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1、第7卷第2期環(huán)境污染治理技術(shù)與設(shè)備Vol.7,No.22006年2月TechniquesandEquipmentforEnvironmentalPollutionControlFeb.2006粗媒體顆粒流化床半干法煙氣脫硫11213張麗馬鴻賓馬志宇劉云義(1.沈陽化工學(xué)院化學(xué)工程學(xué)院,沈陽110142;2.建設(shè)部沈陽煤氣熱力研究設(shè)計院,沈陽110026)摘要開發(fā)了粗媒體顆粒流化床半干法煙氣脫硫技術(shù)。在流化床內(nèi)加入惰性粗媒體顆粒,改善脫硫劑與煙氣的接觸,延長脫硫劑在床內(nèi)的停留時間,促進脫硫反應(yīng)進行,提高脫硫效率和脫硫劑
2、利用率。以工業(yè)用石灰石為脫硫劑,實驗研究了粗媒體顆粒的加入量及其他操作條件對此過程脫硫效率的影響。結(jié)果表明:隨著粗媒體顆粒粒徑減小及床內(nèi)加入量增加,煙氣脫硫效率提高;隨著Ca/S增大、飽和接近度降低、空速及脫硫劑顆粒粒徑減小,脫硫效率提高。當(dāng)粗媒體顆粒的-1靜止床高為122mm,飽和接近度為15～18℃、空速為2850h、鈣硫比為1.0～1.1、脫硫劑粒徑為64μm時,脫硫效率可達90%以上。關(guān)鍵詞煙道氣脫硫流化床二氧化硫中圖分類號X70113文獻標(biāo)識碼A文章編號100829241(2006)0220057205Fl
3、uegasdesulfurizationbyasemidryprocesswithcoarseparticlefluidizedbed1121ZhangLiMaHongbinMaZhiyuLiuYunyi(1.DepartmentofChemicalEngineering,ShenyangInstituteofChemicalTechnology,Shenyang110142;(2.ShenyangGasHeatResearchandDesignInstituteofConstructionMinistry,Shen
4、yang110026)AbstractAnewtypeoffluegasdesulfurizationtechnology,removalofSO2fromfluegasbyasemidryprocessincoarseparticlefluidizedbed(CPFB),wasdeveloped.Inthisprocesscoarseparticleswereaddedintoafluidizedbedinwhichthedesulfurizationabsorbentparticleswerepromotedto
5、contactwithfluegasbythecoarseparticles.Accordingly,thereactionbetweentheabsorbentandSO2wasimproved,andhighdesulfuriza2tionefficiencycanbeobtained.Intheexperiments,limestoneslurrywasusedasthedesulfurizationabsorbent.Theeffectsofthestaticheightofthecoarseparticle
6、sinthebedandotheroperationconditionsondesulfurizationefficiencywereinvestigated.Experimentalresultsshowedthat:desulfurizationefficiencyincreaseswiththein2creasingoftheheightofcoarseparticlesinthebed,themolarratioofCatoSandtheinletconcentrationofSO2increasing,an
7、dwiththedecreasingofthediameterofthecoarseparticles,thespacevelocityofsimulatedfluegasandtheapproachingsaturationtemperatureandthediameterofabsorbent.Basedontheobservation,whenthestaticheightofthecoarseparticlesinthebedis122mm,themolarratioofCatoSis1.0～1.1,thea
8、p2-1proachingtosaturationtemperatureis15～18℃,thespacevelocityoffluegasis2850h,andthediameterofabsorbentis64μm,desulfurizationefficiencyisover90%.Keywordsfluegas;desulfurizat
