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One-Stop Solution
Peb lub tuam txhab tau koom ua ke kev tshawb fawb thiab kev tsim kho, tsim khoom thiab muag khoom, cog lus los muab cov neeg siv khoom nrog cov kev pabcuam tag nrho, thiab nruab nrog cov kev pabcuam kev tshaj lij, los ntawm kev tsim khoom mus rau kev xa nkoj, kev pabcuam ib zaug.

Zoo Guaranteed
EB Energy International Limited yog lub tuam txhab muab kev pabcuam tshwj xeeb hauv Marine roj roj thiab cov ntaub ntawv Marine.

Khoom siv Advanced
Peb lub tuam txhab tau nruab nrog ntau yam khoom siv tshaj lij, uas suav nrog txhua yam los ntawm kev tsim khoom precision mus rau kev tswj kom zoo. Cov khoom siv high-end no tsis tsuas yog txhim kho peb cov kev tsim khoom thiab cov khoom lag luam zoo, tab sis kuj tseem ua rau peb ua tau ntau yam kev ua haujlwm thiab kev ua haujlwm zoo.

Pab neeg tshaj lij
Peb cov peev txheej hauv cov cuab yeej siv, ua ke nrog kev txawj ntse ntawm peb pab neeg, ua kom peb muaj peev xwm ua tau raws li qhov kev cia siab thiab kev xav tau ntawm peb cov neeg siv khoom hauv kev lag luam niaj hnub, kev sib tw.

SCR Urea Solution yog dab tsi?

SCR Urea Solution, kev xaiv catalytic txo qis siv urea ua tus neeg sawv cev txo. Tam sim no nws tseem suav tias yog txoj hauv kev zoo tshaj plaws los txo qis NOx emissions los ntawm cov tsheb hnyav, tshwj xeeb tshaj yog cov tsheb thauj khoom. Lub hom phiaj tseem ceeb yog qhov txo qis ntawm qhov xav tau ntawm cov catalyst ntim thaum tseem tswj tau qhov kev xaiv siab rau SCR cov tshuaj tiv thaiv tshaj qhov kub ntau. Lub sijhawm nyob luv luv ntawm cov pa tso pa tawm hauv cov catalyst yuav ua rau muaj kev tso tawm ntau dua ntawm ammonia thiab isocyanic acid los ntawm tus neeg sawv cev txo qis.

Cov teeb meem ntxiv muaj xws li kev tswj hwm lub tswv yim rau urea dosing, qhov siab khov ntawm urea, thiab lub sij hawm ntev stability ntawm cov catalyst.

Adblue Cov

High quality urea tov.
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Safe, non-toxic, non-combustible, pollution-free, nyab xeeb siv thiab thauj.
Scope ntawm daim ntawv thov: Haum rau txhua hom nkoj nruab nrog SCR system uas ua tau raws li IMO Tier lllGB1507-2016 emission qauv.
Cia tej yam kev mob: ventilated thiab txias kom tsis txhob tshav ntuj ncaj qha.
24-teev xaj hotline: 86-0532-82831800.

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Marine Urea Solution

Marine Aqueous Urea Solution

Cov txiaj ntsig ntawm SCR Urea Solution

SCR Urea Solution yog ib txoj hauv kev los hloov cov nitrogen oxides, tseem hu ua NOx emissions, rau hauv tsis muaj nitrogen (N2) thiab dej (H2O) los ntawm kev siv lub catalyst system. Cov txheej txheem no tseem ceeb heev vim tias NOx yog ib feem tseem ceeb ntawm smog thiab kua qaub los nag thiab yog ib qho tseem ceeb rau cov nyhuv tsev cog khoom. Nws qhov tseem ceeb yuav pab tig daim ntawv thov mus rau hauv lub tsheb ntxuav kom huv, thaum tseem tswj tau yooj yim thiab kev xaiv roj.

• Siv tau NOx txo. SCR tuaj yeem txo NOx emissions txog li 90%.

• Roj Efficiency. SCR thev naus laus zis tso cai rau cov tshuab ua haujlwm tau zoo dua, yog li txuag roj.

