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DE3742051C1 - Method for monitoring flue gas desulphurisation plants - Google Patents

Method for monitoring flue gas desulphurisation plants

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Publication number
DE3742051C1
DE3742051C1 DE19873742051 DE3742051A DE3742051C1 DE 3742051 C1 DE3742051 C1 DE 3742051C1 DE 19873742051 DE19873742051 DE 19873742051 DE 3742051 A DE3742051 A DE 3742051A DE 3742051 C1 DE3742051 C1 DE 3742051C1
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DE
Germany
Prior art keywords
flue gas
drops
monitoring
measured
condensates
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.)
Expired
Application number
DE19873742051
Other languages
German (de)
Inventor
Des Erfinders Auf Nennung Verzicht
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Individual
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Individual
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Publication date
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Priority to DE19873742051 priority Critical patent/DE3742051C1/en
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Publication of DE3742051C1 publication Critical patent/DE3742051C1/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation 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
    • B01D53/34Chemical or biological purification of waste gases
    • B01D53/46Removing components of defined structure
    • B01D53/48Sulfur compounds
    • B01D53/50Sulfur oxides
    • B01D53/501Sulfur oxides by treating the gases with a solution or a suspension of an alkali or earth-alkali or ammonium compound
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N27/00Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
    • G01N27/02Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance
    • G01N27/04Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance
    • G01N27/06Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating resistance of a liquid

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Analytical Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Biochemistry (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Environmental & Geological Engineering (AREA)
  • Biomedical Technology (AREA)
  • Electrochemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Chemical & Material Sciences (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Treating Waste Gases (AREA)
  • Sampling And Sample Adjustment (AREA)

Abstract

It was found, surprisingly, that the rinse waters and/or condensates produced in the demisters situated at the end of the flue gas ducts can be used to monitor the flue gas desulphurisation plants. It is therefore proposed, according to the invention, that the purified gases be passed through demisters and that the rinse water and/or condensates draining therefrom be tested for their conductivity. Thus, early detection of any deterioration in demisting downstream of the flue gas desulphurisation plant is possible, and fouling (contamination) of the downstream flue gas ducts and components can be reduced.

Description

Es ist bekannt, die durch nasse Rauchgasentschwefelungs­ anlagen (REA) gereinigten Rauchgase zunächst über Tropfen­ abscheider zu leiten. In diesen zum Entschwefelungsver­ fahren gehörenden Tropfenabscheidern erfolgt die Abtrennung häufig mehrstufig, so daß von Grob- und Feinabscheidern ge­ sprochen wird. Nach dem Passieren der Feinabscheider wer­ den die entschwefelten, feuchten Rauchgase durch Kanäle entweder Kaminen oder Kühltürmen zur Ableitung zugeführt. In den Rauchgaskanälen bilden sich an Wänden, Einbauten und Umlenkungen erneut Tropfen. Bevor die Rauchgase in den Kühltürmen freigesetzt werden, werden diese erneut über Tropfenabscheider geführt.It is known to be caused by wet flue gas desulfurization plants (REA) cleaned flue gases first by drops to manage the separator. In these for desulfurization The droplet separators belonging to the driver are separated often multi-stage, so that from coarse and fine separators is spoken. After passing the fine separator who the desulfurized, moist smoke gases through channels either chimneys or cooling towers are fed for discharge. In the flue gas ducts, internals form on the walls and redirection drops again. Before the flue gases come in the cooling towers are released, they will again guided over droplet separators.

Durch die DE 35 20 380 A1 ist ein Verfahren zur Lang­ zeitbestimmung und Dauerüberwachung des Schadstoffgehal­ tes von gasgetragenen Aerosolen von mit Flüssigkeitsbe­ standteilen bzw. -tröpfchen beladenen Abgasströmen hin­ ter Rauchwäschern von Großfeuerungen oder Müllverbrennungs­ anlagen, mit isokinetischer Teilentnahme der Probe aus dem Aerosolstrom mittels Unterdrucks und mindestens teilweiser Beheizung der Entnahmesonde mit folgenden Verfahrensschrit­ ten bekannt:DE 35 20 380 A1 is a method for Lang Time determination and continuous monitoring of the pollutant content tes of gas-borne aerosols with liquids components or droplets loaded exhaust gas flows smoke washers from large combustion plants or waste incineration plants systems with isokinetic partial sampling of the Aerosol flow by means of negative pressure and at least partially Heating the sampling probe with the following process steps  known:

