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DE2917379A1 - Dry purificn. of waste gas evolved by refuse incinerators - where calcium cpds. obtd. are mixed with water, cement, and/or water glass to form insol solid - Google Patents

Dry purificn. of waste gas evolved by refuse incinerators - where calcium cpds. obtd. are mixed with water, cement, and/or water glass to form insol solid

Info

Publication number
DE2917379A1
DE2917379A1 DE19792917379 DE2917379A DE2917379A1 DE 2917379 A1 DE2917379 A1 DE 2917379A1 DE 19792917379 DE19792917379 DE 19792917379 DE 2917379 A DE2917379 A DE 2917379A DE 2917379 A1 DE2917379 A1 DE 2917379A1
Authority
DE
Germany
Prior art keywords
water
cement
solid
purificn
insol
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Withdrawn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
DE19792917379
Other languages
German (de)
Inventor
Heinz Ing Grad Gresch
Heinz Ing Grad Hoelter
Heinrich Ing Grad Igelbuescher
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 DE19792917379 priority Critical patent/DE2917379A1/en
Publication of DE2917379A1 publication Critical patent/DE2917379A1/en
Withdrawn legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
    • C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
    • C04B18/00—Use of agglomerated or waste materials or refuse as fillers for mortars, concrete or artificial stone; Treatment of agglomerated or waste materials or refuse, specially adapted to enhance their filling properties in mortars, concrete or artificial stone
    • C04B18/04—Waste materials; Refuse
    • C04B18/06—Combustion residues, e.g. purification products of smoke, fumes or exhaust gases
    • C04B18/10—Burned or pyrolised refuse
    • C04B18/105—Gaseous combustion products or dusts collected from waste incineration, e.g. sludge resulting from the purification of gaseous combustion products of waste incineration
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
    • Y02W30/00—Technologies for solid waste management
    • Y02W30/50—Reuse, recycling or recovery technologies
    • Y02W30/91—Use of waste materials as fillers for mortars or concrete

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Environmental & Geological Engineering (AREA)
  • Ceramic Engineering (AREA)
  • Civil Engineering (AREA)
  • Materials Engineering (AREA)
  • Structural Engineering (AREA)
  • Organic Chemistry (AREA)
  • Processing Of Solid Wastes (AREA)

Abstract

The purificn. process produces reaction prod. which are a mixt. (I) of a Ca(OH)2, CaCl2, and CaSO4; and mixt. (I) is converted into a solid prod. (II), insol. in water, by the addn. of water, cement, and/or water-glass. The addns. pref. also include a retarder which delays setting, and a lubricant, e.g. a suspension, so the mixt. can be pumped prior to setting. The final mixt. is pref. pelletised and/1r used to form a solid crust functioning as a seal on the top surface of a rubbish dump.

Description

Beschreibung und Et'ãterung ur PatentanmeldungDescription and description of patent application

'Verfestigung der Reaktionsprodukte aus der Reinigung von Abgasen aus Abfallverbrennungsanlagen nach dem Trocken-Gas-Reinigungsverfahren vorzugsweise in pumpfähige Substanzen, die sich nach der Aushärtung verfestigen'.'' Solidification of the reaction products from the cleaning of exhaust gases from waste incineration plants using the dry gas cleaning process, preferably into pumpable substances that solidify after hardening '.

Bei der Anwendung von trockenen Gasreinigungsverfahren zur Reinigung von Abgasen aus Abfall-Verbrennungsanlagen fällt als zu beseitigendes Produkt ein Gemisch aus nicht umgesetztem Kalkhydrat und den Reaktionsprodukten Calciumchlorid und Calciumsulfat an.When using dry gas cleaning methods for cleaning of waste gases from waste incineration plants occurs as a product to be disposed of Mixture of unreacted hydrated lime and the reaction products calcium chloride and calcium sulfate.

Es ist ein staubförmiges Produkt, das bei der Ablagerung ohne vorhergehende Behandlung erhebliche Schwierigkeiten bereitet.It is a powdery product that when deposited without prior Treatment causes considerable difficulties.

Besonders problematisch ist das in diesen Gemisch vorhandene, im hohen Maße wasserlösliche Calciumchlorid.What is particularly problematic is that which is present in this mixture, in the high Dimensions of water-soluble calcium chloride.

Es wurde gefunden, daß sich der Altkalk günstig mit Zement und Wasser und/oder Wasserglas in eine pumpfähige Masse wandeln läßt und diese pumpfähige Masse z. B. zur Verfestigung von Deponieanlagen benutzt werden kann.It has been found that the old lime is cheap with cement and water and / or water glass can be converted into a pumpable mass and this pumpable mass z. B. can be used to solidify landfill systems.

