Study On Logistics And Technical Specifications Of Straw Collection Storage And Transportation In Biomass Power Plants

There are no unified straw logistics industry technical specifications in domestic biomass power generation. Investigation was conducted about straw collection, storage and transportation in multiple domestic biomass power plants. Relevant experimental research was carried out. Logistic cost of straw collection, storage and transportation was analyzed. The study of straw collection, storage and transportation contributed to the domestic logistics technical specifications.Research and study as follows:1, In order to in-depth understanding of the actual conditions of straw collection, storage and transportation, investigation was conducted in research inthe paper Zhoukou City in Henan, Xingtai City in Hebei, Huai’an City, Jiangsu, Nantong City in Jiangsu. A lot of actual data was gotten and provided a solid foundation for the follow-up experimental research and economic cost analysis.2, To determine some parameters of straw collection, storage and transportation in logistics specification, these study tests were conducted as following:(1) Through the tensile test of rope, it was measured that the new material rope can withstand the biggest force of2004.8N ahd the old material rope can withstand the biggest force of1048.7N. Therefore, the new material rope was more suitable for large straw bales. Four new material ropes should be uniformly placed in one straw bale. The old material rope was more suitable for small straw bales. Two old material ropes should be uniformly placed in one straw bale. If the old material rope was used in large straw bales, six ropes should be placed in one large straw bale for security.(2) Through the handling test, dropping test, stacking layers test, the following results were obtained:To reduce the damage to the straw bales, the number of handling straw bales should be controlled in less than7times as much as possible. If the new material ropes were placed in straw bales, straw bales can basically withstand three or four natural fall and remained relatively intact. If the old material ropes were used, straw bales were likely to collapse. Stacking layers should be less than six layers, five was for the best. During the straw harvest, by changing stacking method, the stacking layers could be increased. The numble of straw bales in6or7layer should be smaller than that of the lower of layers.(3) Through periodic test of rice straw, corn stalks, cotton stalks, wheat straw, the following results were obtained:①When the rice straw moisture content≤25%, there was little change in heat value of17000J/g.②When the moisture content of corn stalks≤22.77%, there was little change in heat value of18000J/g.③When the moisture content of cotton stalks<20%, the heat value was from18000J/g close to19000J/g.④The initial moisture content of wheat straw was rather low, about15%, and heat value was about19000J/g.(4) Through the logistics economic analysis of straw collection, storage and transportation and, the cost of unit heat value of cotton straw was minimum, the four units of heat cost of straw, that of corn stalks in second place, closely followed by wheat straw, rice straw were relatively high.Through field research, experimental research, economic analysis of the straw collection, storage and transportation of biomass power plants, the processes were collected. belongs to the straw collection storage and transportation of to The proper storage moisture content, heat value, handling times, other technical strength parameters of four straws were determined. The cotton stalks logistics technical specifications were written, which provided a reference for the domestic biomass industry to develop appropriate system bundle-type straw and bulk straw uniform material specifications. The application of two different ropes was analyzed. The proper storage moisture content, heat value, handling times, handling strength, stacking layers and other technical parameters were determined. The logistics technical specifications of the rice straw, corn stalks, wheat straw, cotton straw were written to provide a reference for the domestic biomass industry to develop appropriate uniform material specifications of baled straw and bulk strawbulk.