天然气催化燃烧炉窑辐射特性及其烟气应用研究
发布时间：2018-08-28 19:18
【摘要】：目前,由燃料的燃烧导致的大气污染情况日益严重,人们对于治理大气污染日趋重视。节能低碳环保成为当今社会的重要话题。本课题以实验为基础,基于V型催化燃烧器,设计了采用催化燃烧方式的新型天然气催化燃烧炉窑,对其进行了一系列研究,并探讨了天然气催化燃烧炉窑烟气的应用。具体研究内容如下:首先研究了天然气催化燃烧炉窑的辐射特性。在对V型催化燃烧器表面的温度场及天然气催化燃烧炉窑内部温度场测量的基础上,了解V型催化燃烧器在大空间及催化燃烧炉窑内部的辐射换热情况,并通过计算辐射换热及辐射所占比例进行分析比较。研究表明:在输入功率为4KW~10KW的范围内,V型催化燃烧器在大空间的辐射效率在20%~40%范围内。炉膛内部垂直方向温度变化不大,分布比较均匀。计算得到天然气催化燃烧炉窑内部的辐射换热量为2.097KW,炉窑内部辐射换热量占比与催化燃烧器表面的辐射效率相比较高,说明催化燃烧炉窑具有较高的辐射强度。然后将天然气催化燃烧炉窑应用于烧制釉陶与琉璃瓦。主要结合炉窑自身的特性研究了施釉后釉陶的一次烧制过程与琉璃瓦的二次烧制工艺。通过合理调节炉窑输入功率等方式实现对炉内温度的控制。分析出烧制釉陶时炉内温度的控制及污染物的排放规律。经过多次实验对比分析烧成制度与炉窑气氛对烧成琉璃瓦质量的影响。总结得到:分三个阶段控制炉窑的增温速率,烧成温度达900℃,且保证炉内为强氧化气氛,烧成的琉璃瓦呈色好、透亮。约两个小时后催化燃烧烟气中的CO、NO、CH4等污染物接近零排放。基于催化燃烧炉窑,初步探索了含有高浓度CO2的催化燃烧烟气对鹅掌柴植株的影响。主要通过将鹅掌柴植株分别置于封闭式温室及普通环境中的对比实验,观察鹅掌柴植株对催化燃烧烟气的响应。经过三个月的短期多次实验后,发现催化燃烧烟气对鹅掌柴植株的高度、形状、叶片等方面产生了影响,可促进植株的生长。最后讨论在工业建筑中,将洁净的炉窑烟气用于建筑垂直绿化中绿色植物的光合作用。对于促进碳汇、减少碳排放提高了一种思路。随着国家低碳环保的大力倡导,相信在未来工业炉窑的发展中,天然气催化燃烧炉窑以其环保、高效的特性,定会贡献自己的一份力量。
[Abstract]:At present, the air pollution caused by the burning of fuel is becoming more and more serious, and people pay more and more attention to the control of air pollution. Energy-saving and low-carbon environmental protection has become an important topic in today's society. Based on the experiments and V type catalytic burners, a new type of catalytic combustion furnace for natural gas is designed. A series of researches are carried out on it, and the application of flue gas in the furnace is also discussed. The main contents are as follows: firstly, the radiation characteristics of natural gas catalytic combustion furnace are studied. Based on the measurement of temperature field on the surface of V-type catalytic burner and the internal temperature field of natural gas catalytic combustion furnace, the radiation heat transfer of V-type catalytic burner in large space and inside catalytic combustion kiln is understood. The heat transfer and the proportion of radiation are calculated and compared. The results show that the radiation efficiency of V-type catalytic burner in large space is in the range of 20% and 40% when the input power is 4KW~10KW. The temperature in the vertical direction of the furnace has little change and the distribution is more uniform. The calculation results show that the internal radiation heat transfer of the catalytic combustion furnace is 2.097kW, and the ratio of radiation heat transfer inside the kiln is higher than that of the surface of the catalytic burner, which indicates that the catalytic combustion furnace has a higher radiation intensity. Then the natural gas catalytic combustion furnace was used to make glazed pottery and glazed tile. The primary firing process of glazed pottery after glazing and the secondary firing process of glazed tile were studied in combination with the characteristics of furnace kiln. The temperature in furnace can be controlled by adjusting the input power of furnace. The control of furnace temperature and the discharge rule of pollutants are analyzed. The influence of firing system and kiln atmosphere on the quality of fired glazed tile was analyzed by many experiments. It is concluded that the heating rate of furnace is controlled in three stages, the firing temperature reaches 900 鈩，
本文编号：2210358
[Abstract]:At present, the air pollution caused by the burning of fuel is becoming more and more serious, and people pay more and more attention to the control of air pollution. Energy-saving and low-carbon environmental protection has become an important topic in today's society. Based on the experiments and V type catalytic burners, a new type of catalytic combustion furnace for natural gas is designed. A series of researches are carried out on it, and the application of flue gas in the furnace is also discussed. The main contents are as follows: firstly, the radiation characteristics of natural gas catalytic combustion furnace are studied. Based on the measurement of temperature field on the surface of V-type catalytic burner and the internal temperature field of natural gas catalytic combustion furnace, the radiation heat transfer of V-type catalytic burner in large space and inside catalytic combustion kiln is understood. The heat transfer and the proportion of radiation are calculated and compared. The results show that the radiation efficiency of V-type catalytic burner in large space is in the range of 20% and 40% when the input power is 4KW~10KW. The temperature in the vertical direction of the furnace has little change and the distribution is more uniform. The calculation results show that the internal radiation heat transfer of the catalytic combustion furnace is 2.097kW, and the ratio of radiation heat transfer inside the kiln is higher than that of the surface of the catalytic burner, which indicates that the catalytic combustion furnace has a higher radiation intensity. Then the natural gas catalytic combustion furnace was used to make glazed pottery and glazed tile. The primary firing process of glazed pottery after glazing and the secondary firing process of glazed tile were studied in combination with the characteristics of furnace kiln. The temperature in furnace can be controlled by adjusting the input power of furnace. The control of furnace temperature and the discharge rule of pollutants are analyzed. The influence of firing system and kiln atmosphere on the quality of fired glazed tile was analyzed by many experiments. It is concluded that the heating rate of furnace is controlled in three stages, the firing temperature reaches 900 鈩，
本文编号：2210358
本文链接：https://www.wllwen.com/shengtaihuanjingbaohulunwen/2210358.html
