Boiler Flue Gas Acid Dew Point: cuam tshuam cov khoom siv Corrosion thiab Environmental Emissions

Flue gas acid dew pointyog qhov kub ntawm cov kua qaub hauv cov roj flue pib condense rau hauv cov kua kua qaub nyob rau hauv ib lub siab.

Cov roj siv hauv boilers, xws li cov thee, cov roj hnyav, thiab cov roj nkev, txhua tus muaj S. Thaum lub sij hawm combustion, S thiab O₂ tsim SO₂. Ib qho me me ntawm SO₂ hloov mus rau SO₃ nyob rau hauv lub catalysis ntawm catalysts xws li Fe₂O₃ thiab V₂O₅. Raws li ib txwm muaj, qhov ntim cov ntsiab lus ntawm SO₃ hauv boiler flue roj yog 1 × 10-6-50 × 10-6, thiab dej vapor yog li 10%. Thaum cov roj cua kub qis dua 200 degree, SO₃ thiab dej vapor tau ua tiav ua ke los ua H₂SO₄ vapor. Ib qho me me ntawm H₂SO₄ vapor yuav ua rau kom cov kua qaub dew point. Thaum qhov kub thiab txias ntawm cov khoom siv hluav taws xob boiler kub yog qis dua qhovflue gas acid dew point, H₂SO₄ vapor yuav condense ntawm qhov chaw mus rau hauv sulfuric acid tov nrog ib tug concentration ntawm txog 80%, uas adheres rau saum npoo ntawm tshav kub exchanger thiab ua rau acid corrosion. Cov khoom siv uas raug cuam tshuam rau corrosion muaj xws li cua preheaters, induced cua ntsawj ntshab kiv cua, thiab cov phab ntsa flue.

Corrosion ntawm cov cuab yeej zoo li no tuaj yeem ua rau lub sijhawm poob qis thiab kev saib xyuas kim, cuam tshuam ncaj qha rau cov nroj tsuag kev tsim khoom thiab ua kom cov nqi tu. Tsis tas li ntawd, sulfuric acid kuj tuaj yeem ua rau emission ntawm cov pa roj carbon monoxide, uas tuaj yeem tsim kev puas tsuaj rau ib puag ncig hauv zos lossis ib puag ncig. Advanced burner manufacturing thiab combustion tswj technology tau zoo heev txhim kho lub thermal efficiency ntawm boilers. Qhov nce hauv kev ua tau zoo yog vim qhov txo qis ntawm cov pa cua kub; Txawm li cas los xij, qis dua cov pa roj cua kub ua rau muaj kev pheej hmoo ntawm cov ntsiab lus acid tsim.

SLDA2100 yog H2SO4 acid dew point ntsuas kub uas tuaj yeem ntsuas ncaj qha, raug thiab ntseeg tau.flue gas acid dew point.

Lub SLDA2100 acidity dew point transmitter siv high-voltage hluav taws xob cua sov sensor tshuab los saib xyuas cov kua qaub dew point ntawm roj roj. Thaum qhov kev sojntsuam tau muab tso rau hauv cov yeeb nkab lossis flue, qhov ntsuas qhov ntsuas kub yuav nce ntxiv vim qhov kub ntawm cov roj flue. Tom qab ntawd maj mam qhib lub cua valve kom txias qhov kev sojntsuam taub. Vim qhov nce hauv electrode tam sim no dhau los ntawm acidity dew point transmitter, condensation yuav tshwm sim rau ntawm qhov chaw sojntsuam. Thaum kub poob, condensation ntawm qhov kev sojntsuam taub yuav nce. Yog tias qhov ntsuas cua txias qis qis, qhov ntsuas kub yuav nce ntxiv thiab cov kua qaub yuav evaporate.

Ntawm cov kua qaub dew point kub, tus nqi deposition thiab evaporation tus nqi yuav zoo ib yam, thiab cov condensation thickness thiab tam sim no nyeem yog tas li. Thaum cov ntawv nyeem tseem tsis hloov pauv, qhov ntsuas kub yog qhovflue gas acid dew pointnyob rau hauv tus mob no.