Silicon Carbide FGD Nozzle yo gusohora amashanyarazi mumashanyarazi

Umuyoboro wa gaz uhumeka (FGD) Absorber Nozzles
Kurandura okiside ya sulfure, bakunze kwita SOx, mu myuka isohoka ikoresheje reagent ya alkali, nk'urusenda rutose.

Iyo ibicanwa bya fosile bikoreshwa mugikorwa cyo gutwika kugirango bikoreshe ibyuka, itanura, cyangwa ibindi bikoresho bafite ubushobozi bwo kurekura SO2 cyangwa SO3 mubice bya gaze ya gaze. Iyi okiside ya sulfure ikora byoroshye nibindi bintu kugirango ibe ibintu byangiza nka acide sulfurike kandi bifite ubushobozi bwo kugira ingaruka mbi kubuzima bwabantu no kubidukikije. Kubera izo ngaruka zishobora kubaho, kugenzura iyi compound mu myuka ya flue ni igice cyingenzi cy’amashanyarazi y’amakara hamwe n’ibindi bikoreshwa mu nganda.

Bitewe n'isuri, gucomeka, no kwiyubaka, bumwe muri sisitemu yizewe yo kugenzura ibyo byuka ni uburyo bwo gufungura umunara wuzuye amazi ya gaz desulfurizasi (FGD) ukoresheje hekeste, lime hydrated, amazi yo mu nyanja, cyangwa ikindi gisubizo cya alkaline. Gusasira nozzles birashobora gukwirakwiza neza kandi byizewe gukwirakwiza ibishishwa muminara yo kwinjiza. Mugukora igishushanyo kimwe cyibitonyanga bifite ubunini buke, utwo dusimba turashobora gukora neza ubuso bukenewe kugirango bwinjizwe neza mugihe hagabanijwe kwinjiza igisubizo cya gaze ya gaze.

Guhitamo FGD Absorber Nozzle:
Ibintu by'ingenzi ugomba gusuzuma:

Gucukumbura itangazamakuru ubwinshi nubwiza
Ingano yigitonyanga gisabwa
Ingano nziza yigitonyanga ningirakamaro kugirango igenzure neza
Ibikoresho bya Nozzle
Nkuko gaze ya flue ikunze kwangirika kandi amazi ya scrubbing akenshi ni akajagari karimo ibintu byinshi kandi bifite imiti igabanya ubukana, guhitamo ruswa ikwiye no kwambara ibikoresho birwanya imbaraga ni ngombwa
Nozzle clog resistance
Nkuko amazi ya scrubbing arikintu cyinshi kirimo ibintu byinshi, guhitamo nozzle kubijyanye no kurwanya clog ni ngombwa
Nozzle spray icyitegererezo no gushyira
Kugirango habeho kwinjiza neza gukwirakwiza gazi nta bypass kandi umwanya uhagije wo gutura ni ngombwa
Ingano ya Nozzle ingano nubwoko
Ibisabwa bya scrubbing ibipimo byamazi
Kugabanuka k'umuvuduko (∆P) kuruhande rwa nozzle
∆P = gutanga igitutu kuri nozzle inlet - igitutu cyo gutunganya hanze ya nozzle
Ba injeniyeri bacu b'inararibonye barashobora gufasha kumenya nozzle izakora nkuko bisabwa hamwe nibisobanuro byawe
Ibisanzwe FGD Absorber Nozzle Ikoreshwa ninganda:
Amakara hamwe n’ibindi bikoresho bitanga ingufu za peteroli
Uruganda rutunganya peteroli
Gutwika imyanda ya komine
Amatanura ya sima
Uruganda rukora ibyuma

Urupapuro rwibikoresho bya SiC

Ingaruka hamwe na Lime / Limestone

Nkuko bigaragara ku gishushanyo cya 1, sisitemu ya FGD ikoresha lime / limestone ku gahato okiside (LSFO) ikubiyemo sisitemu eshatu zingenzi:

