玖洲彩票开户

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流化床干燥設備的研究進展

作者:久泰機械 | 發布時間:2018-04-11

玖洲彩票开户   LIUHUAJISHUQIYUANYU1921NIAN,YINGYONGYUGANZAOGONGYEHUADASHENGCHANSHI1948NIANMEIGUOJIANLIDEDUOER—AOLIEFUGUTILIUHUAZHUANGZHI,ERWOGUOZHIDAO1958NIANHOUCAIKAISHIFAZHANCIXIANGJISHU。LIUHUACHUANGGANZAOGUOCHENGZHONGSANZHUANGWULIAOBEIZHIYUKONGBANSHANG,XIABUSHUSONGQITI,SHIWULIAOKELICHENGXUANFUZHUANGTAI,YOURUYETIFEITENGYIYANG,SHIDEWULIAOKELIYUQITICHONGFENJIECHU,JINXINGKUAISUDERECHUANDIYUSHUIFENCHUANDI。LIUHUAGANZAOYOUYUJUYOUCHUANREXIAOGUOLIANGHAO、WENDUFENBUJUNYUN、CAOZUOXINGSHIDUOYANG、WULIAOTINGLIUSHIJIANKEDIAO、TOUZIFEIYONGDILIANHEWEIXIUGONGZUOLIANGJIAOXIAODENGYOUDIAN,DEDAOLEGUANGFANDEFAZHANHEYINGYONG。

1 LIUHUACHUANGGANZAOSHEBEIDEFENLEI

  流化床干燥設備在不到100年的時間里,經過科研人員的不斷改進和創新,得到了長足的發展和廣泛的應用。其種類很多,根據待干燥物料性質的不同,所采用的流化床也不同,按其結構大致可分為:單層和多層圓筒型流化型、臥式多室流化型、攪拌流化型、振動流化型、離心式流化型、脈沖流化型等類型。
 
玖洲彩票开户 1.1 單層和多層圓筒型流化床

玖洲彩票开户   YINGYONGDELIUHUACHUANGWEIDANCENGYUANTONGXING,QICAILIAOWEIPUTONGTANGANGNEITUHUANYANGFENQUANFANGFUCENG,QITIFENBUBANSHIDUOKONGSHAIBAN,BANSHANGXIAOKONGBANJING1.5 mm,ZHENGLIUJIAOXINGPAILIE。

  整個干燥過程為:濕物料由皮帶輸送機運送到拋料加料機上,然后均勻地拋入流化床內,與熱空氣充分接觸而被干燥,干燥后的物料由溢流口連續溢出。空氣進入鼓風機、加熱器后進入篩板底部,向上穿過篩板,使床層內濕物料流化起來形成流化層。尾氣進入旋風分離器組,將所夾帶的細粉除下,然后由排氣機排到大氣中。此干燥器操作簡單、勞動強度低、勞動條件好、運轉周期長。
 
  但是由于單層圓筒流化床直徑較小,物料停留時間較長,干燥后所得產品濕度不均勻。因此發展了多層流化床,該流化床不僅可以提高效率,更重要的是能夠得到較為均勻的停留分布時間。為了對物料進行內擴散控制,多層流化床還先后經歷了溢流管式、下流管式和穿流板式3個階段。多層流化床的物料干燥程度均勻,干燥質量易于控制。熱效率較高,適用于降速干燥階段較長的物料以及濕含量較高(水分含量>14%)的物料的干燥。

1.2 WOSHIDUOSHILIUHUACHUANG

  YOUYUDUOCENGLIUHUACHUANGHUANSHICUNZAICAOZUOKUNNAN、CHUANGCENGZULIDAHEJIEGOUFUZADENGQUEDIAN,WEIKEFUZHEXIEQUEDIAN,20SHIJI60NIANDAIMO70NIANDAICHUFAZHANLEYIZHONGWOSHIDUOSHILIUHUACHUANG。GAISHEBEIJIEGOUJIANDAN、CAOZUOFANGBIAN,SHIYONGYUGEZHONGNANGANZAODEFENLIZHUANGWUHEREMINXINGWULIAODEGANZAO。KEYISHUO,WOSHIDUOSHILIUHUACHUANGGANZAOQIXIANGDANGYUDUOGEFANGXINGJIEMIANLIUHUACHUANGCHUANLIANXITONG。

玖洲彩票开户   QIZHUYAOTEDIAN:

