Coffee skin coffee residues coffee husk coffee waste ground coffee
powder pellet line
Coffee ground has low-carbon and environmental combustion
material,the oil extracted from spent coffee grounds can be further
processed into bio-diesel,and their leftovers can be pelletized
into solid biomass fuel which possesses higher heat value over
those made from wood and agricultural wastes.
Different from the whole procedure of
crushing,drying,pelletizing,cooling and packing for other
material,coffee grounds pelletizing is much easier and far more
convenient to be completed in virtue of their own features and
|Name||coffee pellet production line|
|Raw material||coffee skin,coffee husk,coffee waste ground,coffee powder,etc.|
|Final product||biomass fuel in 6 or 8mm diameter|
Coffee skin coffee husk coffee waste ground information:
for most other raw materials,a drum dryer is needed because biomass
pellet machine has a strict requirement for their waste
2. carbon content:
generally more carbon content equals to better combustion feature
and higher heat value,the coffee ground takes the top place among
various kinds of material because of its 52.2% content.
3. ash content:
different from other biomass wood waste or agricultural waste,the
coffee ground has less ash content,because it is obtained in the
making process of food which has been well cleaned and inspected.
4. lignin content:
lignin plays the role of additive during coffee grounds
pelletizing,whithout such substance,the final biomass pellet may
not be hard enough and break easily.
5. heat value:
the heat value of waste coffee grounds is more than 4200MJ/kg,this makes coffee pellet more ideal biomass fuel.
Coffee ground pellet production:
1. pelletizing process
the dried coffee waste ground are fed into pellet machine chamber
and sent into the space between rollers and die under the rotating
strength of rollers,with enough pressing force of die and rollers
on materials and friction between die and materials as well as
materials and rollers,they are squeezed out as coffee ground
2. cooling process
the counter flow type pellet cooler is adopted for the high
temperature coffee pellets.Its working principle is the opposite
direction of material and air feeding,the pellets from top to
bottom while the wind coming from bottom to top,which can prevent
coffee pellet's surface cracking and ensure their cooling effect.
3. packing process:
after being pelletized and cooled,the coffee pellets will be packed
in order to make sure subsequent storage and convenient delivery.
We have two packing ways,one in ton bag packing machine in
600~1200kg/bag,the other is small bags packing like from
15~50kg/bag as per customers' requirements.
Advantages of coffee pellets
1. higher heat value
there are 52.2kg of carbons in every 100kg of coffee waste
ground,which contributes to the high heat value of coffee
pellets,reaching more than 4200MJ/kg.While the wood pellets
normally has 4200~4300MG/kg.
2. lower cost of raw material
coffee grounds normally comes from individuals,shops and
factories,they throw way those coffee ground.so the cost of coffee
waste ground is lower than others.
3. cleaner property
unlike other biomass raw material,coffee ground is coming from
coffee beans,which must be pre-processed so that both the finished
product and byproduct are clean and have no harm to human body.
4. short growing period
when raw material is wood type,the growing period of trees is about
4 year,while coffee bean only takes half of a year.that means you
can get coffee waste material more easily.
Why coffee pellet production is becoming popular:
1. the problem of energy shortage is more and more vigorous,so
development and production of biomass pellet fule has become a way
2. And,it will bring decontamination burden for environment if just
throwing away of waste coffee grounds.
3. Besides,the coffee ground used as fertilizer are harmful for
soil due to the caffeine,tannis and polyphenols.
We have been successfully made coffee pellets from different type
coffee waste with video and pics,if you are interested in this
pellet line,please contact us freely for more information.