DE102010026175A1 - Method for relaxing and cleaning excessive quench water of ash-containing fuel gasification device, involves restoring fraction of sludge in expansion container, where sludge is removed at clarifier and fed by filter system - Google Patents
Method for relaxing and cleaning excessive quench water of ash-containing fuel gasification device, involves restoring fraction of sludge in expansion container, where sludge is removed at clarifier and fed by filter system Download PDFInfo
- Publication number
- DE102010026175A1 DE102010026175A1 DE102010026175A DE102010026175A DE102010026175A1 DE 102010026175 A1 DE102010026175 A1 DE 102010026175A1 DE 102010026175 A DE102010026175 A DE 102010026175A DE 102010026175 A DE102010026175 A DE 102010026175A DE 102010026175 A1 DE102010026175 A1 DE 102010026175A1
- Authority
- DE
- Germany
- Prior art keywords
- sludge
- liquid phase
- thickener
- clarifier
- quench water
- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/52—Treatment of water, waste water, or sewage by flocculation or precipitation of suspended impurities
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F2001/007—Processes including a sedimentation step
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/18—Nature of the water, waste water, sewage or sludge to be treated from the purification of gaseous effluents
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J2300/00—Details of gasification processes
- C10J2300/16—Integration of gasification processes with another plant or parts within the plant
- C10J2300/169—Integration of gasification processes with another plant or parts within the plant with water treatments
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10J—PRODUCTION OF PRODUCER GAS, WATER-GAS, SYNTHESIS GAS FROM SOLID CARBONACEOUS MATERIAL, OR MIXTURES CONTAINING THESE GASES; CARBURETTING AIR OR OTHER GASES
- C10J3/00—Production of combustible gases containing carbon monoxide from solid carbonaceous fuels
- C10J3/46—Gasification of granular or pulverulent flues in suspension
- C10J3/466—Entrained flow processes
Abstract
Description
Die Erfindung betrifft ein Verfahren zur Entspannung und Reinigung von überschüssigem Quenchwasser einer aschehaltige Brennstoffe vergasenden Vergasungseinrichtung.The invention relates to a method for the expansion and purification of excess quench water of a ash-containing fuel gasifying gasification.
Das bei der Flugstromvergasung anfallende überschüssige Restquenchwasser (
Durch die beschriebene Entspannung gelangt neben dem verdampften Wasseranteil auch das in der Flüssigkeit unter Druck gebundene Kohlendioxyd (CO2) in die entstandenen Brüden. Damit verschiebt sich das Kalk-Kohlensäureverhältnis in der entspannten Flüssigkeit und der pH-Wert steigt auf Werte über 8. Damit werden Karbonate gebildet und es kommt zum Aufbau fest haftender Ablagerungen und Aufschichtungen besonders in der ersten Entspannungsstufe (
Die oben genannten Ablagerungen und Verkrustungen können nur mechanisch entfernt werden. Ein chemisches Ablösen mittels Säure (wie zum Beispiel HCL) würde den Einsatz von teuren Werkstoffen, die gegen Säure beständig sind, erfordern. Zur Reinigung muss die betroffene Rußwasserentspannungslinie außer Betrieb gebracht und zwischenzeitlich auf den so genannten Bypass umgeschaltet werden, einer Rußwasserabkühlung mit nachfolgender Entspannung, die von zwei oder mehr Vergasungslinien gemeinsam, jedoch nicht zur gleichen Zeit, genutzt werden kann. Nach Abschaltung der Rußwasser-Linie und einer manuellen Reinigung der beiden Abscheidebehälter und ggf. der betroffenen Leitungen kann die Rußwasserentspannung nach entsprechender Inertisierung wieder in Betrieb genommen werden. Das zwischenzeitlich genutzte Bypass-System ist abzufahren, zu spülen und ggf. manuell zu reinigen. All das bedeutet einen hohen manuellen und zeitlichen Aufwand. Dazu muss erwähnt werden, dass es zu Verfügbarkeitseinbußen kommt, wenn es während der Benutzung des Rußwasser-Bypasses zu einer Störung in einer weiteren Rußwasserentspannungslinie kommt.The above deposits and incrustations can only be removed mechanically. Chemical release by acid (such as HCL) would require the use of expensive acid-resistant materials. For cleaning, the affected Rußwasserentspannungslinie must be taken out of service and switched in the meantime on the so-called bypass, a Rußwasserabkühlung with subsequent relaxation, which can be shared by two or more gasification lines, but not at the same time. After switching off the soot water line and a manual cleaning of the two separation tanks and possibly the affected lines, the Rußwasserentspannung can be put back into operation after appropriate inerting. The bypass system that has since been used must be shut down, rinsed and possibly cleaned manually. All this means a high manual and temporal effort. It should be noted that there is a loss of availability if it comes during use of the soot water bypass to a disturbance in another Rußwasserentspannungslinie.
Der Erfindung Liegt das Problem zugrunde für ein Verfahren zur Entspannung und Reinigung von überschüssigem Quenchwasser einer aschehaltige Brennstoffe vergasenden Vergasungseinrichtung anzugeben, wie der Aufbau fest haftender Ablagerungen und Aufschichtungen von Karbonaten besonders in der ersten Entspannungsstufe in einfacher Art und Weise erheblich reduziert werden kann.The invention is based on the problem for a process for the relaxation and purification of excess quench of a ash-containing fuels gasifying gasification device indicate how the structure of adherent deposits and laminations of carbonates can be significantly reduced, especially in the first expansion stage in a simple manner.