  (1)ZAIXIANGLINGESHIJIANANZHUANGDANGBAN,CONGERKEZHIDEJUNYUNGANZAODECHANPIN,GAISHANLEWULIAOTINGLIUSHIJIANDEFENBU;

玖洲彩票开户   (2)WULIAODELENGQUEHEGANZAOKEJIEHEZAITONGYISHEBEIZHONGJINXING,JIANHUALELIUCHENGHESHEBEI;

  (3)YOUYUFENGECHENGDUOSHI,KEYIDIAOJIEGESHIDEKONGQILIANG,ZENGJIADEDANGBANKEBIMIANWULIAOZOUDUANLUPAICHU。

  GAISHEBEIZAIZHIYAOGONGYEZHONGTUIGUANGJIAOKUAI,MUQIANGUONEIYOUJISHIGEGONGCHANGYONGCISHEBEILAIGANZAOGEZHONGPIANJIKELIYAOWU、FENLIZHUANGWULIAOYIJIPIANZHUANGWULIAO。RUGUOZAICAOZUOSHANGDUIGESHIDEFENGLIANG、QIWENJIAYIDIAOJIE,HUOJIANGJISHIDEREKONGQIERCILIYONG,HUOZAICHUANGNEITIANJIANEIJIAREQIDENG,HUANKETIGAOREXIAOLV。

1.3 JIAOBANLIUHUACHUANG

  WEILESHIMOUXIESHIKELIWULIAOHUOYININGJUCHENGTUANDEWULIAOYINENGCAIYONGLIUHUAGANZAOJISHU,YANJIURENYUANZAIJIALIAOKOUFUJINZHUANGBEICHUANGNEIJIAOBANXIEPIAN,SHICHENGTUANZHUANGHUOKUAIZHUANGDEWULIAOJISHIDASUI,YILIYUXINGCHENGLIUHUA,ZHEZHONGZHUANGBEIYOUJIAOBANQIDELIUHUACHUANGCHENGWEIJIAOBANLIUHUACHUANG。

玖洲彩票开户   QIYOUDIANZAIYU:

玖洲彩票开户   (1)SHIHEYUSHIHANLIANGJIAODA、ZAIREQILIUZHONGBUYIFENSANDEWULIAOHUOZHEKENENGJIEKUAIDEWULIAODEGANZAO;

  (2)KEYIBIMIANGOULIU、TENGYONGHESICHUANGXIANXIANG,HUODEJUNYUNDELIUHUAZHUANGTAI,TIGAOREZHICHUANDIQIANGDU。JINNIANLAIJIAOBANLIUHUACHUANGZAIZHIYAOGONGYESHANGDEDAOLEXIANGDANGGUANGFANDEYINGYONG,QICHANGZUOWEIZHIYAOGUOCHENGDEHOUXUGONGYIDEGANZAOZHUANGZHI,YIJIANHUASHEBEIJIGONGYI,JIANGDICHENGBEN。

玖洲彩票开户 1.4 ZHENDONGLIUHUACHUANG

  隨著多級干燥的發展,振動流化床(vibrate fluidized bed,VFB)得到應用,其基本結構與普通流化床相似,是一種將機械振動加于流化床中的改良產品。物料依靠機械振動和穿孔氣流雙重作用流化,并在振動作用下向前作活塞形式的移動,利用對流、傳導、輻射向料層供給熱量,即可達到干燥的目的。
 
  振動流化床由于物料的輸送是由振動來完成的,供給的熱風只是用來傳熱和傳質,因此可以明顯地降低能量消耗。另外,由于床層的強烈振動,傳熱和傳質的阻力減小,提高了振動流化床的干燥速率,同時使不易流化或流化時易產生大量夾帶的塊團性或高分散物料也能順利干燥,克服了普通流化床易產生返混、溝流、粘壁等現象。

玖洲彩票开户 1.5 LIXINSHILIUHUACHUANG

玖洲彩票开户   LIXINSHILIUHUACHUANGSHIZAILIXINLICHANGZHONGJINXINGLIUHUAGANZAODEYIZHONGXINXINGGANZAOSHEBEI,QIYUANLISHIZAIJIXIEZHUANDONGZAOCHENGDELIXINLICHANGZUOYONGXIASHILIZHUANGWULIAOFENBUZAISIWANGFUGAIDEYUANTONGXINGDUOKONGBISHANG,REQILIUCHUANGUODUOKONGBISHIZHILIUHUAGANZAO。YOUYULIXINLICHANGDECUNZAILIXINJIASUDUKEYISHIZHONGLIJIASUDUDEJIBEIDAOJISHIBEI,YINCIYUPUTONGZHONGLILIUHUACHUANGXIANGBIJIAO,QIANGHUALESHIFENZAIWULIAONEIBUDEQIANYIGUOCHENG,GANZAOSHIJIANDUAN,CHUANRECHUANZHISULVGAO,NENGGOUYOUXIAODIYIZHIQIPAODESHENGCHENGJIWULIAODEJIADAI,DUIYUZAIZHONGLILIUHUACHUANGZHONGNANYIGANZAODEDIMIDU、REMINXING、YIZHANJIEDEGUTIWULIAODOUKEYIYOUXIAODIGANZAO。

玖洲彩票开户 1.6 MOCHONGLIUHUACHUANG

  ZHENDUIYIXIEBUYILIUDONGDEWULIAOJIGANZAOWENDUBUYUNXUCHAOGUO50~80 ℃DEJIEJINGYAOWU,FAZHANLEMOCHONGSHILIUHUACHUANG。MOCHONGLIUHUACHUANGGAIBIANLECHUANTONGLIUHUACHUANGDEHENGDINGSONGFENGWEIZHOUQIXINGSONGFENG,TONGGUODIAOJIEQILIUDEMOCHONGPINLVHUOMOCHONGQILIUDAOTONGLV,SHITONGGUOKONGBANDEQITILIULIANGHUOLIUHUAQUFASHENGZHOUQIXINGBIANHUA,DUIWULIAOJINXINGGANZAO。

玖洲彩票开户   QIZHUYAOJIEGOUTEDIANSHIZAIGANZAOSHIDIBUDEZHOUWEIZHUANGYOUJIGENREKONGQIJINKOUGUAN,ZAIMEIGENREKONGQIGUANSHANGZHUANGYOUMOCHONGFA,TAMENANYIDINGDEPINLVHECIXUKAIQI,KAIQISHIJIANYUCHUANGCENGHOUDUHEWULIAOXINGNENGYOUGUAN,DANGQITITURANYINJINSHI,ZAIDUANSHIJIANNEIXINGCHENGYIGEMOCHONG,SHILIZIJULIELIUHUA,CUSHIWULIAOZHIJIANJINXINGQIANGLIEDECHUANREYUCHUANZHI,DANGFAMENGUANBISHI,CHUANGCENGDELIUHUAZHUANGTAIZHUJIANXIAOSHI,ZEWULIAOCHUYUJINGZHIZHUANGTAI,CISHIRENGTONGRUBUFENQITITONGGUOCHUANGCENG,YIBIANXIAYIGEMOCHONGNENGYOUXIAODIZAICHUANGZHONGCHUANDI。

玖洲彩票开户   QIYOUDIANZAIYU:CHUANREXISHUGAO,GANZAOSHIJIANDUAN,KONGQIHAOLIANGJIANSHAO,DIANNENGHAOLIANGDI。MOCHONGLIUHUACHUANGNENGYOUXIAOKEFUGOULIU、SIQUHEJUBUGUOREDENGCHUANTONGLIUHUACHUANGCHANGJIANDEBIDUAN,YINERKEYONGYUCHULINIANXINGQIANG、YIJIETUANHEREMINXINGWULIAO,RUSIHUANSULEIDEKANGSHENGSU。

玖洲彩票开户 1.7 DUOXINGLIZILIUHUACHUANG

玖洲彩票开户   DUOXINGLIZILIUHUACHUANGGANZAOQIJUYOUJIANGWULIAOZHENGFA、JIEJING、GANZAOHEFENSUIZAITONGYISHEBEIZHONGWANCHENGDETEDIAN。CIGANZAOQIZHONGYUXIANZHUANGYOUZHIJINGWEI1~2 mmDEBOLIZHU,QIZAIREKONGQIDEZUOYONGXIACHENGLIUHUAZHUANGTAI,WULIAOJINRULIUHUACHUANGNEI,ZAIBOLIZHUXIANGHUQIUMODEZUOYONGXIA,XUNSUBEIFENSUI、GANZAO。MUQIAN,CILEILIUHUACHUANGGANZAOQIZAIZHIYAOGONGYEZHONGDEYINGYONGJIAOSHAO。

