Description: Es ist nachgewiesen, dass ein auf Basis Steinkohle entwickelter Aktivkoks als Adsorber/Katalysator erfolgreich zur kombinierten Entschwefelung und Entstickung von Rauchgasen eingesetzt werden kann. Nachteil des Verfahrens sind jedoch die hohen Kosten des aus Steinkohle hergestellten Aktivkokses, die dazu fuehren, dass man den beladenen Koks mit hohem technischem Aufwand regenerieren muss, um ihn mehrfach einsetzen zu koennen. Dadurch werden die Marktchancen erheblich eingeengt. Der besondere Anreiz, die Eignung des Braunkohlenkokses fuer diesen Einsatzzweck eingehend zu untersuchen, liegt darin, dass handelsueblicher Braunkohlenkoks wesentlich preiswerter ist als Aktivkoks auf Basis Steinkohle. Ziel des Forschungsvorhabens ist es, die bisher aus Vorversuchen vorliegenden Erkenntnisse ueber den Einsatz von Braunkohlen-Hochtemperatur-Koks (Braunkohlenkoks) zur Entschwefelung und Entstickung von Rauchgasen durch Laborversuche an techniknahen Modellgasen abzusichern und zu erweitern. Damit sollen belastbare Daten zur Auslegung halbtechnischer oder technischer Anlagen zur Rauchgasreinigung mit Braunkohlenkoks erlangt und Anhaltswerte fuer die Wirtschaftlichkeit des Verfahrens erzielt werden.
Types:
SupportProgram
Origins:
/Bund/UBA/UFORDAT
Tags:
Aktivkohle
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Aktivkoks
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Braunkohle
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Koks
?
Rauchgas
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Steinkohle
?
Rauchgasentschwefelung
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Rauchgasreinigung
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Abgasreinigung
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Emissionsminderung
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Entstickung
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Kostensenkung
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Laborversuch
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Forschungsprojekt
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Region:
Nordrhein-Westfalen
Bounding boxes:
6.76339° .. 6.76339° x 51.21895° .. 51.21895°
License: cc-by-nc-nd/4.0
Language: Deutsch
Organisations
Time ranges:
1986-09-01 - 1989-02-28
Alternatives
-
Language: Englisch/English
Title: Development of a process to separate sulfur and nitric oxides from flue gases (using brown coal coke)
Description: Objective: The aim of the research project is to consolidate and extend by means of comprehensive laboratory tests the data so far available on the use of high-temperature brown-coal coke (lignite coke) for the removal of sulphur and nitrogen oxides from flue gases. In this way, it is indented to obtain reliable data for the design of half- or full-size flue-gas cleaning plants and to determine the economics of their operation. General information: preliminary tests in the laboratory and on scale models have shown that standard lignite coke has similar desulphurization properties to hard-coal activated coke and also possesses catalytic properties for the removal of nitrogen oxides. The particular attraction for conducting a detailed study of the suitability of lignite coke is that standard lignite coke is substantially cheaper than activated coke obtained from hard coal. If the studies produce a positive result, a much less expensive adsorber-catalyst material will be available for flue-gas cleaning which would also offer substantial technical advantages, since it would obviate the need for regeneration of deactivated coke. Economic feasibility studies can then be used to determine potential applications for the material. There will also be the opportunity of developing simple disposal techniques adapted to the lower-price coke. A potential application would be as a high-energy material in the cement industry and in sulphur or sulphuric-acid manufacture; desorption of the sulphuric acid would also be possible, in order to use the desulphurized coke as a fuel in furnaces or for recycling. Achievements: Our research programme has shown that brown coal coke is an efficient adsorber suitable for flue gas desulphurisation, in particular for removing small sulphur dioxide portions. The investigations in the field of nitric oxide reduction have demonstrated that it is feasible to attain nitric oxide conversion rates of up to 84 per cent on the basis of brown coal coke. This rate can even be slightly increased by the use of partly demineralised coke.
https://ufordat.uba.de/UFORDAT/pages/PublicRedirect.aspx?TYP=PR&DSNR=27434
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