CA3154180C - Treatment apparatus for waste cleaning liquid and treatment method for waste cleaning liquid - Google Patents

Treatment apparatus for waste cleaning liquid and treatment method for waste cleaning liquid Download PDF

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Publication number
CA3154180C
CA3154180C CA3154180A CA3154180A CA3154180C CA 3154180 C CA3154180 C CA 3154180C CA 3154180 A CA3154180 A CA 3154180A CA 3154180 A CA3154180 A CA 3154180A CA 3154180 C CA3154180 C CA 3154180C
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CA
Canada
Prior art keywords
cleaning liquid
waste cleaning
waste
treatment apparatus
separating means
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CA3154180A
Other languages
French (fr)
Other versions
CA3154180A1 (en
Inventor
Takahiro Tamura
Yotaro Nishijima
Yuan Tang
Nanri Fang
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
LG Energy Solution Nanjing Co Ltd
Mitsubishi Chemical Engineering Corp
Original Assignee
LG Energy Solution Nanjing Co Ltd
Mitsubishi Chemical Engineering Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by LG Energy Solution Nanjing Co Ltd, Mitsubishi Chemical Engineering Corp filed Critical LG Energy Solution Nanjing Co Ltd
Publication of CA3154180A1 publication Critical patent/CA3154180A1/en
Application granted granted Critical
Publication of CA3154180C publication Critical patent/CA3154180C/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/22Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • B01D1/222In rotating vessels; vessels with movable parts
    • B01D1/223In rotating vessels; vessels with movable parts containing a rotor
    • B01D1/225In rotating vessels; vessels with movable parts containing a rotor with blades or scrapers
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D1/00Evaporating
    • B01D1/22Evaporating by bringing a thin layer of the liquid into contact with a heated surface
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F23/00Mixing according to the phases to be mixed, e.g. dispersing or emulsifying
    • B01F23/50Mixing liquids with solids
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F25/50Circulation mixers, e.g. wherein at least part of the mixture is discharged from and reintroduced into a receptacle
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F27/00Mixers with rotary stirring devices in fixed receptacles; Kneaders
    • B01F27/80Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
    • B01F27/90Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms 
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01FMIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/90Heating or cooling systems
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00Treatment of water, waste water, or sewage
    • C02F1/02Treatment of water, waste water, or sewage by heating
    • C02F1/04Treatment of water, waste water, or sewage by heating by distillation or evaporation
    • C02F1/048Purification of waste water by evaporation
    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D207/00Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom
    • C07D207/02Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom
    • C07D207/18Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member
    • C07D207/22Heterocyclic compounds containing five-membered rings not condensed with other rings, with one nitrogen atom as the only ring hetero atom with only hydrogen or carbon atoms directly attached to the ring nitrogen atom having one double bond between ring members or between a ring member and a non-ring member with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
    • C07D207/24Oxygen or sulfur atoms
    • C07D207/262-Pyrrolidones
    • C07D207/2632-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms
    • C07D207/2672-Pyrrolidones with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to other ring carbon atoms with only hydrogen atoms or radicals containing only hydrogen and carbon atoms directly attached to the ring nitrogen atom
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M4/00Electrodes
    • H01M4/02Electrodes composed of, or comprising, active material
    • H01M4/13Electrodes for accumulators with non-aqueous electrolyte, e.g. for lithium-accumulators; Processes of manufacture thereof
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2101/00Nature of the contaminant
    • C02F2101/30Organic compounds
    • C02F2101/38Organic compounds containing nitrogen
    • CCHEMISTRY; METALLURGY
    • C02TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02FTREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2301/00General aspects of water treatment
    • C02F2301/04Flow arrangements
    • C02F2301/046Recirculation with an external loop
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01MPROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00Secondary cells; Manufacture thereof
    • H01M10/05Accumulators with non-aqueous electrolyte
    • H01M10/058Construction or manufacture
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10Energy storage using batteries

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Materials Engineering (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Accessories For Mixers (AREA)
  • Mixers Of The Rotary Stirring Type (AREA)
  • Pyrrole Compounds (AREA)
  • Acyclic And Carbocyclic Compounds In Medicinal Compositions (AREA)

Abstract

The present invention provides an apparatus and a method for treating cleaning liquid waste that is discharged during the electrode production process of a lithium ion secondary battery, namely a treatment apparatus for cleaning liquid waste and a treatment method for cleaning liquid waste, said apparatus and method being capable of efficiently separating liquid components and solid components from each other, and being capable of sufficiently recovering the liquid components for volume reduction.?A treatment apparatus for cleaning liquid waste according to the present invention is provided with: a stirring tank 6 serving as a stirring means for stirring cleaning liquid waste; a liquid sending line that takes out the cleaning liquid waste from the stirring tank; and a thin film evaporator 7 serving as an evaporative separation means for separating solid components by evaporating cleaning liquid in the cleaning liquid waste. With respect to a treatment method for cleaning liquid waste according to the present invention, cleaning liquid waste is stirred by a stirring means, and the cleaning liquid waste in a state where the solid components are diffused is fed to an evaporative separation means, so that cleaning liquid in the cleaning liquid waste is evaporated.

