NDLI: The Local Heat Balance in a Stationary Fluidized-Bed Furnace Burning Biomass Fuels

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Niklasson, Fredrik Johnsson, Filip
Copyright Year	2003
Abstract	This work investigates the influence of biomass fuel properties on the local heat balance in a commercial-scale fluidized bed furnace. Experiments with different wood based fuels were performed in the Chalmers 12 MWth circulating fluidized bed boiler, temporarily modified to run under stationary conditions. A two-phase flow model of the bed and splash zone is applied, where the combustion rate in the bed is estimated by global kinetic expressions, limited by gas exchange between oxygen-rich bubbles and a fuel-rich emulsion phase. The outflow of bubbles from the bed is treated as “ghost bubbles” in the splash zone, where the combustion rate is determined from turbulent properties. It is found that a large amount of heat is required for the fuel and air to reach the temperature of the bed, in which the heat from combustion is limited by a low char content of the fuel. This implies that a substantial fraction of the heat from combustion of volatiles in the splash zone has to be transferred back to the bed to keep the bed temperature constant. It is concluded that the moisture content of the fuel does not considerably alter the vertical distribution of heat emitted, as long as the bed temperature is kept constant by means of flue gas recycling.
Sponsorship	Advanced Energy Systems
Starting Page	859
Ending Page	870
Page Count	12
File Format	PDF
ISBN	0791836800
DOI	10.1115/FBC2003-089
e-ISBN	0791836754
Conference Proceedings	17th International Conference on Fluidized Bed Combustion
Language	English
Publisher Date	2003-05-18
Publisher Place	Jacksonville, Florida, USA
Access Restriction	Subscribed
Subject Keyword	Heat balance Combustion Biomass Fluidized bed boiler Heat Furnaces Boilers Fuels Fluidized beds
Content Type	Text
Resource Type	Article

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

Improvement on Dynamic Combustion Model of Dense-Phase Zone in Circulating Fluidized Bed Boiler Furnace

The Structure and Performance of a New Type of Industrial Circulating Fluidized Bed Boiler With a Circulating Ash Heat Exchanger

On Effect of Air-Separating Grid on Low-Grade Solid Fuels Combustion in a Fluidized Bed

Numerical Simulation of the Combustion Behavior of Different Biomasses in a Bubbling Fluidized Bed Boiler

Development Of Fluidized Bed Boilers For Biomass And Other Waste Fuels

Fireside Deposit Formation in Biomass Fired FBC: A Comparison Between Tests Performed in Three Significantly Different Sized Combustors

Mathematical modelling of biomass fired fluidized bed boiler

Combustion and Emission Performance of a Hog Fuel Fluidized Bed Boiler With Addition of Tire Derived Fuel

Agglomeration of Bed Material: Influence on Efficiency of Biofuel Fluidized Bed Boiler

The Local Heat Balance in a Stationary Fluidized-Bed Furnace Burning Biomass Fuels

Similar Documents

Improvement on Dynamic Combustion Model of Dense-Phase Zone in Circulating Fluidized Bed Boiler Furnace

The Structure and Performance of a New Type of Industrial Circulating Fluidized Bed Boiler With a Circulating Ash Heat Exchanger

On Effect of Air-Separating Grid on Low-Grade Solid Fuels Combustion in a Fluidized Bed

Numerical Simulation of the Combustion Behavior of Different Biomasses in a Bubbling Fluidized Bed Boiler

Development Of Fluidized Bed Boilers For Biomass And Other Waste Fuels

Fireside Deposit Formation in Biomass Fired FBC: A Comparison Between Tests Performed in Three Significantly Different Sized Combustors

Mathematical modelling of biomass fired fluidized bed boiler

Combustion and Emission Performance of a Hog Fuel Fluidized Bed Boiler With Addition of Tire Derived Fuel

Agglomeration of Bed Material: Influence on Efficiency of Biofuel Fluidized Bed Boiler

The Local Heat Balance in a Stationary Fluidized-Bed Furnace Burning Biomass Fuels