基于灰色系统理论的煤与瓦斯突出预测

为了对煤与瓦斯突出事故进行有效的预防与控制 ,笔者应用灰色系统理论中的灰色聚类评估方法 ,对矿井的煤与瓦斯突出进行了预测。经实例证明 ,与常用的预测方法相比 ,灰色聚类预测方法具有能动态预测、预测准确等优点。该方法将影响突出的多个因素综合系统的来考虑 ,跳出了常规预测方法只依靠单一指标进行预测的圈子 ,提高了预测的准确性。研究结果表明 ,该方法能准确地反映矿井煤与瓦斯突出规律 ,是一种新的煤与瓦斯突出预测的方法     

循环流化床锅炉脱硫的影响因素分析

较为系统的分析了影响循环流化床锅炉脱硫的各因素,其中包括运行床温、Ca与S物质的量、床料粒度、流化速度、以及SO_2在炉膛停留时间等,提出在不同运行条件下利用拟合曲线找出最佳脱硫工况。     

环评中锅炉房大气污染源强的确定

在环境评价中,污染源强的确定对环境影响因素评价的分析结果有重要作用。对锅炉房污染物排放的分析表明,影响锅炉房大气污染物的主要因素有燃料的构成、发热量和燃烧方式等。确定锅炉房大气污染物的方法主要有物料衡算法、实测法和经验系数法。在这三种方法中,物料衡算法被普遍采用。在确定锅炉房大气污染物的排放量时,也可以采用物料衡算法和实测法相结合的方法。     

事物安全演化过程的基本理论研究

安全状态的演化过程是事物发展变化过程的重要组成部分.事物的安全演化过程符合从量变到质变的原理,即服从"安全流变-突变"规律.基于事物"安全流变-突变"规律,建立理论模型,并分析和描述事物的安全演化过程.事物"安全流变-突变"规律的研究为揭示事物的安全本质规律奠定了基础.     

燃煤锅炉脱硫工艺浅谈

简述了燃煤锅炉常用烟气脱硫方法和烟气脱硫工艺选择原则，介绍一种简易脱硫工艺。     

云天化3#循环流化床锅炉项目技术经济分析

云天化股份公司在2004年建造了3#循环流化床锅炉，以煤代气。它可以缓解公司原料天然气的紧张状况，并能带来很大的经济效益。从技术经济的角度对该项目的技术先进性、可靠性及内部收益率、投资回收期、净现值等技术指标进行了分析。     

The challenges of sustainability in mining regions: The coal mining region of Santa Catarina, Brazil

Throughout history, mining communities have invariably found themselves striving for a good quality of life and a long‐term future. In the 21st century, problems of maintaining the economic vitality of mining regions are now compounded by concerns about the biophysical integrity of the local environment. In regions of the world where the economic viability of the resource is marginal and achieving a reasonable quality of life is a daily struggle, sustainable mining may seem to be a dubious prospect at best. Yet the twin imperatives of global political forces and burgeoning environmental concerns are requiring industry, governments and other interests to re‐conceptualize the way in which mining takes place in communities. Although mining itself may not be seen as an industry that contributes to the achievement of environmental objectives, it could — with careful planning — be used as a tool to foster a more sustainable and healthier community. This argument is considered in the context of the coal mining region of Santa Catarina, Brazil.     

某“W”型锅炉炉效低的综合治理

针对某锅炉经济性差的问题，从设备、运行及自动控制等方面分析，并进行了相应整改。影响炉效的主要因素有煤质恶化、灰渣含碳量高、排烟温度高和CO浓度高等，同时炉膛燃烧不稳定也是影响燃烧效率的重要因素。通过漏风整改、制粉系统优化、燃烧优化调整和控制系统优化等方法有效提高了锅炉经济性。研究表明：分析锅炉经济性降低的影响因素时应抓住主要因素，兼顾其他，科学的生产管理是保证锅炉运行经济性的重要基础；入炉煤质恶化是最主要的外在因素；良好的自动控制系统能有效稳定燃烧参数，提高燃烧效率；降低飞灰含碳量的主要工作应集中在制粉系统优化调整；完整而系统的燃烧调整试验能够保证锅炉运行控制参数的科学合理，并需要正确调整氮氧化物排放和锅炉效率之间的关系。     

Coal facies characteristics and its control on methane content in South Yanchuan Block,Southeast Ordos Basin,China

The variability in depositional environments in ancient peat bog and coal facies characteristics was investigated with 29 coal samples from four coalbed methane wells in South Yanchuan Block, Southeast Ordos Basin, China. The control of methane content is described as coal facies parameters and the corresponding measurements of methane content. The results indicated that the depositional environment of ancient peat bog in South Yanchuan Block is primarily a lower delta plain, and a low tissue preservation index (TPI) and high gelification index (GI) are typical features of reservoir’s coal facies, reflecting a deep water depositional environment in ancient peat bog. Compared with the coal facies characteristics of the western area, the coal reservoir in the eastern area displays low GI and high ash content as a result of ancient peat bog’s proximity to sea and source area. Various lateral methane contents are influenced by burial depth, whereas the characteristics of coal facies have a strong control on methane content within the single well in vertical direction. The methane content increases with increase in GI and vitrinite to inertinite ratio (V:I), while there are indistinct relationships between TPI and transportation index with methane content. With high GI and longer distance to sea and source area, the methane content in the western area is higher than that of the eastern area. High desmocollinite content also has a negative influence on methane content.     

燃煤电厂在线监测系统颗粒物浓度排放系数影响因素的探讨

选取上海市7家未安装气-气换热器的国控燃煤电厂作为研究对象，从煤质、除尘器、脱硫协同脱除作用以及锅炉工况负荷等方面探讨对颗粒物浓度排放系数 K值产生的影响，得出上述因素通过改变脱硫进口颗粒物浓度值影响 K值，当脱硫进口颗粒物浓度较低、波动范围较小时，其 K值也维持相对稳定的状态；当脱硫进口颗粒物浓度较高、波动范围较大时，其 K值也会发生较大的变化等结论。