1. Hydrogen sulfide yog dab tsi
Hydrogen sulfide yog cov roj tsis muaj xim nrog lub qe rotten tsw. Nws tuaj yeem pom hauv ntau qhov chaw ntuj xws li roob hluav taws, swamps thiab qhov dej kub.
Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qhov siab ntawm hydrogen sulfide tuaj yeem ua rau muaj kev phom sij. Kev raug cov roj ntau ntau tuaj yeem ua rau muaj mob ua pa thiab tuag taus. Yog li ntawd, nws yog ib qho tseem ceeb uas yuav tsum tau ceev faj txog kev nyab xeeb thaum ua haujlwm nrog lossis ib puag ncig hydrogen sulfide.
Qhuav hydrogen sulfide roj tsis muaj corrosive nyhuv, thaum ntub hydrogen sulfide roj los yog tov muaj ib tug muaj zog cracking corrosion nyhuv. Lub siab ib nrab ntawm cov nyhuv corrosion ntawm ntub hydrogen sulfide yog tsawg heev, tsuas yog 350Pa. Qhov concentration ntawm chlorine sulfide nyob rau hauv cov txheej txheem ntawm cov roj thiab roj kev loj hlob yog deb tshaj li qhov no tus nqi, yog li qhov corrosion thiab puas phenomenon ntawm hlau nyob rau hauv lub hydrogen sulfide nruab nrab yog pom tseeb heev.
2. Nws corrode li cas -Hydrogen sulfide electrochemical corrosion txheej txheem
H2S muaj cov dej solubility siab, thiab sai li sai tau thaum nws yaj hauv dej, nws tam sim ntawd ionizes, ua rau cov dej acidic. Lub hydrogen ion generated los ntawm ionization yog ib tug muaj zog depolarizing tus neeg saib xyuas, uas yog ib qho yooj yim mus txeeb electrons nyob rau hauv lub cathode thiab txhawb lub dissolution cov tshuaj tiv thaiv ntawm cov anode hlau, uas ua rau tag nrho corrosion ntawm hlau. FeS ua los ntawm cov tshuaj tiv thaiv anode feem ntau yog txheej tiv thaiv nrog cov qauv tsis zoo, tsis zoo adhesion rau saum npoo ntawm cov hlau, yooj yim poob tawm, yooj yim rau oxidize, yooj yim rau permeated los ntawm chloride ions, thiab lub peev xwm kuj zoo. Yog li raws li cathode thiab steel matrix los ua ib qho kev ua haujlwm microbattery mus txuas ntxiv corrode lub matrix.
3. Cov khoom twg muaj kev cuam tshuam rau corrosion los ntawm hydrogen sulfide
Ib qho ntawm cov khoom lag luam uas tuaj yeem cuam tshuam los ntawm hydrogen sulfide yog hlau. Cov hlau uas ua rau corrosion los ntawm hydrogen sulfide muaj xws li tooj liab, tooj dag, txhuas, thiab hlau. Thaum raug hydrogen sulfide, cov hlau no tuaj yeem hnov mob thiab tsim cov tebchaw uas ua rau lawv cov qauv tsis muaj zog thiab thaum kawg ua rau lwj.
Cov yas kuj tuaj yeem cuam tshuam los ntawm hydrogen sulfide. Qee hom yas, xws li PVC thiab polycarbonate, tuaj yeem ua nkig thiab tawg thaum raug hydrogen sulfide. Qhov no tuaj yeem ua rau xau thiab lwm yam kev puas tsuaj uas tuaj yeem raug nqi kho.
Ntxiv nrog rau cov hlau thiab yas, pob zeb yuav raug cuam tshuam rau corrosion los ntawm hydrogen sulfide. Cov roj tuaj yeem ua rau tsim cov sulfuric acid thaum nws reacts nrog dej uas tau permeated cov pob zeb. Qhov no tuaj yeem ua rau kev puas tsuaj ntawm cov pob zeb thiab poob ntawm cov qauv kev ncaj ncees.
4. Txiav txim siab cov nyhuv ntawm hydrogen sulfide ntawm cov khoom-hydrogen sulfide corrosion test
Hydrogen sulfide test yog ib txoj hauv kev rau kev ntsuam xyuas corrosion ntawm txheej los ntawm kev tsim cov cua nruab nrab uas muaj H2s.
Qhov kev ntsuam xyuas hydrogen sulfide feem ntau yog ua nyob rau hauv chav kuaj. Cov roj H2s yog tsim ncaj qha nrog kev tswj qhov kub thiab txias, thiab tom qab ntawd tov nrog huab cua, kom cov txheej txheem ntawm cov qauv yuav ua rau cov tshuaj tiv thaiv corrosion ntawm qee qhov kub, siab, thiab concentration. Yog li, qhov corrosion kuj ntawm txheej rau hydrogen sulfide industrial cua tuaj yeem soj ntsuam.
