Nyob rau hauv siab -kawg manufacturing sectors xws li electronics, tshuaj ua, kev kho cua sov, laser txiav, thiab hloov chaw ntim, siab purity nitrogen (Ntau tshaj los yog sib npaug rau 99.999%) tau dhau los ua ib tug irreplaceable txheej txheem nruab nrab. Piv nrog rau cov kua nitrogen cov khoom, ntawm - qhov chaw nitrogen tiam tau maj mam dhau los ua cov ntsiab lus tseem ceeb vim nws cov khoom ruaj khov thiab cov nqi khiav lag luam. Yuav ua li cas kom ntseeg tau lub tshuab hluav taws xob nitrogen ua kom muaj purity nitrogen tsis tu ncua nyob rau lub sijhawm ntev thaum tswj kev siv hluav taws xob tsim nyog thiab kev saib xyuas tus nqi yog qhov kev txhawj xeeb tseem ceeb rau cov engineers thiab cov thawj coj tsim khoom.
Shenger Gas tau tsom mus ntev rau kev lag luam roj sib cais thev naus laus zis, suav nrog kev tsim vaj tsev dav dav hauv ob lub siab viav vias adsorption (PSA) thiab kev sib cais membrane. Kab lus no tau tshuaj xyuas cov txheej txheem engineering tom qab siab purity nitrogen ntau lawm los ntawm peb yam: cov ntsiab lus kev, yam cuam tshuam rau purity, thiab cov lus qhia tseem ceeb ntawm kev ua kom zoo dua qub.
Kev sib piv ntawm Ob Lub Ntsiab Cai Nitrogen Generation Technologies
Tam sim no, kev lag luam ntawm -site nitrogen tiam tsuas yog siv PSA nitrogen generators thiab membrane nitrogen generators, uas txawv heev nyob rau hauv purity ntau thiab siv tau.
PSA nitrogen tiam siv cov kev xaiv adsorption yam ntxwv ntawm carbon molecular sieves rau oxygen thiab nitrogen. Nyob rau hauv lub siab, carbon molecular sieves nyiam adsorb oxygen, carbon dioxide, thiab dej vapor, thaum nitrogen yog ncaj qha tso zis raws li tsis yog - adsorbed tivthaiv. Tom qab saturation, molecular sieve yog regenerated los ntawm ceev ceev ceev. Los ntawm alternating adsorption thiab desorption ntawm ob yees, nruam nitrogen ntau lawm. PSA thev naus laus zis tuaj yeem ruaj khov tso tawm nitrogen hauv qhov purity ntau ntawm 99.9% txog 99.9995%, ua rau nws tsim tshwj xeeb rau cov txheej txheem nrog cov ntsiab lus oxygen nruj.
Membrane nitrogen tiam tso siab rau qhov sib txawv ntawm qhov sib txawv ntawm cov pa roj sib txawv los ntawm hollow fiber membranes. Gases nrog ceev permeation tus nqi, xws li oxygen thiab dej vapor, nyiam dua dhau los ntawm cov phab ntsa membrane thiab tawm, thaum nitrogen, nrog ib tug qeeb permeation tus nqi, yog enriched. Cov tshuab no feem ntau tsim cov nitrogen nrog cov purities xws li 97% mus rau 99.9%. Nws qhov zoo muaj xws li cov qauv yooj yim, tsis muaj qhov txav mus los, thiab kev pib sai, ua rau nws tsim nyog rau cov xwm txheej uas yuav tsum muaj purity yog nruab nrab tab sis yuav tsum tau siv roj txuas ntxiv thiab ruaj khov.
Thaum lub hom phiaj purity siab tshaj 99.9%, PSA nitrogen generators yuav luag tsuas yog kev lag luam zoo ntawm -site nitrogen tsim tshuaj.
Peb qhov tseem ceeb Engineering Factors cuam tshuam rau Nitrogen Purity
Hauv kev ua haujlwm tiag tiag, kev sib txawv feem ntau tshwm sim ntawm qhov tseeb nitrogen purity uas tsim los ntawm lub tshuab hluav taws xob nitrogen thiab tus nqi tsim. Peb yam hauv qab no yog qhov tseem ceeb tshaj plaws.
Degradation ntawm carbon molecular sieve kev ua tau zoo yog thawj qhov ua rau. Tom qab lub sij hawm ntev raug rau cov roj pos huab, kua dej, los yog cov khoom uas nyob rau hauv compressed cua, lub micropores ntawm molecular sieve maj mam ua thaiv los yog puas, ua rau txo adsorption muaj peev xwm. Qhov no yog tshwj xeeb tshaj yog hais tias thaum lub pretreatment system yog tsis txaus configured, accelerating lub deterioration ntawm molecular sieve thiab ncaj qha manifesting raws li ib tug tsis tu ncua ntawm nitrogen purity.
Kev sib raug zoo ntawm adsorption siab thiab roj ntau lawm yog qhov tseem ceeb sib npaug. Adsorption efficiency nyob rau hauv PSA nitrogen tiam yog zoo correlated nrog siab, tab sis ntau heev siab tsub kom cov neeg kho tshuab hnav ntawm lub molecular sieve, thaum uas tsis tshua muaj siab ua rau oxygen breakthrough, ua rau ib tug ntse poob nyob rau hauv nitrogen purity. Tsis tas li ntawd, kev tsim cov pa roj ntau dhau ua rau txo lub sijhawm nyob ntawm huab cua nyob rau hauv lub adsorption ntauwd, tso cai rau cov pa oxygen nkag mus rau hauv cov kav dej nitrogen ua ntej ua kom tag nrho adsorbed. Kev sib raug zoo ntawm lub siab thiab ntws yog lub hauv paus rau kev ruaj khov purity.
Lub precision ntawm valve hloov lub sij hawm yog feem ntau overlooked. PSA nitrogen systems cia siab rau lub sijhawm hloov pauv ntawm pneumatic li qub kom tiav adsorption thiab rov tsim dua tshiab. Yog tias hloov lub sij hawm drifts los yog qhov kev txiav txim ntawm lub valve qeeb, nws tuaj yeem ua rau hla -kev sib kis ntawm cov pej thuam lossis kev tsim kho tsis tiav, qhia txog kev kis cov pa oxygen. High purity nitrogen ntau lawm feem ntau yuav tsum tau lub sij hawm raug ntawm qhov kev txiav txim ntawm milliseconds.
Plaub Txoj Cai Qhia Txog Kev Ua Haujlwm Zoo
Txhawm rau daws cov teeb meem saum toj no, kev ua kom zoo tshaj plaws tuaj yeem ua tiav hauv plaub cov lus qhia hauv qab no hauv kev ua haujlwm engineering.
Ua ntej, ntxiv dag zog rau compressed cua pretreatment. Compressed cua nkag mus rau hauv lub tshuab hluav taws xob nitrogen yuav tsum raug tshem tawm cov roj kom zoo, lub tub yees kom qhuav, thiab pom tseeb. Nws raug nquahu kom siv cov roj-dawb cua compressor lossis yam tsawg kawg ntawm cov roj catalytic oxidation tshem tawm kom ntseeg tau cov roj seem hauv qab 0.01 ppm. Tsis tas li ntawd, lub tshuab ziab khaub ncaws cua txias nrog cov dej lwg tswj hauv qab -40℃yuav tsum tau nruab rau hauv paus tshem tawm kev puas tsuaj rau cov molecular sieve los ntawm cov roj thiab dej.
Thib ob, optimize adsorption ntauwd qauv thiab siab sib npaug txheej txheem. Tsim kom muaj qhov sib piv thiab cov qauv kev faib roj ntawm cov adsorption ntauwd zoo txo cov maldistribution thiab cov chaw tuag. Tsis tas li ntawd, ntxiv cov qib siab sib npaug ntawm sab saum toj thiab hauv qab hauv cov txheej txheem PSA ntsuas qhov sib txawv ntawm qhov sib txawv ntawm ob lub yees ua ntej hloov, txo qhov cuam tshuam ntawm cov roj ntws cuam tshuam rau ntawm lub txaj molecular sieve, yog li txhim kho nitrogen rov qab thiab purity stability.
