Vim li cas Siab -Purity Quartz yog cov khoom nyiam tshaj plaws rau Kev Tiv Thaiv -Corrosion Electric Cua Kub Tubes hauv Acidic Industrial Systems?

Cov khoom siv deterioration tseem yog ib qho ntawm cov laj thawj tseem ceeb vim li cas lub tshuab ua haujlwm tsis zoo thiab poob qis hauv cov ntawv thov cua sov uas siv cov kua qaub muaj zog, oxidising agents, thiab siab -kub tshuaj lom neeg. Cov khoom cua sov hlau, tshwj xeeb tshaj yog cov uas ua los ntawm high-tech stainless steels los yog npib tsib xee-raws li alloys, tuaj yeem tau txais pitting corrosion, kev ntxhov siab corrosion tawg, thiab cov phab ntsa nyias nyias yog tias lawv raug rau ib puag ncig hnyav rau lub sijhawm ntev. Nyob rau hauv cov ntsiab lus no, siab -purity quartz tau dhau los ua ib qho kev xaiv nrov rau hluav taws xob cua sov raj uas tsis xeb hauv thaj chaw suav nrog kev ua tshuaj lom neeg, kev tsim khoom siv hluav taws xob, kev kho deg, thiab chav kuaj- qib kua cua sov. Qhov kev xaiv tsis yog raws li lub tswv yim kev lag luam, tab sis ntawm cov khoom siv ntsuas tau zoo, tshuaj lom neeg ruaj khov, thiab kev ua haujlwm ntev -lub sij hawm uas tuaj yeem kwv yees tau.

Chemical Inertness Thaum raug rau cov kua qaub muaj zog
Cov qauv molecular ntawm siab -purity quartz yog dab tsi ua rau nws tshwj xeeb. Fused quartz yog tsim los ntawm lub network ntawm silicon- cov pa sib txuas uas tsim cov amorphous silicon dioxide (SiO₂). Cov ntawv cog lus covalent no muaj ntau lub zog, feem ntau ntau dua 440 kJ / mol, uas ua rau lawv ruaj khov heev. Quartz tsis xav tau passive oxide npog los tiv thaiv nws ntawm corrosion zoo li hlau ua. Nyob rau hauv feem ntau cov xwm txheej acidic, tag nrho cov khoom tseem ceeb yog ib txwm inert.

Rau kev ua lag luam ua neej nyob, siab -purity quartz feem ntau tsis corrode nyob rau hauv cov concentrated nitric acid, sulfuric acid, thiab hydrochloric acid systems hauv qab no txog 200℃. Hauv kev tshawb fawb hauv chav sim immersion, cov txiaj ntsig ntawm qhov poob loj feem ntau tau tshaj tawm tias ze rau qhov ntsuas qhov ntsuas rau lub sijhawm ntev. Qhov kev ruaj ntseg no nres cov txheej txheem electrochemical corrosion xws li galvanic nres thiab hauv zos pitting, uas yog ib txwm nyob rau hauv cov hlau cua sov raj uas raug rau chloride- ib puag ncig nplua nuj.

Ib qho tseem ceeb ntawm cov tshuaj txwv rau quartz yog txuas ntxiv rau cov kev daws teeb meem alkaline muaj zog, tshwj xeeb tshaj yog sodium hydroxide ntawm qhov kub thiab txias, uas tuaj yeem ua rau qeeb decomposition. Tab sis nyob rau hauv acidic industrial systems, quartz khaws nws cov duab thiab lub zog yam tsis tau ua cov khoom siv corrosion uas tuaj yeem nkag mus rau hauv cov txheej txheem nruab nrab.

Stability ntawm cov qauv thiab kev ntseeg siab ntawm mechanics
Ntxiv rau qhov ua rau cov tshuaj tiv thaiv, cov neeg kho tshuab kev ncaj ncees ntawm lub rhaub yog qhov tseem ceeb heev rau nws txoj sia. Raws li kev tswj xyuas, quartz muaj lub zog compressive siab, feem ntau siab dua 1000 MPa, thiab lub zog tensile ntawm 50 thiab 70 MPa. Quartz yog ib txwm nkig ntau dua li cov khoom siv hlau, tab sis nws qhov kev txiav txim siab ua kom tawg ua rau nws muaj peev xwm tsim tau cov khoom siv txhim khu kev qha thaum siv cov txheej txheem kev nyab xeeb thiab kev txhawb nqa.

