Description: Das Projekt "Polymeric meat exchangers for heat recovery of sour coal refuse combustion gases and hot water utilization at 80-120 deg. C" wird vom Umweltbundesamt gefördert und von GEA Luftkühlergesellschaft Happel, Hauptabteilung Forschung und Entwicklung durchgeführt. Objective: - Recovery of waste energy, presently destroyed in a FGD or in the atmosphere, shall be demonstrated with the use of modern heat exchangers. - With the selected combination of cost-optimized polymeric materials, the region of widely encountered heat exchanger wall temperatures of less than abt. 150 deg. C shall be utilized economically to produce hot water up to abt. 120 deg. C and to allow heating of gas using zero-leckage recuperative systems. - Acid condensation on the heat exchangers shall be provoked (low pollution) and withstood over a long service life. Disadvantages of the materials PFA and PTFE shall be avoided. Service life is compared with different materials by applications made in parallel and purposely performed secondary tests. General Information: - Suitability of novel polymeric material combinations compared with single-wall polymeric materials will be demonstrated. - Waste hot flue gases from coal fired stations/refuse incinerators are cooled down to a region where acids would condense for the purpose of energy recovery and reduction of environmental pollution. The recovered energy is introduced operationally safe into a cleaned gas flow. - In a Munich power station the flue gas that was cleaned to a low SO2/m3 level before is heated up with flue gas energy without the use of operation steam and without transferring acid-containing ashes. - Individual operation parameters of the heat exchangers and of each cycle can be seen from Flow Sheet 33 99 0528 01 Rev.1. For the purposely performed secondary tests two recuperative heat exchangers of an adjacent plant operating purely as refuse incinerator are used. - The flow sheet 'GEA DAGAVO for FGD', is an example for a conventional clean gas heating system with steam at 10 bar. - In order to achieve a global market introduction of energy saving heat exchanger systems with tubes made of polymeric materials, the following properties of the various tube materials shall be successfully demonstrated. 1. FLUE GAS - Price/performance ratio/service life of, for instance, a PVDF/FEP tube wall = 150 C wall temperature was to be inferior to that of solid-wall PTFE tubes. While both the tested combinations/the pure PTFE tubes do not exhibit a sufficiently safe operation, the PFA tube with advanced QA parameters are complying with the requirements. - The problems of frequent failures on PTFE tubes shall be reduced towards zero by applying novel fabrication, quality assurance procedures of the compound material tubes. Characteristic data for e.g. 160 C PFA/PTFE tube wall temperature should be superior to the solid-wall PFA tubes exposed to similar stress. However, it emerged that optimized PFA tubes used in this programme performed best. Inappropriate behaviour of unsuitable PFA tubes was demonstrated. And by way of the improved QA programme used, this malfunction could be detected at a very early stage before the tubes were actually installed in the heat exchangers. This required...
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Origin: /Bund/UBA/UFORDAT
Tags: München ? Verbundwerkstoff ? Strömungsenergie ? Seen ? Polytetrafluorethylen ? Abfallverbrennung ? Abfallverwertung ? Abwärmenutzung ? Asche ? Heizenergie ? Polymer ? Rauchgas ? Wärmerückgewinnung ? Wasserdampf ? Abfallreduzierung ? Abfallverbrennungsanlage ? Energierückgewinnung ? Kohle ? Korrosionsbeständigkeit ? Materialprüfung ? Schwefeldioxid ? Stress ? U-Bahn ? Verbrennungsgas ? Wärmeübertrager ? Wärme ? Warmwasser ? Warmwasserbereitung ? Qualitätsmanagement ? Gasförmiger Stoff ? Perfluorierte Kohlenwasserstoffe ? Kraftwerk ? Energie ? Energieeinsparung ? Umweltverschmutzung ? Abfall ? Energiespeicher ? Vergleichsanalyse ? Kondensation ? Wassernutzung ? Werkstoffkunde ? Säure ? Forschung und Entwicklung ? Energietransport ? Gasheizung ? Feuerung ? Gasreinigung ? Heizung ? Rohrleitung ? Schadstoffminderung ? Atmosphäre ? PFA ? Perfluoralkoxy ? QA-Parameter ? Temperaturabsenkung ? Eignungsfeststellung ? Temperaturerhöhung ? Wärmetransport ? renewable sources of energy ?
Region: Nordrhein-Westfalen
Bounding boxes: 6.76339° .. 6.76339° x 51.21895° .. 51.21895°
License: cc-by-nc-nd/4.0
Language: Deutsch
Time ranges: 1989-11-03 - 1993-08-31
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