WO1997009111A1 - Verfahren und einrichtung zur nassen abscheidung saurer gase - Google Patents
Verfahren und einrichtung zur nassen abscheidung saurer gase Download PDFInfo
- Publication number
- WO1997009111A1 WO1997009111A1 PCT/AT1996/000156 AT9600156W WO9709111A1 WO 1997009111 A1 WO1997009111 A1 WO 1997009111A1 AT 9600156 W AT9600156 W AT 9600156W WO 9709111 A1 WO9709111 A1 WO 9709111A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- wet scrubber
- suspension
- liquid
- droplets
- washing
- Prior art date
Links
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
-
- 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
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
Definitions
- the invention relates to a method for the wet separation of acid gases, in particular S0 2 , HCl and H 2 S, from flue gases by means of alkaline or alkaline earth absorbents, limestone and / or dolomite, in which the flue gases are dissolved in a suspension and / or solution in droplets washed several stages and a device for performing the method.
- the invention has set itself the task of addressing this disadvantage and using inexpensive absorbents, such as limestone and / or dolomite, to achieve inexpensive separation for acidic flue gas components, in particular after power plant steam generators, the used absorbent being able to be disposed of without any problems.
- inexpensive absorbents such as limestone and / or dolomite
- the process according to the invention is characterized in that, seen in the direction of flow of the flue gases, these are countercurrent to the liquid droplets in a spray tower in the first stage and in the second stage cocurrent to the liquid droplets in a scrubber with one or more narrowed throats and prevention of the liquid return in the acceleration section is guided against the direction of gravity, the washing liquid being broken down into droplets before the acceleration section or at the beginning thereof, and the droplets in the second stage after a reaction zone with a preferred washing liquid / flue gas ratio ⁇ 51 / m 3 in approximately parallel and concentric channels deflected by 180 ° in the direction of gravity in a first droplet separator and then fed to another droplet separator.
- Embodiments of the method according to the invention are specified in subclaims 2-9.
- the device according to the invention for carrying out the method is characterized in that after a washing tower 1, a wet scrubber 2 with subsequent two-stage droplet separator 3, 4 is provided, in particular placed on the washing tower 1, a carbonate-containing suspension being used as the washing liquid for the absorption of the acidic gas components and that next to the washing tower 1 there is arranged a suspension tank 5 designed as an oxidation tank, the liquid level 11 of which is provided approximately at the level of the spray nozzles 23 of the wet scrubber 2 and the wet scrubber 2 throats 8 with a constriction of the gas flow between 0-50%, preferably 20 %, the grooves 8 being designed as pocket-shaped collecting channels with a tear-off edge 9.
- Embodiments of the device according to the invention are specified in subclaims 11 to 14.
- Fig. 1 shows a circuit diagram of the device according to the invention.
- FIG. 2 shows a simplified design of the wet scrubber and the first droplet separator in detail.
- Fig. 3 shows in simplified form a second design of the wet washer in detail.
- a wet scrubber 2 is placed on a washing tower 1, which is followed by a droplet separator in the form of two stages 3 and 4.
- a flue gas stream 17, 17 ', 17 "flows through this construction part from bottom to top, the acidic flue gas components, such as S0 2 , HCl, and H 2 S being removed therefrom.
- a line 18 ' also leads into the sump 13 of the wash tower 1, so that this too is supplied with a carboxylate suspension which is sprayed in via the circulation line 19 in the wash tower in the spray level 12, the flue gas stream 17 washed in countercurrent to the falling droplets and for one stage washing tower a good separation performance is achieved with about 50%.
- the washing liquid in the washing tower 1 can have a lower residual carbonate content than the wet scrubber 2.
- the degree of separation can be increased to over 99%.
- the wet washer 2 in FIG. 2 has narrowed fillets 8, the upper end of the fillet 8 being formed by a tear-off edge 9 which further narrows the fillet cross section.
- the throat 8 which is also referred to as the acceleration zone, has a small constriction between 0% and 50%, preferably 20%, of the flow cross section, so that a flow velocity of less than 23 m / s is achieved, which in the reaction zone is less than 18 m / s is reduced.
- the ratio of flue gas velocity in the acceleration zone to flue gas velocity in the reaction zone should be about 0.7.
- FIG. 3 shows the constriction or part of the throat 8 of the wet scrubber 2, the gas flow 17 being represented by flow lines 27.
