24-10-2012, 03:37 PM
Advanced, Low/Zero Emission Boiler Design and Operation
ABSTRACT
This document reviews the work performed during the quarter July--September 2003. Significant progress has been made
in Task 1 (Site Preparation), Task 2 (Test performance) and Task 3 (Techno-Economic Study) of the project: the site
preparation has been completed, two weeks of tests have been performed and the power generating units to be compared from
an economical standpoint have been selected and accurately described. In the experimental part of this effort (task1), the
partners in this project demonstrated the feasibility of 100% air replacement with O(sub 2)-enriched flue gas on 1.5MW
coal-fired boiler. The air infiltration have been reduced to approximately 5% of the stoichiometry, enabling to reach around
70% of CO(sub 2) in the flue gases. Higher air in-leakage reduction is expected using alternative boiler operating procedure
in order to achieve higher CO(sub 2) concentration in flue gas for further sequestration or reuse. The NO(sub x) emissions
have been shown considerably lower in O(sub 2)-fired conditions than in air-baseline, the reduction rate averaging 70%. An
additional week of tests is scheduled mid October 2003 for combustion parameter optimization, and some more days of
operation will be dedicated to mercury emission measurement and heat transfer characterization. Out of the $485k already
allocated in this project, $300k has been spent and reported to date, mainly in site preparation ((approx)$215k) and test
performance ((approx)$85k). In addition to DOE allocated funds, to date approximately $240k has been cost-shared by the
participants, bringing the total project cost up to $540k as on September 30, 2003.
ABSTRACT
This document reviews the work performed during the quarter July--September 2003. Significant progress has been made
in Task 1 (Site Preparation), Task 2 (Test performance) and Task 3 (Techno-Economic Study) of the project: the site
preparation has been completed, two weeks of tests have been performed and the power generating units to be compared from
an economical standpoint have been selected and accurately described. In the experimental part of this effort (task1), the
partners in this project demonstrated the feasibility of 100% air replacement with O(sub 2)-enriched flue gas on 1.5MW
coal-fired boiler. The air infiltration have been reduced to approximately 5% of the stoichiometry, enabling to reach around
70% of CO(sub 2) in the flue gases. Higher air in-leakage reduction is expected using alternative boiler operating procedure
in order to achieve higher CO(sub 2) concentration in flue gas for further sequestration or reuse. The NO(sub x) emissions
have been shown considerably lower in O(sub 2)-fired conditions than in air-baseline, the reduction rate averaging 70%. An
additional week of tests is scheduled mid October 2003 for combustion parameter optimization, and some more days of
operation will be dedicated to mercury emission measurement and heat transfer characterization. Out of the $485k already
allocated in this project, $300k has been spent and reported to date, mainly in site preparation ((approx)$215k) and test
performance ((approx)$85k). In addition to DOE allocated funds, to date approximately $240k has been cost-shared by the
participants, bringing the total project cost up to $540k as on September 30, 2003.