Hauv ntau cov nroj tsuag kev lag luam, lub siab viav vias adsorption (PSA) nitrogen generators maj mam poob purity, tawm tsam kom ntaus 99% setpoint. Yog tias tsis hais sai sai, qhov no cuam tshuam ncaj qha rau cov txheej txheem qis qis thiab cov khoom lag luam zoo. Feem ntau cov teeb meem purity tsis tas yuav hloov lub tshuab tag nrho - lawv kav los ntawm ob peb qhov tseem ceeb. Hauv qab no yog ib kauj ruam -los ntawm - kauj ruam qhia kev daws teeb meem raws li qhov tiag - ntiaj teb tej yam kev mob.
Tshawb xyuas qhov tseeb ntawm koj txoj kev ntsuas
Thaum koj pom "purity qis dua 99%," tsis txhob pib kho lub tshuab ua ntej. Xyuas seb koj qhov ntsuas ntsuas puas ntseeg tau. Cov khoom siv teb xws li paramagnetic oxygen analyzers, zirconia analyzers, lossis electrochemical sensors tuaj yeem ya raws sijhawm. Siv tus qauv roj (xws li, 99.99% nitrogen) rau kev kuaj ceev. Yog tias kev nyeem ntawv deviates ntau dua ± 0.5%, ntsuas qhov ntsuas ua ntej ua haujlwm. Tsis tas li, tshawb xyuas qhov piv txwv- yog tias tus kais dej nyob ze dhau ntawm cov kab hluav taws xob, lossis yog tias muaj cov xau lossis cov ntim tuag nyob hauv kab, huab cua ingress tuaj yeem ua rau qis qhov kev nyeem ntawv.
Tshawb xyuas qhov ua tsis tiav lossis hmoov carbon molecular sieve
Lub plawv ntawm PSA nitrogen generator yog carbon molecular sieve (CMS). Yog tias nitrogen purity maj mam poob thiab kho cov roj tso tawm tsis pab, CMS yog qhov ua txhaum. Feem ntau ua rau:
1. Kev tshem tawm cov roj av / dej tsis txaus-cov roj pos huab thiab cov dej noo nkag mus rau hauv cov adsorber thiab coated lub sieve micropores, txo cov kev sib cais.
2. Ntuj hmoov lub sij hawm (feem ntau yog 3-5 xyoos), thaiv cov silencers los yog equalization li qub.
Kev kuaj xyuas nrawm: kaw, kaw lub pej thuam, thiab qhib qhov chaw nres nkoj kom pom tias cov hmoov dub tawm los. Pom pom hmoov txhais tau tias lub sieve muaj hmoov thiab xav tau kev hloov.
Tshawb xyuas valve seals thiab lub sijhawm ua ntu zus
Hnav foob rings lossis spool puas nyob rau hauv pneumatic thiab solenoid li qub tuaj yeem ua rau hla - tham ntawm adsorbers lossis tsis txaus siab sib npaug. Qhov teeb meem no yooj yim plam vim lub tshuab tseem khiav -purity cia li maj mam nqis. Mloog rau lub suab hloov lub suab nrov, thiab siv cov dej xab npum nyob ib ncig ntawm lub cev lub cev thiab kev sib txuas kom pom cov npuas. Tsis tas li ntawd, yog tias lub sijhawm hloov pauv ntawm PLC tau hloov kho manually lossis puas (piv txwv li, tom qab hluav taws xob tawm), lub voj voog adsorption yuav cuam tshuam. Muab piv rau lub Hoobkas tsis muaj thiab recalibrate txhua kauj ruam.
Xyuas pem hauv ntej- kawg compressed cua zoo
Nitrogen generator lub feedstock yog compressed cua. Yog hais tias cov huab cua los ntawm lub compressor muaj ib tug siab dew point (dhau ya raws) los yog cov ntsiab lus roj ntau dhau, CMS lub neej poob qis heev. Tej yam xwm txheej: degraded kev ua tau zoo ntawm lub tub yees los yog desiccant cua tshuab, los yog clogged / puas precision lim ntsiab. Ntsuas cov cua compressed ua ntej nws nkag mus rau lub tshuab hluav taws xob: siab dew point Tsawg dua lossis sib npaug rau -40 degree, cov roj seem tsawg dua lossis sib npaug rau 0.01 ppm. Yog tias cov xwm txheej no tsis tau ua tiav, txawm tias CMS tshiab yuav ua tsis tau dua. Tsis tas li ntawd, nco ntsoov cov cua kub cua kub-siab tshaj 40℃txo cov sieve dynamic adsorption muaj peev xwm.
Kho cov zis tso zis thiab tsis cia
Qee qhov chaw thawb cov khoom tso tawm siab tshaj qhov ntsuas ntws kom tau raws li cov hom phiaj tsim khoom. Thaum cov dej ntws dhau qhov kev txwv tsim, lub sij hawm nyob hauv cov pa hauv lub adsorber shortens, thiab purity poob. Sim kaw lub qhov hluav taws xob ntws valve los ntawm 10-20% thiab saib yog tias purity rov qab los. Yog tias ua tau, koj tau tshaj tawm. Kev xyaum zoo tshaj plaws: khiav ntawm 90-100% ntawm cov ntawv sau npe khiav, thiab xyuas kom txaus tsis txaus tank ntim hauv qab kom du tawm qhov xav tau spikes.
Saib rau micro- cov pa tawm hauv cov kav dej
Cov xau me me hauv cov kav dej, li qub, lossis fittings nruab nrab ntawm lub tshuab hluav taws xob qhov hluav taws xob thiab qhov chaw siv -tshwj xeeb tshaj yog nyob rau hauv sib quas ntus - siv cov tshuab uas lub qhov hluav taws xob pom huab cua los yog tsis zoo siab - tuaj yeem nqus tau hauv huab cua. Siv lub tshuab nqus dej los yog xab npum los xyuas txhua qhov kev sib txuas. Threaded pob qij txha thiab thawb- mus rau- txuas fittings yog qhov chaw feem ntau rau hnub nyoog- ntsig txog kev xoob.
Ua raws li qhov kev txiav txim no rau kev daws teeb meem ceev tshaj plaws
Thaum purity poob qis dua 99%, cov lus pom zoo yog:
1. Txheeb xyuas qhov tseeb →
2. Xyuas CMS mob →
3. Tshawb xyuas li qub thiab lub sijhawm →
4. Txheeb xyuas cov huab cua sab saum toj zoo thiab cov zis ntws tawm.
Kwv yees li 80% ntawm cov teeb meem muaj nyob hauv thawj ob kauj ruam. Kev tu cua compressed niaj hnub, nrog rau cov lim dej tsis tu ncua thiab hloov pauv lub valve, tiv thaiv kev hloov pauv ntawm purity feem ntau.
Yog tias koj tau sim tag nrho cov saum toj no thiab tseem muaj teeb meem, Shenger Gas Technology pom zoo kom kuaj xyuas qhov systematic siv lub ntsuas dej dew point thiab cov roj seem nyob hauv lub ntsuas ntsuas - dua li rov ua dua kev sim. Feem ntau, ib qho kev ntsuam xyuas zoo txuag nyiaj ntau dua li kev sib pauv qhov muag tsis pom kev.
