Nickel-Chromium-Molybdenum Alloys ua li cas hauv Hydrochloric Acid Service piv rau Graphite?

HCl yog nruj rau cov hlau tsis muaj steel thiab cov ntaub ntawv uas muaj zog heev yuav tsum tau siv rau cov khoom siv hluav taws xob hauv cov kev pabcuam HCl. Cov khoom siv feem ntau pom zoo rau HCl cov khoom siv hluav taws xob xws li Hastelloy C-276 thiab impermeable graphite . Qhov kev lag luam tawm ntawm cov neeg kho tshuab kev cia siab thiab kev ua haujlwm thermal yog lub hauv paus rau kev xaiv cov ntaub ntawv no vim tias txhua yam khoom muaj qee yam zoo raws li qhov chaw ua haujlwm.

Hastelloy C-276: Lub zog thiab Ductility rau ib puag ncig hnyav
Hastelloy C-276 yog npib tsib xee-chromium-molybdenum alloy nrog siab tsis kam HCl nyob rau hauv tag nrho cov concentrations txawm boiling daws. Cov hlau no yog tus cwj pwm los ntawm nws cov ductility, kub siab zog thiab weldability ua rau nws haum rau mechanically xav tau chaw. Hastelloy C-276 yog tshwj xeeb tshaj yog pab tau nyob rau hauv kev kub siab thiab kub daim ntaub ntawv uas lwm yam ntaub ntawv xws li stainless hlau los yog carbon hlau yuav tsis muaj peev xwm tiv taus.

Thermal conductivity ~11 W/m-K

Kub Ua Haujlwm: Haum rau HCl kev pabcuam mus txog qhov kub thiab txias (txog 100℃rau concentrated HCl).

Mechanical Properties: Ductile thiab resistant rau mechanical shock, ua rau nws zoo meej rau dynamic systems.

Tus nqi: Nws tsis xav tau rau cov ntawv thov uas cov nqi qis dua yuav txaus vim nws cov nqi siab.

Hastelloy yuav yog cov alloy ntawm kev xaiv hauv cov nroj tsuag tshuaj lossis lwm qhov chaw muaj kev lag luam uas qhov kub thiab kev ntxhov siab ntawm cov neeg kho tshuab siab siab thiab kev ua siab ntev ntev yog qhov tseem ceeb. Nyob rau hauv cov ntaub ntawv no lub zog thiab corrosion kuj ntawm cov khoom yog qhov tseem ceeb tshaj plaws thiab tus nqi pib dua tsis yog li ntawd tseem ceeb.

Graphite yog impervious thiab ua cua sov zoo, tab sis nws yog nkig.
Lwm cov khoom siv rau HCl kub exchangers yog impervious graphite, uas yog feem ntau resin impregnated, vim hais tias nws yog resistant rau hydrochloric acid nyob rau hauv yuav luag tag nrho cov concentrations. Cov txiaj ntsig tseem ceeb ntawm graphite yog cov thermal conductivity tsis tshua muaj siab, uas ua rau muaj txiaj ntsig zoo ntawm kev hloov hluav taws xob thiab ua kom muaj kev sib txuas ntawm cov khoom siv hluav taws xob ntau dua. Qhov no ua rau nws xaiv zoo thaum thermal efficiency tseem ceeb.

Thermal conductivity: 80-120 W / mK (ntau tshaj Hastelloy)

Kub Resistance: Txwv los ntawm resin impregnation, feem ntau mus txog 180 degree. Yog tias qhov kub no dhau mus, cov resin tuaj yeem degrade, uas tuaj yeem cuam tshuam cov qauv kev ncaj ncees ntawm cov khoom.

Mechanical zog: Brittle thiab susceptible rau cracking nyob rau hauv mechanical los yog thermal shock. Qhov no txwv nws txoj kev siv nyob rau hauv siab siab thiab / los yog mechanically demanding applications.

Tus nqi: Thaiv graphite exchangers tseem kim txawm hais tias cov khoom feem ntau muaj tus nqi pib pheej yig dua li Hastelloy C-276.

