Basic Study on Treatment of Pollutant Hard-Treated Wastes by non-thermal plasma

低温等离子体处理污染物难处理废物的基础研究

• 批准号: 11555199
• 负责人: MATSUDA Hitoki
• 金额: $ 8.77万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2001
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-11555199/
• 关键词: high density thermal plasma; high frequency torch; non-thermal plasma; corona dischage; volataile organic compounds; alkali sorbent; 活性種; コロナリアクタ; 電界分布

In this research work, we applied the plasma technology for treatment of hard-treated wastes, which contain halogens and heavy metals, and investigate the decomposition behavior of wastes in plasma field was investigated. This research work reported the results obtained from the following experimental investigation, i) investigation of the possibility of plasma atmosphere controlling for completely decomposition and depression of pollutant by-product in the case of decomposition treatment of halogen compound gases by non-thermalplasma ii) investigation of the characteristics of high density plasma on the plasma technology for separating the involved metal compounds from wastesIn this research work about the technology for decomposition of halogen compound gases by non-thermal plasma, the influence of coexisting gas in plasma field on the decomposition of halogen compound gases like halon and freon. The experiments, simulated the treatment in the air atmosphere, indicated that the prese … More nce of O2 cause the decrease of decomposition rate and the emission of pollutant products, which contained O atom. It was confirmed the increase of decomposition rate of halogen compound gases in the case of addition of H2 for combining the free halogen atom. In order to stabilize the free halogen atom and produced acid gases, alkali sorbent was introduced in the plasma field directly. The sorbent settled in the reactor has the effect not only of the increase of decomposition rate but also depression of halogen by-products.The experiments were carried out to evaluate the ability of high frequency torch plasma in the system for the separating valuable metal compounds from solid wastes. The experimental results demonstrated that the plasma density (np) reached 2.6x1015cm-3, and the excitation temperature became 1.7eV. In this obtained plasma condition, severalmetaloxides can evaporate instantly and these compounds can be decomposed to atom or ion. As a next experimental step, it should be cleared the effect of coexisting solid material in the plasma field, because it has been known that the condition of plasma field become unstable owing to the presence of impurities in the field. Less

在这项研究工作中，我们应用等离子体技术处理含有卤素和重金属的硬处理废物，并研究了废物在等离子体场中的分解行为。本研究工作报告了以下实验研究所获得的结果，i）研究在非热等离子体分解处理卤素化合物气体的情况下等离子体气氛控制完全分解和抑制污染物副产物的可能性ii）研究高密度等离子体对从废物中分离所涉及的金属化合物的等离子体技术的特性。 低温等离子体对卤素化合物气体的研究，等离子体场共存气体对哈龙、氟利昂等卤素化合物气体分解的影响。模拟空气气氛中处理的实验表明，O2的存在导致分解速率下降，并导致含有O原子的污染物产物的排放。证实在添加H 2 来结合游离卤素原子的情况下，卤素化合物气体的分解速率增加。为了稳定游离卤素原子和产生的酸性气体，将碱吸附剂直接引入等离子体场。反应器中沉降的吸附剂不仅具有提高分解率的作用，而且还具有减少卤素副产物的作用。通过实验评价了系统中高频炬等离子体从固体废物中分离有价值金属化合物的能力。实验结果表明，等离子体密度(np)达到2.6x1015cm-3，激发温度为1.7eV。在这种获得的等离子体条件下，几种金属氧化物可以立即蒸发，并且这些化合物可以分解为原子或离子。作为下一个实验步骤，应该清除等离子体场中共存固体材料的影响，因为已知等离子体场的条件由于场中杂质的存在而变得不稳定。较少的

项目成果

Liwei Huane, Katsuhhiko Nakajyo, Takaaki Hari, Shoji Ozawa and Hitoki Matsuda: "Decomposition of Carbon Tetrachloride by a Pulsed Corona Reactor Incorporated with In Situ Absorption"Ind. Eng. Chem. Res.. Vol.40. 5481-5486 (2001)

Liwei Huane、Katsuhhiko Nakajyo、Takaaki Hari、Shoji Ozawa 和 Hitoki Matsuda：“脉冲电晕反应器结合原位吸收法分解四氯化碳”Ind。

Liwei Huang, Takaaki Hari, Katsuhhiko Nakajyo, Shoji Ozawa and Hitoki Matsuda: "Reduction of NO by CO in a Pulsed CoronaReactor Incorporated with CuO Catalyst"Journal of Chemical Engineering of Japan. Vol.34, No.8. 1012-1016 (2001)

Liwei Huang、Takaaki Hari、Katsuhhiko Nakajyo、Shoji Ozawa 和 Hitoki Matsuda：“Reduction of NO by CO in a Pulsed CoronaReactor Incorporated with CuO Catalyst”日本化学工程杂志。

L.Huang,K.Nakajyo,S.Ozawa and H.Matsuda,: "Decomposition of Dichloromethane in a Wire-in-Tube Pulsed Corona Reactor"Environmental Science and Technology. (掲載決定). (2001)

L.Huang、K.Nakajyo、S.Ozawa 和 H.Matsuda，“在线管脉冲电晕反应器中二氯甲烷的分解”环境科学与技术（2001 年出版）。

Liwei Huang, Takaaki Hari, Katsuhhiko Nakajyo, Shoji Ozawa, Hitoki Matsuda: "Reduction of NO by CO in a Pulsed Corona Reactor Incorporated with CuO Catalyst"Journal of Chemical Engineering of Japan. Vol.34, No.8. 1012-1016 (2001)

Liwei Huang、Takaaki Hari、Katsuhhiko Nakajyo、Shoji Ozawa、Hitoki Matsuda：“在采用 CuO 催化剂的脉冲电晕反应器中通过 CO 还原 NO”日本化学工程杂志。

L.Huang, K.Nakajo, S.Ozawa, H Matsuda: "Decomposition of Dichloromethane in Wire-in-Tube Pulsed Corona Reactor"Environmental Science & Technology. Vol.35, No.6. 1276-1281 (2001)

L.Huang、K.Nakajo、S.Ozawa、H Matsuda：“在线管脉冲电晕反应器中二氯甲烷的分解”环境科学