Yuav Ua Li Cas Roj Viscosity Gradient Impacts Heating Tube Service Lifespan thiab Temperature Uniformity
Viscosity ua raws li qhov tsis pom kev txiav txim siab tswj kev ua kom sov dissipation efficiency ntawm cov roj immersion cua sov raj, tsis tau nws nyob twj ywm overlooked thaum lub sij hawm feem ntau cov txheej txheem cua sov customization. Lub teeb hydraulic roj, nruab nrab-viscosity thermal roj thiab ultra-viscous asphalt tsim peb qhov sib txawv viscosity gradients, txhua tus coj cov kev hloov pauv kub tshwj xeeb thiab cov hom tsis ua haujlwm rau cov khoom siv cua sov submerged. Cov roj nyias nyias ntws tawm hauv qhov ntsuas kub me me kom rov ua dua cov kua dej nyob ze ntawm lub raj, thaum cov khoom hnyav hnyav ua rau cov txheej txheem thermal ciam teb uas tsis muaj cua sov thiab corrosive impurities tiv thaiv cov hlau sheaths. Cov ntaub ntawv kub tsis tu ncua ntes tau los ntawm siab - qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas qhov ntsuas tau txuas rau lub raj sab nrauv phab ntsa kom pom tseeb qhov sib txawv ntawm qhov kub thiab txias vim cov roj viscosity nce, ntsuas qhov kev pheej hmoo zais los ntawm qhov siab - viscosity ua haujlwm ib puag ncig.
Tsawg-viscosity hydraulic roj hauv qab 50 mm² / s tsim cov kev ua haujlwm me me tshaj plaws rau cov cua kub. Smooth kua convection tsis tu ncua refreshes cov kua zaj duab xis nyob ib ncig ntawm cov cua sov, txwv tsis pub lub zos kub overshoot mus rau ib tug nqaim ntau yam. Nto load ze rau sab sauv txwv ntawm 6 W / cm² tseem lees txais yam tsis muaj kev coking sai, thiab kev lag luam 304 stainless hlau tuav ruaj khov tiv thaiv - oxidation kev ua haujlwm nyob rau hauv nruab nrab kev ua haujlwm kub. Txawm tias qhov kev hloov pauv me me tsis tuaj yeem ua rau siab siab - qhov kub thiab txias ntawm qhov chaw tuag, txo cov zaus ntawm kev tu cov pa roj carbon monoxide niaj hnub thiab txuas ntxiv cov sijhawm tu ncua.
Nruab nrab- viscosity thermal roj xws li 50 mus rau 300 mm² / s yuav tsum tau qis qis qis qis thiab cov khoom siv kho dua tshiab. Kev khiav ceev qeeb qeeb qeeb ntawm cov txheej txheem kev khiav hauj lwm kub, ncua sij hawm nyob ntawm cov roj molecules ntawm lub raj nplaim thiab me ntsis nce carbonization nyiam. Titanium-stabilized 321 stainless hlau yuav tsum tau tiv thaiv intergranular corrosion generated los ntawm ntev - voj voog siab - kub thermal cycling, thaum nto load qhov tseem ceeb hloov mus rau nruab nrab ntawm 0–6 W / cm² lub sij hawm nyab xeeb. Circulation twj tso kua mis txaus tus nqi hloov pauv tau qhov tseem ceeb dua nyob rau hauv kev tsim qauv kom tawg static kua ciam khaubncaws sab nraud povtseg thiab sib npaug ntawm qhov kub thiab txias faib.
Ultra- siab- viscosity media suav nrog cov roj hnyav hnyav thiab asphalt siab dua 300 mm² / s ua rau muaj kev txwv nruj tshaj plaws ntawm cov cua sov. Cov kua dej qeeb qeeb heev ua rau lub siab siab - cov roj kub tiv thaiv cov ntaub thaiv npog rau lub sijhawm ntev, ua kom muaj zog thermal coking thiab sulfur-raws li tshuaj corrosion. Tsuas yog Incoloy800 npib tsib xee-raws li alloy tiv thaiv kev sib koom ua ke siab- kub oxidation thiab sulfide yaig nyob rau hauv cov xwm txheej hnyav, nrog rau qhov chaw thauj khoom ntawm qhov qis tshaj plaws hauv qab 3 W / cm² kom txo cov raj phab ntsa qhov kub thiab txias. Ntxiv ndlwg guiding baffles nyob rau hauv cov cua kub tso tsheb hlau luam los ua ib tug tsim nyog auxiliary qauv los cuam tshuam cov roj stagnation txheej txheem thiab tsis txhob overheating nyob rau hauv lub zos.
Hom kev ua tsis tiav txawv txawv ntawm cov viscosity gradients. Tsawg-viscosity hydraulic roj rhaub feem ntau degrade los ntawm qeeb oxidation nto thiab me impurity fouling, thaum thermal roj Cheebtsam cuam tshuam intergranular cracking thiab maj mam thermal zog attenuation. Heavy roj cua sov raj fim ib txhij tuab coke adhesion thiab sib sib zog nqus pitting corrosion, ua rau sai tube phab ntsa thinning thiab perforation yog hais tias tsis nyob twj ywm unoptimized. Kev sib piv viscosity yuav tsum tau muab tso ua ke rau hauv qhov pib tsim lub tshuab cua sov es tsis yog kho raws li kev hloov kho thib ob tom qab cov khoom siv commissioning.
Ua kom tiav viscosity-kev hloov kho cua sov cov ntsiab lus sib xyaw ua ke cov ntaub ntawv alloy, cov txheej txheem ntawm qhov chaw thauj khoom thiab cov qauv tsim kom zoo. Tag nrho -spectrum viscosity parameter tawm tswv yim sib tw nrog tiag -lub sij hawm thermocouple qhov ntsuas kub ntsuas tiv thaiv qhov tsis sib xws ntawm cov thermal tsis sib xws thiab kev laus ntxov ntxov. Customized heating element designs tailored to exact oil viscosity classes tshem tawm viscosity-induced coking and corrosion faults, delivering long time-term performance for all types of industrial oil heating processes.
