VOCS废气处理的七大技术
DANGQIANWOGUOVOCSSHEJIDEWURANXINGYEGUANGQIEGEXINGYEPAIFANGDEVOCSZHONGLEIFANDUO、CHENGFENFUZA,CHANGJIANDEYOUTINGLEI、CHUNLEI、MILEI、ZHILEIDENG。JIAYOUZHAN、ZHUANGXIU、CANYIN、GANXI、PENTU、HUAGONGDENGSHENGCHANHUOSHIYONGYOUJIRONGJIDEXINGYEDOUHUICHANSHENGVOCSPAIFANG,ZHILIJISHUTIXIFUZA,SHEJISHIDUOZHONGJISHUJIZUHEJISHU,DANGQIAN,VOCSFEIQICHULIJISHUZHUYAOBAOKUOREPOHUAIFA、BIANYAXIFUFENLIYUJINGHUAJISHU、XIFUFAHEYANGHUACHULIFANGFADENG。
一、热破坏法
REPOHUAIFASHIZHIZHIJIEHEFUZHURANSHAOYOUJIQITI,YEJIUSHIVOC,HUOLIYONGHESHIDECUIHUAJIJIAKUAIVOCDEHUAXUEFANYING,ZUIZHONGDADAOJIANGDIYOUJIWUNONGDU,SHIQIBUZAIJUYOUWEIHAIXINGDEYIZHONGCHULIFANGFA。
热破坏法对于浓度较低的有机废气处理效果比较好,因此,在处理低浓度废气中得到了广泛应用。这种方法主要分为两种,即直接火焰燃烧和催化燃烧。直接火焰燃烧对有机废气的热处理效率相对较高,一般情况下可达到99%。而催化燃烧指的是在催化床层的作用下,加快有机废气的化学反应速度。这种方法比直接燃烧用时更少,是高浓度、小流量有机废气净化的首选技术。
二、吸附法
YOUJIFEIQIZHONGDEXIFUFAZHUYAOSHIYONGYUDINONGDU、GAOTONGLIANGYOUJIFEIQI。XIANJIEDUAN,ZHEIZHONGYOUJIFEIQIDECHULIFANGFAYIJINGXIANGDANGCHENGSHU,NENGLIANGXIAOHAOBIJIAOXIAO,DANSHICHULIXIAOLVQUEFEICHANGGAO,ERQIEKEYICHEDIJINGHUAYOUHAIYOUJIFEIQI。SHIJIANZHENGMING,ZHEIZHONGCHULIFANGFAZHIDETUIGUANGYINGYONG。
广西快3DANSHIZHEIZHONGFANGFAYECUNZAIYIDINGQUEXIAN,TAXUYAODESHEBEITIJIBIJIAOPANGDA,ERQIEGONGYILIUCHENGBIJIAOFUZA;RUGUOFEIQIZHONGYOUDALIANGZAZHI,ZERONGYIDAOZHIGONGZUORENYUANZHONGDU。SUOYI,SHIYONGCIFANGFACHULIFEIQIDEGUANJIANZAIYUXIFUJI。DANGQIAN,CAIYONGXIFUFACHULIYOUJIFEIQI,DUOSHIYONGHUOXINGTAN,ZHUYAOSHIYINWEIHUOXINGTANXIKONGJIEGOUBIJIAOHAO,XIFUXINGBIJIAOQIANG。
广西快3CIWAI,JINGGUOYANGHUATIEHUOCHOUYANGCHULI,HUOXINGTANDEXIFUXINGNENGJIANGHUIGENGHAO,YOUJIFEIQIDECHULIJIANGHUIGENGJIAANQUANHEYOUXIAO。
三、生物处理法
CONGCHULIDEJIBENYUANLISHANGJIANG,CAIYONGSHENGWUCHULIFANGFACHULIYOUJIFEIQI,SHISHIYONGWEISHENGWUDESHENGLIGUOCHENGBAYOUJIFEIQIZHONGDEYOUHAIWUZHIZHUANHUAWEIJIANDANDEWUJIWU,BIRUCO2、H2OHEQITAJIANDANWUJIWUDENG。ZHEISHIYIZHONGWUHAIDEYOUJIFEIQICHULIFANGSHI。
广西快3YIBANQINGKUANGXIA,YIGEWANZHENGDESHENGWUCHULIYOUJIFEIQIGUOCHENGBAOKUO3GEJIBENBUZHOU:
广西快3a)YOUJIFEIQIZHONGDEYOUJIWURANWUSHOUXIANYUSHUIJIECHU,ZAISHUIZHONGKEYIXUNSURONGJIE;
