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Extract from the Register of European Patents

EP About this file: EP1891187

EP1891187 - METHOD FOR PREVENTING CHLORINE DEPOSITION ON THE SUPERHEATER OF A BOILER [Right-click to bookmark this link]
Former [2008/09]METHOD FOR PREVENTING CHLORINE DEPOSITION ON THE HEAT- TRANSFERRING SURFACES OF A BOILER
[2016/22]
StatusPatent revoked
Status updated on  30.01.2023
Database last updated on 19.03.2026
FormerThe patent has been granted
Status updated on  04.11.2016
Most recent event   Tooltip03.02.2023Revocation of patentpublished on 08.03.2023  [2023/10]
Applicant(s)For all designated states
Kemira Oyj
Porkkalankatu 3
00180 Helsinki / FI
For all designated states
Valmet Technologies Oy
Keilasatama 5
02150 Espoo / FI
[2016/09]
Former [2008/09]For all designated states
Kemira Oyj
Porkkalankatu 3
00180 Helsinki / FI
For all designated states
Metso Power Oy
P.O. Box 109
33101 Tampere / FI
Inventor(s)01 / AHO, Martti
Ollintie 4 B
FI-40270 Palokka / FI
 [2008/09]
Representative(s)Helke, Kimmo Kalervo, et al
Kespat Oy
Vasarakatu 1
40320 Jyväskylä / FI
[2014/26]
Former [2008/09]Helke, Kimmo Kalervo
Kespat Oy, P.O. Box 601
40101 Jyväskylä / FI
Application number, filing date06755414.712.06.2006
[2008/09]
WO2006FI50252
Priority number, dateFI2005000531716.06.2005         Original published format: FI 20055317
FI2006000504523.01.2006         Original published format: FI 20065045
[2008/09]
Filing languageEN
Procedural languageEN
PublicationType: A1 Application with search report
No.:WO2006134227
Date:21.12.2006
Language:EN
[2006/51]
Type: A1 Application with search report 
No.:EP1891187
Date:27.02.2008
Language:EN
The application published by WIPO in one of the EPO official languages on 21.12.2006 takes the place of the publication of the European patent application.
[2008/09]
Type: B1 Patent specification 
No.:EP1891187
Date:07.12.2016
Language:EN
[2016/49]
Search report(s)International search report - published on:SE21.12.2006
(Supplementary) European search report - dispatched on:EP04.05.2012
ClassificationIPC:C10L10/04, B01D53/68, F22G3/00, F23J7/00, F23J15/00
[2012/22]
CPC:
F23J7/00 (EP,US); C10L10/04 (EP,FI,KR,US); B01D53/68 (EP,KR,US);
C23F15/00 (KR); F22G3/008 (EP,KR,US); F23J15/003 (EP,KR,US);
B01D2257/2025 (EP,KR,US); Y02E50/30 (KR); Y02P30/20 (KR) (-)
Former IPC [2008/09]C10L10/04, C23F15/00
Designated contracting statesAT,   BE,   BG,   CH,   CY,   CZ,   DE,   DK,   EE,   ES,   FI,   FR,   GB,   GR,   HU,   IE,   IS,   IT,   LI,   LT,   LU,   LV,   MC,   NL,   PL,   PT,   RO,   SE,   SI,   SK,   TR [2016/49]
Former [2008/09]AT,  BE,  BG,  CH,  CY,  CZ,  DE,  DK,  EE,  ES,  FI,  FR,  GB,  GR,  HU,  IE,  IS,  IT,  LI,  LT,  LU,  LV,  MC,  NL,  PL,  PT,  RO,  SE,  SI,  SK,  TR 
TitleGerman:VERFAHREN ZUR VERHINDERUNG DER CHLORABSCHEIDUNG AUF DEM ÜBERHHITZER EINES BOILERS[2016/22]
English:METHOD FOR PREVENTING CHLORINE DEPOSITION ON THE SUPERHEATER OF A BOILER[2016/22]
French:PROCEDE PERMETTANT D'EMPECHER LE CHLORE DE SE DEPOSER SUR LA SURCHAUFFE D'UNE CHAUDIERE[2016/22]
Former [2008/09]VERFAHREN ZUR VERHINDERUNG DER CHLORABSCHEIDUNG AUF DEN WÄRMEÜBERTRAGUNGSOBERFLÄCHEN EINES BOILERS
