SE514592C2 - Förfarande och anordning för rökgasrening med släckning av kalk i omedelbar anslutning till rökgasreningen - Google Patents

Förfarande och anordning för rökgasrening med släckning av kalk i omedelbar anslutning till rökgasreningen

Info

Publication number: SE514592C2
Authority: SE; Sweden
Prior art keywords: lime; slaked lime; mixing; flue gases; water
Prior art date: 1998-05-18

Application number

SE9801734A

Other languages

English (en)

Swedish (sv)

Other versions

SE9801734D0 (sv

SE9801734L (sv

Inventor

Stefan Aahman

Nils Bringfors

Original Assignee

Flaekt Ab

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.)

1998-05-18

Filing date

1998-05-18

Publication date

2001-03-19

1998-05-18 Application filed by Flaekt Ab filed Critical Flaekt Ab

1998-05-18 Priority to SE9801734A priority Critical patent/SE514592C2/sv

1998-05-18 Publication of SE9801734D0 publication Critical patent/SE9801734D0/xx

1999-05-12 Priority to PCT/SE1999/000806 priority patent/WO1999059704A1/en

1999-05-12 Priority to DE69942399T priority patent/DE69942399D1/de

1999-05-12 Priority to ES07108766T priority patent/ES2346252T3/es

1999-05-12 Priority to DK07108766.2T priority patent/DK1857167T3/da

1999-05-12 Priority to AT07108766T priority patent/ATE468166T1/de

1999-05-12 Priority to DE69936722T priority patent/DE69936722T2/de

1999-05-12 Priority to PT99928295T priority patent/PT1087832E/pt

1999-05-12 Priority to RU2000131603/12A priority patent/RU2209657C2/ru

1999-05-12 Priority to JP2000549361A priority patent/JP4112177B2/ja

1999-05-12 Priority to DK99928295T priority patent/DK1087832T3/da

1999-05-12 Priority to EP07108766A priority patent/EP1857167B1/de

1999-05-12 Priority to CA002332152A priority patent/CA2332152C/en

1999-05-12 Priority to CZ20004285A priority patent/CZ300312B6/cs

1999-05-12 Priority to ES99928295T priority patent/ES2291033T3/es

1999-05-12 Priority to AU45393/99A priority patent/AU738601B2/en

1999-05-12 Priority to CN99806325.8A priority patent/CN1132665C/zh

1999-05-12 Priority to PL99344244A priority patent/PL194642B1/pl

1999-05-12 Priority to EP99928295A priority patent/EP1087832B8/de

1999-05-12 Priority to AT99928295T priority patent/ATE368501T1/de

1999-05-20 Priority to TW088108286A priority patent/TW457117B/zh

1999-11-19 Publication of SE9801734L publication Critical patent/SE9801734L/xx

2000-11-15 Priority to US09/712,189 priority patent/US6508994B1/en

2001-03-19 Publication of SE514592C2 publication Critical patent/SE514592C2/sv

Links

239000003546 flue gas Substances 0.000 title claims abstract description 87
235000008733 Citrus aurantifolia Nutrition 0.000 title claims abstract description 48
235000011941 Tilia x europaea Nutrition 0.000 title claims abstract description 48
239000004571 lime Substances 0.000 title claims abstract description 48
UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 39
238000000034 method Methods 0.000 title claims abstract description 19
238000000746 purification Methods 0.000 title claims description 21
AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims abstract description 91
239000000920 calcium hydroxide Substances 0.000 claims abstract description 90
235000011116 calcium hydroxide Nutrition 0.000 claims abstract description 90
229910001861 calcium hydroxide Inorganic materials 0.000 claims abstract description 90
XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 61
ODINCKMPIJJUCX-UHFFFAOYSA-N Calcium oxide Chemical compound [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims abstract description 50
238000002156 mixing Methods 0.000 claims abstract description 46
239000000292 calcium oxide Substances 0.000 claims abstract description 25
235000012255 calcium oxide Nutrition 0.000 claims abstract description 25
238000007599 discharging Methods 0.000 claims abstract description 5
239000000463 material Substances 0.000 claims description 27
239000000126 substance Substances 0.000 claims description 22
238000010791 quenching Methods 0.000 claims description 14
230000000171 quenching effect Effects 0.000 claims description 14
239000000203 mixture Substances 0.000 claims description 13
230000001143 conditioned effect Effects 0.000 claims description 9
