共查询到19条相似文献,搜索用时 296 毫秒
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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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通过对锅炉排污的分析,阐述了排污造成的热量损失,提出了降低锅炉排污的措施,对锅炉的排污操作和经济运行有一定指导意义。 相似文献
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锅炉爆管在工业锅炉事故中占有较大比例,而通常分析查找锅炉爆管的原因,多从水质不良、超负荷运行、锅炉结构不合理影响水循环、制造材质不佳以及安装缺陷等方面考虑,而很少涉及由于排污操作不当而导致的锅炉爆管问题。锅水经过蒸发后残留下来的杂质污物,必须通过排污... 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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传统锅炉防垢处理一般采用磷酸盐处理方式,通过保持炉水中的磷酸根含量,在锅炉运行条件下生成碱式磷酸钙水渣并随排污排走,其排污率高,浪费了大量热量及高品质炉水。通过采用Hydro-X锅炉水调节技术替代磷酸盐加药模式,有效抑制了汽水共沸,在保证蒸汽品质的前提下,提高了锅炉水的浓缩倍数,从而降低了锅炉的排污率,相应提高了锅炉的产汽量,达到了节能降耗的目的,在供热机组中具有推广及应用价值。 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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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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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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以采暖用燃气热水锅炉为分析背景,通过介绍锅炉运行过程中能源消耗情况,分析了每个环节的节能潜力,得出,降低排烟热损失、提高运行控制水平的节能潜力较大,而降低锅炉排污热损失、降低燃气热水锅炉系统补水率有一定的节能潜力。 相似文献