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DE3322539A1 - Process for non-polluting disposal of residual products from coal-fired power stations - Google Patents

Process for non-polluting disposal of residual products from coal-fired power stations

Info

Publication number
DE3322539A1
DE3322539A1 DE19833322539 DE3322539A DE3322539A1 DE 3322539 A1 DE3322539 A1 DE 3322539A1 DE 19833322539 DE19833322539 DE 19833322539 DE 3322539 A DE3322539 A DE 3322539A DE 3322539 A1 DE3322539 A1 DE 3322539A1
Authority
DE
Germany
Prior art keywords
coal
fired power
caso4
power stations
ash
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
DE19833322539
Other languages
German (de)
Other versions
DE3322539C2 (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 DE19833322539 priority Critical patent/DE3322539A1/en
Publication of DE3322539A1 publication Critical patent/DE3322539A1/en
Application granted granted Critical
Publication of DE3322539C2 publication Critical patent/DE3322539C2/de
Granted legal-status Critical Current

Links

Classifications

    • EFIXED CONSTRUCTIONS
    • E02HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02DFOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
    • E02D17/00Excavations; Bordering of excavations; Making embankments
    • E02D17/18Making embankments, e.g. dikes, dams

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  • Engineering & Computer Science (AREA)
  • Mining & Mineral Resources (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Paleontology (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Processing Of Solid Wastes (AREA)
  • Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)

Abstract

The residual products arising in the flue gas desulphurisation especially of coal-fired power stations are obtained in greater quantities than are used at the moment for cement production, construction of black road surfaces and similar fields of use. For disposal from power stations, it is therefore proposed to mix the ash, preferably in the still hot state, with the moist CaSO4 product and to move it to cavities which are to be backfilled by a tipping method or pneumatically, preferably dredged pits. The CaSO4 mixture can also be dried by waste heat from the power station and be used, mixed with ash, for other purposes.

Description

Beschreibung und Erläuterung zur PatentanmeldungDescription and explanation of the patent application

'Verfahren zum umweltfreundlichen Verbringen von Rückstandsprodukten aus Kohlenkraftwerken' Es ist bekannt, daß Kohlekraftwerke Asche, vorzugsweise Filterasche in Elektrofiltern und CaSO4 naß als Rückstandsprodukte durch die Rauchgasentschwefelung produzieren.'' Process for the environmentally friendly disposal of residue products from coal-fired power plants' It is known that coal-fired power plants produce ash, preferably filter ash in electrostatic precipitators and CaSO4 wet as residue products from flue gas desulphurisation to produce.

Filterasche wird zum großen Teil der Zementindustrie oder der Schwarzdeckenherstellung zugeführt.Filter ash is used to a large extent in the cement industry or in the manufacture of black roofs fed.

Das CaSO4-Gemisch wird feucht den Gipsfabriken zugeführt, um hier zu Betahaibhydrat gebrannt Mit dem Einsatz von Kohle im Kraftwerksbereich und dem Rückgang der Zementproduktion und dem Schwarzdeckenbau ist das Problem der Deponieruria der genannten Rückstände größer geworden, da keine Deponieflächen in ausreichendem HaBe vorhanden sind.The CaSO4 mixture is fed to the gypsum factories in a moist state burned to betahaibhydrate With the use of coal in the power plant area and the The problem of the landfilluria is the decline in cement production and the black ceiling construction of the residues mentioned have become larger, as there are no landfill areas in sufficient quantities Hats are present.

Andererseits werden durch die Kiesgewinnung große Baggerseen freigesetzt, die tunlichst wieder verfüllt werden müssen.On the other hand, large quarry ponds are released by the gravel extraction, which have to be refilled as far as possible.

Das Verfüllungsmaterial, z.B. für den Haum ordrhein-Westfalen, wo mindestens 100 Mio t Kies benötigt werden, steht nicht zur Verfügung; selbst beim totalen Einsatz von Wasch- und Brechbergen ist das Problem der Verfüllung und Wiederrackführung in Ackerland nicht mehr zu gewährleisten.The backfill material, e.g. for the Haum north Rhine-Westphalia, where at least 100 million tonnes of gravel are required is not available; even at The problem of backfilling and recracking is the total use of mountains of washes and breakouts can no longer be guaranteed in arable land.

Aus diesem Grunde wird erfindungsgemä'.ß vorgeschlagen, das Problem 'Entsorgung von Kohlekraftwerken' mit dem Problem des Verfüllens von Baggerseen wirtschaftlich zu kuppeln, indem die Asche aus den Kohlekraftwerken, vorzugsweise im heißen Zustand mit dem feuchten CaS04-Gemisch gemischt - und somit in eine trockene Masse übergeführt wird, die dann in Container übergeben und per Eisenbahn oder Schiff den Baggerseen verklappt oder pneumatisch zugeführt werden kann.For this reason it is proposed according to the invention to solve the problem 'Disposal of coal-fired power stations' with the problem of backfilling quarry ponds economically to couple by removing the ashes from the coal-fired power plants, preferably mixed with the moist CaS04 mixture when hot - and thus into a dry one Mass is transferred, which is then transferred in containers and used by rail or ship can be folded up or fed pneumatically to the quarry ponds.

Selbstverständlich ist der erfindungsgemäße Gedanke zur Durchführung des Verfahrens nicht auf einzelne Verfahrensschritte beschränkt, sondern es sind zahlreiche Abänderungen möglich, ohne j jedoch von dem Grundgedanken abzuweichen, das feuchte CaS04-Produkt mit der vorzugsweise heißen Asche aus den Kraftwerkskesseln - vorzugsweise Elektrofilterasche - zu mischen und in Klapp- oder Fluidfördersystem-Cor;tainer einzufüllen, so daß das Rückstandsprodukt klapptechnisch oder blasfördertechnisch umweltfreundlich zum Verfüllen der Hohlräume genutzt werden kann.It goes without saying that the idea according to the invention is to be implemented of the process are not limited to individual process steps, they are numerous changes are possible without, however, deviating from the basic idea, the moist CaS04 product with the preferably hot ash from the power plant boilers - preferably electrostatic precipitator ash - to be mixed and placed in a folding or fluid conveying system cor; tainer to be filled in, so that the residue product is folded or blown conveyor can be used in an environmentally friendly way to fill the cavities.

Weiter ist es erfindungsgemäß von Vorteil, daß mit der Abwärme vorzugsweise der Kraftwerksabgase und/oder entnommener Wärme aus dem Kraftwerksprozeß das feuchte CaSO4-Gemisch wunschgerecht weiter getrocknet oder sogar bis zum Halbhdrat verarbeitet, mit der Asche gemischt, zum Verfüllen Anwendung findet, wobei hier ebenfalls bei dem Grundgedanken gewährleistet ist, daß die flugfähige Asche aus den l.lektrofiltern bei er windigem Wetter nicht aus dem Bereich der Baggerlöcher die Umwelt beeinträchtigt, sondern durch die Bindefähigkeit des gleichzeitig anfallenden Abfallproduktes CaS04 flugunfähig, jedoch deponiefähig Verwendung findet.It is also advantageous according to the invention that the waste heat is preferably used the power plant exhaust gases and / or extracted heat from the power plant process the moist CaSO4 mixture further dried as required or even processed up to half-hydrated, mixed with the ashes, is used for backfilling, and is also used here the basic idea is that the airworthy ash from the l.lektrofiltern in windy weather does not affect the environment from the area of the dredging holes, but rather through the binding capacity of the waste product CaS04 that occurs at the same time unable to fly, but capable of being used as a depository.

