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Reed canary grass tried as a fuel in commercial district heating plants in Denmark; Provfoerbraenning av energigraeset roerflen vid tvaa kommersiella halmeldade anlaeggningar i Danmark

Technical Report:

Abstract

In two different types of district heating combustion plants in Denmark, normally using straw as fuel, the energy grass Reed canary grass (summer harvested) has been tested as a new fuel. The combustion plant in Ringsted burns the fuel as whole bales with the so called `cigar method`. In Nykoebing the fuel is burned on a rust as unpacked bales using a straw divider to divide the bales. The heating effect of the combustion plants is 4.5 MW and 4.0 MW, respectively. For both plants, there was no handling or technical problem observed in the test with Reed canary grass compared to straw. The analysis of the emission to air shows high average values for CO- and NO{sub x} during the test period which is unacceptable according to Swedish limit values for emissions. For combustion plants with a heating effect over 10 MW, the limit values for NO{sub x} is 100-200 mg/MJ. For smaller plants there are no limits values today but in the future demands for limitation of NO{sub x} emission may come. For both plants, the O{sub 2}-content in fumes varied a lot, with a high mean value, about 10%. The content of chlorine in straw and energy  More>>
Authors:
Burvall, J [1] 
  1. Sveriges Lantbruksuniversitet, Enheten foer Biomassa, Biobraenslen och Fibergroedor, Umeaa (Sweden)
Publication Date:
Mar 01, 1992
Product Type:
Technical Report
Report Number:
SVF-440
Reference Number:
SCA: 092000; PA: SWD-92:007290; SN: 93000918375
Resource Relation:
Other Information: PBD: Mar 1992
Subject:
09 BIOMASS FUELS; GRAMINEAE; COMBUSTION; ASHES; CHEMICAL ANALYSIS; STRAW; BIOMASS; EMISSION; AIR POLLUTION; POWER RANGE 01-10 MW; FLUE GAS; FIELD TESTS; EXPERIMENTAL DATA; AGRICULTURE; NITROGEN OXIDES; CARBON MONOXIDE; 092000
OSTI ID:
10113716
Research Organizations:
Stiftelsen foer Vaermeteknisk Forskning, Stockholm (Sweden)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
Other: ON: DE93753064; TRN: SE9207290
Availability:
OSTI; NTIS
Submitting Site:
SWD
Size:
67 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Burvall, J. Reed canary grass tried as a fuel in commercial district heating plants in Denmark; Provfoerbraenning av energigraeset roerflen vid tvaa kommersiella halmeldade anlaeggningar i Danmark. Sweden: N. p., 1992. Web.
Burvall, J. Reed canary grass tried as a fuel in commercial district heating plants in Denmark; Provfoerbraenning av energigraeset roerflen vid tvaa kommersiella halmeldade anlaeggningar i Danmark. Sweden.
Burvall, J. 1992. "Reed canary grass tried as a fuel in commercial district heating plants in Denmark; Provfoerbraenning av energigraeset roerflen vid tvaa kommersiella halmeldade anlaeggningar i Danmark." Sweden.
@misc{etde_10113716,
title = {Reed canary grass tried as a fuel in commercial district heating plants in Denmark; Provfoerbraenning av energigraeset roerflen vid tvaa kommersiella halmeldade anlaeggningar i Danmark}
author = {Burvall, J}
abstractNote = {In two different types of district heating combustion plants in Denmark, normally using straw as fuel, the energy grass Reed canary grass (summer harvested) has been tested as a new fuel. The combustion plant in Ringsted burns the fuel as whole bales with the so called `cigar method`. In Nykoebing the fuel is burned on a rust as unpacked bales using a straw divider to divide the bales. The heating effect of the combustion plants is 4.5 MW and 4.0 MW, respectively. For both plants, there was no handling or technical problem observed in the test with Reed canary grass compared to straw. The analysis of the emission to air shows high average values for CO- and NO{sub x} during the test period which is unacceptable according to Swedish limit values for emissions. For combustion plants with a heating effect over 10 MW, the limit values for NO{sub x} is 100-200 mg/MJ. For smaller plants there are no limits values today but in the future demands for limitation of NO{sub x} emission may come. For both plants, the O{sub 2}-content in fumes varied a lot, with a high mean value, about 10%. The content of chlorine in straw and energy grass can reach high levels. Most of the chlorine binds up in the ash (KCl), and therefore the emission of HCl are low. The emission to air of SO{sub x}, which is 100 mg/MJ, is below the limit value for smaller plants. The variation of moisture and the low density are the properties of grass and straw that mainly causes problems in the combustion and gives high emission levels. Today it seems to be necessary to press the material into fuel briquetts or fuel pellets to get a better combustion, that can meet environmental demands. (7 figs., 17 tabs.).}
place = {Sweden}
year = {1992}
month = {Mar}
}