238000004140 cleaning Methods 0.000 abstract description 7
239000002250 absorbent Substances 0.000 description 16
230000002745 absorbent Effects 0.000 description 15
230000003750 conditioning effect Effects 0.000 description 13
RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 12
230000015572 biosynthetic process Effects 0.000 description 12
238000003860 storage Methods 0.000 description 12
238000001179 sorption measurement Methods 0.000 description 7
VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 6
IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 6
229910000041 hydrogen chloride Inorganic materials 0.000 description 6
238000010276 construction Methods 0.000 description 4
239000012535 impurity Substances 0.000 description 4
238000011065 in-situ storage Methods 0.000 description 4
239000013618 particulate matter Substances 0.000 description 4
238000006243 chemical reaction Methods 0.000 description 3
239000000356 contaminant Substances 0.000 description 3
239000003344 environmental pollutant Substances 0.000 description 3
231100000719 pollutant Toxicity 0.000 description 3
230000001105 regulatory effect Effects 0.000 description 3
CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
238000002485 combustion reaction Methods 0.000 description 2
238000005516 engineering process Methods 0.000 description 2
238000004519 manufacturing process Methods 0.000 description 2
239000002245 particle Substances 0.000 description 2
239000007787 solid Substances 0.000 description 2
UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 description 1
BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 description 1
238000010521 absorption reaction Methods 0.000 description 1
230000002378 acidificating effect Effects 0.000 description 1
230000032683 aging Effects 0.000 description 1
210000000988 bone and bone Anatomy 0.000 description 1
239000001110 calcium chloride Substances 0.000 description 1
229910001628 calcium chloride Inorganic materials 0.000 description 1
239000001569 carbon dioxide Substances 0.000 description 1
229910002092 carbon dioxide Inorganic materials 0.000 description 1
230000006835 compression Effects 0.000 description 1
238000007906 compression Methods 0.000 description 1
238000007796 conventional method Methods 0.000 description 1
238000001816 cooling Methods 0.000 description 1
239000000428 dust Substances 0.000 description 1
-1 etc. Substances 0.000 description 1
238000001914 filtration Methods 0.000 description 1
239000010881 fly ash Substances 0.000 description 1
239000002803 fossil fuel Substances 0.000 description 1
239000007788 liquid Substances 0.000 description 1
238000012986 modification Methods 0.000 description 1
230000004048 modification Effects 0.000 description 1
230000009257 reactivity Effects 0.000 description 1
238000004064 recycling Methods 0.000 description 1
239000004753 textile Substances 0.000 description 1
238000004056 waste incineration Methods 0.000 description 1

Classifications

- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/501—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
- B01D53/504—Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound characterised by a specific device
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/508—Sulfur oxides by treating the gases with solids
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/68—Halogens or halogen compounds
- B01D53/685—Halogens or halogen compounds by treating the gases with solids
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/40—Alkaline earth metal or magnesium compounds
- B01D2251/404—Alkaline earth metal or magnesium compounds of calcium

Landscapes

Engineering & Computer Science (AREA)
Chemical & Material Sciences (AREA)
Health & Medical Sciences (AREA)
Biomedical Technology (AREA)
Environmental & Geological Engineering (AREA)
Analytical Chemistry (AREA)
General Chemical & Material Sciences (AREA)
Oil, Petroleum & Natural Gas (AREA)
Chemical Kinetics & Catalysis (AREA)
Treating Waste Gases (AREA)
Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)

SE9801734A 1998-05-18 1998-05-18 Förfarande och anordning för rökgasrening med släckning av kalk i omedelbar anslutning till rökgasreningen SE514592C2 (sv)

Priority Applications (22)

