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Can Cattle Manure Be Made Into Pellet Fuel?

Date: 06/25/2020 08:51:59 From: Clicks:

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We know that cattle feed pellets are a kind of food pellets that cows can eat. Can cow dung be made into pellets? Sure, but not for food, but as fuel.A single farm may produce a score or more tons of cow manure per day, the cow dung can pollute the environment and our water source seriously without reasonable and timely processing.

Can Cattle Manure Be Made Into Pellet Fuel
Can Cattle Manure Be Made Into Pellet Fuel

Besides, it is also a great waste of resources. More than 2 billion people across the planet burn dried animal dung for energy. It is cheap, and it can be found in areas where wood is scarce. It is renewable, and it contains a reasonable amount of energy. However, burning it directly is a different matter and less energy can be extracted. Cow dung has an energy density of approximately 12 MJ/kg if burned with 100% efficiency. Therefore, how to make full use of this resource becomes extremely important.

Why Recycle The Waste Cow Dung Into Fuel Pellets?

In fact, the cow dung is a valuable resource for people in pellets production field. You might wonder why people would pelletize the cow manure, two very good reasons drive their utilization. First, cow manure is generally considered as a renewable energy source and it can be burned as “green power,” thus reducing greenhouse-gas emissions. Second, some cities and regions have limited landfills or waste treatment capacity, and recycling the waste can reduce the load on their waste disposal facilities. Another benefit from pelletizing these waste products is the tax credits for using renewable energy sources and good public relations karma. Still another benefit is that recycling the cow dung can prevent its decomposition into methane, a greenhouse gas that is much worse for the environment than carbon dioxide. Therefore, recycling the waste cow dung into fuel pellets is not only the perfect solution to the disposal of waste cow manure, but another profit for the farmers. And most importantly, the cow dung fuel pellet is a kind of clean and renewable energy source, and it can completely replace the coal, oil, natural gas, etc.

How To Make The Cow Dung Fuel Pellets

How To Make The Cow Dung Fuel Pellets?

1. Cow dung drying: different from making other biomass fuel pellets, the first step for making cow manure fuel pellets would be drying. Because there is too much water contained in the cow manure. If crush the cow manure first, the too wet manure may probably block the crushing machine. After drying, the moisture of mature is decreased to below 15%.

2. Manure crushing: after drying, the manure will become loose and can be processed by the crushing machine. The crushing machine will pulverize the cow dung into powder with the diameter of 2-5mm.

3. Manure pelletizing: when the manure powder is fed into the manure pellet machine, it will be pressed by the great pressure inside the pellet machine. Then manure fuel pellets are made. Ring die pellet mill and flat die pellet mill are available for your selection. Whether to choose the small one or large one depends on your own needs.

4. Pellets cooling: cow dung fuel pellets discharged from the pellet mill are high in temperature and moisture content, then goes the cooling step. After that, the pellets can be burned in the boiler, or used as fertilizer in soil. The pellets can also be sieved when cooling, so that poor quality pellets and powder materials will be collected and reproduced.

5. Pellets packaging: once the cow dung fuel pellets are formed and cooled, they can be packaged in bags or stored in bulk.

Comparison Of Calorific Value Of Horse Dung And Other Fuels

Fuels Values
Commercial fuels
Coal(gross calorific value)a
Hard coal 5000
Lignite beown coal 2310
Charcoal 6900
Petroleum products (net calorific value)
LPG 10800
Gasoline/naptha 10500
Kerosene 10300
Jet fuel 10400
Fuel oil 9600
Natural gas 8000 – 9480
Electricity 860
Agricultural residues
Paddy straw 3000
Rice husk 3040
Mango leaves 3390
Groundnut 4200
Sugarcane 3800
Wheaat straw 3800
Cotton stalks 4700
Maize stalks 3500
Maize cobs 3850
Bajra stalks 3950
Gram straw 3810
Masoor straw 3980
Forestry residues
Wood wastes 2500 – 3850
Bark 2500 – 2850
Animal wastes
Cow dung 3290
Cow dung cake 3140

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