- This gas flow is accelerated by the constriction and the subsequent diffuser 9 'in such a way that the liquid flowing out of the nozzle 23 touches the adjoining wall 25 as little as possible and the formation of wall water remains low.
- the desired droplet paths are designated by 26.
- the flue gas velocity in the throat 8 is below 18 m / s, in the reaction zone below 15 m / s.
- a drip catcher is arranged under the nozzle rows of the spray nozzles 23, but above the spray plane 12 of the washing tower 1.
- the above-mentioned flue gas speeds are sufficient for good separation and require little flow loss, so that the suction fan can be designed economically.
- the constriction of the flow channel improves the spray atomization of the washing liquid and at the same time directs the droplets into an approximately vertical trajectory, so that the proportion of wall water in the connected reaction zone is kept low.
- the distance after the throat 8 to the entry into the first droplet separator 3 serves as a reaction zone in which the acidic gas components are bound to the absorbent and sulfites, sulfates or chlorides form from the carbonate.
- the C0 2 released by the absorption medium is discharged with the flue gas stream.
- the subsequent first droplet separator 3 consists of several approximately parallel and concentric channels, in which the flue gas from the upward flow is deflected by 180 ° in the direction of gravity, the separated droplets being collected in pockets 24 at the ends of the guide plates 10, 10 'and one Feedback (which is not shown). It is essential for the droplet separation that the ratio of the distance between the guide plates 10 10 ′ in the deflection elbow to the radius of the curvature of the flow channel is less than 0.5, in particular 0.3.
- the gas flow 17 is accelerated by the constriction of the throats 8 such that the liquid flowing out of the spray nozzles 23 touches the adjoining wall 25 as little as possible and the formation of wall water remains low.
- the flue gas velocity in the throat 8 is depending after executing the throat below 18 m / s or below 23 m / s. This design enables the wall 25 to be dispensed with without the droplets of adjacent spray nozzles fusing to a large extent in the case of a plurality of spray nozzles 23 connected in parallel and the reaction zone being subjected to the best conditions.
- the spray nozzles 23 are mounted so that the washing liquid hits the throat 8 or at the beginning thereof and thus the washing liquid is broken down into droplets before or at the start of the acceleration path.
- the nozzle admission pressure should be between 0.5 and 1.5 bar and the nozzle jet should have a spray angle of less than 90 °.
- the throats 8 in FIG. 2 are designed as pocket-shaped collecting troughs from which the accumulated liquid is discharged.
- the tear-off edges 9 on the throats 8 are intended to disperse the wall water film formed in the acceleration zone in drops. This prevents the formation of large drops and no liquid runs down the throat 8. There must therefore be no catch cup for drops under the wet washer 2.
- the first stage of the droplet separator 3 has guide plates 10, 10 ' , the ratio of the distance between the guide plates 10, 10' of the channel in the deflection elbow to the radius of the curvature of the flow channel is less than 0.5 and the outer baffle 10 'is formed in the middle as a V-shaped groove with an opening angle> 90 °, so that the baffles 10, 10' form an angle with the horizontal at every point in the region of the reaction zone Include ⁇ of no greater than 45 °.
- the water loss in the entire wet scrubber remains limited to the evaporation losses and discharge losses of the CaCI 2 , as a result of which the water consumption is low. These evaporation losses are replaced by spraying and washing the second droplet separator 4 on both sides. The wash does not create incrustations. The dripping water arrives with the separated droplets in the return, not shown here, and thus again in the suspension container 5.
- a sludge is formed, which is essentially gypsum when using limestone as an absorption agent, which is applied to a drainage device 15 via a discharge device 14, the majority of the separated CaCl 2 - containing water is returned via line 20 to the sump 13.
- the sump 13 is supplied with an oxygen-containing gas by an oxidation stage 6.
- the gypsum itself can be reused in the building materials industry, depending on its purity, or can be deposited without difficulty.
- limestone containing magnesium carbonate such as dolomite
- magnesium sulfate is formed in addition to gypsum as a valuable by-product, which can be converted into gypsum and excreted by adding lime milk 16 in a subsequent precipitation 22, the resulting dissolved magnesium hydroxide together with the water cycle any added heavy metal catalysts are returned to the scrubber or discharged for sale. Part of the separated liquid leaves the reprecipitation 22 as waste water contaminated with CaCl 2 .