b)ZAIYEMOZHONGRONGJIEDEYOUJIWU,ZAIYETAINONGDUDIDEQINGKUANGXIA,KEYIZHUBUKUOSANDAOSHENGWUMOZHONG,JINERBEIFUZHEZAISHENGWUMOSHANGDEWEISHENGWUXISHOU;
c)BEIWEISHENGWUXISHOUDEYOUJIFEIQI,ZAIQIZISHENSHENGLIDAIXIEGUOCHENGZHONG,JIANGHUIBEIJIANGJIE,ZUIZHONGZHUANHUAWEIDUIHUANJINGMEIYOUSUNHAIDEHUAHEWUZHI。
四、变压吸附分离与净化技术
BIANYAXIFUFENLIYUJINGHUAJISHUSHILIYONGQITIZUFENKEXIFUZAIGUTICAILIAOSHANGDETEXING,ZAIYOUJIFEIQIYUFENLIJINGHUAZHUANGZHIZHONG,QITIDEYALIHUICHUXIANYIDINGDEBIANHUA,TONGGUOZHEIZHONGYALIBIANHUALAICHULIYOUJIFEIQI。
PSAJISHUZHUYAOYINGYONGDESHIWULIFA,TONGGUOWULIFALAISHIXIANYOUJIFEIQIDEJINGHUA,SHIYONGCAILIAOZHUYAOSHIFEISHIFENZISHAI。FEISHIFENZISHAI,ZAIXIFUXUANZEXINGHEXIFULIANGLIANGFANGMIANYOUYIDINGYOUSHI。ZAIYIDINGWENDUHEYALIXIA,ZHEIZHONGFEISHIFENZISHAIKEYIXIFUYOUJIFEIQIZHONGDEYOUJICHENGFEN,RANHOUBASHENGYUQITISHUSONGDAOXIAGEHUANJIEZHONG。ZAIXIFUYOUJIFEIQIHOU,TONGGUOYIDINGGONGXUJIANGQIZHUANHUA,BAOCHIBINGTIGAOXIFUJIDEZAISHENGNENGLI,JINERKERANGXIFUJIZAICITOURUSHIYONG,RANHOUZHONGFUSHANGBUZHOUGONGXU,XUNHUANFANFU,ZHIDAOYOUJIFEIQIDEDAOJINGHUA。
JINNIANLAI,GAIJISHUKAISHIZAIGONGYESHENGCHANZHONGYINGYONG,DUIYUQITIFENLIYOULIANGHAOXIAOGUO。GAIJISHUDEZHUYAOYOUSHIYOU:NENGYUANXIAOHAOSHAO、CHENGBENBIJIAODI、GONGXUCAOZUOZIDONGHUAJIFENLIJINGHUAHOUHUNHEWUCHUNDUBIJIAOGAO、HUANJINGWURANXIAODENG。SHIYONGGAIJISHUDUIYUHUISHOUHECHULIYOUYIDINGJIAZHIDEQITIXIAOGUOLIANGHAO,SHICHANGFAZHANQIANJINGGUANGKUO,CHENGWEIWEILAIYOUJIFEIQICHULIJISHUDEFAZHANFANGXIANG。
五、氧化法
广西快3DUIYUYOUDU、YOUHAI,ERQIEBUXUYAOHUISHOUDEVOC,REYANGHUAFASHIZUISHIHEDECHULIJISHUHEFANGFA。YANGHUAFADEJIBENYUANLI:VOCYUO2FASHENGYANGHUAFANYING,SHENGCHENGCO2HEH2O。
KEYIKANCHU,GAIYANGHUAFANYINGHEHUAXUESHANGDERANSHAOGUOCHENGXIANGLEISI,DANQIYOUYUVOCNONGDUBIJIAODI,ZAIHUAXUEFANYINGZHONGBUHUICHANSHENGROUYANKEJIANDEHUOYAN。YIBANQINGKUANGXIA,YANGHUAFATONGGUOLIANGZHONGFANGFAKEQUEBAOYANGHUAFANYINGDESHUNLIJINXING:
a)JIARE。SHIHANYOUVOCDEYOUJIFEIQIDADAOFANYINGWENDU;
b)SHIYONGCUIHUAJI。RUGUOWENDUBIJIAODI,ZEYANGHUAFANYINGKEZAICUIHUAJIBIAOMIANJINXING。
SUOYI,YOUJIFEIQICHULIDEYANGHUAFAFENWEIYIXIALIANGZHONGFANGFA:
