一体化等离子体活化水装置设计及性能研究毕业论文
2022-01-09 06:01
论文总字数：31463字
摘 要
等离子体活化水是指等离子体中活性氧和氮溶解在水中，形成的具有广谱生物活性产物。等离子体活化水具有环境成本低、效率高的特点，近年来广泛应用于医学、农业、食品工业等领域，在杀菌消毒、处理伤口、农作物培育等方面的应用日趋成熟。本文通过查阅文献，综合分析了等离子体活化水装置的效率、体积和其所生成的等离子体活化水的理化特性、实际应用等问题。通过改造等离子体活化水装置的各项参数，初步设计出了一种效率更高、更易携带的等离子体活化水装置。研究并分析了该装置的放电特性和产生的活性粒子的浓度。研究发现，当脉冲电压小于10kV时，在一个放电周期内，只存在着一次主要的放电，发生在电压上升沿期间。当电压大于11kV时，上升沿处的电流有所减小，但持续时间增加，此时放电模式与电压10kV时的有所不同。实验发现，当放电电压低于11kV时，由于放电模式还处于丝状放电，此时，发射光谱由N2(C-B)组成，且变化缓慢，幅度不大。而当放电电压大于等于11kV时，放电模式变成了弧光放电，粒子的种类大大增加，且变化的幅度也大大增强，其中Hα、Hβ的变化尤其明显，O(777nm)和N(746nm)次之，而此时N2(C-B)的变化仍然缓慢，无大幅的变动。实验还发现，当放电模式发生变化时，过氧化氢、亚硝酸盐的浓度呈现出一种明显的升高，也表明弧光放电模式下，过氧化氢和亚硝酸盐的浓度要远大于丝状放电模式。
关键词：等离子体活化水 气液放电 光学特性 活性粒子浓度
Research on Design and Performance of Integrated Plasma Activated Water Device
Abstract
Plasma activated water means that active oxygen and nitrogen in the plasma are dissolved in water to form a broad-spectrum biologically active product. Plasma activated water has the characteristics of low environmental cost and high efficiency. In recent years, it has been widely used in medicine, agriculture, food industry and other fields, and its application in sterilization and disinfection, wound treatment, crop cultivation and other aspects is becoming more and more mature. By referring to the literature, this paper comprehensively analyzes the efficiency and volume of the plasma activated water device and the physical and chemical characteristics and practical application of the plasma activated water generated by it. By modifying the parameters of the plasma-activated water device, a plasma-activated water device with higher efficiency and more portability was preliminarily designed. The discharge characteristics of the device and the concentration of active particles produced were studied and analyzed. The study found that when the pulse voltage is less than 10kV, there is only one main discharge in a discharge cycle, which occurs during the rising edge of the voltage. When the voltage is greater than 11kV, the current at the rising edge decreases, but the duration increases, and the discharge mode is different from that at 10kV.The study found that When the discharge voltage is lower than 11kV, because the discharge mode is still in a filament discharge, at this time, the emission spectrum is composed of N2 (C-B), and the change is slow, and the amplitude is not large. When the discharge voltage is greater than or equal to 11 kV, the discharge mode becomes an arc discharge, the types of particles are greatly increased, and the magnitude of the change is also greatly enhanced. Among them, the changes of Hα and Hβ are particularly obvious, O (777nm) and N (746nm) However, at this time, the change of N2 (C-B) is still slow, without large changes. The experiment also found that when the discharge mode changed, the concentration of hydrogen peroxide and nitrite showed a cliff-like increase, which also showed that in the arc discharge mode, the concentration of hydrogen peroxide and nitrite was much greater than the filament Discharge mode.
Key words: Plasma activated water Gas-liquid discharge Optical characteristics Active particle concentration
目录
摘要 I
Abstract II
第一章 绪论 1
1.1 引言 1
1.2 活化水的传统制备方法 1
1.3 等离子体活化水概述 2
1.3.1 等离子体活化水的理化特性 2
1.3.2 等离子体活化水的应用 3
1.4 等离子体活化水的产生装置现状 4
1.4.1 放电类型 4
1.4.2 放电方式 5
1.4.3 研究现状 6
1.4.4 现有装置存在的不足 9
1.5 课题主要研究内容 9
1.5.1 课题研究和解决的问题 9
1.5.2 等离子体活化水装置部分的实现 10
1.5.3 拟采用的方案 10
第二章 实验装置的设计与比较 11
2.1 装置设计的要求 11
2.2 一种活化水装置 11
2.3 一种一体化针电极等离子体活化水装置 11
2.3.1活化水装置的电路设计 12
2.3.2 电源设计 12
2.3.3 反应器设计 16
2.2.4 外壳设计 17
2.4 方案的选择 18
第三章 实验装置和实验方法 19
3.1 一体化等离子体活化水实验装置 19
3.1.1 电学探测系统 19
3.1.2 光学探测系统 20
3.2 实验方法 21
3.2.1 电气特性诊断 21
3.2.2 发光图像诊断 21
3.2.3 光谱特性诊断 21
3.2.4 液相活性粒子浓度测量 22
第四章 一体化等离子体活化水装置放电特性研究 23
4.1 一体化等离子体活化水装置的电学特性分析 23
4.1.1 电压幅值变化对放电特性的影响 23
4.2 一体化等离子体活化水装置的光学特性分析 26
4.2.1 不同电压下的放电发光图像 26
4.2.2 脉冲电压对光谱特性的影响 27
4.3 本章小结 30
第五章 活化水特性研究 31
5.1 活性粒子的检测方法 31
5.1.1 活化水中过氧化氢浓度的测量（钛盐光度法） 31
5.1.2 活化水中亚硝酸盐-氮浓度的测量（N-(1-奈基)-乙二胺光度法） 32
5.2 活化水中活性粒子特性 33
5.3 本章小结 34
第六章 结论与展望 35
6.1 总结 35
6.2 展望 35
参考文献 36
致谢 39
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