Application Number	Priority Date	Filing Date	Title
SE9801734A SE514592C2 (sv)	1998-05-18	1998-05-18	Förfarande och anordning för rökgasrening med släckning av kalk i omedelbar anslutning till rökgasreningen
AT99928295T ATE368501T1 (de)	1998-05-18	1999-05-12	Verfahren und vorrichtung zur reinigung von abgasen
DK99928295T DK1087832T3 (da)	1998-05-18	1999-05-12	Fremgangsmåde og anordning til rensning af röggasser
CA002332152A CA2332152C (en)	1998-05-18	1999-05-12	Method and apparatus for cleaning flue gases
ES07108766T ES2346252T3 (es)	1998-05-18	1999-05-12	Procedimiento y dispositivo para la depuracion de gases de combustion.
DK07108766.2T DK1857167T3 (da)	1998-05-18	1999-05-12	Fremgangsmåde og indretning til rensning af røggasser
AT07108766T ATE468166T1 (de)	1998-05-18	1999-05-12	Verfahren und vorrichtung zur reinigung von abgasen.
DE69936722T DE69936722T2 (de)	1998-05-18	1999-05-12	Verfahren und vorrichtung zur reinigung von abgasen
PT99928295T PT1087832E (pt)	1998-05-18	1999-05-12	Método e aparelho para purificação de gases de combustão
RU2000131603/12A RU2209657C2 (ru)	1998-05-18	1999-05-12	Способ и устройство для очистки дымовых газов
JP2000549361A JP4112177B2 (ja)	1998-05-18	1999-05-12	煙道ガスの浄化方法及び装置
PCT/SE1999/000806 WO1999059704A1 (en)	1998-05-18	1999-05-12	Method and apparatus for cleaning flue gases
EP07108766A EP1857167B1 (de)	1998-05-18	1999-05-12	Verfahren und Vorrichtung zur Reinigung von Abgasen.
DE69942399T DE69942399D1 (de)	1998-05-18	1999-05-12	Verfahren und Vorrichtung zur Reinigung von Abgasen.
CZ20004285A CZ300312B6 (cs)	1998-05-18	1999-05-12	Zpusob cištení kourových plynu a zarízení k jeho provádení
ES99928295T ES2291033T3 (es)	1998-05-18	1999-05-12	Procedimiento y dispositivo para la depuracion de gases de combustion.
AU45393/99A AU738601B2 (en)	1998-05-18	1999-05-12	Method and apparatus for cleaning flue gases
CN99806325.8A CN1132665C (zh)	1998-05-18	1999-05-12	清洁烟气的方法与设备
PL99344244A PL194642B1 (pl)	1998-05-18	1999-05-12	Sposób i urządzenie do oczyszczania gazów spalinowych
EP99928295A EP1087832B8 (de)	1998-05-18	1999-05-12	Verfahren und vorrichtung zur reinigung von abgasen
TW088108286A TW457117B (en)	1998-05-18	1999-05-20	Method and apparatus for cleaning flue gases
US09/712,189 US6508994B1 (en)	1998-05-18	2000-11-15	Method and apparatus for cleaning flue gases

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
SE9801734A SE514592C2 (sv)	1998-05-18	1998-05-18	Förfarande och anordning för rökgasrening med släckning av kalk i omedelbar anslutning till rökgasreningen

Publications (3)

Publication Number	Publication Date
SE9801734D0 SE9801734D0 (sv)	1998-05-18
SE9801734L SE9801734L (sv)	1999-11-19
SE514592C2 true SE514592C2 (sv)	2001-03-19

Family

ID=20411348

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
SE9801734A SE514592C2 (sv)	1998-05-18	1998-05-18	Förfarande och anordning för rökgasrening med släckning av kalk i omedelbar anslutning till rökgasreningen

Country Status (17)

