共查询到18条相似文献,搜索用时 93 毫秒
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本文介绍了采用HTAC技术的新型蓄热式燃气辐射管的工作原理和性能,及其在铝卷材退火炉中的应用;通过对比,说明了蓄热式燃气辐射管在节能、环保等方面较常规燃气辐射管更具优势。 相似文献
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《Baosteel Technical Research》2010,(Z1):111
High Temperature Air Combustion(HTAC) based on regenerative theory has been used in developed countries in recent years,it has many advantages such as efficient recovery of waste heat,high temperature preheating air,low pollution discharge,and so on.This Technology can be used in various furnaces in mechanical,petroleum,chemical industry.To rebuild traditional radiant-tube combustion system with HTAC technology has become important.In the transformation process,The biggest difficulty encountered is that the stability of burner combustion and control system. Because the exhaust gas heat is absorbed by the regenerator,exhaust gas discharge can be controlled at a very low temperature to realize maximum waste heat recovery.At the same time,it improves the temperature uniformity and improve the heating intensity.Thermal efficiency of the device can reach more than 80%.And compared to the traditional air preheating,21.55%energy can be saved. Revamping on traditional radiant-tube combustion system is technically feasible,but a lot of problems will be involved since the rebuild work is on the old system,this article discusses on the main problem encountered in rebuild process in site. to optimize temperature control and obtain not so high exhaust gas temperature,digital combustion control system is necessary.This control loop consists of big loop and small loop,Big loop controls the load distribution of all burners in each heating zone.Small loop controls each heating zone burner’s burning time. Compared performance of tradition radiant-tube heater with regenerative radiant-tube heater,result that regenerative radiant-tube heater have many advantage in consume fuel.Accordance with experience of replacing tradition radiant-tube heater with regenerative type,give a proposition in combustion control system, pilot burner,flame detection and prevent trouble to rebuild work of CAPL and CGL. It is recommended to use regenerative combustion technology in new annealing Line.Although the investment is 1/3 much more than the traditional combustion system,the energy saving effect is obvious and operating costs decreases.Revamping can be taken step by step according to different heating zones.Although taking a long time,it is safer and it influences the production less. Regenerative combustion burner revamping has become successful.However,the revamping work on different furnaces,particular on continuous annealing furnace with high request for temperature control,need further exploration and research. 相似文献
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在大量实验研究的基础上,借鉴国外已有成功经验,研制开发自己的高温空气燃烧系统,其中包括:蓄热式燃烧器、蓄热室、四通换向阀、控制装置等,并将其应用到30吨熔铝炉。生产结果表明,燃料节约率达54%,投资回收期少于1年。 相似文献
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介绍了攀钢连续热镀锌机组中退火炉辐射管的应用特点,并对U型辐射管和W型辐射管的热效率、表面温度分布及使用寿命等技术性能进行了深入的分析。 相似文献
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热脏发生炉煤气在蓄热式加热炉上的应用 总被引:6,自引:2,他引:4
概要论述了蓄热式高温空气燃烧技术的特点及国内应用状况,介绍了蓄热式燃烧系统的结构与特点,重点阐述了采用热脏发生炉煤气加热炉的主要技术性能以及蓄热式加热炉供热分配、煤气系统、空气管路系统和排烟系统等设计特点。并且对蓄热式加热炉生产运行中出现的问题,解决措施及生产应用情况进行了分析。实践表明,采用热脏发生炉煤气开发研制的蓄热式加热炉具有高效、优质、节能和低污染等诸多优点,具有广阔的开发应用前景。 相似文献
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介绍了蓄热式燃烧技术在青钢钰尊高线步进梁式加热炉设计中的应用情况。加热炉燃烧系统分三个供热段,采用分隔式空、煤气双预热烧嘴.直通道蜂窝体蓄热体,通过换向系统,实现了“极限余热回收”和高温空(煤)气预热。投用后,加热炉满足节能、无公害及生产操作自动化程度高的要求,钢坯加热温度均匀,吨钢燃耗1.4GJ,氧化烧损率约为0.7%。 相似文献