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Making Fuel Pellets From Hemp Is The Most Efficient Fuel Pellet Process

Date: 08/17/2020 08:34:40 From: Clicks:

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While wood pellets are currently where the fuel pellet market is focused, hemp pellets could hold significant market share in the future. As the use of industrial hemp scales up, more hemp shiv and shiv dust will be produced. That’s a particular aspect of hemp fuel pellets I find so appealing. The raw material is a byproduct of a byproduct. It means making fuel pellets from hemp is the most efficient/sustainable fuel pellet process there is.

This is where hemp fuel pellets come in. Hemp pellets produce around 2% ash and can be used in a large range of pellet burners currently on the market today. Hemp is less corrosive to burn than wood pellets, creates less ash, and always has the same high quality as what you find in premium grade wood pellets. This product comes from the shiv of the hemp stalk and has no possibility of including any additional material that can lead to a lower grade of quality.


The demand for woody shiv is still in its infancy in Canada and the UK and the United States is interested in hemp harvesting and renewable energy. With the Farmer's Almanac reporting a colder than usual winter season this year, legislators need to step up efforts in recognizing hemp as a natural alternative for energy.

What Are The Issues With Other Biomass Materials?

Before we discuss the benefits of hemp pellets, we need to address the issues other biomass fuel pellets experience during combustion. The pellet fuel market is now developing to include other biomass energy crops such as miscanthus, switchgrass and hemp. All of these biomass materials can be collected and processed in the pellet mill to produce grass pellets which are suitable for fuel-flexible pellet stoves and boilers. However different biomass materials produce different combustion results. We have seen this through our experiments with our own biomass pellet boiler.

The Issue of Ash Content

While miscanthus and switchgrass both have their merits, they also have their issues. The problem with most grasses and straws is during combustion they produce a significantly higher ash content than say premium wood pellets. Many pellet stoves and boilers are designed specifically to burn wood pellets with an ash content below 2%. Therefore using grass pellets can often create issues. With some biomass pellets, the ash content can be as high as 10%. Therefore this either means the ash bin fills up really quickly or in some cases, the pellet stove or boiler can stop working altogether.

Clinker Formations

The other problem with some biomass fuel pellets made from grasses and straws is clinker formations. Clinkers are where the ash melts and forms together into a clump. Most pellet stoves and boilers have no means to deal with clinkers, as they were specifically designed to run on wood pellets. When the clinker is hot it’s soft and sticky. However, when it cools it’s as hard as glass. Luckily our pellet boiler is very durable and able to deal with such clinkers. However, most pellet stoves are not. And a clinker such as that shown in the image above could do a small pellet stove some serious damage.

hemp Pellets
hemp Pellets 

Why Are Hemp Pellets Different?

Well, hemp pellets, unlike other none woody biomass fuel pellets, produce only around 2% ash content. Therefore hemp pellets can be used in a much larger range of pellet stoves and boilers currently on the market today.

Another advantage is that hemp pellets are no more corrosive to burn than wood pellets. This is not the case with fuel pellets made from straw, miscanthus and switchgrass. Finally, hemp pellets do not produce clinker formations as the ash melting temperature of hemp is similar to wood.

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