Cov khoom siv thee zeb xaiv 1: qis-ceev thee zeb

Tus neeg sawv cev ntawm lub tshuab hluav taws xob qis qis yog lub pob zeb.Lub hauv paus ntsiab lus ntawm kev ua haujlwm yog: lub tshuab hluav taws xob muaj zog los ntawm lub gearbox los tsav lub pob hlau hnyav no, lub pob steel hauv qhov yooj yim yog tig mus rau qhov siab thiab tom qab ntawd poob qis, los ntawm kev cuam tshuam ntawm lub pob steel ntawm cov thee thiab nruab nrab. lub pob steel, nruab nrab ntawm lub pob steel thiab cov phaj tiv thaiv, cov thee yog hauv av.Cov coarse tsis tsim nyog tshaj yog sib cais thaum nws ntws los ntawm cov hmoov coarse separator nyob rau sab nraum qab ntawm lub pob zeb, thiab ces xa mus rau lub voj voog phaj los ntawm cov hmoov xa rov qab mus rau rov sib tsoo.Ntxiv nrog rau kev thauj cov hmoov av, cov cua kub kuj tseem ua lub luag haujlwm ntawm kev ziab thee.Yog li ntawd, huab cua kub kuj hu ua desiccant nyob rau hauv cov hmoov system.Cov khoom lag luam muaj cov yam ntxwv ntawm lub sijhawm ua haujlwm ntev, kev saib xyuas yooj yim, ruaj khov thiab ua haujlwm zoo, muaj peev xwm cia loj, cov lus teb ceev ceev, kev ua haujlwm loj, tsis tshua muaj huab cua-coal piv, txuag hluav taws xob thee tshuab, ntau yam sib tsoo thee thiab lwm yam.Nws yog tsuas yog siv rau hardness thiab medium-hardness thee, tshwj xeeb tshaj yog rau cov thee nrog siab volatile cov ntsiab lus thiab muaj zog abrasive khoom.Txawm li cas los xij, lub pob zeb qis qis no yog qhov loj, muaj kev siv hlau loj, siv ntau thaj av, thiab muaj peev txheej pib siab.Yog li lub pob zeb yog tsim rau kev ua haujlwm puv ntoob.

Coal zeb khoom siv hom 2:nruab nrab ceev coal zeb 

Qhov nruab nrab ceev thee zeb tseem hu ua ntsug thee zeb zeb, uas yog tus cwj pwm los ntawm kev sib tsoo ntawm ob pawg ntawm cov txheeb ze ntawm lub cev sib tsoo.Cov thee yog nyem thiab hauv av nruab nrab ntawm qhov chaw ntawm ob lub cev sib tsoo thiab crushed.Nyob rau tib lub sijhawm, cua kub los ntawm lub zeb dries thee thiab xa cov thee pulverized mus rau lub separator nyob rau sab sauv ntawm lub zeb cheeb tsam.Tom qab kev sib cais, cov thee pulverized ntawm qee qhov me me yog coj tawm ntawm lub zeb nrog cov cua ntws, thiab cov coarse pulverized thee rov qab mus rau qhov chaw sib tsoo rau regrinding.Qhov nruab nrab ceev thee zeb zeb muaj qhov zoo ntawm cov khoom siv compact, me me hneev taw, txuag hluav taws xob (kwv yees li 50% ~ 75% ntawm lub pob zeb), tsis tshua muaj suab nrov, lub teeb thiab rhiab tswj kev ua haujlwm.Tab sis nws tsis haum rau kev sib tsoo nyuaj thee.

Cov khoom siv thee zeb xaiv 3: kev kub ceev thee zeb

Qhov ceev ntawm kev kub ceev thee zeb yog 500 ~ 1500 r / min, uas yog tsim los ntawm high-speed rotor thiab sib tsoo plhaub.Cov kiv cua sib tsoo thiab rauj sib tsoo thiab lwm yam.Nyob rau hauv lub zeb, cov thee yog crushed los ntawm kev sib tsoo ntawm kev kub ceev kev cuam tshuam thiab kev sib tsoo plhaub thiab kev sib tsoo ntawm cov thee.Qhov no hom ntawm cov thee zeb thiab pulverized thee separator tsim ib tug tag nrho, cov qauv yog yooj yim, compact, thawj peev yog tsawg, tshwj xeeb tshaj yog haum rau sib tsoo high noo noo lignite thiab siab volatile cov ntsiab lus, yooj yim rau grind bituminous thee.Txawm li cas los xij, vim tias cov phaj cuam tshuam ncaj qha eroded thiab hnav los ntawm huab cua ntws, nws cov kev pab cuam lub neej feem ntau tsuas yog li 1000h thaum sib tsoo lignite, nquag hloov, thiab cov dej ntsiab lus ntawm cov thee hauv av yuav tsum tsis txhob siab dhau, uas feem ntau yog siv rau. ncaj qha tshuab boilers nyob rau hauv lub fais fab nroj tsuag, thiab yuav tsum tsis txhob siv rau blast furnace txhaj rhiav.

Cov saum toj no peb hom kev sib tsoo cov cuab yeej xaiv muaj qhov zoo thiab qhov tsis zoo, hauv kev xaiv cov khoom siv sib tsoo, nws yog qhov yuav tsum tau xav txog tag nrho cov kev xaiv ntawm pulverizing system.Cov hmoov txheej txheem tuaj yeem muab faib ua ob pawg: hom tshuab tshuab ncaj qha thiab nruab nrab cia hom (hu ua hom cia).Nyob rau hauv lub tshuab pulverization ncaj qha, thee yog hauv av rau hauv pulverized thee los ntawm cov thee zeb thiab ces tshuab ncaj qha mus rau hauv lub qhov cub rau combustion.Nyob rau hauv qhov system cia pulverization, lub pulverized thee yog thawj zaug muab cia rau hauv lub pulverized thee bin, thiab tom qab ntawd raws li qhov xav tau ntawm lub boiler load, lub pulverized thee yog xa los ntawm pulverized thee rau hauv lub cub tawg rau combustion los ntawm pulverizer.Cov tshuab pulverizing sib txawv kuj tseem tsim nyog rau ntau hom kev sib txawv ntawm cov thee thiab cov khoom siv sib tsoo pob zeb xaiv.Raws li cov txheej txheem pulverization, peb tau sau cov hauv qab no rau kev xaiv cov thee zeb:

(1) Steel pob zeb nyob rau hauv nruab nrab cia rau hauv hom kub cua hmoov system: yuav siv tau rau anthracite (Vsr <9%) thiab hnav nyob rau hauv lub zog saum lub thee.

(2) Pob zeb nruab nrab cia hom tso pa roj hmoov xa khoom: feem ntau yog siv rau cov thee uas muaj zog hnav thiab nruab nrab volatile (Var-19% ~ 27%) bituminous thee.

(3) Muab ob npaug rau-hauv ob-tawm steel pob zeb ncaj tshuab tshuab 22-241: rau nruab nrab-siab volatile (Vs.7-27% ~ 40%) bituminous thee.

(4) Nruab nrab-ceev thee zeb direct tshuab tshuab: haum rau kev sib tsoo bituminous thee nrog siab volatile ntsiab lus (Vanr-27% ~ 40%), siab noo noo cov ntsiab lus (sab nraud ya raws Mp≤15%) thiab muaj zog hnav, nrog rau cov thee Kev poob qis hauv qab muaj zog, thee combustion kev ua tau zoo yog flammable, thiab pulverized thee fineness raws li qhov yuav tsum tau ntawm cov thee zeb.

(5) Ntxuam zeb ncaj tshuab tshuab: haum rau lignite yaig hnav Performance index Ke≤3.5 thiab 50 MW thiab hauv qab bituminous thee chav tsev boiler