• Lub neej ntev. SCR systems yog tsim los ua kom lub neej ntev ntawm lub tsheb lossis daim ntawv thov nrog kev pabcuam zoo.

SCR Urea Solution Ua Haujlwm Li Cas?

SCR Urea Solution ua haujlwm hauv ob peb kauj ruam los txo NOx emissions:

Exhaust Gas nkag mus rau hauv lub system

Cov pa hluav taws xob uas muaj NOx raug xa mus rau SCR catalyst.

Kev txhaj tshuaj ntawm DEF

DEF yog txhaj rau hauv cov kwj deg. Cov cua sov los ntawm lub tso pa converts DEF rau ammonia (NH3).

Tshuaj tiv thaiv

Ammonia reacts nrog NOx nyob rau hauv lub xub ntiag ntawm lub catalyst. Cov tshuaj tiv thaiv no tawg NOx rau hauv nitrogen thiab dej vapor.

Kev Tso Tawm

Cov pa paug huv huv, tam sim no muaj cov pa tsis zoo nitrogen thiab dej, raug tso tawm rau hauv qhov chaw.

Dab tsi yog qhov tshwj xeeb xav txog kev siv SCR Urea Solution?

SCR Urea Solutions yog cov tshuab ua haujlwm. Piv nrog rau cov khoom siv hluav taws xob tsis zoo ntawm cov tsheb roj av, SCR cov tshuab yuav tsum tau muab cov Diesel Exhaust Fluid (DEF) ntxiv rau ib ntus kom ntseeg tau tias cov pa hluav taws xob ua haujlwm tau zoo. Qhov yuav tsum tau rov ua dua DEF yog ncaj qha ntsig txog kev siv roj tsheb. Kev ua tsis tiav ntawm DEF tso tsheb hlau luam tuaj yeem ua rau lub tsheb lossis lub tshuab tsis tuaj yeem thiab yuav tsum muaj kev pabcuam.

Diesel Exhaust Fluid (DEF) yog cov kua dej tsis muaj tshuaj lom uas muaj 32% qib tsheb aqueous urea thiab dej huv. DEF muaj nrog ntau yam kev khaws cia thiab xa tawm. Kev xaiv khaws cia muaj ntau yam ntim ntim xws li cov khoom ntim, cov totes thiab lub raj mis lossis jugs. Lub koom haum American Petroleum tau sim DEF kom ntseeg tau tias nws ua tau raws li cov qauv kev lag luam thoob plaws. DEF qee zaum hu ua AdBlue hauv Tebchaws Europe thiab hauv Asmeskas.

DEF thoob ntiaj teb kev faib khoom tsim kho yog nyob rau hauv qhov chaw ua DEF tau yooj yim muaj nyob rau hauv ntau, ntawm cov khw muag khoom, hauv online thiab yuav luag txhua qhov chaw nres tsheb roj uas nqa roj diesel. On-board tso tsheb hlau luam los khaws DEF feem ntau nyob rau hauv qhov loj ntawm 5 mus rau 22 nkas loos thiab tau yooj yim txheeb xyuas los ntawm lub kaus mom xiav thiab / los yog sau npe "DEF nkaus xwb." Rau cov tsheb thauj khoom thiab SUVs, DEF muab qhov chaw nres nkoj feem ntau yog nyob ib sab ntawm thaj tsam ntawm cov roj filling nozzle. Rau cov tsheb laij teb hnyav hnyav, lub DEF tank feem ntau yog ib sab ntawm lub tank roj diesel nyob rau sab ntawm lub tsheb ze ntawm tus neeg tsav tsheb lub qhov rooj. Vim muaj ntau haiv neeg ntawm off-road engines thiab khoom siv, qhov chaw ntawm DEF tank thiab muab tub lim chaw nres nkoj yog sib txawv.

Vim li cas SCR Urea Solution tseem ceeb rau peb txoj kev lag luam?

SCR thev naus laus zis yog ib qho kev daws teeb meem pheej yig tshaj plaws thiab siv roj rau kev txiav emissions los ntawm diesel xyaw. Thaum SCR thev naus laus zis tuaj yeem raug nqi kim los siv, nws suav hais tias yog qhov kev daws teeb meem zoo rau lub sijhawm ntev vim nws tso cai rau cov tuam txhab ua kom tau raws li cov kev cai emissions yam tsis tas yuav hloov tag nrho cov tshuab cav, uas tuaj yeem kim dua hauv txoj kev.

NOx emissions txo cov thev naus laus zis zoo li SCR tuaj yeem txhim kho kev siv roj hauv cov tshuab hluav taws xob, vim tias lub cav tsis tas yuav ua haujlwm hnyav los txo nws tus kheej emissions, ua rau kev siv hluav taws xob tsawg.

SCR Urea Solution ua dab tsi?

SCR Urea Solution yog siv rau hauv Selective Catalytic Reduction (SCR) system los txo NOx cov pa phem hauv cov pa pa tawm los ntawm lub tshuab hluav taws xob. Urea yog txhaj tshuaj raws li cov kua dej. Nyob rau hauv cov tshuaj, ammonia (NH3), uas yog tsim los ntawm hydrolysis ntawm urea nyob rau hauv lub mixing trajectory, yuav hnov mob nrog NOx nyob rau hauv cov catalytic ntsiab thiab hloov mus rau hauv dej vapor thiab nitrogen gas.

Cov txheej txheem hloov dua siab tshiab tuaj yeem nthuav tawm hauv cov qauv yooj yim hauv qab no:
CO(NH2)2 + H2O → 2NH3 + CO2
4NO + 4NH3 + O2 → 4N2 + 6H2O

Urea tuaj yeem raug txhaj rau hauv SCR system hauv ntau txoj kev daws teeb meem. Cov kev daws teeb meem no muaj cov qauv kev lag luam los ntawm ISO. Feem ntau siv urea daws nyob rau hauv kev lag luam maritime yog AUS32 (ISO22241) thiab AUS40 (ISO18611). Ntawm no, AUS40 muaj 40% urea hauv dej.

Qhov sib txawv ntawm kev siv ob qho kev daws teeb meem SCR urea yog nyob rau hauv tus nqi siv rau lub cav. Feem ntau, kev taug kev hauv av tuaj yeem bunker urea ntawm ntau zaus dua li ntawm cov nkoj hauv hiav txwv. Yog li ntawd, AUS40 feem ntau yog siv rau kev siv seagoing.

Yuav khaws SCR Urea Solution li cas?

Txhawm rau khaws SCR Urea Solution kom ruaj ntseg thiab ruaj ntseg, ua raws li cov lus qhia no:

- SCR Urea Solution yuav tsum nco ntsoov muab khaws cia rau hauv lub thawv ob daim tawv nqaij kom tiv thaiv kom tsis txhob xau.

- SCR Urea Solution yuav tsum muab khaws cia rau hauv cov tso tsheb hlau luam tshwj xeeb uas tsim los rau AdBlue cia thiab ua raws li cov qauv tsim, nrog kev tiv thaiv los ntawm kev puas tsuaj ntawm lub tank.

- SCR Urea Solution yuav tsum muab khaws cia ntawm qhov kub thiab txias, nruab nrab ntawm 0-30oC. Tiv thaiv koj tus AdBlue los ntawm qhov txias txias ntawm qis dua 11oC, thiab tsis txhob cia AdBlue nyob rau hauv tshav ntuj ncaj qha.

Yuav Ua Li Cas Nrog SCR Urea Solution?

01/

SCR Urea Solution yog cov dej tsis muaj teeb meem, yooj yim rau kev khiav lag luam. Nws tsis yog ib qho roj, lossis roj ntxiv, tab sis muaj cov tshuaj purity urea siab uas yuav tsum tau muab cia rau hauv lub tank siab DEF (sib cais rau lub tank diesel), uas yog refilled raws li / thaum xav tau. Feem ntau, DEF tank thiab roj tank yog qhov sib npaug, thiab yuav khoob ntawm tus nqi tib yam. Yuav kom tswj tau cov khoom tsim nyog, cov neeg ua haujlwm yuav tsum rov ua dua lub tank DEF txhua zaus lawv refuel.

02/

Ib qho 32.5% urea concentration yuav tsum tau khaws cia hauv DEF kev daws teeb meem rau kev ua haujlwm zoo ntawm kev tswj cov emissions. SCR txo cov qib ntawm NOX siv ammonia raws li kev txo qis hauv cov kab ke catalyst. Yog tias qhov concentration qis dua, ammonia tsawg dua. Cov kev tswj xyuas meej meej rau kev txhaj tshuaj ntawm DEF rau SCR system yuav tsum nyob rau hauv qhov chaw kom tau txais kev txhaj tshuaj DEF kom tau txais NOX txo qis, thaum tswj NH3 plam.

03/

Cov kev daws teeb meem zoo tshaj plaws kom tswj tau qhov kev pom zoo DEF concentration yog kaw lub voj tswj lub tshuab uas tsis tu ncua saib xyuas qhov nkag thiab qhov hluav taws xob NOX emissions. Feem ntau cov tshuab tswj kev txhaj tshuaj tuaj yeem tswj cov kev hloov pauv me me. Yog tias tus neeg teb xov tooj pom tias qhov concentration ntawm cov urea tawm ntawm qhov tshwj xeeb thiab yuav tsum tau hloov kho, sab laj nrog koj tus neeg muag khoom DEF ntawm txoj kev zoo tshaj plaws rau koj qhov chaw los kho qhov teeb meem no. Hauv qab no yog ob peb txoj kev qhia dav dav.

04/

Yog tias urea concentration yog 40-50%, nws yog qhov zoo tshaj rau ntxiv dej deionized rau lub tank hauv increments ntawm 10% ntawm qhov ntim ntawm DEF nyob rau hauv lub tank, kom txog rau thaum nws nyob rau hauv specification. Tsis txhob siv kais dej. Yog tias DEF concentration siab dua 50% (feem ntau crystalized urea tam sim no nyob rau hauv lub tank), nws yog qhov zoo tshaj los ntxuav tawm lub DEF system thiab pib nrog tshiab DEF.

05/

Siv cov kab cua sov thiab lub tank tso cua sov kom lub DEF saum toj no lub caij ntuj no lub caij ntuj no. Feem ntau DEF lub tank yog insulated kom txo cov cua kub ntawm lub tank. Nws yog qhov zoo tshaj plaws los siv lub tshuab nqus tsev / lub qhov cua uas qhib thiab kaw thaum muaj kev hloov hauv siab. Qhov no yuav txwv tsis pub evaporation ntawm cov dej hauv DEF thiab pab kom cov concentration tas li nyob rau lub sijhawm.

06/

Nco ntsoov khaws DEF hauv High Density Polyethylene (HDPE) lossis stainless-steel tanks. Txij li thaum DEF reacts nrog tooj liab, xyuas kom meej txawm tias kev sib txuas siv cov ntaub ntawv tsim nyog xws li stainless hlau. Yog tias tooj liab siv rau ntawm kev sib txuas nws tuaj yeem pom tau yooj yim, vim DEF yuav hloov mus rau xim xiav sai. DEF tuaj yeem nkag los ntawm kev sib txuas. Yog tias DEF qhuav thiab tsim cov muaju, tsuas yog siv dej sov thiab cov ntaub qhwv kom tshem tawm.

Dab tsi yog Tshuaj Reaction ntawm SCR Urea Solution?

Selective catalytic reduction (SCR) raws li nyob ib ncig ntawm urea yog tam sim no siv nyob rau hauv European heavy-duty diesel daim ntaub ntawv thiab yog tsim rau siv nyob rau hauv lub teeb-lub luag hauj lwm diesel daim ntawv thov tsom rau US Tier 2 Bin 5 thiab hauv qab no thiab Euro 6 emissions txoj cai. Ib qho khoom siv ntawm lub nkoj ntawm aqueous urea (32.5 wt% urea hauv dej) yog xav tau rau kev tswj NOx.

