共查询到20条相似文献,搜索用时 171 毫秒
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煤粉燃烧需要解决的主要问题是提高燃烧效率和降低污染,对这两大问题的研究进展进行了概述。主要介绍了催化燃烧、脉动燃烧、高温空气燃烧、低NOx燃烧技术的工作原理及研究成果。 相似文献
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二、油掺水燃烧的机理及技术效果 1.改善了油的燃烧过程油掺水燃烧,绝不是拿水当油烧,而是水起了二次雾化的作用,提高了雾化质量,因此改善了油的燃烧过程,使油的燃烧很像煤气燃烧。据法国《爱尔夫(ELF)乳化油燃烧方法》的资料介绍,掺水20~30%,在保证乳化质量的前题下,油的燃烧最接近煤气的燃烧,如图6—1 相似文献
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高炉喷吹混煤燃烧率试验研究 总被引:4,自引:0,他引:4
利用等离子燃烧试验炉,对混煤喷吹进行了试验,试验结果表明:混合煤种的燃烧性能取决于单一煤种的燃烧性能的综合效果,燃烧性能较好的煤种混合后仍能保持较高的燃烧率;混合煤种燃烧率高于计算燃烧率,形成了煤种不同的促燃作用;在使用煤种不变时混合煤燃烧率取决于燃烧性能较好的烟煤配入量。 相似文献
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结合蓄热式燃烧技术的运用,本文介绍了高温空气燃烧技术及其燃烧机理,从理论上研究了高炉煤气在高温空气燃烧技术的支持下应用于加热炉的燃烧特性,说明了高温空气燃烧技术在加热炉上的应用具有节能、环保等的多重效果。 相似文献
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步进式加热炉的双交叉限幅燃烧控制系统 总被引:4,自引:0,他引:4
介绍了双交叉限幅燃烧控制系统在唐钢步进式轧钢加热炉上的应用。以系统构成及特点为主,氧含量分析校正的最佳燃烧控制为辅,叙述了该系统实现低氧燃烧和动态最佳燃烧而节能的过程。同时对双交叉限幅燃烧控制系统和氧含量分析系统进一步完善进行了探讨。 相似文献
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对100 t/h步进式铜锭加热炉燃烧控制系统进行分析,包括自动化控制系统的组成、炉压控制和气氛控制,重点介绍助燃空气和天然气的双交叉限幅控制系统及其在实际生产中的运用,通过对燃烧系统中偏差系数的调整,保证了控温精度。 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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连续稳定火焰蓄热式高温空气燃烧装置的研究 总被引:1,自引:0,他引:1
在高温空气燃烧(HTAC)系统的基础上,创造性地使燃料燃烧系统与空气蓄热/助燃热风供应系统分离,解决了现有蓄热式燃烧存在的问题,成功地发明了新型的连续稳定火焰蓄热式高温燃烧技术,拓展了蓄热式燃烧的使用范围。 相似文献
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文章对加热炉双交叉限幅燃烧控制系统原理进行分析,并介绍了一个由可编程调节器实现双交叉限幅燃烧控制的系统组成及可编程调节器的程序组态的框图.实践效果表明,该系统性能稳定,有效提高加热炉的燃烧质量和使用效率. 相似文献
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文章探讨了攀枝花新钢钒股份有限公司热轧板厂步进梁式加热炉板坯跟踪模型,建立此模型,有利于实现燃烧系统的自动控制,提高板坯加热质量。 相似文献