Yuav ua li cas los tsim cov roj pellet zoo?

Ntoo Pellet Production hauv Wood Pellet Cog
Vim tias cov khoom siv woody yog siab dua li ntawm lwm cov neeg biomasses, ntoo pellet tuaj yeem ua rau pellets los ntawm ntau cov ntaub ntawv rawides zoo li cov liaj teb. Cov txheej txheem tsim pellets yog txiav txim siab los ntawm cov khoom siv raw tab sis feem ntau suav nrog cov kauj ruam hauv qab no: kev kho cov khoom siv raw, tshuaj ntsuam xyuas, sib tsoo, ziab, pelletizing, txias, sifting, thiab ntim. Yuav ua li cas ua ntoo pellets? Hauv qab no yog cov ncauj lus kom ntxaws cov kauj ruam ntawm kev tsim cov ntoo pellets rau kev tsim khoom loj.

Sib tsoo Woody Raw Khoom
Ua ntej pelletizing, nws yog ib qho tseem ceeb kom paub tseeb tias cov khoom ntoo yog qhuav thiab homogeneous. Cov txheej txheem no tseem hu ua milling, crushing, pulverizing lossis comminution. Hauv kev sib tsoo no, ua ntej ntawm tag nrho cov, cov khoom siv raw yuav tsum tau lim ua ntej sib tsoo kom tshem tawm cov khoom xws li pob zeb lossis hlau. Yog hais tias cov khoom siv raw khoom loj dhau lawm, cov ntoo pellet qhov zoo yuav txo qis los yog hnyav dua koj tsis tuaj yeem tau txais ntoo pellets, vim hais tias cov khoom loj loj dhau mus rau hauv lub qhov hauv qhov tuag. Txawm li cas los xij, nws yuav tsum tau pom tias cov khoom siv raw tuaj yeem ua rau hauv av zoo heev, ua rau cov khoom poob nws 'fibre' xwm thiab yog li tsis khi rau hauv pelleting theem. Yog li ntawd, ib tug loj ntoo rauj zeb yog tsim nyog nyob rau hauv lub sib tsoo txheej txheem rau pulverizing.

Qhuav Woody Raw Khoom
Rotary dryerRotary dryer yog siv los ziab cov ntoo kom ntseeg tau tias cov ntsiab lus noo noo yog 8-10%. Drum driers yog hom khoom siv ntau tshaj plaws siv hauv North America. Yav dhau los, natural gas yog cov roj ntau tshaj plaws. Txawm li cas los xij, nrog kev nce hauv cov nqi roj fossil, ntau tus neeg tsim khoom tau hloov mus rau cov ntoo khib nyiab. Hauv kev sib piv rau kev siv cov pa roj, cov ntoo khib nyiab yog pheej yig dua thiab muab lub sijhawm los ua lag luam ib puag ncig cov txiaj ntsig cuam tshuam nrog cov pa hluav taws xob (GHG) emissions. Cov txiaj ntsig ib puag ncig no tuaj yeem yog qhov tseem ceeb thaum muag rau kev lag luam nrog cov kev cai ib puag ncig tseem ceeb xws li European lag luam. Feem ntau, ntoo fiber ntau tuaj yeem pelletized ntawm noo noo siab li 17%. Txawm li cas los xij, qib zoo tshaj yog 12% lossis tsawg dua. Cov ntaub ntawv nyoos ntoo kuj tuaj yeem qhuav dhau los ua pelletize, yog li koj yuav tsum nrhiav qhov sib npaug ntawm qhov siab thiab qis noo noo.