Thib peb, siv purity control interlock regulation. Nruab ib qho online oxygen analyzer nyob rau hauv lub qhov hluav taws xob qhov hluav taws xob pipeline, interlocked nrog lub qhov cua valve thiab ib tug ntau lawm tswj valve. Thaum kuaj pom cov ntsiab lus ntawm cov pa oxygen ntau tshaj qhov chaw pib, lub kaw lus cia li tso tawm -spec nitrogen thiab nplua -tunes cov roj ntau lawm lossis adsorption siab los tiv thaiv cov pa tsis zoo los ntawm cov txheej txheem hauv qab. Qhov kev ntsuas no tseem ceeb tshwj xeeb rau siab -tus nqi- ntxiv cov kab ntau lawm.
Plaub, tsim kom muaj kev saib xyuas raws sij hawm. Tsis tu ncua kuaj lub attenuation nkhaus ntawm molecular sieve adsorption kev ua tau zoo, ua ke nrog cov sij hawm ua hauj lwm thiab cov ntaub ntawv dew point, los kwv yees lub molecular sieve hloov lub voj voog. Tsis tas li, tshawb xyuas lub sijhawm teb ntawm pneumatic li qub thiab hloov lub valve cores lossis seals thaum tsim nyog. Kev saib xyuas yuav tsum yog kev tswj xyuas kev tiv thaiv raws li cov ntaub ntawv, tsis yog kev kho kom rov zoo.
Kev txiav txim siab nyiaj txiag rau High Purity Nitrogen Systems
Ntau tus neeg siv tsom mus rau kev ntsuas kev ntsuas thaum feem ntau saib xyuas qhov system tag nrho cov nqi ntawm lub neej. Ib qhov zoo- tsim lub tshuab hluav taws xob siab purity nitrogen, txawm hais tias muaj kev nqis peev me ntsis siab dua li cov qauv kev teeb tsa, feem ntau rov qab tau cov peev txheej ntxiv hauv 12 mus rau 18 lub hlis los ntawm kev txo qis molecular sieve hloov zaus, txo qis venting poob ntawm - spec nitrogen, thiab txuas ntxiv lub sij hawm ntawm kev ua tsis tiav.
Qhov tseem ceeb tshaj, cov nqi zais ntawm qhov tsis txaus purity feem ntau nyob deb tshaj tus nqi ntawm cov cuab yeej nws tus kheej. Nyob rau hauv ib qho khoom siv hluav taws xob ntau lawm kab, ib qho kev tsis lees paub los ntawm nitrogen purity fluctuations tuaj yeem raug nqi ntau npaum li tag nrho cov tshuab hluav taws xob nitrogen tshiab. Yog li ntawd, hloov qhov kev ua kom zoo dua qub los ntawm "kev xaiv" mus rau "tseem ceeb" yog qhov kev xaiv muaj txiaj ntsig hauv cov ntawv thov nitrogen siab.
Kev ruaj khov siab purity nitrogen tso zis tsis yog ib qho kev ua haujlwm ntawm ib qho khoom siv nkaus xwb tab sis qhov tshwm sim los ntawm kev sib xyaw ua ke ntawm compressed cua pretreatment, molecular sieve xaiv, adsorption ntauwd qauv, tswj lub tswv yim, thiab kev saib xyuas. Tus nqi ntawm lub tshuab hluav taws xob nitrogen tsis nyob hauv seb nws puas tuaj yeem tsim tau 99.999% nitrogen, tab sis seb nws puas tuaj yeem tswj hwm qhov kev coj dawb huv no tom qab ntau txhiab teev ua haujlwm tas li.
