Umbhobho we-Denitrification: UkuKhetha i-alloy kunye neSikhokelo soMveliso sokuCasa 

Isishwankathelo: Esi sikhokelo sibandakanya ukhetho lwe-alloy, iinkqubo zokuphosa utyalo-mali, iziphene, i-CNC machining kunye neemfuno zokuhlolwa kwe-custom cast denitrification nozzles ezisetyenziswa kwi-SCR kunye ne-SNCR flue gas systems.

Imilomo ye-Denitrification zizinto zokunxiba ezibaluleke kakhulu ngaphakathi kwe-SCR kunye ne-SNCR flue gas denitration systems, ezivezwe kubushushu obuphezulu bebhayisekile, i-ammonia/urea corrosion kunye nokukhukuliseka kothuthu.

Esi sikhokelo sigxile kwimilomo ye-denitrification, ukugubungela iimeko eziqhelekileyo zokusebenza, uthelekiso lwebakala lengxubevange, ukuhamba komsebenzi wotyalo-mali, uthintelo lwesiphene kunye namanqaku okugqibela e-CNC okuphoswa kwemilomo yesiko.

Yintoni iCast Denitrification Nozzle kunye neNkonzo yeeMeko zayo

Umbhobho we-denitrification yinxalenye echanekileyo eyilelwe ukutofa i-urea okanye i-ammonia enciphisa ngokulinganayo kwimijelo yerhasi yomkhuhlane ukwenzela unyango lwe-denitration.

Ngokungafaniyo nemilomo yomatshini eyenziwe ngokuthe ngqo ukusuka kwisitokhwe sebha eqinileyo, imilomo ye-denitrification etyhidiweyo ixhasa imijelo entsonkothileyo yokuhamba kwangaphakathi, amazibuko okutshiza amaninzi kunye nezakhiwo ezixhomileyo ezidityanisiweyo ezinzima okanye ezixabisa kakhulu ukuvelisa ngomatshini oqinileyo wesitokhwe.

Indawo esebenza kuyo imilomo yokukhutshwa kwerhasi yeflue idala iindlela ezidityanisiweyo zokuthotywa ezinciphisa ubomi benkonzo:

• Utyhileko oluqhubekayo okanye oluguquguqukayo lobushushu obuphezulu ngaphakathi kwibhoyila kunye ne-ductwork;
• I-Chemical corrosion esuka kwi-ammonia, i-ammonium bisulfate kunye ne-acidic flue gas byproducts;
• Ukhukuliseko lwamasuntswana aqinileyo okubangwa luthuthu lwempukane oluthwalwa ngaphakathi kwerhasi yomlambo;
• Ukuphinda-phindwa kweebhayisekile ezishushu ezizisa uxinzelelo lokudinwa kwe-thermal kumacandelo anodonga olucekethekileyo kunye nokujikeleze imibhobho yomlomo.

Eli nqaku aliyi kuntywila nzulu kwi-SCR okanye kwi-SNCR ithiyori yokusabela kweekhemikhali.

Lonke ukhokelo apha lugxile kwizinto zokuphosa, umgangatho wokuvelisa kunye nokuhlolwa kokuziphosa komlomo.

UKhetho lweMathiriyeli ye-alloyi yokuCasa uMbhobho we-Denitrification

Ukukhetha izinto eziphathekayo sesona sigqibo sinefuthe kakhulu kubomi benkonzo yombhobho we-denitrification.

Kwinkonzo ye-denitration, ukuxhathisa ukukhukuliseka ngokuqhelekileyo kubekwe phambili, kulandelwa yi-high-temperature stability, ukumelana ne-corrosion kunye nohlahlo lwabiwo-mali lweprojekthi.

Ummandla we-orifice wokutshiza ocolekileyo yeyona ndawo ixhaphakileyo yokusilela kwimilomo yokuphosa.

