共查询到18条相似文献,搜索用时 328 毫秒
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介绍了焚硫炉计算流体动力学(CFD)模型及模型建立中涉及的一些关键因素。利用CFD模型可以更好地理解焚硫炉、焚硫炉与周围管道的关系、焚硫炉对不同硫原料系统或流量的处理能力,从而为焚硫炉设计和改造提供依据。NORAM公司几项新焚硫炉设计和旧焚硫炉改造项目表明,合理使用CFD技术并选用合适的磺枪,一台与原设备尺寸相同的焚硫炉可以获得更高的产能。 相似文献
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苏州精细化工集团公司 30 0kt/a硫磺制酸装置焚硫炉为卧式圆形结构 ,下部有 6个鞍座 ,分别坐落于 6个条形基础上 ,每个基础上都设有预埋钢板。焚硫炉筒体 内 5384mm× 1 470 0mm ,材质为Q2 35-A碳素钢 ,内部砌筑耐火砖。现场制作安装焚硫炉的难度较大 ,主要表现在如下几个方面 :a 焚硫炉筒体的椭圆度须控制在± 6mm以内。筒体椭圆度控制得好 ,才能有效地保证砌筑的耐火砖内表面的圆度 ,从而保证砌筑质量。b 焊缝强度及严密性要求较高 ,因为焚硫炉投产后 ,其内部砌筑的耐火砖极易出现一些裂纹 ,若焊缝强度及严密性较差 ,焚… 相似文献
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苏州精细化工集团公司300kt/a硫磺制酸装置焚硫炉为卧式圆形结构,下部有6个鞍座,分别坐落于6个条形基础上,每个基础上都设有预埋钢板.焚硫炉筒体内5384mm×14700mm,材质为Q235-A碳素钢,内部砌筑耐火砖.现场制作安装焚硫炉的难度较大,主要表现在如下几个方面: 相似文献
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阐述福建申远新材料有限公司500 kt/a硫黄制硫酸装置焚硫炉及余热锅炉的结构。详细介绍投料试车前焚硫炉烘炉、余热锅炉煮炉的过程、操作经验及注意事项等,为新建硫黄制硫酸装置的焚硫炉烘炉及余热锅炉煮炉提供参考。 相似文献
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张光敏 《硫磷设计与粉体工程》2005,(5):40-44
焚硫炉是硫磺制酸装置的关键设备之一,随着装置大型化对筑炉提出了高要求。总结了250kt/a硫磺制酸装置焚硫炉的筑炉施工要点,供同仁参考。 相似文献
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硫磺制酸焚硫炉、废热锅炉或硫铁矿制酸沸腾炉耐火砖内衬局部脱落或开裂是常见问题。威顿公司采用在线喷涂修补技术先后对2套400kt/a硫磺制酸装置焚硫炉耐火砖内衬进行修复,前后仅耗时1个多小时。生产实践表明,喷涂修补技术的应用效果相当好,可以大大延长焚硫炉的使用寿命。 相似文献
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焚硫炉温度测量的长周期有效性对硫磺制酸装置的运行很重要。因为焚硫炉操作温度与二氧化硫浓度的对应关系比较符合理论值,所以通过焚硫炉温度测量值能有效判断喷磺量的合理性;同时尾气排放指标也比较容易得到控制。另外,焚硫炉砌体的安全运行也需要温度计进行监控。现就威顿(中国)化工有限责任公司(以下简称威顿公司)对焚硫炉温度测量的生产实践谈一此看法. 相似文献
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分析了硫磺制备酸容易发生露点腐蚀的原因。硫磺中的有机物、水分、游离硫酸均可能增加炉气水分含量,相应提高了炉气露点温度,加之省煤器进水温度低,则容易发生露点腐蚀。采用优质硫磺作原料,在省煤器低温段采用热管元件等可有效地解决硫磺制酸露点腐蚀问题。 相似文献
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焚硫炉中预转化产生的SO3干扰了碘液法测定转化器进口SO2浓度的准确性。基于硫磺制酸装置的尾气氧浓度、焚硫炉温升以及转化总温升与初始SO2浓度之间存在关联,列出对应的数据,描绘出关系图并归纳出计算式。举例并讨论了4种确定转化器进口SO2浓度方法的具体应用。 相似文献
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F. H. Norton 《Journal of the American Ceramic Society》1927,10(6):438-442
The need for accurate control of an oil-fired furnace operated at a temperature above the range of platinum thermocouples led to the development of a new type controller. Disadvantages of ordinary types of controllers are discussed. The mounting of the radiation pyrometer used is described. Full details of the construction and operating principles of the controller are given. Results obtained are far better than with most careful hand control. 相似文献
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A heat flux entering steam generating tubes in power station boilers may be a critical factor in considering the safety of the tubes. The knowledge of the distribution and magnitude of this flux during the operation of the power boiler is very important. The design of a modern boiler furnace requires the computation of furnace wall metal temperatures for the proper selection of the tube thickness and material. These temperatures are functions of the heat fluxes and the internal heat transfer coefficients. In this study, a measuring device (flux-tube) and a numerical method for determining the heat flux in boiler furnaces, based on experimentally acquired interior tube temperatures, are presented. An inverse method was developed, which can estimate the following parameters: the absorbed heat flux, the heat transfer coefficient on the inner tube surface and the temperature of water-steam mixture from temperature measurements at several interior locations of the flux-tube. The least squares method was used to minimize the differences between the calculated and measured temperatures. The unknown parameters are found using the Levenberg-Marquardt method. The number of temperature sensors (thermocouples) is greater than three because the additional information can help in more accurate estimations of the unknown parameters. The temperature dependent thermal conductivity of the flux-tube material was assumed. The developed flux-tube can work for a long time in the destructive high temperature atmosphere of a coal-fired boiler. 相似文献
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以某70 kt/a硫磺回收装置为例,仅对主燃烧炉和尾气焚烧炉的设计作一回顾,着重介绍设备结构、设计特点、材质选择及耐火衬里的施工要点等。在项目的基础设计阶段,根据炉膛结构特点、炉膛温度及耐腐蚀性的要求,主燃烧炉采用衬砖结构,尾气焚烧炉采用整体浇注结构。后因用户要求,在施工图设计阶段,两台工业炉均按衬砖结构设计。目前,主燃烧炉和尾气焚烧炉已正常运行一年多。通过该装置工业炉砌筑安装的实践,提出了今后设计主燃烧炉和尾气焚烧炉在材料和结构方面的改进措施。 相似文献
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Temperature Measurements during Microwave Processing: The Significance of Thermocouple Effects 总被引:2,自引:0,他引:2
Evan Pert Yuval Carmel Amikam Birnboim Tayo Olorunyolemi David Gershon Jeff Calame Isabel K. Lloyd Otto C. Wilson 《Journal of the American Ceramic Society》2001,84(9):1981-1986
Reliable and accurate temperature measurement during microwave processing of ceramic bodies is controversial. Although thermocouples are routinely used in conventional thermal furnaces, their presence in microwave furnaces can locally distort the electromagnetic field, conduct heat away from the sample, induce thermal instabilities and microwave breakdown, and lead to serious measurement errors. These thermocouple effects have been studied and found to be more pronounced in low- and medium-loss ceramic materials. To decrease the thermocouple effects during the processing of advanced ceramic materials, an optical, noncontact temperature sensing system has been developed, calibrated, and incorporated into a computer-controlled microwave furnace. 相似文献