Xa usiva 'i-denitrification nozzle', abantu abaninzi ngokukhawuleza bafanekisela intloko elula yokutshiza, mhlawumbi ijethi entle. Leyo yimbono yokuqala ephosakeleyo. Kwiinkqubo ze-SCR, akukhona nje ngokutshiza i-urea; imalunga nokudala i-spectrum ye-droplet echanekileyo, ukusabalalisa, kunye nokungena kubushushu obuphezulu, umjelo wegesi ye-flue enesantya esiphezulu. Yifumane kakubi, kwaye ujonge isiliphu se-ammonia, ukuhlambalaza, okanye ukuphendula okungaphelelanga. Ndikhe ndabona izityalo zichitha intywenka yemali kwii-catalysts kuphela ukuba umsebenzi uqhwaleliswe yindibano yenaliti eyilwe kakubi okanye eyenziweyo. Umbhobho lujongano olubalulekileyo phakathi kwe-arhente yokunciphisa kunye nenkqubo, kwaye ukuthembeka kwayo kudla ngokuxhomekeke kwi-Foundry kunye ne-machining emva kwayo.
Ucelomngeni olungundoqo: Izinto eziphathekayo kunye nejometri phantsi komlilo
Masithethe ngemekobume. Ngokuqhelekileyo sijongana namaqondo obushushu anokuthi ajinge, kunye nomxube obolileyo wezinto eziphuma kwi-ammonia kunye nothuthu olubhabhayo. Umgangatho we-316 ongenastained unokuwusika okwexeshana kwezinye iimeko, kodwa kucwangciso oluqina ngakumbi, ngakumbi ngothuli oluphezulu okanye iincopho zamaqondo obushushu, ubona ukhukuliseko olukhawulezileyo okanye ukubola koxinzelelo lokuqhekeka kwi-orifice. Kulapho ukhetho lwezinto eziphathekayo luba yinyani. Ayikokukhetha nje kwikhathalogu; imalunga nokuqonda ukwakheka kwerhasi ethile. Ndikhumbula iprojekthi yesityalo senkunkuma-to-energy apho imilomo yokuqala, eyenziwe kwi-austenitic eqhelekileyo, iphuhlise i-micro-cracks kwiinyanga. Ukusilela akubanga ngamandla; ibikukwanda kancinci kancinci kwi-slip kunye nokuhanjiswa okungalinganiyo okuthathe ixesha ukuxilonga ukubuyela kwisixhobo somlomo ngokwawo.
Kulapho iinkampani ezinamava ezinto ezinzulu zibaluleka kakhulu. Ndicinga ngomthengisi onje Qingdao Qiangsenyuan Technology Co., Ltd. (QSY). Ngamashumi amathathu eminyaka ekusasazeni nasematshinini, ayingobathathi-odolo nje. Imvelaphi yabo kwi-shell mold kunye ne-investment casting kwii-alloys ezikhethekileyo ezifana ne-nickel-based kunye ne-cobalt-based zihambelana ngokuthe ngqo. Ngombhobho we-denitrification, umzimba we-Inconel 625 wotyalo-mali unokunikela ngobomi obuhlukeneyo obuhlukeneyo xa kuthelekiswa nesiqwenga somatshini ukusuka kwisitokhwe esiqhelekileyo sebha, ngakumbi malunga nokwakheka kweenkozo kunye nokumelana nobushushu. Umahluko kwiinkcukacha zenkqubo.
Ijometri lelinye irhamncwa. Indlela yokuqukuqela yangaphakathi, i-engile yesitshizi, i-orifice finish—ayiyomilinganiselo ye-CAD nje kuphela. Ukuphambuka okuncinci kwi-taper ekhokelela kwi-orifice kunokubangela i-cavitation, ukuthotywa kwe-nozzle kunye nokuphazamisa ipateni yokutshiza. Ukunyamezelana ngomatshini yinkosi. Ifuna isakhono se-CNC esichanekileyo, kodwa kwakhona ukuqonda ukuba le nxalenye ayilogqatso; ifuna ukuchaneka apho ibala khona (i-orifice, isihlalo) kunye nokomelela kwenye indawo. Ndineeprototypes ezijongeka zigqibelele kumzobo kodwa, xa zivavanywa kwibhentshi yokuhamba ebandayo, zabonisa isitshizi se-asymmetric. Umoni? Uphawu oluphantse lungabonakali lwesixhobo ngaphakathi kumjelo wesondlo ophazamise ukuhamba kwe-laminar. Kuthathe iseshoni kunye neqela lomatshini ukulungisa indlela yesixhobo kunye nokugqiba ulandelelwano.