Country	Link
US (1)	US6508994B1 (de)
EP (2)	EP1857167B1 (de)
JP (1)	JP4112177B2 (de)
CN (1)	CN1132665C (de)
AT (2)	ATE368501T1 (de)
AU (1)	AU738601B2 (de)
CA (1)	CA2332152C (de)
CZ (1)	CZ300312B6 (de)
DE (2)	DE69936722T2 (de)
DK (2)	DK1857167T3 (de)
ES (2)	ES2291033T3 (de)
PL (1)	PL194642B1 (de)
PT (1)	PT1087832E (de)
RU (1)	RU2209657C2 (de)
SE (1)	SE514592C2 (de)
TW (1)	TW457117B (de)
WO (1)	WO1999059704A1 (de)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
SE523667C2 (sv) *	2002-09-20	2004-05-11	Alstom Switzerland Ltd	Förfarande och anordning för avskiljning av gasformiga föroreningar från varma gaser medelst partikelformigt absorbentmaterial samt blandare för befuktning av absorbentmaterialet
US6818043B1 (en) *	2003-01-23	2004-11-16	Electric Power Research Institute, Inc.	Vapor-phase contaminant removal by injection of fine sorbent slurries
EP1815903B1 (de) *	2006-02-06	2008-08-06	ALSTOM Technology Ltd	Verfahren und Vorrichtung zur Steuerung der Absorption von gasförmigen Verunreinigungen aus heissen Prozessgasen
RU2321445C2 (ru) *	2006-04-13	2008-04-10	Государственное образовательное учреждение высшего профессионального образования "Курский государственный технический университет"	Насадка для очистки дымовых газов
CN100418613C (zh) *	2006-11-17	2008-09-17	北京科技大学	一种密相循环流化脱硫设备
DE102007057401A1 (de) *	2007-11-27	2009-05-28	Friedrich Hellmich	Verfahren zur Aufbereitung von Sorptionsmaterial bei der Rauchgasreinigung in Ziegeleien
US7766997B2 (en)	2007-12-21	2010-08-03	Alstom Technology Ltd	Method of reducing an amount of mercury in a flue gas
DE102008014893A1 (de) *	2008-03-19	2009-09-24	Fels-Werke Gmbh	Rauchgasreinigungsverfahren und Kalkhydrat für Rauchgasreinigungsverfahren
US20100011841A1 (en) *	2008-07-17	2010-01-21	Mogawer Walaa S	Apparatus and methods for testing asphalt mix workability
FR2969011B1 (fr)	2010-12-15	2014-08-29	Lab Sa	Procede et installation d'epuration de fumees de combustion
FR2995539B1 (fr)	2012-09-20	2014-09-19	Lab Sa	Procede et installation d'epuration de fumees et de production d'electricite
EP3269692B1 (de)	2016-07-11	2024-06-26	Andritz Aktiebolag	Integrierter kalkhydrator
CN111032192A (zh)	2017-09-06	2020-04-17	勒瓦研究开发股份有限公司	在cds烟道气处理中用于处理烟道气的方法
CN115364656A (zh) *	2022-10-08	2022-11-22	江苏林康高新技术有限公司	一种用于烟气脱酸的消石灰计量喷射系统

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4604269A (en) *	1985-03-22	1986-08-05	Conoco Inc.	Flue gas desulfurization process
SE460642B (sv)	1987-03-06	1989-11-06	Flaekt Ab	Foerfarande foer att absorbera gasformiga komponenter ur foersurade roekgaser
DE3806798A1 (de) *	1988-03-03	1989-09-14	Metallgesellschaft Ag	Verfahren zur kontinuierlichen trockenloesung von kalk
DE3844217C2 (de)	1988-12-29	1997-03-27	Ftu Gmbh	Verfahren zur Herstellung von Calciumhydroxiden und deren Verwendung
FI83166B (fi) *	1989-02-15	1991-02-28	Imatran Voima Oy	Reningsmetod foer roekgaser och anlaeggning foer rening av roekgaser.
FI83167C (fi) *	1989-07-19	1991-06-10	Tampella Oy Ab	Foerfarande foer rening av roekgaser och anordning daerfoer.
DE4101439A1 (de) *	1990-01-18	1991-08-01	Mitsubishi Heavy Ind Ltd	Verfahren fuer ofeninterne entschwefelung
SE501037C2 (sv) *	1993-03-12	1994-10-24	Flaekt Ab	Sätt och anordning för rening av rökgas som innehåller klorväte och svaveldioxid
DE4405010C2 (de) *	1994-02-17	1997-07-17	Hoelter Abt Gmbh	Verfahren zur Reinigung eines Verbrennungsabgases
SE504440C2 (sv) *	1994-11-28	1997-02-10	Flaekt Ab	Sätt att avskilja gasformiga föroreningar från varma processgaser
RU2095130C1 (ru) *	1995-04-03	1997-11-10	Акционерное общество "АВИСМА титано-магниевый комбинат"	Способ очистки газов от хлора и хлористого водорода
SE506249C2 (sv) *	1996-04-04	1997-11-24	Flaekt Ab	Anordning för utmatning och fördelning av ett absorbentmaterial i en rökgaskanal
ZA987217B (en) *	1997-08-15	2000-02-14	Cominco Eng Services	Chloride assisted hydrometallurgical extraction of metal from sulphide or laterite ores.

