DE3435472A1 - Water flushing for demister packages downstream of flue gas desulphurisation plants - Google Patents

Water flushing for demister packages downstream of flue gas desulphurisation plants

Info

Publication number
DE3435472A1
DE3435472A1 DE19843435472 DE3435472A DE3435472A1 DE 3435472 A1 DE3435472 A1 DE 3435472A1 DE 19843435472 DE19843435472 DE 19843435472 DE 3435472 A DE3435472 A DE 3435472A DE 3435472 A1 DE3435472 A1 DE 3435472A1
Authority
DE
Germany
Prior art keywords
demister
water
flue gas
packages
washing
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.)
Granted
Application number
DE19843435472
Other languages
German (de)
Other versions
DE3435472C2 (en
Inventor
Heribert Dipl.-Ing. 4390 Gladbeck Dewert
Heinrich Ing.(grad.) 4600 Dortmund Gresch
Heinz Dipl.-Ing. Hölter
Heinrich Dipl.-Ing. 4390 Gladbeck Igelbüscher
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Priority to DE19843435472 priority Critical patent/DE3435472A1/en
Publication of DE3435472A1 publication Critical patent/DE3435472A1/en
Application granted granted Critical
Publication of DE3435472C2 publication Critical patent/DE3435472C2/de
Granted 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D45/00—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces
    • B01D45/04—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia
    • B01D45/08—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators
    • B01D45/10—Separating dispersed particles from gases or vapours by gravity, inertia, or centrifugal forces by utilising inertia by impingement against baffle separators which are wetted

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (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)
  • Treating Waste Gases (AREA)

Abstract

It is known to provide so-called demister packages downstream of wet flue gas desulphurisation plants. The demister packages are flushed with fresh water which conventionally has a comparatively high hardness. This has the consequence that the solids from the acid drops together with the water, which is used as flushing water and has a high hardness, lead to encrustations in the demister packages. In order to avoid these disadvantages, it is proposed according to the invention that the acidic scrubbing water is taken off from the flue gas scrubber region and is freed from solids via a water-solids separator (3) and with added carboxylic acids is used for washing the demister package (2) and is returned again to the demister washing circulation. Addition of carboxylic acids, preferably formic acid, adjusts the washing liquid which is used to clean the demister packages to a pH below 4. <IMAGE>

Description

Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application

Wasserspülung für Entneblerpakete hinter Rauchgasentschwefelungsanlagen ".Water rinsing for defogger packages behind flue gas desulphurisation systems ".

Es ist bekannt, daß hinter nassen Rauchgasentschwefelungsanlagen sogenannte Entneblerpakete angebracht werden müssen. Diese Tropfen beinhalten Feststoffe und sind in der Regel schwachsauer.It is known that so-called behind wet flue gas desulfurization systems Defogger packages need to be attached. These drops contain solids and are usually slightly acidic.

Zum Stand der Technik gehört, daß heute die Entneblerpakete mit Frischwasser bespült werden.Part of the state of the art is that today the defogger packs with fresh water be rinsed.

Frischwasser ist in der Regel neutral und teilweise auch kalkhaltig, d.h., es hat eine hohe Härte.Fresh water is usually neutral and sometimes also contains lime, i.e., it has a high hardness.

Es läßt sich leider nicht vermeiden, daß die Feststoffe aus den saueren Tropfen mit dem Wasser, das als plwaser benutzt wird und eine hohe tiä.rte aufweist, zu Inkrustierungen in den Entneblerpaketen fuhren.Unfortunately, it cannot be avoided that the solids from the acidic Drops with the water, which is used as a plwaser and has a high density, lead to incrustations in the defogger packages.

Es wid erfindungsgemäß vorgeschlagen, kein Frischwasser zu verwenden, sondern das Tropfenwasser aufzufangen, zu reinigen und dieses Wasser mit Ameisensaure zu versetzen, damit es nochmals in pN-Wert absinkt. Die Carbonsäure, vorzugsweise Ameisensaure, wirkt gleichzeitig kalklösend, und somit wird dann mit dem Waschwasser in aufbereiteter Form, d.h., keine Feststoffe und kalklösende Carbonsäure beinhaltend, das Entneblerpaket sauber gehalten.It is proposed according to the invention not to use fresh water, but to catch the drop of water, to clean it and this water with formic acid to move so that it drops again in pN value. The carboxylic acid, preferably Formic acid, at the same time has a limescale dissolving effect, and is then used with the washing water in processed form, i.e. not containing any solids or lime-dissolving carboxylic acids, the defogger package kept clean.

Weiterhin wird erfindungsgemäß durch diese Maßnahme erreicht, daß nicht ein Zusatzwasser in den Waschkreislauf zugegeben wird, um schluPendlich wieder ausgeschleust werden zu müssen, sondern hier wird aus dem Waschwasserkreislauf verwendetes Wasser aufbereitet und zur Spülung genutzt.Furthermore, it is achieved by this measure according to the invention that no additional water is added to the washing cycle in order to finally return To have to be discharged, but here is used from the wash water circuit Water treated and used for rinsing.