Former [2008/09]METHOD FOR PREVENTING CHLORINE DEPOSITION ON THE HEAT- TRANSFERRING SURFACES OF A BOILER
Former [2008/09]PROCEDE PERMETTANT D'EMPECHER LE CHLORE DE SE DEPOSER SUR LES SURFACES DE TRANSFERT DE CHALEUR D'UNE CHAUDIERE
Entry into regional phase03.01.2008National basic fee paid 
03.01.2008Search fee paid 
03.01.2008Designation fee(s) paid 
03.01.2008Examination fee paid 
Examination procedure10.01.2007Request for preliminary examination filed
International Preliminary Examining Authority: SE
03.01.2008Examination requested  [2008/09]
05.12.2011Observations by third parties
26.11.2012Amendment by applicant (claims and/or description)
08.01.2013Despatch of a communication from the examining division (Time limit: M06)
01.07.2013Reply to a communication from the examining division
18.09.2013Despatch of a communication from the examining division (Time limit: M06)
26.03.2014Reply to a communication from the examining division
04.05.2015Despatch of a communication from the examining division (Time limit: M06)
06.11.2015Reply to a communication from the examining division
30.06.2016Communication of intention to grant the patent
25.10.2016Fee for grant paid
25.10.2016Fee for publishing/printing paid
25.10.2016Receipt of the translation of the claim(s)
Divisional application(s)The date of the Examining Division's first communication in respect of the earliest application for which a communication has been issued is  08.01.2013
Opposition(s)Opponent(s)01  07.09.2017  13.09.2017  ADMISSIBLE
Vattenfall AB
162 87 Stockholm / SE
Opponent's representative
Brann AB
P.O. Box 3690
Sveavägen 63
103 59 Stockholm / SE
 [N/P]
Former [2017/42]
Opponent(s)01  07.09.2017  13.09.2017  ADMISSIBLE
Vattenfall AB
162 87 Stockholm / SE
Opponent's representative
Brann AB
P.O. Box 3690
Drottninggatan 27
103 59 Stockholm / SE
deletedDeletion: Legal effect of rejection of opposition [ N /P ]
12.10.2017Invitation to proprietor to file observations on the notice of opposition
09.02.2018Reply of patent proprietor to notice(s) of opposition
18.03.2019Date of oral proceedings
30.04.2019Despatch of minutes of oral proceedings
30.04.2019Date of despatch of rejection of opposition
11.01.2023Legal effect of revocation of patent [2023/10]
26.01.2023Despatch of communication that the patent will be revoked
Appeal following opposition19.06.2019Appeal received No.  T1779/19
30.08.2019Statement of grounds filed
11.01.2023Result of appeal procedure: revocation of the patent
26.01.2023Despatch of the decision of the Board of Appeal
11.01.2023Date of oral proceedings
Fees paidRenewal fee
20.05.2008Renewal fee patent year 03
12.06.2009Renewal fee patent year 04
23.06.2010Renewal fee patent year 05
17.06.2011Renewal fee patent year 06
06.06.2012Renewal fee patent year 07
18.06.2013Renewal fee patent year 08
15.04.2014Renewal fee patent year 09
08.05.2015Renewal fee patent year 10
20.04.2016Renewal fee patent year 11
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Responsibility for the accuracy, completeness or quality of the data displayed under the link provided lies entirely with the Unified Patent Court.
