NCM Precursor Solution - Hangzhou Enco Machinery Co., Ltd.

Paub meej ntawmNCM precursor solution

Nyuaj hauvNCM precursorkev kho mob:

NCM precursor tov yog npib tsib xee cobalt manganese hydroxide NixCoyMn(1-xy) (OH) 2, ib tug ternary composite cathode khoom precursor khoom, uas yog ib tug roj teeb cathode khoom nrog nickel ntsev, cobalt ntsev thiab manganese ntsev raws li raw khoom, feem ntau haum rau cov roj teeb fais fab thiab cov roj teeb me me. Nyob rau hauv tus txheej txheem ntawm kev npaj NCM precursors, tsis tshua muaj hlau los nag txoj kev yog feem ntau siv rau kev npaj, uas yuav tsim ib tug loj npaum li cas ntawm cov nickel thiab cobalt-muaj cov dej khib nyiab.

Txawm hais tias ultrafiltration thiab thim rov qab osmosis muaj cov teebmeem kev kho mob zoo, kev kho mob qeeb qeeb (txhua cov osmotic membrane tuaj yeem kho tsis pub ntau tshaj 0.45m3 ntawm cov dej khib nyiab ib teev), cov nqi ntawm cov membrane yog siab, cov membrane pores tau yooj yim thaiv thiab ua tsis tiav, lub neej luv luv, thiab nws tsis tuaj yeem rov tsim dua tshiab thiab tsuas yog hloov tau. Feem ntau, tsuas yog cov lag luam loj uas muaj lub zog ntawm kev lag luam, thiab cov lag luam me thiab nruab nrab tsis tuaj yeem them taus. Lawv tsuas tuaj yeem tso tawm ncaj qha tom qab kev kho ua ntej lossis tsuas yog tom qab thawj qhov pom. Qhov no yuav tsis tsuas yog qhia txog kev ua qias tuaj rau ib puag ncig, tab sis kuj ua rau cov dej khib nyiab tsis ua raws li cov qauv tsim dej hauv kev lag luam thiab nyuaj rau rov qab siv dua, uas ua rau cov dej khib nyiab zoo heev.

NCM precursor yam:

NCM precursors feem ntau yog synthesized nyob rau hauv cov kua theem los ntawm ternary kua (sib tov tov ntawm npib tsib xee sulfate, cobalt thiab manganese), kua alkali thiab ammonia dej nyob rau hauv tej yam kev mob, thiab ces ua rau hauv cov khoom tiav los ntawm kev laus, cov kua-kua sib cais, khiav dej ntxuav, ziab, tshuaj ntsuam, tshem tawm hlau, ntim thiab lwm yam txheej txheem. Cov khoom sib cais-kua thiab khiav dej ntxuav txuas ua rau niam cawv thiab ntxuav dej raws. Niam cawv pH ntawm NCM precursor yog 12-13, qhov loj ntawm cov hlau ions (Co2++Ni2++Mn2+) yog li 100mg / L, ammonia nitrogen yog txog 5-10g/L, thiab sodium sulfate yog li ntawm 100-150g/L; cov dej ntxuav pH yog 6-8, qhov loj ntawm cov hlau ions (Co2++Ni2++Mn2+) yog li 20mg/L, ammonia nitrogen yog li ntawm {{14} }}g/L, thiab sodium sulfate yog li ntawm 10-15g/L. Txhua tuj ntawm NCM precursor tsim tawm txog 15m3 ntawm niam cawv thiab txog 10m3 ntawm cov dej ntxuav, uas yog cov dej ntau. Cov dej tsis zoo ntawm cov cawv niam thiab cov dej ntxuav yog qhov zoo ib yam, tab sis qhov sib txawv ntawm qhov concentration yog qhov loj, uas ua rau cov txheej txheem kev kho mob nyuaj, tus nqi siab thiab cov nyhuv tsis zoo.

NCM precursor txoj kev kho mob

Cov txheej txheem kev kho mob rau NCM precursors suav nrog chav stripping + khov crystallization txheej txheem thiab chav stripping + tsoos deamination + txheej txheem khov crystallization. Ob txheej txheem no muaj lawv tus kheej qhov zoo thiab qhov tsis zoo.

Technology Thawj

Peb muab ntau yam khoom sib kis

1. Chav stripping + khov crystallization txheej txheem

Tom qab niam cawv thiab dej ntxuav tau sib tov sib npaug, cov txheej txheem nqus dej yog siv los kho cov dej ammonia rau kev rov ua dua tshiab, thiab cov hlau hnyav (Co2++Ni2++Mn2+) tsim hydroxides [Co(OH)2+Ni(OH)2+Mn(OH)2], thiab pH ntawm cov dej khib nyiab tau hloov kho, thiab cov sodium sulfate rov qab los ntawm cov txheej txheem khov crystallization. Cov txheej txheem ntws yog yooj yim, tab sis cov ammonia nitrogen hauv cov dej khib nyiab tau txo qis tom qab cov dej ntxuav tau tov nrog niam cawv, uas cuam tshuam rau kev ua haujlwm ntawm chav stripping kom rov zoo ammonia nitrogen. Nyob rau tib lub sijhawm, nws yog ib qho tsim nyog yuav tsum tau ua kom muaj peev xwm ua tau zoo ntawm cov khoom siv hluav taws xob, thiab kev nqis peev thiab cov nqi khiav lag luam ntawm chav stripping tau nce. Thaum siv cov txheej txheem khov crystallization, qhov kev tshem tawm ntawm sodium sulfate yog kwv yees li 50%, thiab cov ntsiab lus ntsev hauv cov kua dej yog li 50g / L, uas yog qhov nyuaj rau ua kom tau raws li cov qauv kev tawm dag zog ib puag ncig.

2. Chav stripping + tsoos deammonification + txheej txheem khov crystallization

Cov txheej txheem no kho tus niam cawv thiab ntxuav cov dej sib cais. Tom qab niam cawv raug tshem tawm los ntawm cov txheej txheem kev tshem tawm ammonia nitrogen, cov txheej txheem khov crystallization yog siv los tshem tawm sodium sulfate. Cov dej ntxuav yog kho los ntawm cov txheej txheem ammonia nitrogen cov dej khib nyiab xws li biochemical method, air stripping method, breakpoint chlorination method thiab chemical precipitation method. Txawm li cas los xij, txoj kev lom neeg nyob hauv thaj chaw loj, thiab qhov siab ntawm cov ntsev hauv cov dej ntxuav yuav cuam tshuam cov kab mob, ua rau txo qis kev kho mob; cov txheej txheem huab cua stripping, breakpoint chlorination thiab tshuaj los nag txoj kev muaj kev kho mob tsis zoo, tus nqi siab, thiab cov pa phem thib ob. Cov txheej txheem tsoos tsis tuaj yeem ua tau raws li cov kev cai ntawm ib puag ncig emission qauv.

Kev siv cov txheej txheem kev kho mob ib txwm muaj teeb meem xws li kev kho mob tsawg, cov nqi khiav lag luam siab, qis sodium sulfate rov qab tus nqi, cov kua dej ntsev ntau, thiab cov pa phem thib ob. Yog li ntawd, nws tseem ceeb heev kom siv cov txheej txheem tshiab los kho NCM cov dej khib nyiab ua ntej.

ENCO txoj kev kho mob rauNCM precursor dej khib nyiab:

►ENCO ntseeg hais tias kev kho kom zoo ntawm cov khoom siv khib nyiab pov tseg yuav tsum ua raws li cov dej zoo, cov dej ntim thiab cov xwm txheej ib puag ncig hauv cheeb tsam ntawm cov dej khib nyiab tshwj xeeb, thiab siv txoj kev npaj kho mob tsim nyog thiab kev lag luam. Sim cais thiab rov ua kom muaj txiaj ntsig zoo ntawm cov dej khib nyiab thaum kho cov dej khib nyiab. Kang Jinghui siv chav stripping + thim rov qab osmosis membrane + MVR evaporation txheej txheem.

