黑龙江快乐十分

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燃煤火力发电厂烟气余热回收利用技术概况

文章来源:志恒环保   作者:志恒环保   发布时间:2018-05-24 09:49   浏览次数:

返回:技术支持

  摘 要:对燃煤火力发电机组而言,排烟热损失是锅炉热效率的重要影响因素。文章对目前主要的烟气余热回收技术进行论述,包括:低温省煤器技术、低低温烟气处理技术、前置式液相介质空预器与低温省煤器组合技术、新型电站锅炉余热利用综合优化技术,探讨分析了各类烟气余热回收技术的技术原理及优缺点,为火力发电厂烟气余热回收技术的选择提供参考依据。

  QIANYAN

  ZAIHUOLIFADIANJIZUZHONG,GUOLUXIAOLVSHIJIZUJINGJIXINGYUNXINGDEZHONGYAOZHIBIAO,ERZAIGELEIGUOLURESUNSHIZHONG,PAIYANRESUNSHIZHANGUOLUZONGDERESUNSHIYIBANYISHANG[1]。YANJIUJIEGUOBIAOMING:PAIYANWENDUMEISHANGSHENG30℃,GUOLUXIAOLVJIANGDI1%,JIZUBIAOMEIHAOSHANGSHENG3g/(kW·h)[2]。XIANYIJIZUDEPAIYANWENDUSHEJIZHIYUEWEI130℃ZUOYOU,DANYOUYURANMEITIAOJIANJIDIANCHANGYUNXINGSHUIPINGDENGWENTI,PAIYANWENDUSHIJIZHIPUBIANZAI150℃ZUOYOU。JIAOGAODEPAIYANWENDUHUIDAOZHIGUOLUXIAOLVJIANGDI,JIZUNIANPINGJUNMEIHAOSHANGSHENG,BINGZAOCHENGYANCHENWURANWUPAIFANGLIANGZENGJIA,YINGXIANGJIZUDEJINGJIXINGYUNXINGHEWURANWUPAIFANGZHIBIAO。YINCI,RUHEYOUXIAODIDUIPAIYANYUREJINXINGHUISHOULIYONG,CHENGWEIMUQIANGEHUOLIFADIANJIZUJIDAIJIEJUEDEWENTI。

  MUQIAN,SHIXIANYANQIYUREHUISHOULIYONGDEFANGSHIZHUYAOYOU:YANQIYUREJIAREJIZUHUIREXITONGDENINGJIESHUI,JIAREREWANGSHUI,JIAREGUOLUDEYICIFENG、ERCIFENG。XIANGYINGDEYANQIYUREHUISHOUJISHUYOU:DIWENSHENGMEIQIJISHU,DIDIWENYANQICHULIJISHU,QIANZHISHIYEXIANGJIEZHIKONGYUQIYUDIWENSHENGMEIQIZUHEJISHU,XINXINGDIANZHANGUOLUYURELIYONGZONGHEYOUHUAJISHU[3-8]。BENWENJIANGDUIYISHANGSIZHONGJISHUDEYUANLIJIYOUQUEDIANJINXINGDUIBIJIESHAO,WEIHUOLIFADIANCHANGXUANZEYANQIYURELIYONGJISHUDEXUANZETIGONGCANKAO。

黑龙江快乐十分  1.DIWENSHENGMEIQIJISHU

  DIWENSHENGMEIQIJISHUSHITONGGUOYANQIYURELAIJIAREDIJIAHUIREXITONGDENINGJIESHUI,JIANGGUOLUDEPAIYANWENDUJIANGDIZHIHESHIZHI。YANQIYURETONGGUOHUIREXITONGDENINGJIESHUIHUISHOURELIANGLAIPAIJIXIAYIJIDIJIADEQILUNJICHOUQI,SHICHOUQIHUIDAOQILUNJIJIXUZUOGONG,ZENGDAQIJIDEZUOGONGGONGLV,CONGERJIANGDIJIZUFADIANBIAOMEIHAO[3,9-11]。ERDUICAINUANGONGREJIZU,ZAIGONGRESHIQIKEJIANGHUISHOUDERELIANGYONGYUJIAREREWANGSHUI,JIENENGXIAOGUOGENGXIANZHU。

