大气污染控制工程(英文)

stoichiometric mixture.
0.0436 46% 0.095 0.1555 164 % 0.095
LEL UEL
Ⅶ combustion (3) Explosive or combustible limits
Two types expressions
y methane
= volume%
(2) Heat of combustion
In combustion , we will have removed a finite amount of energy in the form of heat , called the heat of combustion .
The higher heating value, water is condensed .
Fig. 7.4, Page 181
y methane, in the limit mixture y methane , in the stoichiometric mixture
Table 7.1, Page 179
Ⅶ combustion (3) Explosive or combustible limits
different particle with various sizes .
Ⅶ combustion
Most air pollutants are created and released in
processes involving combustion, transportation , fuel
Air Pollution Control Engineering
Prof. Jiakuan Yang
Huazhong University of Science and Technology

中国海洋大学本科生课程大纲课程属性：专业知识，课程性质：必修一、课程介绍1. 课程描述大气污染控制工程是环境工程专业的专业必修课和专业核心课。

通过本课程的学习，学生可以系统地了解并掌握大气污染控制的基本知识和理论，对大气污染防治的设备类型和典型工艺有初步认识，掌握分析和解决大气污染问题的基本能力；结合课程实验和课程设计等教学环节，为学生毕业后从事大气污染控制工程设计、技术管理等工作奠定必要的基础。

本课程内容主要包括：①基础知识：主要包括气象学基础、燃烧与污染物计算、流体阻力和沉降理论、吸收过程的气液平衡等基本概念和基本理论。

②除尘技术及设备：主要包括机械除尘技术、电除尘技术、湿式除尘技术和袋式除尘技术。

③气体污染物去除技术：主要包括SO2处理技术、NOx处理技术和VOCs处理技术。

Air pollution control engineering is a compulsory and core course for the students majored in environmental engineering. Through studying of this course, students can systematically master the basic knowledge and theory of the air pollution control, gain a preliminary understanding of equipment types and typical processes of air pollution control, and construct the basic ability to analyze and solve the air pollution problems. Together with the other courses such as experiment and course design, they may lay a solid foundation for the students to engage in the work related to air pollution control and technical management in future.The content of this course mainly includes: ①Basic knowledge: covering the basics of meteorology, calculation of combustion and air pollutants, fluid resistance and sedimentation theory, and gas-liquid balance of the absorption process, etc. ②Dust removal technology and- 9 -equipment: mainly including mechanical dust removal technology, electric dust removal technology, wet dust removal technology and bag dust removal technology.③Gas pollutant removal technology: mainly including SO2, NO x and VOCs treatment technology.2. 设计思路本课程围绕燃烧与大气污染物的生成以及污染物的治理技术这一主线，首先介绍燃烧过程和烟气量的理论计算，以及大气稳定度对污染物扩散的影响；接着介绍与除尘技术相关的流体力学和颗粒分级等基础理论，在此基础上，分章讲解机械除尘技术、电除尘技术、湿式除尘技术和袋式除尘技术的原理和主要设备；继而介绍吸收过程的气液平衡等基本概念和基本理论，以及SO2、NOx和VOCs等气体污染物处理技术；最后，与同学们共同讨论当前与大气污染相关的热点问题如全球变暖、雾霾、酸雨、沙尘暴等。

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2. Concept of Air Pollution
❖ Air Pollution is the ce of undesirable materials in air, in quantities large enough to produce harmful effects.The undesirable materials may damage human health,vegetation,hunman,property, or the global environment as well as create aesthetic insults in the form of brown or hazy air or unpleasant smells.
Source control
Atmosphere
Receptors Receptors
Legislative action
response
Humans Animals Plants Materials
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The research of air pollution
❖Sources of air pollution ❖Pollution control technology ❖Atmospheric behavior of air pollutants ❖Effects of air pollutants ❖Legislative and regulatory measures
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5. Primary Air Pollutants
❖ Pollutants released directly into the atmosphere in their unmodified forms and in sufficient quantities to pose a health risk

Pollution control technology
Atmospheric behavior of air pollutants
Effects of air pollutants Legislative and regulatory measures
4. Sources of Air Pollution
NO2（微量） 刺激眼睛 NO2 + UV → NO2 * NO* 2 → NO + O O + O 2 → O3 O3 + NO → NO2 + O2 O3 + HC → ↓ 醛类及其它氧化物 醛类
O3
复杂的有机化合物
紫外光 NO
汽车排气 HC NO2
太阳 紫外光
HC + O2 + NO2 + UV ↓ O3 + 甲醛 + PAN + 氧化产物 O3 伤害植物 PAN 伤害植物 刺激眼睛
Anthropogenic sources
Transportation Electric power generation Industrial processes Industrial and domestic fuel burning
Refuse burning
Etc.
全球变暖产生的影响
碳黑对大气环境的重要影响近年来才引起人们的关注
Linkages of Air Pollution to Climate Change
O3 (0.3+0.1)
Black (0.8) Carbon
(Hansen et al., PNAS, 2001)
政府间气候变化专门委员会（IPCC）得到的几个 重要结论：