In der beiliegenden Zeichnung ist die Erfindung dargestellt: mit (1) ein Rauchgaswascher; it (2) en nachgeschaltetes Entneblerpaket; mit (3) ein Wasser-Beststoff-Trenner, £,.3. Dekanter; mit (4) die Carbonsäure-Impfung in der Pumpenleitung (5), die mit der Pumpe (6) zum Spülen des Entneblers eingesetzt ist.The invention is shown in the accompanying drawing: with (1) a flue gas washer; it (2) a downstream defogger package; with (3) a water-substance separator, £, .3. Decanter; with (4) the carboxylic acid vaccination in the pump line (5), which is used with the pump (6) for rinsing the defogger is.

P a t e n t a n s p r ü c h e : P a t e n t a n s p r ü c h e:

Claims (1)

Patentansprüche: Anspruch 1 Verfahren zur Reinigung von Tropfenabscheidern hinter Rauchgasentschwefelungsanlagen, dadurch gekennzeichnet, daß das sauere Waschwasser aus dem Bereich Rauchgaswäscher entnommen und über einen Wasser-Feststoff-Trenner, z.B. Dekanter (3), vom Feststoff befreit wird und mit Carbonsäuren versetzt zur Waschung des Entneblerpaketes genutzt und wieder in den Entneblerwaschkreislauf (3) bis (5) zurückgeführt wird.Claims: Claim 1 method for cleaning droplet separators behind flue gas desulfurization systems, characterized in that the acidic washing water Taken from the flue gas scrubber area and using a water-solids separator, e.g. decanter (3), is freed from solids and mixed with carboxylic acids for Washing of the defogger package used and back into the defogger washing cycle (3) to (5) is returned. Anspruch 2 Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß durch Zugabe von Carbonsäuren, vorzugsweise Ameisensäure, die Waschflüssigkeit, die zur Reinigung der Entneblerpakete genutzt wird, auf einen pH-Wert kleiner 4 eingestellt wird.Claim 2 The method according to claim 1, characterized in that by Addition of carboxylic acids, preferably formic acid, the washing liquid that is used for Cleaning of the defogger package is used, set to a pH value less than 4 will.
DE19843435472 1984-09-27 1984-09-27 Water flushing for demister packages downstream of flue gas desulphurisation plants Granted DE3435472A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19843435472 DE3435472A1 (en) 1984-09-27 1984-09-27 Water flushing for demister packages downstream of flue gas desulphurisation plants

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19843435472 DE3435472A1 (en) 1984-09-27 1984-09-27 Water flushing for demister packages downstream of flue gas desulphurisation plants

Publications (2)

Publication Number Publication Date
DE3435472A1 true DE3435472A1 (en) 1986-03-27
DE3435472C2 DE3435472C2 (en) 1988-04-14

Family

ID=6246501

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19843435472 Granted DE3435472A1 (en) 1984-09-27 1984-09-27 Water flushing for demister packages downstream of flue gas desulphurisation plants

Country Status (1)

Country Link
DE (1) DE3435472A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732191C1 (en) * 1987-09-24 1989-04-06 Steinmueller Gmbh L & C Method for treating the heat exchanger impinged with an ammonium sulphate-containing gas on washing
EP0316682A1 (en) * 1987-11-14 1989-05-24 BASF Aktiengesellschaft Process for the detachment of incrustations in moist eliminators
WO2023165129A1 (en) * 2022-03-04 2023-09-07 华电电力科学研究院有限公司 Demister blockage pre-control system and method, device, and medium

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
DE3011592A1 (en) * 1979-03-30 1980-10-30 Cottrell Res Inc METHOD FOR REMOVING SULFUR DIOXIDE FROM SMOKE 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
DE3011592A1 (en) * 1979-03-30 1980-10-30 Cottrell Res Inc METHOD FOR REMOVING SULFUR DIOXIDE FROM SMOKE GAS

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3732191C1 (en) * 1987-09-24 1989-04-06 Steinmueller Gmbh L & C Method for treating the heat exchanger impinged with an ammonium sulphate-containing gas on washing
EP0316682A1 (en) * 1987-11-14 1989-05-24 BASF Aktiengesellschaft Process for the detachment of incrustations in moist eliminators
WO2023165129A1 (en) * 2022-03-04 2023-09-07 华电电力科学研究院有限公司 Demister blockage pre-control system and method, device, and medium

Also Published As

Publication number Publication date
DE3435472C2 (en) 1988-04-14

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Legal Events

Date Code Title Description
OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
OP8 Request for examination as to paragraph 44 patent law
D2 Grant after examination
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee