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 wiritsani; potero kufika ku cholinga cha condensation. Makinawa amatengera kupanga mosalekeza. Iwo ali ubwino waukulu condensing chiŵerengero (1/5-1/10), yotakata kukula kwa viscidity (<400CP), zotsatira zabwino za kutengerapo kutentha ndi lalikulu processing mphamvu etc. Ndi oyenera evaporating zinthu zimene ndi kutentha tcheru , apamwamba mu kusasinthasintha, lalikulu mu viscidity ndi dzimbiri, ndi oyenera condensing chimanga motsetsereka mowa ndi chimera fumbi makampani wowuma, manyuchi ndi monosodium glutamate mowa mu zakudya, mkaka, shuga ndi lees kusefera.

Chigawochi chimakhala ndi mphamvu yokulirapo ya kutentha, kotero kusiyana kwa kutentha kwa kutentha kumakhala kochepa. Ikhoza kusonkhana kuti
wapawiri, patatu zotsatira, zinayi kapena zisanu zotsatira evaporating dongosolo malinga ndi katundu wa evaporating zinthu ndi zolinga zosiyanasiyana nthunzi, komanso angagwiritse ntchito zinyalala nthunzi pamwamba pa chitoliro mtolo kapena chimbale zowumitsa makina ndi gwero lina lotsika kutentha (monga coagulated madzi nthunzi) kukhala ngati zinyalala kutentha evaporator, amene amachepetsa nthunzi kwambiri ndi kufika zotsatira za kupulumutsa 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 zokha pokhapokha zitalowa ku zotsatira zomaliza, panthawiyi, monga madzi osungunuka omwe analipo kale amatha kusungunuka pambuyo pofika kumapeto. , mtsinje wachiwiri udzapangidwa kwambiri. 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 mphamvu ya kuponderezana kwa kutentha kwa kutentha, mpweya wotulutsa mpweya wotentha umapangitsa kuti nthunzi ina yachiwiri iyambe kusintha kutentha kwake ndikubwerera ku chipinda choyamba chotenthetsera kuti chikhale ngati kutentha kwa nthunzi, motero, digiri yachuma yopangira nthunzi. ndi bwino.

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 mkhalidwe wa yemweyo kugwa filimu evaporator.

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