Katatu-zotsatira kugwa filimu evaporator

Mawu oyamba

Multi-effect falling film evaporator amatengera mfundo ya kugwa kwa mtundu wa filimu evaporation. Imatenthetsa osowa yothetsera kuwira
mfundo kuti chinyezi china chowiritsa; potero kufika ku cholinga cha condensation. Makinawa amatengera kupanga mosalekeza. Iwo ali ubwino lalikulu condensing chiŵerengero (1/5-1/10), yotakata kukula kwa viscidity (<400CP), zotsatira zabwino za kutengerapo kutentha ndi lalikulu processing mphamvu etc .. Ndi oyenera evaporating nkhani kutentha tcheru, apamwamba mu kusasinthasintha, lalikulu viscidity ndi dzimbiri, komanso ndi oyenera condensing chimanga potsetsereka insodium ndi mapiko a starch mowa wonyezimira wa machulukidwe amphamvu ndi machulukidwe a maolivi a maolivi a maolivi ndi maolivi a maolivi. glutamate mowa muzakudya, mkaka, shuga ndi lees kusefa.

Chigawochi chimakhala ndi mphamvu yokulirapo ya kutentha, kotero kusiyana kwa kutentha kwa kutentha kumakhala kochepa. Ikhoza kusonkhana kuti
wapawiri-zotsatira, patatu-zotsatira, zinayi zotsatira kapena zisanu zotsatira evaporating dongosolo malinga ndi katundu wa evaporating zakuthupi ndi zolinga zosiyanasiyana evaporating, komanso angagwiritse ntchito zinyalala nthunzi pamwamba pa chitoliro mtolo kapena chimbale mtundu kuyanika makina ndi zina otsika kutentha gwero (monga coagulated madzi nthunzi) kuchita ngati zinyalala kutentha evaporator kwambiri ndi kuchepetsa mphamvu nthunzi kuwononga mphamvu. Ngati nthunzi yotentha yotayidwa iperekedwa mokwanira, sifunika kukhala ndi nthunzi yamoyo, motero imapindula kwambiri pazachuma.

Kapangidwe ndi kachitidwe

Evaporator yokhala ndi mphamvu imodzi imapangidwa ndi chipinda chimodzi chotenthetsera ndi chipinda chimodzi cholekanitsa chamadzi ndi nthunzi. Chigawo ichi cha evaporator chimapangidwa ndi ma evaporator awiri kapena kupitilira apo, pampu yotenthetsera, mapampu osiyanasiyana odyetsera ndi otulutsa, chipangizo cha vacuum, chida choyesera, mapaipi ndi valavu. Chipinda chotenthetsera nthawi zambiri chimapangidwa ndi kutumphuka, chitoliro cholumikizira chitoliro ndi chitoliro cholumikizira. Ndipo chipinda cholekanitsa cha nthunzi-zamadzimadzi chimapangidwa ndi kutumphuka ndi chochotsera thovu.

a.Makinawa amadyetsa zinthu mosalekeza kunsi kwa mtsinje kapena kumtunda kapena mosakanikirana. Ngati kudyetsa kunsi kwa mtsinje, njira yoyendetsera njira yothetsera vutoli ndi yofanana ndi ya nthunzi panthawi yotentha. Zopangira zimatenthedwa mpaka kuwira potenthetsa ndi pre-heater kenako zimafika poyambira. Monga momwe madzi owiritsira amadzimadzi amachitira kale ndi apamwamba kuposa momwe amachitira potsirizira pake, zinthu zidzatenthedwa ndi kusungunula zokhazokha pokhapokha zikalowa ku zotsatira zomaliza, panthawiyi, monga madzi osungunuka omwe analipo kale amatha kusungunuka pambuyo pofika kumapeto, mtsinje wachiwiri udzapangidwanso. Ngati kudyetsa kumtunda, zopangira amadyetsedwa wachitatu kwenikweni. Zomwe zimayambira zimatulutsidwa kudzera muzochitika zachiwiri. Podyetsa zosakaniza zosakaniza, zopangira zimadyetsedwa ndi zinthu zachitatu ndipo zimatulutsidwa ndi zotsatira zachiwiri kupyolera muzoyamba.

b.Kutengera zotsatira za kuponderezedwa kwa kutentha kwa kutentha, mpweya wotulutsa mpweya wotentha umapangitsa kuti mpweya wina wachiwiri ukhale wabwino kwambiri komanso ubwerere ku chipinda choyamba chotenthetsera kuti ukhale ngati kutentha kwa nthunzi, motero, digiri yachuma yopangira nthunzi imakhala yabwino.

c.The static yogawa gulu imapanga mawonekedwe amtundu wa filimu ngati kuyenda mofanana ndi bwino pambuyo polowa mu chitoliro chodyera kuchokera pamwamba pa chipinda chotenthetsera, kotero kuti coefficient of heat transfer imakhala bwino kwambiri; ndi kutaya kutentha chifukwa cha static-pressure mutu akhoza kuchotsedwa; Choncho, zotsatira kutentha kusiyana ndi lalikulu kwambiri mu chikhalidwe cha yemweyo kugwa filimu evaporator.

d.Monga yankho limakhala kwakanthawi kochepa mu evaporator, ndiloyenera kwambiri kutulutsa zinthu zomwe sizimva kutentha.