Imigaqo yokukhetha i-denitration nozzle alloys

Xa uvavanya i-alloys yokuphosa imilomo ye-denitrification, thelekisa ibakala le-alloy kunye nemowudi enkulu yokusilela kwindawo yakho yegesi yoflue:

• Ukulayishwa kothuthu lwempukane enzima: beka phambili i-cobalt engagugiyo okanye i-alloys eqinileyo;
• I-ammonium bisulfate ephezulu kunye ne-acidic condensate ingozi: ukubeka phambili i-nickel-molybdenum-resistant-corrosion alloys;
• Izinzile, ubushushu obuphakathi obuphezulu kunye negesi ye-flue ecocekileyo: sebenzisa intsimbi enganyangekiyo yobushushu ekulawuleni iindleko.

Amanqanaba e-alloy yokuphosa aqhelekileyo kunye nemida yesicelo

Ibakala ngalinye le-alloy liphethe amandla acacileyo kunye nemida yokusetyenziswa kwegesi ye-flue:

• I-310S yokuphosa insimbi engenasici: ilungele ubushushu obuphakathi, igesi ecocekileyo ye-flue kunye noxinzelelo oluphantsi lothuthu; ukumelana nokhukuliseko olulinganiselweyo phantsi kwempembelelo yothuthu olunzima.
• I-Duplex 2205 / 2507: inika ukuxhathisa okulungileyo kwi-chloride kunye ne-acidic corrosion, kodwa inoluhlu olusezantsi lobushushu obuqhubekayo xa kuthelekiswa ne-nickel-based alloys ukumelana nobushushu.
• I-Hastelloy C276: ikhethwa xa i-ammonium bisulfate corrosion kunye ne-acidic flue gas yeyona nto iphambili yomngcipheko; iqhuba kakuhle kwiindawo ezinoburharha ezonakalisayo.
• I-Stellite 6 (i-cobalt alloy): ukumelana okugqwesileyo kukhukuliseko lwamasuntswana; ukhetho oluphezulu lweendawo ezinomxholo ophezulu wothuthu lwempukane, nangona luza kwimpahla yeprimiyamu kunye neendleko zomatshini.
• I-Inconel 625: ilungele iimeko zeplanti yamandla esebenza ngamalahle apho ubushushu obuphezulu, umhlwa kunye nokhukuliseko lothuthu lwempukane lusebenza kunye.

Itheyibhile yokuthelekisa imathiriyeli yemilomo ye-denitrification

Qaphela: Amaqondo obushushu abonisiwe bhekisa ku ubushushu benkonzo yexesha elide eqhubekayo kuphela. Amaqondo obushushu adlulayo angagqitha la maxabiso. Ngokubhekiselele ngokubanzi kuphela. Ukuqinisekiswa kwemathiriyeli yokugqibela kufuneka kuqinisekiswe ngedatha yokwakheka kwerhasi ephuma kwisiza sakho kunye nedathabheyi ye-alloy mill.

Inkqubo yokuSasa kuMalunga oMbhobho wokuDinitrification

Indlela yokuphosa ekhethwayo: Utyalo-mali olulahlwayo (ilahleko yokuphosa iwax)

Ukwenziwa kotyalo-mali, okwakwaziwa njengokuphoswa kwewax elahlekileyo, yeyona ndlela ibalaseleyo yokwenziwa komgangatho ophezulu wokusaswa kwemilomo ye-denitrification.

Le nkqubo ifaneleke kakuhle kula malungu ngenxa yezizathu ezininzi:

• Ivelisa kwakhona iipaseji ezintsonkothileyo zangaphakathi, iindonga ezibhityileyo kunye neempawu ezincinci zokutshiza ezichanekileyo ezinobume obuphezulu;
• Ivelisa indawo egudileyo njenge-cast, inciphisa inani lokususwa kwempahla efunekayo kwi-machining CNC kamva.

Ukugalelwa kwesanti ngokuqhelekileyo akukhuthazwa kwimilomo yokuchaneka echanekileyo eneepaseji zangaphakathi ezintsonkothileyo okanye ukunyamezela okubalulekileyo kokutshiza.

Inokuthi ithathelwe ingqalelo kuphela kwimilomo elula, ephantsi-umsebenzi ophantsi kunye neemfuneko zokusebenza ezikhululekile.

Ukugqiba komphezulu orhabaxa, umngcipheko ophezulu wokutshintsha okungundoqo kunye nobunzulu bangaphakathi obukufutshane neepaseji ezimxinwa zenza ukuba ukujulwa kwesanti kungathembeki kuninzi lwezicelo zokuxilonga.

Amanqaku okulawula umgangatho we-Foundry

Ulawulo lwenkqubo ye-Foundry lumisela ngokuthe ngqo ukuba ukuphoswa kombhobho kuya kusinda ekusebenzeni kwentsimi:

• Umoya onyibilikayo okhuselweyo ukuthintela i-oxidation kunye nelahleko yento ekunyibilikeni kwe-alloy ephezulu;
• Ukuhluzwa okufanelekileyo kwesinyithi esinyibilikisiweyo ukubambisa amaqhekeza e-slag ngaphambi kokuzalisa i-mold cavity;
• Uyilo oluqhelekileyo lokungena kunye noyilo lwesikhuphukeli oluyilelwe ngokukodwa ijometri yomlomo womlomo, ukujolisa iziphene zokushwabana kude nezitshizi;
• Ukukhetha iqokobhe lerefractory ehambelana ne-nickel esebenzayo kunye ne-cobalt alloy alloy iyanyibilika.

Iziphene ezibalulekileyo zokuphosa kunye nemingcipheko yokusilela kwimilomo ye-denitrification

Iziphene ezithile zokuphosa zidala imiba ethembekileyo yokuthembeka kwimibhobho ye-denitrification, nokuba inxalenye iphumelele uhlolo olusisiseko lokubonwayo:

• I-shrinkage porosity kufuphi ne-orifice yokutshiza: inokubangela ukungalingani kwe-atomization, ukuvuza kwangaphakathi kunye nokukhawuleza kokhukuliseko lwasekhaya;
• Ukufakwa kwe-Slag: kudala iindawo zokuqalisa zokusasazwa kokuqhekeka phantsi kwebhayisikile eshushu;
• Ukukrazula okutshisayo: kuhlala kwenzeka kwiinguqu zecandelo kunye neendonga zombhobho obhityileyo phantsi koxinzelelo oluphezulu lwe-alloy solidification;
• I-core shift: itshintsha indawo ye-orifice, i-angle yokutshiza kunye nokuhanjiswa kombhobho ogqityiweyo.

Amanyathelo okuthintela abandakanya ukulinganisa i-mold, amazinga okupholisa alawulwayo kunye noyilo lwenkxaso engundoqo ngexesha lokuhlanganiswa kwepatheni ye-wax.

UMatshini we-CNC, uHlolo kunye namanqaku okuVuma

I-Casting ihambisa imilo ekufutshane nenetha engenanto, kodwa iindawo ezibalulekileyo ezisebenzayo ze-denitrification nozzle zixhomekeke ngokuchanekileyo emva kokulungiswa.

Ukugxilwa komatshini we-nozzle orifice kunye neendawo zokutywina

I-orifice yokutshiza ibhore, ubuso bokutywina, imidibaniso enemisonto kunye nojongano olunyukayo lufuna ukunyamezelana okungqongqo kwe-CNC machining.

Ijiyometri yokugqibela ephuma emlonyeni ilawula ngokuthe ngqo i-engile yokutshiza, ubungakanani bethontsi kunye nesantya sokuhamba.

I-nickel-based kunye ne-cobalt-based alloys kunzima ukwenza umatshini.

Iivenkile ezivelisa imilomo ye-denitrification kufuneka zikhethe izixhobo ezifanelekileyo, iiparamitha zokusika kunye nezicwangciso zokupholisa ukunqanda ukuqina komsebenzi, ukukrazuka komphezulu kunye nokukhukuliseka komphezulu.

I-NDT enyanzelekileyo kunye neemvavanyo zokwamkelwa

Ukuhlolwa okusemgangathweni kolwamkelo lokuphoswa komlomo wombhobho we-denitrification ngokuqhelekileyo kubandakanya:

• Uvavanyo lokungena kwe-PT ukufumanisa ukuqhekeka komphezulu, iinyembezi ezishushu kunye ne-porosity evezwayo;
• Ukuhlolwa kwe-Ultrasonic ye-subsurface shrinkage okanye ukufakwa kumacandelo ashinyeneyo;
• Uvavanyo lokuvuza kweHydrostatic ukuqinisekisa ukuba imijelo yangaphakathi ayinakuvuza;
• Ukuhlolwa kobukhulu be-CMM ukuqinisekisa ubungakanani bendawo engaphakathi, i-engile yokutshiza kunye nemilinganiselo yokunyuka ihambelana nemizobo.

Iinketho emva konyango

I-passivation idla ngokusetyenziswa kwintsimbi engatyiwa kunye nemilomo ye-nickel alloy ukuze kuphuculwe ukuxhathisa komhlwa.

Ukuzinzisa unyango lobushushu kunokuchazwa ukunciphisa intsalela yoxinzelelo lokuphosa phambi kofakelo.

I-Hardface inokuthi ithathelwe ingqalelo ukhuseleko olongezelelweyo lokunxiba kwiindawo zokukhukuliseka kothuthu olugqithisileyo.

Iimeko zeSicelo esiQhelekileyo seMibhobho ye-Cast Denitrification

Imilomo ye-Cast denitrification isasazwe ngokubanzi kuzo zonke iindawo zokunyanga irhasi emileyo:

• Iziko lombane elibaselwe ngamalahle iSCR kunye ne-SNCR iinkqubo zokuchasa;
• iiyunithi zokunqanda igesi yesamente;
• Inkunkuma-kuya-eneji kunye neebhoyila zokutsha zebiomass;
• Iziko loShishino kunye neeprojekthi zokunyanga igesi etshisiweyo.

Ungafumana imilomo yethu ye-denitrification yesiko kwiphepha lethu lemveliso elizinikeleyo.

Ukufumana imvelaphi ethe kratya kwimveliso yecandelo elifanayo, unokuphonononga isikhokelo sethu sobushushu obuphezulu be-alloy castings.

FAQ

Ndingasebenzisa imilomo esemgangathweni ye-316L yokuphoswa kwe-denitrification enzima?

Ngokuqhelekileyo akukho. I-316L inamandla asezantsi obushushu obuphezulu kunye nokumelana okungalunganga kwe-ammonium bisulfate kunye nokukhukuliseka kothuthu.

Ayifanelekanga phantse kuzo zonke iimeko-bume zokukhanyela umsebenzi onzima. Inokwamkeleka kuphela kwiqondo lobushushu eliphantsi kakhulu, igesi ecocekileyo ecocekileyo nengabalulekanga kakhulu.

Ngaba utyalo-mali luhlala lufuneka kwimilomo ye-denitrification?

Kwimilomo yesiko eneepaseji ezintsonkothileyo zangaphakathi okanye uyilo lwesitshizi sezibuko ezininzi, utyalo-mali lukhethwa ngamandla.

Imilomo ye-orifice elula ngamanye amaxesha inokwenziwa ngoomatshini ukusuka kwisitokhwe sebha, kodwa oko kuwela ngaphandle komda wesi sikhokelo sokuphosa.

Yeyiphi eyona modi yokungaphumeleli rhoqo kokuphoswa kwemilomo ye-denitrification?

Ukhukuliseko lwasekhaya lwe-orifice edge yesitshizi, elandelwa kukuqhekeka kwe-corrosion-fatigue eqala ukusuka kwi-porosity yokuphosa efihliweyo okanye iziphene zokubandakanywa.

Ngaba imilomo yengxubevange ye-stellite inokulungiswa emva kokhukuliseko?

Umonakalo omncinci wokhukuliseko ngamanye amaxesha unokulungiswa ngokulungiswa kwe-hardfacing, kodwa ukulungiswa okunokwenzeka kuxhomekeke kubuninzi bodonga oluseleyo kunye nendawo yokunxiba.

Imilomo ekhukuliswe kakhulu okanye eqhekekileyo idla ngokufuna ukutshintshwa.