Bei der Verfestigung entsteht ein hartes, wasserunlösliches Produkt.Solidification creates a hard, water-insoluble product.

Bei einer Zugabe von 10 bis 30 % Zement und einer entsprechenden Wasserglasbeimengung zu dem chemisorbierenden Kalkhydrat verfestigt sich der Altkalk innerhalb von ca. 1/2 Stunde bis zu 1 Stunde zu einem harten, wasserunlöslichen Produkt.With an addition of 10 to 30% cement and a corresponding addition of water glass The old lime solidifies to the chemisorbing hydrated lime within approx. 1/2 hour to 1 hour to a hard, water-insoluble product.

Die Reaktion ist bei Zugabe von Wasser, bedingt durch die Wärmeentwicklung bei der Aufnahme von Wasser, durch Calciumchlorid sehr ausgeprägt.When water is added, the reaction is due to the generation of heat when absorbing water, very pronounced due to calcium chloride.

Es kommt zu einem Temperaturanstieg bis mehr als 60 OC.The temperature rises to more than 60 OC.

Bei diesen Temperaturen erstarrt das Gemisch in der vorgegebenen Zeit von 30 bis 60 Minuten.At these temperatures, the mixture solidifies within the specified time from 30 to 60 minutes.

Zur Dämpfung der Reaktion können natürlich Zuschlagstoffe beigegeben werden, die nicht nur aus Wasserglas bestehen.Of course, additives can be added to dampen the reaction that are not just made of water glass.

Zuschlagmittel, wie Flugstaub, Schlacke, Stäube, Salze und dergleichen, können gefahrlos beigemengt werden.Aggregates such as fly ash, slag, dust, salts and the like, can be added safely.

Dem Wasser können folgende Zuschlagstoffe zugegeben werden, z. B. salzhaltige Abwässer oder auch Suspensionen.The following additives can be added to the water, e.g. B. saline wastewater or suspensions.

Je nach der Entfernung der Deponie können Abbindeverzögerer dem Wasser zugemischt werden.Depending on the distance from the landfill, setting retarders can be added to the water are mixed in.

Die verschiedenen Schlämme können auch als Aufsprühsuspension zur Abdichtung von Deponieschichten angewandt werden oder aber in Pelletsform zum Zuge der separaten Ablagerung Anwendung finden.The various slurries can also be used as a spray-on suspension Sealing of landfill layers can be used or in pellet form the separate deposit apply.

Das Aufsprühen in Sonderdeponie-Anlagen kann sehr dienlich sein, um wasserlösliche Verbindungen nicht in das Grundwasser oder Sickerwasser eindringen zu lassen.Spraying in special landfill systems can be very useful in order to water-soluble compounds do not penetrate into the groundwater or seepage water allow.

Es ist grundsätzlich möglich, wasserlösliche Problemabfälle auf Deponien aufzubringen und sie mit der vorgeschriebenen Paste zu bekrusten.In principle, it is possible to send problematic water-soluble waste to landfills to apply and to crust them with the prescribed paste.

Selbstverständlich ist die Erfindung nicht auf die vorstehend im einzelnen beschriehenen Verfahrensgange beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne jedoch von dem Grundgedanken abzuweichen, umgesetzte Reaktionsstoffe wie Kalkhydrat oder dergleichen zur Verfestigung mit Wasser, Zement und/oder Wasserglas einmal zu pelletisieren und/oder in eine pumpfähige Masse zu wandeln, die ffir Überkrustungseffekte Anwendung finden können.Of course, the invention is not limited to the above in detail The procedural course described is limited, but there are numerous amendments possible without however of that Deviating basic ideas, implemented Reaction substances such as hydrated lime or the like for solidification with water, cement and / or to pelletize water glass once and / or to form a pumpable mass that can be used for encrustation effects.

Patentansprüche:Patent claims:

Claims (1)