- ammonium sulfate can also be introduced into the wet scrubber, which improves the separation in the wet scrubber; the ammonium formed is removed from the outflowing washing liquid after addition of milk of lime in the precipitate 22 and subsequent stripping and finally returned to the wet scrubber.
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Health & Medical Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
- Gas Separation By Absorption (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DK96928269T DK0848640T3 (da) | 1996-09-05 | 1996-09-05 | Fremgangsmåde og indretning til vådudskillelse af sure gasser |
DE59601568T DE59601568D1 (de) | 1995-09-07 | 1996-09-05 | Verfahren und einrichtung zur nassen abscheidung saurer gase |
PL96325412A PL181890B1 (pl) | 1995-09-07 | 1996-09-05 | Sposób mokrego oddzielania kwasnych gazów i urzadzenie do mokrego oddzielania kwasnych gazów PL PL PL |
US09/029,136 US6235256B1 (en) | 1995-09-07 | 1996-09-05 | Process and device for the scrubbing acidic gases |
EP96928269A EP0848640B1 (de) | 1995-09-07 | 1996-09-05 | Verfahren und einrichtung zur nassen abscheidung saurer gase |
AU67808/96A AU6780896A (en) | 1995-09-07 | 1996-09-05 | Process and device for scrubbing acidic gases |
JP9510687A JPH11512022A (ja) | 1995-09-07 | 1996-09-05 | 酸性ガスの湿式分離法及びそのための装置 |
SI9620108A SI9620108A (sl) | 1995-09-07 | 1996-09-05 | Postopek in priprava za mokro izločanje kislih plinov |
BG102300A BG62276B1 (bg) | 1995-09-07 | 1998-03-06 | Метод и устройство за мокро отделяне на кисели газове |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
ATA1483/95 | 1995-09-07 | ||
AT0148395A AT402264B (de) | 1995-09-07 | 1995-09-07 | Verfahren und einrichtung zur nassen abscheidung saurer gase |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1997009111A1 true WO1997009111A1 (de) | 1997-03-13 |
Family
ID=3514884
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AT1996/000156 WO1997009111A1 (de) | 1995-09-07 | 1996-09-05 | Verfahren und einrichtung zur nassen abscheidung saurer gase |
Country Status (14)
Country | Link |
---|---|
US (1) | US6235256B1 (de) |
EP (1) | EP0848640B1 (de) |
JP (1) | JPH11512022A (de) |
KR (1) | KR19990044501A (de) |
CN (1) | CN1087967C (de) |
AT (1) | AT402264B (de) |
AU (1) | AU6780896A (de) |
BG (1) | BG62276B1 (de) |
CA (1) | CA2231432A1 (de) |
CZ (1) | CZ294128B6 (de) |
DE (1) | DE59601568D1 (de) |
PL (1) | PL181890B1 (de) |
SI (1) | SI9620108A (de) |
WO (1) | WO1997009111A1 (de) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1998016302A1 (en) * | 1996-10-17 | 1998-04-23 | ABB Fläkt AB | Method and apparatus for treating flue gas |
EP0879632A2 (de) * | 1997-05-23 | 1998-11-25 | Mitsubishi Heavy Industries, Ltd. | Gas-Flüssigkeit Kontaktvorrichtung |
WO1999024148A1 (en) * | 1997-11-11 | 1999-05-20 | Mitsubishi Heavy Industries, Ltd. | A wet gas processing method and the apparatus using the same |
EP0945164A1 (de) * | 1997-10-07 | 1999-09-29 | Nkk Corporation | Verfahren zur nassentschwefelung von abgasen |
EP2489421A1 (de) * | 2011-02-18 | 2012-08-22 | Alstom Technology Ltd | Nasswäscher zum Reinigen eines Abgases, beinhaltend einen Gasverteiler mit Diffuser |
CN104492109A (zh) * | 2014-12-30 | 2015-04-08 | 南通三圣石墨设备科技股份有限公司 | 蒸发器高效气液分离器 |
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WO2004076034A1 (en) * | 2003-02-24 | 2004-09-10 | Vandine Robert W | Gas scrubbing reagent and methods for using same |
CN100363683C (zh) * | 2005-11-21 | 2008-01-23 | 孙克勤 | 烟气脱硫组合式烟道 |
AU2007247899A1 (en) * | 2006-05-05 | 2007-11-15 | Plascoenergy Ip Holdings, S.L., Bilbao, Schaffhausen Branch | A gas conditioning system |
WO2010021994A1 (en) * | 2008-08-18 | 2010-02-25 | Furnary Kevin P | Scrubber for removing pollutants from flue gas |
CN104645763B (zh) * | 2014-04-24 | 2017-04-05 | 广西铟泰科技有限公司 | 铟精炼废气治理方法 |
CN104857830B (zh) * | 2015-05-20 | 2016-09-14 | 北京化工大学常州先进材料研究院 | 一种烟气脱硫装置 |
CN104874275A (zh) * | 2015-05-20 | 2015-09-02 | 北京化工大学常州先进材料研究院 | 一种烟气脱硫方法 |
RS58132B1 (sr) * | 2015-06-01 | 2019-02-28 | Rudis Poslovno Zdruzenje Za Inzeniring In Izgradnjo Objektov D O O Trbovlje | Proces i aparati za čišćenje dimnog gasa visokih performansi |
PL3401003T3 (pl) * | 2017-05-11 | 2020-07-27 | General Electric Technology Gmbh | Płuczka wieżowa do oczyszczania na mokro z płytami między dyszami do odsiarczania gazów spalinowych i usuwania cząstek stałych metodą mokrą |
AT520534B1 (de) * | 2018-04-19 | 2019-05-15 | Andritz Ag Maschf | Anlage zur Absorption von Einzelkomponenten aus Gasen |
CN108619880A (zh) * | 2018-07-24 | 2018-10-09 | 中电环保科技发展有限公司 | 一种垃圾干燥烟气处理装置及其工艺 |
CN110624387A (zh) * | 2019-09-25 | 2019-12-31 | 粟发明 | 一种利用煤渣制备碱液并代替脱硫剂的方法 |
TWI699234B (zh) * | 2019-11-21 | 2020-07-21 | 財團法人工業技術研究院 | 微粒捕集裝置 |
JP7323052B2 (ja) * | 2020-03-06 | 2023-08-08 | 富士電機株式会社 | 排ガス処理装置および液体排出ユニット |
CN112755659B (zh) * | 2020-12-30 | 2023-12-22 | 华南理工大学 | 一种多重涡流烟气除雾收水装置及方法 |
CN113521959B (zh) * | 2021-07-28 | 2023-11-03 | 王秀梅 | 一种甲醛清除仪器 |
CN114308968B (zh) * | 2021-11-25 | 2023-03-28 | 无锡荣浦科技有限公司 | 一种有害气体化学实验室用的低噪音自动化通风清洁装置 |
CN117379807B (zh) * | 2023-10-11 | 2024-03-12 | 湖北圣灵科技有限公司 | 一种戊二醛合成用吡喃生产系统 |
CN117443161A (zh) * | 2023-12-14 | 2024-01-26 | 北京飞燕石化环保科技发展有限公司 | 一种恶臭气体治理装置 |
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DE3031951A1 (de) * | 1979-08-29 | 1981-03-26 | Ciba-Geigy Ag, Basel | Anlage zur entfernung gasfoermiger und fester schadstoffe sowie nebel aus einem abgas |
EP0162536A1 (de) * | 1984-02-20 | 1985-11-27 | Babcock-Hitachi Kabushiki Kaisha | Apparat für die nasse Rauchgasentschwefelung |
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- 1995-09-07 AT AT0148395A patent/AT402264B/de not_active IP Right Cessation
-
1996
- 1996-09-05 PL PL96325412A patent/PL181890B1/pl not_active IP Right Cessation
- 1996-09-05 KR KR1019980701749A patent/KR19990044501A/ko not_active Application Discontinuation
- 1996-09-05 SI SI9620108A patent/SI9620108A/sl not_active IP Right Cessation
- 1996-09-05 EP EP96928269A patent/EP0848640B1/de not_active Expired - Lifetime
- 1996-09-05 DE DE59601568T patent/DE59601568D1/de not_active Expired - Lifetime
- 1996-09-05 AU AU67808/96A patent/AU6780896A/en not_active Abandoned
