本文選題：寬截面輥道窯 + 弧形窯頂　； 參考：《景德鎮(zhèn)陶瓷學(xué)院》2015年碩士論文

【摘要】：輥道窯出現(xiàn)于二十世紀(jì)二十年代,到目前為止已經(jīng)經(jīng)歷了近百個(gè)年頭,多年來(lái)陶瓷輥道窯的能耗問(wèn)題一直都是研究者最關(guān)心的問(wèn)題,能源消耗也是全球共同關(guān)注的話題,所以采取有效的辦法來(lái)盡量的降低其能耗是對(duì)陶瓷輥道窯優(yōu)化的首要任務(wù)。本課題研究是以降低能耗為主線,通過(guò)改變輥道窯傳統(tǒng)結(jié)構(gòu)模式,提出一種新型輥道窯結(jié)構(gòu)模型,這種新型輥道窯模型的主要特點(diǎn)是窯頂窯底都為弧形,即拱頂拱底的結(jié)構(gòu),整個(gè)窯體是個(gè)形似雞蛋的形狀,文中稱(chēng)之為蛋形輥道窯。使用對(duì)比分析的方法,探究這種新型模型在燒成帶窯內(nèi)的溫度場(chǎng)和氣體流場(chǎng)的分布。對(duì)比對(duì)象是通過(guò)建立兩種傳統(tǒng)模型,一種是弧頂平底結(jié)構(gòu),一種平頂平底結(jié)構(gòu),同時(shí)分析這兩種傳統(tǒng)模型燒成帶窯內(nèi)的溫度場(chǎng)和氣體流場(chǎng),與課題提出的蛋形窯體內(nèi)部的溫度場(chǎng)和氣體流場(chǎng)的分布對(duì)比分析,得出課題提出的模型的可行性和優(yōu)越性本文應(yīng)用fluent軟件,在同等初始邊界條件的前提下,對(duì)提出的蛋形輥道窯結(jié)構(gòu)和兩種傳統(tǒng)輥道窯結(jié)構(gòu)的燒成帶內(nèi)部的流場(chǎng)進(jìn)行了數(shù)值模擬,模擬結(jié)果通過(guò)Tecplot后處理軟件處理出三種溫度場(chǎng)和速度場(chǎng)的分布云圖,進(jìn)而對(duì)其對(duì)比分析。分析結(jié)果表明：本課題提出的蛋形輥道窯結(jié)構(gòu)可以比傳統(tǒng)輥道窯型更好的解決寬體輥道窯內(nèi)窯爐溫差難控制的困擾問(wèn)題,此新型窯型可以將窯內(nèi)的溫差控制在±5℃以?xún)?nèi),更大程度的確保了陶瓷制品的燒成質(zhì)量。而且此窯型能夠更好的保證窯內(nèi)熱量散失,以至可以減少助燃風(fēng)的風(fēng)量,高效的降低了燒制所消耗的能量；弧頂弧底同時(shí)也增加窯爐內(nèi)腔的體積,可以滿足當(dāng)今工業(yè)上的大產(chǎn)量、寬截面窯爐的應(yīng)用要求,蛋形結(jié)構(gòu)可以加強(qiáng)窯內(nèi)氣流流動(dòng),降低對(duì)抽煙風(fēng)機(jī)的抽力要求,節(jié)省了電能。
[Abstract]:Roller kiln appeared in the 1920s, and has experienced nearly 100 years so far. For many years, the energy consumption of ceramic roller kiln has always been the most concerned issue for researchers, and energy consumption is also a topic of global common concern. Therefore, the most important task to optimize the ceramic roller kiln is to adopt effective methods to reduce its energy consumption as far as possible. This research is to reduce energy consumption as the main line, by changing the traditional structure model of roller kiln, a new type of roller kiln structure model is put forward. The main characteristic of this new type of roller kiln model is that the bottom of kiln top and kiln is arc, that is, the structure of arch bottom. The whole kiln is an egg-like shape, called egg-shaped roller kiln. The distribution of the temperature field and gas flow field in the firing zone kiln was investigated by using the method of comparative analysis. The object of comparison is to establish two traditional models, one is arc-top flat-bottom structure, the other is flat-top flat-bottomed structure. At the same time, the temperature field and gas flow field in the kiln are analyzed. By comparing and analyzing the distribution of temperature field and gas flow field in the egg-shaped kiln, the feasibility and superiority of the model are obtained. In this paper, using fluent software, under the same initial boundary condition, the feasibility and superiority of the model are obtained. The flow field inside the firing zone of the egg roller kiln and the two traditional roller kiln structures is numerically simulated. The distribution cloud diagrams of the three temperature and velocity fields are processed by Tecplot post-processing software, and then the distribution of the temperature field and velocity field is compared and analyzed. The analysis results show that the structure of the egg-shaped roller kiln proposed in this paper can better solve the problem that the temperature difference of the wide body roller kiln is difficult to control than the traditional one. The new type of kiln can control the temperature difference in the kiln within 鹵5 鈩，

本文編號(hào)：1931090