Ib qho txiaj ntsig tseem ceeb ntawm graphite yog qhov ua tau los tsim cov khoom sib txuas sib txuas, uas ua rau lub tshuab hluav taws xob me me thiab pheej yig dua. Graphite feem ntau yog siv nyob rau hauv qhov kub thiab txias thiab siab qhov xwm txheej uas lub zog txhua yam ntawm Hastelloy tsis tseem ceeb. Nws yog qhov tsim nyog rau kev siv tshuaj lom neeg uas xav tau thermal conductivity thiab kev puas tsuaj rau txhua yam tsis yog qhov teeb meem.

Qhov txawv tseem ceeb: Hastelloy C-276 vs. Impervious Graphite
Cov yam ntxwv tseem ceeb ntawm Hastelloy C-276 thiab impermeable graphite hauv hydrochloric acid cov kev pabcuam tau qhia hauv cov lus hauv qab no:

Hastelloy C-276 PropertiesGraphite Waterproof
Corrosion Resistance Zoo heev tiv thaiv HCl ntawm tag nrho cov concentrationsHCl kuj yuav luag universal
Thermal conductivity ~ 11 W / m · K 80-120 W / mK
Thermal stability Nruab nrab rau siab kub (~ 100℃rau concentrated HCl) txwv los ntawm resin kho (~ 180 degree)
Mechanical Properties tuaj yeem welded, resistant rau mechanical shock Brittle, nquag tawg hauv kev poob siab
Tus Nqi Nqi Them Nqi Them Nqi qis dua tab sis tseem kim
Kev kub siab thiab kub kub tej yam kev mob ApplicationCompact designs, nruab nrab xwm txheej
Hom Kev Kub Kub ExchangerUsed feem ntau nyob rau hauv plhaub thiab raj exchangersTseem siv nyob rau hauv block exchangers
Kev txiav txim siab rau daim ntawv thov
Hastelloy C-276 yog zoo- haum rau siab- kub, siab-siab los yog mechanically xav tau daim ntaub ntawv uas lub zog thiab tsis kam rau thermal shock yog ib qho tseem ceeb. Rau cov ntawv thov uas muaj kev ntseeg siab yog qhov tseem ceeb, Hastelloy feem ntau yog cov khoom xaiv.

Graphite yog siv thaum qhov kev xav tau loj yog thermal conductivity thiab mechanical stresses tsis tseem ceeb heev. Impervious graphite exchangers yog tshwj xeeb tshaj yog txaus nyiam qhov twg compact designs thiab qis pib nqi yog xav tau. Txawm li cas los xij, graphite yog nkig thiab txwv nyob rau hauv qhov kub thiab txias ib puag ncig, uas ua rau nws tsis haum rau cov xwm txheej hnyav dua.

Cov ntsiab lus
Hastelloy C-276 thiab impermeable graphite yog ob qho tib si cov ntaub ntawv tsim nyog siv rau hauv cov khoom siv hluav taws xob hauv cov kev pabcuam hydrochloric acid. Txawm li cas los xij, kev xaiv ntawm nickel alloy lossis graphite raws li qhov nruab nrab ntawm cov khoom siv hluav taws xob rau HCl nyob ntawm cov txheej txheem ntawm tus kheej. Hastelloy muab cov neeg kho tshuab zoo dua qub thiab kub ua haujlwm rau kev kub siab, kev siv kub kub, qhov graphite muab cov thermal efficiency zoo dua thiab cov nqi ua haujlwm zoo rau kev siv me me. Kev xaiv yuav tsum yog nyob ntawm qhov ntsuas kub, siab thiab lub zog ntawm txhua yam uas yuav tsum tau ua.

Tsis muaj ib qho khoom siv zoo dua li lwm yam thiab txhua daim ntawv thov yuav tsum muaj kev ntsuam xyuas ntxaws los txiav txim siab cov khoom siv uas haum rau cov kev xav tau ntawm ib puag ncig kev pabcuam.