluble hauv acetone. Nws yog ib qho yooj yim heev rau hlawv thiab tawg, tshwj xeeb tshaj yog thaum nws los rau hauv kev sib cuag nrog phosphides los yog sulfides. Qhov kev txwv tawg yog 2.5 ~ 80%.

Propylene

Propylene yog cov roj tsis muaj xim uas muaj ntxhiab tsw qab nyob rau hauv ib txwm muaj. Nws yooj yim soluble hauv dej thiab acetic acid. Nws yog qhov yooj yim rau tawg thiab hlawv, thiab qhov kev txwv tawg yog 2.0 ~ 11.0%.

Cyclopropane

Cyclopropane yog cov roj tsis muaj xim nrog cov ntxhiab tsw ntawm roj av ether. Nws yog me ntsis soluble hauv dej thiab yooj yim soluble hauv ethanol thiab ether. Nws yog ib qho yooj yim rau hlawv thiab tawg, nrog rau qhov tawg txwv ntawm 2.4 ~ 10.3%.

1,3 Tab

1,3 Butadiene yog cov roj uas tsis muaj xim thiab tsis muaj ntxhiab, tsis muaj kuab lom hauv dej, yooj yim soluble hauv ethanol thiab ether, thiab soluble hauv cuprous chloride tov. Nws tsis ruaj tsis khov ntawm chav tsev kub thiab yooj yim decomposes thiab tawg, nrog rau qhov tawg txwv ntawm 2.16 ~ 11.17%.

Methyl chloride

Methyl chloride (CH3Cl) yog cov roj tsis muaj xim, yooj yim liquefied gas. Nws saj qab zib thiab muaj ntxhiab tsw zoo li ether. Nws yooj yim soluble hauv dej, ethanol, ether, chloroform thiab glacial acetic acid. Nws yog ib qho yooj yim rau hlawv thiab tawg, nrog rau qhov tawg txwv ntawm 8.1 ~ 17.2%