Title: Advanced circulating pressurized fluidized bed combustion (APFBC) repowering considerations
Abstract: This paper describes some of important plant repowering design consideration needed to integrate an advanced coal-fired technology to an existing steam plant. These are important to understand if one chooses to integrate advanced circulating pressurized fluidized bed combustion combined cycle technology (APFBC) with an existing steam turbine/generator. These considerations were developed in a series of DOE-sponsored APFBC repowering concept evaluations at the Carolina Power and Light L.V. Sutton power station Units 1 and 2, the Duke Power Dan River power station Unit 3, and the New York State Electric and Gas Greenidge power station Units 3 and 4. It is often more economical to keep existing generation capacity in operation than to build new capacity. This is true for APFBC repowering. All-coal fired APFBC repowering has been found to be an economical alternative source of new capacity for electric utility companies who are considering adding baseload coal-fired capacity. Capital investment is lower with APFBC repowering than new pulverized coal plant construction, since a significant amount of existing equipment is retained. In addition, operations with APFBC have significantly lower operating costs, and APVBC use significantly improves environmental performance of existing units. Utility company production costing evaluations have shown that APFBC technologymore » promotes a low-use unit from 10% capacity factors to first-dispatched baseload status. APFBC can be considered for a coal-fired repowering option at a number of sites because of the need for added capacity, the poor condition of plant equipment (particularly the boiler), the need for improved environmental performance the need for shorter licensing period, and other reasons. However, repowering an existing site with this technology raises a number of plant integration issues that are important considerations for any company contemplating this type of plant upgrade. This paper focuses on these issues.« less
Publication Year: 1998
Publication Date: 1998-07-01
Language: en
Type: article
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Cited By Count: 2
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