High-efficiency Dechlorination of Waste by Selective Injection of Microwave Energy into Chemical Bonding between Chlorine and Hydrocarbon

通过选择性地将微波能量注入氯和碳氢化合物之间的化学键来高效脱氯废物

• 批准号: 15206102
• 负责人: MORI Shigekatsu
• 金额: $ 26.37万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (A)
• 财政年份: 2003
• 资助国家: 日本
• 起止时间: 2003 至 2004
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-15206102/
• 关键词: Microwave; Prior Dechlorination; Chlorinated Organic Compound; Hydrogen Chloride; Dielectric Loss; Selectivity; Poly-vinyl Chloride; Electric Field Intensity; 有機塩素; PVC; 有機廃棄物; ガス化技術; 高効率化

In this research work, dechlorination of organochlorine compound in waste by using microwave was discussed, as selective excitation of organochlorine by microwave was prospective. Here, Polyvinyl chloride(PVC) was used as sample of organochlorine compound. To obtain its thermal decomposition property, thermogravimetric analysis was carried out. From the results of the analysis, it was found that the thermal decomposition reaction was two-step and the first step took place in the range 483-573 K. It is consider that the first step is mainly caused by dechlorination reaction.Difference between dechlorination properties of PVC with microwave irradiation and with conventional heating was investigated. Dechlorination ratio was measured under several constant temperatures hi the range 463-493 K. It was indicated that both reaction rate and ratio of dechlorination with microwave was greater than those with conventional heating in the range 463-483 K.For uniform microwave irradiation of PVC, fluidized bed reactor using glass beads which had microwave transparency was applied to test equipment. The effect of degree of polymerization, initial reactor temperature, irradiation intensity of microwave and gas velocity on dechlorination ratio and temperature profile of bed was investigated. When the initial reactor temperature was less than 334 K, dechlorination reaction was not confirmed. That is the reason why the dielectric loss of PVC at the lower temperature is too small to absorb microwave energy. On the contrary, rapid rise of temperature in bed and dechlorination reaction was observed over 450 K when initial temperature was more than 334 K. The smaller degree of polymerization of PVC was, the higher dechlorination ratio was observed at 600 W of microwave. However, the dechlorination ratio was independent of the degree of polymerization under condition of 800 W.

本论文主要研究了微波对有机氯的选择性激发，探讨了微波对有机氯的脱氯作用。在这里，聚氯乙烯（PVC）被用作有机氯化合物的样品。为了获得其热分解性能，进行了热重分析。分析结果表明，热分解反应为两步反应，第一步反应发生在483-573 K之间。研究了微波辐照与常规加热对PVC脱氯性能的影响。在463-493 K范围内，测定了几种恒温条件下的脱氯率.结果表明，在463-483 K温度范围内，微波加热的反应速率和脱氯率均高于常规加热。为了使微波均匀辐照PVC，实验装置采用了流化床反应器，反应器中加入了具有微波透明性的玻璃微珠。考察了聚合度、反应器初始温度、微波辐射强度和气速对脱氯率和床层温度分布的影响。当反应器初始温度低于334 K时，脱氯反应未得到证实。这就是为什么PVC在较低温度下的介电损耗太小而不能吸收微波能量的原因。当初始温度高于334 K时，床层温度在450 K以上迅速升高，脱氯反应开始进行。聚氯乙烯聚合度越小，微波辐射强度越大，脱氯率越高。而在800 W条件下，脱氯率与聚合度无关.

项目成果

Selective Dechlorination of Polyvinyl Chloride by Microwave Irradiation of PVC Fluidized Bed

PVC流化床微波辐射聚氯乙烯选择性脱氯

• 发表时间: 2004
• 期刊: Thermal Science & Engineering 12・4
• 作者: Jun KOBAYASHI;Motomi HORI;Akihiro HAMADA;Nobusuke KOBAYASHI;Shigenobu HATANO;Yoshinori ITAYA;Shigekatsu MORI
• 通讯作者: Shigekatsu MORI

廃材の処理方法及び廃材処理装置

废弃物处理方法及废弃物处理设备

• 发表时间: 2004

Selective Dechlorination of Polyvinyl Chloride by Microwave Irradiation

微波辐照聚氯乙烯选择性脱氯

• 发表时间: 2004
• 期刊: Proceedings for the 10th APCChE, Kitakyushu, Japan (CD ROM)
• 作者: Motomi Hori;Akihiro Hamada;Jun Kobayashi;Nobusuke Kobayashi;Yoshinori Itaya;Shigenobu Hatano;Shigekatsu Mori
• 通讯作者: Shigekatsu Mori

Selective Dechlorination of Polyvinyl Chloride Using Microwave

微波选择性脱氯聚氯乙烯

• 发表时间: 2004
• 期刊: Proceeding Paper of International Symposium on Microwave Science and Its Application to Related Fields, Takamatsu, Japan (CD ROM)
• 作者: Jun KOBAYASHI;Motomi HORI;Akihiro HAMADA;Nobusuke KOBAYASHI;Shigenobu HATANO;Yoshinori ITAYA;Shigekatsu MORI
• 通讯作者: Shigekatsu MORI