Qhov sib txawv tseem ceeb ntawm pyrolysis carbonization thiab torrefaction yog pyrolysis yog kev tawg ntawm biomass thaum tsis muaj oxygen, thiab carbonization yog cov txheej txheem ntawm hloov cov organic teeb meem rau carbon, whereas torrefaction yog ib tug me me daim ntawv ntawm pyrolysis.
Pyrolysis yog cov tshuaj tiv thaiv decomposition hauv chemistry qhov twg cov ntaub ntawv organic tawg thaum tsis muaj oxygen. Carbonization yog txheej txheem kev lag luam uas cov organic teeb meem hloov mus rau carbon. Torrefaction yog ib qho me me ntawm pyrolysis uas tshwm sim ntawm qhov kub ntawm 200 thiab 320 degrees Celsius.
YPyrolysis yog dab tsi?
Pyrolysis yog ib hom kev tawm tsam decomposition uas cov ntaub ntawv organic tawg thaum tsis muaj oxygen. Nyob rau hauv cov txheej txheem no, cua sov yog siv rau qhov kev tshwm sim rau kev vam meej. Yog li ntawd, peb tuaj yeem yooj yim nce tus nqi ntawm cov tshuaj tiv thaiv los ntawm kev nce tus nqi ntawm cov cua sov. Feem ntau, pyrolysis tshwm sim ntawm lossis siab dua 430oC. Txawm li cas los xij, feem ntau, 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 khoom, nws feem ntau yog charcoal lossis biochar.
Pyrolysis feem ntau hloov cov organic teeb meem rau hauv lawv cov khoom gaseous, cov khoom seem ntawm cov pa roj carbon thiab tshauv, thiab cov kua hu ua pyrolytic roj. Peb siv ob txoj hauv 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 cov khoom 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.
Carbonization yog dab tsi?
Carbonization yog txheej txheem kev lag luam uas cov organic teeb meem hloov mus rau carbon. Cov organic teeb meem peb xav txog ntawm no suav nrog cov nroj tsuag thiab cov tsiaj tuag. Cov txheej txheem tshwm sim los ntawm kev puas tsuaj distillation. Nws yog cov tshuaj tiv thaiv pyrolytic uas yog suav tias yog cov txheej txheem nyuaj uas peb tuaj yeem soj ntsuam ntau yam tshuaj lom neeg tshwm sim ib txhij; Piv txwv li, dehydrogenation, condensation, hydrogen hloov thiab isomerization.
Cov txheej txheem carbonization txawv ntawm cov txheej txheem coalification vim tias carbonization yog txheej txheem sai dua vim nws cov tshuaj tiv thaiv tau nrawm dua los ntawm ntau qhov kev txiav txim siab. Feem ntau, cov cua sov siv tau tuaj yeem tswj cov qib carbonization thiab cov ntsiab lus seem ntawm cov khoom txawv teb chaws. Piv txwv li, ntawm 1200 K qhov kub thiab txias, cov ntsiab lus ntawm cov seem yog kwv yees li 90% los ntawm qhov hnyav, thaum txog 1600 K kub, nws yog li 99% los ntawm qhov hnyav.
Feem ntau, carbonization yog cov tshuaj tiv thaiv exothermic, thiab peb tuaj yeem ua rau nws tus kheej txhawb nqa; peb tuaj yeem siv nws ua lub zog uas tsis tsim cov pa roj carbon dioxide. Txawm li cas los xij, yog tias cov khoom siv biomaterial raug hloov pauv sai sai, piv txwv li, hauv kev tawg nuclear, biomatter tau txais carbonized sai li sai tau, thiab nws hloov mus ua cov khoom carbon..
Torfaction yog dab tsi?
Torrefaction yog ib daim ntawv me me ntawm pyrolysis uas tshwm sim ntawm qhov kub ntawm 200 txog 320 degrees Celsius. Cov txheej txheem no tshwm sim nrog biomass xws li ntoo thiab nplej. Cov txheej txheem ntawm torrefaction tuaj yeem hloov pauv cov khoom siv biomass txhawm rau muab cov roj zoo dua rau kev siv hluav taws xob thiab kev siv roj. Ntxiv mus, cov txheej txheem no tuaj yeem tsim cov khoom qhuav qhuav uas tuaj yeem txo qis lossis tshem tawm ntawm nws lub peev xwm rau cov organic decomposition.
Thaum torrefaction thiab densification tau ua ke nrog ib leeg, nws tuaj yeem tsim lub zog-dense duel cov cab kuj txog li 20 GJ / tuj qis cua sov nqi (LHV). Tsis tas li ntawd, cov txheej txheem no tuaj yeem ua rau cov khoom siv los ntawm cov tshuaj tiv thaiv Maillard.
Feem ntau, torrefaction yog kev kho mob thermochemical ntawm biomass uas tau ua nyob rau hauv huab cua thiab tsis muaj oxygen. Thaum cov txheej txheem no, dej hauv biomass thiab cov volatiles superfluous raug tso tawm, tso cai rau cov biopolymers rau ib nrab decompose thaum tsim ntau hom volatiles. Yog li, cov khoom kawg ntawm cov txheej txheem no yog cov khoom seem, cov khoom qhuav hu ua torrefied biomass (los yog biocoal).
Qhov Sib Txawv Ntawm Pyrolysis Carbonization thiab Torrefaction
Pyrolysis yog cov tshuaj tiv thaiv decomposition hauv chemistry qhov twg cov ntaub ntawv organic tawg thaum tsis muaj oxygen. Carbonization yog txheej txheem kev lag luam uas cov organic teeb meem hloov mus rau carbon. Torrefaction yog ib qho me me ntawm pyrolysis uas tshwm sim ntawm qhov kub ntawm 200 thiab 320 degrees Celsius. Qhov sib txawv tseem ceeb ntawm pyrolysis carbonization thiab torrefaction yog pyrolysis yog kev tawg ntawm biomass thaum tsis muaj oxygen thiab carbonization yog hloov dua siab tshiab ntawm cov organic teeb meem rau carbon, whereas torrefaction yog ib tug me me daim ntawv ntawm pyrolysis..
Cov hauv qab no infographic teev qhov sib txawv ntawm pyrolysis carbonization thiab torrefaction hauv daim ntawv tabular.
Summary – Pyrolysis vs Carbonization vs Torrefaction
Pyrolysis yog cov tshuaj tiv thaiv decomposition hauv chemistry qhov twg cov ntaub ntawv organic tawg thaum tsis muaj oxygen. Carbonization yog txheej txheem kev lag luam uas cov organic teeb meem hloov mus rau hauv cov pa roj carbon thaum torrefaction yog ib qho me me ntawm pyrolysis uas tshwm sim ntawm qhov kub ntawm 200 thiab 320 degrees Celsius. Qhov sib txawv tseem ceeb ntawm pyrolysis carbonization thiab torrefaction yog pyrolysis yog qhov tawg ntawm biomass thaum tsis muaj oxygen thiab carbonization yog cov txheej txheem ntawm kev hloov cov organic teeb meem rau carbon whereas torrefaction yog daim ntawv me me ntawm pyrolysis.
