“十二五”水泥行业NOx总量减排形势分析及对策探讨

分析“十二五”水泥行业NOx减排形势,探讨积极应对措施,对推进水泥行业NOx减排工作及实现减排目标具有重要意义.本研究在对水泥行业NOx排放控制现状分析的基础上,结合水泥行业产业政策和环境管理要求,采用情景分析法,对“十二五”水泥行业NOx新增排放量进行了预测,探讨了不同减排途径下水泥行业可实现的减排目标及面临的减排形势,并从激励机制、政策引导、循环经济、监督管理等方面提出了相应的意见和建议.     

水泥行业SO2和NOX排放总量核算方法选取

就水泥企业SO₂和NO_X排放总量核算方法的选取问题,以3家不同类型水泥企业为例,以监测数据法核算结果为依据,对排污系数法和物料衡算法的核算结果进行统计学描述和差异性检验。结果表明:排污系数法能基本反映各类企业SO₂、NO_X实际排放状况;物料衡算法不适合各类企业NO_χ的总量核算;对含熟料生产线的水泥企业,物料衡算法核算得出的SO₂排放量偏小,实际工作中不建议采用;对粉磨站水泥企业,物料衡算法与排污系数法均能反映实际SO₂排放情况,建议以"取大值"原则选取。     

低温余热发电技术在新型干法水泥生产线的应用

常州盘固水泥有限公司在新建4 500t·d-1水泥熟料生产线的同时,配套建设了低温余热发电,项目建成后,吨水泥能耗下降11%,窑头烟气粉尘削减量为2%,年增直接经济效益2 603万元,真正实现了节能减排增效的目标.     

水泥窑协同处理危险弃废物的应用

危险废物对生态环境和人类健康构成严重的危害。水泥窑协同处理危险废物能同时实现减量化、无害化以及资源化,是最有效的处理危险废物的方法。大连东泰产业废弃物处理有限公司利用水泥窑协同处理危险废物。实现废物处置与水泥生产的优化组合。     

The impact of a cement company’s CSR programmes on the lifestyles of a rural community: a case study in the Ring 1 area in Tuban,East Java,Indonesia

The studies about patterns and impacts of a company’s corporate social responsibility (CSR) programmes on the local communities have been conducted in a number of developed countries. The similar studies, however, were still rarely conducted in developing countries, particularly in Indonesia. This study aims at discussing the impact of the CSR programmes of a cement company on the lifestyles of a rural community in six villages in Tuban district of East Java Province in Indonesia. The study was conducted from January to September 2015, using qualitative data collection and analysis. This study found that the presence of the cement company has made both positive and negative impacts to the rural community. For the positive impacts, we can see the development of infrastructure that makes the villages become more representative; the emergence of new business opportunities, such as food stalls and boarding houses; and the improvement of the quality of human resources through free health care, education, and religious activities. The supports from the cement company, however, have not been distributed equally among the villagers. In addition, we can also see the following negative impacts: the increase of social tense among the villagers due to the tight competition to obtain work in the cement company; the uneasy relation between the local people and the immigrants who work in the cement company; the decrease in the number of people working in agricultural sectors, as most of them have moved or wish to move to the cement company.     

Reuse of de-inking sludge from wastepaper recycling in cement mortar products

This paper presents results of an investigation into the use of de-inking sludge from a paper recycling mill as feedstock material in the manufacture of cement mortar products, including masonry blocks and mortar renders. Both physical and mechanical properties of mortar specimens containing various amounts of de-inking sludge were investigated. It was observed that the addition of de-inking sludge to cement mortar at a fixed water-to-cement ratio significantly reduced flow properties and increased setting time. Water absorption and volume of permeable voids of cement mortar increased with increased dosage of de-inking sludge, with a corresponding reduction of bulk density. The 91-day compressive strength of mortar samples with 2.5 wt% and 20 wt% de-inking sludge loadings retained 83% and 62% respectively of the reference mortar strength. The corresponding drying shrinkage increased by up to 160% compared to reference samples. However, a de-inking sludge loading of up to 2.5 wt% did not significantly alter measured physical and mechanical properties. The results demonstrate that despite the high moisture absorbance of de-inking sludge due to its organic matter and residual cellulose fibre content, it serves as a potential supplementary additive and its cellulosic content proving to be an active set retardant to cementitious masonry products.     

SCR脱硝技术在天然气浮法玻璃窑炉上的应用

分析了天然气浮法玻璃窑炉烟气、飞灰的特性,通过合理布置浮法玻璃窑炉的烟气除尘、脱硝工艺,引进高效、先进的SCR脱硝技术,合理选用催化剂,达到《平板玻璃工业污染物排放标准》（GB26453-2011）环保要求。     

水泥窑窑头余热锅炉热水器振动原因分析

本文对一台水泥窑窑头余热锅炉热水器的振动问题进行了分析,发现其成因为管屏内发生了脉动现象。根据锅炉运行参数与结构形式,提出了针对性的处理及预防措施,可为同类余热锅炉的运行操作与设计优化提供参考。     

Use of silicon and ferrosilicon industry by-products (silica fume) in cement paste and mortar

With increased environmental awareness, recycling/utilization of industrial byproducts is gaining ground. One such by-product is silica fume (SF), which is byproduct of the smelting process in the silicon and ferrosilicon industry. By-products of the production of silicon metal and the ferrosilicon alloys having silicon contents of 75% or more contain 85-95% non crystalline silica. Silica fume is very useful in the design and development of high quality cement paste/mortar and concrete.This paper presents comprehensive details of the physical, chemical, properties, and its reaction mechanism. It also covers the hydration characteristics, consistency, setting times, workability and compressive strength of cement paste and mortar.     

水泥工业项目竣工环保验收监测中应关注的问题

根据建设项目竣工环境保护验收规范要求,结合工作实践,从验收监测工况的控制、废水监测、废气监测、噪声监测、环境质量监测几方面归纳了水泥工业项目竣工环境保护验收监测工作中应注意的技术问题,并从环保法律法规制度执行、污染防治设施、企业环境管理、排污口规范化、卫生防护距离、总量控制、淘汰落后设备、公众参与等几方面提出环境保护检...