Biomass
boilers
For
warm water
- BIO
Automated, pellet, wood chips,
- Farmer
Automated, pellet,wood chips,
wood logs, multifuel
- Automat
Self-loading, automated, pellet,
wood chips, multifuel
Steam boilers
- Low pressure steam (0,5bar) automated boilers
for biomass, pellet, wood chips, multifuel
Coal
boilers
- Automated brown coal boilers
For warm water or low pressure steam
Fuel
feeder systems
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Woodpellet |
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Wood pellets are a highly compressed
standardised product made from sawdust, normally without other additives.
Their advantages are:
• they are a consistent fuel with low moisture content which can
be easily handled in automated systems;
• bulk density is around 4 times that of wood chip, requiring less
storage room making them more convenient at a domestic scale. In
other countries bags of pellets are commonly sold on filling station
forecourts.
Their disadvantages are:
• supplies of locally made wood pellets are hard to find in the
EU, most are imported at present;
• they take energy to make and are often transported long distances,
reducing the environmental benefits of using a wood fuel;
• they are expensive, around twice the price of wood chip.
For the
CARBOROBOT boilers the wood pellet is essential biofuel.
More information
Woodpellet
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Agripellet,
agropellet |
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Agripellet, agropellet, or mixed biomass pellets (MBP) are a newcomer
on the pellet market. As national quality standards for MBP do not
exist (reference only on CEN standards) in domestic small scale
applications, trade and market structures for MBP will differ from
wood pellets.
With the tumultuous world energy situation a possible great variation
in energy prices appears in the near future. Since energy usage
is often very short term, longer term stability for agricultural
biomass is needed. In many areas, agricultural biomass can economically
heat factories, schools, homes, churches, grain bins, and farms.
Excess agricultural biomass can produce electricity, heat, or steam
for many rural or urban uses.
For the CARBOROBOT boilers the agripellet
is the most perspective biofuel. The boiler can operate with a wide
range agricultural biomaterial.
More information
Agripellet
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EUROPEAN standards
for solid biofuels Multipart standard EN14961 |
In aspect of the heating boiler construction there
is two main biomass pellet group:
Wood pellet made
from woody materials,(mainly sawdust)
Agripellet (agropellet) made
from agricultural biomass.
The most important different between the two pellet
types is the ash content.
The wood pellet have 05-1% ash and the agripellet have 3-10% ash.
For the wood pellet designed boilers not recommend to use agripellet
due to high ash contetnt. The agripellet cheaper than woodpellet.
For the
agripellet using need specialy designed boiler as CARBOROBOT.
Product standards for
- wood pellets (EN 14961-2),
- wood briquettes (EN 14961-3),
- firewood(EN 14961-5) and
- non-woody pellets (EN 14961-6)
- Wood chips for non-industrial use (EN 14961-4)
Product standards are targeted for non-industrial use in small-scale
appliances
The raw material for biofuel pellets
can be
- woody biomass,
- herbaceous biomass,
- fruit biomass, or
- biomass blends and mixtures
Pellets are usually manufactured in a die
The total moisture is usually less than 10% of their mass
BIOfuel pellet EN 14588, term 4.23
- densified biofuel
- made from pulverised biomass with or without pressing aids
- usually with a cylindrical form,
- random length and typically 5 to 40 mm, with broken ends
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Pelletting |
The term pelletting means the compressing
of agricultural and forestry materials. Pellets are compressed
products manufactured on circular cell roller presses, ranging
from 6 to 20 millimetres in size. More condensed pellets used
for heating range from 6 and 12 millimetres in size.
Important to ensure that wood and agri-pellet not handled too
roughly as they can disintegrate into (saw) dust.
Pellet and briquett plant Green
Dragon England
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Ring
press with pellet
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Ring
press
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The pelletting process (animation)
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Rapeseed briquette (England) |
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Straw
briquette |
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