rolara omisa polyaluminium chloride

Roller-dried polyaluminium chloride (PAC), e sebetsang hantle haholo bakeng sa Phekolo ea Metsi, e sebelisoa haholo ho hloekisa metsi le tsamaiso ea metsi a litšila. E le mofuta o tiileng oa polyaluminium chloride (PAC), e etsoa ka mokhoa oa ho omisa moropa, o fana ka melemo e kang ho boloka habonolo le ts'ebetso e phahameng. Ka tlase ke tla hlalosa lintlha tsa bohlokoa:

1. Litlhaloso tsa mantlha le maikutlo a mantlha

E omisitsoeng Polyaluminium Chloride (PAC) ke motsoako oa polymer oa inorganic o nang le foromo ea lik'hemik'hale [Al₂(OH)nCl₆−n]m[Al₂​(OH)n​Cl₆−n​]m) (moo nn e tlohang ho 1 ho isa ho 5 mme limilimithara li bontša tekanyo ea polymerization). E hlahisoa ke PAC slurry ea mokelikeli o fehlang metsi ka har'a lisebelisoa tse omisang tsa moqomo o mocheso o phahameng, e etsa phofo e bobebe e mosehla kapa e sootho kapa granules. Ha ho bapisoa le PAC ea mokelikeli oa setso, foromo ena e ithorisa haholo (hangata ≥30% alumina content) le nako e telele ea nako (ho fihla ho lilemo tse 1-2). Mosebetsi oa eona o ka sehloohong ke ho ba le litšila tse phallang ka potlako ka metsing ho etsa lihlopha bakeng sa karohano e latelang ea sedimentation. Haholo-holo, tlas'a maemo a sejoale-joale a tikoloho, PAC e omisitsoeng e fetohile mokhoa o ratoang ho feta matsoai a setso a aluminium (joalo ka aluminium sulfate) ka lebaka la masala a eona a tlase a tšepe e boima le ts'ebetso e phahameng ea flocculation.

2. Mokhoa oa tlhahiso le ts'ebetso

Ts'ebetso ea ho omisa meropa ke mohato oa bohlokoa tlhahisong ea PAC e tiileng, e kenyelletsang haholo mekhahlelo e mene: ho lokisoa ha thepa e tala, karabelo ea polymerization, ho omisoa ha meropa le ka mor'a kalafo:

●Tokiso ea thepa e tala: aluminium bauxite, aluminium hydroxide kapa litšila tse nang le aluminium li sebelisoa e le lisebelisoa tse tala ho qhaqha ka hydrochloric acid ho etsa tharollo ea PAC ea mokelikeli.

●Polymerization: Thempereichara (80-100 ° C) le pH boleng (3.5-4.5) li laoloa ka sekontiri ho hydrolyze le polymerize ion aluminium ho etsa slurry e phahameng ea alkaline (hangata 50-70%).

●Ho omisoa ha Drum: slurry e koahetsoe ka ho lekana holim'a moqomo o phahameng oa mocheso (mocheso oa 150-200 ° C), 'me metsi a fetoha mouoane ka ho potoloha ho etsa lesela le lesesaane le tiileng, ebe phofo kapa likaroloana li fumanoa ka mor'a ho senya le ho hlahloba.

●Ka mor'a ho sebetsa: Sehlahisoa se pholisitsoe 'me se phuthetsoe ho netefatsa hore ha ho na khohlopo le botsitso.

●Melemo ea ts'ebetso ena ke ho boloka matla le ts'ebetso e phahameng (nako e khuts'oane ea ho omisa, tšebeliso e tlase ea matla) le bohloeki bo phahameng ba sehlahisoa (litšila tse fokolang), empa ho boetse ho na le mathata a kang matsete a lisebelisoa tse kholo le litlhoko tse phahameng tsa taolo ea lerōle. Ho ea ka lipalo-palo, mokhoa ona oa tlhahiso o nka karolo ea 40% ea 'maraka oa lefats'e oa PAC, haholo-holo linaheng tse tsoelang pele (tse kang Chaena).

3. Likarolo tse ka sehloohong le melemo le bofokoli

Litšobotsi tsa drum dryer PAC li bontša hore e sebetsa hantle haholo kalafong ea metsi, 'me melemo ea mantlha e kenyelletsa:

●flocculation e sebetsang hantle: boima bo phahameng ba tefiso le boima bo boholo ba limolek'hule bo ka fokotsa ka potlako tefiso ea colloidal ka metsing, lebelo la ho phalla ka potlako (makhetlo a 2-3 ka potlako ho feta letsoai la setso la aluminium), le mefuta e mengata ea pH (5-9).

●Tšireletseho ea tikoloho: ion e tlaase ea aluminium e setseng (

●Bonolo ba polokelo: molumo o monyane ka sebopeho se tiileng, ha ho bonolo ho tsoa, ​​litšenyehelo tse tlase tsa lipalangoang le polokelo; tikolohong e mongobo, sephutheloana se thibelang mongobo sea hlokahala ho qoba ho qhoma.

●Go tlhoka mesola: Theko e phahameng ya tlhahiso (tshebediso e phahameng ya matla bakeng sa ho omisa); haeba e sa sebelisoe ka tsela e nepahetseng, ho ka hlahisoa lihlahisoa tse nyenyane (tse kang khase ea hydrogen chloride), 'me e hloka ho sebelisoa sebakeng se nang le moea o motlakase. Ka kakaretso, ts'ebetso ea eona ea litšenyehelo e betere ho feta PAC ea mokelikeli ka tšebeliso ea nako e telele, haholo-holo e loketseng libaka tse hole kapa limela tse ngata tsa metsi.

4. Libaka tsa kopo le ts'ebeliso e sebetsang

Ts'ebeliso ea mochini o omisang meqomo PAC e pharaletseng, haholo-holo mafapheng a latelang:

● Phekolo ea metsi a nooang: ho tlosa turbidity, lintho tse phelang le likokoana-hloko, tse loketseng metsi a litoropong le mekhoa ea ho hloekisa metsi a mahaeng.

●Phekolo ea metsi a litšila a indasteri: hloekisa metsi a litšila a tsoang khatisong le ho daeang, ho etsa pampiri, merafong le liindasteri tse ling, ho lokisa litšepe tse boima ka katleho le lintho tse tiileng tse emisitsoeng.

●Litšebeliso tse ling: ho kenyelletsa ho ntša metsi a litšila (e le thuso ea ho ntša metsi), ho ntšoa ha petroleum (e le motsoako oa mokelikeli oa ho cheka), le indasteri ea kaho (e le accelerator).

●Ha e le hantle, ho kgothaletswa hore tekanyo e be 0.1-10mg / L (ho itšetlehile ka boleng ba metsi), 'me e ka ekeletsoa ka ho toba ho' mele oa metsi ka mor'a ho qhibiliha. Tlhahisoleseling ea tlatsetso: Ka keketseho ea khaello ea metsi lefatšeng ka bophara, tlhokahalo ea ho omisa meqomo PAC mererong e sebelisoang hape ea metsi le zero e ntse e eketseha, mme mmaraka o lebelletsoe ho hola ka 8% selemo le selemo ka 2025.

Joaloka moemeli oa phekolo ea metsi a tala, drum e omisang polyaluminium chloride e kopanya katleho e phahameng, polokeho le moruo, 'me e loketse ka ho khetheha merero e meholo ea indasteri le ea masepala.