| 废水污泥快速热分解试验研究 |
| 摘要点击 714 全文点击 1205 |
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| 中文关键词 活性污泥 快速热分解 焦油 污水 |
| 英文关键词 activated sludge thermal flash pyrolysis tar |
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| 中文摘要 |
| 本文采用落下床快速效解工艺处理废水污泥,实现污泥的无害化及资源化,实验温度550—850℃,处理量约600g/h.污泥进行快速热解及通空气部分燃烧热解可得民用或工业用煤气、轻油、焦油及可直接做锅炉燃料的半焦.低温下隔绝空气热解的煤气中含较多的小分子烃类物质,可回收做化工原料.所得焦油含贵重化合物,高温下产品含量集中,可分离利用.通部分空气热解时可提供部分内热,以提高热效率,同时简化加工流程. |
| 英文摘要 |
| In this paper, a fresh attempt has been made in exploring thermal decomposition of activated sludge so as to make it harmless and be resources by using flash pyrolosis process. The dried surplus sludge taken from Tianji.i Sewage Plant was pyrolyzed in a heat radiating furnace and kept in a below reactor for 10 min with air being cut off. In order to provide the needed heat to sustain high temperature, a series of partial combustion pyrolysis tests were carried out in the same experiments using the same feedstock. The temperature range was 550℃ to 850℃. The products obtained were combustible gas (for industrial or civil use), light oil, tar and char. According to the results of the experiments, three process designs are proposed. |
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