亚临界水技术处理厨余垃圾生成有机酸的实验研究
文献类型：学位论文
| ; | |
| 作者 | 李渊 |
| 学位类别 | 硕士 |
| 答辩日期 | 2008-06-06 |
| 授予单位 | 中国科学院广州能源研究所 |
| 授予地点 | 广州能源研究所 |
| 导师 | 李海滨 |
| 关键词 | 亚临界水 湿式氧化 厨余垃圾 有机酸 |
| 其他题名 | Experiment on sub-critical water disposal of kitchen waste |
| 中文摘要 | According to statistics, the total amount of municipal solid waste in China has reached about 180 million tons in 2005, and is still increasing at the rate between 8% to 10%. Kitchen waste is expanding at even more staggering speed, which has put its utilization in significant place. In this paper, the technology of sub-critical water was applied to the disposal of the kitchen waste based on sub-critical water’s small density, viscosity and orgnic solvent features.The organic component of the kitchen waste mainly consists of cellulose, starch and highly fatty acid, which can be converted into small molecules(acetic acid, formic acid) employing wet oxidation technology. Initially, rice and fecula were used as model compound. In the absence of oxidation, the main yields were 5-hydroxymethyl-2-furaldehyde,2-furaldehyde,lactic acid after the sub-critical water oxidation. When oxidation was applied, comparison was made between kitchen waste representatives (rice and cabbage) and real kitchen waste to study the rule of acid and acetic acid yield. The results indicated that: reaction time, reaction temperature and the amount of the oxygen in the sub-critical water play important roles in wet oxidation. Within the range of 0~2.5min, acid acid yield, acetic acid yield and carbon conversion increases with reaction time intially followed by a drop as reaction time further increases. This trend was also observed when the temperature was between 0~330℃ and amount of oxygen was between 0~150% respectively. Optimal parameter was determined considering various factors: for rice, the optimal reaction time is 1~1.5min; oxygen amount, 70%~100%; temperature, 280℃; for cabbage, it’s 2~2.5min，70%~100% and 280℃~300℃ respectively; For kitchen waste, it’s 1~2min，70%~100% and 300℃ respectively. Under these condition, carbon conversion rate for real kitchen waste is 30%. It’s concluded from comparison that starch. yields less organic acid than starch and its carbon conversion rate is lower than that of cellulose. |
| 语种 | 中文 |
| 公开日期 | 2011-07-14 ; 2011-07-15 |
| 页码 | 57 |
| 源URL | [http://ir.giec.ac.cn/handle/344007/5810]  |
| 专题 | 中国科学院广州能源研究所 |
| 推荐引用方式 GB/T 7714 | 李渊. 亚临界水技术处理厨余垃圾生成有机酸的实验研究, Experiment on sub-critical water disposal of kitchen waste[D]. 广州能源研究所. 中国科学院广州能源研究所. 2008. |
入库方式： OAI收割
来源：广州能源研究所
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