After being dried by the sawdust dryer, the sawdust is compressed into tubular rods, and then carbonized into charcoal, which is a new fuel in the rural energy industry. Recently, the export prospects and prices of this kind of carbon are very good, so start some rural energy industry projects. However in the whole process of sawdust compression and carbonization, the technical requirements are very high, if not followed, it is easy to lead to failure. The following is an introduction to the key process of sawdust drying before compression.
If the drying of carbon in sawdust is not uniform, splashing will occur in the compression process, which will affect the compression degree of sawdust. If high temperature drying is used, the carbon chain will be broken and the carbon strength produced is not enough. Therefore, the sawdust drying machine is the key link in the whole sawdust drying process.
Like this kind of material as sawdust should adopt hot air drying device, that is to say, sawdust is heated and transported by high temperature air according to the production requirements. Sawdust floats in the hot air stream and is surrounded by hot flue gas.
Sawdust dryer machine also is called rotary sawdust dryer. Inside the sawdust dryer there are many welded lifting plates and guide plates which working together with hot air to disperse the sawdust sufficiently inside the sawdust dryers cylinder, so that have high heat exchanging efficiency between the hot air and water vapor. After the sawdust drying process, the moisture content of sawdust is reduced to be about 15% evenly, and the water become vapor.