1998
- 1998-05-18 SE SE9801734A patent/SE514592C2/sv not_active IP Right Cessation
1999
- 1999-05-12 PL PL99344244A patent/PL194642B1/pl unknown
- 1999-05-12 EP EP07108766A patent/EP1857167B1/de not_active Expired - Lifetime
- 1999-05-12 CN CN99806325.8A patent/CN1132665C/zh not_active Expired - Lifetime
- 1999-05-12 CZ CZ20004285A patent/CZ300312B6/cs not_active IP Right Cessation
- 1999-05-12 JP JP2000549361A patent/JP4112177B2/ja not_active Expired - Fee Related
- 1999-05-12 AU AU45393/99A patent/AU738601B2/en not_active Ceased
- 1999-05-12 AT AT99928295T patent/ATE368501T1/de not_active IP Right Cessation
- 1999-05-12 DE DE69936722T patent/DE69936722T2/de not_active Expired - Lifetime
- 1999-05-12 DK DK07108766.2T patent/DK1857167T3/da active
- 1999-05-12 CA CA002332152A patent/CA2332152C/en not_active Expired - Fee Related
- 1999-05-12 EP EP99928295A patent/EP1087832B8/de not_active Expired - Lifetime
- 1999-05-12 ES ES99928295T patent/ES2291033T3/es not_active Expired - Lifetime
- 1999-05-12 AT AT07108766T patent/ATE468166T1/de active
- 1999-05-12 DK DK99928295T patent/DK1087832T3/da active
- 1999-05-12 ES ES07108766T patent/ES2346252T3/es not_active Expired - Lifetime
- 1999-05-12 WO PCT/SE1999/000806 patent/WO1999059704A1/en not_active Ceased
- 1999-05-12 DE DE69942399T patent/DE69942399D1/de not_active Expired - Lifetime
- 1999-05-12 RU RU2000131603/12A patent/RU2209657C2/ru not_active IP Right Cessation
- 1999-05-12 PT PT99928295T patent/PT1087832E/pt unknown
- 1999-05-20 TW TW088108286A patent/TW457117B/zh not_active IP Right Cessation
2000
- 2000-11-15 US US09/712,189 patent/US6508994B1/en not_active Expired - Lifetime

Also Published As

Publication number	Publication date
TW457117B (en)	2001-10-01
DE69942399D1 (de)	2010-07-01
SE9801734D0 (sv)	1998-05-18
JP2002515321A (ja)	2002-05-28
EP1857167A1 (de)	2007-11-21
ES2346252T3 (es)	2010-10-13
CN1301190A (zh)	2001-06-27
RU2209657C2 (ru)	2003-08-10
DE69936722D1 (de)	2007-09-13
CA2332152C (en)	2007-01-09
US6508994B1 (en)	2003-01-21
EP1087832B8 (de)	2007-11-28
ATE368501T1 (de)	2007-08-15
CA2332152A1 (en)	1999-11-25
DK1857167T3 (da)	2010-09-06
CN1132665C (zh)	2003-12-31
PL194642B1 (pl)	2007-06-29
EP1857167B1 (de)	2010-05-19
PT1087832E (pt)	2007-10-29
AU4539399A (en)	1999-12-06
EP1087832A1 (de)	2001-04-04
DK1087832T3 (da)	2007-12-10
PL344244A1 (en)	2001-10-08
CZ300312B6 (cs)	2009-04-15
AU738601B2 (en)	2001-09-20
JP4112177B2 (ja)	2008-07-02
ATE468166T1 (de)	2010-06-15
WO1999059704A1 (en)	1999-11-25
DE69936722T2 (de)	2008-04-30
EP1087832B1 (de)	2007-08-01
CZ20004285A3 (cs)	2001-08-15
SE9801734L (sv)	1999-11-19
ES2291033T3 (es)	2008-02-16

Legal Events

Date	Code	Title	Description
2018-07-03	NUG	Patent has lapsed

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US7524470B2 (en)	2009-04-28	Reduced liquid discharge in wet flue gas desulfurization
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