Patentans2rüche: Anspruchfl) Verfahren zur Verfestigung der Reaktionsprodukte nach der trockenen Reinigung von Abgasen aus Abfallverbrennungsanlagen dadurch gekennzeichnet, daß das anfallende Gemisch aus Kalkhydrat, Calciumchlorid und Calciumsulfat durch Zugabe von Wasser, Zement und/oder Wasserglas-Gemisch zu einem wasserunlöslichen festen Produkt verfestigt wird.Claims: A process for solidifying the reaction products characterized after dry cleaning of exhaust gases from waste incineration plants, that the resulting mixture of hydrated lime, calcium chloride and calcium sulfate through Adding water, cement and / or waterglass mixture to a water-insoluble one solid product is solidified. Anspruch -2 Verfahren nach Anspruch 1 dadurch gekennzeichnet, daß dem Abfallstoff Zement und/oder Wasserglas mit einem Bindeverzögerer und Gleitmittel, z. B. Suspensionen zur Verbesserung der Pumpfähigkeit, zugesetzt werden.Claim -2 method according to claim 1, characterized in that the waste material cement and / or water glass with a binding retarder and lubricant, z. B. suspensions to improve the pumpability can be added. Anspruch3 Verfahren nach Anspruch 1 und 2 dadurch gekennzeichnet, daß die vorbeschriebene Masse pelletisiert wird.Claim 3 Method according to Claims 1 and 2, characterized in that that the above-described mass is pelletized. Anspruch 4 Verfahren nach Anspruch 1 bis 3 dadurch gekennzeichnet, daß die vorbeschriebene Masse auch zur abdichtenden Krustierung der Deponie-Massen benutzt wird.Claim 4, method according to claims 1 to 3, characterized in that that the above-described mass is also used to seal the crusting of the landfill masses is used.
DE19792917379 1979-04-28 1979-04-28 Dry purificn. of waste gas evolved by refuse incinerators - where calcium cpds. obtd. are mixed with water, cement, and/or water glass to form insol solid Withdrawn DE2917379A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19792917379 DE2917379A1 (en) 1979-04-28 1979-04-28 Dry purificn. of waste gas evolved by refuse incinerators - where calcium cpds. obtd. are mixed with water, cement, and/or water glass to form insol solid

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19792917379 DE2917379A1 (en) 1979-04-28 1979-04-28 Dry purificn. of waste gas evolved by refuse incinerators - where calcium cpds. obtd. are mixed with water, cement, and/or water glass to form insol solid

Publications (1)

Publication Number Publication Date
DE2917379A1 true DE2917379A1 (en) 1980-11-13

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148430A3 (en) * 1983-12-29 1986-02-26 Gebr. Knauf Westdeutsche Gipswerke Kg Method of making a water-tight site for dumping
DE3443722A1 (en) * 1984-11-30 1986-06-12 Foerster Guenther Process for the thermal disposal of halogen compounds, in particular wastes containing chlorine compounds forming dioxins, phosgene and polychlorinated biphenyls and fluidised-bed reactor for carrying it out
DE3833676A1 (en) * 1988-10-04 1990-04-05 Petri Juergen Dipl Ing Dr Process for the final storage of bound waste materials
DE3909060A1 (en) * 1989-03-18 1990-09-20 Pahl Ekke Dipl Ing Process for the making inert (inerting) of combustion residues and also natural and industrial sediments
DE4105562A1 (en) * 1991-02-22 1992-08-27 Hoelter Heinz Conversion of toxic halogenated organic cpds. from incinerator filter dust - comprises adding glycol to alkaline e.g. filter dust or absorption material and adding water-glass to agglomerate
EP0684087A4 (en) * 1993-11-15 1996-02-28 Kanegafuchi Chemical Ind WASTE DISPOSAL METHOD.

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2100627B2 (en) * 1970-01-08 1974-07-11 Environmental Sciences, Inc., Pittsburgh, Pa. (V.St.A.) Process for solidifying waste of any kind
DE2461640A1 (en) * 1974-01-02 1975-07-10 Chemfix Inc PROCEDURE FOR DISPOSAL OF MUELL

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2100627B2 (en) * 1970-01-08 1974-07-11 Environmental Sciences, Inc., Pittsburgh, Pa. (V.St.A.) Process for solidifying waste of any kind
DE2461640A1 (en) * 1974-01-02 1975-07-10 Chemfix Inc PROCEDURE FOR DISPOSAL OF MUELL

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0148430A3 (en) * 1983-12-29 1986-02-26 Gebr. Knauf Westdeutsche Gipswerke Kg Method of making a water-tight site for dumping
DE3443722A1 (en) * 1984-11-30 1986-06-12 Foerster Guenther Process for the thermal disposal of halogen compounds, in particular wastes containing chlorine compounds forming dioxins, phosgene and polychlorinated biphenyls and fluidised-bed reactor for carrying it out
DE3833676A1 (en) * 1988-10-04 1990-04-05 Petri Juergen Dipl Ing Dr Process for the final storage of bound waste materials
DE3909060A1 (en) * 1989-03-18 1990-09-20 Pahl Ekke Dipl Ing Process for the making inert (inerting) of combustion residues and also natural and industrial sediments
DE4105562A1 (en) * 1991-02-22 1992-08-27 Hoelter Heinz Conversion of toxic halogenated organic cpds. from incinerator filter dust - comprises adding glycol to alkaline e.g. filter dust or absorption material and adding water-glass to agglomerate
EP0684087A4 (en) * 1993-11-15 1996-02-28 Kanegafuchi Chemical Ind WASTE DISPOSAL METHOD.

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