- 1996-09-05 CN CN96196821A patent/CN1087967C/zh not_active Expired - Fee Related
- 1996-09-05 CZ CZ1998636A patent/CZ294128B6/cs not_active IP Right Cessation
- 1996-09-05 JP JP9510687A patent/JPH11512022A/ja active Pending
- 1996-09-05 US US09/029,136 patent/US6235256B1/en not_active Expired - Lifetime
- 1996-09-05 CA CA002231432A patent/CA2231432A1/en not_active Abandoned
- 1996-09-05 WO PCT/AT1996/000156 patent/WO1997009111A1/de active IP Right Grant
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1998
- 1998-03-06 BG BG102300A patent/BG62276B1/bg unknown
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6562303B1 (en) | 1996-10-17 | 2003-05-13 | Alstom Power Sweden Holding Ab | Method and apparatus for treating flue gas |
WO1998016302A1 (en) * | 1996-10-17 | 1998-04-23 | ABB Fläkt AB | Method and apparatus for treating flue gas |
EP0879632A2 (de) * | 1997-05-23 | 1998-11-25 | Mitsubishi Heavy Industries, Ltd. | Gas-Flüssigkeit Kontaktvorrichtung |
EP0879632A3 (de) * | 1997-05-23 | 1999-03-31 | Mitsubishi Heavy Industries, Ltd. | Gas-Flüssigkeit Kontaktvorrichtung |
TR199800907A3 (tr) * | 1997-05-23 | 1999-10-21 | Mitsubishi Heavy Industries, Ltd. | Gaz-sivi temasi saglayan tertibat. |
US6001154A (en) * | 1997-05-23 | 1999-12-14 | Mitsubishi Heavy Industries, Ltd. | Gas-liquid contact apparatus |
EP0945164A1 (de) * | 1997-10-07 | 1999-09-29 | Nkk Corporation | Verfahren zur nassentschwefelung von abgasen |
EP0945164A4 (de) * | 1997-10-07 | 1999-12-08 | Nippon Kokan Kk | Verfahren zur nassentschwefelung von abgasen |
WO1999024148A1 (en) * | 1997-11-11 | 1999-05-20 | Mitsubishi Heavy Industries, Ltd. | A wet gas processing method and the apparatus using the same |
EP2489421A1 (de) * | 2011-02-18 | 2012-08-22 | Alstom Technology Ltd | Nasswäscher zum Reinigen eines Abgases, beinhaltend einen Gasverteiler mit Diffuser |
WO2012110871A1 (en) * | 2011-02-18 | 2012-08-23 | Alstom Technology Ltd | A wet scrubber for cleaning an effluent gas |
US8728420B2 (en) | 2011-02-18 | 2014-05-20 | Alstom Technology Ltd | Wet scrubber for cleaning an effluent gas |
AU2012219177B2 (en) * | 2011-02-18 | 2015-07-09 | General Electric Technology Gmbh | A wet scrubber for cleaning an effluent gas |
RU2556664C2 (ru) * | 2011-02-18 | 2015-07-10 | Альстом Текнолоджи Лтд | Мокрый скруббер для очистки отходящего газа |
CN104492109A (zh) * | 2014-12-30 | 2015-04-08 | 南通三圣石墨设备科技股份有限公司 | 蒸发器高效气液分离器 |
Also Published As
Publication number | Publication date |
---|---|
AT402264B (de) | 1997-03-25 |
CN1196001A (zh) | 1998-10-14 |
BG102300A (en) | 1998-09-30 |
CZ294128B6 (cs) | 2004-10-13 |
JPH11512022A (ja) | 1999-10-19 |
KR19990044501A (ko) | 1999-06-25 |
PL181890B1 (pl) | 2001-10-31 |
US6235256B1 (en) | 2001-05-22 |
EP0848640A1 (de) | 1998-06-24 |
DE59601568D1 (de) | 1999-05-06 |
SI9620108A (sl) | 1998-06-30 |
AU6780896A (en) | 1997-03-27 |
CA2231432A1 (en) | 1997-03-13 |
CN1087967C (zh) | 2002-07-24 |
EP0848640B1 (de) | 1999-03-31 |
PL325412A1 (en) | 1998-07-20 |
ATA148395A (de) | 1996-08-15 |
BG62276B1 (bg) | 1999-07-30 |
CZ63698A3 (cs) | 1998-08-12 |
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