• Gutegura neza, gutunganya no kubika
• Ubwato bwa Absorber
• Gukoresha imyanda no kubyara umusaruro

Gutegura neza bigizwe no kugeza hekeste yamenetse (CaCO3) kuva muri silo yabitswe kugeza ikigega cyibiryo. Amabuye ya hekeste yavuyemo noneho ashyirwa mu cyombo gikurura hamwe na gaze ya gaz ya gaz hamwe na okiside. Gusasa nozzles bitanga ibitonyanga byiza bya reagent hanyuma bigahita bihura na gaze ya flue yinjira. SO2 muri gaze ya flue ikora hamwe na reagent ikungahaye kuri calcium ikora calcium sulfite (CaSO3) na CO2. Umwuka winjiye mumashanyarazi utera okiside ya CaSO3 kugeza kuri CaSO4 (form ya dihydrate).

Ibanze shingiro rya LSFO ni:

CaCO3 + SO2 → CaSO3 + CO2 · 2H2O

Okiside ya okiside ikusanyiriza hepfo yikuramo hanyuma igasubirwamo hamwe na reagent nshya igasubira kumutwe wa spray nozzle. Igice cyumugezi wa recycle gisubizwa muri sisitemu yo gutunganya imyanda / byproduct, ubusanzwe igizwe na hydrocyclone, ingoma cyangwa akayunguruzo, hamwe n’amazi yanduye / ikigega gifata inzoga. Amazi mabi ava mu kigega gifata asubirwamo agasubira mu kigega cyo kugaburira hekeste cyangwa kuri hydrocyclone aho amazi arengerwa akurwaho.

Ubusanzwe Lime / Limestone Guhatira Oxidatin Gutose Gutunganya Gahunda

Sisitemu ya LSFO itose mubisanzwe irashobora kugera kuri SO2 yo gukuraho 95-97%. Kugera ku kigero kiri hejuru ya 97.5 ku ijana kugirango byuzuze ibisabwa byo kugenzura ibyuka bihumanya ikirere, ariko, biragoye cyane cyane ku bimera bikoresha amakara menshi ya sulfuru. Cataliseri ya magnesium irashobora kongerwamo cyangwa hekeste irashobora kubarwa kugeza hejuru ya lime (CaO), ariko ibyo bihinduka birimo ibikoresho byinganda byiyongera hamwe nigiciro cyakazi hamwe nigiciro cyamashanyarazi. Kurugero, kubara kuri lime bisaba kwishyiriraho itanura ryihariye. Na none, lime iragwa byoroshye kandi ibi byongera ubushobozi bwo kubitsa igipimo kinini muri scrubber.

Igiciro cyo kubara hamwe nitanura rya lime kirashobora kugabanuka mugutera inshinge mu itanura. Muri ubu buryo, lime ikorwa muri boiler itwarwa na gaz ya flue muri scrubber. Ibibazo bishoboka harimo gutekesha ibyuka, kubangamira ihererekanyabubasha, hamwe no kudakora lime kubera gutwika cyane. Byongeye kandi, lime igabanya ubushyuhe bwimivu yivu yashongeshejwe mumashyiga yaka amakara, bikavamo ububiko bukomeye butari kubaho.

Imyanda y’amazi ituruka muri gahunda ya LSFO isanzwe yerekeza ku byuzi byo gutuza hamwe n’imyanda ituruka ahandi mu rugomero rw’amashanyarazi. Amazi meza ya FGD yuzuye ashobora kuzuzwa na sulfite na sulfate hamwe nibidukikije bikunze kugabanya kurekurwa kwinzuzi, imigezi cyangwa andi masoko y'amazi. Nanone, gutunganya amazi mabi / inzoga gusubira muri scrubber birashobora gutuma habaho kwiyongera kwa sodium, potasiyumu, calcium, magnesium cyangwa umunyu wa chloride. Ubu bwoko burashobora gutondeka keretse hatanzwe amaraso ahagije kugirango umunyu ushonga munsi yuzuye. Ikibazo cyinyongera nigipimo cyo gutinda kwimyanda yimyanda, bivamo gukenera ibyuzi binini, binini cyane. Mubihe bisanzwe, urwego rwatuye mucyuzi gihamye gishobora kuba kirimo 50 ku ijana cyangwa kirenga icyiciro cyamazi nubwo nyuma y amezi menshi yabitswe.

Kalisiyumu sulfate yagaruwe muri sisitemu ya recycle slurry irashobora kuba mwinshi mumasemburo adakorewe hamwe na calcium sulfite ivu. Ibyo bihumanya birashobora kubuza calcium sulfate kugurishwa nka gypsumu ya sintetike kugirango ikoreshwe mu rukuta, plaster, na sima. Amabuye adakorewe ni umwanda wiganje uboneka muri gypsumu yubukorikori kandi ni umwanda usanzwe muri gypsumu karemano (yacukuwe). Mugihe hekeste ubwayo itabangamira imiterere yibicuruzwa byanyuma, imitekerereze yayo yerekana ibibazo byo kwambara kubikoresho byo gutunganya. Kalisiyumu sulfite ni umwanda udakenewe muri gypsumu iyo ari yo yose kuko ubunini bwayo bwiza butera ibibazo byo gupima nibindi bibazo byo gutunganya nko gukaraba cake no kuvomera.

Niba ibibyimba byakozwe mubikorwa bya LSFO bidashobora kugurishwa mubucuruzi nka gypsumu yubukorikori, ibi bitera ikibazo kinini cyo guta imyanda. Kumashanyarazi ya MW 1000 irasa 1 ku ijana yamakara ya sulfuru, ingano ya gypsumu igera kuri toni 550 (ngufi) / kumunsi. Ku gihingwa kimwe kirasa amakara ya sulfure 2 ku ijana, umusaruro wa gypsumu wiyongera kugera kuri toni 1100 / kumunsi. Wongeyeho toni zigera ku 1000 / kumunsi kugirango zivemo ivu, ibi bizana imyanda yose yuzuye toni igera kuri toni 1550 / kumunsi kubibazo bya 1% byamakara ya sulfuru na toni 2100 / kumunsi kubibazo bya sulferi 2%.

Ibyiza bya EADS

Ikoranabuhanga ryerekanwe ubundi buryo bwa LSFO scrubbing risimbuza hekeste na ammonia nka reagent yo gukuraho SO2. Urusyo rukomeye rwa reagent, kubika, gutunganya no gutwara ibintu muri sisitemu ya LSFO bisimburwa n'ibigega byoroshye byo kubika amazi ya amoniya y'amazi cyangwa anhydrous. Igishushanyo cya 2 cyerekana igishushanyo mbonera cya sisitemu ya EADS yatanzwe na JET Inc.

Amoniya, gaze ya flue, okiside umwuka hamwe nogutunganya amazi yinjira mumashanyarazi arimo urwego rwinshi rwa spray nozzles. Urusenda rutanga ibitonyanga byiza bya amoniya irimo reagent kugirango habeho guhuza byimazeyo na reagent hamwe na gaze ya flue yinjira ukurikije ibi bikurikira:

(1) SO2 + 2NH3 + H2O → (NH4) 2SO3

(2) (NH4) 2SO3 + ½O2 → (NH4) 2SO4

SO2 mumigezi ya flue ikora hamwe na ammonia mugice cyo hejuru cyubwato kugirango itange ammonium sulfite. Hasi yubwato bwikurura bukora nka tank ya okiside aho umwuka uhumeka ammonium sulfite kuri sulfate ya amonium. Ibisubizo bivamo ammonium sulfate bisubizwa inyuma kumutwe wa spray nozzle kurwego rwinshi mumashanyarazi. Mbere ya gaze ya flue isukuye isohoka hejuru yikuramo, inyura muri demistre ihuza ibitonyanga byose byamazi kandi bigafata uduce duto duto.

Ammonia reaction hamwe na SO2 hamwe na sulfite okiside ya sulfate igera ku gipimo kinini cyo gukoresha. Ibiro bine bya ammonium sulfate bikorerwa kuri buri pound ya amoniya yakoreshejwe.

Kimwe na LSFO inzira, igice cyumubyigano wa reagent / ibicuruzwa birashobora gukururwa kugirango bitange ibicuruzwa byubucuruzi. Muri sisitemu ya EADS, igisubizo cyibicuruzwa byafashwe bisubizwa muri sisitemu yo kugarura ibintu bigizwe na hydrocyclone na centrifuge kugirango yibande ku bicuruzwa bya ammonium sulfate mbere yo gukama no gupakira. Amazi yose (hydrocyclone overflow na centrifuge centrate) asubizwa mumatara mabi hanyuma akongera kwinjizwa mumashanyarazi ya amonium sulfate.

• Sisitemu ya EADS itanga uburyo bwiza bwo gukuraho SO2 (> 99%), butanga amashanyarazi akoreshwa namakara byoroshye guhuza amakara ahendutse, menshi ya sulfuru.
• Mugihe sisitemu ya LSFO ikora toni 0.7 za CO2 kuri buri toni ya SO2 yakuweho, inzira ya EADS nta CO2 itanga.
• Kubera ko lime na hekeste bidakorwa neza ugereranije na ammonia yo gukuraho SO2, hasabwa gukoresha amazi menshi hamwe ningufu zo kuvoma birasabwa kugirango umuvuduko ukabije. Ibi bivamo amafaranga menshi yo gukora kuri sisitemu ya LSFO.
• Amafaranga yatanzwe kuri sisitemu ya EADS asa nayubaka sisitemu ya LSFO. Nkuko byavuzwe haruguru, mugihe sisitemu ya EADS isaba amonium sulfate yumusaruro wibikoresho byo gutunganya no gupakira, ibikoresho byo gutegura reagent bijyana na LSFO ntibisabwa gusya, gutunganya no gutwara.

Inyungu yihariye ya EADS ni ugukuraho imyanda yombi kandi ikomeye. Ikoranabuhanga rya EADS ni inzira ya zeru-yamazi-yo gusohora, bivuze ko nta gutunganya amazi mabi asabwa. Ammonium sulfate ikomeye byproduct iroroshye kugurishwa; ammonia sulfate ni ifumbire mvaruganda n’ifumbire ikoreshwa cyane ku isi, aho biteganijwe ko izamuka ry’isoko ku isi riteganijwe kugeza mu 2030. Byongeye kandi, mu gihe gukora sulfate ya ammonium bisaba centrifuge, yumisha, ibikoresho byo gupakira hamwe n’ibikoresho byo gupakira, ibyo bintu ntabwo ari ibya nyirabyo kandi biboneka mu bucuruzi. Ukurikije uko ubukungu bwifashe ndetse n’isoko, ifumbire ya sulfate ya ammonium irashobora kugabanya ikiguzi cyo gukwirakwiza amashyanyarazi ashingiye kuri amoniya kandi ishobora gutanga inyungu nini.

Uburyo bwiza bwa Ammonia Desulfurisation Gahunda

Shandong Zhongpeng Special Ceramics Co., Ltd nimwe mubisubizo binini bya silicon karbide ceramic ibisubizo bishya mubushinwa. Ceramic tekinike ya SiC: Gukomera kwa Moh ni 9 (Gukomera kwa Moh ni 13), hamwe no kurwanya isuri no kwangirika, kwangirika kwiza - kurwanya no kurwanya okiside. Ubuzima bwa serivisi ya SiC ni inshuro 4 kugeza kuri 5 kurenza 92% bya alumina. MOR ya RBSiC yikubye inshuro 5 kugeza kuri 7 za SNBSC, irashobora gukoreshwa muburyo bukomeye. Igikorwa cyo gusubiramo cyihuta, gutanga ni nkuko byasezeranijwe kandi ubuziranenge ni ubwa kabiri kuri kimwe. Buri gihe dukomeza gutsimbarara ku ntego zacu no gusubiza imitima yacu muri sosiyete.