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Welcome
Themes
Introduction to forest-based bioeconomy
Wood products
Natural fibre products
Man-made bio-based fibre products
Bio-based nanomaterials
Recycled fibre
Pulping and biorefining
Energy and biofuels
Biomass chemistry and physiology
Material testing and product properties
Forests and other biomass resources
Supply chain
Process control and automation
Asset management
Business and investment planning
Environmental control and management
Learning paths
Learning path A
Learning path B
Other resources
Papermaking Science and Technology books
Podcasts
Webinars
Tools
How to use
Dictionary
Glossary
Contact
Contact us
Contributors
Profile
Flue gas heat recovery
After reading this article you will..
understand why heat is recovered from the flue gases.
understand what effect flue gas condensing has on heat recovery.
Content
Energy and biofuels
Introduction to Energy and biofuels
Global forest industry energy use
Production processes recovery and energy
Chemical recovery
Evaporation
Principles of evaporation
Steam economy
Recovery boiler
Causticising
Lime kiln
Biomass boiler
NCG destruction
Auxiliary boilers
Energy consumption trends in forest industry
Challenges in comparing mill energy consumption
Heat and electricity demand in chemical pulping
Trends in heat and electricity demand in chemical pulping
Heat and electricity demand in integrated pulp and paper mill
Heat and electricity demand in mechanical wood processing
Three different ways to consume and produce energy
Defining the energy consumption in modern processes
Energy use in sulphate (kraft) pulp production
Energy use in mechanical pulp production
Energy use in paper and board manufacture
Energy use in newsprint
Energy use in non-integrated graphic paper
Energy use in non-integrated tissue
Energy use in mechanical forest industry
Energy supply in forest industry
Heat and power generation
Material and energy balance
Example mass balance
Example flue gas
Example steam flow
Heat and power balance in a modern greenfield pulp mill
Energy production with options for increased power production
Steam parameters
Firing black liquor dry solids
Increased feed water and air temperature
Back-pressure turbines with controlled extraction
Improvement for sootblowing
Condensing turbine with controlled extraction
Flue gas heat recovery
Novel solutions in the pulp mill energy supply
Lignin removal
Biomass fuels from lime kiln
Transportation biofuels from tall oil
Metsä Fibre Äänekoski bioproduct mill
Torrefaction for biofuel production
Biomass gasification
Alternative processes
Improvement of energy efficiency
Improvement of skills and motivation of personnel
Agreement on energy conservation and energy audits
Process integration
Monitoring and control
More energy-efficient technologies
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Authors & references
Authors:
Professor Esa Vakkilainen, LUT University
References:
Westberg, Å. (2007). Optimering av elproductionen vid SCA Östrands massafabrik. Panndagarna 7–8 February, Uppsala.
Videos
Exercises
This page has been updated 15.11.2020