Aqueous urea yog txhaj rau hauv cov pa tawm ntawm SCR catalyst. Cov urea tau txais cov tshuaj tiv thaiv hydrolysis (urea ntxiv rau cov dej tsim cov ammonia thiab carbon dioxide) kom xa cov ammonia rau hauv cov pa ntws. Ammonia yog ib qho zoo reductant rau NOx nyob rau hauv cov pa oxygen ntau tshaj nyob rau hauv lean kev khiav hauj lwm roj av cav thiab yog li ntawd muaj peev xwm yuav siv tau rau LBDI-hom kev siv. Cov ammonia tsim tau khaws cia rau ntawm SCR catalyst thiab reacts nrog cov pa ntws ntawm NOx los tsim nitrogen thiab dej.

Peb lub Hoobkas

EB Energy International Limited yog lub tuam txhab muab kev pabcuam tshwj xeeb hauv Marine roj roj thiab cov ntaub ntawv Marine. Txhawm rau ua raws li MARPOL cov cai, lub tuam txhab pib tsim thiab muag Marine urea cov kev daws teeb meem los ntawm 2021. Tom qab ntau tshaj li ib xyoos ntawm kev tsim khoom lag luam, peb tau sau ntau lub nkoj xa khoom thiab ua tiav kev koom tes nrog cov tswv nkoj xws li WANHAI thiab EVERGREEN. nrog rau cov tuam txhab tswj xyuas nkoj xws li BSM.

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Peb Cov Khoom Siv

Peb Daim Ntawv Pov Thawj

Qhov kawg FAQ Qhia rau SCR Urea Solution

Q: SCR urea daws txo NOx li cas?

A: SCR tshuab rau txo NOx emissions: Selective catalytic reduction (SCR) yog ib lub tshuab siv los txo cov theem ntawm nitrogen oxides (NOx) nyob rau hauv lub xub ntiag ntawm catalyst. Vaporized reagent (Ammonia lossis Urea) raug txhaj rau hauv cov pa roj thiab ua rau cov NOx ntawm SCR catalyst ua rau nitrogen (N2) thiab dej (H2O).

Q: Dab tsi yog qhov txawv ntawm qhov hloov pauv catalytic thiab SCR urea tov?

A: Thaum cov catalytic converters ua zoo li lub lim uas cuam tshuam cov emissions, SCR systems nquag txhaj Diesel Exhaust Fluid (DEF) rau hauv cov pa, uas chemically reacts nrog nitrogen oxides (NOx) los tsim tsis muaj nitrogen thiab dej.

Q: Dab tsi yog kev siv urea hauv SCR urea tov?

A: SCR urea tov tau raug coj los ua NOx txo cov tswv yim los ntawm ntau hom mobile diesel xyaw. Urea-SCR systems feem ntau suav nrog SCR catalyst, ib qho kev pab cuam oxidation catalyst, thiab urea txhaj tshuaj uas muab cov tshuaj urea dej ntws los ntawm SCR catalyst.

Q: SCR urea daws tshem tawm NOx li cas?

A: Ib qho dej-raws li urea tov yog txhaj rau hauv cov pa tso pa. Los ntawm no, cov pa pa tawm ntws los ntawm ib qho array ntawm catalytic ntsiab uas NOx hloov mus rau dej vapor thiab nitrogen gas. Cov pa pa tawm ces ntws tawm ntawm pawg. Qhov system no feem ntau hu ua SCR Urea system.

Q: Yuav siv SCR Urea Solution li cas hauv diesel xyaw?