Lapses during opposition  TooltipHU12.06.2006
AT07.12.2016
BE07.12.2016
CY07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
MC07.12.2016
NL07.12.2016
RO07.12.2016
SI07.12.2016
SK07.12.2016
TR07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
IE12.06.2017
LU12.06.2017
CH30.06.2017
LI30.06.2017
[2020/15]
Former [2019/46]HU12.06.2006
AT07.12.2016
BE07.12.2016
CY07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
MC07.12.2016
NL07.12.2016
RO07.12.2016
SI07.12.2016
SK07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
IE12.06.2017
LU12.06.2017
CH30.06.2017
LI30.06.2017
Former [2019/31]HU12.06.2006
AT07.12.2016
BE07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
MC07.12.2016
NL07.12.2016
RO07.12.2016
SI07.12.2016
SK07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
IE12.06.2017
LU12.06.2017
CH30.06.2017
LI30.06.2017
Former [2018/23]AT07.12.2016
BE07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
MC07.12.2016
NL07.12.2016
RO07.12.2016
SI07.12.2016
SK07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
IE12.06.2017
LU12.06.2017
CH30.06.2017
LI30.06.2017
Former [2018/21]AT07.12.2016
BE07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
MC07.12.2016
NL07.12.2016
RO07.12.2016
SI07.12.2016
SK07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
LU12.06.2017
CH30.06.2017
LI30.06.2017
Former [2018/11]AT07.12.2016
BE07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
MC07.12.2016
NL07.12.2016
RO07.12.2016
SI07.12.2016
SK07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
Former [2017/52]AT07.12.2016
BE07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
NL07.12.2016
RO07.12.2016
SI07.12.2016
SK07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
Former [2017/41]AT07.12.2016
BE07.12.2016
CZ07.12.2016
EE07.12.2016
LT07.12.2016
LV07.12.2016
NL07.12.2016
RO07.12.2016
SK07.12.2016
BG07.03.2017
GR08.03.2017
IS07.04.2017
Former [2017/31]LT07.12.2016
LV07.12.2016
NL07.12.2016
GR08.03.2017
Former [2017/28]LT07.12.2016
LV07.12.2016
GR08.03.2017
Former [2017/12]LV07.12.2016
Documents cited:Search[A] WO8909253  (FLS MILJOE A S et al.)
 [A] US4842834  (BURTON ALBERT A et al.)
 [I] US3864458  (ROBERTS ELLICOTT J et al.)
 [I] JPH11166187  (TOA NEKKEN KK et al.)
 [AD] WO02059526  (VATTENFALL AB et al.)
 [AD] US2004068988  (ANDERSON CHRISTER et al.)
 [I]   DATABASE CAPLUS TOA NEKKEN K.K.: "Additives for incineration of municipal refuses to reduce noxious emissions"
International search[X] JPH11166187  (TOA NEKKEN KK et al.)
 [X] JPH11166187  (TOA NEKKEN KK et al.) [X]
 [A] US3864458  (ROBERTS ELLICOTT J et al.) [A]
 [A] WO9803616  (ICA INNOCONSULT AG et al.) [A]
 [A] US2003014909  (SCHOFIELD KEITH et al.) [A]
 [A] US2004068988  (ANDERSON CHRISTER et al.) [A]
 [X]   DATABASE CAPLUS [online] TOA NEKKEN K.K.: "Additives for incineration of municipal refuses to reduce noxious emissions", XP003005489, accession no. STN Database accession no. (1999:392782) [X]
otherWO02059526
   MCQUARRIE D.A. ET AL: "General Chemistry, 3rd edition", W.H. FREEMAN AND COMPANY, NEW YORK, article "Oxidation-Reduction Reactions", pages: 758 - 761, XP003028515
OppositionWO8909253
 US4842834
 US3864458
 JPH11166187
 WO02059526
 DE4434942
 DE19802274
   DONALD A. MCQUARRIE, PETER A. ROCK: "General Chemistry Third Edition", 1984, W. H. FREEMAN AND COMPANY, New York, article "Chapter 21- Oxidation-Reduction Reactions", pages: vii-xii, 753, 760 - 761, XP055419200
   SPRAYING SYSTEMS CO.: "Dysor och Armatur Fr Vtskespridning", KATALOG 55, 1995, pages 9, XP055419203
   TRUEX ET AL.: "The thermal decomposition of aluminium sulfate", THERMOCHIMICA ACTA, vol. 19, no. 3, 1977, pages 301 - 304, XP026580850

DOI:   http://dx.doi.org/10.1016/0040-6031(77)80005-1
   AHO ET AL.: "Effective new chemicals to prevent corrosions due to chlorine in power plant superheaters", FUEL, vol. 87, 5 February 2008 (2008-02-05), pages 647 - 654, XP022455908

DOI:   http://dx.doi.org/10.1016/j.fuel.2007.05.033
   DATABASE Puchem Compound 8 August 2005 (2005-08-08), "Compound Summary for CID 24393; Iron (II) Sulfate", XP055419093, Database accession no. CID 24393
   JACEK GROMULSKI, ANNA HINDERSON, ANNIKA JOHANSSON ET AL.,: "Utvrdering av SNCR-anlggningar I ng- och Hetvattenpannor i Sverige", October 1994, ISSN: 0282-3772
   HENDERSON ET AL.: "The use of fuel additives in wood and waste wood-fired boilers to reduce corrosion and fouling problems", VGB POWERTECH, vol. 84, no. 6, 2004, pages 58 - 62, XP001197502
   PAMELA HENDERSON, KASSMAN HAKAN, ANDERSSON CHRISTER: "The use of ammonium sulphate in waste fired boilers to reduce superheater fouling and corrosion and NOx emissions", SWEDISH - FINNISH FLAME DAYS, 18 October 2005 (2005-10-18) - 19 October 2005 (2005-10-19), pages 1 - 12, XP055419146
   HAKAN KASSMAN: "THESIS FOR THE DEGREE OF DOCTOR OF PHILOSOPHY- Strategies to Reduce Gaseous KC1 and Chlorine in Deposits during Combustion of Biomass in Fluidised Bed Boilers", 2012, XP055419149, ISBN: 978-91-7-385667-6, Retrieved from the Internet
   HAO WU, MORTEN NEDERGAARD PEDERSEN, JACOB BOLL JESPERSEN, MARTTI AHO, JUHA ROPPO, FLEMMING JAPPE FRANDSEN, PETER GLARBORG: "Modeling the Use of Sulfate Additives for Potassium Chloride Destruction in Biomass Combustion", ENERGY FUELS, vol. 28, no. 1, 16 January 2014 (2014-01-16), pages 199 - 207, XP055419155

DOI:   http://dx.doi.org/10.1021/ef4015108
   SPRAYING SYSTEMS CO.: "Drop size distribution", 10 June 2016 (2016-06-10), pages 1, XP055419185
   JUHA ROPPO: "Statement of ferric sulfate operational experiences in UPM Caledonian paper mill HYBEX boiler (BFB) and theoretical background of the performance", VALMET BROCHURE, 17 December 2015 (2015-12-17), pages 1 - 9, XP055419188
   ROBERT H. PERRY, DON GREEN: "Perry's Chemical Engineers ' Handbook Sixth Edition", 1984, MCGRAW-HILL, INC., article "Liquid-Gas Systems", pages: 2pp, 18-54, XP055419193
   HKAN KASSMAN, FREDRIK NORMANN, LARS-ERIK MAND: "The effect of oxygen and volatile combustibles on the sulphation of gaseous KCl", COMBUSTION AND FLAME, vol. 160, October 2013 (2013-10-01), pages 2231 - 2241, XP055419195

DOI:   http://dx.doi.org/10.1016/j.combustflame.2013.04.018
The EPO accepts no responsibility for the accuracy of data originating from other authorities; in particular, it does not guarantee that it is complete, up to date or fit for specific purposes.