Time filter

Source Type

Sobolewski A.,Instytut Chemicznej Przerobki Wegla | Bartela L.,Instytucie Maszyn i Urzadzen Energetycznych | Skorek-Osikowska A.,Instytucie Maszyn i Urzadzen Energetycznych | Iluk T.,Instytutu Chemicznej Przerobki Wegla w Zabrzu
Rynek Energii | Year: 2012

This paper presents the results of an economic analysis of the combined heat and power plants, based on a biomass gasification process. The analysis is based on the results of the research conducted at the Institute for Chemical Processing of Coal in Zabrze on the innovative gasifier GazEla. The results of the research demonstrate the possibility of the effective production of gas with the quality enabling for its use in a piston engine or even in a gas turbine. The purpose of the analysis, the results of which are presented in this paper, was to compare the systems that integrate the process gas production based on the use of the generator GazEla with a piston engine and a gas turbine. A comparison of the two systems was based on the obtained values of NPV indicator. In addition, the impact of changes in the economic environment by changing a break-even price of electricity, heat and prices of certificate given for electricity produced from biomass and so-called high-efficiency cogeneration system was analyzed. Source

This article characterizes changes in the phosphorus content in 29 coal seams of the Pniówek and Zofiówka deposits within the Zofiówka Monocline. This was accomplished on the basis of a digital database containing 2, 730 samples, where phosphorus content was determined in 1, 674 samples. Basic statistical analysis was done to determine the number of samples for each coal seam (in which phosphorus content was determined), as well as min., max., and mean content of this element in the analyzed coal seams. The content of phosphorus was observed in the horizontal (in two directions: E-W and N-S) and vertical (with depth) direction. Contour maps of phosphorus content in all analyzed coal seams were also prepared. The results showed that the phosphorus content in the analyzed coal seams of the Zofiówka Monocline varies widely from 0.001 to 0.550% Pa (mean 0.064%). Therefore, the local coal contains a relatively high content of phosphorus unfavorable for the production of coke. The lowest content of this parameter is shown by coal seams No. 417/1, 418/1-2, 502/1, and 505/1; the highest coal content is found in seams No. 362/1 and 406/1. A general trend of changes in phosphorus content did not appear. Each of the coal seams exhibited differing characteristic changes. There was also no relation to the stratigraphy. Source

This document outlines the characteristics of variability in the total sulphur content of 29 bituminous coal seams from the Pniówek and Zofiówka deposits. These deposits occur in the Zofiówka Monocline - a primary resource base for Polish coking coals. The coal seams chosen for study include the Saddle, Ruda, Załe{ogonek}że, and Orzesze beds ranging from Namurian B to Wetphalian A. Characterizing the variability in total sulphur content was accomplished on the basis of 2,730 samples, where the content of St d was determined in 1,674 of the samples. Elementary statistical analysis was conducted. The number of samples, minimum, maximum, and mean value of St d were determined in every analyzed coal seam. The variability of total sulphur content was observed in vertical (with depth) and horizontal (in E-W and N-S) directions. Contour maps of total sulphur content for all studied coal seams were also generated. Results have shown that total sulphur content in the analyzed coal seams from the Zofiówka Monocline varies from 0.21% St d in coal seam No 406/1 to 2.18% St d in coal seam No 361. The average content of total sulphur in the deposits of the Zofiówka Monocline is 0.65% St d. No general tendency of variability in the total sulfur content was indicated. In each of the studied coal seams, a different character of variability in total sulphur content was observed. The results were obtained within the framework of the research project "Smart coke plant fulfilling requirements of the best available technology", implemented since 2008 and financed by the funds of POIG (Innovative Economy Operational Program). Source

Marcisz M.,Instytut Chemicznej Przerobki Wegla
Gospodarka Surowcami Mineralnymi / Mineral Resources Management | Year: 2010

Present state of coking coal resources recognition in the some deposits of Jastrȩbie Coal Company was presented. Analysis is based on the data from surveying-geological sections of coal mines in relation to parts of deposits, which will be extracted in the future. Coal seams in relation to present and future extraction, extraction time, resources, state of recognition and collected coal samples were analyzed. Recognition of coal quality in perspective to parts of deposits takes into considerations data of determined quality parameters (based on laboratory analysis of collected samples from seams and drill-holes) and their quantitative variability (number of determinations, minimal, maximal and mean values). State interdependences between parameters and general characteristics of their vertical variability were showed as well. Source

Marcisz M.,Wroclaw University of Technology | Sobolewski A.,Instytut Chemicznej Przerobki Wegla
Gospodarka Surowcami Mineralnymi / Mineral Resources Management | Year: 2015

Chlorine content variability analysis has been performed for 11 coal seams of the “Pniówek” deposit. The analysis has been performed based upon a digital database including 1136 samples, among which, for 472 samples the content of this parameter was determined. Basic statistical analyses were performed, which led to the determination of the number of samples from individual seams, in which the chlorine content was specified as well as the identification of the maximal and mean content of the parameter in a given seam. The horizontal (E-W and N-S directions) and vertical (with depth) variation of the chlorine content was determined. Also isoline maps of chlorine content in all examined seams were plotted. The results have shown that the chlorine content in the examined seams of the “Pniówek” deposit varies in a wide range from 0.025 to 0.584% Cla (mean of 0.134%). The extreme values (the highest and the lowest) of this parameter have been found in the 401/1 seam, which is characterized by a mean part of Cla amounting to 0.125%. No general tendency of chlorine content variation has been found. Each of the seams presents different characteristics of these variations. As it seems, it may nevertheless be observed that the chlorine content increases in the eastern and north-eastern direction. © Instytut Gospodarki Surowcami Mineralnymi i Energia Polskiej Akademii Nauk 2013. Source

Discover hidden collaborations