Qhov sib txawv tseem ceeb ntawm calcination thiab pyrolysis yog tias calcination tau ua tiav thaum muaj huab cua lossis oxygen tsawg, qhov pyrolysis ua tiav thaum tsis muaj cua.
Calcination thiab pyrolysis yog ob hom kev sib xyaw combustion uas sib txawv ntawm ib leeg raws li tus nqi ntawm cov huab cua uas muaj nyob rau hauv cov tshuaj sib tov thaum lub sij hawm combustion. Calcination yog cov txheej txheem tshuaj nyob rau hauv pyrometallurgy uas muaj cov cua sov ntawm cov hlau ore nyob rau hauv lub xub ntiag ntawm huab cua los yog oxygen. Pyrolysis, ntawm qhov tod tes, yog cov tshuaj tiv thaiv decomposition hauv chemistry qhov twg cov ntaub ntawv organic tawg thaum tsis muaj oxygen.
calcination yog dab tsi
Calcination yog cov txheej txheem tshuaj nyob rau hauv pyrometallurgy uas muaj cov cua sov ntawm cov hlau ore nyob rau hauv lub xub ntiag ntawm huab cua los yog oxygen. Nyob rau hauv cov txheej txheem calcination, peb yuav tsum tau kom sov cov ore mus rau qhov kub thiab txias hauv qab nws melting point. Qhov no yog ib txoj kev pab tau zoo heev. Lub npe calcination los ntawm Latin lub npe vim nws daim ntawv thov loj - cua sov ntawm calcium carbonate ores.
Daim duab 01: Calcination
Peb tuaj yeem ua cov txheej txheem calcination hauv lub reactor uas muaj cov qauv cylindrical; peb hu nws lub calciner. Calcination tshwm sim nyob rau hauv no calciner reactor nyob rau hauv kev tswj tej yam kev mob. Cov pa roj carbon dioxide yog tsim thiab tso tawm thaum lub sij hawm calcination, thiab calcium carbonate converts rau hauv calcium oxide. Cov txheej txheem calcination no yog qhov tseem ceeb, feem ntau yog tshem tawm cov impurities tsis haum. Txawm li cas los xij, qee zaum peb yuav tsum siv lub qhov cub rau calcination vim tias nws cuam tshuam rau cov khoom cua sov kom kub siab heev.
Ib qho piv txwv zoo ntawm calcination yog kev tsim cov txiv qaub los ntawm limestone. Thaum lub sijhawm txheej txheem no, peb yuav tsum ua kom sov limestone mus rau qhov kub siab, piv txwv li, qhov kub siab txaus los tsim thiab tso cov pa roj carbon dioxide. Nyob rau hauv cov txheej txheem no, txiv qaub cov ntaub ntawv nyob rau hauv ib qho yooj yim hmoov mob.
YPyrolysis yog dab tsi?
Pyrolysis yog cov tshuaj tiv thaiv decomposition hauv chemistry qhov twg cov ntaub ntawv organic tawg thaum tsis muaj oxygen. Peb yuav tsum tau siv cov cua sov rau qhov kev tshwm sim no kom nce qib. Yog li ntawd, peb tuaj yeem nce tus nqi ntawm cov tshuaj tiv thaiv los ntawm kev nce qhov kub ntawm qhov muab. Feem ntau, pyrolysis tshwm sim ntawm lossis siab dua 430oC. Txawm li cas los xij, feem ntau ntawm lub sijhawm, peb tuaj yeem ua cov tshuaj tiv thaiv no nyob ze qhov tsis muaj oxygen vim tias nws nyuaj heev kom tau txais qhov chaw tsis muaj oxygen. Cov khoom kawg ntawm cov tshuaj tiv thaiv no yog nyob rau theem roj, theem ua kua lossis theem khoom. Feem ntau, cov txheej txheem no tsim cov pa roj. Yog tias nws tsim cov kua, peb hu cov kua no "tar". Yog tias nws yog ib qho khoom, feem ntau, tuaj yeem yog charcoal lossis biochar.
Daim duab 02: Pyrolysis
Feem ntau, pyrolysis hloov cov organic teeb meem rau hauv lawv cov khoom siv roj, cov khoom seem ntawm carbon thiab tshauv, thiab cov kua hu ua pyrolytic roj. Peb siv ob txoj kev loj los tshem tawm cov kab mob ntawm cov khoom; kev puas tsuaj thiab tshem tawm. Cov txheej txheem kev puas tsuaj rhuav tshem cov kab mob mus rau hauv cov khoom me me thaum cov txheej txheem tshem tawm cais cov kab mob los ntawm qhov xav tau.
Cov tshuaj tiv thaiv no yog siv rau ntau yam lag luam los tsim hluav taws xob, cov pa roj carbon activated, methanol, thiab lwm yam. Tsis tas li ntawd, nws tuaj yeem rhuav tshem cov organic sib txuas semi-volatile, fuels, thiab lwm yam. Tsis tas li ntawd, peb tuaj yeem siv cov txheej txheem no los kho cov organic pov tseg. tawm ntawm factories.
Qhov txawv ntawm Calcination thiab Pyrolysis yog dab tsi?
Calcination thiab pyrolysis yog cov tshuaj tiv thaiv tseem ceeb. Qhov sib txawv tseem ceeb ntawm calcination thiab pyrolysis yog tias calcination yog ua nyob rau hauv lub xub ntiag ntawm ib tug tsawg npaum li cas ntawm huab cua los yog oxygen, whereas pyrolysis yog ua nyob rau hauv tsis muaj huab cua. Calcination yog siv nyob rau hauv zus tau tej cov txiv qaub los ntawm limestone, thaum pyrolysis yog siv nyob rau hauv zus tau tej cov charcoal, activated carbon, methanol, thiab lwm yam.
Hauv qab infographic qhia txog qhov sib txawv ntawm calcination thiab pyrolysis.
Summary – Calcination vs Pyrolysis
Calcination thiab pyrolysis yog cov tshuaj tiv thaiv tseem ceeb. Qhov sib txawv tseem ceeb ntawm calcination thiab pyrolysis yog tias calcination tau ua tiav thaum muaj huab cua tsawg lossis oxygen, thaum pyrolysis ua tiav thaum tsis muaj cua.
