I-Silicon Carbide FGD Nozzle ye-desulfurization endaweni yamandla

I-Flue Gas Desulfurization (FGD) Absorber Nozzles
Ukususwa kwama-sulphur oxides, avame ukubizwa ngokuthi i-SOx, kusuka kumagesi akhipha umoya usebenzisa i-alkali reagent, njenge-limestone slurry emanzi.

Uma izibaseli ezimbiwa phansi zisetshenziswa ezinqubweni zomlilo ukuze kuqhutshwe amabhayela, izithando zomlilo, noma ezinye izinto zokusebenza zinamandla okukhulula i-SO2 noma i-SO3 njengengxenye yegesi ephumayo. Lawa ma-sulfur oxides asabela kalula nezinye izakhi ukuze akhe isakhi esiyingozi njenge-sulfuric acid futhi anamandla okuba nomthelela omubi empilweni yomuntu kanye nemvelo. Ngenxa yale miphumela engaba khona, ukulawulwa kwalesi sithako kumagesi aphuma ku-flue kuyingxenye ebalulekile yezitshalo zokuphehla amandla ngamalahle nezinye izinhlelo zokusebenza zezimboni.

Ngenxa yokuguguleka komhlabathi, ukuxhunywa, nokukhathazeka ngokwakha, enye yezinhlelo ezinokwethenjelwa kakhulu zokulawula lokhu kukhishelwa yinqubo evulekile yomthombo we-wet flue gas desulfurization (FGD) esebenzisa i-limestone, i-hydrated lime, amanzi olwandle, noma esinye isixazululo se-alkaline. Iziduli zokufutha ziyakwazi ukusabalalisa ngempumelelo nangokuthembekile la ma-slurries emibhoshongweni yokumunca. Ngokwenza amaphethini afanayo amaconsi anosayizi ofanele, lawa mabhomu ayakwazi ukudala ngempumelelo indawo engaphezulu edingekayo ukuze amunce kahle kuyilapho enciphisa ukugxiliswa kwesisombululo sokukhuhla kugesi ephuma amanzi.

Ukukhetha i-FGD Absorber Nozzle:
Izici ezibalulekile okufanele zicatshangelwe:

Ukuxubha ukuminyana kwemidiya kanye ne-viscosity
Usayizi weconsi odingekayo
Usayizi wamaconsi ofanele ubalulekile ukuze kuqinisekiswe amazinga afanele wokumunca
Izinto zeNozzle
Njengoba i-flue gas ivame ukugqwala futhi uketshezi lokukhuhla kuvame ukuba wudaka olunokuqukethwe okuqinile okuphezulu kanye nezinto ezilimazayo, ukukhetha ukugqwala okufanele kanye nezinto ezimelana nokugqoka kubalulekile.
Ukumelana ne-Nozzle clog
Njengoba uketshezi lokukhuhla kuvame ukuba ludaka olunokuqukethwe okuqinile okuphezulu, ukukhethwa kwembobo maqondana nokumelana nokuvala kubalulekile.
Iphethini ye-nozzle spray kanye nokubekwa
Ukuze kuqinisekiswe ukumuncwa okufanele okuphelele kokugeleza kwegesi ngaphandle kokudlula futhi isikhathi esanele sokuhlala sibalulekile.
Usayizi woxhumano lwe-Nozzle nohlobo
Amazinga okugeleza kwamanzi okukhuhla adingekayo
Ukwehla kwengcindezi okutholakalayo (∆P) ku-nozzle
∆P = nikeza ingcindezi endaweni yokungena emlonyeni – cindezela ingcindezi ngaphandle kwenozzle
Onjiniyela bethu abanolwazi bangasiza ekunqumeni ukuthi iyiphi i-nozzle ezosebenza njengoba kudingekile ngemininingwane yedizayini yakho
Ukusetshenziswa Okujwayelekile KweNozzle ye-FGD Absorber Nezimboni:
Amalahle nezinye izimboni zamandla kaphethiloli
Izihlungi ze-Petroleum
Izishisi zemfucuza zikamasipala
Iziko likasimende
Izincibilikisi zensimbi

I-SiC Material Datasheet

Okungalungi nge-Lime/Limestone

Njengoba kukhonjisiwe kuMfanekiso 1, amasistimu e-FGD asebenzisa i-lime/limestone oxidation ephoqelelwe (LSFO) afaka amasistimu amancane amathathu amakhulu:

• Ukulungiswa kwe-reagent, ukuphatha kanye nokugcinwa
• Umkhumbi we-absorber
• Ukuphatha imfucuza kanye nomkhiqizo

Ukulungiswa kwe-reagent kuhlanganisa ukudlulisa i-limestone echotshoziwe (i-CaCO3) isuka esiseleni iye ethangini lokuphakelayo elinyakazayo. I-limestone slurry ewumphumela bese iphonswa emkhunjini wokumunca kanye negesi ye-boiler flue kanye nomoya oxidizing. Iziduli zokufutha ziletha amaconsi amahle ezinto ezinyakazayo abese egeleza ngokuphikisana negesi ephumayo engenayo. I-SO2 ku-flue gas ihlangana ne-calcium-rich reagent yakhe i-calcium sulfite (CaSO3) ne-CO2. Umoya owethulwa ku-absorber ukhuthaza i-oxidation ye-CaSO3 ku-CaSO4 (ifomu le-dihydrate).

Ukusabela okuyisisekelo kwe-LSFO yilezi:

I-CaCO3 + SO2 → CaSO3 + CO2 · 2H2O

I-slurry ene-oxidized iqoqa phansi kwesibambi bese igaywa kabusha kanye ne-reagent entsha ibuyiselwe kumaheda omlomo wesifutho. Ingxenye yokusakaza okugaywe kabusha ikhishelwa kusistimu yokuphatha imfucuza/umkhiqizo, ngokuvamile equkethe ama-hydrocyclone, izihlungi zogubhu noma zebhande, kanye nethangi elibamba amanzi angcolile/utshwala. Amanzi angcolile asuka ethangini lokubamba aphinde asetshenziswe kabusha abuyiselwe ethangini lokuphakelayo le-limestone reagent noma ku-hydrocyclone lapho ukuchichima kukhishwa khona njengokungcola.

I-Lime/Limestone Ephoqelelwe I-Oxidatin Yenqubo Yokukhuhla Emanzi

Amasistimu we-LSFO amanzi ngokuvamile angakwazi ukufeza ukusebenza kahle kokususa kwe-SO2 ngamaphesenti angama-95-97. Ukufinyelela emazingeni angaphezu kwamaphesenti angama-97.5 ukuze kuhlangatshezwane nezidingo zokulawula ukungcola, nokho, kunzima, ikakhulukazi ezitshalweni ezisebenzisa amalahle anesulfure ephezulu. Ama-catalysts e-Magnesium angengezwa noma i-limestone ingabalwa ku-lime ye-reactivity ephezulu (CaO), kodwa ukuguqulwa okunjalo kuhilela imishini yezitshalo eyengeziwe kanye nezindleko zomsebenzi namandla ahlobene. Isibonelo, ukwenza i-calcining kumcako kudinga ukufakwa kwehhavini elihlukile le-lime. Futhi, umcako unemvula kalula futhi lokhu kwandisa amandla okwakheka kwediphozi yesikali ku-scrubber.

Izindleko zokubala nge-lime kiln zingancishiswa ngokujova ngokuqondile i-limestone esithandweni sokubhaka. Ngale ndlela, i-lime ekhiqizwe kubhoyili ithuthwa ngegesi ye-flue iye ku-scrubber. Izinkinga ezingaba khona zihlanganisa ukonakala kukabhayela, ukuphazamiseka kokudluliswa kokushisa, nokungasebenzi kwe-lime ngenxa yokushiswa ngokweqile kubhayela. Ngaphezu kwalokho, umcako unciphisa izinga lokushisa lokugeleza komlotha oncibilikisiwe kumabhoyela abaswa amalahle, okuphumela ekufakweni okuqinile obekungeke kwenzeke.

Udoti owuketshezi ophuma kunqubo ye-LSFO ngokuvamile uqondiswe emachibini okusimamisa kanye nodoti owuketshezi ovela kwenye indawo endaweni yokuphehla amandla. Uketshezi olumanzi lwe-FGD olumanzi lungagcwaliswa ngenhlanganisela ye-sulfite ne-sulfate futhi ukucatshangelwa kwemvelo kuvame ukukhawulela ukukhululwa kwawo emifuleni, imifudlana noma eminye imigudu yamanzi. Futhi, ukugaywa kabusha kwamanzi angcolile / utshwala emuva ku-scrubber kungaholela ekwakhekeni kwe-sodium encibilikisiwe, i-potassium, i-calcium, i-magnesium noma i-chloride usawoti. Lezi zinhlobo zingagcina zicwebezele ngaphandle uma kunikezwa ukopha okwanele ukuze kugcinwe ukugcwala kukasawoti oncibilikisiwe kungaphansi kokugcwala. Inkinga eyengeziwe yizinga lokuzinzisa kancane kwezibi, okuholela esidingweni samachibi amakhulu, anevolumu ephezulu yokusimamisa. Ezimweni ezijwayelekile, ungqimba olulungisiwe echibini lokuzinzisa lungaqukatha amaphesenti angu-50 noma isigaba soketshezi esingaphezulu ngisho nangemva kwezinyanga ezimbalwa zokulondoloza.

