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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(yáng)化工學(xué)院化學(xué)工程學(xué)院,沈陽(yáng)110142;2.建設(shè)部沈陽(yáng)煤氣熱力研究設(shè)計(jì)院,沈陽(yáng)110026)摘要開(kāi)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(zhǎng)脫硫劑在床內(nèi)的停留時(shí)間,促進(jìn)脫硫反應(yīng)進(jìn)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(shí)驗(yàn)研究了粗媒體顆粒的加入量及其他操作條件對(duì)此過(guò)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(shí),脫硫效率可達(dá)90%以上。關(guān)鍵詞煙道氣脫硫流化床二氧化硫中圖分類(lèi)號(hào)X70113文獻(xiàn)標(biāo)識(shí)碼A文章編號(hào)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
