advanced biomass based combined heat and power system
Download
Skip this Video
Download Presentation
Advanced Biomass-based Combined Heat and Power System

Loading in 2 Seconds...

play fullscreen
1 / 10

Advanced Biomass-based Combined Heat and Power System - PowerPoint PPT Presentation


  • 89 Views
  • Uploaded on

Advanced Biomass-based Combined Heat and Power System. Combined Heat & Power in the Pacific Northwest October 15, 2002 Nathan E. Carpenter Manager, Energy Boise. Presentation Outline. Forest Industry Energy Overview Typical Forest Industry CHP Application Proposed Next Generation Systems

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Advanced Biomass-based Combined Heat and Power System' - janae


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
advanced biomass based combined heat and power system

Advanced Biomass-based Combined Heat and Power System

Combined Heat & Power in the Pacific Northwest

October 15, 2002

Nathan E. Carpenter

Manager, Energy

Boise

presentation outline
Presentation Outline
  • Forest Industry Energy Overview
  • Typical Forest Industry CHP Application
  • Proposed Next Generation Systems
  • Technology Gaps
  • Policy Issues
  • Summary
forest industry energy overview
Forest Industry Energy Overview
  • Ranked third in overall energy intensity
  • Main users are the integrated pulp & paper facilities
  • Industry 54% self-sufficient, mainly due to biomass
  • ~65% of thermal needs generated internally
  • ~25% of electrical needs generated internally
typical forest industry chp system
Natural

Gas

BFW

Steam

to Mill

Air

Bark &Solids

Typical Forest Industry CHP System
  • Conventional stoker fired combination fuel boiler
  • High pressure topping cycle using back-pressure steam turbine-generator with low pressure exhaust to process heat loads
  • Natural gas used strategically to increase reliability and stabilize combustion
  • Fuel to electricity efficiency 62-73%(cogeneration mode with some natural gas firing)
  • Capital $1500 to $2000 / kw

To Flue Gas Cleanup

SteamTurbine

Stoker Boiler

Ash & Char

traditional igcc approach to biomass based power generation
“Traditional” IGCC Approach to Biomass-based Power Generation
  • High pressure (15-25 ATM) biomass feeders, gasifier, ash and fines removal, and hot gas cleanup system
  • Low caloric value gas turbine topping cycle and steam turbine bottoming cycle
  • Fuel to electricity efficiency 35-40%
  • Capital $1500 to $2500 / kW
  • NOx emissions over 150 ppm

Bark & Sludge

Hot fuel gas

High PressureHot Gas Cleanup

High Pressure Feed System

High PressureFly AshRemoval

HighPressureGasifier

Clean Fuel Gas

Fly Ash

High PressureCombustor

Air

Air toGasifier

Gas Turbine

High PressureAshRemoval

Water

Air

Ash

Steam

Heat

Recovery

Steam

Generator

Steam Turbine

Flue gas

Condenser

evolutionary approach to biomass based power generation
Natural

Gas

BFW

High PressureCombustor

Steam

to Mill

Air

Natural

Gas

(Backup)

Bark &Solids

“Evolutionary” Approach to Biomass-based Power Generation

(Backup)

  • H2-rich syngas increases wood waste utilization and boiler capacity
  • Low pressure biomass feeders, gasifier, and ash systems
  • System uses existing flue gas cleanup system
  • Gas turbine topping cycle only-using HP heated air as working fluid
  • Natural gas used strategically to increase reliability and increase power generation efficiency
  • Fuel to electricity efficiency 65-73% (cogeneration mode)
  • Capital $1000 to $1500 / kW
  • NOx emissions below 60 ppm

2200 F

1800 F

To Existing Flue Gas Cleanup

Gas Turbine

Syngas

Existing Stoker

Gasifier

Ash & Char

Ash

benefits and features of advanced biomass based power generation
Utilizes existing infrastructure

Increased biomass usage for electricity generation

Increased biomass usage for steam generation

Improves boiler performance

Improved load following

Increased efficiency

Higher carbon burnout

Increased steam capacity

Reduced electricity costs

Reduced emission

Natural

Gas

BFW

High PressureCombustor

Steam

to Mill

Air

Natural

Gas

(Backup)

Bark &Solids

Benefits and Features of Advanced Biomass-based Power Generation

(Backup)

2200 F

1800 F

To Existing Flue Gas Cleanup

Gas Turbine

Syngas

Existing Stoker

Gasifier

Ash & Char

Ash

technology gaps
Natural

Gas

BFW

High PressureCombustor

Steam

to Mill

Air

Natural

Gas

(Backup)

Bark &Solids

Technology Gaps

(Backup)

  • Materials for HPHT Air Heater
  • Gas Turbine System for HPHT Air
  • Utilization of Hot Air Generation
  • System Integration

2200 F

1800 F

To Existing Flue Gas Cleanup

Gas Turbine

Syngas

Existing Stoker

Gasifier

Ash & Char

Ash

policy issues
Policy Issues
  • Permitting hurdles
  • Recognition of societal benefits
  • Technical support
  • Financial incentives
summary
Summary
  • Forest products facilities are excellent host sites for distributed, combined heat and power projects
  • Renewable energy based
  • Additional societal benefits
  • Regional synergies
  • Need financial incentives and technical support
ad