Dab tsi ua kom muaj txiaj ntsig zoo ntawm Coal Chemical Thermocouples?

Thermocouples yuav tsum muaj qee tus yam ntxwv hauv qhov xav tau ib puag ncig ntawm cov txheej txheem thee chemical kom lav qhov ua tau zoo tshaj plaws. Cov yam ntxwv no yog tsim los ua kom tau raws li qhov xav tau ntawm qhov kub thiab txias, corrosive, nyuaj thee-txog cov txheej txheem tshuaj lom neeg.
Qhov tseem ceeb tshaj plaws, cov khoom siv ua haujlwm hauv thee chemical thermocouples yog qhov tseem ceeb heev. Feem ntau, cov thermocouples no muaj cov alloys tshwj xeeb raws li lawv cov khoom siv hlau. Cov alloys no raug xaiv rau lawv lub peev xwm los tiv thaiv qhov kub siab heev pom hauv cov dej siv tshuaj lom neeg. Piv txwv li, cov alloys xws li npib tsib xee-based superalloys feem ntau ua hauj lwm hauv cov thee gasification cov txheej txheem nyob rau hauv qhov kub thiab txias yuav ncav cuag zoo tshaj 1000 degrees Celsius. Cov ntsiab lus siab melting thiab thermal stability zoo txhais tau cov alloys. Nyob rau hauv cov cua kub zoo, lawv tuaj yeem khaws lawv cov qauv kev ncaj ncees thiab cov yam ntxwv ntawm hluav taws xob, zoo li lub zog muaj zog tiv thaiv los ntawm kev tawm tsam ntev. Qhov kev xaiv ntawm cov ntaub ntawv no ncaj qha cuam tshuam rau lub thermocouple lub peev xwm los muab kev ntseeg siab kub nyeem ntawv nyob rau hauv qhov xav tau thermal ib puag ncig ntawm cov txheej txheem thee.
Tseem muaj lwm qhov tseem ceeb zoo yog corrosion kuj. Cov khoom sib txawv corrosive muaj nyob rau hauv cov txheej txheem thee chemical. Nyob rau tib lub sijhawm, sulfur compounds, tshauv, thiab lwm yam khoom lag luam tuaj yeem tsom rau lub thermocouple. Feem ntau ua los ntawm cov ntaub ntawv nrog zoo corrosion kuj, lub txheej sheath ntawm thee tshuaj thermocouples yog siv los tua qhov no. Ib qho feem ntau siv cov ntaub ntawv ceramic. Ntuj tsis kam mus rau tshuaj tua kab mob, ceramics yuav tiv thaiv cov thermocouple Cheebtsam los ntawm cov khoom corrosive nyob rau hauv cov thee chemical ib puag ncig. Ceramic sheath zoo li muab lub vijtsam tiv thaiv nyob ib puag ncig lub thermocouple, khaws cov tshuaj corrosive tawm thiab yog li ua rau cov hlau tsis huv. Txhawm rau txhim kho lawv cov kev tiv thaiv corrosion ntxiv, qee cov thermocouples sophisticated yuav suav nrog cov txheej txheem tshwj xeeb ntawm cov khoom siv hlau lawv tus kheej.
Tus ncej ntawm lub thermocouple qhov kev ua tau zoo yog qhov ntsuas qhov ntsuas qhov tseeb. Kev tswj qhov kub zoo yog qhov tseem ceeb hauv cov txheej txheem thee tshuaj xws li pyrolyzed thiab liquefaction. Lub thermocouple tus qauv tsim yuav tsum tau lees paub qhov tseeb ntawm qhov ntsuas kub ntawm qhov ntsuas kub ntawm qhov sib txawv. Qhov no hu rau calibration zoo tag nrho thoob plaws hauv cov txheej txheem ntau lawm. Kev mloog zoo rau kev nthuav dav yog siv nyob rau hauv kev sib txuas ntawm ob lub hlau sib txawv hauv cov thermocouple los lav tias Seebeck effect qhov hluav taws xob uas ua tau raws li qhov sib txawv ntawm qhov kub thiab txias. Qhov tsis raug me ntsis hauv qhov ntsuas kub yuav muaj qhov cuam tshuam loj. Hauv cov thee liquefaction, piv txwv li, qhov ntsuas kub tsis raug tuaj yeem ua rau qhov zoo tshaj plaws hloov pauv ntawm cov thee rau hauv cov kua roj, yog li ua rau cov khoom tsis zoo lossis cov khoom tsis zoo. Nws zoo li qhov sib npaug me me; txhua qhov kev tawm mus los ntawm kev nyeem ntawv qhov kub thiab txias tuaj yeem cuam tshuam tag nrho cov tshuaj tiv thaiv kab mob.
