Dab tsi yog Block Graphite Thaum tshav kub kub Exchanger tsim thiab nws cov yam ntxwv tshwj xeeb yog dab tsi?

Ntau lub graphite cua sov exchangers yog tsim los ua ib qho thaiv ib leeg nrog drilled channel, zoo li lub tshuab manifold ntau tshaj li lub raj ntim, tsis zoo li qhov zoo -paub plhaub- thiab - raj configuration. Cov qauv no muaj qee qhov zoo hauv compactness, tab sis kuj txwv kev kho. Hauv kev ua haujlwm corrosive, qhov chaw nyob ntawm tus nqi qis lossis kev ruaj ntseg yog qhov tseem ceeb, kev paub txog kev tsim kho cov txheej txheem ntawm block graphite heat exchangers yuav tsum tau qhia cov khoom tsim nyog.

Core Siv: Cemented Drilled Blocks rau hauv Monolith
Cov txheej txheem pib nrog cov blocks loj ntawm impermeable graphite. Cov graphite yog ua rau corrosion resistant los ntawm impregnating cov ntxeem tau carbon graphite nrog phenolic los yog furan resin thiaj li yuav muab lub graphite tiv thaiv kev nkag mus ntawm cov kua. Cov blocks yog drilled precisely nrog ob txheej ntawm perpendicular qhov, ib qho rau cov txheej txheem kua thiab ib tug rau cov kev pab cuam kua ( cua sov los yog txias nruab nrab ). Ob txoj kab dej feem ntau yog nyob rau ib leeg, ntawm txoj cai kaum, thiab tsis hla.

Cov blocks ntawm tus kheej yog tom qab ntawd piled thiab cemented nrog ib qho tshwj xeeb resin cement. Cov cement yuav tsum muaj tib coefficient ntawm thermal expansion li graphite thiab zoo ib yam rau corrosion. Cov pawg tsim ib qho monolithic graphite core tom qab sib dhos thiab kho. Lub block pawg yog txiav tawm los ntawm headers (chamber faib) uas yog bolted mus rau qhov kawg, feem ntau nrog gaskets, kom cov kua dej nkag mus rau hauv thiab tawm ntawm cov drilled raws. Qhov kev sib dhos tag nrho no yog tom qab ntawd muab ntim rau hauv lub plhaub steel lossis muab nrog cov npog sab nrauv.

Block Graphite Exchangers Tshwj Xeeb Sib Tsoo Nta
Modularity rau Scaling
Qhov xwm ntawm block tsim muab modularity. Ob peb lub blocks tuaj yeem muab tso rau hauv kab rov tav lossis ntsug los txhim kho thaj chaw sib kis. Qhov sib txawv ntawm qhov ntev tuaj yeem siv rau hauv ib lub plhaub, kom lub luag haujlwm xav tau tuaj yeem ua tau raws li qhov xav tau ntawm kev tsim khoom. Qhov kev hloov pauv no txo ​​cov khoom seem ntawm cov khoom lag luam raws li qhov cuam tshuam tsis zoo tuaj yeem hloov pauv, txawm hais tias qhov tseeb block hloov tsis tshua tau ua, tshwj xeeb tshaj yog thaum xav txog kev sib koom ua ke.

Heev Compactness
Tag nrho cov ntim ntim yog ib qho hluav taws xob hloov mus rau qhov chaw - txhua qhov cubic centimeter muaj cov kab sib tshuam, ua rau chav tsev loj heev. Tsis muaj raj, baffles los yog raj ntawv los nqa qhov chaw. Lub block graphite exchanger tuaj yeem siv 50-70% tsawg dua hauv pem teb thaj tsam dua li lub plhaub hlau-thiab-tube exchangers ntawm tib lub luag haujlwm. Qhov no compactness yog tshwj xeeb tshaj yog pab tau rau retrofits los yog installs nyob rau hauv cov chaw uas twb muaj lawm chemical chaw uas qhov chaw nyob ntawm tus nqi.

Tshem tawm cov pob qij txha ntawm cov hlab ntsha thiab cov hlab ntsha
Kev tsim thaiv thaiv tshem tawm cov raj - mus rau -tubesheet junctions, ib qho ua rau muaj kev cuam tshuam hauv cov pa hluav taws xob sib txawv. Tsis muaj mechanically dov los yog welded xaus rau lub raj. Cov khoom graphite ua rau muaj kev cuam tshuam ntawm cov txheej txheem thiab cov dej ua haujlwm. Gaskets yog siv tshwj xeeb rau ntawm lub taub hau - los - thaiv kev sib txuas uas ob lub kua dej nyob ntawm qhov sib txawv me ntsis. Qhov no ua rau txo qis cov xaim hluav taws xob thiab txhim kho kev nyab xeeb nrog cov kua dej txaus ntshai lossis lom.

Tsis muaj gaskets nruab nrab ntawm kev pab cuam & txheej txheem kua
Ib qho kev nyab xeeb tseem ceeb ntawm kev tsim thaiv yog tias ob qhov dej ntws tsis sib cais los ntawm gaskets. Lub graphite block yog ib qho txuas txuas ntxiv monolithic barrier. Header gaskets tuaj yeem xau tab sis, raws li cov chav header raug cais tawm, muaj feem tsawg ntawm cov txheej txheem thiab cov kua dej ua haujlwm dhau los ua cov kab mob sib kis. Cov cuab yeej no muaj txiaj ntsig tshwj xeeb hauv cov ntawv thov uas sib xyaw ntawm ob cov kua yuav ua rau muaj kev cuam tshuam loj heev lossis poob ntawm cov khoom.

Qhov kev txwv loj yog tsis yog - kho
Kev tsim kho tshwj xeeb kuj nthuav tawm qhov kev txwv loj. Yog hais tias ib lub pob tawg nyob rau hauv, raws li qhov tshwm sim ntawm tshav kub poob siab, siab surge los yog mechanical kev nyuaj siab, nws yuav tsis tau welded, patched los yog sau. Internal passages tsis siv tau rau kev kho. Koj yuav tsum hloov tag nrho cov block lossis tag nrho cov block pawg. Qhov tseeb, qhov no feem ntau txhais tau tias tso tseg tag nrho cov khoom sib pauv raws li kev hloov ntawm cov blocks ib tus neeg cuam tshuam nrog kev sib koom tes sib koom ua ke thiab rov ua cov blocks tshiab, uas tsis tshua pheej yig.

Hauv qee qhov kev pabcuam hnyav, cov block exchangers yog cov khoom siv tau. Tsis kam mus rau qhov kub thiab txias cycling thiab mechanical qaug zog tswj lawv lub neej. Yog tias yuav tsum tau tawg ua ntu zus, ntau qhov thaiv me me nyob rau hauv tib lub sijhawm yuav muab tau kom ib qho tsis ua haujlwm kaw tag nrho cov txheej txheem.

Kev sib piv ntawm Plhaub thiab Tube Graphite tshav kub exchangers
Graphite heat exchangers kuj tau tsim nyob rau hauv lub plhaub - thiab - raj tsim, siv graphite hlab (ib txwm 20-50 mm txoj kab uas hla) thiab graphite raj ntawv. Kev sib piv qhia txog kev sib pauv:

Feature: Thaiv GraphiteGraphite, plhaub & raj
Thaum tshav kub kub flux ceev heev siab (nruj) Nruab nrab
Leak pathways Tsawg (tsis muaj tube junctions) Ntau (txhua lub raj txuas)
Kev kho tsis muaj (kev thaiv thaiv=hloov) Zoo (ib leeg tuaj yeem txuas lossis hloov tau)
Qhov siab tshaj plaws ntawm kev ua haujlwm qis qis (feem ntau 6-10 bar) Siab dua (tej zaum 10-16 bar)
Ntxuav / foulingBlocked qhov nyuaj rau kev ntxuav Mechanical tu cov hlab yog ua tau
Cov hauj lwm zoo Condensation Ib theem ua kua Reboilers, cua sov, txias
Block exchangers feem ntau ua hauj lwm rau condensation thiab ib theem ua kua ua ub no uas thermal shock tswj tau zoo. Rau cov kev pab cuam qhov twg clogging, fouling los yog kub caij tsheb kauj vab yog ib qho kev txhawj xeeb ntau dua, lub plhaub thiab lub raj graphite tshuab tau txais kev pom zoo txij li cov raj tuaj yeem hloov tau.

Tswv yim xav txog Specification
Thaum xav txog block graphite heat exchanger kev tsim kho rau ib lub luag haujlwm, cov hauv qab no kuj yuav tsum tau xav txog:

Thermal cycling zaus - Kev caij tsheb kauj vab ntau zaus ua rau muaj kev pheej hmoo tawg. Block designs nyiam khiav txhua lub sijhawm.

Lub siab hloov pauv - Sudden siab spikes (dej rauj) tuaj yeem tawg cov blocks. Kev tsim cov kav dej thiab lub siab nyem yuav tsum yog qhov tseeb.

Fluid purity – Ports to blocks are small (usually 6-15 mm diameter). Suspended particles >1-2 hli pheej hmoo clogging, uas tsis yooj yim rau rodded.

Qhov tseem ceeb ntawm kev pabcuam - Hauv ib qho - cov txheej txheem tsheb ciav hlau, qhov twg qhov tsis ua haujlwm ntawm kev sib pauv ua rau kev tsim khoom nres, nws yuav tsis tuaj yeem ua tsis tuaj yeem kho cov block units. Cov chav nyob tsis tu ncua lossis lwm lub tsev yuav raug pom zoo.

Xaus:
Lub block graphite tshav kub exchanger yog ib qho tshwj xeeb kev ua tau zoo tsim kev txi kev kho kom haum rau huab cua compactness thiab tsawg txoj kev xau. Nws txoj kev tsim kho yog drilled blocks stacked thiab sib koom ua ke los ua ib tug monolithic core, muab cov cua kub hloov ceev thiab tsis muaj raj - mus rau -tubesheet kev sib txuas. Tab sis qhov tawg thaiv tsis tuaj yeem kho tau, nws yuav tsum tau hloov tag nrho. Lub tsev style yuav tsum ua raws li kev saib xyuas lub tswv yim thiab qhov tseem ceeb ntawm kev pabcuam. Block graphite yog ib qho zoo nkauj, qhov chaw txuag kev daws teeb meem rau cov thermal poob siab, tsis tu ncua, huv si, ib theem ua haujlwm. Rau qhov hnyav lossis kev nyab xeeb-cov kev pabcuam ntsig txog qhov kev rov ua dua yog qhov tseem ceeb, lwm yam ntaub ntawv lossis lub plhaub-thiab- raj graphite tej zaum yuav haum dua.