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PROJECT
STATUS
This
3R EU-FP5 Multi Fuel project and pilot plant test operations
successfully ended in August 2005. The extensive engineering
scale up works continued in 2006 and 2007, which resulted, that
the 3R technology passed from late phase of applied scientific
research phase to industrial demonstration phase.
The 3R
technology has been licensed to an British - American
environmental clean technology organization in June 2007 with
clear objective to build up solid fuel pretreatment Clean Coal
global network for energetic applications for the solid fuel
power generation industry up to 300 MWe power capacity, including
manufacturing of 3R industrial equipments.
The first 3R
industrial demonstration plant - USA installation - is under
construction in 2007/2008 with 30,000 t/year throughput capacity
by a 26m lenght indirectly heated 3R rotary kiln vessel.
PROJECT
BACKGROUND
The
low temperature carbonization of low grade brown coals
significantly reduces volatile matter and increases the carbon
content of the feed material. During the preventive measure "3R"
recycle-reduce-reuse technology carbonization pretreatment
process the volatile compounds, - including moisture content,
organics and hazardous air pollutants "HAP's" such as
S, Cl and Hg, - are removed and treated in downsized process gas
streams. The patented 3R solid fuel refinement pretreatment
process provides significant technical advantages, such as safer,
better, faster and less costly treatment of HAP contaminated flue
gases and its residuals in downsized stream, resulting overall
environmental achievements towards near zero emission targets.
Due to the release of volatiles the cleansed solid fuel end
product, called Clean Coal (CC), has higher carbon and lower S,
Cl and alkali content.
The 3R process produces a high
quality environmentally friendly CC, which is chemically similar
to anthracite and can be utilized for combustion in small to
medium sized coal fired power plants up to 300 MWe power
capacity. This makes the 3R treatment of particular interest for
combination of low grade coals - such as brown coals - and in
combination with biomass. As most of the Western World's coal
reserves are of low grade quality, the new 3R coal refining
process extends the strategic local availability of the clean
solid fuel streams for clean energy production and decreasing the
oil and gas dependence as well.
Within the context of the
EU FP5 NNE5/363/2001 project "TDT-3R Clean Multi Fuel"
RTD project innovative carbonization rotary kiln and
comprehensive technology has been developed and the CC end
products combined with "multi fuels" has been
successfully co-combustion tested in German test facility in
2005. The pilot test plant has been built in Hungary 2003-2005
and scale up pre design made for up to 560,000 tons per year
brown coal feed stream throughput.
By carbonization
pretreatment option increase in the calorific value is achieved
while significant removal of the HAP's made before burning in the
main boiler unit. Furthermore, feed flexibility and power plant
efficiency are increased while overall power plant equipment
corrosion risk and environmental load at the "end of the
pipe" are decreased. The potential benefits of clean multi
fuels include: turning low grade solid fuel into high grade -
thus flexibly widen the selection of locally available fuel
options-, very low water content, high heating value, low Alkali,
Sulphur and Chlorine content, low cost and CO2
reduction potential. The low temperature carbonization treatment
does increase the ash content, but it may also increase the ash
melting point, and therefore make CC more suitable for combustion
under conditions normally reserved for hard coal or anthracite,
without danger of fouling and / or slagging of the boiler and
heat exchangers.
The results show that the combined
biomass feedstock quality can be considerably increased and
emissions can be significantly reduced through the 3R preventive
pre-treatment process.
The 3R "Clean Coal"
technology offers environmentally sustainable and cost-effective
alternative preventive pretreatment technology for the coherent
and long termed integration of low grade brown coal and biomass
feed streams into the modern and environmentally sustainable
fossil fuelled clean energy markets in Europe and elsewhere world
wide. The interlinked application of the new 3R process opens new
technical and economical opportunities towards the near zero
emission targeted safer, faster, better and less costly clean
energy production in the solid fuel utilization industry.
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