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双语推荐：水泥窑

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针对纯低温水泥窑余热锅炉烟气参数的特点,以5 000 t/d水泥生产实际数据为例,考虑发电功率、锅炉余热利用率、余热发电系统热效率、排烟温度的合理范围,得出单压不补汽式和双压补汽式纯低温发电系统中窑头AQC锅炉、窑尾SP锅炉的最优蒸发压力。结果表明:在确定的水泥窑烟气参数下,水泥窑余热锅炉蒸发压力,对余热发电系统发电功率有较大影响。
The study based on the feature of flue gas in pure low-temperature cement kiln,used actual cement pro-duction data of 5 000 t/d,analyzed power generation,boiler waste heat utilization,thermal efficiency of waste heat power generation system,exhausted gas temperature,get the best evaporation pressure in waste heat power genera-tion. The results show that evaporation pressure can effect power output a lot under certain flue gas conditions.

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受水泥窑余热参数波动的影响,水泥余热发电现有的几种除氧方式,除氧效果都不理想。以一条5000t/d水泥熟料生产线配置9MW纯低温余热发电为例,从工程应用的角度,通过理论计算及工程实践经验,详细分析探讨了水泥窑余热发电现常用三种除氧方式的优缺点。在此基础上提出了一种适应现有水泥窑余热发电的新型给水除氧工艺——无专用除氧器的新型综合给水除氧工艺系统。
Affected by fluctuation of the waste heat parameter, the effect of several existing deoxidation methods is not ideal. A 5 000 t/d clinker production line with 9MW low-temperature waste heat power generation as example, from the point of engineering applica-tion, pros and cons of three commonly used deoxidation methods for cement waste heat power generation were discussed and analysed in detail by theoretical calculation and engineering practice. On the basis a new feed deoxidization process--new synthesis feedwater deoxidization system with no special deaerator, adapt to existing cement kiln waste heat power generation was advanced.

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就即将实行的《水泥工业大气污染物排放标准》,探讨了水泥窑SNCR工艺流程结构,认为需要厂家和水泥企业共同努力才能做到实际的排放达标。
@@@@In accordance with the《Emission Standard of Air Pol utant in Cement Industry》that is about to be imple-mented, the paper discusses the flow structure of SNCR technology in cement kiln. It is considered that factories and cement enterprises should make common efforts, then they could comply with a request of the emission standard.

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水泥生产过程中碳排放因子的测算是计算水泥碳排放量的基础,为了准确测算我国水泥行业熟料煅烧阶段碳酸盐矿物分解释放CO2的碳排放因子,就需要对水泥生产线上相关样品做成分测定和综合分析.通过对国内近百条代表性较强的水泥生产线上的生料、熟料、水泥、石灰石、燃煤等样品进行钙、镁、烧失量、碳酸盐等化学成分的定量分析,并考虑新型干法窑和立窑两种生产工艺类型的差别,分析测算了基于国内水泥生产的工艺碳排放因子.结果表明：生料碳酸盐法测算碳排放因子的结果较熟料法的结果低约10kg CO2/tcl;不同窑型的碳排放因子存在明显差异,新型干法窑的碳排放因子多集中在500～520kg CO2/tcl,立窑碳排放因子多集中在480～500kg CO2/tcl;多数熟料含有少量碳酸盐.生料碳酸盐法不涉及燃煤灰分的化学成分,可以规避燃煤灰分成分的影响,测算碳排放因子采用生料碳酸盐法较准确,并且应基于不同窑型,同时考虑碳酸盐分解率问题.
CO2 emission factor was the foundation of the calculation of CO2 emissions, and it was necessary that a large amount of samples at onsite cement production stages should be analyzed and studied for accurately calculating CO2 emission factor during the decomposition of carbonate minerals in calcinations for Chinese cement industry. Quantitative analysis was Londucted on calcium, magnesium, loss on ignition, carbonate and other chemical component in raw material, clinker, cement, limestone, coal and other samples from about 100 production lines in China. At the same time, it compared the differences between new suspension preheater kilns (NSP kilns) and shaft kilns. The results showed that CO2 emission factor calculated by raw material carbonate method was about 10kgCO2/tcl lower than clinker method. There were obvious differences within different types of cement kilns, for example, the emission factors of NSP kilns were in the range of 500~520kgCO2/tcl and shaft kilns were 480