Das Problem wird durch die Merkmale des Anspruchs 1 gelöst.The problem is solved by the features of
Durch die erfindungsgemäße Maßnahme einer Rückführung eines Teiles des erzeugten Schlammes aus der Feststoffabscheidung, dem Eindicker/Lamellenklärer in den ersten Entspannungsbehälter bewirken die im Schlamm enthaltenen Kristallisationskeime ein Ausfällen des Karbonates, wodurch die Ablagerungen des Karbonates an der Behälterwandung der ersten Entspannungsstufe (
Die derart aus der ersten Entspannungsstufe (
Das Einbringen der zusätzlichen Feststoffe und Restschlämme (
Die Eingabe des Schlammes kann auch so ausgeführt werden, dass ein entsprechender Energieeintrag in das Flüssigkeitsvolumen erfolgt.The input of the sludge can also be carried out so that a corresponding energy input into the liquid volume takes place.
Durch die erfindungsgemäße Schlammrückführung in die erste Entspannungsstufe (
Eine Nachrüstung bereits vorhandener Anlagen mit der erfindungsgemäßen Schlammrückführung in die erste Entspannungsstufe (
Vorteilhafte Weiterbildungen der Erfindung sind in den Unteransprüchen angegeben.Advantageous developments of the invention are specified in the subclaims.
Die Erfindung wird im Folgenden als Ausführungsbeispiel in einem zum Verständnis erforderlichen Umfang anhand einer Figur näher erläutert. Dabei zeigt:The invention is explained in more detail below as an exemplary embodiment in a scope necessary for understanding with reference to a figure. Showing:
Der im Eindicker/Lamellenklärer (
BezugszeichenlisteLIST OF REFERENCE NUMBERS
- 11
- RestquenchwasserRestquenchwasser
- 22
- Abscheidebehälterseparating vessel
- 33
- Entspannungsbehälterexpansion tank
- 44
- Eindicker/LamellenklärerThickener / lamella
- 55
- Entwässerungsstufedewatering stage
- 66
- KreislaufwasserCirculation water
- 77
- Bruchteil des Filtrats der EntwässerungFraction of the filtrate of drainage
- 88th
- Rußwasseraufbereitung mit FlockungshilfsmittelSoot water treatment with flocculation aid
- 99
- SchlammabzugspumpeSludge removal pump
- 1010
- SchlammstapelbehälterSludge storage tank
Claims (5)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010026175A DE102010026175B4 (en) | 2010-07-06 | 2010-07-06 | Mud recycling in the flash process |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102010026175A DE102010026175B4 (en) | 2010-07-06 | 2010-07-06 | Mud recycling in the flash process |
Publications (2)
Publication Number | Publication Date |
---|---|
DE102010026175A1 true DE102010026175A1 (en) | 2012-01-12 |
DE102010026175B4 DE102010026175B4 (en) | 2012-05-03 |
Family
ID=45372325
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE102010026175A Expired - Fee Related DE102010026175B4 (en) | 2010-07-06 | 2010-07-06 | Mud recycling in the flash process |
Country Status (1)
Country | Link |
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DE (1) | DE102010026175B4 (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5415673A (en) * | 1993-10-15 | 1995-05-16 | Texaco Inc. | Energy efficient filtration of syngas cooling and scrubbing water |
DE102008012965A1 (en) * | 2008-03-06 | 2009-09-17 | Uhde Gmbh | Method and device for the treatment of fluid streams resulting from the gasification |
DE102008028003A1 (en) * | 2008-06-12 | 2009-12-24 | Meri Entsorgungstechnik für die Papierindustrie GmbH | Process for continuous cleaning of process water in the paper industry, comprises contacting the process water to be cleaned in an anaerobic reactor with anaerobic microorganisms in order to reduce impurities in waste water |
DE102009030717A1 (en) * | 2009-06-26 | 2010-12-30 | Siemens Aktiengesellschaft | Method for decompressing gas saturated and dust loaded quench water, involves indirectly cooling quench water at specific degree by adding cold water before decompressing, where pressure of quench water is of specific value |
-
2010
- 2010-07-06 DE DE102010026175A patent/DE102010026175B4/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5415673A (en) * | 1993-10-15 | 1995-05-16 | Texaco Inc. | Energy efficient filtration of syngas cooling and scrubbing water |
DE102008012965A1 (en) * | 2008-03-06 | 2009-09-17 | Uhde Gmbh | Method and device for the treatment of fluid streams resulting from the gasification |
DE102008028003A1 (en) * | 2008-06-12 | 2009-12-24 | Meri Entsorgungstechnik für die Papierindustrie GmbH | Process for continuous cleaning of process water in the paper industry, comprises contacting the process water to be cleaned in an anaerobic reactor with anaerobic microorganisms in order to reduce impurities in waste water |
DE102009030717A1 (en) * | 2009-06-26 | 2010-12-30 | Siemens Aktiengesellschaft | Method for decompressing gas saturated and dust loaded quench water, involves indirectly cooling quench water at specific degree by adding cold water before decompressing, where pressure of quench water is of specific value |
Also Published As
Publication number | Publication date |
---|---|
DE102010026175B4 (en) | 2012-05-03 |
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R016 | Response to examination communication | ||
R016 | Response to examination communication | ||
R018 | Grant decision by examination section/examining division | ||
R020 | Patent grant now final |
Effective date: 20120804 |
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R081 | Change of applicant/patentee |
Owner name: SIEMENS ENERGY GLOBAL GMBH & CO. KG, DE Free format text: FORMER OWNER: SIEMENS AKTIENGESELLSCHAFT, 80333 MUENCHEN, DE |
|
R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |