Basic study on recovery energy and gasification with effective utilization of waste coal and biomasses

近年来，随着我国经济的快速发展，能源需求也在不断增长。为了应对这一趋势，中国提出了增加煤炭和天然气生产以及石油进口。随着化石燃料的大量消耗，CO_2（二氧化碳，一种温室气体）的大量排放是一个严重的问题。此外，在煤炭开采和洗选时被丢弃的废煤，由于具有高灰分、高硫分和低热值，由于稀缺性、占用大面积土地以及自燃造成的空气污染和水污染而被丢弃，因此需要一种合适的废煤处理和有效利用技术。因此，我国已开始重视废煤的高效利用和能源回收作为一种新能源。本研究的目的和目标是有效利用废煤。以煤矸石-生物质复合燃料为固体燃料，进行了煤矸石-生物质复合燃料的基础研究， ...更多信息 气化技术。结果表明，废弃煤-生物质燃料的抗压强度超过国内运输标准，热值超过国内民用标准，燃烧品质好，硫氧化物减少。此外，这意味着，作为固体燃料的废弃物煤-生物质燃料的推广是可能的，因为废弃物煤-生物质燃料的成本低于常规煤-生物质燃料。作为对垃圾煤-生物质气化技术的基础性研究，提出了气化反应性渐进、硫化氢固定、气体燃料热值比原始垃圾煤气化提高的观点。我们认为这些影响来自于生物质的加入可能导致碳含量和高比表面积的增加以及生物质中含有的催化金属如K，Na和Ca以及作为固硫剂的氢氧化钙。另外，在制备生物质燃料时，适当提高成型压力有利于提高气化反应活性。这些基础研究表明，利用气化技术将废弃煤-生物质燃料转化为清洁气体燃料是可行的。这些研究结果表明，废煤-生物质燃料作为固体燃料或气体燃料的能源具有应用的可能性，为废煤能源的回收和有效利用技术的发展提供了可能。少

Recently, energy demanded has increased with significantly development of economy in China. Respond to this tendency, China has proposed increment of coal and natural gas production and oil import. The high emission of CO_2 (carbon dioxide, a greenhouse gas) with increasing consumption of a large amount of fossil fuels is critical issue. Moreover, waste coal which is discarded coal when coal extraction and cleaning, because of having high-ash content, high-sulfur content and low-calorific value is discarded since the scarce availability, occupancy of vast area of land and air pollution by autogenous ignition and water pollution, an appropriate treatment and effective utilizing technology of waste coal is required. Therefore, China has paid the attention to efficient use of waste coal and energy recovery as a new energy. The purposes and objectives of this study are the efficient use of waste coal. We made waste coal-biomass briquette as solid fuel and conducted basic research on the co … More mbustion test and gasification technology. As the result, it was suggested that waste coal-biomass briquette had compression strength exceeding standard of internal transport in China, calorific value exceeding civilian use in China, good burning quality and reduction of sulfur oxide. In addition, it was implied that dissemination of waste coal-biomass briquette as a solid fuel was possible because the lower cost of waste coal-biomass briquette than the routine coal-biomass briquette. And as basic research about gasification technology of waste coal-biomass briquette, it was suggested that reactivity of gasification was progressive, hydrogen sulfide was fixed, and calorific value of gas fuel produced was increased in comparison with gasification of its original waste coal. We thought that these effects came from addition of biomass which may cause the increment of carbon content and high surface area and catalytic metals such as K, Na and Ca contained in biomass and calcium hydroxide which is as a sulfur-fixation agent. In addition, it was found that the reactivity of gasification was improved by the suitable increasing briquetting pressure when waste coal-biomass briquette was prepared. These basic researches implied that possibility of converting waste coal-biomass briquette to clean gas fuel by gasification. These study results indicate the possibility of the application of waste coal-biomass briquette as an energy resource of the solid fuel or the gas fuel, and may lead to the recovery energy and effective utilization technology of waste coal. Less