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Rozporządzenie Ministra Środowiska DU. 2018 poz. 680 z dnia 1 marca 2018 r. wprowadziło obostrzenia emisyjne dla średnich obiektów spalania energetycznego. W wyniku wdrożonego dokumentu istniejące średnie obiekty ciepłownicze (MCP) zostaną objęte od 01.01.2025 r. nowymi limitami. Osiągnięcie podanych w ustawie limitów jest uwarunkowane zastosowaniem metod wtórnych redukcji NOx. Powszechnie stosowane...
The paper presents the results of physical and numerical tests of fluid flow through the filling of a rotary air heater (RAH). A laboratory-scale test bench was used to measure flow resistance across a fragment of a RAH. Seven types of RAH modules were tested-one steel and six ceramic (as catalyst carriers). The relationship between pressure drop and velocity (Renumber) of flow was used to deduce...
A method for choosing the optimum fineness of coal in pulverised-fuel boilers is presented. This method is based on economic criteria and takes into account variations of the power unit load as well as the durability and the output of pulverisers. Calculations are performed for short periods of time (e.g. 1 h), provided that it is possible to change the fineness of the coal by controlling the angle...
This paper presents the results of techno-economical analysis of a proposal of the utilization of TFT (triple-finned tubes) in a boiler's tube banks. The following three tube bank arrangements were compared: (A) the base – staggered plain tube bank; (B) the combination of triple-finned and plain tubes – two rows of triple-finned tubes every 10 rows; (C) the alternating tube bank, where half of the...
The paper presents slagging and fouling properties of ashes when hard coal was fired in a pulverized coal-fired boiler (230 t/h capacity) and the change of fouling indices of resulting fly ash when halloysite fireside additive was used. During reported full-scale study the pulverized coal-fired boiler was fired with hard coal with the addition of pulverized halloysite injected directly into furnace...
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