JMFILTEC Heat Exchanger Pipe muaj qhov tshwj xeeb ntawm kev hloov pauv hluav taws xob thiab qhov loj me, lawv muab cov txiaj ntsig ntau dua li cov khoom siv hluav taws xob sib pauv.
Tsis tsuas yog ua silicon carbide tshav kub exchangers txuag ib tug whopping 70% ntawm installation qhov chaw piv rau iav lined heat exchangers, tab sis lawv compact loj kuj txhais tau hais tias lawv xav tau ib tug me me tshav kub exchanger cheeb tsam kom ua tau raws li tib theem ntawm tshav kub hloov.
Lwm qhov zoo dua ntawm SiC Heat Exchanger Pipes yog lawv qhov yooj yim ntawm kev tshem tawm, uas ua rau kev ntxuav thiab tshuaj xyuas kom yooj yim. Qhov no txhais tau tias koj tuaj yeem ua kom koj cov cuab yeej ua haujlwm zoo nrog cov nqi kho tsawg.
Khoom zoo
Zoo heev thermal conductivity
Zoo heev corrosion kuj
Zoo heev kub tsis kam thiab thermal shock kuj
High hardness thiab hnav tsis kam
Yooj yim los ntxuav thiab tu
Compact tsim thiab siv qhov chaw
Tej teeb meem thiab kev daws teeb meem rau Silicon Carbide (SiC) Heat Exchanger Tubes
Silicon carbide heat exchanger tubes, nrog rau lawv cov kub tsis kam, corrosion kuj, siab thermal conductivity, thiab zoo heev thermal poob siab kuj, yog dav siv nyob rau hauv hnyav kub pauv tej yam kev mob nyob rau hauv tshuaj lom neeg, metallurgical, tshiab zog, thiab tshuaj industries (xws li tshav kub pauv nyob rau hauv muaj zog acid thiab alkali media, high{0}}kub flue gas pov tseg thaum tshav kub kub rov qab } porsalt evaporation dej. Cov hauv qab no yog cov teeb meem tshwm sim, ua rau kev tsom xam, thiab cov phiaj xwm kev daws teeb meem thoob plaws tag nrho cov txheej txheem ntawm kev xaiv, kev teeb tsa, kev ua haujlwm, thiab kev saib xyuas:
I. Cov teeb meem xaiv thiab cov khoom sib xws
1. Dab tsi yog cov khoom siv ntawm silicon carbide tshav kub exchanger raj? Yuav ua li cas kom phim lawv nrog cov kev sib txawv kub sib txawv?
Kev lag luam silicon carbide tshav kub pauv cov raj feem ntau muab faib ua ob hom khoom siv, nrog rau qhov sib txawv tsim nyog thov scenarios:
- Reaction-Sintered Silicon Carbide (RSiC): Tus nqi siab-effectiveness, thermal conductivity ntawm kwv yees li 80 ~ 120 W/(m·K), acid thiab alkali resistant, kub resistant (ntev-lub sij hawm ua hauj lwm kub tsawg tshaj li los yog sib npaug zos rau 1350 degree), haum rau feem ntau cov khoom siv hluav taws xob, cov khoom siv hluav taws xob thiab cov khoom siv hluav taws xob tej yam kev mob.
- Pressureless Sintered Silicon Carbide (SSiC): Siab purity, thermal conductivity mus txog 150 ~ 200 W / (m·K), superior txhua yam muaj zog thiab corrosion kuj, siab kub resistant (ntev -lub sij hawm ua hauj lwm kub tsawg tshaj li los yog sib npaug rau 1450 degree), haum rau huab cua tej yam kev mob xws li high fluorescent concentrated media thiab acid acid (piv txwv li, high fluoroconcentric media thiab acid). (xws li, pov tseg thaum tshav kub kub rov qab los ntawm cov thee chemical gasification furnaces). Kev xav tsis zoo: Siv RSiC cov raj xa hluav taws xob los tswj cov xov xwm corrosive xws li hydrofluoric acid thiab fluorides tuaj yeem ua rau lub raj phab ntsa corrosion thiab perforation. Kev daws: Rau fluorine- muaj cov xov xwm thiab muaj zog oxidizing acids, SSiC cov khoom yuav tsum tau ua ntej, thiab los tiv thaiv-corrosion coating composite kho yuav tsum tau siv thaum tsim nyog.
2. Dab tsi yog qhov kev txiav txim siab rau kev xaiv cov kev qhia tshwj xeeb (inch, phab ntsa thickness) ntawm silicon carbide tshav kub txauv raj?
- Pipe Diameter: Standard tube diameters yog Φ20 ~ Φ100 mm. Cov kab me me (Φ20 ~ Φ40 mm) muaj qhov sib txawv ntawm qhov kub thiab txias dua thiab ua haujlwm siab dua, haum rau qis - ntws, siab - qhov kub thiab txias tswj cov xwm txheej. Cov kab loj dua (Φ50 ~ Φ100 mm) muaj qhov cuam tshuam zoo dua thiab tsis tshua muaj kev cuam tshuam, haum rau kev sib pauv cua sov ntawm cov xov xwm uas muaj cov khoom thiab cov viscosity siab (xws li pov tseg thaum tshav kub kub rov qab los ntawm metallurgical slurry).
- Phab ntsa Thickness: Txheem phab ntsa thickness yog 3 ~ 10 hli. Cov phab ntsa tuab ua rau muaj zog dua txhua yam, tab sis qis dua thermal conductivity. Rau siab - kub thiab siab - kev siv siab, phab ntsa tuab ntawm 6-10 mm raug pom zoo, thaum qis - qhov kub thiab txias thiab ib txwm siv-siab, phab ntsa thickness ntawm 3-5 mm yog haum.
Cov teeb meem tshwm sim: Nyias- cov phab ntsa hloov pauv cua sov ua rau muaj kev hnav nyob rau hauv siab - nrawm tshaj tawm xov xwm. Kev daws: Thaum siv cov xov xwm uas muaj cov khoom, xaiv tuab - cov phab ntsa phab ntsa thiab nruab ib qho kev tiv thaiv -scouring thiab flow- coj cov cuab yeej ntawm qhov nkag.
II. Teeb meem kev teeb tsa thiab sealing
1. Yuav ua li cas los daws teeb meem thiab daws cov sealing leaks tom qab silicon carbide kub exchanger tube installation?
- Teeb meem tshwm sim: Hauv lub plhaub- thiab - cov khoom siv hluav taws xob sib hloov, cov khoom xa tawm tshwm sim ntawm kev sib txuas ntawm silicon carbide tshav kub pauv cov raj thiab cov ntawv raj, uas ua rau kev sib xyaw ntawm cov khoom siv hluav taws xob sib hloov nruab nrab thiab txo qis hauv kev sib pauv cua sov.
- Ua rau Kev Ntsuas: Kev xaiv cov qauv sealing tsis tsim nyog (piv txwv li, siv cov roj hmab zoo tib yam rau siab - qhov kub thiab txias); kev nyuaj siab concentration thaum lub sij hawm lub raj ntawv vuam, ua rau tawg ntawm qhov kawg ntawm lub tshav kub exchangers raj; impurities nyob rau hauv lub sealing nto, ua rau tsis zoo adhesion.
- Kev daws teeb meem:
- For high-temperature conditions (>200 degree), siv fluororubber lossis hlau kauv qhov txhab gaskets. Rau qhov kub siab heev - qhov kub thiab txias, siv lub welded foob + expansion sib koom ua ke cov qauv them nyiaj.
- Ntxuav lub sealing nto ntawm weld slag thiab cov khib nyiab ua ntej kev teeb tsa kom ntseeg tau tias qhov chaw du.
- Siv cov txheej txheem kho kom yooj yim rau kev sib txuas ntawm lub raj xa ntawv, thiab txhim kho cov pob qij txha txuas ntxiv kom nqus tau cov thermal expansion thiab contraction stress, zam qhov kawg tawg los ntawm kev sib txuas nruj.
2. Cov teeb meem dab tsi tshwm sim los ntawm kev sib txawv ntawm kev teeb tsa ntawm silicon carbide tshav kub exchanger raj hauv ntau- kis cov khoom siv hluav taws xob? Yuav ua li cas zam lawv?
- Teeb meem tshwm sim: Misalignment ntawm lub tshav kub exchanger raj thiab baffle phaj qhov ua rau lub zos kev nyuaj siab concentration nyob rau hauv lub raj lub cev, uas ua rau cov kab nrib pleb tom qab ntev - lub sij hawm ua hauj lwm; qhov nruab nrab tsis sib xws ua rau muaj kev hloov pauv loj hauv kev sib pauv hluav taws xob.