Hauv daim ntawv thov cua sov immersion, cov kua feem ntau tso rau sab nraud hydrostatic siab ntawm quartz sheath tusyees, uas txo cov concentration ntawm tensile kev nyuaj siab. Thaum cov neeg kho tshuab txuas tiv thaiv qhov chaw thau khoom thiab qaug zog los ntawm kev vibration, quartz hluav taws xob cua sov raj muaj lub neej ua haujlwm ntev nyob rau hauv lub tank corrosive thiab reactors.

Thermal expansion zog kuj pab ua kom cov khoom txhim khu kev qha. Fused quartz muaj tus nqi thermal expansion ntawm li 0.5 × 10⁻⁶ / K, uas yog qis dua cov hlau tsis muaj steel. Qhov qis qis ntawm kev nthuav dav no txo ​​qis qhov nro los ntawm cov cua sov thaum cov khoom kub ceev thiab txias. Nyob rau hauv cov txheej txheem nrog batch kub hloov pauv los yog ua haujlwm tsis tu ncua, tsawg thermal strain txo qis qhov txaus ntshai ntawm cov kab nrib pleb pib thiab kis.

Cov ntaub ntawv pov thawj los ntawm cov txheej txheem tsim cov kua qaub thiab cov da dej electroplating qhia tau tias cov cua sov quartz feem ntau kav ntev dua li cov cua sov hlau. Qhov no feem ntau yog vim qhov corrosion tsis ua rau cov phab ntsa tsis muaj zog, uas ua rau cov txheej txheem tawg.

Tej yam yuav tsum xav txog thaum nws los txog rau thermal kev ua tau zoo thiab lub zog efficiency
Hluav taws xob cua sov raj ua los ntawm siab -purity quartz yuav tsum tsis tsuas yog tiv taus corrosion, tab sis lawv yuav tsum ua kom kub hloov tau zoo. Nyob rau hauv chav tsev kub, quartz muaj thermal conductivity ntawm 1.3-1.5 W / m·K. Tus nqi no yog me dua li cov hlau, tab sis nyob rau hauv immersion systems, convective tshav kub hloov ntawm lub rhaub dej thiab cov kua ib puag ncig yog dab tsi tiag tiag ua rau cua sov ua hauj lwm.

When the surface power densities are set up correctly, the internal heating coil sends energy uniformly to the quartz sheath, which then sends heat outward to the process fluid. Txij li thaum quartz tsis xeb lossis tsim cov nplai hauv cov kua qaub, nws qhov chaw nyob twj ywm du thiab ruaj khov thaum lub sijhawm. Thaum cov khoom siv hlau ua rau cov khoom siv corrosive, lawv feem ntau tau txais cov xwm txheej tsis sib xws uas ua rau nws nyuaj rau cov cua sov kom sib npaug. Qhov no txo ​​qis cov nqi hloov hluav taws xob zoo thiab ua rau muaj kev pheej hmoo ntawm cov cua sov hauv zos.

Corrosion kuj tseem ua rau kev siv hluav taws xob tsis ncaj. Hauv cov tshuab hlau, corrosion-induced nto roughness tuaj yeem nce thermal kuj thiab xav tau kev ua haujlwm siab dua kom cov txheej txheem tso tawm tsis tu ncua. Quartz ua kom nws cov khoom siv thermal ua haujlwm ruaj khov thoob plaws lub sijhawm los ntawm kev ua kom lub ntsej muag zoo ib yam. Qhov kev ruaj ntseg no txo ​​qis txoj hauv kev ntawm qhov kub thiab txias sab hauv, uas tuaj yeem ua rau lub neej luv ntawm cov cua sov kauj.

Tsis tas li ntawd, vim quartz yog qhov tseeb, koj tuaj yeem pom cov cua sov sab hauv. Kev tshawb pom ntxov ntawm cov xim txawv txawv los yog qhov ntsuas ntsuas ua rau nws muaj peev xwm ua kom muaj kev tiv thaiv kev saib xyuas, uas ua rau lub cev ua haujlwm zoo dua thiab txiav tawm qhov tsis tsim nyog kaw.

