Abstract
This project has been performed in order to evaluate the technical, financial and environmental consequences for a conversion from the use of pulverized coal (PC) to pulverized wood in an actual plant. During the test period we used about 300 tons of pulverized wood in Joenkoepings Energiverks steam boiler number 2, which has a nominal output of 90 tons steam/h (68 MW). The tests were performed at three different loads; 20, 35, and 50 t/h. The results presented in this report are primarily specific for the particular boiler on which the tests have been carried out. The fuel system was originally designed for the use of both PC and pulverized peat. Due to the low specific weight of pulverized wood the capacity was limited to 50%. During our test firing with pulverized wood we noticed that the load on the superheaters increased, i.e. the heat transmission was moved further back in the boiler. This was probably caused by the fact that we were forced to use more excess air. At all three load levels though, we had a stable and even flame. At the two higher loads the emission parameters averaged; NO{sub x} = 100 mg/MJ, CO = 50 ppm,
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Nordberg, G;
Alsparr, J;
Hoegberg, C
[1]
- VBB VIAK AB, Stockholm (Sweden). Div. Energi och Anlaeggningar
Citation Formats
Nordberg, G, Alsparr, J, and Hoegberg, C.
Conversion to pulverized wood in a pulverized coal fired power plant; Konvertering till traepulver i en kolpulvereldad anlaeggning.
Sweden: N. p.,
1992.
Web.
Nordberg, G, Alsparr, J, & Hoegberg, C.
Conversion to pulverized wood in a pulverized coal fired power plant; Konvertering till traepulver i en kolpulvereldad anlaeggning.
Sweden.
Nordberg, G, Alsparr, J, and Hoegberg, C.
1992.
"Conversion to pulverized wood in a pulverized coal fired power plant; Konvertering till traepulver i en kolpulvereldad anlaeggning."
Sweden.
@misc{etde_10120955,
title = {Conversion to pulverized wood in a pulverized coal fired power plant; Konvertering till traepulver i en kolpulvereldad anlaeggning}
author = {Nordberg, G, Alsparr, J, and Hoegberg, C}
abstractNote = {This project has been performed in order to evaluate the technical, financial and environmental consequences for a conversion from the use of pulverized coal (PC) to pulverized wood in an actual plant. During the test period we used about 300 tons of pulverized wood in Joenkoepings Energiverks steam boiler number 2, which has a nominal output of 90 tons steam/h (68 MW). The tests were performed at three different loads; 20, 35, and 50 t/h. The results presented in this report are primarily specific for the particular boiler on which the tests have been carried out. The fuel system was originally designed for the use of both PC and pulverized peat. Due to the low specific weight of pulverized wood the capacity was limited to 50%. During our test firing with pulverized wood we noticed that the load on the superheaters increased, i.e. the heat transmission was moved further back in the boiler. This was probably caused by the fact that we were forced to use more excess air. At all three load levels though, we had a stable and even flame. At the two higher loads the emission parameters averaged; NO{sub x} = 100 mg/MJ, CO = 50 ppm, SO{sub 2} = 0.6 mg/MJ and dust = 1 mg/MJ. The level of polychlorinated aromatic hydrocarbons PNA was lower than 151 ng/nm{sup 3} dry gas. The chloride content was lower than 0.55 mg HCL/nm{sup 3} dry gas. The emission of polychlorinated dibenzodioxins/dibenzofurans, expressed as TCDD-equivalents according to Eadon, was low at 2 pg/nm{sup 3} dry gas. The boiler efficiency at the two higher loads was around 91-92%, and around 87% at the lower load. These values are of the same magnitude as those when using PC. Financially the use of pulverized wood competes with PC and oil when considering pure heat production with present tax regulations.}
place = {Sweden}
year = {1992}
month = {Mar}
}
title = {Conversion to pulverized wood in a pulverized coal fired power plant; Konvertering till traepulver i en kolpulvereldad anlaeggning}
author = {Nordberg, G, Alsparr, J, and Hoegberg, C}
abstractNote = {This project has been performed in order to evaluate the technical, financial and environmental consequences for a conversion from the use of pulverized coal (PC) to pulverized wood in an actual plant. During the test period we used about 300 tons of pulverized wood in Joenkoepings Energiverks steam boiler number 2, which has a nominal output of 90 tons steam/h (68 MW). The tests were performed at three different loads; 20, 35, and 50 t/h. The results presented in this report are primarily specific for the particular boiler on which the tests have been carried out. The fuel system was originally designed for the use of both PC and pulverized peat. Due to the low specific weight of pulverized wood the capacity was limited to 50%. During our test firing with pulverized wood we noticed that the load on the superheaters increased, i.e. the heat transmission was moved further back in the boiler. This was probably caused by the fact that we were forced to use more excess air. At all three load levels though, we had a stable and even flame. At the two higher loads the emission parameters averaged; NO{sub x} = 100 mg/MJ, CO = 50 ppm, SO{sub 2} = 0.6 mg/MJ and dust = 1 mg/MJ. The level of polychlorinated aromatic hydrocarbons PNA was lower than 151 ng/nm{sup 3} dry gas. The chloride content was lower than 0.55 mg HCL/nm{sup 3} dry gas. The emission of polychlorinated dibenzodioxins/dibenzofurans, expressed as TCDD-equivalents according to Eadon, was low at 2 pg/nm{sup 3} dry gas. The boiler efficiency at the two higher loads was around 91-92%, and around 87% at the lower load. These values are of the same magnitude as those when using PC. Financially the use of pulverized wood competes with PC and oil when considering pure heat production with present tax regulations.}
place = {Sweden}
year = {1992}
month = {Mar}
}