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

废煤及生物质有效利用回收能源及气化基础研究

基本信息

批准号：
15404004
负责人：
WANG Qingyue
金额：
$ 8.45万
依托单位：
Saitama University
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2003
资助国家：
日本
起止时间：
2003 至 2005
项目状态：
已结题

项目摘要

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

近年来，随着中国经济的显着发展，能源需求不断增加，为此，中国提出增加煤炭和天然气生产以及石油进口，以提高CO_2（二氧化碳，一种温室气体）的消耗量。此外，大量的化石燃料是煤炭开采和洗选时废弃的废煤，由于其灰分含量高、硫含量高、发热量低，由于资源稀缺、占用率低而被丢弃。广阔的由于自燃造成的土地和空气污染以及水污染，需要对废煤进行适当的处理和有效利用技术，因此，我国已经开始重视废煤的高效利用和能源回收作为新能源。本研究的目的和目标是废煤的高效利用，将废煤制成固体燃料，并进行燃烧试验和气化技术的基础研究。生物质成型燃料经过压缩强度超过国内运输标准，热值超过国内民用，燃烧质量好，硫氧化物减少，而且成本较低，暗示废煤生物质成型燃料作为固体燃料的推广是可能的。废煤生物质成型煤与常规生物质成型煤相比，作为废煤生物质成型煤气化技术的基础研究，提出了气化反应活性。进步，硫化氢被固定，并且与原始废煤气化相比，产生的气体燃料的热值增加了，我们认为这些效果来自生物质的添加，这可能导致碳含量和高表面积和催化作用的增加。此外，还发现，通过适当增加压块，可以提高气化反应性。这些基础研究表明，通过气化将废煤生物质成型为清洁气体燃料的可能性。这些研究结果表明了废煤生物质成型作为能源的可能性。固体燃料或气体燃料，可能导致废煤的回收能源和有效利用技术较少。