1. Nyias zaj duab xis drying system txheej txheem ntws
Sludge nruab nrab txheej txheem: ntub sludge txais rau hauv + sludge tus me nyuam twj tso kua mis + nyias zaj duab xis tshuab ziab khaub ncaws + semi-qhuav sludge tso zis khoom + linear dryer + khoom txias.
Cov pa roj pa nruab nrab txheej txheem: evaporation chav (sib tov sib xyaw) + khib nyiab lub thawv + condenser + pos huab tshem tawm + induced cua ntsawj ntshab + deodorization ntaus ntawv.
Cov sludge nyob rau hauv cov sludge txais bin yog ncaj qha xa mus rau nyias zaj duab xis tshuab ziab khaub ncaws los ntawm sludge ntsia hlau twj tso kua mis rau kev kho kom qhuav. Lub sludge inlet ntawm nyias zaj duab xis tshuab ziab khaub ncaws yog nruab nrog lub pneumatic riam rooj vag valve, uas yog interlocked nrog cov logic tswj tsis tau ntawm lub twj tso kua mis noj, noj cov ntsia hlau, kev ruaj ntseg tiv thaiv ntawm nyias zaj duab xis tshuab ziab khaub ncaws thiab lwm yam khoom thiab nrhiav kom tau cov cuab yeej.
Lub tshuab ziab khaub ncaws nyias lub cev qauv, qhov hnyav ntawm ib lub tshuab yog 33 000 kg, qhov loj ntawm cov khoom siv yog Φ1 800 × 15 180, kab rov tav layout thiab installation, cov sludge nkag mus rau nyias zaj duab xis tshuab ziab khaub ncaws yog sib npaug ntawm qhov kub. phab ntsa ntawm lub tshuab ziab khaub ncaws los ntawm rotor thaum lub sij hawm kev sib hloov, thaum lub paddle ntawm lub rotor pheej rov sib tov cov sludge rau ntawm phab ntsa kub, Thiab rau pem hauv ntej mus rau lub qhov hluav taws xob ntawm cov sludge, cov dej nyob rau hauv lub sludge yog evaporated nyob rau hauv tus txheej txheem. . Lub semi-qhuav sludge hais tom qab ziab los ntawm txheej nyias yog thauj mus rau lub tshuab ziab khaub ncaws los ntawm cov sludge conveyor (ua haujlwm raws li qhov xav tau ntawm cov ntsiab lus noo noo ntawm cov khoom sludge), thiab tom qab ntawd nkag mus rau hauv sludge txias. Cov khoom sludge yog txias los ntawm huab cua ntws hauv lub txias txias thiab cov dej txias uas ntws hauv lub plhaub thiab tig ncej. Cov ntsiab lus noo noo yog txo los ntawm 80% mus rau 35% (cov sludge noo noo ntawm 35% yog cov txheej txheem tswj kev txwv ntawm ib qho khoom siv ntawm lub tshuab ziab khaub ncaws nyias).
Cov pa roj tso tawm los ntawm lub tshuab ziab khaub ncaws nyias nyias muaj cov dej vapor, plua plav thiab qee cov roj tsis hloov pauv (tsuas yog H2S thiab NH3). Yog tias tso tawm ncaj qha, nws yuav ua rau muaj kev ua qias tuaj rau ib puag ncig. Yog li ntawd, qhov project no txiav txim siab cov cab kuj gas sau system thiab condenser thiab pos huab Remover kom tshem tawm cov plua plav thiab dej vapor nyob rau hauv lub tso pa roj, uas yog opposite rau cov kev taw qhia ntawm sludge zog nyob rau hauv lub rotating lub tog raj kheej. Lub qhov hluav taws xob tso pa tawm saum cov sludge nkag mus rau hauv lub condenser, thiab cov dej txias los ntawm cov pa tawm evaporation. Los ntawm kev sib pauv cua sov tsis ncaj, cov tshuaj tsuag dej yog tshem tawm los ntawm cov phaj kub exchanger thiab txias ntauwd, thiaj li txuag dej thiab txo cov dej phwj tuaj. Cov roj uas tsis yog-condensible (me me ntawm chav, N2, huab cua thiab sludge volatiles) dhau los ntawm demister. Thaum kawg, lub tshuab nqus cua nqus cua nqus tau tawm ntawm lub tshuab ziab khaub ncaws mus rau lub tshuab deodorization.
