Peb theem kub ntawm qhov cub carbonization tshiab

Peb theem kub ntawm qhov cub carbonization tshiab

Lub tshuab ziab khaub ncaws

pib los ntawm ignition mus txog rau thaum lub cub tawg kub txog 160 degree. Lub sijhawm no, cov dej noo uas muaj nyob hauv lub tshuab qws feem ntau yog nyob ntawm cov cua sov sab nraud thiab cov cua sov uas tsim los ntawm nws tus kheej combustion kom evaporate. Cov tshuaj muaj pes tsawg leeg ntawm cov neeg kho tshuab rods tsis tau hloov.

Thawj theem ntawm carbonization

Cov theem no feem ntau yog nyob ntawm qhov combustion ntawm tus pas nrig nws tus kheej los tsim kom muaj cua sov, kom lub qhov cub kub kub nce mus txog 160 thiab 280 degree. Nyob rau lub sijhawm no, cov khoom siv ntoo tau dhau los ua cov tshuaj tiv thaiv thermal decomposition, thiab nws cov muaj pes tsawg leeg pib hloov. Ntawm lawv, cov khoom tsis ruaj khov, xws li hemicellulose, yog decomposed los tsim CO2, CO, thiab ib qho me me ntawm acetic acid.

Tag nrho carbonization theem

Qhov kub nyob rau theem no yog 300 txog 650 degree.

Thaum lub sij hawm no, cov khoom siv ntoo raug thermal decomposition sai, thiab ntau cov khoom ua kua xws li acetic acid, methanol, thiab ntoo tar raug tsim. Tsis tas li ntawd, cov roj hluav taws xob xws li methane thiab ethylene raug tsim, thiab cov roj hluav taws xob no tau hlawv hauv qhov cub. Thermal decomposition thiab gas combustion tsim ib tug loj npaum li cas ntawm tshav kub, uas ua rau kom lub cub tawg kub, thiab cov khoom ntoo yog qhuav-distilled rau hauv charcoal ntawm kub.

Txhawm rau calcine high-temperature charcoal, ntxiv rau peb theem saum toj no, peb kuj yuav tsum tau ua kom sov, kom qhov kub thiab txias nyob rau hauv lub cub tawg txuas ntxiv mus txog li 800 degree C ~ 1000 degree C kom cov khoom volatile seem nyob rau hauv lub cub tawg. charcoal tuaj yeem tso tawm, thiab cov khoom siv hluav taws xob tuaj yeem nce ntxiv. Cov ntsiab lus carbon ntawm carbon tsub kom cov graphite qauv ntawm cov pa roj carbon thiab txhim khu cov conductivity. Carbonization yog ib feem tseem ceeb ntawm kev ua charcoal. Cov txheej txheem carbonization yog qhov tseem ceeb ntawm kev tsim cov tshuab ua tshuab ua hluav taws xob. Nws zoo li tsim ib lub tsev. Cov ntaub ntawv zoo yog lub hauv paus ntawm lub tsev nyob rau hauv qhov chaw hauv av. Cov tshuab carbonization hauv cov txheej txheem carbonization yog qhov saum toj no hauv av ntawm lub tsev. Cov pa roj carbonization tau muab faib ua peb theem: qis-kub tso tawm, kub-calcination, thiab txias. Thaum cov nyiaj hli pas nrig nkag mus rau hauv lub cub tawg carbonization, nws muaj li 8 feem pua ​​ntawm cov dej noo, uas yog cov yeeb ncuab ntawm carbonization. Vim hais tias lub tshuab nyiaj hli pas nrig feem ntau ntshai ntawm ya raws, noo noo nyob rau hauv cov nyiaj hli pas nrig yuav cuam tshuam rau carbonization zoo. Yog li ntawd, lub sij hawm dej ntws yog qhov tseem ceeb. Lub sij hawm tshem tawm cov dej noo feem ntau yog 10-15 teev rau lub ntiaj teb kilns thiab 2-3.5 teev rau lub tshuab ua kilns. Lub sijhawm cua sov ntev tuaj yeem tiv thaiv cov pas nrig los ntawm kev ntub dej thiab tawg thiab ua kom zoo ntawm carbonization. Thaum lub cub tawg kub nce mus txog 300 degrees, ntau cov roj combustible tuaj yeem tsim nyob rau hauv qhov cub. Nws yog tsim nyog hais tias peb cubic meters ntawm methane roj tuaj yeem tsim tau ib kilogram ntawm raw khoom. Cov roj no yog siv los ua kom sov lub qhov cub. Cov paug tuaj yeem siv rau ziab qhov chaw kub tshaj 400 degrees. Nws yog ib qho tsim nyog los kaw qhov hluav taws kub anaerobic nyob rau hauv lub tshav kub preservation thiab calcination theem. Nws tuaj yeem raug coj los ntawm kev sib xyaw ua ke los yog dej txias. Tom qab cov charcoal tawm ntawm lub qhov cub, nws yuav tsum tau muab tso rau hauv qhov cua ua ntej cov charcoal tawm los tiv thaiv cov pa roj carbon dioxide. Cov charcoal tawm ntawm lub qhov cub yuav tsum muab tso rau sab nraum zoov ntau tshaj 8 teev. Txhawm rau tiv thaiv qhov rov tshwm sim ntawm cov tshauv, ua rau hluav taws kub.