a)CUIHUAYANGHUAFA。XIANJIEDUAN,CUIHUAYANGHUAFASHIYONGDECUIHUAJIYOULIANGZHONG,JIGUIJINSHUCUIHUAJIHEFEIGUIJINSHUCUIHUAJI。GUIJINSHUCUIHUAJIZHUYAOBAOKUOPt、PdDENG,TAMENYIXIKELIXINGSHIYIFUZAICUIHUAJIZAITISHANG,ERCUIHUAJIZAITITONGCHANGSHIJINSHUHUOTAOCIFENGWO,HUOSANZHUANGTIANLIAO;FEIGUIJINSHUCUIHUAJIZHUYAOSHIYOUGUODUYUANSUJINSHUYANGHUAWU,BIRUMnO2,YUZHANHEJIJINGGUOYIDINGBILIHUNHE,RANHOUZHICHENGDECUIHUAJI。WEIYOUXIAOFANGZHICUIHUAJIZHONGDUHOUSANGSHICUIHUAHUOXING,ZAICHULIQIANBIXUCHEDIQINGCHUKESHICUIHUAJIZHONGDUDEWUZHI,BIRUPb、ZnHEHgDENG。RUGUOYOUJIFEIQIZHONGDECUIHUAJIDUWU、ZHEGAIZHIWUFAQINGCHU,ZEBUKESHIYONGZHEIZHONGCUIHUAYANGHUAFACHULIVOC。
b)REYANGHUAFA。REYANGHUAFADANGQIANFENWEISANZHONG:RELIRANSHAOSHI、JIANBISHI、XURESHI。SANZHONGFANGFADEZHUYAOQUBIEZAIYURELIANGHUISHOUFANGSHI。ZHEISANZHONGFANGFAJUNNENGCUIHUAFAJIEHE,JIANGDIHUAXUEFANYINGDEFANYINGWENDU。
广西快3RELIRANSHAOSHIREYANGHUAQI,YIBANQINGKUANGXIASHIZHIQITIFENSHAOLU。ZHEIZHONGQITIFENSHAOLUYOUZHURANJI、HUNHEQUHERANSHAOSHISANBUFENZUCHENG。QIZHONG,ZHURANJI,BIRUTIANRANQI、SHIYOUDENG,SHIFUZHURANLIAO,ZAIRANSHAOGUOCHENGZHONG,FENSHAOLUNEICHANSHENGDEREHUNHEQUKEDUIVOCFEIQIYURE,YUREHOUBIANKEWEIYOUJIFEIQIDECHULITIGONGZUGOUKONGJIAN、SHIJIAN,ZUIZHONGSHIXIANYOUJIFEIQIDEWUHAIHUACHULI。
广西快3ZAIGONGYANGCHONGZUTIAOJIANXIA,YANGHUAFANYINGDEFANYINGCHENGDU——VOCQUCHULV——ZHUYAOQUJUEYU“SANTTIAOJIAN”:FANYINGWENDU(Temperat)、SHIJIAN(Time)、TUANLIUHUNHEQINGKUANG(Turbulence)。ZHEI“SANTTIAOJIAN”SHIXIANGHULIANXIDE,ZAIYIDINGFANWEINEI,YIGETIAOJIANDEGAISHANKESHILINGWAILIANGGETIAOJIANJIANGDI。RELIRANSHAOSHIREYANGHUAQIDEQUEDIANZAIYU:FUZHURANLIAOJIAGEGAO,DAOZHIZHUANGZHICAOZUOFEIYONGBIJIAOGAO。
广西快3JIANBISHIREYANGHUAQIZHIDESHIZAIREYANGHUAZHUANGZHIZHONG,JIARUJIANBISHIREJIAOHUANQI,JINERBARANSHAOSHIPAICHUQITIDERELIANGCHUANSONGJIYANGHUAZHUANGZHIJINKOUCHUWENDUBIJIAODIDEQITI,YUREWANCHENGHOUBIANKECUCHENGYANGHUAFANYING。XIANJIEDUAN,JIANBISHIREJIAOHUANQIDEREHUISHOULVZUIGAOKEDA85%,YINCIDAFUJIANGDILEFUZHURANLIAODEXIAOHAO。YIBANQINGKUANGXIA,JIANBISHIREJIAOHUANQIYOUSANZHONGXINGSHI:GUANSHI、QIAOSHIHEBANSHI。YOUYUREYANGHUAWENDUBIXUKONGZHIZAI800℃~1000℃FANWEINEI,YINCI,JIANBISHIREJIAOHUANBIXUYOUBUXIUGANGHUOHEJINCAILIAOZHICHENG。SUOYIJIANBISHIREJIAOHUANQIDEZAOJIAXIANGDANGGAO,ERZHEIYESHIQIQUEDIANSUOZAI。CIWAI,CAILIAODEREYINGLIYEHENNANXIAOCHU,ZHEISHIJIANBISHIREJIAOHUANDELINGWAIYIGEQUEDIAN。