Ntxiv mus, qhov kev ua tau zoo ntawm cov thee tshuaj thermocouples nyob ntawm ntau yam ntawm lawv cov tshuaj tiv thaiv lub sijhawm. Qhov kub thiab txias hauv cov tshuaj tiv thaiv coal tej zaum yuav tshwm sim sai. Nyob rau hauv lub gasification reactor, piv txwv li, ib qho kev hloov ceev ceev ntawm cov khoom noj ntawm cov thee lossis cov dej ntws ntawm cov reactants tuaj yeem cuam tshuam rau qhov kub thiab txias. Cov tshuaj tiv thaiv ceev ceev lub sij hawm thermocouples tuaj yeem txheeb xyuas cov kev hloov pauv sai sai thiab muab cov ntaub ntawv rau kev tswj hwm. Qhov no ua rau muaj kev hloov pauv raws sij hawm kom tswj tau qhov kub thiab txias. Zoo li tus neeg saib xyuas kev ceeb toom ceeb toom rau kev tswj hwm ntawm txhua qhov kev hloov pauv kub, lub thermocouple ceev ceev pab cov txheej txheem kom tswj tau ntawm lub hom phiaj. Yog tias lub sij hawm teb qeeb, qhov kev tswj xyuas yuav tsis tuaj yeem teb tau raws sij hawm, ua rau qhov kub thiab txias excursions tuaj yeem cuam tshuam cov coal tshuaj tiv thaiv kev nyab xeeb lossis kev ua haujlwm zoo.
Cov yam ntxwv tseem ceeb ntawm cov thermocouple kuj suav nrog txhua yam muaj zog thiab ruaj khov. Kev vibrations, kev hloov pauv siab, lossis kev txav ntawm cov khoom hauv cov khoom siv hluav taws xob tuaj yeem ua rau muaj kev ntxhov siab. Lub thermocouple yuav tsum tiv thaiv cov kev ntxhov siab no yam tsis muaj qhov tseeb lossis tawg. Kev tsim kho muaj zog ntawm lub thermocouple zoo tsim tau lav nws lub cev kev ncaj ncees thaum siv. Qhov no zoo li tus choj uas tsim tau zoo tuaj yeem tiv taus kev kub ntxhov thiab hnyav ua haujlwm tawm tsam nws, muab kev pabcuam zoo ib yam thoob plaws lub sijhawm.
Tsis tas li ntawd tseem ceeb yog cov thermocouple haum nrog lub ntsiab tswj ntawm cov thee chemical ntau lawm. Nws yuav tsum tau txuas flawlessly nrog cov nroj tsuag cov ntaub ntawv sib sau ua ke thiab tswj systems. Qhov no tau lees paub qhov ua tiav ntawm cov ntaub ntawv ntsuas kub tau txais los ntawm cov thermocouple yog li ua kom paub cov kev txiav txim siab rau kev khiav ntawm cov txheej txheem thee tshuaj. Yog tias muaj teeb meem kev sib raug zoo tshwm sim, lawv tuaj yeem ua rau kev tswj qhov kub thiab txias thiab yog li cuam tshuam rau kev ua haujlwm ntawm cov txheej txheem.
Kev sib xyaw cov ntsiab lus suav nrog qhov kub thiab txias - resistant thiab corrosion - resistant cov ntaub ntawv, siab - raug ntsuas kub muaj peev xwm, ceev teb lub sij hawm, txhua yam muaj zog thiab stability, thiab compatibility nrog cov tswj system pab txoj kev ua tau zoo ntawm thee tshuaj thermocouples. Cov yam ntxwv no koom tes los lav tias cov thermocouples tuaj yeem ua haujlwm nyob rau hauv qhov nyuaj ntawm cov txheej txheem thee, yog li muab cov ntaub ntawv ntsuas kub uas yuav tsum tau ua rau kev ua haujlwm zoo tshaj plaws thiab cov khoom lag luam zoo.