Anaerobic digestion ntawm sludge tsis tsuas yog txo cov sludge, tab sis kuj tsim ib tug loj npaum li cas ntawm biogas nrog siab calorific nqi. Biogas yog ib qho yooj yim mus siv tau bioenergy. Nws tuaj yeem siv rau cua sov thiab lub zog tsim hluav taws xob, thiab lwm yam kom paub txog kev siv cov sludge. Cov khoom ntawm biogas system yog raws li nram no:
Gas collecting chamber: Lub chamber khaws roj yog tsim rau saum lub anaerobic digestion reactor. Cov biogas yog coj tawm los ntawm qhov siab tshaj plaws ntawm cov pa roj chamber los ntawm cov kav dej. Lub chamber khaws cov pa roj yuav tsum tuav ib qho ntim; nws muaj peev xwm tswj tau tus txheeb ze stability ntawm biogas siab; nws tuaj yeem tiv thaiv cov kab mob los yog cov kua hauv plab los ntawm kev nkag mus rau cov yeeb nkab biogas. Thaum muaj peb theem cais, nws tseem yuav tsum tau tiv thaiv biogas los ntawm dhia mus rau hauv lub tank sedimentation. Cov roj khaws cia chamber muaj cua nruj kom tiv thaiv biogas los ntawm kev khiav thiab huab cua nkag.
Kev xa tawm thiab kev xa tawm: Lub tshuab xa tawm thiab xa tawm muaj xws li cov kav dej xa hluav taws xob thiab cov kav dej xa hluav taws xob. Lub biogas nruab nrab ntawm cov roj khaws cia chamber thiab lub txee ntim roj yog hu ua lub tank cia roj, thiab cov yeeb nkab biogas nruab nrab ntawm lub txee ntim roj thiab cov neeg siv khoom hu ua cov roj xa hluav taws xob. Cov ntsiab lus ntawm hydrogen sulfide nyob rau hauv cov pa xa hluav taws xob cov yeeb nkab yog siab, thiab kev tiv thaiv corrosion yuav tsum tau ua. Feem ntau, biogas nyob rau hauv cov roj theem ntawm lub digester yog nyob rau hauv ib tug saturated lub xeev nrog chav thiab dej, uas nqa ib tug loj npaum li cas ntawm cov dej, ua rau nws muaj high humidity. Cov av noo ntawm biogas tuaj yeem tsim cov teebmeem nram qab no: dej thiab hydrogen sulfide hauv biogas tsim hydrosulfuric acid rau corrode pipelines thiab khoom siv; dej condenses ntawm lub diaphragms thiab diaphragms ntawm cov khoom siv xws li check li qub, kev ruaj ntseg li qub, flow meters, thiab regulators, cuam tshuam rau lawv qhov tseeb; noo noo tuaj yeem ua rau cov huab cua ntws tawm ntawm cov kav dej; noo noo tuaj yeem txo cov nqi calorific ntawm biogas. Yog li, kev ntsuas dehumidification yuav tsum tau ua nyob rau hauv biogas faib system.
Purification unit: Biogas purification feem ntau suav nrog desulfurization thiab pom. Hydrogen sulfide hauv biogas yog cov roj corrosive. Desulfurization yog tshem tawm hydrogen sulfide hauv biogas, txwv tsis pub cov hydrosulfuric acid tsim los ntawm hydrogen sulfide thiab dej vapor yuav corrode cov cuab yeej lossis cov kav dej thiab txo cov kev pab cuam lub neej. Muaj ob hom desulfurization: qhuav thiab ntub. Qhuav desulfurization yog ua kom tiav ntau txheej ntawm cov khoom nqus dej hauv cov desulfurization ntauwd kom nqus tau thiab desulfurize hydrogen sulfide. Kev ntub dej desulfurization feem ntau siv cov kua nqus dej kom nqus cov hydrogen sulfide hauv biogas hauv cov desulfurization ntauwd. Cov kua nqus dej feem ntau yog txau los ntawm sab saum toj ntawm tus pej thuam nqes mus, thiab cov biogas nce hauv qab ntawm tus pej thuam, thiab hydrogen sulfide nkag mus rau hauv cov kua nqus dej. Tsis hais txog ntawm txoj kev desulfurization, cov nyhuv desulfurization yuav tsum tau kuaj xyuas tsis tu ncua, thiab cov muab tub lim yuav tsum tau hloov los yog cov concentration ntawm cov kua nqus dej yuav tsum tau hloov kho raws sijhawm raws li qhov xwm txheej.
Gas cia txee: Cov khoom siv roj ntau tshaj plaws yog lub thawv ntim roj uas tsis tshua muaj siab. Rau cov chaw kho mob loj, vim muaj qhov ntim ntau lawm, tag nrho cov khoom siv roj av yuav tsum muaj lub peev xwm loj lossis muaj ntau. Raws li qhov xwm txheej no, qee qhov chaw kho mob loj kuj tseem siv lub tshuab hluav taws xob nruab nrab-siab kheej kheej los khaws biogas txhawm rau txo cov peev txheej ntawm cov khoom siv cia.
Nplaim taws ntes: Biogas yog tov nrog ib feem ntawm cov huab cua, thiab nws yuav hlawv nyob rau hauv lub sij hawm thaum nws ntsib ib tug qhib nplaim taws los yog mus txog rau lub ignition kub. Yog hais tias muaj qhov tsis zoo siab nyob rau hauv biogas system, qhov tsis zoo siab tiv thaiv valve yuav qhib, tso cai rau ib feem ntawm cov huab cua nkag mus rau hauv biogas system. Tom qab cov roj sib xyaw ua ke ntawm huab cua thiab biogas mus txog cov ntsiab lus combustion xws li boilers, cav thiab burners los ntawm kev faib khoom, lawv yuav rov qab rau hauv cov yeeb nkab biogas. Backfire yuav ua rau kom kub thiab ua rau cov pa nthuav dav, yog li ua rau cov kav dej thiab cov khoom puas. Hauv cov xwm txheej hnyav, nws yuav ua rau biogas to thiab tawg. Yog li ntawd, cov khoom siv hluav taws xob thaiv yuav tsum tau nruab rau ntawm boilers, cav thiab cov kav dej ua ntej combustion hauv biogas system.
Cov khoom siv roj av: Ntxiv rau kev siv biogas ncig thiab sib tov, biogas feem ntau yog siv los ua cov roj hluav taws xob, xws li rau cov boilers los yog tsav cov roj turbines, thiab lwm yam. Qee zaum, nws yog siv los tsim cov khoom siv tshuaj.