Patentansprüche: Patent claims:

Claims (1)

Patetansprüche: Anspruch I: Verfahren zur Entsorgung von Kohlekraftwerken und zum gleichzeitigen Verfüllen von Hohlräumen, vorzugsweise Baggerlöchern, dadurch gekennzeichnet, daß die Asche aus Kohlekraftwerken, vorzugsweise in heißem Zustand mit dem feuchten CaSO4-Produkt gemischt, als Wuasi-Trockenmasse Containern übergeben wird, die klapptechnisch oder pneumatisch förderwillig zum Verfüllten von Hohlräumen, vorzugsweise Baggerlöchern, dient.Patent Claims: Claim I: Process for the disposal of coal-fired power plants and for the simultaneous filling of cavities, preferably dredging holes, thereby characterized in that the ashes from coal-fired power plants, preferably in a hot state mixed with the moist CaSO4 product, transferred to containers as Wuasi dry matter which is foldable or pneumatically willing to fill cavities, preferably dredging holes. Anspruch II: Verfahren nach anspruch I dadurch gekennzeichnet, daß das feuchte CaSO4-Gemisch mit Abwärme aus dem Kraftwerk getrocknet und weiterbehandelt zu z.B. Betahalbhydrat, mit der Asche gemischt, Anwendung findet.Claim II: The method according to claim I, characterized in that the moist CaSO4 mixture is dried with waste heat from the power plant and further treated to e.g. beta hemihydrate mixed with the ash, is used.
DE19833322539 1983-06-23 1983-06-23 Process for non-polluting disposal of residual products from coal-fired power stations Granted DE3322539A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19833322539 DE3322539A1 (en) 1983-06-23 1983-06-23 Process for non-polluting disposal of residual products from coal-fired power stations

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19833322539 DE3322539A1 (en) 1983-06-23 1983-06-23 Process for non-polluting disposal of residual products from coal-fired power stations

Publications (2)

Publication Number Publication Date
DE3322539A1 true DE3322539A1 (en) 1985-01-17
DE3322539C2 DE3322539C2 (en) 1989-10-19

Family

ID=6202130

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19833322539 Granted DE3322539A1 (en) 1983-06-23 1983-06-23 Process for non-polluting disposal of residual products from coal-fired power stations

Country Status (1)

Country Link
DE (1) DE3322539A1 (en)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803764A1 (en) * 1978-01-28 1979-08-16 Saarbergwerke Ag Utilising fly ash and calcium sulphate obtd. from flue gas - of coal burning furnace desulphurisation units, by heating aq. suspension to form anhydrite, and casting into bricks, etc.
DE2925882B1 (en) * 1979-06-27 1980-08-21 Guenther Dr Heide Method and device for the harmless disposal of ash containing sulphate
DE2906230A1 (en) * 1979-02-17 1980-08-28 Steag Ag Disposal of residue obtd. from waste gas washing plants - where residue is calcined to form beta calcium sulphate hemi:hydrate employed to reinforce tunnels in underground mines
DE3113714A1 (en) * 1981-03-14 1982-11-25 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Dam-building materials for underground mining
DE3126200A1 (en) * 1981-07-03 1983-01-20 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for removing residual products from waste incineration systems

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2803764A1 (en) * 1978-01-28 1979-08-16 Saarbergwerke Ag Utilising fly ash and calcium sulphate obtd. from flue gas - of coal burning furnace desulphurisation units, by heating aq. suspension to form anhydrite, and casting into bricks, etc.
DE2906230A1 (en) * 1979-02-17 1980-08-28 Steag Ag Disposal of residue obtd. from waste gas washing plants - where residue is calcined to form beta calcium sulphate hemi:hydrate employed to reinforce tunnels in underground mines
DE2925882B1 (en) * 1979-06-27 1980-08-21 Guenther Dr Heide Method and device for the harmless disposal of ash containing sulphate
DE3113714A1 (en) * 1981-03-14 1982-11-25 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Dam-building materials for underground mining
DE3126200A1 (en) * 1981-07-03 1983-01-20 Hölter, Heinz, Dipl.-Ing., 4390 Gladbeck Process for removing residual products from waste incineration systems

Also Published As

Publication number Publication date
DE3322539C2 (en) 1989-10-19

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OR8 Request for search as to paragraph 43 lit. 1 sentence 1 patent law
8105 Search report available
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D2 Grant after examination
8363 Opposition against the patent
8339 Ceased/non-payment of the annual fee