锅炉

ABSTRACT The problems about overheating of superheaters and reheaters widely exist in high-capacity comer-fired boilers, and seriously affe...

过热器和再热器超温问题在大容量切向燃烧锅炉中普遍存在，严重影响锅炉机组运行的安全性和经济性。

Author made a survey of the failures of boiler superheater s and reheaters in power plant units of the Ministry of Electrical Power. Statistics made last three years shows that 40-50% of the total pressure part failures were due to superheater -reheater leakage and tube failures.

作者对水电部所属电站中锅炉的过热器和再热器事故进行了全面调查，据近三年来的统计，过热器和再热器的泄漏、爆破次数占锅炉受压部件故障的40～50%。

Tangentially fired boilers have been widely employed in China as power producer, while there have fairly a lot of problem left unsolved, including gas deviation that may trigger tube leakage for superheaters and reheaters or cause accident. There are also concerns on slagging and pollutant esp. Nitrogen oxides.

四角切向燃烧锅炉在我国的应用极为广泛，但是仍然存在着许多尚须完善的地方，如炉膛出口的烟气偏差常常会导致对流过热器、再热器的超温爆管；此外四角切向燃烧锅炉的运行中还存在着污染排放高，易结渣的问题。

These factors have seriously influenced the security and economical operation of the unit. This paper firstly summarizes the research background and the general situation of resarch about the overheating problem of boiler's high-temperature surface ,introduces the aspects and research findings in this field such as flux deviation、thermal deviation、flue gas velocity deviation at the exit of furnace and tee bends,et al.Then analyses the reason why high-temperature surfaces are overheated from such aspects as design、manufacture、operation, et al and points out one of the main factors that cause the overheating of reheaters is the flue gas velocity deviation caused by the remaining turning at the exit of furnace.

本文首先综合论述了课题的研究背景和目前电站锅炉高温受热面超温问题的研究概况，介绍了国内外流量偏差、热偏差、炉膛出口残余旋转、&三通&等研究方向和研究成果，然后从锅炉的设计、制造、运行等方面分析了高温再热器超温的原因，指出水平烟道内气流的残余旋转是造成再热器超温的主要原因之一。

The gasification and phase splitting combustion boiler has stability and advance of high-efficient environmental protection, It has overcome the pollution difficult problem that the traditional boiler can t be solved.

煤气化分相燃烧锅炉具有高效环保的稳定性及先进性，克服了传统锅炉无法解决的污染难题。

A new scheme has been proposed to retrofit a 75t/h pulverised coal firedboiler into a 100t/h circulating fluidized bed boiler.

本文对某化工企业的75t／h煤粉锅炉改造为100t／h循环流化床锅炉进行了技术方案研究。

The combustion of coke sampling from a boiler of ethylene plant was studied on a laboratory unit. The effects of combustion temperature and oxygen flow rate on coke combustion were investigated. Four combustion promotors were prepared and added into the coke for proceeding the combustion test.

摘 要：采用国内某乙烯厂余热锅炉生成的焦炭为原料，在自行设计的焦炭燃烧试验装置中，对乙烯装置余热锅炉焦炭的燃烧过程进行研究，考察了温度、氧气流量等主要因素对焦炭燃烧的影响，并研究配制了4种具有良好助燃效果的助燃剂组分进行焦炭催化燃烧试验。

The combustion of coke sampling from a boiler of ethylene plant was studied on a laboratory unit. The effects of combustion temperature and oxygen flow rate on coke combustion were investigated. Four combustion promotors were prepared and added into the coke for proceeding the combustion test.

采用国内某乙烯厂余热锅炉生成的焦炭为原料，在自行设计的焦炭燃烧试验装置中，对乙烯装置余热锅炉焦炭的燃烧过程进行研究，考察了温度、氧气流量等主要因素对焦炭燃烧的影响，并研究配制了4种具有良好助燃效果的助燃剂组分进行焦炭催化燃烧试验。

There are many sam pling points in the test etc. The analytic data of the combustion adjustment tes t of industria l boiler at Bao Steel has reference significance for the other boilers burning metallurgical gases.

文中结合上海宝山钢铁集团公司工业锅炉的燃烧调整试验加以分析，对数量众多的燃烧冶金煤气锅炉的试验或计算是有参考意义的。

Such leveling method can not ensure resistance equilibrium among the pulverized coal feeding pipings during the boiler actual operation.

电站锅炉制粉系统送粉管道中广泛采用冷态纯空气阻力调平方法，在纯空气条件下的阻力调平不能保证锅炉实际运行时各送粉管道间的阻力平衡。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。