2 LIUHUACHUANGGANZAOSHEBEICUNZAIDEWENTIYUJIEJUEFANGFA

  JINGGUOGONGCHENGJISHURENYUANDEGONGTONGNULI,JINNIANLAIWOGUODELIUHUACHUANGGANZAOSHEBEIYOULECHANGZUDEJINBU。MUQIANGUONEICHANGYONGDELIUHUACHUANGGANZAOQIYOU:NEIZANGREGUANSHILIUHUACHUANGGANZAOJI、ZLGZHENDONGLIUHUACHUANGGANZAOJI、FEITENGLIUHUACHUANGGANZAOJIDENG。LIUHUACHUANGGANZAOJIDEJIEGOU、XINGNENGDOUYOUMINGXIANGAISHAN,ZHILIANGYEZAIBUDUANTIGAO,DANHUANCUNZAIZHUYIXIEWENTI。

2.1 RENENGLIYONGDEBUCHONGFEN

  LIUHUACHUANGGANZAOSHEBEICUNZAIRENENGLIYONGBUCHONGFENDEWENTI,DAOZHIGANZAOXIAOLVBULIXIANG,NENGHAOZENGJIA。RUGUOZAILIUHUAGANZAOGUOCHENGZHONGWULIAOHEREKONGQIJIECHUBUJINMI,JIUCUNZAIREJIAOHUANBUWANQUANDEWENTI,BUDANJIANGDIGANZAOXIAOLV,ERQIEZENGJIANENGHAO。

  DEGUOGEAJITUANDEXIASHUGONGSI[1]ZHUANMENSHEJILESHIJINQILIANGGENGJIAJUNYUNYUPINGWENDESHAIBAN,GAISHAIBANKEYISHILIUHUAGANZAOGUOCHENGZHONGREJIAOHUANGENGJIACHONGFENHEHELI,BINGQIEJIANGDILEJIAREKONGQICHANSHENGDENENGHAO,KEDAFUTISHENGJINGJIXIAOYI。RUISHIDESUERSHOUGONGSIHERIBENNAILIANGJIXIE[2]ZHIZAODENEIZANGREGUANSHILIUHUACHUANGGANZAOJI,GAIBIANLEYIWANGLIUHUACHUANGRELIANGQUANBUYOUREFENGDAIRUDEFANGFA,TAJIANGGUANSHIREJIAOHUANQICHENJINZAILIUTAIHUAGANZAOWULIAOZHONG,WULIAOTUOSHUISUOXURELIANGFENBIEYOUMAIGUANREJIAOHUANQIHELIUHUAYONGREKONGQITIGONG,YIJIAOXIAODEFENGLIANGMANZUWULIAOLIUHUAGANZAODEYAOQIU,YOUYUBUFENRELIANGLAIZIGUANNEIREJIEZHIDECHUANDAOCHUANRE,YINCIDADATIGAOLEREXIAOLV,ERREJIEZHIYIBANWEIZHENGQI、DAOREYOUDENG。

玖洲彩票开户   CIWAIWOMENHUANKEYICAIYONGXINDEJIAREJISHUHUOXINNENGYUANLAITIGAOSHEBEIDEREXIAOLV。RUZAICHUANGDICENGMAIZHIHUANREGUAN,LIYONGYETIQIANREJINXINGPENWUREJIAOHUAN,CAIYONGWEIBOJIAREDENGXINGSHIJINYIBUTIGAOLIUHUACHUANGGANZAOSHEBEIDEREXIAOLV,CONGERJIANGDINENGYUANSUNHAO,DADAOJINGJIHUANBAODEMUDE。

2.2 BEIGANZAOWULIAOSHIDUDEZAIXIANJIANCE

玖洲彩票开户   LIUHUACHUANGGANZAOGUOCHENGZHONGHUANCUNZAIWUFAZAIXIANJIANCEBEIGANZAOWULIAOSHIDUDEWENTI,RUGUONENGGOUZAIGANZAOGUOCHENGZHONGZAIXIANJIANCEWULIAODESHIDU,BIANKEGENJUSHIJIQINGKUANGDIAOZHENGCANSHU,TIGAOGANZAODEXIAOLV。

  K.Sepp?l? [3]DENGRENSHEJILEYIZHONGZAIXIANJIANCELIUHUACHUANGGANZAOSHIWULIAOSHIDUDEZHUANGZHI,GAIZHUANGZHICAIYONGSHUANGBISEMINXITONG,TONGGUOCELIANGWULIAODEDIANDAOLVLAIJIANCEWULIAODESHIDU,SHIZHENGGEGANZAOGUOCHENGCHUYUKEKONGZHIZHUANGTAI。

