Evaluation of potential improvements to coking process energy efficiency as a consequence of Implementing a coal blend pre-drying operation [Analiza możliwości poprawy efektywności energetycznej procesu koksowania przez wdrożenie operacji podsuszania wsadu]
Zarczynski P.,ArcelorMittal |
Strugala A.,AGH University of Science and Technology |
Sobolewski A.,Instytut Chemicznej Przerobki Wegla w Zabrzu |
Gospodarka Surowcami Mineralnymi / Mineral Resources Management | Year: 2013
The policy of sustainable development, increasing societal awareness, and as result the ambitious targets of European Union energy policy are both forcing and inspiring companies to improve the energy efficiency of applied technologies. The coke making industry in Poland and Europe as a whole have been doing so by looking for optimal technological development leading to improved energy efficiency, and as consequence to higher profitability. Poland's domestic coke making industry is also searching for a technology which will allow for even more intensive exploitation of domestic coals, thus making it possible to benefit from geographical rent. One of the more interesting development opportunities for Polish coke plants, meeting all the existing demands, is the implementation of the coal blend pre-drying operation. Associating this technology with a coke dry quenching installation significantly improves the effectiveness of the coke making process. The unit consumption of coke oven gas could be decreased by as much as 12.6%. This article provides an analysis of improvements to energy efficiency in the coke making process after the implementation of a pre-drying operation - both independently and in conjunction with a dry quenching installation. In the first case, it is possible to decrease coke making heat consumption by 2.8%, while combining these two technologies, apart from other positive effects, leads to higher savings of up to 12.6%. Total coking heat of approximately 2,600 MJ/t wet coal blend needed to perform the coking of a coal blend decreases to about 2,527.5 MJ/t wet coal blend in the case when only the pre-drying operation is being applied. Applying this installation in conjunction with dry quenching technology will allow for a decrease in integral coking heat to 2,273.6 MJ/t wet coal blend. Combining both technologies seems to have significant potential, especially from the point of view of energy consumption. It allows for the use of hot coke physical enthalpy with a very high level of efficiency. The final part of the article presents a comparison of coke making process energy parameters for different technological systems with coal blend pre-drying and/or dry coke quenching.
Liquid biomass of woody and agro origin as a substitute for petroleum-derived start-up fuels [Zastosowanie biomasy ciekłej pochodzenia leśnego i rolniczego do substytucji paliw rozpałkowyoh pochodzenia naftowego]
ZuwaLa J.,Instytut Chemicznej Przerobki Wegla w Zabrzu |
Matuszek K.,Instytut Chemicznej Przerobki Wegla w Zabrzu
Przemysl Chemiczny | Year: 2010
Glycerol fraction and tall oil by-product were added to the light and heavy fuel oils to study the compn. of flue gases from their combustion. The presence of 16 polycyclic arom. hydrocarbons (including benzo[a]pyrene), volatile org. compd. and particulate matter was evidenced. Use of liq. biomass as a start-up fuel component was found, however, allowable.
Jagustyn B.,Instytut Chemicznej Przerobki Wegla w Zabrzu |
Wasielewski R.,Instytut Chemicznej Przerobki Wegla w Zabrzu |
Skawinska A.,Instytut Chemicznej Przerobki Wegla w Zabrzu
Ochrona Srodowiska | Year: 2014
The paper discusses issues related to the classification of energy from waste based on legal regulations and the research results. Analysis of fuel properties and biomass content in several types of biodegradable waste (municipal and industrial sewage sludge, paper, textiles, alternative fuels produced from municipal waste) was performed. Then, the content of biodegradable waste fractions was compared. These results, obtained using selective dissolution and 14C dating methods, showed that a large amount of biogenic waste lias the energy value. This would enable efficient energy recovery in the processes of combustion or co-combustion with fossil fuels. However, only this part of energy produced from such waste that comes from its biogenic fraction can be classified as energy from renewable sources. Therefore, clear and accurate rules are required for this fraction content determination in waste. Moreover, biodegradable fraction size estimation leads to the conclusion that some by-products generally considered as biodegradable do not constitute pure biomass. Therefore they should be handled appropriately during thermal treatment.