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Biomass CFB gasifier connected to a 350 MW{sub t}h steam boiler fired with coal and natural gas - THERMIE demonstration project in Lahti in Finland

Abstract

The successful experience in developing the advanced Foster Wheeler Energi Oy`s (former Ahlstroem Pyropower) Circulating Fluidized Bed combustion system subsequently led to the development of the CFB gasification technology in the early 1980s. The driving force for the developing work was the dramatic increase in oil price during the oil crises. The primary advantage of CFB gasification technology is that the it enables the substitution of expensive fuels e.g. oil or gas with cheap solid fuels. These cheap fuels are typically different types of waste woods, bark or other biofuels. In the CFB gasifier these solid fuels are converted to gaseous fuel which can be used instead of other expensive fuels. In some cases this also solves a waste disposal problem, providing a secondary economic and environmental benefit. Foster Wheeler Energia Oy has supplied four commercial scale atmospheric CFB gasifiers in the mid 80s to the pulp and paper industry with capacities from 17 to 35 MW based on fuel input. These applications utilize waste wood as feedstock and the units are still successfully operation today. Lahden Laempoevoima Oy is a Finnish power company producing power and district heat for the city of Lahti. The company is 50 % owned  More>>
Authors:
Palonen, J [1] 
  1. Foster Wheeler Energia Oy, Varkaus (Finland). Varkaus Global New Products
Publication Date:
Dec 31, 1997
Product Type:
Conference
Report Number:
NEI-FI-353; CONF-9709297-
Reference Number:
SCA: 090900; 092000; 200105; PA: FI-98:003579; EDB-99:000701; SN: 98002021665
Resource Relation:
Conference: ALTENER - bioenergy event in Finland, Jyvaeskylae (Finland), 1-5 Sep 1997; Other Information: DN: EU/ALTENER Research Programme; PBD: 1997; Related Information: Is Part Of ALTENER - Biomass event in Finland; PB: [76] p.
Subject:
09 BIOMASS FUELS; 20 FOSSIL-FUELED POWER PLANTS; BIOMASS; GASIFICATION; FLUIDIZED-BED COMBUSTION; CIRCULATING SYSTEMS; COAL; NATURAL GAS; FLUIDIZED BED BOILERS; DUAL-PURPOSE POWER PLANTS; WOOD WASTES; AIR POLLUTION ABATEMENT; CARBON DIOXIDE; SULFUR OXIDES; NITROGEN OXIDES; EMISSION
OSTI ID:
676789
Research Organizations:
VTT Energy, Jyvaeskylae (Finland). Biofuels
Country of Origin:
Finland
Language:
English
Other Identifying Numbers:
Other: ON: DE99706806; TRN: FI9803579
Availability:
OSTI as DE99706806
Submitting Site:
FI
Size:
pp. [8]
Announcement Date:
Dec 31, 1998

Citation Formats

Palonen, J. Biomass CFB gasifier connected to a 350 MW{sub t}h steam boiler fired with coal and natural gas - THERMIE demonstration project in Lahti in Finland. Finland: N. p., 1997. Web.
Palonen, J. Biomass CFB gasifier connected to a 350 MW{sub t}h steam boiler fired with coal and natural gas - THERMIE demonstration project in Lahti in Finland. Finland.
Palonen, J. 1997. "Biomass CFB gasifier connected to a 350 MW{sub t}h steam boiler fired with coal and natural gas - THERMIE demonstration project in Lahti in Finland." Finland.
@misc{etde_676789,
title = {Biomass CFB gasifier connected to a 350 MW{sub t}h steam boiler fired with coal and natural gas - THERMIE demonstration project in Lahti in Finland}
author = {Palonen, J}
abstractNote = {The successful experience in developing the advanced Foster Wheeler Energi Oy`s (former Ahlstroem Pyropower) Circulating Fluidized Bed combustion system subsequently led to the development of the CFB gasification technology in the early 1980s. The driving force for the developing work was the dramatic increase in oil price during the oil crises. The primary advantage of CFB gasification technology is that the it enables the substitution of expensive fuels e.g. oil or gas with cheap solid fuels. These cheap fuels are typically different types of waste woods, bark or other biofuels. In the CFB gasifier these solid fuels are converted to gaseous fuel which can be used instead of other expensive fuels. In some cases this also solves a waste disposal problem, providing a secondary economic and environmental benefit. Foster Wheeler Energia Oy has supplied four commercial scale atmospheric CFB gasifiers in the mid 80s to the pulp and paper industry with capacities from 17 to 35 MW based on fuel input. These applications utilize waste wood as feedstock and the units are still successfully operation today. Lahden Laempoevoima Oy is a Finnish power company producing power and district heat for the city of Lahti. The company is 50 % owned by the city of Lahti and 50 % by Imatran Voima Oy, which is the largest utility power company in Finland. Lahden Laempoevoima Oy operates the Kymijaervi power plant locating nearby the city of Lahti in Southern Finland. To keep the energy prices as low as possible, Lahden Laempoevoima is continuously looking for the most economical fuel sources, and simultaneously, trying to improve the environmental acceptability of the energy production. At the moment, about 300 GWh/a different type of biofuels and refuse fuels are available in the Lahti area. On an annual basis, the available amount of biofuels and refuse fuels is enough to substitute for about 15 % of the fuels burned in the main boiler equalling max 30 % of coal. The aim in this Lahden Laempoevoima Oy`s Kymijaervi power plant gasification project is to demonstrate the direct gasification of wet biofuel and the use of hot, raw and very low-calorific gas directly in the existing coal-fired boiler. The gasification of biofuels and co-combustion of gases in the existing coal-fired boiler offers many advantages such as: recycling of CO{sub 2}, decreased SO{sub 2} and NO{sub x} emissions, efficient way to utilize biofuels and recycled refuse fuels, low investment and operation costs, and utilization of the existing power plant capacity. Furthermore, only small modifications are required in the boiler, possible disturbances in the gasifier do not shut down the power plant. (author)}
place = {Finland}
year = {1997}
month = {Dec}
}