XURESHIREYANGHUAQI,JIANCHENGWEIRTO,ZAIREYANGHUAZHUANGZHIZHONGJIRUXURESHIREJIAOHUANQI,ZAIWANCHENGVOCYUREHOUBIANKEJINXINGYANGHUAFANYING。XIANJIEDUAN,XURESHIREYANGHUAQIDEREHUISHOULVYIJINGDADAOLE95%,QIEQIZHANYONGKONGJIANBIJIAOXIAO,FUZHURANLIAODEXIAOHAOYEBIJIAOSHAO。YOUYUDANGQIANDEXURECAILIAOKESHIYONGTAOCITIANLIAO,QIKECHULIFUSHIXINGHUOHANYOUKELIWUDEVOCQITI。
XIANJIEDUAN,RTOZHUANGZHIFENWEIXUANZHUANSHIHEFAMENQIEHUANSHILIANGZHONG,QIZHONG,FAMENQIEHUANSHISHIZUICHANGJIANDEYIZHONG,YOU2GEHUODUOGETAOCITIANCHONGCHUANGZUCHENG,TONGGUOQIEHUANFAMENLAIDADAOGAIBIANQILIUFANGXIANGDEMUDE。
六、液体吸收法
广西快3YETIXISHOUFAZHIDESHITONGGUOXISHOUJIYUYOUJIFEIQIJIECHU,BAYOUJIFEIQIZHONGDEYOUHAIFENZIZHUANYIDAOXISHOUJIZHONG,CONGERSHIXIANFENLIYOUJIFEIQIDEMUDE。ZHEIZHONGCHULIFANGFASHIYIZHONGDIANXINGDEWULIHUAXUEZUOYONGGUOCHENG。YOUJIFEIQIZHUANYIDAOXISHOUJIZHONGHOU,CAIYONGJIEXIFANGFABAXISHOUJIZHONGYOUHAIFENZIQUCHUDIAO,RANHOUHUISHOU,SHIXIANXISHOUJIDEZHONGFUSHIYONGHELIYONG。
广西快3CONGZUOYONGYUANLIDEJIAODUHUAFEN,CIFANGFAKEFENWEIHUAXUEFANGFAHEWULIFANGFA。WULIFANGFASHIZHILIYONGWUZHIZHIJIANXIANGRONGDEYUANLI,BASHUIKANZUOXISHOUJI,BAYOUJIFEIQIZHONGDEYOUHAIFENZIQUCHUDIAO,DANSHIDUIYUBURONGYUSHUIDEFEIQI,BIRUBEN,ZEZHINENGTONGGUOHUAXUEFANGFAQINGCHU,YEJIUSHITONGGUOYOUJIFEIQIYURONGJIFASHENGHUAXUEFANYING,RANHOUYUYIQUCHU。
七、冷凝回收法
ZAIBUTONGWENDUXIA,YOUJIWUZHIDEBAOHEDUBUTONG,LENGNINGHUISHOUFABIANSHILIYONGYOUJIWUZHEIYITEDIANLAIFAHUIZUOYONG,TONGGUOJIANGDIHUOTIGAOXITONGYALI,BACHUYUZHENGQIHUANJINGZHONGDEYOUJIWUZHITONGGUOLENGNINGFANGSHITIQUCHULAI。LENGNINGTIQUHOU,YOUJIFEIQIBIANKEDEDAOBIJIAOGAODEJINGHUA。QIQUEDIANSHICAOZUONANDUBIJIAODA,ZAICHANGWENXIAYEBURONGYIYONGLENGQUESHUILAIWANCHENG,XUYAOJILENGNINGSHUIJIANGWEN,SUOYIXUYAOJIAODUOFEIYONG。ZHEIZHONGCHULIFANGFAZHUYAOSHIYONGYUNONGDUGAOQIEWENDUBIJIAODIDEYOUJIFEIQICHULI。