陶瓷辊道窑炉生物质燃烧系统节能研究

为了解决陶瓷辊道窑炉燃烧系统采用天然气作为燃料运行成本高、余热利用不充分、能耗高等问题,提出陶瓷辊道窑炉用生物质燃烧系统及工艺,系统采用陶瓷辊道窑炉多级余热回收利用技术和生物质气化技术,集预混燃烧技术、燃料气和助燃风自动连锁控制技术于一体。该技术节能和减排效益显著,为陶瓷企业辊道窑炉节能改造及低成本运行提供参考。     

陶瓷窑炉氢气燃料燃烧系统及节能研究

为了降低陶瓷企业产品单位能耗和碳排放强度，提出一种陶瓷窑炉氢气燃料燃烧系统及节能工艺，采用陶瓷窑炉多级余热回收利用技术和电解水蒸气制氢制氧技术，系统集预混燃烧技术、氢氧比例定量计量及自动连锁控制技术于一体。该技术节能和减排效益显著，为企业开展陶瓷窑炉节能改造及绿色低碳、可持续化发展提供参考。     

建筑陶瓷生产企业节能降耗的几种有效方法

阐述了建筑陶瓷生产企业节能降耗的必要性,分别从产品结构调整、节能技术改造研究和改变群众消费习惯等方面提出了切实有效的节能方法,重点阐述了目前建筑陶瓷企业应用普遍、操作性强、节能效果显著的的窑炉保温和余热利用节能技术改造措施。     

杭州瓷厂依靠技术进步挖掘节能潜力

以生产仿南宋窑瓷而闻名的杭州瓷厂,在加强能源管理与完善节能基础工作的同时,逐步将节能降耗的重点转向技术进步.近几年来,先后完成了20多项节能技改项目,取得了较好的效益. (1)改进隧道窑烧成工艺,提高烧成温度,快速进车,使每班产量由18车增加到20车,节约重油11%,从而降低了产品单耗. (2)实行窑炉技改,向余热要能源.不但利用隧道窑冷却带余热,而且还利     

改造耗能高的陈旧设备 实行能源的综合利用

复县陶瓷二厂是具有八十多年历史的老厂,主要产品有缸、坛、罐、盆、管等。过去,生产主要靠老式的倒焰窑,耗煤高,产量低,劳动强度大。近几年来,该厂不断加强企业的科学管理,大搞以节能为中心的技术改造和设备改造,大搞余热综合利用,实现了生产隧道窑化和半成品干燥余热化。隧道窑比倒焰窑产量提高40％,煤炭消耗降低54％。1972年至1982年倒焰窑改为隧道窑共节标煤88239吨,向国家上缴利税510万元。83年该厂被评为全国节能先进企业。     

余热利用与余热锅炉

对余热、工业窑炉排烟余热的利用以及余热锅炉的型式、结构特声、等进行了探讨。对某水泥厂回转窑余热利用情况及节能效果作了介绍。     

有关工业炉节能措施及其发展趋势的研究

能耗、烧成效率与许多因素有关,涉及窑炉的施工方法、施工的规范程度、余热充分回收和利用、建造窑炉所使用的材料等。着重从筑炉材料、炉型结构、燃烧技术、余热回收、能源管理等方面进行节能技术分析,并探讨工业炉节能的发展趋势。     

陶瓷工业隧道窑中的热管式开水器

隧道窑目前在陶瓷工业中已较普遍应用.但是隧道窑的节能潜力却是很大.隧道窑的余热分为冷却带余热及烟气余热的二部分,均可加以利用.我们改造了多台烧制面砖的隧道窑,利用冷却带余热,安装了热管式开水器.如图1所示,面砖从右向左移动,先通过预热带,再通过烧成带(即高温带),再进入冷却带使产品冷却.热管式开水器是利用冷却带的     

三环节模型在陶瓷窑炉用能评价中的应用研究

用能评价是开展陶瓷窑炉节能技术研究和节能改造的基础,根据陶瓷窑炉的用能特点,提出用三环节模型对陶瓷窑炉进行用能分析,并详细介绍了分析步骤,最后对一倒焰窑进行了用能分析,找到用能薄弱环节,提出解决方案.     

高温热管技术在陶瓷隧道窑上的应用探讨

主要探讨了高温热管技术的应用和有效地利用陶瓷隧道窑冷却带急冷段的高温余热。从烧成带过来的匣苯、垫板和陶瓷产品等具有大量的热量释放出来，应用高温热管换热器可以把这部分高温余热用加热空气作用本隧道窑的助燃风，以节约燃耗；也可以进行热管锅炉发电或提供生产、生活用蒸气，以提高隧道窑的热效率。     

燃气隧道窑热工测试与节能分析

我国工业炉窑是能耗大户,总体水平较低,具有相当大的节能潜力。以某高铝砖隧道窑为测试对象进行了详细的热工测试,测量了炉气温度、烟气参数、干燥段的气流参数以及各主要壁面的温度,通过计算窑车及物料带出的热量、干燥段排气热损失、排烟热损失和壁面散热损失等参数,对隧道窑进行了热平衡分析。结果表明,所测试隧道窑的热效率为33.4%,造成热损失的原因包括,砖坯码放方式、干燥段气流组织不合理、助燃空气量过大、围护结构保温性能差等,通过改善急冷段和干燥段气流组织,减小预混空气量,增强窑顶和烧成段保温等措施可实现该类隧道窑的节能。     

煤矸石砖窑余热利用研究

在煤矸石制砖过程中,砖坯在隧道窑冷却带携有大量高温能量,提出在隧道窑冷却带安装余热锅炉要考虑的问题,锅炉辅助设备的选择参数,如何解决原生产工艺的不足,从而增加了矸石砖的产量。同时介绍了项目产出高温高压蒸汽后的利用情况。     

Development of an energy-efficient brick kiln

Brick making in developing countries, which relies on biomass fuel, is facing energy shortage. This paper reports a study aiming to develop an energy-efficient brick kiln. The drying, preheating, firing and cooling of bricks were studied by computer simulation of a fixed bed model and resulted in a new design of downdraft brick kiln. The new kiln has four chambers to serve the four processes separately but simultaneously. A heat recovery feature was incorporated in the kiln operation. A kiln was constructed for full-scale experimentation. The experiments showed that the specific energy consumption could be as low as 2·3 MJ kg⁻¹ of brick, which was only half of that presently consumed in traditional open top updraft kilns. The energy efficiency of the new kiln was 62·6% on average. © 1997 by John Wiley & Sons, Ltd.     

陶瓷隧道窑热工计算软件包

根据80586微型计算机功能强大、使用方便、计算快速的特点,编制了陶瓷隧道窑热工计算软件包,利用该软件包,可以进行隧道窑的燃料燃烧、主要窑体结构尺寸、热平衡、燃料耗量和热效率计算。软件包具有中文提示,适用面广,它为陶瓷隧道窑的设计提供了方便。     

梭式窑烟气废热利用的模拟研究

采用商用CFD软件,通过数值模拟和正交实验分析了蜂窝陶瓷的结构参数及各工况条件对换热性能和压力损失的影响,优化了工况参数。数值模拟结果为：进入稳定工作期后,加热期温度效率为94．6％,冷却期温度效率为93．7％,压力损失为457．7Pa。在此基础上,设计了梭式窑高温空气燃烧（HTAC）系统,构建实体模型进行实验,研究余热回收系统的温度效率及烟气在蜂窝陶瓷内压力损失。研究结果表明,加热期与冷却期的温度效率分别为：92．0％,93．2％,测量热烟气和预热空气的压力损失分别为126．3,107．8Pa。     

液化气梭式窑内流场与换热的数值模拟研究

梭式窑内气体的流动与换热状况极为复杂,而流动与换热状况是影响产品质量和生产效率的重要因素,因此开展这方面的理论与实验研究具有重要的意义和价值。通过计算流体力学(CFD)软件——FLUENT6.2模拟研究梭式窑内气体流动与换热,为梭式窑结构优化、节能降污等进行基础性研究。     

Impact of kiln losses on a dehumidifier drier

The performance of a heat pump dehumidifier kiln has been measured, and the kiln energy balance assessed, during commercial-scale operation. Test data is presented for four drying tests. The results show that the drying performance of the system is impaired by excessive air exchange between the environment and the kiln, and by losses due to heat conduction through the kiln envelope. The results illustrate the importance of the integrity of the kiln structure for both the system drying speed and its energy efficiency. © 1998 John Wiley & Sons, Ltd.     

吉林镍业公司干燥炉窑节能分析

通过对吉林镍业公司干燥炉窑进行热平衡及Yong平衡的计算。得出了热效率和Yong效率，据眩分析并提出了该干燥炉窑的有效节能途径。     

Performance investigation of a passive solar-assisted kiln in the United Kingdom

Solar kilns have been existence for many years in various forms. Recently the advent of increased energy costs has led to new low energy solar powered technologies being incorporated to kiln designs to enhance their performance capabilities. However before applying new technologies it is necessary to investigate the basic kiln design. The basic kiln design is considered for the temperate climate of the United Kingdom (UK), using Computational Fluid Dynamics, validated through experimental investigation. This investigation considers whether the basic kiln design is adequate for the UK climate, with respect to sunshine hours and temperature. Key performance indicators of the kiln namely overall heat loss, air flow and temperature distribution, are analysed and reported here. The results of this work found that the low heat loss of the kiln highlights enormous potential of the lightweight structure to optimise the suns potential within a temperate climate such as the UK. Moreover the basic design is modified to demonstrate the effect of introducing natural ventilation strategies to the kiln and their effect on performance.     

Solar-heated rotary kiln for thermochemical energy storage

Thermal energy storage (TES) will improve the efficiency and output of solar power plants. TES based on thermochemical cycles is an interesting option as thermochemical cycles can provide high energy storage densities and allow longer heat storage time. The use of multivalent solid oxide reduction–oxidation (REDOX) reactions for thermochemical heat storage is a promising option. Several concepts are feasible for coupling solar energy to the redox reaction. Among those a directly irradiated rotary kiln is one of the most interesting because it is able to provide high mass flow rates and high amounts of active material. A solar-heated rotary kiln was set-up and operated in the solar furnace of DLR for thermal reduction and oxidation of cobalt oxide. The redox material was fed into the reactor batch wise and reduced on-sun at temperatures of about 900 °C and re-oxidized off-sun in the same rotary kiln. Both steps were carried out in an air atmosphere. Thirty cycles were performed with one batch showing no evident degradation of the material. The results confirm that the rotary kiln is a feasible reactor set-up for the solar reduction of metal oxides and, hence, for thermochemical energy storage.