【摘要】：目前,由燃料的燃燒導(dǎo)致的大氣污染情況日益嚴(yán)重,人們對于治理大氣污染日趨重視。節(jié)能低碳環(huán)保成為當(dāng)今社會的重要話題。本課題以實驗為基礎(chǔ),基于V型催化燃燒器,設(shè)計了采用催化燃燒方式的新型天然氣催化燃燒爐窯,對其進行了一系列研究,并探討了天然氣催化燃燒爐窯煙氣的應(yīng)用。具體研究內(nèi)容如下:首先研究了天然氣催化燃燒爐窯的輻射特性。在對V型催化燃燒器表面的溫度場及天然氣催化燃燒爐窯內(nèi)部溫度場測量的基礎(chǔ)上,了解V型催化燃燒器在大空間及催化燃燒爐窯內(nèi)部的輻射換熱情況,并通過計算輻射換熱及輻射所占比例進行分析比較。研究表明:在輸入功率為4KW~10KW的范圍內(nèi),V型催化燃燒器在大空間的輻射效率在20%~40%范圍內(nèi)。爐膛內(nèi)部垂直方向溫度變化不大,分布比較均勻。計算得到天然氣催化燃燒爐窯內(nèi)部的輻射換熱量為2.097KW,爐窯內(nèi)部輻射換熱量占比與催化燃燒器表面的輻射效率相比較高,說明催化燃燒爐窯具有較高的輻射強度。然后將天然氣催化燃燒爐窯應(yīng)用于燒制釉陶與琉璃瓦。主要結(jié)合爐窯自身的特性研究了施釉后釉陶的一次燒制過程與琉璃瓦的二次燒制工藝。通過合理調(diào)節(jié)爐窯輸入功率等方式實現(xiàn)對爐內(nèi)溫度的控制。分析出燒制釉陶時爐內(nèi)溫度的控制及污染物的排放規(guī)律。經(jīng)過多次實驗對比分析燒成制度與爐窯氣氛對燒成琉璃瓦質(zhì)量的影響。總結(jié)得到:分三個階段控制爐窯的增溫速率,燒成溫度達900℃,且保證爐內(nèi)為強氧化氣氛,燒成的琉璃瓦呈色好、透亮。約兩個小時后催化燃燒煙氣中的CO、NO、CH4等污染物接近零排放。基于催化燃燒爐窯,初步探索了含有高濃度CO2的催化燃燒煙氣對鵝掌柴植株的影響。主要通過將鵝掌柴植株分別置于封閉式溫室及普通環(huán)境中的對比實驗,觀察鵝掌柴植株對催化燃燒煙氣的響應(yīng)。經(jīng)過三個月的短期多次實驗后,發(fā)現(xiàn)催化燃燒煙氣對鵝掌柴植株的高度、形狀、葉片等方面產(chǎn)生了影響,可促進植株的生長。最后討論在工業(yè)建筑中,將潔凈的爐窯煙氣用于建筑垂直綠化中綠色植物的光合作用。對于促進碳匯、減少碳排放提高了一種思路。隨著國家低碳環(huán)保的大力倡導(dǎo),相信在未來工業(yè)爐窯的發(fā)展中,天然氣催化燃燒爐窯以其環(huán)保、高效的特性,定會貢獻自己的一份力量。
[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，

本文編號：2210358