► Niam cawv thiab dej ntxuav yog sau thiab kho nyias. Cov cawv niam yog kho los ntawm chav stripping system. Lub pH yog pre-hloov mus rau 12 ua ntej nkag mus rau lub stripping pej thuam (tus thawj pH ntawm niam cawv yog feem ntau 12-13, uas ua tau raws li cov dej inlet yuav tsum), kom ammonia muaj nyob rau hauv cov dej nyob rau hauv ib tug dawb lub xeev, thiab ces xa mus rau lub stripping distillation ntauwd. Chav yog nkag mus rau hauv qab ntawm tus pej thuam kom evaporate ammonia los ntawm dej. Cov ammonia yog condensed rau hauv 20% ammonia dej rau rov siv dua tom qab kev sib hloov cua sov thiab txias rau saum cov pej thuam. Cov kua tom qab ammonia evaporation (ammonia nitrogen<15mg>Raws li qhov tseeb tsim khoom, ntau lub tshuab stripping yog tsim. Vim tias cov chloride ions hauv NCM cov dej khib nyiab ua ntej<10mg>

6chanical vapor recompression (MVR) yog kom nkag mus rau theem theem evapation nrog lub tshuab cua sov thiab siab, thiab siv nws ua kom sov cov khoom evaporation dua. Nws siv cov hluav taws xob me me kom rov ua dua cov chav thiab txo cov chav siv sab nraud. Nws yog cov txheej txheem ua kom muaj zog thiab txuag hluav taws xob evaporation. Tom qab cov dej khib nyiab deammoniation nkag mus rau hauv MVR, tag nrho cov dej khib nyiab tuaj yeem hloov mus rau hauv cov dej distilled thiab rov qab mus rau qhov chaw tsim khoom ua dej ntxuav; cov sulfate rov qab los ntawm evaporation yog siv los ua cov khoom lag luam los tsim cov txiaj ntsig kev lag luam.

► Cov dej ntxuav yog kho nrog ntau theem rov qab osmosis membrane tshuab. Lub pH yog thawj zaug hloov mus rau 5-6, thiab tom qab ntawd xa mus rau cov khoom siv ultrafiltration kom tshem tawm cov teeb meem me me, thiab xa mus rau ntau theem RO rov qab osmosis membrane system. Lub membrane-tsim concentrated dej muaj cov khoom zoo sib xws rau niam cawv, thiab muab tso rau hauv niam cawv rau kev kho mob hauv cov khoom siv stripping. Lub membrane-tsim permeate tau mus txog tus qauv, thiab tag nrho cov ntsuas tau nyob ze rau cov dej ntshiab, uas tuaj yeem siv los ua cov khoom ntxuav dej rau kev tsim khoom.

Chav stripping + thim rov qab osmosis membrane + MVR ua ke txheej txheem ntws

Steam Stripping + Reverse Osmosis Membrane + MVR Combined Process Flow_00

ENCO Comparison chart of mvr evaporator and multi-effect evaporator

Chav stripping + thim rov qab osmosis membrane + MVR ua ke txheej txheem:

Lub ncu stripping + thim rov qab osmosis membrane + MVR cov txheej txheem ua ke yog siv los kho NCM cov dej khib nyiab ua ntej, uas tuaj yeem paub txog kev rov qab thiab rov ua dua ntawm ammonia thiab cov hlau hnyav hauv cov dej khib nyiab; cov khoom los ntawm Anhydrous sodium sulphate tuaj yeem raug muag raws li cov khoom siv tshuaj lom neeg; cov by-product distilled dej yog xa rov qab mus rau cov txheej txheem ntau lawm raws li cov khoom ntxuav dej. Txoj kev txheej txheem no paub txog tag nrho lub voj voog ntawm kev kho dej khib nyiab thiab yog ib txoj hauv kev ncig kev lag luam. Nws tuaj yeem hloov cov khoom pov tseg rau hauv cov khoom muaj nqis thiab paub txog qhov siab tshaj plaws ntawm cov khoom siv rov ua dua tshiab. Kev tsim thiab kev tsim khoom tau ua tiav raws li qhov yuav tsum tau ua ntawm lub tswv yim ntsuab kev loj hlob ntawm lub sijhawm tshiab.