Description

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MP) Vth1-64t51z.itszistrcoZ0 [0027] 17+-RMR 7 2 it, MREg*1* 7 0 011:161nitc tttzgRab 11 7 3 CCM., MtQicfltvciU. J itJtR7 2 Atritilsit, MAgg** 7 0 64AR1allA-:_c tvC Lo ari. 7 3 it. X5egit4* 7 00_Lit#0_LE 7 4 (Crallibleita-bkftg**47 0 0)-F40)0E-A7 5 1:-Mtl6tifc gt-c, 1E-A7 5 kit.
1%-7 5 c 64vt 13 , *WAR
gg 71*. ttMg 231 enA tilt A 5 Y 14F 7 6 tx 6 1111M33-*4JVI-L 1:140Zz_v 4-1,-ck,µLo [0028] MfltiiiK 7 0 091-1MINOSIgatML Lt it Wt. hrIPM1121KL l/COM
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Ica, braAral*ffin (N.>) 7 1 b ei14:41 61-v-0,µ 0 [0029] Fl 1 Cj..7Mck 9LLJTNI-j-1-3l.\
-tO31;19 ZA9fl:/
3 4 --ClaE-4- 6 it- ). Mingtg 7 -C3-Atit titz_-111Mh÷-}& 5 VE1113Vg gg 8 cc Al 2 3 e -UAL) VC¨ 111 MINT ck fa- ts tt-C 60 -t -C, 5.Y:-11711137-V-580gia51:11, INW94 '7fl6301fr2 4, 7It>13 5.
,tTr 2 5 /3{S.T3A*4-L-C 9, Hfrifliig 4 7 v.g_gg 8 Nom:m3Hlitifigois494giii 4 1 1L5zt5iZtt tt,-Co 60 [0030] ¨fi, _LIBOXIMAItgg 7 0V9,11,101WVANVffila13 AZ,17111R5 4 1,- OTEMatopMa 6 is(vg,-:_c trc , Awls, 6 OT30,10.11:11, Nang 5 2 etairS tlet -t Lt, MB-Mni 7 ---c1/2-Attx Irteit N M P 0C,ROSi% 5 2t'flL Alhz's 1-Lit N M P *5-INEMENT-24 9 14:508 1 7 31111.;-C-17111R-4- ck -5 lz_ tt-C o 6, 418, N1i1S 5 2 e U-Clt, VEAMtkil!graig EetrtiOASLE..fPctaVVItt L'IL

[0031]
a5,J1YS28 Raiz *P9t5j111 4A
tan,S, 1:-...M41- 6 tc651z.-,naff-Lc -c o 6, ty-AftAptzgagg 9 0 an ic gafi 1 8, 71-Z.:i73 3, 5illfi 1 9, Aug 5 3, Aga 2 o ti= t-2A A-121Krig tiStif*tv-c si 3711..01ZWIL-80-C1t, Wit A121KIIRffl 4 , 5 Altal:PlySg590NMP ciilmAfttit4- 2 tz_11Ygnck 1:-..tszlca-co ti/g5 5 3 it, 1E111RAVel 4 2 131,774-0- N M P FANAIzAti:1-4- itai5 1:-.Eff-1/41std-cto)--C6k1, *tiPiR 5 3 1,-C1t, VgARA517.10c5ts2ferta OcalOgR .1C11-4- C
[0032] ftc. 9113-Inic 80-C tl, 514t1 L-CNIIMMAgg 7 ta- t-3 it __________ 3Mt1/41iEtc-ftZtctib, WIMAS3).NIME11131-1444 9 6D-hg1t, Mi112 1 1Lt al.t>73 4 ir-PitflirC OZ. tc171 IlRfst-L6NM P vc.8116igrtkihtbiDhketrall4- kW), *ts.EG)Wli )1 a Aid 1- ta-605AM 2 2 hc, 01.1 ilitgB051A 2 1 ts tyCLµZ