Ukusuka kwi-Drawing ukuya kwi-Duct: I-Integration Headache
Kwanomlomo owenziwe ngokugqibeleleyo ulungile nje ngokufakela kwayo. I-flange yokunyuka, ukunyuka kwe-thermal ukungahambisani nodonga lwe-duct, ukutywinwa-ezi ziyinyani zentsimi. Olunye ulongamo oluqhelekileyo alubaleli ngokukhula ngokushushu kwejuba okanye ukuphindaphindeka. Ufakelo oluqinileyo lunokubangela uxinzelelo olukhulu kumzimba we-nozzle, ukukrazula i-welds okanye ukuphazamisa ukulungelelaniswa. Oku sikufunde kabuhlungu kwi-retrofit kwangethuba. Imilomo yayilungile, kodwa izibiyeli zenkxaso eziqinileyo esiziyileyo azizange zivumele ukuhamba kombhobho ngexesha lemijikelo yobushushu. Isiphumo: iinwele ziyaqhekeka kwiintamo ze-weld emva kokuqalisa okumbalwa. Ulungiso yayilutshintsho olulula kodwa olubalulekileyo kuyilo lwenkxaso edadayo.
Enye ingcaciso esebenzayo kukufikelela. Kumbhobho oxineneyo, uwuhlola njani okanye uwutshintshe njani umlomo? Uqhagamshelo olukhawulezayo lokuqhawula unxibelelwano luvakala lukhulu kwithiyori, kodwa zongeza iindawo ezivuzayo ezinokubakho kwaye zinokuba nkulu. Ngamanye amaxesha uxhulumaniso olulula olunentambo kunye ne-high-temperature sealant yokushisa kunokwethenjelwa ngakumbi, ukuba uyila indawo ye-wrench. Ndikhetha uyilo oluvumela ukususwa ngaphandle kombhobho ngaphandle kokuvala icandelo lonke, kodwa oko akusoloko kusenzeka. Lurhwebo phakathi kokugcinwa lula kunye nobunzima benkqubo.
Emva koko kukho umbuzo we-atomization media. Incedwa ngumoya okanye ihydraulic? Kwiinkqubo ezincinci okanye apho umoya oxiniweyo ufumaneka lula, uncedo lomoya lunokunika i-atomization ephucukileyo. Kodwa wongeza enye inkqubo-imigca yomoya, izihluzi, abalawuli. Kwizityalo zamandla amakhulu, i-hydraulic (usebenzisa isisombululo se-urea yoxinzelelo oluphezulu ngokwayo) ihlala ilula. Ukhetho luchaphazela ngqo uyilo lwangaphakathi lombhobho. Umbhobho oncediswa ngumoya unejiyometri yangaphakathi eyahlukileyo ngokupheleleyo yokuxuba ulwelo olubini. Awunakutshintsha nje uhlobo olunye kolunye ngaphandle kokwenza kwakhona igridi yokutofa.
I-Case in Point: I-Alloy Shift
Umzekelo obambekayo othe nca kum ubandakanya ukuphuculwa kwebhoyila yamalahle. Eyokuqala imilomo ye-denitrification ibingumgangatho we-310S ongenabala. Ukusebenza bekulungile, kodwa amaxesha olondolozo abemafutshane kunoko ebefunwa ngenxa yokhukuliseko lwencam. Umxhasi wayefuna ukwandisa ixesha lokuqhuba. Sijonge idatha: iqondo lokushisa kwindawo yokutofa yayihlala ihleli kumda ophezulu we-310S, kwaye i-fly ash yayinobunzima obuphakathi.
Sisebenze kunye ne-Foundry-QSY ifika engqondweni njengoko bephatha olu tshintsho-ukwenza i-prototype iseti ye-nozzles usebenzisa i-nickel-based alloy ngokuphosa utyalo-mali. Injongo yayingekokutshintsha nje izinto; sithathe ithuba lokudibanisa i-geometry yangaphakathi esekelwe kwi-flow simulation ukunciphisa imimandla ephantsi yoxinzelelo apho i-cavitation ingaqala khona. I-post-casting yomatshini yayibalulekile ukugcina ukugqitywa komphezulu kumjelo we-capillary feed.
Isiphumo asizange sibe kukutsiba okungummangaliso, kodwa ukuphuculwa okuqinileyo, okuthembekileyo. Imilomo emitsha ibonise ukunxitywa okungahoywanga emva kwexesha ekudala ifuna ukujongwa. I-ROI yayiphantsi kwexesha elincitshisiweyo kunye nomngcipheko ophantsi wokungaphumeleli okungacwangciswanga. Into ephambili yayiyindlela edibeneyo: isayensi yezinto eziphathekayo (ukukhetha i-alloy efanelekileyo yendawo ethile), ukuveliswa okuchanekileyo (ukuqonda injongo yoyilo), kunye nolwazi olusebenzayo lokufakela. Ungafumana ababoneleli abafumana nje iinxalenye zoomatshini, kodwa kumacandelo aphantsi kolu hlobo loxinzelelo lwe-thermal kunye neekhemikhali, i-Foundry pedigree ibalulekile. Amava exesha elide enkampani ekukhupheni i-alloys esebenza kakhulu, njengaleyo iphawulweyo https://www.tsingtaocnc.com, ihlala iguqulela kwiingcebiso ezingcono malunga nokuziphatha okubonakalayo kunye nokuba nokwenzeka kokwenziwa kwezi ndawo zibalulekileyo.
Ngaphaya koMlomo: Ukucinga kweNkqubo
Kuyahenda ukugxila kumbhobho njengenxalenye yokuzimela, kodwa akunamsebenzi ngaphandle kokuqwalasela yonke igridi yesitofu. Isithuba, i-angle ehambelana nokuhamba kwegesi, umgama ukuya kwi-catalyst face-ezi pharamitha zilawula ukuxuba kokuqala. Umbhobho omangalisayo kwindawo engafanelekanga yinkunkuma. Sihlala sisebenzisa imodeli yeCFD njengesikhokelo, kodwa akukho nto ithatha indawo yokulungisa intsimi ngexesha lokugunyazisa. Ulungelelanisa amazinga okuhamba kunye noxinzelelo ngelixa ulinganisa ukuhanjiswa kwe-ammonia kwindawo yokungena kwi-catalyst. Ngamanye amaxesha, ufumanisa ukuba uhlengahlengiso oluncinci lokuhamba kombhobho omnye lunesiphumo sokwehla kulwabiwo lulonke.
Apha kulapho ukumodareyitha kuyilo oluphindaphindeneyo lombhobho kunceda khona. Ukuba umlomo ngamnye ukwilayini yokutya ehlengahlengiswayo (ngaphakathi kwesizathu), inika iinjineli zentsimi isixhobo esinamandla sokuphucula. Ndibone iinkqubo apho zivale yonke into phantsi ngokungqongqo ukugcina iindleko zofakelo, kuphela ukuchitha amatyeli alishumi ngakumbi emva koko ukuzama ukulungisa imiba yokusasaza ngohlengahlengiso lwe-catalyst layer okanye ngokubaleka ngaphezulu kwe-ammonia-to-NOx eyimfuneko ratios.
Okokugqibela, musa ukuyihoya into eqhelekileyo: ukuhluza. Isisombululo se-urea, nokuba sikwibakala eliphakamileyo, sinokuba neenxalenye okanye zikhazimle. Intwana yobutyobo inokuthintela umbhobho ophuma emlonyeni. I-robust, i-multi-stage filtration upstream ye-injection grid ayinakuxoxisana. Yipolisi ye-inshorensi ephantsi kwayo yonke inkqubo ye-SCR. Dibanisa loo nto kunye nombhobho owenziwe kakuhle onokukwazi ukuzicoca (njengendlela ethile yangaphakathi ephazamisa ukwakhiwa kwediphozithi), kwaye uphakamisa kakhulu ukuthembeka kokusebenza.
Ukuyisonga: Icandelo lesiphumo
Ngoko ke, i denitrification umlomo. Licandelo elincinci elinoxanduva olukhulu. Ukuyichaza kufuna ukuhamba ngaphaya kwesixhobo esilula kunye ne-angle yokutshiza yokufowuna. Ifuna incoko malunga nemvulophu yokusebenza yokwenyani, amafutha, ukulayishwa kothuli, izixhobo ezifumanekayo ze-atomization, kunye nefilosofi yolondolozo. Ukukhetha iqabane lokwenziwa kwemveliso kubaluleke ngokulinganayo-ufuna umntu oqondayo zombini i-metallurgy ukuqina kunye nokuchaneka kwe-machining yokusebenza.
Kulo mmandla, ukusilela kunqabile ukuba kubekho ugqabhuko-dubulo oluyintlekele; batshisa ngokukhawuleza ukungasebenzi-ukusetyenziswa kwe-ammonia okongeziweyo, i-catalyst poisoning, imiba yokunciphisa uxinzelelo. Babiza imali yonke imihla. Ukufumana inaliti ngokufanelekileyo, ukuqala ngombhobho oqinileyo, owenziwe kakuhle, ubeka isiseko sayo yonke impendulo ye-SCR. Lelinye lala macandelo apho utyalo-mali lwangaphambili kuyilo olululo kunye noveliso olusemgangathweni lubuyisela ngokuzolileyo kodwa ngokungaguqukiyo kwiminyaka yokusebenza. Uyeka ukucinga ngayo, kwaye yeyona nto ingcono yokuncoma isixhobo senkqubo esinokuyifumana.
Xa sijonga emva, iiprojekthi eziqhube kakuhle kakhulu zezona apho sasiyiphatha inkqubo yokutofa hayi njengokuthengwa kwempahla yorhwebo, kodwa njengenkqubo ephantsi edibeneyo. Oko kwakuthetha ukubandakanya ababoneleli ngobunzulu besicelo kunye nobunzulu bokwenziwa kwangethuba kwisigaba soyilo, hayi ukuthumela nje imizobo egqityiweyo ukucaphula. Kwenze umahluko omkhulu.
