EPRI-USDOE COOPERATIVE AGREEMENT: COFIRING BIOMASS WITH COAL Page: 44 of 194
This report is part of the collection entitled: Office of Scientific & Technical Information Technical Reports and was provided to UNT Digital Library by the UNT Libraries Government Documents Department.
Extracted Text
The following text was automatically extracted from the image on this page using optical character recognition software:
" Cofiring can be accomplished in a manner that does not negatively impact the
operability or operations of a given power plant, provided that the most appropriate
cofiring technology is applied
" Cofiring virtually always reduces the power plant boiler efficiency, however the
reductions can be managed as an economic issue rather than as a technical barrier
" Cofiring can be used to reduce virtually all airborne emissions, and has a particularly
beneficial impact on NO, emissions.
With respect to the NO, emissions, the evidence of impacts is substantial. Figure S-20 depicts
the NO, emissions from all tests sponsored by the EPRI-USDOE Cooperative Agreement.
Note the line indicating where a 1 percent cofiring percentage (heat input basis) would equal a 1
percent NOx reduction. This line represents the substitution effect of a low nitrogen fuel. Note
that over 67 percent of all tests are well above that line. Figure S-20 shows considerable
spread in the data. This spread is caused by variations in firing technology, biomass fuel used,
percentage of biomass fuel used, base coal fired, and combustion conditions (e.g., load, excess
02). Despite this variability, however, the impact of cofiring on NOX emissions is highly
significant.
Average NO. Emissions Reduction
30-
25-
Line Indicates 1% NOx Reduction for Every 1% Cofiring Percentage (Btu Basis)
20
15
10 ff
5-
00
2
4
6
8
10
12
Percent Cofiring, Btu Basis
Figure S-20. NOX Reduction Caused by Cofiring-All Tests Sponsored by the EPRI-USDOE
Cooperative AgreementFinal EPRI Report.doc
44
10/31/01 9:18 PM
Upcoming Pages
Here’s what’s next.
Search Inside
This report can be searched. Note: Results may vary based on the legibility of text within the document.
Tools / Downloads
Get a copy of this page or view the extracted text.
Citing and Sharing
Basic information for referencing this web page. We also provide extended guidance on usage rights, references, copying or embedding.
Reference the current page of this Report.
Tillman, David A. EPRI-USDOE COOPERATIVE AGREEMENT: COFIRING BIOMASS WITH COAL, report, September 1, 2001; Pittsburgh, Pennsylvania. (https://digital.library.unt.edu/ark:/67531/metadc743296/m1/44/: accessed April 19, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.