Plhaub-thiab- raj kub exchangersyog ib hom kev siv ntau tshaj plaws tam sim no, ua tsaug rau lawv cov qauv yooj yim, kev ua haujlwm ruaj khov, thiab muaj peev xwm ua haujlwm nyob rau hauv qhov kub thiab txias. Lawv feem ntau siv rau hauv kev lag luam kev lag luam xws li roj av, chemical engineering, lub teeb kev lag luam, tshuaj, thiab lub zog. Tom qab siv sij hawm ntev -, fouling cov ntaub ntawv nyob rau hauv lub exchanger, ua rau cov dej txias tsis txaus. Hauv qab no yog cov lus piav qhia ntxaws ntxaws ntawm cov txheej txheem thiab descaling/cleaning method of shell-thiab-tube heat exchangers.
I. Heat Transfer Mechanism of Plhaub-thiab-Tube Heat Exchangers
Plhaub-thiab-tube heat exchangers yog ib qho yooj yim los tsim, nrog cov nqi qis, ntau yam khoom siv, kev tu yooj yim, muaj zog yoog raws, muaj peev xwm ua haujlwm loj, thiab kev ua haujlwm ruaj khov. Lawv tuaj yeem tiv taus qhov kub thiab txias.
Nyob rau hauv cov nqe lus ntawm cov qauv compactness, tshav kub hloov siv, thiab chav tsev hlau noj, plhaub - thiab - raj kub exchangers yuav tsis phim phaj kub exchangers los yog phaj -fin heat exchangers. Txawm li cas los xij, vim hais tias cov txiaj ntsig tau hais los saum no, lawv tseem tuav txoj haujlwm tseem ceeb hauv kev siv hauv kev lag luam xws li chemical engineering, roj av, thiab lub zog.
Lub plhaub - thiab - raj kub exchanger yog tsim los ntawm kev sib txuas cov raj rau cov ntawv raj, uas tom qab ntawd kho los ntawm lub plhaub. Raws li cov yam ntxwv xws li hom, siab, kub, thiab fouling zog ntawm qhov nruab nrab, cov yam ntxwv ntawm ntau hom qauv rau kev sib txuas cov ntawv raj rau lub plhaub, cov duab ntawm cov hlau hloov mus rau lub plhaub, cov khoom siv hluav taws xob hloov hluav taws xob, cov nqi hluav taws xob, thiab kev yooj yim ntawm kev saib xyuas thiab kev soj ntsuam, ntau hom plhaub- thiab - raj kub exchangers yog tsim thiab tsim.
II. Descaling Methods rau Plhaub-thiab-Tube Thaum tshav kub kub Exchangers
1. Tshuaj Descaling ntawm tshav kub Exchangers
(1) cais cov khoom siv thiab tshem tawm tag nrho cov dej los ntawm cov khoom siv hluav taws xob.
(2) Ntxuav cov yeeb nkab impurities nrog siab - dej siab thiab kaw lub kaw lus.
(3) Nruab ib lub pob valve ntawm qhov kev rho tawm thiab cov khoom sib hloov, txuas lub twj tso kua mis thiab cov kav dej, thiab tso cov tshuaj ntxuav rau hauv qhov sib hloov los ntawm hauv qab thiab cia nws ntws tawm ntawm sab saum toj.
(4) Txhaj tus neeg saib xyuas yuav tsum tau ua thiab ua kom rov ua dua tshiab.
(5) Tshem tawm roj txhua lub sijhawm thiab txhaj cov dej kom tsim nyog.
(6) Siv cov pH kuaj strips los txiav txim qhov ua tau zoo ntawm tus neeg ua haujlwm tu.
(7) Rov qab kho cov tshuaj ntxuav thiab yaug dua nrog dej huv kom txog thaum tus nqi pH ua rau nruab nrab.
2. Kev tshem tawm lub cev ntawm cov khoom siv cua sov
(1) Lub cev descaling cia siab rau ntau yam khoom siv sab nraud thiab lub zog los tsoo, sib cais, thiab tev tawm fouling ntawm cov khoom nto, yog li ua tiav cov nyhuv tu.
(2) Txhua txoj kev ntxuav lub cev muaj qhov sib txawv: lawv tsis yog -corrosive thiab ib puag ncig tus phooj ywg. Lawv qhov tsis zoo yog tias thaum ntxuav cov khoom siv sab hauv nrog cov txheej txheem nyuaj, lub zog ua haujlwm yuav tsis ncav cuag txhua qhov sib npaug, ua rau "qhov chaw tuag" (qhov chaw uas tsis tau ntxuav).
Yog tias koj xav tau cov khoom siv hluav taws xob hloov pauv rau kev ua haujlwm tshwj xeeb (xws li, ultra- cov qauv siab, cov khoom siv titanium alloy, ntau- ntws channel tsim), koj tuaj yeem xa cov lus nug lossis tiv tauj peb txhua lub sijhawm. Tom qab hauv - kev sib txuas lus tob, peb yuav xa cov lus qhia tshwj xeeb thiab cov phiaj xwm kev rau koj.
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