Misstep hauv Industrial Gas Detector Selection: Misclassifying Organic Gases as Combustible Gases for Detection
Kev tsom xam: Feem ntau cov khoom siv hluav taws xob uas muaj hluav taws xob nyob hauv khw siv lub hauv paus ntsiab lus ntawm catalytic combustion. Lub hauv paus ntsiab lus ntawm catalytic combustion yog siv cov combustible gases los ua kom tsawg -kub flameless combustion ntawm nrhiav kom tau cov khoom nrog catalytic kev ua tau zoo. Lub tshav kub ntawm combustion ua rau qhov kub thiab txias ntawm lub Cheebtsam kom nce, yog li ua kom tus nqi kuj ntawm cov khoom. Qhov kev hloov pauv ntawm tus nqi tiv thaiv tau kuaj pom los ntawm tus choj Wheatstone kom ua tiav lub hom phiaj ntawm kev kuaj xyuas cov concentration ntawm cov roj hluav taws xob.
Txawm hais tias nyob rau hauv txoj cai, ntev npaum li nws tuaj yeem hlawv thiab tso tawm cua sov, nws tuaj yeem tshawb pom, tib neeg feem ntau hais tias catalytic combustion sensors tuaj yeem ntsuas qhov ntsuas cov roj combustible.
Txawm li cas los xij, catalytic combustion sensors tsis haum rau ntsuas ntev - saw alkanes, xws li cov roj teeb siab flash, diesel, aromatic hydrocarbons, thiab lwm yam. Cov khoom sib xyaw nrog ntau tshaj 5 carbon atoms, xws li benzene, toluene, thiab xylene, tshwj xeeb tshaj yog cov hydrocarbon compounds nrog benzene cov khoom muaj zog rings thaum lub sij hawm catalytic chains nyuaj. combustion, ua rau tsis tiav combustion. Unburned molecules yuav sau nyob rau saum npoo ntawm catalytic hlaws dai, ua rau qhov tshwm sim ntawm "carbon deposition" phenomenon thiab cuam tshuam cov tom ntej combustion ntawm lwm cov molecules. Thaum cov pa roj carbon deposition nce mus txog ib theem, cov roj combustible yuav tsis muaj peev xwm mus cuag cov catalytic hlaws dai, ua rau insensitive los yog txawm unresponsive nrhiav tau. Qhov no yog txiav txim los ntawm cov khoom ntawm lub sensor nws tus kheej thiab belongs rau ib qho kev xaiv yuam kev nyob rau hauv thaum ntxov theem.
Cov ntsiab lus: Cov pa roj carbon monoxide xws li benzene, alcohols, lipids, thiab amines tsis haum rau kev tshawb nrhiav siv cov ntsiab lus catalytic combustion, thiab PID photoionization cov hauv paus ntsiab lus yuav tsum tau siv los kuaj xyuas. Ua ntej yuav khoom siv roj av, nws yog ib qho tseem ceeb uas yuav tau sab laj nrog lub tuam txhab cov khoom kom tsis txhob muaj qhov yuam kev zoo sib xws.
Kev nkag siab yuam kev: Hloov qhov chaw siv yam tsis muaj kev tso cai
Kev Ntsuam Xyuas: Lub tshuab ntsuas roj yog tsim los ntsuas cov roj concentration qhov tseem ceeb hauv ib puag ncig, thiab kev ntsuas online ntawm hydrogen sulfide concentration hauv cov kav dej yog hloov pauv qhov chaw siv. Lub sensor ntawm hydrogen sulfide gas detector yog raws li lub hauv paus ntsiab lus ntawm electrochemical, thiab cov℃ntawm electrolyte poob yog zoo correlated nrog cov concentration ntawm hydrogen sulfide nyob rau hauv ib puag ncig. Qhov ntau hydrogen sulfide cov ntsiab lus muaj, qhov ceev ntawm electrolyte noj thiab lub neej luv dua. Nyob rau hauv ib puag ncig ib puag ncig, qhov concentration ntawm hydrogen sulfide yog 0, thiab tsuas yog xau siv electrolyte, yog li lub neej muaj peev xwm ncav cuag 1-2 xyoos. Muaj ib txwm hydrogen sulfide nyob rau hauv lub raj xa dej, thiab cov electrolyte yog tas li noj, zoo heev txo nws cov natural lifespan.