Qhov kev xav tau ntawm cov cua sov yog txiav txim siab yog chav, uas yog muab los ntawm cov thermal npog cov yeeb nkab network tsim nyob ze ntawm qhov chaw ua haujlwm. Cov khoom siv chav dej yog chav siab ntawm 1.0MPa, chav kub ntawm 180 ℃ thiab chav mov ntawm 2.5t / h.
2. Technical parameters ntawm cov khoom tseem ceeb rau nyias zaj duab xis ziab txheej txheem
Raws li qhov kev thov ntawm qhov project no, lub peev xwm kho sludge ntawm ib txheej ntawm sludge drying system yog txiav txim siab yog 2.5t / h (raws li cov ntsiab lus noo ntawm 80%), thiab cov sludge noo noo yog 35%. Lub peev xwm kho sludge txhua hnub ntawm ib lub tshuab ziab khaub ncaws nyias nyias yog 60 t / d (raws li cov ntsiab lus noo noo ntawm 80%), qhov ntsuas evaporation muaj peev xwm ntawm ib lub tshuab ziab khaub ncaws nyias nyias yog 1.731 t / h, thaj chaw sib pauv cua sov ntawm ib leeg. Lub tshuab ziab khaub ncaws nyias nyias yog 50 m2, thiab cov ntsiab lus noo ntawm sludge inlet yog 80%, thiab cov ntsiab lus noo ntawm sludge qhov hluav taws xob yog 35%. Lub tshav kub ntawm lub tshuab ziab khaub ncaws yog saturated chav, thiab qhov zoo ntawm chav muab khoom yog txawv teb chaws: chav kub yog 180 ℃, chav siab yog 1.0 MPa, chav noj ntawm ib lub tshuab ziab khaub ncaws nyias nyias yog 2.33t / h, thiab tus naj npawb ntawm cov tshuab ziab khaub ncaws nyias nyias yog 2, ib qho rau ib qho siv.
Lub saturated chav ntawm 180 ℃ yog thauj mus rau lub linear tshuab ziab khaub ncaws los ntawm lub siab pipeline, thiab nws yog siv raws li ib tug tshav kub qhov chaw rau indirect cua sov lub semi-qhuav sludge. Cov dej nyob rau hauv ib nrab qhuav sludge yog ntxiv evaporated nyob rau hauv linear tshuab ziab khaub ncaws. Raws li qhov xav tau tiag tiag ntawm cov khoom sludge (pib thiab nres), qhov kawg sludge tuaj yeem ncav cuag 10% noo noo cov ntsiab lus thiab mus rau cov khoom txias.
Lub peev xwm ua haujlwm ntawm lub tshuab ziab khaub ncaws yog 0.769t / h (cov ntsiab lus noo noo 35%), cov ntsuas evaporation yog 0.214t / h, thaj chaw tshav kub yog 50 m2, cov ntsiab lus noo noo ntawm sludge inlet ntawm linear tshuab ziab khaub ncaws yog 35%, noo noo. Cov ntsiab lus ntawm sludge qhov hluav taws xob yog 10%, qhov tsis zoo ntawm qhov hluav taws xob tsis zoo ntawm lub tshuab ziab khaub ncaws: chav kub yog 180 ℃, chav siab yog 1.0 MPa, chav noj ntawm ib lub tshuab ziab khaub ncaws yog 0.253 t / h, thiab cov khoom muaj ntau. nrog 1set.
Cov khoom siv ntawm cov cab kuj roj condenser yog ncaj qha txhaj tshuaj hybrid condenser, nrog cua nkag ntawm 3 500 Nm3 / h, inlet gas kub ntawm 95 ~ 110 ℃, qhov hluav taws xob roj kub ntawm 90 ~ 180 Nm3 / h, thiab qhov hluav taws xob roj. kub ntawm 55 ℃.
Cov khoom siv ntawm cov khoom siv roj av induced cua ntsawj ntshab kiv cua yog siab centrifugal ntxuam, qhov siab tshaj plaws cua nqus ntim yog 400 Nm3 / h, cua siab yog 4.8 kPa, lub cev tsis muaj roj nruab nrab: qhov kub thiab txias yog 45 ℃, cov av noo. yog 80% ~ 100% huab cua ntub cov pa roj sib tov, ib txheej txheej ziab yog nruab nrog 1 teeb.
Lub peev xwm ua haujlwm ntawm cov khoom txias txias yog 1.8t / h, sludge inlet kub yog 110 ° C, sludge qhov hluav taws xob kub yog ≤45 ° C, tshav kub exchanger cheeb tsam yog 20 m2, thiab qhov ntau yog 1 unit.
3. Kev soj ntsuam ntawm kev siv hluav taws xob siv hluav taws xob thaum ua haujlwm ntawm lub tshuab ziab khaub ncaws nyias
Tom qab ze li ntawm ib nrab ib hlis ntawm ib qho kev commissioning thiab av nkos commissioning ntawm nyias zaj duab xis ziab txheej txheem, cov txiaj ntsig tau raws li hauv qab no.
Tus qauv tsim kev ua haujlwm muaj peev xwm ntawm ib lub tshuab ziab khaub ncaws nyias nyias hauv qhov project no yog 60 t / d. Tam sim no, qhov nruab nrab ntub dej sludge kho thaum lub sij hawm commissioning yog 50 t / d (cov ntsiab lus noo noo yog 79%), uas tau mus txog 83% ntawm cov tsim sludge ntub hauv paus kev kho scale thiab 87.5% ntawm cov tsim sludge qhuav puag kho scale.
Qhov nruab nrab noo noo cov ntsiab lus ntawm ib nrab qhuav sludge tsim los ntawm nyias zaj duab xis tshuab ziab khaub ncaws yog 36%, thiab cov ntsiab lus noo noo ntawm semi-qhuav sludge exported los ntawm linear tshuab ziab khaub ncaws yog 36%, uas yog qhov tseem ceeb nyob rau hauv txoj kab nrog rau lub hom phiaj tus nqi ntawm lub tshuab ziab khaub ncaws. tsim khoom (35%).
Ntsuas los ntawm sab nraud saturated steam meter nyob rau hauv lub sludge drying Rhiav, lub saturated chav noj yog 25 t / d, thiab lub theoretical tag nrho cov hnub kub noj ntawm latent cua sov ntawm chav vaporization yog 25 t × 1 000 × 2 014.8 kJ / kg÷ 4.184 kJ = 1.203 871 9 × 107 kcal/d. Qhov nruab nrab txhua hnub evaporation dej ntawm lub tshuab ziab khaub ncaws yog (50 t × 0.79)-[50 t × (1-0.79)] ÷ (1-0.36) × 1 000 = 23 875 kg / d, Tom qab ntawd chav tsev kub noj ntawm sludge drying system yog 1.203 871 9 × 107÷23 875 = 504 kcal / kg evaporated dej; Vim tias cov sludge drying system yuav raug hloov pauv ntawm cov dej sludge noo noo, qhov zoo ntawm cov khoom siv sab nraud, thiab cov yam ntxwv ntawm cov khoom siv thauj mus los ntawm cov khoom siv rau cov khoom siv granularity thiab lwm yam, nws yog ib qho tsim nyog los txhim kho tus nqi ntawm ntau yam sib txawv. nyob rau hauv lub neej yav tom ntej mus rau lub sij hawm ntev mus ua hauj lwm, thiaj li hais txog cov ntsiab lus zoo tshaj plaws kev khiav hauj lwm tej yam kev mob thiab economic zog noj Performance index ntawm lub system.