Compressed Oxygen Rau Biogas Production

Kev Ua Haujlwm: Kev siv cov pa compressed hauv biogas ntau lawm

Organic pov tseg
Thaum lub sij hawm tsim cov txheej txheem biogas, cov khib nyiab organic xws li kev ua liaj ua teb thiab hav zoov pov tseg, cov khib nyiab lossis cov dej phwj tuaj nkag rau hauv lub tshuab zom thiab fermented thaum tsis muaj oxygen los tsim cov biogas.

Hydrogen sulfide tiam
Thaum lub sij hawm fermentation ntawm cov organic pov tseg, muaj teeb meem byproducts xws li hydrogen sulfide (H2S) yog tsim. Hydrogen sulfide corrodes cov cuab yeej thiab txo qhov zoo ntawm biogas, yog li nws yuav tsum tau muab tshem tawm.

Oxygen muab
Compressed oxygen yog muab ncaj qha mus rau qhov chaw digester lub taub hau los ntawm lub tshuab hluav taws xob ntawm qhov chaw. Cov pa oxygen feem ntau yog nyob nruab nrab ntawm 90% thiab 95%, uas tau hloov kho raws li qhov xav tau los xyuas kom meej tias tsuas yog cov pa oxygen uas yuav tsum tau muab rau kom tsis txhob pov tseg.

Kev tshem tawm hydrogen sulfide
Oxygen yog pub rau hauv lub digester thiab reacts nrog hydrogen sulfide los tsim cov sulfides uas tsis muaj teeb meem (xws li sulfur), tshem tawm hydrogen sulfide zoo. Cov txheej txheem no txhim kho biogas zoo thiab tiv thaiv cov khoom siv hauv qab.

Biogas collection
Cov biogas tom qab hydrogen sulfide tshem tawm yog sau thiab khaws cia. Cov purified biogas tuaj yeem siv rau kev tsim hluav taws xob, kev tsim hluav taws xob thermal lossis kev lag luam, ntxiv kev paub txog kev siv cov peev txheej zoo.

Gas emission saib xyuas
Cov pa oxygen ntau npaum li cas thiab biogas zoo raug saib xyuas hauv lub sijhawm tiag tiag los ntawm cov sensors thiab kev soj ntsuam xyuas kom ntseeg tau tias tag nrho cov txheej txheem ruaj khov thiab ua haujlwm tau zoo.

Kev tawm tswv yim thiab kho qhov system
Raws li cov ntaub ntawv ntawm lub sijhawm tiag tiag, lub tshuab tsim hluav taws xob ntawm qhov chaw tuaj yeem hloov kho cov pa oxygen kom ntseeg tau tias kev ua kom zoo ntawm hydrogen sulfide tshem tawm efficiency thiab txo cov nqi khiav lag luam.

Puas yog biogas xav tau oxygen?

Biogas cov roj txuas ntxiv uas tsim tau thaum cov khoom siv organic, xws li cov khoom noj lossis tsiaj pov tseg, tawg los ntawm cov kab mob hauv qhov tsis muaj oxygen. Cov txheej txheem no hu ua anaerobic digestion. Txhawm rau ua qhov no, cov khoom pov tseg yuav tsum tau muab kaw rau hauv ib puag ncig uas tsis muaj oxygen.

Vim li cas oxygen khaws cia tawm ntawm lub tshuab hluav taws xob biogas?

Biogas systems siv cov txheej txheem hu ua anaerobic digestion. Cov tshuab no tseem hu ua anaerobic digestion reservoir (Fig. 3). Raws li, thaum lub sij hawm tus txheej txheem ntawm anaerobic digestion, cov kab mob decompose organic teeb meem nyob rau hauv ib qho chaw tsis muaj oxygen.

Vim li cas thiaj yuav tsum tau tiv thaiv oxygen los ntawm kev nkag mus rau biogas digester?

Tsis tas li ntawd, aerobic hloov dua siab tshiab ntawm soluble organic teeb meem rau hauv CO2 los ntawm kev ua pa aerobic yog qhov zoo. Yog li, nws tau ntseeg tias reactor instabilities, qeeb start-ups, tsawg methane yields thiab txawm tag nrho reactor tsis ua hauj lwm yuav tshwm sim vim oxygen nkag mus rau hauv anaerobic digesters.

Dab tsi yog 4 theem ntawm biogas ntau lawm?

Biogas yog tsim los ntawm cov kab mob anaerobic uas degrade organic teeb meem nyob rau hauv plaub theem: hydrolysis, acidification, acetic acid ntau lawm, thiab methane ntau lawm. Cov roj theem khoom ntawm anaerobic digestion yog lub npe hu ua biogas thiab nws cov txiaj ntsig yog nyob ntawm cov substrate (cov khoom siv raw).

Koj ua li cas compressed biogas?

tsim bio-gas los ntawm cov txheej txheem ntawm anaerobic decomposition. Cov pa roj carbon monoxide yog purified kom tshem tawm hydrogen sulfide (H2S), carbon dioxide (CO2), dej vapor thiab compressed li Compressed Bio Gas (CBG), uas muaj methane (CH4) cov ntsiab lus ntawm ntau tshaj 90%.