  • a) Verdampfen der Flüssigkeit in den Tröpfchen der abge­ saugten Aerosole durch weiteres Aufheizen über die Temperatur z. B. der Rauchgase hinaus,a) Evaporation of the liquid in the droplets of the abge sucked aerosols by further heating over the Temperature z. B. the flue gases,
  • b) kontinuierliches Abscheiden der gröberen Feststoffe, z. B. in einem Gaszyklon mit kontinuierlichem Ausschleu­ sen der abgeschiedenen Feststoffe, z. B. durch eine Takt­ schleuse und Überführen derselben in Sammelbehälter,b) continuous separation of the coarser solids, e.g. B. in a gas cyclone with continuous discharge sen the separated solids, e.g. B. by a clock sluice and transfer of the same into collecting containers,
  • c) kontinuierliches Abscheiden der Dämpfe durch Konden­ sation mit anschließenden Gaswaschstufen,c) continuous separation of the vapors by condensates station with subsequent gas washing stages,
  • d) Bestimmen der Schadstoffverteilung des Abgasstromes durch Eichmessungen des aus den Sammelbehältern, aus den Kondensations- und den Waschstufen gewonnenen Probenmaterials,d) determining the pollutant distribution of the exhaust gas flow by calibration measurements of the from the collection containers the condensation and washing stages Sample material,
  • e) Beschränkung der kontinuierlichen Schadstoffabtren­ nung nach Bestimmung der Schadstoffverteilung jeweils auf die Abscheidung der Feststoffe oder auf die konti­ nuierliche Abscheidung der Dämpfe oder/und die Gas­ waschstufen und Bilanzierung derselben.e) Limitation of continuous pollutant removal after determination of the pollutant distribution on the separation of the solids or on the conti Nuclear separation of the vapors and / or the gas washing stages and accounting for the same.

Es wurde überraschenderweise gefunden, daß die in den am Ende der Rauchgaskanäle befindlichen Tropfenabscheidern anfallenden Spülwässer und/oder Kondensate zur Überwachung der Rauchgasentschwefelungsanlagen herangezogen werden kön­ nen.It has surprisingly been found that the in the Drop separators located at the end of the flue gas ducts resulting rinse water and / or condensate for monitoring the flue gas desulphurization plants can be used  nen.

Erfindungsgemäß wird daher vorgeschlagen, daß die gereinigten Gase über Tropfenabscheider geleitet werden, deren ablaufen­ de Spülwässer und/oder Kondensate auf ihre Leitfähigkeit untersucht werden. Auf diese Weise kann eine Verschlech­ terung der Tropfenabscheidung nach der Rauchgasentschwefe­ lungsanlage frühzeitig erkannt und eine Verschmutzung der nachgeschalteten Rauchgaskanäle und Komponenten vermindert werden.According to the invention it is therefore proposed that the cleaned Gases are passed through droplet separators, the drain of which de rinsing water and / or condensates for their conductivity to be examined. In this way, a deterioration Drop separation after flue gas desulphurization system recognized early and contamination of the downstream flue gas ducts and components reduced will.

Die zur vorteilhaften Ausgestaltung der Erfindung dienenden Merkmale sind Gegenstand der Unteransprüche.Those used for the advantageous embodiment of the invention Features are the subject of the subclaims.

Die Überwachung kann durch Vergleich der elektrischen Leit­ fähigkeit des Spülwassers vor und nach dem Kontakt mit den Tropfen erfolgen. Neben der elektrischen Leitfähigkeit sind Konzentrationsmessungen von Protonen, Chlorid-Alkali- oder Erdalkaliionen möglich.Monitoring can be done by comparing the electrical conductors Ability of the rinse water before and after contact with the Drops. In addition to electrical conductivity Concentration measurements of protons, chloride-alkali or Alkaline earth ions possible.

In Fällen, in denen die Spülwässer der Tropfenabscheider nicht zur Messung herangezogen werden, sei es, weil sie nicht zugänglich sind, sei es, weil keine vorhanden sind, können zusätzliche Abscheider in den Rauchgasweg einge­ setzt werden. Diese kleinen Abscheider dienen der Ge­ winnung von Meßdaten aus Tropfen und können mit einer Spülung ausgerüstet sein, so daß auch hier Differenz­ messungen möglich sind.In cases where the rinse water of the droplet separator not be used for the measurement, be it because of it are not accessible, either because there are none, additional separators can be inserted into the flue gas path be set. These small separators serve the Ge  extraction of measurement data from drops and can be done with a Be flushed, so that here too difference measurements are possible.

