Engineering topics
Publications and source records attributed to Lewis, Eric.
This techno-economic analysis evaluates the cost and performance of supercritical pulverized coal and natural gas combined cycle power plants (with and without 90% CO 2 capture) with wet, dry, and wet/dry hybrid cooling systems.
Presented by NETL at the EPRI Fall 2018 Generation Sector Advisory Meetings
Presented by NETL at Power Gen International, 12/7
Presented by NETL at 2017 NETL Crosscutting Research & Analysis Program Portfolio Review, 03/17
One of the more significant issues related to carbon capture retrofits pertains to the reduction in net power output (derate) due to the large parasitic power load required for appreciable levels of carbon capture. Post-combustion capture (PCC) has been shown to reduce the net plant efficiency of an equivalent plant without capture by 20 percent or more. Yet, post-combustion amine scrubbing is anticipated to be the most viable near-term technology for reducing carbon dioxide (CO 2 ) emissions from existing coal plants. This study attempts to quantify auxiliary load replacement options for existing pulverized coal (PC) boilers to reduce the effects caused by steam and power requirements of the CCS systems and the resulting derated output of the existing plant. While individual retrofit options are highly plant-specific and, therefore, subject to unique optimization pathways, each of the proposed cases in this study attempts to examine the most promising configurations for each repowering technology.
This study presents the cost and performance of retrofitting natural gas combined cycle (NGCC) power plants with post-combustion carbon capture based on an advanced solvent process. Cases developed include using a current state-of-the-art F-frame turbine, and H-frame turbine and an advanced J-frame turbine. Cases include both greenfield and retrofit analysis.
The objective of this study was to establish the cost and performance for a range of carbon dioxide (CO 2 ) capture levels for new supercritical (SC) pulverized coal (PC) and integrated gasification combined cycle (IGCC) power plants. The SC PC cases (Case 1 series) utilize Fluor’s Econamine FG Plus SM process for post-combustion CO 2 capture via temperature swing absorption with a 30 wt% monoethanolamine (MEA) solution as the chemical solvent. The IGCC cases (Case 2 series) employ a slurry-fed, entrained-flow General Electric Energy (GEE) gasifier and leverage UOP’s (formerly Universal Oil Products) two-stage Selexol™ process for bulk CO 2 capture and selective hydrogen sulfide (H 2 S) removal via pressure swing absorption. The Selexol™ process uses dimethyl ether of polyethylene glycol (DEPG) as a physical solvent for pre-combustion capture.
Objective is to establish baseline performance and cost estimates for today’s fossil energy plants, it is necessary to look at the current state of technology. Such a baseline can be used to benchmark the progress of the Fossil Energy RD&D portfolio. This study provides an accurate, independent assessment of the cost and performance for Pulverized Coal (PC) Combustion, Integrated Gasification Combined Cycles (IGCC), and Natural Gas Combined Cycles (NGCC), all with and without carbon dioxide (CO 2 ) capture and sequestration assuming that the plants use technology available today.
The objective of this study was to simulate biomass co-firing in a dry-fed, entrained-flow gasifier in an integrated gasification combined cycle (IGCC) power plant and examine the resulting performance, environmental response, and economic response. To develop a more complete understanding of the impact of co-feeding biomass, each case was examined using a limited life cycle greenhouse gas (GHG) analysis, which examines GHG emissions beyond the plant stack. Included in the limited life cycle GHG analysis were anthropogenic greenhouse gas emissions from the production, processing, transportation, and fertilization of biomass and from mining, transporting and handling coal.
The objective of this study was to simulate biomass co-firing in greenfield Pulverized Coal (PC) power plants and examine the resulting performance, environmental response, and economic response. To develop a more complete understanding of the impact of co-feeding biomass, each case was examined using a limited life cycle greenhouse gas (GHG) analysis, which examines GHG emissions beyond the plant stack. Included in the limited life cycle GHG analysis were anthropogenic greenhouse gas emissions from the production, processing, transportation, and fertilization of biomass and from mining, transporting and handling coal.
Retrofitting existing PC plants with amine-based CO 2 capture technology is thermally- and power-intensive. This study examines the benefit of installing a natural gas simple cycle to provide the auxiliaries required to operate the amine system such that the original power demand can still be met.