Kev kuaj mob ntawm hydrogen sulfide kuaj yuav tsum tau tswj raws li hauv qab no:
Kub: 25 ° ± 2 ° C
Kev txheeb ze av noo: 75% ± 5%
H2s concentration: (10 ~ 15) x10-6 (ntim piv)
5. Hydrogen sulfide corrosion test khoom
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Qhov kub thiab txias 15℃- 80 degree Kub Fluctuation ± 0.5 degree Kub Deviation ± 2.0 degree Humidity Range 30% ~ 98% RH Humidity Deviation ± 1% RH SO2 Concentration 25 ± 5 ppm Huab cua hloov tus nqi 3~5 /h |
LIB Noxious Gas Flow Chamber chav ua haujlwm muaj ob- txheej txheej tsim. Cov txheej sab hauv ntawm lub studio ntawm cov khoom no yog SUS304 steel phaj, thiab txheej txheej yog ua los ntawm corrosion heev-resistant FRP. Qhov no tsis tsuas yog ua kom lub zog ruaj khov ntawm lub thawv, tab sis kuj tseem txhim kho corrosion kuj ntawm chav ua haujlwm, yog li ua rau lub neej ntawm lub tshuab.
LIB's H₂S Corrosion Noxious Gas Test Chamber muab qhov tseeb thiab ruaj khov ib puag ncig tswj kom raug corrosion simulation. Qhov ntsuas kub ntawm 15℃txog 80℃thiab av noo ntawm 30% mus rau 98% RH tso cai rau kev sim hloov pauv raws li ntau yam kev nyab xeeb. Lub SO₂ concentration yog tswj ntawm 25 ± 5 ppm nrog lub siab - gas sensor, xyuas kom ntseeg tau thiab rov ua tau. Tus ntse PID maub los tsis tu ncua saib xyuas thiab kho cov roj concentration, kub, thiab av noo kom tswj tau qhov kev ntsuas ruaj khov thoob plaws hauv lub voj voog.
Lub chamber txhawb nqa ib qho -gas, sequential multi- roj, thiab cov roj sib xyaw ua ke, ua rau nws haum rau H₂S, SO₂, NO₂, NH₃, thiab lwm yam corrosive gases. Adjustable concentration ranges ua rau lub chaw soj nstuam simulate qhov sib txawv ntawm kev lag luam atmospheric ib puag ncig, los ntawm kev raug mob me me mus rau kev ua kom muaj zog corrosion. Qhov kev hloov pauv no ua rau lub chamber zoo tagnrho rau kev kuaj cov txheej txheem, cov hlau, cov khoom siv hluav taws xob, cov khoom siv tsheb, thiab cov ntaub ntawv textile.
Ua nrog SUS304 stainless hlau sab hauv thiab corrosion-cov ntaub ntawv sab nrauv tiv taus, lub chamber xyuas kom ntev -lub sij hawm durability txawm nyob rau hauv cov pa hnyav. Lub 10 cm tuab polyurethane ua npuas ncauj rwb thaiv tsev txhim kho thermal stability thiab lub zog efficiency. Lub tshuab cua compression tub yees nrog cov tub yees ua kom cov cua txias ua haujlwm zoo ib yam, thaum lub tshuab cua sov nichrome muab cov cua sov ruaj khov.
Cov pa roj sib txawv tau ua tiav los ntawm kev ua haujlwm siab tshaj plaws ntawm huab cua nrog 3-5 huab cua hloov hauv ib teev, ua kom txhua tus qauv tau txais kev sib raug zoo. Kho cov qauv rhawv ua los ntawm cov kua qaub-cov hlau tsis muaj zog tso cai rau qhov chaw yooj yim rau qhov sib txawv qhov ntau thiab tsawg. Qhov no guarantees txhim khu kev qha thiab rov ua dua cov kev ntsuam xyuas corrosion thoob plaws tag nrho cov qauv.
Kev nyab xeeb yog qhov tseem ceeb ntawm kev tsim qauv. Ob chav - txheej silicone sealing qauv tiv thaiv cov pa tawm, thiab lub ntsuas hluav taws xob ua kom muaj kev ruaj ntseg thaum kuaj. Cov ua tau -hauv NaOH nruab nrab lub tso pa tso pa tawm tau zoo kho cov roj seem ua ntej tso tawm, tiv thaiv ob tus neeg ua haujlwm thiab ib puag ncig. Tiag -Lub sij hawm saib xyuas cov roj concentration thiab ib puag ncig tsis zoo ntxiv txhim kho kev nyab xeeb ntawm kev ua haujlwm.
Lub chamber ua raws li cov qauv thoob ntiaj teb xws li IEC 60068-2-42 thiab IEC 60068-2-60, kom ntseeg tau tias cov txheej txheem kev xeem raug lees paub thoob ntiaj teb. CE thiab RoHS cov ntawv pov thawj muab kev lees paub ntxiv ntawm cov khoom lag luam zoo thiab kev ua raws cai.
LIB muaj cov kev xaiv kho kom haum raws li cov kev xav tau tshwj xeeb, nrog rau 3- xyoo lav thiab kev txhawb nqa lub neej. Kev xa khoom sai sai li ntawm 7-15 hnub thiab 24/7 lus Askiv- pab pawg neeg hais lus tom qab muag kom ntseeg tau tias muaj kev tshaj lij thiab kev pabcuam thoob ntiaj teb.
Hu rauLIB Industry niaj hnub no kom paub ntau ntxiv txog peb cov H₂S, SO₂, NO₂, NH₃, thiab cov roj sib xyaw ua ke ntawm cov khoom siv hluav taws xob sib xyaw ua ke, thiab tshawb pom tias peb cov kev daws teeb meem ib puag ncig zoo li cas tuaj yeem txhim kho cov kav ntev thiab kev ntseeg siab ntawm koj cov khoom.
