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Suggest and look into possibilities of making straw briquettes for energy use.
SLÁDEK, Karel
This thesis addresses the problem of making straw briquettes. The aim is to examine the possibility of making straw briquettes directly on the field from lines arising after the passing of the combine harvester, which would save the operation of harvesting and storing straw and thus transport intensity. The basis of this work is finding straw production in the Czech Republic and its possible potential to produce briquettes. The Czech Republic is able to use for energy purposes, an average of 1.6 million t / y of straw cereals and 900 000 t / y of rape straw. Low specific density cut straw complicated transport to incinerators or to stationary lines to produce other forms of fuel. Pressing the straw bales specific density improves, but costs associated with transport are still relatively high. Because of low specific density, straw often stored in open stacks. Not all the straw, which is not used directly in agriculture, is used for combustion. There are also other industrial uses for straw, as Ecopanels (construction), paper, various ornaments and tools (for example: baskets). Most important for the production of briquettes is the moisture content of input material, which may not exceed 15%. The basis for obtaining briquettes directly in the field is appropriate combination of forage harvester and briquetting press, for example self-propelled briquetting press Biotruck 2000 is constructed from the Claas Jaguar. Forage harvester transports straw to the briquetting press, during transport is straw dried because of the heat from powerful engine. To briquetting is used several types of presses that are described in this thesis. The best quality briquettes are formed on the principle of screw press. The last two parts of the thesis are dealing with proposal the technological line for production of briquettes from straw directly on the field. There are described here used machines, their cost, performance and energy efficiency in those parts of the thesis. In the proposed procedure is a dry indoor storage of briquettes.
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