Synthesis of hydrogen peroxide using atomization of fine droplet into plasma

利用细液滴雾化成等离子体合成过氧化氢

• 批准号: 12558066
• 负责人: HARANO Azuchi
• 金额: $ 8.06万
• 依托单位: Gunma University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2000
• 资助国家: 日本
• 起止时间: 2000 至 2003
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-12558066/
• 关键词: Hydrogen peroxide; Plasma; Desulfurization; Denitration; Fine droplet; Reactive absorption; Electrostatic Atomization; Exhaust gas treatment; 吸収; ヒドロキシラジカル; 超音波振動子; ヒドロキシルラジカル

A fundamental study of SO_2 removal using the fine droplets containing hydrogen peroxide is presented. The aqueous fine droplets ranging from 100μm to 300μm were produced into Pyrex glass reactor by electrostatic spray consists of the grounded capillary with 100μm in inner diameter and the circular stainless net which is applied high voltage. Improvement of SO_2 removal efficiencies were observed via atomization of aqueous droplets of 200μm or less in diameter. Remarkable enhancements of SO_2 removal were observed by the addition of hydrogen peroxide which was promoted the SO_2 absorption into fine droplets following the oxidative reaction of sulfite ions in liquid phase. The high removal efficiencies about 80% were obtained at equivalent point of SO_2 and H_2O_2 within 0.03sec contact time of droplets with SO_2 gas through the amount of water consumed in this experiment is about one tenth of that of the conventional wet desulfurization processes. This process is expected to reduce the amount of water very much and as a consequence, the total working cost could be decrease comparing with that of the existing similar wet SO_2 removal processes. Simple numerical calculation of SO_2 absorption into droplet following oxidative reaction with H_2O_2 was performed for analysis of experimental results. Even though there are some minor differences between experimental results and calculation, a good agreement is approximately obtained.

介绍了利用含过氧化氢的微滴脱除SO_2的基础研究。采用静电喷雾的方法，在Pyrex玻璃反应器中产生100μm ~ 300μm的细水珠，该细水珠由内径100μm的接地毛细管和施加高压的圆形不锈钢网组成。通过雾化直径在200μm以下的水滴，可以提高SO_2的去除效率。过氧化氢的加入促进了亚硫酸盐离子在液相中的氧化反应，使SO_2吸附成细滴，显著提高了SO_2的脱除效果。液滴与SO_2气体接触时间为0.03秒，SO_2和H_2O_2当量点脱除效率高达80%，耗水量约为传统湿法脱硫法的十分之一。与现有的同类湿法脱硫工艺相比，该工艺有望大大减少用水量，从而降低总工作成本。对液滴与H_2O_2氧化反应后SO_2的吸附进行了简单的数值计算，并对实验结果进行了分析。虽然实验结果与计算结果有一些小的差异，但得到了较好的一致性。

项目成果

A.Harano, K.Shimada, T.Okubo, M.Sadakata: "Crystal Phases of TiO_2 Ultraflne Particles Prepared by Laser Ablation of Solid Rods"J. Nanoparticle Resarch. Vol.4・Issue 3. 215-219 (2002)

A.Harano、K.Shimada、T.Okubo、M.Sadakata：“激光烧蚀固体棒制备的 TiO_2 超细颗粒的晶相”J. Vol.4·Issue 3. 215-219 (2002)。

原野安土,定方正毅(分担): "あなたの実用燃焼炉設計および制御"テクノシステム. 30 (2001)

Azuchi Harano、Masatake Sadakata（撰稿人）：“实用燃烧炉的设计和控制”Techno System 30 (2001)。

原野 安土: "静電微粒化技術の排煙ガス処理法への応用"ペテロテック. 27. (2004)

Azuchi Harano：“静电雾化技术在烟气处理方法中的应用”Peterotek 27。（2004）

原野安土, 宝田恭之, 定方正毅: "静電微粒化法を用いた新しい環境浄化技術の開発"エアロゾル研究. Vol.17・No.1. 23-28 (2002)

原野安土、宝田康之、贞方正武：“利用静电雾化法的新型环境净化技术的开发”Aerosol Research Vol.17・No.1（2002）。

S.Noda,A.Harano,M.Hashimoto and M.Sadakata: "Development of Selective Noncatalytic Reduction by Ammonia in the Presence of Phenol"Combustion and Flame. Vol.122,No.4. 439-450 (2000)

S.Noda、A.Harano、M.Hashimoto 和 M.Sadakata：“苯酚存在下氨选择性非催化还原的发展”燃烧和火焰。