煤中汞-硫的依存關(guān)系及釋放特性研究.pdf

1、華中科技大學(xué)碩士學(xué)位論文煤中汞硫的依存關(guān)系及釋放特性研究姓名：劉峰申請(qǐng)學(xué)位級(jí)別：碩士專業(yè)：熱能工程指導(dǎo)教師：邱建榮曾漢才20080602華中科技大學(xué)碩士學(xué)位論文華中科技大學(xué)碩士學(xué)位論文IIAbstractAsoneoftheimptantatmospherepollutionsourcemercuryreleasingfromcoalfiredfluegascausesmercurypollutiondirectlypotentiall

2、ydoesharmtoenvironment.Inrecentyearsresearchershavebeguntostudymercuryspeciationtransfmationduringcoalcombustionwhichisjustcommencedinourcountry.Therefestudyingonmercuryspeciationtransfmationduringcoalcombustionhasveryim

3、ptantsignificance.CO2、SOXNOXproducedinthecoalcombustionalsopollutetheenvironmentbadly，O2CO2recyclingcombustionstylecansimultaneouslycurbCO2SOXNOXaswellasotherpollutant。Whilethereislittleresearchonthemercuryemissionacteri

4、sticsit’soxidationinthenewcombustionstyle.Thepaperfocusontherelationshipbetweenthemercurythesulfurincoalresearchstheemissionacteristicsofthemercurythesulfurtheirrelationshipunderthenewcombustionstyle.Thispaperfirststudyt

5、herelationshipbetweenthemercurythesulfurincoal.Usingsinkfloatthecoalwerediviedintothreedensityfraction.ObservedthecrelationofthemercuryconcentrationpercentagethepeakresponseofpyriteinXRDindiffrenentfractionstheresultssho

6、wedthatthereisacertaindegreeofintegrationbetweenthemercurythepyriteincoalthepossibilitythatmercurycombinedganicsulfur.TheninthehizontaltubefurnaceonairO2CO2atmospherethemercurysulfurreleaseacteristicsofninedifferentcoals

7、theircrelationwerestudied.Theresultsshowedthatboththeatmospherethevarietyofcoalimpactedthemercury’srelease.ThereleaseofSO2wasrestrainedundertheO2CO2atmospherethesynchronousreleaseofmercurySO2indicatedmercurycombinedganic

8、sulfur.FinallyinthehizontaltubefurnaceonairO2CO2atmosphere，themercuryoxidationrulewasstudied.TestresultsshowedthattheoxidationrateofmercuryhadalittlechangebuttheoveralllevelofoxidizedlowtheO2CO2atmospherehadaverysmalleff