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凝结水精处理装置是大型火力发电机组的重要辅助设备,特别是超临界直流炉,凝结水必须100%经精处理精除盐。保证凝结水精处理系统安全、稳定、经济运行是化学水处理的头等大事,故凝结水精处理系统运行控制和不断优化尤为重要。本文针对芜湖发电有限责任公司凝结水精处理系统运行中出现的问题,进行了分析解决,并对部分控制、操作工艺进行了优化和完善,从而使凝结水精处理系统能够安全、稳定、经济的运行。为机组良好水汽品质提供了重要保证。 相似文献
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电厂凝结水精处理系统的调试 总被引:3,自引:1,他引:2
大容量、高参数火力发电厂设置凝结水精处理系统,不论从防止受热面和汽轮机腐蚀结垢,还是保证机组安全运行来说都是必要的.新建机组凝结水精处理系统的调试为其投运前必不可少的环节.详细介绍了亚临界机组凝结水精处理系统设备特点、有关水质指标,程控调试、试运行情况,并讨论了调试过程中发现的问题与解决方法和调试过程中的注意事项. 相似文献
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通过凝结水精处理系统对凝结水的纯化处理,可除去凝结水中的铜铁腐蚀产物、微量溶解盐类以及因冷却水泄漏而融入的溶解盐类和悬浮物,防止系统设备积盐、结垢、腐蚀等,起到了保证机组安全运行的重要作用。文中详细介绍了凝结水精处理系统的调试过程,及在调试过程中遇到的问题和建议。 相似文献
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尿素装置和三聚氰胺系统联运后,三聚氰胺返回尿素的工艺碳铵液造成尿素系统水碳比增高,尿素转化率下降,中、低压系统负荷增加,蒸汽冷凝液系统超温超压。针对存在问题对尿素蒸汽冷凝液系统进行改造,改造后实现了效益的最大化。 相似文献
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介绍了天辰化工有限公司粒碱系统的蒸汽冷凝水的回收再利用的工艺改造内容,通过改造,实现了粒碱系统蒸汽冷凝水的回收再利用,解决了改造前的水不能回收,且与含碱水一起化盐,富余的水因与含碱水混合,造成二次污染不能直排,为企业增加处理水的难题。同时为企业节约了水资源,降低了运行成本。 相似文献
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Several useful composite materials have been developed with natural fiber and plastic matrices, and their commercial viability has been established in terms of adding value to abundant and cheap natural resources. The Macromolecular Research Centre, Jabalpur, India, has recently developed composite from waste newspaper reinforced with plastic material using a prepreg technique wherein the matrix resin consists of resol type phenolic resin (PR) and bifunctional epoxy resin (EP) condensate. Laminates of newspaper and PR-EP condensate were prepared by hot press molding, and the newspaper weight fraction in these composites was varied from 0.30 to 0.65. The mechanical properties of five selected newspaper (PR-EP) condensate composites are reported for parameters such as ultimate tensile strength, elongation, tensile modulus, flexural strength and modulus, and heat deflection temperature (HDT). The water uptake behavior of these composites was examined by constructing water absorption isotherms, and the water diffusion coefficient and water absorption (24 h soak test) were determined. The specific tensile and flexural strengths and modulus properties of newspaper-(PR-EP) condensate composites are found comparable with one prepared elsewhere from recyclable newspaper-reinforced polypropylene thermoplastics. 相似文献
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介绍了氮肥厂工艺冷凝液回收与利用过程中存在的问题,针对问题对工艺进行简单改进,增加了复床运行周期制水量、降低酸碱耗量,解决了回收过程中出现的问题,为企业赢得良好的经济效益。 相似文献
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H. J. Krug 《European Journal of Lipid Science and Technology》1983,85(5):199-201
Possibilities of Energy Saving with Vapour or Hot Water Producers Shortage of energy is a fact and becomes a problem of world wide interest. A steam or hot water producer should be able to produce valuable steam at low costs. The Clayton steam hot water producers for example have all desirable properties of efficiency to lower the heating costs. The efficiency at low evaporation becomes even higher. The energy costs can be lowered up to 12% by a short heating time. 5-15% of the fuel costs can be saved by use of heat exchangers in systems in which the occurring hot condensate can be exploited. This can be carried out very easily by the Clayton-system. Thus result the following advantages: good efficiency, counter-current principle, compact construction, quick heating, closed condensate system. Waste heat boilers of the same construction exploit the waste heat which would be lost otherwise. 相似文献
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南京热电厂5^#机组凝结水在流经低压加热器后,水中含铜量明显升高,针对这一问题。从金属电化学腐蚀的原理出发,探讨了低压加热器铜管腐蚀的原因,提出了降低腐蚀的方法,并进行了卓有成效的实践。 相似文献