I-calcium sulfate etholakala ku-absorber recycle slurry ingaba phezulu kumlotha we-limestone ongaphenduliwe kanye nomlotha we-calcium sulfite. Lokhu kungcola kungavimbela i-calcium sulfate ukuthi ingathengiswa njenge-synthetic gypsum ukuze isetshenziswe ebhodini lodonga, ukhonkolo, nokukhiqizwa kukasimende. I-limestone engaphenduliwe ukungcola okuvame kakhulu okutholakala ku-synthetic gypsum futhi ibuye ibe ukungcola okuvamile ku-gypsum yemvelo (embiwa). Nakuba i-limestone ngokwayo ingaphazamisi izici zemikhiqizo yokuphela kwe-wallboard, izici zayo ezilimazayo ziveza izinkinga zokuguga zokucubungula okokusebenza. I-calcium sulfite iwukungcola okungafuneki kunoma iyiphi i-gypsum njengoba usayizi wayo wezinhlayiyana ezinhle udala izinkinga zokukala nezinye izinkinga zokucubungula ezifana nokuwashwa kwamakhekhe nokuwakhipha amanzi.

Uma izinto eziqinile ezikhiqizwe ohlelweni lwe-LSFO zingadayiseki njenge-synthetic gypsum, lokhu kudala inkinga enkulu yokulahlwa kukadoti. Kubhayela we-1000 MW odubula i-1% yamalahle esulfure, inani legypsum licishe libe ngamathani angama-550 (amafushane) / ngosuku. Kuso lesi sitshalo esidubula amalahle esibabule amaphesenti ama-2, ukukhiqizwa kwe-gypsum kuyenyuka kuye cishe kumathani ayi-1100/ngosuku. Ukwengeza amathani ayi-1000/ngosuku okukhiqizwa komlotha wezimpukane, lokhu kuletha isamba semfucumfucu eqinile ibe amathani angaba ngu-1550/ngosuku endaweni eyiphesenti elilodwa lesitsha samalahle esibabule kanye namathani angu-2100/ngosuku ku-2 wamaphesenti wesibabule.

Izinzuzo ze-EADS

Enye indlela yobuchwepheshe efakazelwe esikhundleni sokukhuhla i-LSFO ingena esikhundleni se-limestone nge-ammonia njengesisebenzi sokususwa kwe-SO2. I-reagent reagent eqinile yokugaya, ukugcinwa, ukuphatha kanye nezingxenye zokuthutha ohlelweni lwe-LSFO zithathelwa indawo amathangi alula okugcina e-ammonia enamanzi noma anhydrous. Umfanekiso 2 ubonisa isikimu sokugeleza sohlelo lwe-EADS olunikezwa yi-JET Inc.

I-Amonia, i-flue gas, umoya oxidizing namanzi acutshungulwayo kungena emshinini wokumunca oqukethe amazinga amaningi emibhobho yesifutho. Imibhobho ikhiqiza amaconsi amahle e-reagent equkethe i-ammonia ukuze kuqinisekiswe ukuthintana okuseduze kwe-reagent ne-flue gas engenayo ngokuya ngokusabela okulandelayo:

(1) SO2 + 2NH3 + H2O → (NH4)2SO3

(2) (NH4)2SO3 + ½O2 → (NH4)2SO4

I-SO2 emfudlaneni wegesi yomkhuhlane ihlangana ne-ammonia engxenyeni engenhla yomkhumbi ukuze ikhiqize i-ammonium sulfite. Iphansi lomkhumbi odonsa amanzi lisebenza njengethangi le-oxidation lapho umoya oxidizes i-ammonium sulfite ibe i-ammonium sulfate. Isixazululo se-ammonium sulfate esiwumphumela siphindiselwa emuva kumaheda omlomo wesifutho kumaleveli amaningi kusixhumi. Ngaphambi kokuthi igesi ehlutshiweyo ephuma phezulu kwesibambisi, idlula endaweni ewuketshezi ehlanganisa noma imaphi amaconsi oketshezi afakiwe bese ibamba izinhlayiya ezincane.