[0033] M.:, gB0011ifiNVVO litz.-.*R1311001iffiliareDµvraqin&

tISaiNIP 614V-,1zIt z33tAAA. 4OtifflatERAiNiz&3Mgip t#
N M P &tm3-}L z a4FgAtt, 5M1gr &iffi etwil#147474 4 o criew -n1,60 [0034] *ftlEln090-151(z.80-r(t, AT, 3061 , 4-:>7 3 , M,Y6 1 2 ifflet 111MT4gg 4 0 irD5A4FWEAttte4#VAL -c of0 A_ ISM** 6 ".4 AT 60 itilkStiltiWoDPANtz.:ct --2-c-tatszhc, VIM 6 ,a);AARWA
4Xta, INIA. if 0 0 ¨ 5 0 0 k g /1141E.OZ z,õ ftc zwaw*ig si-4-6mt, ;MU 2 tiffie-c-Pgr_Aritf.flifittatsbiti's, Afl:f 73 4 One-,tc-t-c#49 '1-10kPaAtZ_AEne, [0035] ;XL\ fRIVA 6 --c.
J1t I Uk It tAttn 6 2 lElti-ft--c5CIERAeglt z_mer_ct , AnAgrIzio INIFMZ3-/-U1N-.35--ft 60 tc U1Z-yin) h 6 tzbulltrIMDMMflit 6131M93593RAk 4 0-9 WC, ti-T
< it 7 0 ¨ 9 ocetz_ba Mt 60 as hczck AnEffga03;101.1 r-1%45').12L-D!MIATIFizift-itt 4g4416r.:80-021441.,ta:tc6, 311,4 13. 7n:i3'3 2, AWA 1 4 EzziSkS4 1 5 51111.:-C, Aft3A-11#19:L LT
MEWEgg 7 =StAggA IttAtil- 6 0 [0036]
tc. =MOM' 7 ^-350FJAA1itAat 6 (z_ fc U. gBoilA5 4 tr_ 80-c, men 5 1 tz...1 miz..55t50-ft 60¨ 1 00 C, kjg L.,< 11.8 0¨i o occ*-ehntitl-60 clieLreck A5 A01.tbiltflftf4u, fro AAAAkoillAkftAlgtic¨JE3ft--50-6 z:Lbc--e, 60 1-4.40-5, *ft AAtaarli effu:5-lugtatt 4A111S-,-eX114X3M 7 =3-ZIEWEA .fitifTal- 6 a Ltz-_,:t 3-01friMgM tz 8'1 6rMalsEIL-0-60 Gt=t, M5t 5ilcifreittkiAtatsWiAM-R5 7/5A5S-AgklitAft-4-41- izck 9, MIAM3Eig 7 0431111g%+3-)1cRit'sfi 60 [0037] xamtn 7 tstv-C Vkftigtf* 70 tz: U ts13( 6. El tiiMN 7 2 1:1fitc-t6c, Mt, -t It Vt'I- 7 1 izahrOJEMPMA
MItgRa 7 0 V5lika 1 0 0¨ 1 3 Ott:NMI-6e zr.41,1-cct.

MINSOM 7 I:MN-CU, M M*12fr 7 0 41)flWiz-35U*A4YONIRilifi AgaA0)MRIATittµ11,Z0 *RI:010311.3-1litz: 80-T _LE
ck tz-_. WM' 7 (:_{#141-63-%4Fnekit Bt-cei), MEMMAgg 7 iz..1-3t*&¨tflfl [0038] MIRMAgg 7 1zt3tvt-11, _MO ck 5 tz..5AXtga Mai:DA-0- Z1 5-Ani-A1:1:105ZIFAM5setc ff-CINIROZ33. 3-14111- Z.
LT, 3-)Aftl, tc1NR-100 1:11iM14 7 2 -C-4004] 1:14 .,WZ , POORtit 7 0 it 6a 5 VtiVthI:1 7 6 t-Fli,NtiVW-M gtc.-., Alttct-C4464B N M P
MAgg*Olc 7 0 _tirgOk%ffi LI 7 0 b bNiS1:111rt 60 [0039] MUM& 7 0n331114fr a UHfl 7 b` ffi tc 116 INIFMC33-, ts 4-)S, EtvitAibl*AllItIn43-)U, 2 3 *AU "C a, RR 8 14:171454- .a ::;17111,7-74 8 Iz_171113its attrItHiMZ3-)1t, AM 2 71C9J33 5, ASil 2 5 13`10t6ieffi5.1 etWIJAIXWINtlre=4 it:
itzUffitz_r_Lire,1-6.
[0040] gtc IMAIM 7 0A5t3AM9Fic ct XIMAItiR 7 75% lEllIgt! 416 ttatt, N M P 04%1S, Skia 1 6 311.1..; --014fl 5 2 icSA Ls aflL't&1LtZ2titc, M.Wg- 1 7 -CW*0 N M P
1:111R-ggg 9 1:16131-6.
LT, 3-)ItAl:111Y-t-tg 90NMPII, j1 8.
V)3 3 MIA 19. MA 2 0 Cffi --c- IEHRAIVM 4 2 iat t 6, EtzAfitt14 2 IzatAl- bit AM 1 9 AM 2 0 11-X-,13 ttit-Strilgt 5 3 Cc ck , N M P FA'Tag TA-Alit 6. 171113ZAMB4 2 ONMPII. miz.-.anaArammatzct inc.' zrAtilf111- LP.- Lett- t, [0041] _EgairDck 5lc, *RPM:3 ot it, Tit, tkittj 6 lz_80-Cali-gAVI
t* lirltIfFMC3-1A¨Cc-Ittatc-ft, ItliD4Z33.ttaktz -fttr_inteMt3-YAIM
gt-c45 MjiMM5Agg 7 tz.-.AMI- it 49), A1113 ct TIVNI)A T-69111M5}0ty fall, {4*, tS 'Utz, IllfM5i= ck 611150rM*IshiLl- z:
6.
MISARgt 7 1C5itgi-Wgi Mat Bic ASAAVEA --ehrigtt-4-116 tcrt, MAPPfli;19-c-0111fFMC3}0)115."N
,t 60 LA t 3,13M0511S _h if 6 zi la-ct , XIIMfeta 7 17- t-3 It WM, e Lire 5' Zt-c65 AI*10-ILIAlfM3 03-)1110Sgt-se Attn bt3}kDAffa4btto3htetilirnire 60 Wiz, *REM: ttlt, ARY0-1Ve M-7179,1112flfigic ts. 6 it:6, S4ila)M3S. A I% ¨Magi- z: /IT ,t [0042] ts. 8, *Run it, _LE ck -3 1:11401WEitafr 14V ttftc.-.5%;*14MONI
u--c-7-g-tkA5tga e3/14-11:-.tp I- 6 zr. bc-C
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[0043]
,NHINISTW0093-A1075= 6#4Vifi -1/4! 4-1,1-c3A3FAA IA 1 0gNiz: ct --c-0111 G, NM PkHYt723tIz gtatEU-lt-A-C-MiCTIJIR-4-6Mk.15-it.- 0 MiNAR5 7 eMtg*I4c 7 0 1: 61RMI.W2A (*N ilkits-Mt5t*
) tt O. 5 m 2 Lit -1- VC, '9I:L1JIflfltcNMPflIj m P
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rigiEriaiWo&RMN/P614ffl-.35tilt.5**Mk*IitiPJL1415,0NE4A
3ng 7 tztlittUt AR3311191.11-1- -7 tz-_.0 3 c J't-c-7.1t MC6 ICI, 4 >1U. TIVA74254 0 iiNg;MilM3Egg 7 lz-AAJAA
iSt0144*Utcè.3, MEM izjjeit >ernau, teautimutz /Pe ts.fr [0045]

[V1]

)5MOI 2 MWS
(mf/min) AgEBIA.ValittaM (C) *Pg0iNUEEt (kPaA) XIIMREV\litiOLIL-Mfeagt (C) MIIMARRIDAW,IM (C) AV* (96) ag_to*MTitist [0046] *RIEIA -35t gil3EADZIMWEtil tr1a-Mtnigta0t.Likail, ficsa 13\6A4AtI.LINfRA3i.LOSnictAlfre,a4h-+tilcmlare JELDA--V-9113-re t, tz:65, ')f') b4 71- :.==;11.3MIDETattIattif113` cSi4Fffi tctida-DARUMOMW-41.-atggINAVALICLOTAT,b60 *-140E1E9i [0047] 40:11-MA7.4gg 41:MARAF4g 51:MMAN
52:M4 53:AAM
6 :Mg*
60 :**#
61 :9-t (hIMMR) 6 2 tigia (tInfi) 7 : XIIINfAgg (Mst3laft*Et) 70:Wegg*#
71 : (hlaThEt) 72:171634R

76:030-TAIAMMffift 77:57914ffin 8 :75v:ADMSgR
9 :3ARAECC-745

Claims (8)

CLAIMS:
1. A treatment apparatus for waste cleaning liquid that treats a waste cleaning liquid discharged from a process of producing an electrode of a lithium-ion secondary battery, the waste cleaning liquid being a suspension of an electrode material that is a solid component and a cleaning liquid, the treatment apparatus for waste cleaning liquid including; a tank body having stirring means for stirring the waste cleaning liquid introduced from the electrode production process therein; a liquid feed line that takes out the waste cleaning liquid from the tank body; and evaporation separating means for evaporating the cleaning liquid in the waste cleaning liquid to separate the solid component, the evaporation separating means being supplied with the waste cleaning liquid by the liquid feed line, being characterized in that heating means capable of heating the waste cleaning liquid in the tank body to 40 to 90 C is disposed on the outer circumferential portion of the tank body, and a heating device capable of heating the waste cleaning liquid supplied to the evaporation separating means to 60 to 100 C is added to the liquid feed line.
2. The treatment apparatus for waste cleaning liquid according to claim 1, being characterized in that the stirring means is a stirring wing.
3. The treatment apparatus for waste cleaning liquid according to claim 1, being characterized in that the tank body has a circulation line by a pump.

Date Recue/Date Received 2023-06-21
4. The treatment apparatus for waste cleaning liquid according to claim 1, being characterized in that the evaporation separating means is a thin film evaporator.
5. The treatment apparatus for waste cleaning liquid according to claim 1, being characterized in that the evaporation separating means is a thin film evaporator, and the thin film evaporator includes:
a cylindrical evaporator body having one end portion from which the waste cleaning liquid is supplied; a rotating blade disposed along a centerline of the evaporator body; and heating means disposed on an outer circumferential portion of the evaporator body, and is provided with a structure to scrape off, by the rotating blade, a solid component adhered to an inner circumferential surface of the evaporator body and discharge the solid component from other end portion of the evaporator body.
6. The treatment apparatus for waste cleaning liquid according to claim 1, being characterized in that the cleaning liquid is N-methyl-2-pyrrolidone (hereinafter, abbreviated as "NMP") and the waste cleaning liquid contains NMP used for cleaning as a main component.
7. A treatment method for waste cleaning liquid of treating, by a treatment apparatus, a waste cleaning liquid discharged from a process of producing an electrode of a lithium-ion secondary battery, the waste cleaning liquid being a suspension of an electrode material that is a solid component and a cleaning liquid, being characterized in that the waste cleaning liquid treatment apparatus includes: a tank body having stirring means for stirring the waste cleaning liquid Date Recue/Date Received 2023-06-21 introduced from the electrode production process therein; a liquid feed line that takes out the-waste cleaning liquid from the tank body; and evaporation separating means for evaporating the cleaning liquid in the waste cleaning liquid to separate the solid component, the evaporation separating means being supplied with the waste cleaning liquid by the liquid feed line, and in the treatment method, the waste cleaning liquid is stirred by the stirring means, the waste cleaning liquid is supplied to the evaporation separating means in a state in which the solid component is diffused, and in the evaporation separating means, the cleaning liquid in the waste cleaning liquid is evaporated to separate the solid component, the waste cleaning liquid in the tank body is heated to 40 to 90 C, and the waste cleaning liquid supplied to the evaporation separating means is heated to 60 to 100 C.
8. The treatment method for waste cleaning liquid according to claim 7, being characterized in that the cleaning liquid is NMP and the waste cleaning liquid contains NMP used for cleaning as a main component.

Date Recue/Date Received 2023-06-21
CA3154180A 2019-10-09 2020-09-29 Treatment apparatus for waste cleaning liquid and treatment method for waste cleaning liquid Active CA3154180C (en)

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PCT/JP2020/036992 WO2021070689A1 (en) 2019-10-09 2020-09-29 Treatment apparatus for cleaning liquid waste and treatment method for cleaning liquid waste

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CN115663327B (en) * 2022-10-18 2026-03-03 雅邦绿色过程与新材料研究院南京有限公司 Method for separating lithium salt and carbonate organic solvent from lithium battery waste electrolyte
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TWI836149B (en) 2024-03-21
KR102808335B1 (en) 2025-05-19
CA3154180A1 (en) 2021-04-15
EP4015058A1 (en) 2022-06-22
JP2021058878A (en) 2021-04-15
TW202120163A (en) 2021-06-01
KR20220055489A (en) 2022-05-03
US20220410027A1 (en) 2022-12-29
WO2021070689A1 (en) 2021-04-15
CN114514203A (en) 2022-05-17

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