Coal tuaj yeem ignite spontaneously thaum raug oxygen, uas ua rau nws hnov mob thiab cua sov thaum tsis muaj qhov cua kom txias. Pyrite oxidation feem ntau yog qhov ua rau cov hluav taws kub nyhiab hauv cov mine qub. … Thaum qhov kub ntawm qhov hluav taws kub mus txog, combustion tshwm sim nrog oxidizers tam sim no (oxygen).
Vim li cas cov roj ntub dej nws tus kheej ignite?
"Kev ziab thee yog txheej txheem endothermic thiab txo qhov kub ntawm cov thee. Wetting (los yog nce noo noo) yog txheej txheem exothermic thiab cov cua sov liberated tuaj yeem ua kom cov cua sov ntawm tus kheej. the coal. "
Qhov kub li cas ua cov roj hluav taws xob ua kom tawg tau?
Qhov kub ntawm qhov hluav taws kub rau cov thee, uas nyob ntawm ntau yam xws li cov qib thee, cov ntsiab lus tsis hloov pauv thiab qhov loj me, txawv ntawm 160 thiab 685 ° C rau feem ntau cov coals. Nyob rau hauv adiabatic tej yam kev mob, qhov tsawg kawg nkaus kub ntawm ib tug thee yuav kub nws tus kheej yog 35–140°C (Smith and Lazarra, 1987).
Yuav ua li cas spontaneous combustion ntawm thee?
Kev sib txuas ua ke yogtxheej txheem uas cov tshuaj tiv thaiv oxidation tshwm sim yam tsis muaj kev cuam tshuam ntawm cov khoom siv hluav taws xob sab nraud Qhov kub nce yog tshwm sim los ntawm cov cua sov liberated los ntawm thee los ntawm cov tshuaj tiv thaiv [22] ib. … ntawm qhov chaw thee thaum lub coal seam tshiab raug rau atmospheric tej yam kev mob.
Dab tsi ua rau hluav taws kub?
Cov hluav taws kub kub tshwm sim hauv kev ua haujlwm thee mines, tso cov thee mines thiab cov khib nyiab pov tseg. Qee zaum lawv pib vim muaj hluav taws nyob ze, tab sis lawv kuj tuaj yeem ignite dhau los ntawm kev sib xyaw ua ke: qee cov zaub mov hauv cov thee, xws li sulfides thiab pyrites, tuaj yeem oxidize thiab hauv cov txheej txheem tsim kom muaj cua sov txaus. ua rau hluav taws.