Kev tswj kom tsis txhob muaj kab mob hauv siab -Purity Siv
Kev tswj kev sib kis yog ib yam tseem ceeb xws li kev tiv thaiv corrosion hauv semiconductor ntub ua, ua tshuaj, thiab dej ultrapure tshuab. Cov khoom siv corrosion los ntawm cov hlau tuaj yeem tso cov ions me me xws li hlau, chromium, lossis npib tsib xee rau hauv cov kua dej. Txawm tias tus nqi ntawm kev sib kis tsawg li ib feem ntawm ib billion tuaj yeem cuam tshuam cov txheej txheem tsim khoom.

High-purity quartz tsis tso cov hlau ions vim nws tsis muaj hlau. High -purity chemical cua sov daim ntawv thov siv tau cov qib hwm ntawm fused quartz vim lawv feem ntau muaj impurity qib qis dua 50 ppm. Qhov tsis muaj galvanic kev sib cuam tshuam thiab kev tsim particle ua rau nws yooj yim dua kom ua tau raws li cov qauv kev tu siab hauv cov chaw tsim khoom siab heev.

Tsis tas li ntawd, quartz tsis tsim oxide nplai txheej los yog flaking residues thaum nws los rau hauv kev sib cuag nrog acidic vapor. Cov yeeb yam no txwv tsis pub cov khoom poob tawm, uas tuaj yeem cuam tshuam cov khoom siv nyob ze lossis cov tshuab lim dej ntxiv rau hauv kab.

Integrating engineering thiab optimizing tsim
High-purity quartz muaj ntau yam txiaj ntsig thaum nws los txog rau kev tiv thaiv corrosion, tab sis nws tsuas ua haujlwm zoo thaum nws raug tsim kho kom raug. To avoid dry-fire circumstances, the surface watt density must match the process medium's ability to move heat. Tsis txaus cov kua dej yog tseem yog ib qho tseem ceeb ntawm quartz rhaub puas vim nws tuaj yeem ua rau overheating.

Kev txhawb nqa tshuab yuav tsum tso cai rau kev nthuav dav thermal yam tsis tau muab tso rau hauv qhov chaw nyuaj uas tsim cov cheeb tsam kev ntxhov siab. Yog tias koj lub cev muaj cov twj tso kua mis los yog cov dej ntws tawm, koj xav tau kev sib cais ntawm kev vibration. Tsis tas li ntawd, lub thickness ntawm phab ntsa yuav tsum tau xaiv xws li tias lawv muaj zog txaus los tuav tab sis tseem cia cov cua sov ntws los ntawm lawv zoo.

Nws yog ib qho tseem ceeb heev kom paub meej thaum ua kev yuav khoom. Nws yog ib qho tseem ceeb kom meej meej qhia cov txheej txheem xws li kev khiav hauj lwm kub, tshuaj muaj pes tsawg leeg, khiav ceev, system siab, thiab txij nkawm ncua sij hawm. Cov yam tseem ceeb no muaj qhov cuam tshuam ncaj qha rau qhov loj ntawm quartz sheath, cov duab ntawm cov cua sov coil, thiab txoj hauv kev los kaw nws.

Xaus: Xaiv cov ntaub ntawv raug raws li txoj hauv kev los txhim kho kev ntseeg tau
High-purity quartz tam sim no yog cov khoom siv zoo tshaj plaws rau cov kav hluav taws xob cua sov uas tsis corrode hauv acidic industrial systems. Qhov no yog vim nws kiag li nres cov electrochemical degradation txoj kev uas hlau muaj. Nws cov molecules ruaj khov, tsawg thermal expansion, kev ua tau zoo txhua yam, thiab tsis muaj cov kab mob ua rau nws txhim khu kev qha ntau dua lub sijhawm.

Yog tias koj xav siv cov kua qaub hnyav, oxidising tej yam kev mob, thiab siab - qauv purity, xaiv quartz immersion heaters yog qhov kev xaiv zoo rau kev ntseeg siab, tsis yog cov khoom hloov pauv. Thaum ua kom haum raws li cov txheej txheem tiag tiag, siab -purity quartz cua sov raj ua haujlwm zoo hauv cov chaw lag luam nyuaj, siv sijhawm ntev, thiab ib txwm muaj zog-nrawm.