2×600MW机组脱硫石膏亚硫酸钙含量超标原因分析及对策

石灰石—石膏湿法脱硫系统工艺复杂,影响石膏中亚硫酸钙含量的因素很多,各因素之间又相互作用。分析了某电厂2×600MW机组脱硫石膏亚硫酸钙含量超标的原因,在试验研究及系统改造的基础上指出了石灰石原料不合格是石膏品质变差的主要原因。应加强石灰石原料质量监督,以满足脱硫系统要求。     

湿法脱硫吸收塔浆液pH值异常情况处理

针对钱清发电公司石灰石-石膏湿法脱硫吸收塔浆液pH值异常现象,进行了向浆液中加入Ca(OH)2、查找石灰石粉、工艺水、烟气成分等影响因素的试验.确定了本次吸收塔浆液pH值异常的真正原因是由于系统中缺少足够的石膏晶种或晶种未长大.试验中发现:石膏晶种在pH值为4.2左右时,经过2～3天的培养,也同样可获得石灰石-石膏湿法脱硫系统正常运行所需的石膏晶种.     

浅析石灰石浆液品质调节方法与制浆系统节能

燃煤电厂烟气脱硫技术以石灰石/石膏法为主,制浆系统是其重要组成之一。以金湾电厂2×600MW机组石灰石/石膏湿法脱硫制浆系统为例,介绍了石灰石浆液品质调节方法及制浆系统节能措施。     

白泥在2×420t/h燃煤锅炉烟气脱硫系统的应用研究

对白泥在某热电公司2×420t/h燃煤锅炉烟气脱硫系统的应用进行试验研究,结果发现,白泥脱硫能力优于石灰石,且其能够提高系统的灵活性和经济性。化学分析结果表明,白泥中CaCO3含量低于石灰石,但碱性、MgO含量、Cl-含量均和活性高于石灰石;白泥供浆石膏的含水率和Cl-含量高于石灰石供浆石膏,二者在颜色和微观结构上也有一定差异,其他化学成分相差不大,但通过优化运行条件能够实现降低石膏含水率和Cl-含量的目的。虽然选用白泥作为脱硫剂会对脱硫系统产生一定影响,但从脱硫能力和经济效益上看,其明显优于石灰石。     

石灰石-石膏湿法脱硫系统节能降耗探讨

为探讨石灰石-石膏湿法烟气脱硫系统节能降耗措施，结合杨柳青电厂4×300 MW机组石灰石-石膏湿法烟气脱硫系统的长期运行工况，在分析机组负荷、燃煤硫分、脱硫效率及石膏品质等因素对电耗、水耗及石灰石粉消耗量的影响规律基础上，主要从FGD系统运行方式调整、设备改造升级、运行维护管理提升等方面总结提出了FGD系统的节电、节水及节粉技术与管理措施。为脱硫系统的经济优质运行提供可靠保障，在兼顾环保、社会效益的同时，有望进一步降低电厂的脱硫成本。     

石灰石-石膏法烟气脱硫系统处理废稀硫酸

采用石灰石-石膏法脱硫装置处理废稀硫酸.研究了石灰石浆液和废稀硫酸的不同投加顺序以及不同反应晶种(石膏浆液、石膏稀浆液)对所得石膏晶粒形态和抽滤物含水率的影响.试验结果表明:与废稀硫酸加入石灰石浆液的方式相比,石灰石浆液加入废稀硫酸的方式更利于石膏结晶,晶粒更大,所得石膏抽滤物含水率更低;以石膏浆液和石膏稀浆液作为反应...     

湿法烟气脱硫系统中碳酸盐含量测定方法

分析了石灰石—石膏湿法脱硫系统中碳酸盐含量的两种测定方法,并对各测定方法的优、缺点和适用范围进行了比较。     

湿法脱硫石灰石制浆系统的比选

石灰石制浆系统被广泛应用于燃煤电厂石灰石／石膏湿法烟气脱硫系统中。对典型的湿磨制浆和石灰石粉制浆系统从工艺流程特点、设备组成、技术经济等方面进行详细的分析比较。考虑到1000MW机组工程石灰石耗量较大，从电厂长期运行角度考虑，推荐采用技术成熟、运行经济的石灰石湿磨制浆方案，同时要加强湿磨制浆系统的日常维护和管理：     

石灰石-石膏法脱硫浆液起泡研究

在石灰石一石膏法脱硫中,吸收塔浆液溢流是较为常见的现象,它会对脱硫系统的正常运行造成较大危害,如果不采取适当的预防和处理措施,甚至会导致诸如增压风机叶片损坏等重大事故.通过分析石灰石一石膏工艺中吸收塔浆液产生溢流现象的各种原因,提出防止和解决吸收塔浆液溢流的方法,以保证脱硫系统的正常运行.     

湿法脱硫装置效率不高原因分析

分析了石灰石—石膏湿法烟气脱硫系统脱硫效率不高的原因,提出了查找方法和程序。     

湿法脱硫系统GGH结垢原因分析及对策

介绍了GGH运行中易出现的结垢、堵塞和腐蚀等问题，并对其产生的原因进行了分析，提出了减缓GGH结垢、堵塞和腐蚀趋势的措施和建议。     

火电厂烟气排放连续监测系统的检测

针对烟气排放连续监测系统（CEMS）现场检测中发现的许多问题进行了探讨。并提出建议，认为完善和规范标准体系、加强监督管理是解决当前问题的主要途径。     

湿法烟气脱硫系统设计中应注意的问题

简要介绍了电厂石灰石一石膏烟气湿法脱硫系统的组成，对湿法烟气脱硫系统设计和运行中容易出现的一些问题进行了分析，并提出相应的对策，以供脱硫系统设计和运行人员借鉴。     

广东省火电厂烟气脱硫装置运行情况分析

对广东省11个火电厂脱硫装置的运行情况进行了调研和分析，总结了脱硫装置运行中普遍存在的问题，并提出了相应的建议，对于脱硫装置的运行优化具有参考意义。     

小龙潭电厂循环流化床锅炉运行评述

阐述了国电小龙潭发电厂1025t／h循环流化床（CFB）锅炉燃用褐煤的优势，并结合系统调试、运行过程中发现的问题，提出解决措施。     

火电厂运煤系统抑尘控制因素探讨

火电厂运煤系统主要工艺过程包括卸煤、贮存、掺烧、煤输送到煤仓等。运煤系统设备及转运站扬尘污染严重，分析了污染发生的原因及解决办法，阐述了运煤系统的优化设计方案。     

Logistical management and private sector involvement in reducing the cost of municipal solid waste collection service in the Tubas area of the West Bank

This paper addresses the problems of the municipal solid waste (MSW) collection system in the Tubas district of Palestine. More specifically, it addresses the often-voiced concerns pertaining to low efficiency as well as environmental problems. This was carried out through a systematic methodological approach. The paper illustrates how a private company applied a logistical management strategy, by rescheduling the MSW collection system, reallocating street solid waste containers and minimizing vehicle routing. The way in which the MSW collection timetable was rescheduled decreased the operating expenses and thus reduced MSW collection costs. All data needed to reschedule the collection timetable and optimize vehicle routing were based on actual field measurements. The new MSW collection timetable introduced by a private company was monitored for a period of a month. The new system resulted in an improvement in the MSW collection system by reducing the collection cost to a level that is socially acceptable (US dollars 3.75/family/month), as well as economically and environmentally sound.     

Centralization of dairy farming facilities for improved economics and environmental quality

In Japan, most farm animal excreta has been stored directly on farmland. Runoff from this storage has often caused water pollution. Biogasification is anticipated as an important technology to manage excreta properly, but complex problems hinder its introduction. Economic aspects of management have been especially difficult for dairy farmers. For this study, structural problems regarding introduction of biogasification into dairy farming were identified. Subsequently, a desirable system of dairy farming including biogasification was suggested, and an evaluation model of the financial balance was constructed. A case study using current financial balances of several systems of dairy farming was evaluated using the constructed model and actual data. The systems were based on several policy alternatives including the suggested system mentioned above. Results show that a farmer can obtain sufficient income from a system featuring centralization of dairy housing and biogasification facilities and coordinated management by over six farmers.     

Evaluating waste disposal systems

Waste disposal systems conventionally exhibit many problems, such as difficulties in finding final disposal sites for incinerator residues and the issue of how to recycle waste materials. Some new technologies have been developed to solve such problems, including ash melting and gasification melting. Furthermore, to improve the power generation efficiency of waste treatment facilities so that their energy is used more efficiently, combined stoker/gas turbine power generation (super waste power generation) technology has been developed. Through examination of two cases in this study, environmental impacts and costs were determined using lifecycle assessment (LCA) and lifecycle cost (LCC) methods in a model city. In case 1, a stoker furnace was compared to a combined stoker/gas turbine system. In case 2, a stoker furnace plus ash melting system was compared to a gasification melting system. The results demonstrate that the stoker furnace has a lower environmental impact than the combined stoker/gas turbine system in case 1, and that the stoker plus ash melting system costs less than the gasification melting system in case 2, but both systems had strong impacts on the environment.     

脱硫系统GGH吹灰器高压水喷嘴改进

GGH堵塞是脱硫系统运行常见问题之一,介绍了通过扩大吹灰器高压水喷嘴口径,增加喷嘴射流流量,提高对脱硫系统GGH清洗效果的途径,并实现脱硫系统不开烟气旁路挡板进行GGH波纹板高压清洗的目的。