Claims (6)

1. Verfahren zur Überwachung von Rauchgasentschwefelungs­ anlagen, dadurch gekennzeichnet, daß die gereinigten Gase über Tropfenabscheider geleitet werden, deren ablaufende Spülwässer und/oder Kondensate auf ihre Leitfähigkeit unter­ sucht werden.1. A method for monitoring flue gas desulfurization, characterized in that the cleaned gases are passed through droplet separators, the draining rinsing water and / or condensates are checked for their conductivity. 2. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Spülwässer und/oder Kondensate an den Tropfen­ abscheidern entnommen werden, die sich am Austritt der Reingase aus einem Kanal in einen Kühlturm befinden.2. The method according to claim 1, characterized in that that the rinse water and / or condensate on the drops separators that are located at the outlet of the Clean gases from a duct are located in a cooling tower. 3. Verfahren nach Anspruch 1 oder 2, dadurch gekenn­ zeichnet, daß im Rauchgasstrom nach der Rauchgasent­ schwefelungsanlage einfache Tropfenabscheider installiert werden, deren Spülwässer und/oder Kondensate gemessen werden.3. The method according to claim 1 or 2, characterized records that in the flue gas stream after the flue gas sulphurization plant installed simple droplet separator whose rinsing water and / or condensates are measured. 4. Verfahren nach Anspruch 1 oder einem der vorhergehenden, dadurch gekennzeichnet, daß die Zusammensetzung der abge­ schiedenen Tropfen gemessen wird.4. The method according to claim 1 or one of the preceding, characterized in that the composition of the abge  different drops is measured. 5. Verfahren nach Anspruch 1 oder einem der vorhergehenden, dadurch gekennzeichnet, daß das Spülwasser der Tropfenab­ scheider vor und nach Spülung gemessen wird und die Differenz der Leitfähigkeit als Leitgröße für die Überwachung der Ent­ schwefelungsanlage dient.5. The method according to claim 1 or one of the preceding, characterized in that the rinse water of the drops before and after rinsing is measured and the difference of conductivity as a guide for monitoring Ent sulfurization plant. 6. Verfahren nach Anspruch 1 oder einem der vorhergehenden, dadurch gekennzeichnet, daß die Differenz der Zusammen­ setzung der Spülwässer vor und nach Spülung der Tropfen­ abscheider gemessen und diese Differenz als Leitgröße für die Überwachung der Entschwefelungsanlage benutzt wird.6. The method according to claim 1 or one of the preceding, characterized in that the difference of the together Settling water before and after rinsing the drops measured separator and this difference as a guide for monitoring of the desulfurization plant is used.
DE19873742051 1987-12-11 1987-12-11 Method for monitoring flue gas desulphurisation plants Expired DE3742051C1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19873742051 DE3742051C1 (en) 1987-12-11 1987-12-11 Method for monitoring flue gas desulphurisation plants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19873742051 DE3742051C1 (en) 1987-12-11 1987-12-11 Method for monitoring flue gas desulphurisation plants

Publications (1)

Publication Number Publication Date
DE3742051C1 true DE3742051C1 (en) 1989-06-22

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408843C1 (en) * 1994-03-16 1995-07-06 Winter Fritz Eisengiesserei Scrubbing liq. conductivity measurement
CN113740197A (en) * 2021-06-29 2021-12-03 西安热工研究院有限公司 A system and method for evaluating the performance of a mist eliminator of a flue gas seawater desulfurization device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520380A1 (en) * 1984-06-14 1986-12-11 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for long-term determination and continuous monitoring of the pollutant content of gas-borne aerosols

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3520380A1 (en) * 1984-06-14 1986-12-11 Kernforschungszentrum Karlsruhe Gmbh, 7500 Karlsruhe Process for long-term determination and continuous monitoring of the pollutant content of gas-borne aerosols

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4408843C1 (en) * 1994-03-16 1995-07-06 Winter Fritz Eisengiesserei Scrubbing liq. conductivity measurement
CN113740197A (en) * 2021-06-29 2021-12-03 西安热工研究院有限公司 A system and method for evaluating the performance of a mist eliminator of a flue gas seawater desulfurization device

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