- Ua rau Kev Ntsuas: Tsis txaus machining precision ntawm baffle phaj, nrog qhov sib txawv ntau tshaj 0.5 hli; tsis siv cov cuab yeej taw qhia tshwj xeeb thaum lub sijhawm teeb tsa, ua rau raug yuam lub raj ntxig thiab lub raj khoov.
- Kev daws: nruj me ntsis tswj lub machining raug ntawm cov baffle daim hlau, xyuas kom meej qhov chaw deviation tsawg dua los yog sib npaug rau 0.2 hli; siv cov nylon phau ntawv qhia lub tes tsho sib piv lub tshav kub exchanger raj txoj kab uas hla, maj mam thawb lub tshav kub exchanger raj nyob rau hauv, xyuas kom meej lub raj lub cev yog coaxial nrog lub baffle phaj qhov; ua ib lub pob- dhau qhov kev sim tom qab kev teeb tsa los xyuas cov dej ntws tsis muaj kev cuam tshuam.
III. Cov teeb meem kev ua haujlwm thiab kev ua haujlwm tsis zoo
1. Dab tsi yog vim li cas rau qhov txo qis hauv kev sib pauv hluav taws xob sai thaum lub sijhawm ua haujlwm? Yuav daws nws li cas?
- Cov laj thawj tseem ceeb thiab kev daws teeb meem:
| Ua rau | Cov Lus Qhia Tshwj Xeeb | Kev Kho Mob |
| Tube Phab Ntsa Scaling | Deposition ntawm calcium-magnesium ntsev, cokes thiab lwm yam nplai rau ntawm phab ntsa sab hauv ntawm cov cua kub pauv, ua rau kom muaj zog thermal resistance ntawm tshav kub conduction | Ua cov tshuaj ntxuav tu tsis tu ncua: ncig thiab ntxuav cov nplai inorganic nrog 1% -2% citric acid + corrosion inhibitor; Soak organic coking scale nyob rau hauv siab -kub lye (5% NaOH) ua raws li siab - dej siab ntxuav |
| Nruab nrab Erosion thiab Hnav | Kev yaig ntawm lub raj phab ntsa los ntawm particle- muaj qhov nruab nrab, ua rau muaj qhov ua kom tawv nqaij thiab yooj yim fouling adhesion | Nruab tiv thaiv - yaig hauv ob sab phlu; Ua kom zoo nruab nrab ntws tus nqi thiab tswj nws nyob rau hauv thaj tsam ntawm 1–2 m / s kom tsis txhob muaj siab - ceev yaig |
| Thermal Shock puas | Hloov kev cuam tshuam ntawm cov xov xwm txias thiab kub, ua rau microcracks ntawm phab ntsa raj thiab txo thermal conductivity | Tswj qhov nruab nrab kub hloov pauv tsawg dua lossis sib npaug li 50℃/ min; Txhim kho lub tank tsis zoo kom tsis txhob kub siab thiab poob |
2. Yuav ua li cas tiv thaiv corrosion thiab perforation ntawm silicon carbide tshav kub exchanger raj nyob rau hauv heev corrosive tej yam kev mob?
- Teeb meem tshwm sim: Hauv ib puag ncig uas muaj cov kua qaub, fluorine- muaj cov xov xwm, lossis cov oxidants muaj zog, pitting thiab perforation tshwm sim nyob rau hauv lub raj phab ntsa, ua rau cov xov xwm tawm.
- Ua rau Kev Ntsuas: Kev xaiv cov khoom tsis raug (piv txwv li, RSiC nyob rau hauv kev sib cuag nrog fluorine- muaj cov xov xwm); qhov nruab nrab muaj corrosive ions xws li chloride thiab fluoride ions, nrog rau cov concentrations ntau tshaj cov khoom siv kam rau ua ntau yam; siab - qhov kub thiab txias ua rau cov tshuaj tiv thaiv corrosion.
- Kev daws teeb meem:
- Rau cov xov xwm corrosive heev uas muaj fluorine lossis chloride, ua qhov tseem ceeb ntawm kev siv cov khoom siv SSiC, lossis siv cov txheej txheem corrosion (xws li PTFE txheej) rau phab ntsa raj;
- Tswj cov concentration ntawm corrosive ions nyob rau hauv nruab nrab, thiab nruab ib lub purification ntaus ntawv nyob rau hauv lub upstream kawg;
- Nyob rau hauv siab -kub, corrosive heev, txo qhov kub ntawm lub tshav kub exchanger raj kom tsis txhob muaj overheating nyob rau hauv lub zos overheating thiab ceev corrosion.
3. Yuav ua li cas tshem tawm qhov txawv txav thiab lub suab nrov ntawm cov cua kub exchanger raj thaum lub sijhawm ua haujlwm?
- Teeb meem tshwm sim: Thaum qhov nruab nrab ntws tus nqi siab dhau lawm, cov cua kub exchanger raj thiab baffles resonate, ua suab nrov txawv txav. Lub sijhawm ua haujlwm ntev - ua rau qaug zog tawg ntawm lub raj lub cev.
- Cause Analysis: The medium flow velocity exceeds the critical velocity (generally >3 m / s); qhov sib txawv ntawm qhov baffle yog qhov loj heev, thiab cov khoom siv hluav taws xob hloov pauv tsis txaus; lub plhaub - sab nruab nrab hauv lub plhaub - thiab - raj kub exchanger muaj siab turbulence.
- Kev daws: Txhim kho qhov nruab nrab ntws nrawm thiab tswj nws hauv qab qhov nrawm nrawm; txo qhov baffle sib nrug thiab nce cov ntsiab lus txhawb nqa; nruab anti-vibration strips ntawm yooj yim vibrating qhov chaw ntawm lub tshav kub exchanger raj los cuam tshuam resonance tej yam kev mob.
IV. Cov teeb meem kho thiab kho
1. Dab tsi yog contraindications rau tshuaj ntxuav ntawm silicon carbide tshav kub exchangers?
- Tsis txhob siv cov tshuaj hydrofluoric acid lossis cov tshuaj ntxuav tu uas muaj cov tshuaj fluorides kom tsis txhob xeb ntawm SiC cov khoom;
- Do not use high-concentration strong alkalis (>10% NaOH) rau kev ntxuav ntawm qhov kub thiab txias los tiv thaiv kev puas tsuaj rau cov oxide txheej ntawm lub raj phab ntsa;
- Tswj qhov ntsuas kub tsawg dua lossis sib npaug li 60℃thaum ntxuav kom tsis txhob muaj kev puas tsuaj los ntawm qhov kub thiab txias ntau dhau; yaug kom huv si nrog dej huv tom qab ntxuav kom tsis txhob txuas ntxiv corrosion los ntawm cov residual agents.
2. Yuav ua li cas tuav silicon carbide tshav kub pauv raj tom qab ntev -lub sij hawm tsis ua haujlwm? Luv - lub sij hawm kaw (<30 days): Drain the heat exchange medium from the tubes, rinse the inside and outside of the tubes with clean water to remove dirt, keep the tubes dry, and seal the inlet and outlet to prevent dust and impurities from entering.
Long-term shutdown (>30 hnub): Ua tib zoo ntxuav cov nplai txheej ntawm lub raj phab ntsa, tshuab ziab cov dej hauv cov hlab nrog nitrogen; sau cov hlab nrog qhuav nitrogen lossis inert gas, foob thiab khaws cia; khaws cia ib puag ncig kom qhuav thiab zoo - qhov cua, zam kev tshav ntuj ncaj qha thiab cuam tshuam hnyav.
3. Yuav ua li cas los txiav txim siab seb puas yog silicon carbide tshav kub exchanger raj ua tau raws li cov qauv hloov?
Thaum tshav kub kub exchanger raj yuav tsum tau hloov tam sim ntawd yog hais tias ib yam ntawm cov nram qab no tej yam kev mob tshwm sim:
- Pom cov kab nrib pleb los yog perforations tshwm nyob rau ntawm lub raj phab ntsa, qhia qhov nruab nrab to;
- Lub tshav kub pauv efficiency tseem tsawg dua 60% ntawm tus nqi tsim tom qab ntxuav;
- Lub raj phab ntsa thickness hnav tshaj 30% ntawm thawj thickness;
- Cov khoom tau dhau los ua ib lub sij hawm hloov pauv, nrog rau cov hmoov av thiab tev.
V. Cov Lus Qhia Tseem Ceeb rau Ntev -Lub Sijhawm Ua Haujlwm thiab Kev Saib Xyuas
1. Kev Ua Haujlwm Ua Ntej Ua Ntej Ua Ntej Ua Ntej: Xaiv RSiC / SSiC cov ntaub ntawv thiab cov lus qhia tshwj xeeb raws li qhov tsis xws li kev tshaj tawm corrosivity, kub, siab, thiab cov ntsiab lus khib nyiab kom tsis txhob "siv cov ntaub ntawv tsis zoo rau siab -kev ua haujlwm."
2. Kev Txhim Kho Kev Nyuaj Siab: Siv kev kho kom yooj yim + nthuav kev sib koom ua ke kev them nyiaj kom txo tau kev ntxhov siab los ntawm thermal expansion thiab contraction thiab vibration.
3. Kev tu thiab tiv thaiv tsis tu ncua: Tsim kom muaj lub ntsuas ntsuas ntsuas thiab ntxuav tam sim raws li qhov ntsuas tuab kom tiv thaiv cov nplai ntau dhau los ntawm kev ua kom txo qis kev sib pauv hluav taws xob thiab hauv cheeb tsam overheating.
FAQ
Q: Dab tsi yog lub raj nyob rau hauv lub tshav kub exchanger?
A: Thaum tshav kub kub exchanger tube yog ib qho khoom siv los hloov cov cua sov ntawm ib qho nruab nrab mus rau lwm qhov rau kev ua kom txias thiab cua sov. Nws cais qhov nruab nrab uas yog siv.
Q: Dab tsi yog qhov kub ntawm cov yeeb nkab exchanger?
A: Lub tshuab hluav taws xob hluav taws xob hluav taws xob hluav taws xob yog cov khoom siv hluav taws xob hloov hluav taws xob uas siv hluav taws xob latent ntawm vaporization los hloov cov cua sov mus rau qhov ntev nrog qhov sib txawv me me. Nws muaj ib tus neeg kaw cov raj uas muaj cov kua dej ua haujlwm kom raug.
Q: Cov khoom siv hluav taws xob ua haujlwm li cas?
A: Cov khoom siv hluav taws xob kub, cov plhaub hlau, thiab cov raj ua haujlwm los ntawm kev xa cov cua sov ntawm ib qho mus rau lwm qhov. Thaum lub cub tawg kub hnyiab tau cov pa roj carbon monoxide lossis roj propane, nws cov pa hluav taws xob / hluav taws xob los ntawm -cov khoom (tseem hu ua flue gas) nkag mus thiab taug kev los ntawm lub tshav kub exchanger.
Q: Lub hauv paus ntsiab lus ntawm cov khoom siv hluav taws xob yog dab tsi?
A: Thaum tshav kub kub exchangers ua hauj lwm vim tias cov cua sov ib txwm ntws los ntawm qhov kub thiab txias mus rau qhov kub. Yog li ntawd yog tias cov kua dej kub thiab cov kua dej txias sib cais los ntawm cov cua sov ua kom sov tuaj yeem hloov tau los ntawm cov kua dej kub mus rau cov kua dej txias.
Q: Dab tsi yog cov txheej txheem ntawm kev sib hloov cua sov?
A: Kev sib pauv cua sov qhuav tshwm sim los ntawm kev ua, convection, thiab hluav taws xob. Kev coj ua yog kev sib pauv cua sov ntawm ob qhov chaw hauv kev sib cuag ncaj qha. Txij li thaum cov cheeb tsam sib cuag feem ntau me me (xws li, taw kev sib cuag nrog hauv av), kev sib hloov cua sov los ntawm conduction kuj tsawg.
Q: Dab tsi yog qhov tseem ceeb ntawm kev siv hluav taws xob hloov pauv?
A: Thaum tshav kub kub exchangers yog siv los hloov cov cua sov ntawm ib qho nruab nrab mus rau lwm qhov. Cov xov xwm no tej zaum yuav yog roj, kua, los yog ob qho tib si ua ke. Cov xov xwm yuav raug cais los ntawm cov phab ntsa ruaj khov los tiv thaiv kev sib xyaw los yog tuaj yeem nyob rau hauv kev sib cuag ncaj qha.
Cim npe nrov: Tuam Tshoj tshav kub exchanger yeeb nkab manufacturers, lwm tus neeg, Hoobkas
