共查询到19条相似文献,搜索用时 109 毫秒
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介绍了EWPT锅炉水处理剂在中石化上海高桥分公司#3催化裂化装置产汽系统的应用,使用后产汽系统蒸汽和炉水合格率有了较大改善、汽包排污率明显降低,达到了节能减排、提高经济效益的效果。 相似文献
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锅炉排污的控制与节能 总被引:2,自引:0,他引:2
文章分析了锅炉排污的必要性,说明根据炉水水质以及锅炉运行工况可以对锅炉排污进行有效的控制,尽量减少锅炉排污量。阐述了对锅炉排污所采取的节能措施。 相似文献
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前言锅炉在运行中,为了保证炉水水质符合国家规定标准,必须采用锅炉排污方法。连续排污是排除炉水中的盐分杂质,锅炉排污量的大小与给水品质有直接关系,给水的碱度及含盐量越大,锅炉所需的排污量越多。对于中小型锅炉,普遍采用钠离子交换法置备软水,这种方法只能除去水中的硬度,而不能降低碱度和含盐量。地下水是锅炉用水的主要来源,近年来因过度开采,水质日趋恶化,其碱度一般在 相似文献
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采用锅炉排污水降压汽化作为蒸汽喷雾介质,在炉内燃烧空间形成切圆旋流,强化炉内燃烧,改善炉内气流动力分布状态。 相似文献
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1.前言锅炉在运行过程中,由于炉水的不断蒸发浓缩,水中的杂质浓度逐渐增大,当杂质达到一定浓度时,就会对锅炉带来不良影响,因此,需要利用排污管排污。锅炉排污一般都是在汽E高、负荷低时进行的,因而冲击力较大,并伴有强烈的噪声,这种噪声级可达103分见(A)。8炉排污次数是有限制的,炉水质量较好时,要求每班至少排污一次(含锅筒、左、右联箱);炉。质量不好时J排污次数相应增多,最多的锅炉一天内排污可达10余次,每次少则1至5分钟多则5至10分钟,严重影响周围环境的安宁。为了消除排污噪声,我们根据锅炉使用单位的实际情… 相似文献
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锅炉的排污控制不仅是锅炉运行调节的组成部分,也是锅炉水质控制的一个重要的环节,它直接影响到锅炉的安全运行和经济运行。合理的排污对保持炉水的品质、蒸汽的品质、防止锅炉污垢、提高锅炉寿命、节约能源都有着重要和积极的作用。 相似文献
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Two different cases of evaporator tube ruptures in power station boilers due to natural circulation distortion are presented. The first case discussed concerns a 110-MW, unit boiler with bottom evaporation tubing inclined at 15° to the horizontal. At the high heat fluxes present in the furnace, subcooled boiling occurs in inclined tubes. For these inclinations an insufficient flow rate causes local heat transfer deficiencies due to vapor-water separation. The introduction of internally finned tubes eliminates local heat transfer deficiencies and prevents further tube failures. The second case is that of circulation interruption due to blowdown during start-up. The water level in the drum of this second 110-MW, unit boiler was controlled by inlet header blowdown during start-up. Thus, natural circulation was interrupted, causing local overheating of evaporator tubing. The event was identified by an increase of the tube rupture frequency. After changing the blowdown procedure, the interruptions of natural circulation were avoided and the tube failure frequency decreased substantially. 相似文献
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During the generation of steam, most water impurities are not evaporated with the steam and thus concentrate in the boiler water. The concentration of the impurities is usually regulated by the adjustment of the continuous blowdown valve, which controls the amount of water (and concentrated impurities) purged from the steam drum. Since a certain amount of continuous blowdown must be maintained for satisfactory boiler performance, a significant quantity of heat is removed from the boiler. It is necessary to provide a simple-to-use method to calculate the total amount of heat that is recoverable using this system. In the present work, a simple-to-use predictive tool, which is easier than existing approaches, less complicated with fewer computations and minimize the complex and time-consuming calculation steps, is formulated to arrive at an appropriate estimation of the percent of blowdown that is flashed to steam as a function of flash drum pressure and operating boiler drum pressure followed by the calculation of the amount of heat recoverable from the condensate. Since all of the heat in the flashed steam is recoverable, the total percent of heat recoverable from the flash tank and heat-exchanger system is calculated in the final step. Results show that the proposed predictive tool has a very good agreement with the reported data wherein the average absolute deviation percent was observed to be around 1.47%. 相似文献
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锅炉排污是锅炉运行中的重要操作,许多锅炉运行中发生爆管是排污不当造成的,锅炉排污问题应引起锅炉运行、操作、管理人员的重视,避免引起锅炉事故. 相似文献
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本文针对锅炉定期排污不合理的现状,分别对排污方法,排污率和排污时间作了具体分析,为锅炉定期排污提供了正确的方法,为锅炉安全经济运行提供了必要保证。 相似文献
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从对一台DZL6.0-1.25蒸汽锅炉近前炉门附近两侧炉膛水冷壁管多次发生局部爆管事故的调查出发,对该锅炉侧集箱排污系统存在的设计缺陷进行了流动分析、计算。计算表明,排污时前段集箱内流速过低是造成该段集箱区水渣大量沉积致使该区水冷壁管因水渣堵塞而引发局部爆管的根本原因。对侧集箱不同部位增开排污口方案进行的计算表明,在集箱前端增开排污口可有效地改善排污时该处集箱内水的流动性,从而消除泥渣沉积隐患。改造方案实施后,经多年的锅炉安全运行实践也证明了该方案的有效性。 相似文献