A: SCR Urea Solution yog khaws cia rau hauv lub tank cais hauv lub tsheb thiab tau txais kev txhaj tshuaj rau hauv SCR system. Tus nqi ntawm UREA siv yog nyob ntawm tus nqi ntawm NOx tsim nyob rau hauv lub cav. Feem ntau, 32.5% tov ntawm UREA hauv dej distilled yog siv. Nws yog ib qho tseem ceeb uas yuav tsum tswj kom muaj qib ntawm UREA hauv lub tsheb lub tank kom ntseeg tau tias SCR system ua haujlwm zoo. Feem ntau cov tsheb niaj hnub nrog SCR systems muaj qhov ntsuas ntawm lub dashboard uas qhia txog qib UREA hauv lub tank.

Q: Cov tshuaj dab tsi ua SCR urea tov hloov NOx rau hauv?

A: Nws yog hu ua "xaiv" vim tias nws txo qis qib ntawm NOx siv ammonia ua ib qho kev txo qis hauv cov txheej txheem catalyst. Cov tshuaj tiv thaiv tshuaj hu ua "txo" qhov twg DEF yog tus neeg sawv cev txo qis uas cuam tshuam nrog NOx los hloov cov pa phem rau hauv nitrogen, dej, thiab me me ntawm CO2.

Q: Dab tsi yog qhov zoo ntawm SCR urea tov tshaj EGR?

A: SCR system tsis cuam tshuam rau qhov zaus thiab tus nqi ntawm cov kev pabcuam, tsis zoo li EGR system uas muaj cov nqi kho mob ntxiv. Ntau zaus cov roj thiab cov ntxaij lim dej hloov thaum cov roj xav tau rau EGR thev naus laus zis yog qhov zoo uas txhais tau tias tus nqi siab piv rau SCR thev naus laus zis. Txo roj noj.

Q: SCR Urea Solution sawv rau dab tsi?

A: Selective Catalytic Reduction (SCR) yog ib qho kev hloov pauv nitrogen oxides, tseem hu ua NOx emissions, mus rau hauv tsis muaj nitrogen (N2) thiab dej (H2O) los ntawm kev siv lub tshuab catalyst. Cov txheej txheem no tseem ceeb heev vim tias NOx yog ib feem tseem ceeb ntawm smog thiab kua qaub los nag thiab yog ib qho tseem ceeb rau cov nyhuv tsev cog khoom. Nws qhov tseem ceeb yuav pab tig daim ntawv thov mus rau hauv lub tsheb ntxuav kom huv, thaum tseem tswj tau yooj yim thiab kev xaiv roj.

Q: Dab tsi yog qhov tseem ceeb ntawm SCR Urea Solution hauv emission txo?

A: SCR thev naus laus zis yog qhov tseem ceeb rau kev ua raws cai thiab kev tiv thaiv pej xeem kev noj qab haus huv thiab ib puag ncig. Los ntawm kev txo qis NOx emissions, SCR systems pab tiv thaiv kev tsim cov ozone hauv av thiab cov khoom zoo, uas ua rau muaj kev phom sij rau kev ua pa.

Q: SCR Urea Solution ua haujlwm li cas?

A: SCR kho cov pa tawm ntawm lub cav. Cov kua dej me me ntawm cov kua roj (DEF) raug txhaj rau hauv cov pa ua ntej lub catalyst, qhov twg nws vaporizes thiab decomposes rau ammonia (NH3) thiab carbon dioxide (CO2). NH3 yog siv ua ke nrog SCR catalyst thiab hloov NOx mus rau tsis muaj nitrogen (N2) thiab dej (H2O).

Q: Dab tsi yog qhov zoo siv SCR Urea Solution?

A: Lub tshuab ua haujlwm hnyav uas siv SCR tau txais kev txhim kho kev lag luam roj, txog li 5%. SCR catalyst tshuab tso cai ntau dua NOx hloov dua siab tshiab, yog li lub cav tuaj yeem ua kom zoo dua qub, uas pab txhawb kev txhim kho roj kev lag luam. Lwm qhov txiaj ntsig rau kev txhim kho roj siv yog tsis tshua muaj Diesel Particulate Filter (DPF) tu, txo nqi ntxiv.

Q: Dab tsi yog cov tshuaj tiv thaiv ntawm urea hauv SCR urea tov?

