View Full Version : Compare Grass Pellet Machine and Wood Pellet Machine

05-20-2015, 05:10 AM
Grass biofuel pellet is a kind of pellet produced by pressing chopped grasses into a form similar to wood pellets. Grass pellet machine is our new machine which mainly faces to the consumers lived in some areas where is rich in switch grass. It is able to make switch grass into pellets for different purposes. Wood pellet machine (http://www.woodpelletmillchina.com/pro/wood_pellet_mill.html) is used to force biomass materials from the agro-forestry wastes such as sawdust, wood chips, rice or wheat hulls etc. to mold cylinder pellet fuel that is glabrous, hard and high-calorific.

Generally speaking, grass pellet mills operate at a higher speeds than wood pellet mills do, why? Since materials, such as grass and straw, have a lower density than wood, it is easier to gelatinate, which demands higher die speeds to reduce the machine damage and cost of grass pellets. Making pellets from grass cost less than making pellets from wood. Large scale production of grass fuel pellets can be of a benefit to agriculture and the rural economy, as well as ecologically attractive.
In addition, grass pellets have very different combustion characteristics that are different from wood pellets. For example, grass pellets in general will produce a much higher ash content, and the ash possibly creates a clinker and slag formations which is easy to increase the risk of corrosion of the pellet stove or boiler. Besides, during combustion, many grass pellets will generate at a higher temperature, If grass pellets are used in most pellet stoves and boilers, it may bring safety problem. For these reasons, usually, the grass pellet mills are special designed for dealing with materials which are soft, and with lower density. On the contrary, the wood pellet mills (http://www.paradisedivingasia.com/equipment/wood-pellet-mill.html) tend to deal with wood and other hard materials.
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