Pyrolysis

pyrolysis cog

Tus txheej txheem ntawm pyrolysis los yog pyrolytic, tseem hu ua, yog ib tug txheej txheem nyob rau hauv uas degradation ntawm biomass yog tsim los ntawm qhov kev txiav txim ntawm tshav kub yam tsis xav tau cov pa oxygen, uas yog, nws yuav siv sij hawm qhov chaw nyob rau hauv ib tug qhuav qhov chaw. Cov khoom tsim los ntawm pyrolysis tuaj yeem yog cov khoom khib nyiab, kua thiab roj, thiab sib haum rau cov khoom xws li cov thee lossis charcoal, tar thiab thaum kawg cov khoom lag luam paub zoo los yog cov pa hluav taws xob. Cov txheej txheem no tuaj yeem tshwm sim nyob ib leeg hauv qhov xwm txheej lossis ua ke thaum sib xyaw lossis gasification.

Hauv tsab xov xwm no peb yuav qhia koj txhua yam koj yuav tsum paub txog pyrolysis, nws cov yam ntxwv thiab qhov tseem ceeb.

Lub ntsiab nta

txheej txheem pyrolytic

Pyrolysis yog kev kho mob thermochemical uas Nws tuaj yeem siv rau txhua yam khoom siv organic. Cov khoom raug raug kub siab, thaum tsis muaj oxygen, rau chemically thiab lub cev sib cais rau hauv cov molecules txawv.

Pyrolysis yog ib hom thermolysis thiab tuaj yeem txhais tau tias yog qhov thermal decomposition uas cov khoom siv nyob rau hauv qhov tsis muaj oxygen lossis qee hom reagent. Lub decomposition undergone tuaj yeem tshwm sim los ntawm cov txheej txheem sib txawv ntawm cov tshuaj lom neeg thiab cov txheej txheem kub thiab huab cua hloov pauv. Nws tseem tuaj yeem txhais tau tias yog cov kauj ruam uas ua ntej gasification thiab combustion.

Thaum nws tshwm sim nyob rau hauv nws daim ntawv heev, tsuas yog cov pa roj carbon tseem tshuav raws li qhov seem, uas yog hu ua charring. Los ntawm pyrolysis peb tuaj yeem tau txais cov khoom sib txawv sib txawv uas muaj txiaj ntsig zoo hauv kev ua haujlwm. Pyrolysis cov khoom ib txwm tsim cov khoom siv roj xws li cov pa roj carbon, cov kua dej thiab cov roj uas tsis yog condensable xws li H2, CH4, CnHm, CO, CO2 thiab N. Txij li thaum cov kua theem tsuas yog muab rho tawm los ntawm cov pa pyrolysis thaum nws txias, ob lub kwj ntawm cov roj. tuaj yeem siv ua ke hauv qee daim ntawv thov uas kub syngas nkag ncaj qha mus rau lub burner lossis oxidation chamber.

Hom pyrolysis

pyrolysis

Muaj ob yam sib txawv ntawm pyrolysis nyob ntawm lub cev uas nws tau ua:

  • Aqueous pyrolysis: Lo lus no yog siv thaum nws yuav tsum tau xa mus rau pyrolysis uas tshwm sim nyob rau hauv lub xub ntiag ntawm dej, xws li chav cracking ntawm cov roj los yog thermal depolymerization ntawm cov organic residues nyob rau hauv hnyav crude roj.
  • Nqus Pyrolysis: Hom pyrolysis lub tshuab nqus tsev no suav nrog cov khoom siv cua sov hauv lub tshuab nqus tsev kom ua tiav cov ntsiab lus qis dua thiab zam cov tshuaj tsis zoo.

Cov txheej txheem uas pyrolysis tshwm sim tau muab faib ua peb theem, raws li hauv qab no:

  • Thawj theem muaj qeeb decomposition nrog kev tsim cov dej me me, oxides ntawm carbon, hydrogen thiab methane. Qhov kev decomposition no tshwm sim los ntawm kev tawg ntawm cov ntawv cog lus vim qhov kub thiab txias ntawm cov txheej txheem thiab tso tawm cov pa roj tso rau hauv cov thee.
  • Qhov thib ob yog hu ua active thermal decomposition theem. Qhov kub nce thaum lub sij hawm no thiab cov pa roj carbon molecules tawg ntau heev, tsim condensable hydrocarbons thiab tars. Cov theem no pib ntawm 360 ° C thiab xaus thaum nws nce mus txog qhov kub ntawm kwv yees li 560 ° C.
  • Qhov kawg theem tshwm sim ntawm qhov kub siab tshaj 600ºC thiab yog tus cwj pwm los ntawm kev maj mam ploj ntawm hydrogen thiab lwm yam heteroatoms.

Dab tsi yog pyrolysis siv rau hauv chav ua noj?

qhov cub pyrolysis

Thaum peb nyob hauv chav ua noj, peb yuav tsum muaj cov cuab yeej tsim nyog los ua kom peb lub neej yooj yim dua, thiab muaj qhov cub hluav taws xob zoo tshaj plaws rau qhov ntawd. Tam sim no muaj ntau qhov cub nrog kev tu tus kheej, hu ua pyrolysis ncu, uas nws lub luag haujlwm tseem ceeb yog tuaj yeem ntxuav lawv tus kheej.

Hom qhov cub no Lawv muaj peev xwm nce qhov kub ntawm 500 ° C, decomposing seem ntawm cov zaub mov sab hauv, tig mus rau hauv chav los yog tshauv, thiab tseem tshem tawm cov ntxhiab tsw tsw qab tom qab ua noj hauv qhov cub. Ntawd yog, cov zaub mov tseem tshuav, vim qhov kub thiab txias, hloov cov khoom organic rau hauv carbon dioxide, uas, thaum hloov mus rau hauv dej, evaporates; Ib yam li ntawd, cov teeb meem inorganic hloov mus rau cov hmoov tshauv thaum raug rau qhov kub ntawd.

Cov txheej txheem no tuaj yeem siv sijhawm li 1 txog 4 teev., nyob ntawm seb qhov kev pab cuam huv npaum li cas, thaum kawg peb tsuas yog ntxuav lub qhov cub nrog ib daim ntaub ntub dej thiab sau cov tshauv. Ua li no, kev siv cov khoom siv tshuaj lom neeg uas tuaj yeem ua rau muaj kev phom sij rau kev noj qab haus huv dhau sijhawm raug tshem tawm.

Cov txiaj ntsig hauv qhov cub thiab ib puag ncig tseem ceeb

Muaj lub qhov cub uas tso cai rau peb txuag sijhawm thiab nyiaj txiag, ua pyrolysis coj cov txiaj ntsig hauv qab no:

  • Tsis muaj qhov tsis ntseeg, qhov txiaj ntsig tseem ceeb yog kev tu tus kheej.
  • Nws yog ecological raws li nws txo kev siv cov khoom siv tshuaj los ntxuav lub qhov cub.
  • Raws li kev suav nqi hluav taws xob ntawm National Energy Commission, tus nqi hluav taws xob tsawg vim tias nws siv 0,39 xees xwb.
  • Nws yog tsim los nrog cov ntaub ntawv zoo tshaj plaws los tiv thaiv rooj tog los ntawm qhov kub thiab txias.
  • Thaum lub cub tawg mus txog qhov kub ntawm 500 ° C, qhov cub qhov rooj xauv thiab qhov cub ntxuav nws tus kheej kom tsis txhob muaj xwm txheej.
  • Lawv yog cov yooj yim dua thiab siv tau zoo dua li cov ncu.
  • Nws tuaj yeem raug tsim los pib pyrolysis lub sijhawm thaum cov nqi hluav taws xob qis tshaj.

Pyrolysis yog ib qho tseem ceeb vim nws pab tswj huab cua muaj kuab paug txuam nrog incineration.. Nws kuj tseem pab txo qis cov khoom pov tseg thiab tsim cov khoom pov tseg uas tsis muaj menyuam, uas ua rau lub neej ntev ntawm qhov chaw pov tseg thiab txhim kho cov khoom pov tseg kom zoo. Thaum kawg, nws kuj yog ib txoj hauv kev los hloov ib feem ntawm cov pov tseg rau hauv cov roj uas tuaj yeem khaws cia thiab thauj tau.

Hais txog cov pyrolysis ntawm lignin, kuj yog ib feem ntawm cov ntoo, nws tsim cov tshuaj tsw qab thiab cov ntsiab lus carbon ntau dua, txog 55% ntawm cellulose thiab 20% ntawm cov roj ntoo, 15% tar residue thiab 10% roj.

Nyob rau hauv cov xwm txheej uas hav zoov biomass yog pyrolyzed, nws cov khoom muaj txiaj ntsig zoo heev rau cov khoom tsim. Piv txwv li, lub luag haujlwm ntawm cov dej noo yog txo qis cov txiaj ntsig ntawm cov txheej txheem charring vim tias cov cua sov yuav tsum tau ua kom cov dej ntws tawm thiab ua kom cov pa roj carbon ntau dua thaum cov biomass muaj cov dej noo tsawg. Yog li ntawd, Nws raug nquahu kom cov dej noo ntawm biomass ze li 10%. Qhov ntom ntawm cov khoom noj thawj zaug tseem cuam tshuam rau qhov zoo ntawm cov pa roj carbon monoxide uas yuav tsim los ntawm pyrolysis, thiab hav zoov residues raug pom zoo rau cov pa roj carbon zoo.

Kuv vam tias nrog cov ntaub ntawv no koj tuaj yeem kawm paub ntau ntxiv txog pyrolysis thiab nws cov yam ntxwv.


Cov ntsiab lus ntawm tsab xov xwm ua raws li peb cov ntsiab cai ntawm kev tswj hwm kev ncaj nceesCov. Tshaj tawm ib qho yuam kev nyem no.

Yog thawj tus tuaj tawm tswv yim

Tso koj saib

Koj email chaw nyob yuav tsis tsum luam tawm.

*

*

  1. Lub luag haujlwm rau cov ntaub ntawv: Miguel Ángel Gatón
  2. Lub hom phiaj ntawm cov ntaub ntawv: Tswj SPAM, kev tswj xyuas tawm tswv yim.
  3. Sau raws cai: Koj kev tso cai
  4. Kev sib txuas lus ntawm cov ntaub ntawv: Cov ntaub ntawv yuav tsis raug xa mus rau lwm tus neeg thib peb tsuas yog los ntawm kev txiav txim siab raug cai.
  5. Cov ntaub ntawv khaws cia: Cov Ntaub Ntawv khaws tseg los ntawm Occentus Networks (EU)
  6. Txoj Cai: Txhua lub sijhawm koj tuaj yeem txwv, rov qab thiab tshem tawm koj cov ntaub ntawv.

bool (muaj tseeb)