Ukusabela kwe-ammonia nge-SO2 kanye ne-sulfite oxidation ku-sulfate kufinyelela izinga eliphezulu lokusebenzisa i-reagent. Amakhilogremu amane e-ammonium sulfate akhiqizwa ngephawundi ngalinye le-ammonia elisetshenzisiwe.

Njengenqubo ye-LSFO, ingxenye ye-reagent/ukusakaza okugaywe kabusha komkhiqizo ingahoxiswa ukuze kukhiqizwe umkhiqizo wokuthengisa. Ohlelweni lwe-EADS, isixazululo somkhiqizo wokusuka siphontshelwa ohlelweni lokubuyisela izinto eziqinile ezihlanganisa i-hydrocyclone ne-centrifuge ukuze kugxiliswe umkhiqizo we-ammonium sulfate ngaphambi kokoma nokupakishwa. Lonke uketshezi (i-hydrocyclone echichimayo kanye ne-centrifuge centrate) iqondiswa emuva ethangini le-slurry bese iphinda yethulwa ku-absorber ammonium sulfate recycle stream.

• Amasistimu e-EADS ahlinzeka ngokusebenza ngempumelelo okuphezulu kwe-SO2 (>99%), okunikeza izitshalo zamandla kagesi amalahle ukuguquguquka okwengeziwe ukuze kuhlanganiswe amalahle ashibhile, aphezulu esibabule.
• Nakuba izinhlelo ze-LSFO zenza amathani angu-0.7 e-CO2 kuwo wonke amathani e-SO2 asusiwe, inqubo ye-EADS ayikhiqizi i-CO2.
• Ngenxa yokuthi i-lime kanye ne-limestone akusebenzi kangako uma kuqhathaniswa ne-ammonia ekususweni kwe-SO2, ukusetshenziswa kwamanzi kwenqubo ephakeme namandla okumpompa kuyadingeka ukuze kuzuzwe amazinga aphezulu okujikeleza. Lokhu kubangela izindleko eziphakeme zokusebenza zezinhlelo ze-LSFO.
• Izindleko ezinkulu zezinhlelo ze-EADS ziyefana nalezo zokwakha uhlelo lwe-LSFO. Njengoba kuphawuliwe ngenhla, kuyilapho uhlelo lwe-EADS ludinga i-ammonium sulfate byproduct processing kanye nemishini yokupakisha, izindawo zokulungiselela i-reagent ehambisana ne-LSFO azidingeki ekugayweni, ekuphatheni nasekuthuthweni.

Inzuzo ehluke kakhulu ye-EADS ukuqedwa kwakho kokubili udoti owuketshezi noqinile. Ubuchwepheshe be-EADS yinqubo yokukhipha i-zero-liquid-discharge, okusho ukuthi akukho ukwelashwa kwamanzi angcolile okudingekayo. I-solid ammonium sulfate byproduct idayiswa kalula; i-ammonia sulfate iyingxenye kamanyolo nomanyolo osetshenziswa kakhulu emhlabeni, futhi ukukhula kwemakethe yomhlaba wonke kulindeleke ngo-2030. Ngaphezu kwalokho, ngenkathi ukukhiqizwa kwe-ammonium sulfate kudinga i-centrifuge, isomisi, into yokuthutha kanye nempahla yokupakisha, lezi zinto azinazo ezobunikazi futhi ziyathengiswa. etholakalayo. Ngokuya ngezimo zezomnotho nezemakethe, umanyolo we-ammonium sulfate unganciphisa izindleko ze-ammonia-based flue gas desulfurization futhi unikeze inzuzo enkulu.

Esebenza kahle Ammonia Desulfurization Process Schematic

I-Shandong Zhongpeng Special Ceramics Co., Ltd ingesinye sezixazululo ezintsha ze-silicon carbide zobumba eChina. I-ceramic yobuchwepheshe ye-SiC: Ubulukhuni be-Moh buyi-9 (ukuqina kwe-Moh entsha yi-13), enokumelana okuhle nokuguguleka nokugqwala, ukuhuzuka okuhle kakhulu – ukumelana ne-oxidation. Impilo yesevisi yomkhiqizo we-SiC iyinde izikhathi ezi-4 kuya kwezi-5 kune-alumina material engu-92%. I-MOR ye-RBSiC izikhathi ezi-5 kuye kweziyi-7 kune-SNBSC, ingasetshenziselwa izimo eziyinkimbinkimbi. Inqubo yekhotheshini iyashesha, ukulethwa kunjengoba kuthenjisiwe futhi ikhwalithi ingeyesibili. Sihlala siphikelela ekuphonseni inselelo imigomo yethu futhi sibuyisele izinhliziyo zethu emphakathini.