Kuyerwa kweUrea Concentration muDenitration Processes
Mitemo yakasimba yehunhu hwemhepo pasi rose inoda kuti maindasitiri adzore kuburitswa kwenitrogen oxide (NOx). Urea, chinhu chakachengeteka uye chakasimba, chinowanzoshandiswa mu denitration systems kuderedza NOx. Chinhu chikuru ndechekuenzanisa huwandu hweurea inopinzwa nemazinga eNOx ari mu flue gas kuti pave nekuderedzwa kweNOx kwaunoda pasina matambudziko.
UKuisa makemikari muropa zvishoma hakukwanisi kuderedza NOx zvakakwana, zvichikonzera kusatevedzera mitemo. Kuisa marara akawanda muropa kunogadzirisa zvinhu, kunowedzera mitengo, uye kunokonzera "ammonia slip" - ammonia isina kugadziriswa ichipinda mumhepo. Kuisa makemikari muropa kunodhura, kunokuvadza nharaunda, uye kunogona kugadzira munyu unonamira seammonium bisulfate neammonium sulfate, izvo zvinosvibisa michina, zvinoderedza kushanda zvakanaka, uye zvinokonzera kukuvara.
Matambudziko eKutarisa Urea Pamhepo
Kusvibisa, Kugadzira Makristalo, uye Kuora
Kusvibisaidambudziko rinoramba riripo, kunyanya kana mvura yakaoma ichishandiswa kuderedza urea feedstock yakasimba. Zvicherwa zviri mumvura yakaoma zvinogona kubuda mumushonga, zvichikonzera kuvharika uye kuvharika kwezvikamu zvakakosha, kusanganisira majekiseni emushonga nemasensa. Chiitiko ichi chinogona kukonzera kuyerwa kusina kururama uye kuda kugadziriswa nguva nenguva uye kuchenesa kunodhura, zvichideredza zvakanyanya kushanda kwesystem.
Kugadzirwa kwekristarozvinogona kuitika pakupisa kwakaderera kweutsi (kazhinji pasi pe200−250∘C) uye pamusoro apo mhinduro yeurea inorova madziro epombi, zvichiita firimu. Firimu gobvu, rinowanzo kukonzerwa nekuwedzera kwehuwandu hwespray kana saizi yemadonhwe, rinoita kuti zviomere mamorekuru eurea kupera zvachose, zvichikonzera kuumbwa kwekristaro. Maitiro aya ndiwo anonyanya kukonzera kuvharika kwe sensor ne nozzle.
Thehunhu hunoparadzayemushonga weurea pachayo inokonzera njodzi huru kumidziyo. Kugadzirwa kweurea kunosanganisira kuumbwa kweammonium carbamate, chinhu chinoparadza zvakanyanya chinogona kukurumidza kuparadza zvinhu zvemazuva ese, zvichikonzera kutadza kushanda kwemidziyo. Saka kusarudzwa kwezvinhu zvemidziyo kunofanira kuva chinhu chikuru chekufunga nezvacho, sezvo zvikamu zvakajairwa zvinogona kusashanda uye zvinoda kutsiviwa nguva dzose munzvimbo iyi ine hukasha.
Une mibvunzo nezve kugadzirisa maitiro ekugadzira？
Simba reMamiriro Ekuita Maitiro Akafanana paKuyera
Hunhu hwemvura pachayo hunokonzera kuomarara kwekuyera nemazvo. Kuwanda kwemvura inoyerera kunonyanya kukanganiswa nekupisa nekumanikidzwa. Kunyangwe shanduko diki mukupisa kunogona kukanganisa zvakanyanya huwandu hwenitrogen yeurea yakayerwa. Kuverenga kunogona kupararira zvakanyanya uye kupa data risiri iro kune system yekudzora pasina muripo wakakodzera wekupisa. Kusiyana uku kunoratidza kudiwa kukuru kwesensa yeurea concentration inosanganisira muripo wekupisa panguva chaiyo yekugadzirisa kushanduka uku kwemaitiro.
Saizvozvowo, zvinhu zvakaita sekumhanya kwekuyerera, viscosity, uye kuvapo kwemabubble emhepo akagadziriswa zvinogona kukonzera kusagadzikana kukuru kwekuyera uye zvikanganiso, zvichida dhizaini ye sensor yakasimba uye yakavimbika mumamiriro ekushanda anochinja-chinja.
Mhinduro yeLonnmeter: Meter yeUrea Concentration
Nheyo yekushanda kweSensor yeUrea Concentration
Muchina wekuyeresa urea muchikamu chekushanda i sensor iri mukati memutsara inoshandiswa pakuyera huwandu hwemvura mumapaipi, matangi nedzimwe midziyo. Frequency ye resonant fork inodedera inochinja zvichienderana nehuremu nehuremu hwemvura yakaipoteredza. Sensor iyi ine forok yakaita seU inofambiswa nemagetsi kuti idedere pafrequency chaiyo ye resonant. Kana forok iyi yanyikwa mumvura, huremu hwemvura hunowedzera huremu hunoshanda hwefork, zvichiita kuti vibration frequency yayo iderere. Electronics yepamusoro ye sensor inoramba ichitarisa frequency iyi. Nekubatanidza frequency iyi ne pre-programmed calibration curve, chishandiso ichi chinogona kupa chiyero chakarurama uye chinodzokororwa chehuwandu hwemvura.
Chinhu chitsva chaicho chiri mukushandurwa kubva pakuverenga density zvishoma kusvika pakushanda kwehuwandu hwehuwandu. Lonnmeter inoita izvi nekubatanidza sensor yekupisa yakanyatsojeka zvakananga muprobe. Iyi sensor inopa data rekupisa panguva chaiyo kuyuniti yekugadzirisa mukati, iyo inobva yashandisa algorithm yekupisa tembiricha yakaoma. Maitiro aya anogadzirisa kuverenga kwehuwandu hwe ...
Magadzirirwo echinhu chinonzi tuning fork sensor anopa mukana wakakura munzvimbo yakaoma yekubvisa tsvina. Pasina maburi madiki, nzira dzakamanikana, kana diaphragms dzakapfava, sensor iyi inodzivirira kusvibiswa uye kuumbwa kwekristaro kunotambudza mamwe matekinoroji. Maumbirwo ayo akasimba uye akavhurika anobvumira mvura kuyerera zvakasununguka kutenderedza matine anodedera, zvichideredza mukana wekuti mineral deposits kana urea crystals zviungane uye zvikanganise kuyerwa.
Dzidza NezveMamwe Mamita Ehuremu
Yakagadzirwa kuti ishandiswe munzvimbo dzeDenitration
Nekuziva mamiriro akaipisisa emuchina wekuchenesa, Lonnmeter yakagadzira masensa ayo nesainzi yezvinhu zviri pamberi. Zvikamu zvikuru zvemuchina uyu zvakagadzirwa nezvinhu zvakasimba zvakaita se316 stainless steel, zvichipa simba rakawanda rekudzivirira ngura yemakemikari, kunyanya kubva kuzvinhu zvine simba zvakanyanya seammonium carbamate. Zvinhu zvinodzivirira ngura zvinowedzera hupenyu hwemuchina wekuyera huwandu, nguva dzekuchengetedza, uye kudzikira kwenguva isina kurongwa yekushanda.
Sensor yekupisa yakabatanidzwa pamwe nemaalgorithms akaomarara zvinotsiva kusiyana kwekupisa, zvichiita kuti kuverenga kuve kwakasimba uye kwakavimbika pasinei nekuchinja-chinja kwemvura yekushanda.
Kubatanidzwa uye Kubatana Kwakatsetseka
Kubuda kweLonnmeter kwe4-20mA current loop kunobatanidzwa zviri nyore nePLC kana DCS systems nekuti:
- Kubatanidza waya kuri nyore:Sechinotumira mashoko chine waya mbiri, chinoshandisa waya imwe chete yemagetsi uye yekutumira mashoko, zvichideredza kuoma kwekushandisa.
- Chiratidzo Chakavimbika:Chiratidzo che4-20mA hachidzivirirwi nekudonha kwemagetsi padaro refu uye hachidzivirirwi neruzha rwemagetsi uye kukanganiswa kwemagetsi.
- Kuyera Mutsetse:Kune huwandu hwe 0-100%, 4mA inoenderana ne 0% uye 20mA kusvika 100%, zvichibvumira kuyera kwakananga musystem yekudzora.
- Yakachengeteka uye Yakagadzikana:Kudzika zvakanaka kwesensa casing kunoita kuti masaini anyatsojeka uye kuchengetedzeka kwemagetsi, zvichiita kuti zvienderane nemasisitimu emaindasitiri.
Nzvimbo Dzakanaka uye Mabhenefiti Anoshanda
Kushandiswa zvakanaka kwesensa yekuyera urea hakungorevi kuyera kwakarurama chete; asi zvakareva nezvenzvimbo chaiyo yekubatsira pakushanda.
Kugadzirira uye Kuchengeta Urea Solution
Chinhu chekutanga uye chinonyanya kunzwisisika chekuisa sensor ndechekutanga kwemaitiro ekubvisa urea solution: matangi ekugadzirira urea solution uye ekuchengetera. Sensor yakaiswa padanho iri inopa dziviriro yakakosha yekutanga yekudzora mhando, ichisimbisa kuti mhinduro yakagadzirirwa iri pahuwandu hwakakodzera isati yatotumirwa kusystem yedosing. Kuyera uku kunogona kuona zvikanganiso kubva mukusanganiswa kusina kunaka nemaoko, kusiyana kwemari yekudya kweurea yakasimba, kana kushandiswa kwemvura yakasviba, zvichidzivirira matambudziko aya kuti asapararire pasi uye kukanganisa maitiro ese. Kutarisa huwandu mutangi rekuchengetera kunopawo chishandiso chakakosha chekutarisira zvinhu, kuve nechokwadi chekuti pane reagent yakagadzirwa zvakanaka uye yakagadzirira kuwanikwa.
Kutarisa Mitsetse yeJekiseni neDosing
Kuti ikwanise kudzora kwechokwadi kweclosed-loop, muchina wekuyeresa urea unofanirwa kuiswa mujekiseni repamusoro-soro kana mumutsara wekuyeresa usati wapinda mujekiseni. Kuiswa uku kunopa chiyero chakananga uye chakarurama che reagent inopinda musystem munguva chaiyo. Iyi data rehupenyu ndiyo nheyo yematanho epamusoro ekudzora ayo anogara achigadzirisa mwero wejekiseni zvichibva pamazinga eflue gas NOx akayerwa, tembiricha ye catalyst, nezvimwe zvinoshandiswa.
Kunyange hazvo mamwe masisitimu ekudzora achifungidzira matambudziko kubva pakuchinja-chinja kwedzvinyiriro mumutsetse wedosing, kuyerwa kwakananga, kunoenderera mberi kweconcentration kunopa chiratidzo chakasimba uye chakavimbika. Inogona kuona zvikanganiso zvepombi, kuvharika kwechikamu, kana mamiriro ekuwedzera/kusakwana kwedosing, zvichiita kuti mhinduro ikurumidze, otomatiki isati yakanganiswa mashandiro esystem yeNOx. Maitiro aya anotamisa chirimwa kubva pakugadzirisa zvinoitwa ne reactive kuenda kune zvinoitwa ne proactive, predictional.
Kubatana neAmmonia Slip
Kukosha kwesensa yehuwandu hweurea kunopfuura nzvimbo imwe chete yedata. Nekupa ruzivo rwakasimba uye rwakavimbika, sensa inogonesa sisitimu yekudzora kutonga nemazvo chiyero chejekiseni re reagent, ichiva nechokwadi chekuti chiyero chakanakisa chestoichiometric chinochengetwa. Kunyatsojeka uku kunoenderana zvakananga nekudzikiswa kwekutsvedza kweammonia. Chiitiko chekuwedzerwa kwedosi chinogona kudzivirirwa munguva chaiyo, zvichideredza marara e reagent uye kukanganisa nharaunda kweutsi hweammonia husina kugadziriswa.
Kukosha kune Vatengi
- Kuderedzwa kweNOx uye Kutevedzera Mutemo Zvakasimba;
- Kuderedzwa kweKushandiswa kweReagent uye Mari dzeKushanda
- Kuwedzera Uptime uye Kuderedza Mitoro Yekuchengetedza
