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工业锅炉自身成型型煤燃烧特性的试验研究 总被引:3,自引:0,他引:3
本文系统地分析了工业锅炉无粘结剂自成型型煤的燃烧特性.给出了实验室试验的研究结果,提出了在燃用型煤的层燃锅炉中燃烧的组织方法,以及炉拱的设计布置方法.试验结果为型煤在工业炉中的应用提供了依据。 相似文献
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根据上前中国块煤供不应求、而粉煤及煤泥却以在量积压,浪费能源、污染环境的现实,总结了中国现有工业型煤技术及其应用现状,分析了目前广泛应用的几种工业煤技术的优缺点。 相似文献
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一、前言 我区中小型工业锅炉存在陈旧老化、热效率低、出力不足、煤耗高等特点。且煤炭资源贫乏,多为劣质煤,工业生产能源价格偏高。针对我区工业锅炉的这种现状,南宁先行节能环保机电有限责任公司研制开发出一系列锅炉节煤技术和产品,主要有复合燃烧节煤技术,分层燃烧节煤技术,复合流化床锅炉改造节煤技术和循环流化床锅炉技术。 复合燃烧节煤技术已在柳州地区象州高宏化工厂、南宁柠檬酸有限公司和广西武鸣栲胶厂应用,取得了明显的节煤效果。经广西电力试验研究院对武鸣栲胶厂及南宁柠檬酸有限公司应用复合燃烧技术前后的对比测试 相似文献
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推广工业型煤的技术策略及其专用锅炉的研制 总被引:1,自引:1,他引:0
本文对推广工业型煤所存在的主要问题进行了分析,提出了推广工业型煤的新技术策略,并介绍了最新研制的燃用工业型煤专用锅炉的技术原理及其热工和环保方面的测试结果。 相似文献
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汽化式强化燃烧技术在工业锅炉中的应用沈阳市辽中县化工总厂是辽中县工业生产的重点骨干企业 ,针对该厂工业锅炉长期以来运行热效率偏低的具体情况 ,在 10t/h沸腾燃煤锅炉上应用汽化式强化燃烧技术及装置 ,使用后经县监测站和沈阳市环境保护监测站现场测试 ,结果如下表所示 :表 1 使用强化燃烧技术前后的指标测 试 项 目测 试 结 果 使用强化燃烧技术前使用强化燃烧技术后热效率 ( % ) 6 4 0 7 72 0 0排烟温度 (℃ ) 193 .38182 .46空气系数 2 342 38灰渣含碳量 ( % ) 0 43 0 35单耗标煤kg标煤t标汽 135 83 12 1 88尘粒排放… 相似文献
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Condensing boiler applications in the process industry 总被引:3,自引:0,他引:3
Qun Chen Karen FinneyHanning Li Xiaohui ZhangJue Zhou Vida SharifiJim Swithenbank 《Applied Energy》2012,89(1):30-36
Major challenging issues such as climate change, energy prices and fuel security have focussed the attention of process industries on their energy efficiency and opportunities for improvement. The main objective of this research study was to investigate technologies needed to exploit the large amount of low grade heat available from a flue gas condensing system through industrial condensing boilers. The technology and application of industrial condensing boilers in various heating systems were extensively reviewed. As the condensers require site-specific engineering design, a case study was carried out to investigate the feasibility (technically and economically) of applying condensing boilers in a large scale district heating system (40 MW). The study showed that by recovering the latent heat of water vapour in the flue gas through condensing boilers, the whole heating system could achieve significantly higher efficiency levels than conventional boilers. In addition to waste heat recovery, condensing boilers can also be optimised for emission abatement, especially for particle removal. Two technical barriers for the condensing boiler application are corrosion and return water temperatures. Highly corrosion-resistant material is required for condensing boiler manufacture. The thermal design of a “case study” single pass shell-and-tube condensing heat exchanger/condenser showed that a considerable amount of thermal resistance was on the shell-side. Based on the case study calculations, approximately 4900 m2 of total heat transfer area was required, if stainless steel was used as a construction material. If the heat transfer area was made of carbon steel, then polypropylene could be used as the corrosion-resistant coating material outside the tubes. The addition of polypropylene coating increased the tube wall thermal resistance, hence the required heat transfer area was approximately 5800 m2. Net Present Value (NPV) calculations showed that the choice of a carbon steel condenser ensured cash return in a relatively shorter period of time (i.e. 2 years) when compared to a stainless steel condenser (i.e. 5-7 years). Moreover, the NPV for the stainless steel was more sensitive to the change of the interest rate. 相似文献
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从处理两次热水锅炉运行事故,分析了热水锅炉保留炉水自然水循环及省煤器的缺点,提出采取直流强制水循环方式,并强调水与烟气实行逆流换热,以提高炉内传热效率。 相似文献
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我国工业锅炉行业概况及产品发展趋势 总被引:1,自引:0,他引:1
本文介绍了我国工业锅炉行业概况 ,分析了工业锅炉行业和企业面临的挑战和机遇 ,提出了随着能源供应结构的变化和节能环保要求的日益严格 ,采用清洁燃料和洁净燃烧技术的高效、节能、低污染工业锅炉将是工业锅炉产品发展的趋势 相似文献
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文中指出了大中型循环流化床锅炉采用屏式过热器的必要性,概述了屏式过热器的布置方式,提出了设计质量流速的合理范围以及壁温计算应遵循的原则,总结了屏式过热器在结构设计中防磨、热膨胀、穿墙密封等方面的经验。 相似文献
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