  DIWENSHENGMEIQIGENJUQIBUZHIWEIZHIDEBUTONG,KEFENWEIYIXIALIANGZHONGQINGKUANG:

  a)DIWENSHENGMEIQIBUZHIYUKONGYUQIYUCHUCHENQIZHIJIAN。GAIBUZHIFANGSHIZAIHUISHOUYANQIYUREDETONGSHI,JIANXIAOFEIHUIBIDIANZU,TIGAOCHUCHENQIDEXIAOLV,JIANSHAOFENCHENDENGWURANWUDEPAIFANG。ERQIEXITONGJIEGOUJIANDAN,GONGCHENGLIANGJIAOXIAO,TOUZISHAO;DANWEILEBAOZHENGDIWENSHENGMEIQIJIXIAYOUSHEBEIBUSHOUDAODIWENSUANFUSHI,BIXUKONGZHIHUANREQIDEYUNXINGWENDU,SHIHUANREQICHUKOUYANQIWENDUGAOYUSUANLUDIAN,YINCIWUFASHIXIANYANQIYUREDECHONGFENHUISHOU。

黑龙江快乐十分  b)DIWENSHENGMEIQIBUZHIYUYINFENGJIYUTUOLIUTAZHIJIAN。GAIBUZHIFANGSHIBIMIANLECHUCHENQI、YINFENGJIDENGSHEBEIDEDIWENFUSHIWENTI,KEJIANGYANQIWENDUJIANGZHIJIAODISHUIPING,KEYISHIXIANYANQIYUREZUIDACHENGDUSHANGDEHUISHOU,BINGJIANSHAOLETUOLIUXITONGJIANWENSHUIDEBUSHUILIANG,JUYOUYIDINGDEJIESHUIXIAOGUO。DANYOUYUYANQIWENDUJIANGZHIJIAODIZHI,DAILAILEDIWENSHENGMEIQIJIYANDAODEDIWENSUANFUSHIWENTI,ERQIECUNZAIZHEGAIZAOKONGJIANSHOUXIANDEWENTI。ZHENDUIYISHANGWENTI,CHENJUNLU[12]TICHULEYIZHONGDIANZHANGUOLUJIDIWENYANQIYUREZAIYONGZHUANGZHI,GAIZHUANGZHIHUANREQICAIZHIWEIFUSULIAOCAILIAO,KEYOUXIAOBIMIANHUANREQIDEDIWENFUSHI、JIHUIDENGWENTI,KEYOUXIAOSHIXIANYANQIYUREZUIDACHENGDUDEHUISHOULIYONG。

  2.DIDIWENYANQICHULIJISHU

低温省煤器

  DIDIWENYANQICHULIJISHU,GAIXITONGYOUDIYIJIREHUISHOUQIYUDIERJIZAIJIAREQIZUCHENG。QIZHONG,DIYIJIBUZHIZAIKONGYUQIHEDIANCHUCHENQIZHIJIANDEYANDAOSHANG,DIERJIZEBUZHIZAITUOLIUTAYUYANCONGZHIJIANDEYANDAOSHANG[13-14]。TONGGUOREMEISHUIDEBISHIXUNHUAN,DIYIJIREHUISHOUQIJIANGCHUCHENQIRUKOUYANQIWENDUCONG120~130℃JIANGDAO90℃ZUOYOU;DIERJIZAIJIAREQIZELIYONGDIYIJIREHUISHOUQIHUISHOUDERELIANGJIANGTUOLIUTACHUKOUDEYANQIWENDUSHENGGAOZHI80℃ZUOYOU。

黑龙江快乐十分  DIDIWENYANQICHULIJISHUJUYOUYIXIATEDIAN:

  (1)JIANGDICHANGYONGDIANHAO,JIANGDISHEBEIYUNXINGFEIYONG。DIDIWENYANQICHULIJISHUJIANGDILEYANQIWENDU,YANQITIJILIULIANGJIANXIAO,JIANGDILEFENGJIDENGSHEBEIDEDIANHAO,SHEBEIYUNXINGFEIYONGJIANGDI。

  (2)JIANGDICHUCHENQIRUKOUWENDUZHI,JIANGDIFENCHENBIDIANZU,KEYOUXIAOTIGAODIANCHUCHENQIDECHUCHENXIAOLV[15];SHENGGAOTUOLIUTAHOUYANQIWENDU,KEYOUXIAOGAISHANTUOLIUTAHOUDEYANDAOJIYANCONGDEDIWENFUSHIWENTI,BINGBAITUOBAIYANCONGDENGSHIJUEWURANWENTI。

黑龙江快乐十分  (3)KEYOUXIAOLIYONGHUISHOUDEYANQIYURE,HUISHOUDERELIANGCHUYONGYUJIARETUOLIUTACHUKOUDEYANQIWAI,HAIKEYONGYUJIAREHUIREXITONGDEDIJIANINGJIESHUI、CAINUANGONGREXITONGDEREWANGSHUI。

  (4)YOUYUPAIYANWENDUJIANGDI,FENCHENBIDIANZUDENGCANSHUFASHENGBIANHUA,YINCIBIXUZHONGXINDUIDIANCHUCHENQIJINXINGYOUHUASHEJI。YINCI,GAIJISHUFANGANDEGONGCHENGLIANGJIAODA,CHUQITOUZIYEJIAOGAO。

黑龙江快乐十分  3.QIANZHISHIYEXIANGJIEZHIKONGYUQIYUDIWENSHENGMEIQIZUHEXITONG

黑龙江快乐十分  QIANZHISHIYEXIANGJIEZHIKONGYUQIYUDIWENSHENGMEIQIZUHEXITONGRUTU2SUOSHI[5,16]。GAIXITONGDEZHONGJIANREMEIJIEZHITONGCHANGWEIBISHIXUNHUANSHUI。XITONGYIQIANZHISHIKONGYUQIFANGSHIYUNXINGSHI,ZHUNINGJIESHUIGUANLUDECHU、HUISHUIFAMENGUANBI,TONGGUOKONGYUQIJINFENGHUISHOUYANQIYURE;YIDIWENSHENGMEIQIFANGSHIYUNXINGSHI,GUANBIQIANZHISHIKONGYUQISHOUREMIANSHUICEJIN、CHUKOUFAMEN,TONGGUONINGJIESHUIHUISHOUWEIBUYANQIYURE,PAIJIXIAYIJIDIJIACHOUQI,JINRUQILUNJIZUOGONG,TIGAOZUOGONGLIANG,TIGAOQUANCHANGREXIAOLV。

低温省煤器

  YIQIANZHISHIKONGYUQIFANGSHIYUNXINGSHI,QUDAILEYUANYOUDEZHENGQINUANFENGQISHEBEI,FANGZHILEKONGYUQICHUXIANFUSHI、JIHUIDEWENTI,BAOZHENGLEKONGYUQIDEANQUANWENDINGYUNXING,BINGJIESHENGLEZHENGQINUANFENGQIDECHOUQI,TIGAOLEQUANCHANGREXIAOLV。

黑龙江快乐十分  ZAIBUXUYAODUIKONGYUQIJINFENGJIARESHI,XITONGYIDIWENSHENGMEIQIFANGSHIYUNXING,XUANQUHESHIDEDIWENSHENGMEIQIJINSHUIWENDU,BAOZHENGHUANREQIDEZUIDIBIWENGAOYUSUANLUDIANWENDU,QUEBAOXITONGYUNXINGDEANQUANXING。DANGAIYUNXINGFANGSHICUNZAIZHEHUANREQIXIELOUYINGXIANGJIZUANQUANWENDINGYUNXINGDEWENTI。

黑龙江快乐十分  CHANGHAIQINGDENGREN[17]DUIYISHANGXITONGZUOCHULEGAIJIN,TICHULEYIZHONGDIANCHANGGUOLUYANQIYUREDESHENDUHUISHOULIYONGJIJIANPAIXITONG,QIXITONGTURUTU3SUOSHI。GAIXITONGBAOHANSANJIHUANREQI,DIYI、DIERJIHUANREQIBUZHIZAIKONGYUQIHECHUCHENQIZHIJIAN,DISANJIHUANREQIBUZHIZAIZENGYAFENGJIHETUOLIUTAZHIJIAN;DIYIJIHUANREQIHUISHOUDEYANQIYUREYONGYUJIARENINGJIESHUI,DIER、DISANJIHUANREQIHUISHOUDEYANQIYUREZUOWEINUANFENGQIDEREYUAN,YONGYUJIAREJINRUKONGYUQIDEKONGQI。GAIXITONGKEFULECHUANTONGDIWENSHENGMEIQIWUFASHENDUHUISHOUYANQIYUREDEQUEXIAN,KEYISHIXIANSHENDUHUISHOUYANQIYUREHEJIANGDIFENCHENPAIFANGNONGDUDEMUDE,BINGJUYOUYIDINGDEJIESHUIZUOYONG。GAIJISHUMUQIANYIZAIGUODIANFUZHOUDIANCHANG#2JIZUCHENGGONGYINGYONG,JIENENGXIAOGUOXIANZHU,XIANREGONGYUANTIGONGDEXINGNENGSHIYANJIEGUOBIAOMING,XITONGTOUYUNHOU,JIEYUEBIAOMEIHAO4.9g/(kwZh)。

低温省煤器

  4.XINXINGDIANZHANGUOLUYURELIYONGZONGHEYOUHUAXITONG

低温省煤器

黑龙江快乐十分  XINXINGDIANZHANGUOLUYURELIYONGZONGHEYOUHUAXITONGRUTU4SUOSHI[1,18-19]。GAIXITONGJIWEITU4ZHONGDEXUXIANBUFEN,YANQI-KONGQIHUANREXITONGFENGAOWENDUANHEDIWENDUANLIANGJIBUZHI,ZHONGJIANBUZHIYIJIDIWENSHENGMEIQI。SHENGMEIQIHOUDEYANQIZAIJINGGUOGAOWENKONGYUQIHOU,JINRUDIWENSHENGMEIQIJINXINGHUANRE,JIAREJIZUHUIREXITONGDEDIJIANINGJIESHUI;JINGGUODIWENSHENGMEIQIHUANREHOUDEYANQI,ZAIJINGGUOCHUCHENSHEBEIHOUJINRUDIWENKONGYUQIJINXINGHUANRE。

黑龙江快乐十分  LIANGJIKONGYUQIWEICHUANLIANBUZHIFANGSHI,CHANGWENDEKONGQIYICIJINGGUODIWENKONGYUQIHEGAOWENKONGYUQI,JIAREDAOJIZUSUOXUDEREFENGWENDU,WANCHENGKONGQIDEYURE。ZAIGAIYOUHUAXITONGZHONG,KAOLVLEYANQI-KONGQIHUANREXITONG,DUIGUOLUWEIBUSHOUREMIANDEYANQI、KONGQI、NINGJIESHUISANZHEJINXINGQUANJUXINGYOUHUA,SHIGUOLUWEIBUYANQIYURELIYONGZUIDAHUA,ZENGDALEJIZUYURELIYONGDEJIENENGXIAOGUO。

  GAIYOUHUAXITONGJUYOUYIXIATEDIAN:

黑龙江快乐十分  1)DIWENSHENGMEIQIBUZHIZAILIANGJIKONGYUQIZHIJIAN,YUNINGJIESHUIJINXINGHUANREDEYANQIWENDUJIAOGAO,KESHIYONGWENDUJIAOGAODENINGJIESHUIDUIYANQIYUREJINXINGHUISHOU,JIESHENGGENGGAODENGJIDEQIJICHOUQI,QIJIXIAOLVMINGXIANTIGAO,JIEYUEBIAOMEILIANGGENGGAO;ERQIEYOUYUYANQICEWENDUJIAOGAO,DIWENSHENGMEIQIYUNXINGWENDUJIAOGAO,BUCUNZAIHUANREQIDEDIWENFUSHIWENTI。

  2)GAIYOUHUAXITONGZHONG,KONGQIYUYANQIFENLIANGJIJINXINGHUANRE,CHUANREWENCHAJIANGDI,JIANSHAOLEKONGYUQIDECHUANRE㶲SUNSHI,TISHENGLEKONGYUQIDENENGLIANGLIYONGXIAOLV。

  DANGAIXITONGXUYAODUIKONGYUQIJIDIWENSHENGMEIQIJINXINGYOUHUASHEJI,DUIJIZUDEGAIZAOLIANGJIAODA,XUYAODEGAIZAOKONGJIANJIAODA,TOUZIJIAOGAO。

  5.JIELUN

黑龙江快乐十分  YOUYUGUONEIDERANMEITIAOJIANFUZA,MEIZHIDEWENDINGXINGJIAOCHA,ERQIEZAIYIJIZUCUNZAIGAIZAOKONGJIANYOUXIANDENGWENTI。YINCI,DUIYUXUYAOJINXINGWEIBUYANQIYUREHUISHOUDEXIANYIJIZU,KEYICAIYONGDIWENSHENGMEIQI、DIDIWENYANQICHULIJISHUHUOQIANZHISHIKONGYUQIYUDIWENSHENGMEIQIDEZUHEXITONGDUIYANQIYUREJINXINGHUISHOU,DANBIXUZONGHEKAOLVRANMEIZHILIANG、DIANCHANGYUNXINGSHUIPING、GAIZAOKONGJIAN、GAIZAOGONGCHENGLIANG、TOUZIJISHOUYIDENGYINSU。

  而对新建机组,则可采用低低温烟气处理技术、前置式空预器与低温省煤器的组合系统或新型电站锅炉余热利用综合优化系统。在机组的设计阶段,综合考虑燃煤条件、换热器的运行参数、投资与收益等因素,在实现烟气余热回收的同时,提高机组的热效率,减少粉尘、SOX等污染物的排放。

黑龙江快乐十分相关的文章: 低温省煤器

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