DE3334388A1 - Apparatus for the process for improving the scrubbing out of SO2 downstream of fossil fuel power stations in the limestone process - Google Patents

Apparatus for the process for improving the scrubbing out of SO2 downstream of fossil fuel power stations in the limestone process

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Publication number
DE3334388A1
DE3334388A1 DE19833334388 DE3334388A DE3334388A1 DE 3334388 A1 DE3334388 A1 DE 3334388A1 DE 19833334388 DE19833334388 DE 19833334388 DE 3334388 A DE3334388 A DE 3334388A DE 3334388 A1 DE3334388 A1 DE 3334388A1
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Germany
Prior art keywords
limestone
suspension
washing
scrubbing
designed
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.)
Withdrawn
Application number
DE19833334388
Other languages
German (de)
Inventor
Heribert Dipl.-Ing. 4390 Gladbeck Dewert
Heinrich Ing.(grad.) 4600 Dortmund Gresch
Heinz Dipl.-Ing. Hölter
Heinrich Dipl.-Ing. 4390 Gladbeck Igelbüscher
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Individual
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Individual
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Publication date
Priority claimed from DE19833332894 external-priority patent/DE3332894A1/en
Application filed by Individual filed Critical Individual
Priority to DE19833334388 priority Critical patent/DE3334388A1/en
Publication of DE3334388A1 publication Critical patent/DE3334388A1/en
Withdrawn legal-status Critical Current

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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

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  • 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)

Abstract

The main application P 3332894.3 relates to a process for scrubbing acid flue gases, preferably downstream of fossil-fuelled boilers, according to which the base water is produced from a limestone and, depending on the degree of scrubbing out of, for example, greater than 90%, with alkali metal hydroxides or alkaline earth metal hydroxides, such as, for example, lime hydrate or carbide slurry, is additionally admixed to the base suspension. In order to optimise this process, it is proposed according to the invention that the first contacting scrubbing (2) with the untreated gas is designed as a limestone suspension scrubbing using a jet, where the scrubbing can be designed as parallel flow or counter-current scrubbing and in the second contact plane (3) is carried out by lime hydrate suspension. In the second contact plane (3), the scrubbing can alternatively be carried out by limestone plus lime hydrate suspension. <IMAGE>

Description

Beschreibung und. Erläuterung zur Zusatzpatentanmeldung "Vorrichtung zum Verfahren zur Verbesserung der SO2 - Auswaschung hinter Fossilkraftwerken beim Kalksteinverfahren" Zusatz zu P 33 32 894.3 In der Hauptanmeldung P 33 32 894.3 wird ein Verfahren uf Waschung von sauren Rauchgasen, vorzugsweise hinter fossilen Verbrennungskesseln beschrieben, nach dem das Basiswasser aus einem Kalkstein hergestellt wird. und je nach notwendigem oder gewünschtem Auswaschgrad von z.B. über 90 % mit Alkalihydroxyden bzw. Erdalkalihydroxyden, wie z.B. Kalkhydrat oder Karbidschlamm, der Basissusnension zusätzlich zugemischt wird.Description and. Explanation of the additional patent application "Device on the process to improve SO2 leaching behind fossil fuel power plants at Limestone process "Addition to P 33 32 894.3 In the main application P 33 32 894.3 a process is used to scrub acidic flue gases, preferably behind fossil fuels Combustion boilers described after which the base water is made from a limestone will. and depending on the required or desired degree of washing of e.g. over 90% Alkali hydroxides or alkaline earth hydroxides, such as hydrated lime or carbide sludge, is additionally added to the base rate.

Um dieses Verfahren besser za optimieren, wird eine Vorrichtung zur Durcifführung des Verfahrens entsprechend beiliegender Zeichnung angewandt.In order to better optimize this process, a contraption to carry out the procedure according to the attached drawing.

In der beiliegenden Zeichnung ist dargestellt: mit (y) das ankommende Rohgas; mit (2) die Kalksteinwaschebene, die dem Rohgas zuerst kontaktierend gegenüberliegt, egal, ob es ein Gleichstrom- oder Gegenstromwäscher ist; mit (3) die mit zusätzlichem Kalkhydrat angereicherte Waschsuspension, die als Sekundbrkontskt hinter der Kalksteineindüsung angebracht ist -vorzugsweise in einer zweiten Düsenebene; mit (4) der Reingasaustritt; mit (5) die Wassergastrennstufe.The attached drawing shows: with (y) the incoming one Raw gas; with (2) the limestone washing level, which is the first to contact the raw gas, no matter whether it is a cocurrent or countercurrent scrubber; with (3) those with additional Lime hydrate enriched washing suspension, which acts as a secondary contact behind the limestone injection is attached - preferably in a second nozzle plane; with (4) the clean gas outlet; with (5) the water gas separation stage.

So kann z.B. die Kalksteinsuspension bei (2) mit einem pB-Wert von z.B. kleiner 5,5 aufgegeben werden, wobei die Kalkhydratsuspension, die vorzugsweise auch zusätzlich in der Grundbasis mit Lanksteinsuspensionen versehen ist, mit einem pH-Wert kleiner 7 beaufschlagt wird.For example, the limestone suspension at (2) with a pB value of E.g. less than 5.5 are abandoned, with the hydrated lime suspension, which is preferably is also additionally provided with Lankstein suspensions in the base base, with a PH value less than 7 is applied.

Das Wasser wird unten in der Wassergastrennstufe (') aufenommen und über (4) als Reingas - vorzugsweise inner Entneblereinrichtungen - dem Zentralrohr z.3 zur Abführung in einen Kamin übergeben.The water is taken up in the water gas separation stage (') and via (4) as clean gas - preferably internal defogger devices - the central pipe z.3 handed over to a chimney for discharge.

Bei salzreicher Kohle ist es z.B. dienlich, daß der eigentlichen SO - Waschung eine Waschstufe zur Halogenwaschung (Chlor und Fluor) vorgeschaltet ist. Dieses ist jedoch unerheblich für die 502 -Waschung entsprechend der beschriebenen Vorrichtung zur Durchführung des erfindungsgemäßen Gedankens, indem zuerst mit dem Rohgas eine Kalkstein suspension kontaktiert wird und in der zweiten Sekundärkontaktierung eine Walksteinsuspension mit einer Kalkhydratsuspension gemischt zur Kontaktierung, d.h.In the case of salty coal, for example, it is useful that the actual SO - Washing is preceded by a washing stage for halogen washing (chlorine and fluorine). However, this is irrelevant for the 502 wash as described Apparatus for carrying out the idea of the invention by first using the Raw gas a limestone suspension is contacted and in the second secondary contact a whale stone suspension mixed with a hydrated lime suspension for contacting, i.e.

zur Auswaschung mit dem Rohgas, verwendet wird bzw. in der Waschdüsenebene (3) nur eine Kalkhydrat-Suspension Anwendung findet und in der ersten Waschstufe (2) die Kombination von Kalkstein plus Kalkhydrat als Suspensionseinsprühung Anwendung findet.for scrubbing with the raw gas or in the washing nozzle level (3) only a hydrated lime suspension is used and in the first washing stage (2) the combination of limestone plus hydrated lime as suspension injection Applies.

Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen dargestellte Ausbildungsform beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, das Rohgas zuerst mit einer Kalksteinsuspension zu konfrontieren und danach mit einer Suspension, die aus Kalkhydrat bzw. Kalkstein plus Kalkhydrat besteht, weiter zur Waschung von sauren Bestandteilen im Gas wie SO, und ähnlichen Rauchgasbegleitern zu beaufschlagen.Of course, the invention is not limited to the above in detail The form of training shown is limited, but there are numerous changes possible, but without deviating from the basic idea, the raw gas first with a Confront limestone suspension and then with a suspension made up of hydrated lime or limestone plus hydrated lime, further to wash away acidic components in the gas such as SO, and similar flue gas companions.

Zusatz - PatentansprücheAddition - claims

Claims (1)

Zusatz-P a t e n t a n s p r ü c h e: Anspruch 1 Verfahren und Vorrichtung zur Verbesserung der SO2 - Auswaschung hinter Fossilkraftwerken beim Kalksteinverfahren nach Hauptanmeldung P 33 32 894.3 dadurch gekennzeichnet, daß die erste kontaktierende Waschung (2) mit dem Rohgas als Kalksteinsuspensionswaschung mittels Düse ausgebildet ist, wobei die Waschung als Gleichstrom- oder auch ale Gegenstremwaschung ausgebildet sein kann und in der zweiten Kontaktebene (3) durch Kalakhydratsuspension vorgenommen wird Anspruch 2 Verwahren und Vorrichtung nach Anspruch 1 dadurch gekennzeichnet, daß die erste kontaktierende Waschung (2) mit dem Rohgas als Kalksteinsuspensionswaschung mittels Düse ausgebildet ist, wobei die Waschun@ ale Gleichstrom- oder auch als Gegens.tromw schung ausgebildet sein kann und in der zweiten Kontaktebene (3) durch Kalkstein plus Kalkhydratsuspension vorgenommen wird.Additional P a t e n t a n s p r ü c h e: Claim 1 method and device to improve the SO2 leaching behind fossil power plants in the limestone process according to main application P 33 32 894.3 characterized in that the first contacting Washing (2) with the raw gas designed as limestone suspension washing by means of a nozzle is, whereby the washing is designed as a cocurrent or also ale countercurrent washing can be and made in the second contact level (3) by Kalakhydratuspension claim 2 storage and device according to claim 1, characterized in that that the first contacting washing (2) with the raw gas as limestone suspension washing is formed by means of a nozzle, the washing unit @ ale direct current or also as Gegen.tromw schung can be formed and in the second contact level (3) by Limestone plus hydrated lime suspension is made. Ansrruch 3 Verfahren und çorrichtung nach Anspruch 1 und 2 dadurch gekennzeichnet, daß in der Diisenebene (2) Kalkstein plus Kalkhydrat als Suspension eingesprüht wird und in der Ebene (ci) nur eine Kalkhydratsusnension vorgenommen wird.Claim 3 method and device according to claims 1 and 2 thereby characterized that in the diisen plane (2) limestone plus hydrated lime as a suspension is sprayed and only one Kalkhydratsusnension is made in level (ci) will. Anspruch 4 Verfahren und Vorrichtung nach Anspruch 1 bis 3 dadurch zekennzeichnet, daß in der Sprühebene (2) und in der Sprühebene (3) eine suspension aus Kalkstein und Kalkhydrat eingesprüht wird.Claim 4 method and device according to claim 1 to 3 thereby ze indicates that in the spray level (2) and in the spray level (3) a suspension is sprayed from limestone and hydrated lime. Anspruch 5 Verfahren und Vorrichtung nach Anspruch 1 bis 4 dadurch gekennzeichnet, daß der eigentlichen SOp-Waschung eine Halogenwaschung (Ghlor und Fluor) vorgeschaltet ist,Claim 5 method and device according to claim 1 to 4 thereby characterized that the actual SOp washing is a halogen washing (Ghlor and Fluorine) is connected upstream,
DE19833334388 1983-09-13 1983-09-23 Apparatus for the process for improving the scrubbing out of SO2 downstream of fossil fuel power stations in the limestone process Withdrawn DE3334388A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833334388 DE3334388A1 (en) 1983-09-13 1983-09-23 Apparatus for the process for improving the scrubbing out of SO2 downstream of fossil fuel power stations in the limestone process

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833332894 DE3332894A1 (en) 1983-09-13 1983-09-13 Process for improving the scrubbing out of SO2 downstream of fossil-fuel power stations in the limestone process
DE19833334388 DE3334388A1 (en) 1983-09-13 1983-09-23 Apparatus for the process for improving the scrubbing out of SO2 downstream of fossil fuel power stations in the limestone process

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DE3334388A1 true DE3334388A1 (en) 1985-04-11

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410109A1 (en) * 1984-03-20 1985-10-03 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen WASHING TOWER FOR A SYSTEM FOR THE DESULFURATION OF SMOKE GASES

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2532373A1 (en) * 1975-07-19 1977-01-20 Heinz Hoelter METHOD AND DEVICE FOR PURIFYING SMOKE GASES AND OTHER EXHAUST GASES CONTAINING SULFUR DIOXYDE
DE3310716A1 (en) * 1983-03-24 1984-10-18 Uhde Gmbh, 4600 Dortmund Process for eliminating HCl and SO2 from flue gas

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2532373A1 (en) * 1975-07-19 1977-01-20 Heinz Hoelter METHOD AND DEVICE FOR PURIFYING SMOKE GASES AND OTHER EXHAUST GASES CONTAINING SULFUR DIOXYDE
DE3310716A1 (en) * 1983-03-24 1984-10-18 Uhde Gmbh, 4600 Dortmund Process for eliminating HCl and SO2 from flue gas

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3410109A1 (en) * 1984-03-20 1985-10-03 Gottfried Bischoff Bau kompl. Gasreinigungs- und Wasserrückkühlanlagen GmbH & Co KG, 4300 Essen WASHING TOWER FOR A SYSTEM FOR THE DESULFURATION OF SMOKE GASES

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