  CIWAIHUANYOULIYONGZHONGLIANGGAIBIAN、HONGWAISAOMIAODENGJISHUDUIBEIGANZAODEWULIAOJINXINGZAIXIANSHIDUJIANCEDEBAODAO[4],ZHEXIEFANGSHISHILIUHUACHUANGDEZHENGGEGANZAOGUOCHENGKEYIJIAYISHISHIDIAOKONG。

玖洲彩票开户 2.3 GANZAOJIEGUODECHAYIXING

  MUQIANLIUHUACHUANGGANZAOZHONGPUBIANCUNZAIGANZAOJIEGUOCHAYIJIAODADEWENTI:

  (1)TONGYIZHONGWULIAO、BUTONGTOULIAOLIANGDEGANZAOJIEGUOCUNZAICHAYI;

  (2)BUTONGZHONGLEIWULIAO、XIANGTONGTOULIAOLIANGDEGANZAOJIEGUOCUNZAIJIAODACHAYI。

  因此,針對這兩個問題,一般都是對流化床的結構進行改進,使其設計更為合理,從而增加干燥物料的種類,而且可以提高干燥效率,降低干燥結果的差異性。
 
  德國GEA集團[5]針對同一種物料、不同投料量干燥結果不同的問題,設計有適用于較小量干燥物料的兩層圓筒型流化床干燥器、適用于中等規模干燥量的四層串聯流化床干燥器以及適用于大規模干燥量的矩形三層流化床干燥器。針對不同種類物料、相同投料量干燥結果不同的問題,設計有專門適用于干燥易團聚的固體物料的流化干燥器和適用于液體物料干燥的流化干燥器。

  德國的Glatt公司[6]針對同種物料、不同投料量干燥結果不同的問題,設計有間歇型流化床和連續型流化床,間歇型生產量為2 kg/h~1.5 t/h,連續型生產量為20 kg/h~5 t/h,此設計可以有效地解決同種物料、不同投料量干燥結果不同的問題。
 
玖洲彩票开户 2.4 特殊物料的干燥穩定性

熱敏感物料、氧敏感的物料以及含溶劑易燃物料的干燥條件要求較高,干燥條件不合理  會導致被干燥物料的降解、變質。美國的Bepex公司[7]設計的固定式流化床干燥器是一種較新的適用于熱敏感物料、氧敏感的物料和含溶劑易燃物料干燥的流化干燥設備。此流化床干燥器中具有多個區域,可在同一個裝置中進行加熱和冷卻,每個區域都可以對溫度、露點和流化速度進行獨立控制,通過調節每個區域的圍堰高度,物料在干燥器中的停留時間可相差4倍。由于采用較低的蒸汽壓,熱敏感物料可在低于沸點的溫度下進行干燥,并且加入間接傳熱表面,提高干燥能力。
 
  此外,該設備使用了能夠將惰性氣體進行回收的封閉循環流化床系統,可以處理對氧敏感的物料和含溶劑易燃物料。

2.5 LENGQUEXITONG

玖洲彩票开户   BUFENLIUHUACHUANGGANZAOSHEBEIQUESHAOLENGQUEXITONG,YINCILENGQUEGUOCHENGYIBANJIAOCHANG。MUQIAN,GUONEIWAIDEYANJIURENYUANHESHENGCHANSHANGZAISHEJIHEZHIZAOLIUHUACHUANGSHI,DOUKAOLVSHEJIBINGCAIYONGGENGWEIHELIHEGAOXIAODELENGQUEZHUANGZHI,SHIGANZAOHOUDEWULIAONENGXUNSULENGQUEJIANGWEN,DADAOJIANHUASHENGCHANGUOCHENG,HUOZHIJIEBAOZHUANGDEMUDE。

3 ZHANWANG

玖洲彩票开户   MUQIAN,GUOWAIGONGSISHENGCHANDELIUHUACHUANGGANZAOSHEBEIYOUYUCAIYONGLEXIANJINDEJISHUERSHIQISHENGCHANZHILIANGDEDAOLEJIAOHAODEBAOZHENG,WOGUOYOUYUQIBUWAN,LIUHUACHUANGGANZAOSHEBEIYUGUOJIXIANJINSHUIPINGXIANGBIYOUYIDINGDECHAJU,DANSUIZHUWOGUOZHIYAOGONGYEDEFAZHAN,ZAIXUEXIGUOWAIXIANJINJISHUHESHIJIANJINGYANDEJICHUSHANG,XUANZETEDINGDETUPODIAN,JIADAZIZHUCHUANGXINLIDU,YIDINGKEYISUOXIAOYUGUOJIXIANJINSHUIPINGDECHAJU

玖洲彩票开户  

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