Methods for Defining the Binary Coal Mixture Composition in the Pulverized Coal-Fired Boiler

2017;
: pp. 1 – 8
https://doi.org/10.23939/jeecs2017.01.001
Received: February 14, 2017
Revised: March 16, 2017
Accepted: March 22, 2017
1
Lviv Polytechnic National University
2
Lviv Polytechnic National University
3
Lviv Polytechnic National University

The paper deals with the methods for defining the composition of the coal mixture burnt in boilers at combined heat and power plants. Indirect methods for defining the proportions of the two grades of coal in the mixture based on the available information on the quality characteristics of the coal are proposed. According to the first method the coal mixture composition is determined based on the values of volatile substances content in the combustible mass of the coal mixture and of each grade of coal making up the mixture. The second method uses the lower combustion heat of the coal mixture and lower combustion heats of the two grades of coal that the mixture consists of. The uncertainties of the results obtained by the developed methods are evaluated.

  1. Kapustianskyi, А. Study of the flame combustion of the non-baking coal and ash mixture. Scientific Bulletin of Ukrainian National Forestry University, No. 26.5, 2016, pp. 250 – 255. (in Ukrainian)
  2. Trembovlia, V., Fingel, E., Avdeieva, А. (1991) Heat performance testing of steam generating units. 2nd Edition, Energoatomizdat Publishers, Moscow. (in Russian)
  3. Herasymenko, I., Herasymenko, A., Herasymenko, V. (1986) Reference manual on commissioning, maintenance and operation of steam generating units. Tekhnika Publishers, Kyiv. (in Russian)
  4. Hard coal, anthracite and coke. Mechanical sampling. Part 2. Coal. Sampling from moving streams. DSTU ISO 13909-2:2005 (ISO 13909-2:2001, IDT), 2005. (in Ukrainian)
  5. Hard coal, anthracite and coke. Mechanical sampling. Part 3. Coal. Sampling from immobile lots. DSTU ISO 13909-3:2005 (ISO 13909-3:2001, IDT), 2005. (in Ukrainian)
  6. Hard coal, anthracite and coke. Mechanical sampling. Part 4. Coal. Sample preparation for testing. DSTU ISO 13909-4:2005 (ISO 13909-4:2001, IDT), 2005. (in Ukrainian)
  7. Hard coal, anthracite and coke. Mechanical sampling. Part 7. Methods for estimating the precision of sampling, sample preparation and testing. DSTU ISO 13909-7:2006 (ISO 13909-7:2001, IDT), 2006. (in Ukrainian)
  8. Omelianovskyi, P., Holyshev, L., Mysak, Yo., Mysak, I. (2010) Method for defining the composition of the binary coal mixture of the pulverized coal-fired boiler. UA Patent No. 90343, Bul. No 8, F 23 K 1/00, G 01 N 25/00. (in Ukrainian)
  9. Mysak, S. (2014) Method for defining the composition of the binary coal mixture of the pulverized coal-fired boiler. UA Patent No. 104223, Bul. No 1, F 23K 1/00, G 01N 33/22 (2006.01), G 01 N 25/00. (in Ukrainian)
  10. Dorozhovets, M. (2007) Processing of measuring results. Tutorial, Lviv Polytechnic National University Publishing House, Lviv. (in Ukrainian)
Y. Pistun, S. Mysak, H. Matiko. Methods for Defining the Binary Coal Mixture Composition in the Pulverized Coal-Fired Boiler. Energy Eng. Control Syst., 2017, Vol. 3, No. 1, pp. 1 – 8. https://doi.org/10.23939/jeecs2017.01.001