CFB boiler yog ib hom tshiab ntawm lub cub tawg nrog kev ua haujlwm siab thiab tsis muaj kuab paug tsim tom qab saws rauv thiab pulverized thee rauv.
Vim nws qhov zoo ntawm kev sib xyaw ua haujlwm siab, kev hloov pauv dav dav ntawm cov thee, cov kev cai loj thauj khoom, tsis tshua muaj nitrogen oxide emission thiab yooj yim desulfurization, nws tau siv dav thiab txhawb nqa hauv ntiaj teb. Txawm li cas los xij, qhov teeb meem tseem ceeb ntawm kev hnav ris tsho hnyav txwv kev lag luam mus sij hawm ntev ntawm lub tshuab hluav taws xob hom.
1, circulating fluidized txaj boiler hnav
1) Hnav teeb meem nyob rau hauv circulating fluidized txaj boilers
Vim hais tias cov hmoov tshauv nyob rau hauv lub circulating fluidized txaj boiler yog siab, feem ntau kaum ntawm lub sij hawm, ntau pua lub sij hawm, los yog txawm ntau txhiab lub sij hawm ntawm lub pulverized thee rauv, qhov hnav ntawm lub circulating fluidized txaj boiler yog ntau hnyav dua li ntawm lwm yam. hom boilers, thiab cov teeb meem tiv thaiv hnav ntawm cov cua sov saum npoo thiab cov ntaub ntawv refractory yuav tsum tau them tshwj xeeb mloog. Yuav ua li cas los daws qhov teeb meem hnav yog ncaj qha ntsig txog kev ua tiav lossis tsis ua tiav ntawm CFB boiler tsim, thiab tseem cuam tshuam ncaj qha rau kev muaj CFB boiler units.
2) Daim ntawv hnav
Raws li kev hnav khaub ncaws sib txawv, hnav tuaj yeem muab faib ua cov nplaum hnav, hnav hnav, corrosion hnav, tiv tauj hnav, yaig hnav, fretting hnav thiab lwm yam. Kev hnav los ntawm kev cuam tshuam ntawm cov kua los yog cov khoom ua rau ntawm qhov chaw ntawm cov khoom ntawm qhov ceev thiab lub kaum sab xis yog hu ua yaig (los yog cuam tshuam hnav). Muaj ob hom kev yaig, raws li hu ua yaig hnav thiab cuam tshuam, thiab micro-morphology ntawm kev yaig ntog txheej txheem ntawm ob hom kev hnav no txawv kiag li.
Ib nrab tshaj tawm ntawm cov particle perpendicular mus rau cov khoom nto ua rau nws wedged rau hauv cov khoom cuam tshuam, thiab ib nrab tshaj tawm ntawm cov particle tangent rau cov khoom nto ua rau nws swb raws cov khoom nto. Qhov sib xyaw ua ke ntawm ob qhov kev tshaj tawm ib nrab yog ib hom kev npaj ua haujlwm. Yog tias cov khoom cuam tshuam tsis tuaj yeem tiv taus qhov cuam tshuam no, uas yog, ib qho me me raug txiav tawm, yog li tom qab siv ntau zaus, cov khoom nto yuav hnav.
Kev cuam tshuam hnav yog hais txog cov khoom sib piv rau cov khoom nto ntawm lub kaum sab xis loj, lossis ze rau ntawm txoj kab ntsug, ntawm ib qho kev cuam tshuam ceev ntawm cov khoom nto los tsim cov yas me me deformation ntawm microscopic tawg, nyob rau lub sijhawm ntev. ntawm qhov cuam tshuam ntau zaus, maj mam ua cov yas deformation txheej ntawm tag nrho cov khoom tawm thiab tsim hnav.
Raws li qhov sib txawv hnav hom, hnav tuaj yeem muab faib ua ob yam khoom hnav, peb yam khoom hnav. Thaum hnav ntawm ob yam khoom, cov khoom impinges thiab erodes phab ntsa nrog nws tus kheej momentum. Nyob rau hauv peb lub cev hnav, cov khoom txav mus raws phab ntsa yog cuam tshuam los ntawm cov pawg particles, thiab cov pawg particles siv cov qub los ua qhov nruab nrab hnav los hnav cov cua sov.