A: Ib qho khoom siv ntawm cov dej urea (32.5 wt% urea hauv dej) yog xav tau rau kev tswj NOx. Aqueous urea yog txhaj rau hauv cov pa tawm ntawm SCR catalyst. Cov urea tau txais cov tshuaj tiv thaiv hydrolysis (urea ntxiv rau cov dej tsim cov ammonia thiab carbon dioxide) kom xa cov ammonia rau hauv cov pa ntws.

Q: Puas yog SCR urea tov degrade raws sijhawm?

A: Urea yog ib qho ruaj khov molecule nrog ib nrab-lub neej (t½) ntawm kwv yees li 40 xyoo ntawm 25 degree, thiab yog li ntawd, nws tsis yog spontaneously hydrolyzed (degraded) hauv kev daws.

Q: Lub txee lub neej ntawm SCR urea tov yog dab tsi?

A: Lub neej txee ntawm 40% Marine Urea tov yog nyob ib ncig ntawm 18 lub hlis thaum khaws cia ntawm 0 txog 25 degree (los yog hauv Fahrenheit, 32 txog 77 degree F). Hauv qab no yog qhov kwv yees lub neej txee ntawm Marine Urea Solution raws li qhov nruab nrab cia kub.

Q: Dab tsi yog qhov ruaj khov ntawm SCR urea tov?

A: Kev txheeb xyuas kev ruaj ntseg qhia tau tias urea ruaj khov dua ntawm pH ntau ntawm 4-8 thiab qhov ruaj khov ntawm urea txo qis los ntawm qhov kub thiab txias rau txhua qhov pH.

Q: Puas yog SCR urea tov decompose ntawm chav tsev kub?

A: Thawj qhov ntsuas kub ntawm chav tsev kub txog 190 degree suav nrog urea melting thiab vaporization pib ntawm 133 degree. Nrog nce kub, urea decomposes rau ammonia thiab isocyanic acid, tom kawg ua rau biuret, cyanuric acid thiab ammelide tsim.

Q: Puas yog SCR urea tov tawm?

A: Lub sijhawm lav zoo ntawm aqueous urea daws txo qis linearly nrog qhov ntsuas kub. Thaum qhov ntsuas kub yog 35 degree, lub sijhawm lav zoo tsuas yog 6 lub hlis. Thaum qhov ntsuas kub siab tshaj 35 degree, nws raug nquahu kom kuaj xyuas cov alkalinity thiab lwm yam ntsuas ua ntej siv.

Q: Puas yog SCR urea tov yaj hauv dej?

A: Urea dissolves hauv dej yooj yim heev. Nws yog yooj yim heev soluble nyob rau hauv dej vim hydrogen bonds, raws li ib tug tshwm sim ntawm nws tsim nrog dej. Kuv yuav tsum yaj urea hauv dej, 1079 g / L ntawm 2 ºC.

Q: Koj khaws SCR urea kua tov rau qhov twg?

A: Cov khoom yuav tsum muab cia rau hauv chav tsev kub. Urea cov kev daws teeb meem yuav tsum tau npaj tshiab tshiab thiab siv, vim tias cov kev daws teeb meem ntawm urea tuaj yeem tsim muaj qhov tseem ceeb ntawm cov reactive cyanate ions thaum sawv.

Q: Dab tsi yog kev ceev faj rau SCR urea tov?

A: Kev ceev faj rau kev nyab xeeb. Tsis txhob: Aerosol los yog huab cua tsim.
Cov lus qhia txog kev ua haujlwm tu cev. Khaws kom deb ntawm cov khoom noj, dej haus thiab tsiaj pub noj.
Cov xwm txheej rau kev ruaj ntseg cia, suav nrog txhua qhov tsis sib xws.
Cov tshuaj tsis sib xws lossis cov khoom sib xyaw.
Cov qauv tsim tshwj xeeb rau chav cia lossis cov nkoj.
Tshwj xeeb kawg siv (s).

Cim npe nrov: Tuam Tshoj scr urea tov lwm tus neeg, hoobkas