Pulp ua noj yog hais txog cov txheej txheem pulping uas papermaking raw cov ntaub ntawv thiab cov cawv ua noj yog muab tso rau hauv lub digester thiab tom qab ntawd rhuab los ntawm chav kom tshem tawm cov tsis yog - cellulose ib feem ntawm cov ntaub ntawv fibrous. Cov dej cawv dub boiled hauv papermaking muaj cov nqi calorific thiab zoo flammability, thiab yog ib qho tseem ceeb rau tus kheej - tsim lub zog hauv kev lag luam papermaking. Prepler cov khoom siv hluav taws xob tuaj yeem siv los ua cov khoom siv hluav taws xob tseem ceeb -txuag cov khoom siv hauv cov txheej txheem dej cawv dub, thiab yog ib qho tseem ceeb rau kev txhim kho kev siv hluav taws xob thiab kev tiv thaiv ib puag ncig hauv cov ntawv zeb.
Thaum tshav kub kub exchangers yog ib qho tseem ceeb ntawm cov ntaub so ntswg thiab ntawv mills. Nrog kev pab los ntawm cov khoom siv hluav taws xob sib hloov, cov ntawv zeb tau txais txiaj ntsig ntau ntawm kev txuag hluav taws xob lossis kev tiv thaiv ib puag ncig.
Muaj ntau cov txheej txheem hauv cov ntawv mills uas tuaj yeem siv cov khoom siv hluav taws xob sib hloov, tshwj xeeb tshaj yog cov phaj kub hloov pauv, uas nyob hauv ib qho chaw me me, muaj cov cua sov rov qab zoo, kev kho yooj yim, thiab tus nqi qis.
Maybe many users have a need for heat exchangers, but they don't know that there is this equipment. In fact, in the final analysis, the role of the heat exchanger is nothing more than these points: heating, preheating, cooling, and condensation. As long as there are needs in these aspects, heat exchangers can be used. As for whether to use a plate heat exchanger or a tube heat exchanger, you can consult our Kang Jinghui heat exchanger manufacturer, and we will choose your suitable heat exchanger model according to your working conditions. Today, I will tell you about the application principle of the plate heat exchanger for the application in the paper industry: Cooking is the process of pulping paper making raw materials and cooking liquid into the digester, and steam heating to remove the non-inflammation in the fiber raw materials. Cellulose part. An energy consumption process of the cooking process. At the end of the cooking, recovering the large amount of low-grade heat generated by the slurry sprayed by the digester for use is a process of comprehensive utilization of energy and resources.
Cov slurry tso tawm hauv qab ntawm lub lauj kaub ua noj yog txau rau sab sauv ntawm lub tiaj tus - hauv qab lub lauj kaub. Vim nws txoj kev poob siab heev. Cov dej hauv cov slurry flashes ua kom cov pa qias neeg. Cov pa qias neeg dhau los ntawm sab saum toj ntawm lub lauj kaub tshuaj tsuag thiab nkag mus rau lub kiv cua cais. Nyob rau hauv hydrocyclone, cov slurry thiab lwm yam impurities nqa los ntawm lub chav yog sib cais, thiab xa rov qab mus rau lub tiaj tus - hauv qab lub lauj kaub los ntawm cov xa rov qab yeeb nkab nyob rau hauv qab ntawm lub separator. Cov chav los ntawm sab saum toj ntawm lub taub hau sib cais nkag mus rau hauv lub dav hlau condenser 3. Nyob rau tib lub sij hawm, cov chav thiab cua kub tawm ntawm lub chav tso tawm thaum lub sij hawm ua noj ua haus nkag mus rau lub dav hlau condenser.
Nyob rau hauv lub dav hlau condenser, 30-40 degree polluted dej kub pressurized los ntawm cov pa phem lub dav hlau twj tso kua mis yog sprayed los ntawm sab saum toj ntawm lub dav hlau condenser. Tom qab kev sib pauv hluav taws xob ncaj qha nrog cov dej phwj tuaj, nws dhau los ua dej phwj dej kub ntawm 90 degree thiab nkag mus rau hauv cov dej phwj dej kub. Tom qab cov dej phwj dej kub dhau los ntawm sab saud ntawm cov dej phwj dej kub, cov seem slurry thiab lwm cov ntawv xov xwm hauv cov dej phwj dej kub yog tshem tawm los ntawm cov dej phwj dej kub lim. Nws ntws los ntawm lub tank nruab nrab. Tom qab ntawd cov dej phwj dej kub yog siv los xa cov dej phwj dej kub mus rau lub phaj kub exchanger los pauv cov cua sov nrog dej txias. Tom qab kev sib pauv cua sov, qhov kub ntawm cov dej phwj tuaj thiab dej kub poob mus rau 35 degree thiab rov qab mus rau cov dej txias uas siv los ua lub dav hlau condenser. Cov dej txias los ntawm qhov chaw ntxhua khaub ncaws muaj dej kub txog li 25 degree, thiab feem ntau nws nkag mus rau hauv lub phaj kub exchanger thiab sib pauv cua sov nrog cov dej phwj tuaj thiab dej kub, tshwj tsis yog rau ib feem ntawm cov dej txias siv los ua lub dav hlau condenser. Tom qab qhov kub nce mus txog 70 degree, nws tau muab tso rau hauv lub tank dej kub, thiab cov dej kub no yog thaum kawg xa mus rau qhov chaw ntxhua khaub ncaws los ntawm lub twj tso kua mis kub rau kev ntxuav pulp. Daim ntawv thov ntawm phaj kub exchangers nyob rau hauv daim ntawv kev lag luam tsis txwv rau qhov no, tsuav yog nws yog siv rau cua sov, preheating, txias, thiab condensation ntawm vapor- kua thiab kua-kua, phaj kub exchangers yuav siv tau. .
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