The selection of flue gas reheat methods in the wet flue gas desulfurization;
湿法烟气脱硫工艺中烟气再热方式的选择
In this paper,the causes of(gypsum) scale formation and equipment corrosion,and the problems of flue gas reheat and the oxidation of sulfite pertinent to(separation) of solid from liquid are analyzed.
本文对湿式石灰/石灰石FGD过程中的石膏结垢成因、设备腐蚀原因、烟气再热以及与液固分离等相关的亚硫酸盐的氧化等问题进行了分析,归纳对比了现行技术措施的优缺点。
At temperature about 550 ℃,the weld coarse ccrystal region of HCM2S steel exist tendency of reheat embrittlement,however,the sensitive temperature range of reheat embrittlement is waiting to be further studied and determined.
HCM2S钢焊接粗晶区在550℃左右时,存在再热脆化倾向,再热脆化的敏感温度范围需进一步研究确定。
So the crack is reheat crack,it can be .
通过扫描电镜、能谱仪及光学显微镜对裂纹产生原因进行了深入分析,认为该裂纹属高温形成的再热裂纹,可以通过改变预热、后热温度,提高焊接质量以降低应力集中等方法来防治。
The base metal 15CrMoG component and weldability,welding method,welding material,welding structure,technics parameter,welding process and heat treatment were analyzed,the improving welding measure was put forward,which effectively avoided reheat crack and the other welding defects of certain ship boiler pipe.
通过对15CrMoG钢母材成分及焊接性能、焊接方法、焊接材料、焊接结构、工艺参数、焊接操作和热处理的分析,提出了改进的焊接措施,有效地防止了某船锅炉管再热裂纹和其它焊接缺陷的产生。
After analyzing,the source of the welded joint fracture on the sealing structure of the reheater through the penthouse superheater in a 1025t/h boiler is reheat crack which is caused by high rigidity and high stress concentration of the welding joint,excessive welding energy input and heat stress existing in the joint when operating.
分析某发电厂1025 t/h锅炉再热器穿顶密封结构焊接接头的开裂源于再热裂纹,裂纹的产生原因在于:焊接接头高刚度、高应力集中,过大焊接线能量及接头在运行中存在热应力。
The susceptibility of HCM2S steel to reheat cracking has been studied by y-groove restraint weld cracking tests,which confirm the steel's susceptibility in the temperature range between 690(°C)～760(°C).
通过斜y型拘束焊接试验方法对HCM2S钢的再热裂纹敏感性进行了试验研究。
On the basis of the principles and structures of the cold cracking implant testing machine,the study on the implant equipment of reheat cracking test is reviewed in this paper.
在深入分析冷裂纹插销试验机的原理和结构的基础上,本文进行了插销式再热裂纹试验装置的研究工作。
Method of non-destructive inspection、analysis and structure improvement for welded joint fracture on the ceiling sealing structure of boiler reheater;
再热器顶棚密封焊缝开裂探伤方法、原因分析及结构改进措施
Study on high temperature steam corrosion of inner tube of superheater and reheater in boiler;
过热器和再热器管内壁的高温水蒸汽腐蚀研究
Analyses on tube failures of low temperature reheater of home made DG1025t/h boiler;
国产DG1025T／H锅炉低温再热器管爆管分析