Friday, May 19, 2017

Why make pelelts from oak wood?



About Oak Wood Pellets
This kind of pellet appeared in our offer in 2011 and from the very beginning has been gaining larger and larger group of customers. Deciduous sawdust, noble oak tree - all this had an impact on high demand. Hardwood – oak does not dirty chimney openings, as it happens in case of pine or spruce, which was also noticed by the customers. This pellet is produced from its own sawdust, so that the quality and its composition is fully under control. This is very important in the production of a high quality pellet. The granulate itself is produced on the specially prepared, reamed dies of Italian manufacturer of devices destined for pellets production. The reaming is necessary due to the fact that oak sawdust has very little resin and bonding it to the form of pellets was quite a big challenge. A very attractive price is an additional motivation for our customers to purchase this kind of pellet. Pellets made of pure oak sawdust, contains no binders, adhesives, chemicals.

Oak wood pellets for BBQ
When BBQ pellet companies refer to a 'base' in their pellets, they are taking about the stable hardwood substance of their pellet. Most companies either use oak or alder as their base, we like to use alder. All of our flavors of pellets have a 75% alder base, with the other 25% being the main flavored hardwood. For example, our hickory pellets are 75% alder 25% hickory, our mesquite pellets are 75% alder 25% mesquite, and so on.

These Oak wood bbq pellets are 100% wood with no additives, mixes, cheap fillers, just good old fashion bbq wood the way it should be!

The pellets are of light brown colour because of used oak sawdust. Their darker colour does not mean lower quality as is often suggested. Oak is valuable natural fuel, which is why our pellets have high calorific value 18,51 MJ/kg, burning time 30% higher than coniferous wood and low ash content (0,49%). Because of the longer burning time, it is necessary to adjust batching to boilers and reduce it by about a third when switching to hardwood pellets.

What is the difference between oak pellets and pellets from coniferous tree species?
The first distinguishing feature is the colour. Darker colour of oak pellets is given by natural brown colour of wood. There is a common misconception in a society according to which the pellets of dark colour are generally of poor quality because they must contain the bark. However, it is not so. Pellet containing bark can be identified by irregular dark spots. If the pellet is darker as a whole but without significant dark spots, it is not a pellet containing bark. Another difference compared to pellets from coniferous wood is burning time, which is about 30% longer. It is necessary to adjust batching to boilers and reduce it by about a third.

How can we recognize the quality pellets?
At first glance you can recognize the quality of pellets mainly according to their colour and shape. The pellet should be uniform in colour, without spots and its surface should be shiny and compact. Pellet quality also depends on the used technology which reflects in hardness of pellets. The harder the pellets, the better their production process.
Important parameters of the quality are heating power, water content and ash content. Pellets that meet ÖNORM M 135, DIN plus or EN PLUS A1 have set values parameters ​​that guarantee the highest quality of pellets.

Monday, January 23, 2017

Complete Wood Pellet Plant Process


Usually a whole biomass pelletizing plant includes the following sections: raw materials crushing, drying, pelletizing, cooling and packing. The pelleting process varies from one raw material to another. Feel free to contact us for detailed pelletizing plan for your raw material. The following shows the complete biofuel pellet plant from raw wood (logs).

Debarking
If you use wood logs, timber or lumber as material for a wood pellet Plant, the first step is to debark logs to facilitate following steps of chipping and pulverization, therefore a wood barking machine is demanded.

Chipping
The step is to reduce size of the material from logs to wood chips with the universal size of about 2cm*2cm for pulverization.

Hammer Mill
Generally, hammer mill will be applied to crush chipps into smaller size of powder. However, a, integrated crusher can be used as well to decrease size of material for pelletization. Besides, two-time pulverizing may be considered as well to achieve a better pelletizing performance and ensure pellet mill will work stably.

Screening
A sifter is bound to use if the material you possess are beyond purity. The step is to cleanse and purify material with iron scraps, oversized impurities and alleviate damages as well as wear and tear to successive machines. Apart from the special sifting equipment, We will offer magnet tubes installed on conveyers and pre-pelletizing surge bin to multi-deironing metal foreigner matters.

Drying
The moisture content of material may remain higher than the required for pelletization. Therefore drying system is needed to reduce moisture content to about 12%-15% for pelletization.

Pelletizing
Flat die pellet machine is the best equipment for small scale pellet production (capacity 200~1000kg/hour), while for large-scale projects, ring die pellet machine is recommended.

Pellet mill is the most pivotal machine within a pellet plant. After being pelletized, material will be formed into granule shape or column/cylinder shape. For a larger scale plant, from time to time more than one wood pellet mill is needed, for example 4 or 6 tons pellets per hour and ABC Machinery is also excelling in providing large scale wood pellet plants combined with pellet mill assembly.

Dedusting System
Alongside pellet Plants, dedusting system is entitled to putting into practice with pelletizing system for reducing fly ash emissions. ABC Machinery adheres to the concept of environmental protection and purifying working environment. The cleaning system is composed of pulse dust collector, cyclone, pipeline and air lock.
ABC Machinery can provide clients with either manual dust collector and pneumatic pulse dust collector based upon different needs. Pulse dust collector is upgraded based upon Manual dust colletor but equipped with pneumatic system and metal cover so that manual force can be replaced by automatic dedusting system. Besides, the bags inside can be renewed with low costs and less maintenance.

Cooling
Newly produced biomass pellets are scolding due to the high temperature and high pressure during pelletizing. And a cooler will then be demanded to ensure the ensuing packaging and a longer storage time of pellets.

Sifting
Some powdery material may also flow from pellet mill with qualified pellets, in this regard, it is proved that a sieve will separate the small amount of disqualified mealy material from good pellets and also to qualify pellet packages.

Packaging & Slealing
Packing scale can be inquired with ABC Mahcinery too. Pellets can be weighed and packed in bags to facilitate pellet storage, transportation and marketing. The packing scale models are varied according to clients' demands. We can offer both small bag packing scale and bulk bag packing scale. And Packing machine offered by ABC Machinery is also integrated with sealing machine as a whole.
Wood pellet plants manufactured by ABC Machinery cover a wide range of pruduction yield from 0.5t/h to 12t/h, but for a smaller pellet plant with production output of less than 0.5t/h, it can be offered as well such as a biomass pellet project of 300kg/h or 200kg/h. Link to moveable pellet plant.

Electric Control System
Within a pellet plant, PLC electrical control system is mainly applied and ABC Machinery  can offer PLC system with lavishly professional experience. And the PLC cabinet can be printed on the surface with operator-oriented mimic diagram of pellet plant so that operators can get to know the entire system and master control procedures.

As we know, Regulations and provisions on electricity are different from one country to another. ABC Machinery has accumulated seasoned skills and abundant experience in connecting a variety of eletrical control system with pellet plant. Therefore, ABC Machinery can offer both standardized electrical system based upon China's use and the ones according to your demands to meet local standards for clients.