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简述了水泥工业的铬公害问题,回顾了水泥窑用无铬碱性耐火材料的研究,详述了镁钙、镁铝、镁铁铝系耐火材料的技术,分析了提高耐火材料抗热震和挂窑皮性能的原理,研讨了通过改善制造工艺和使用条件来延长耐火材料寿命的措施,展望了水泥窑用无铬碱性耐火材料的未来,并对其发展提出了建议。
The chrome pollution of cement industry was introduced briefly,the research on chrome free basic refractories for cement kilns was reviewed,the production technologies of magnesia calcia,magnesium alu-minate spinel and magnesia hercynite refractories were specified,the principles to improve thermal shock resistance and coating adhesiveness of refractories were analyzed,the measures to extend service life by improving production technology and service conditions of refractories were put forward,the future of chrome free refractories was expected and some developing suggestions were given.

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本文从水泥熟料生产线窑尾塔架电梯井安装工程的特点、抱杆设计以及电梯井安装等方面详细地阐述了利用抱杆安装水泥熟料生产线窑尾塔架电梯井的施工技术。
This article expounded the construction technology of preheater tower elevator shaft of cement production line by holding pole mounting from the characteristics of this project, holding pole design, and elevator shafts mounting aspects.

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通过水泥生料易烧性、以及熟料XRD、SEM和水泥强度等试验,研究了城市生活污泥的掺烧量对水泥品质的影响。结果表明,水泥生料中掺烧城市生活污泥可以改善并提高水泥生料的易烧性。当污泥掺量低于15 wt%时,随污泥掺量增多,熟料中A矿量增大,B矿量减少,熟料的抗折和抗压等物理性能显著增强,水泥品质得到提高。当污泥掺量超过15%wt时水泥品质略有下降。适宜的污泥掺烧量不大于15 wt%,利用水泥窑掺烧处理城市生活污泥是可行的。
In order to investigated the influence of mixed incineration amount of the municipal sludge on the cement quality, the burnability of raw cement, the XRD and SEM characters of the cement clinker and strength of cement have been explored. The results showed that the mixed incineration of municipal sludge in the raw cement could improve the burnability of the raw cement. With the increasing of mixed incineration amount of sludge below 15 wt%, the amount of Alite crystalline phase in the cement clinker increased, the mount of Belite crystalline phase decreased and the physical properties such as bending strength and compressive strength significantly increased, the cement quality was improved. The cement quality was slightly decreased when mixed incineration amount of sludge was above 15 wt%. Mixed incineration amount lower than 15 wt%was appropriate. The method of the municipal sludge mix-incinerated in the cement turning kiln is feasible.

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以陕西声威水泥厂sNcR脱硝工艺数据为基础，从水泥窑烟气治理工程的设计参数、系统运行状况以及sNcR脱硝系统关键影响因素等方面，介绍了国内第一批水泥脱硝工程的经验。
@@@@Based on the data of SNCR denitration technology in Shengwei Cement Plant of Shanxi and from the view point of design parameter, system operation and key impact factor of SNCR denitration system, the paper introduces the experiences of the first cement denitration engineering at home.

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随着水泥窑脱硝技术从理论探讨走向实际应用，水泥生产企业在NOx减排方案的选择上，需综合考虑区域特点、炉型特性和长远环保要求，采用专业的调研检测、个性化方案设计和周全的工程实施，以有利企业发展和满足环保要求。
With the cement kiln denitration technology tending to the practical application from theoretical discussion and the selection of NOx emission reduction in cement production enterprises and in accordance with the regional characteristic, kiln model characteristic and long term environmental protection requirement, the paper adopts professional study and inspec-tion, individuation scheme design and comprehensive engineering implementation so as to meet the requirement of enterprise development and environmental protection.

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根据水泥窑纯低温余热发电系统工艺特点及控制要求，设计了基于iFIX组态软件的余热发电监控系统。该系统具有强大的监视、控制和管理功能，能够实时地显示被监控设备的各种数据，同时完成报警、趋势曲线、历史记录、报表打印等功能。运行结果表明，该系统很好地满足了水泥生产线余热发电控制要求。
According to the production process and the control requirement of pure low temperature waste heat power generation plant, A SCADA system based on iFIX configuration software was designed. It had the strong function of monitoring, controlling and management with showing timely the data of de-vices, as well as the function of alarming, trend curve, history records and printing of report table etc. The running results show that the system meet the control requirements of waste heat power generation. in cement production line.

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