液氨装置工艺计算及改造总结

介绍我公司液氯装置由活塞式氨气压缩机氨-CaCl2盐水系统改为带经济器的螺杆式氯气液化机组的工艺计算,新建装置特点以及改造后的装置在我公司运行情况和使用效果。经改造后的液氯装置每年可节约电费73万余元,同时提高了装置的安全可靠性。     

提高高炉煤比的措施与效果

分析了影响高炉煤比提高的主要因素，提出了提高高炉煤比的改进措施，通过技术攻关，高炉煤比在无富氧条件下达到了100kg／t以上，降本增效效果明显。     

Study of trace elements in coal and mining wastes and its significance in China

In the world energy about 26% of all was dedved from coal combustion. Nearly 80% of the electricity produced in China is generated from coal. Coal will play the most important role in the coming 50 years as the past century in China. However one consequentially of the mining and combustion of coal is the mobilization of trace elements, especially trace metals, which have environmental and human health significance. Information on concentrations and distributions of potentially toxic elements in coal, and information On the modes of occurrence of these elements and the relations of the minerals in coal can help to predict the behavior of the potentially toxic trace metals dudng cleaning, combustion, weathering, and leaching.     

用于气煤炼焦的新型直立炉

论述了陕西省子长气煤在新型直立炉炼焦的工艺过程及炉型特点，分析了产品质量及经济效益。     

GJ5×2双槽剥片机及其在高岭土剥片中的应用

GJ5×2大型双槽剥片机是国内超细物料加工中最新出现的超细磨/剥片设备,也是目前国内这一领域内最大规格的设备,已成功应用于煤系硬质高岭土剥片中,单机能力可达1.5～2.0t/h,产品细度可达小于2μm颗粒占85%～90%。     

Laboratory simulated slipstream testing of novel sulfur removal processes for gasification application

The Wabash River Integrated Methanol and Power Production from Clean Coal Technologies (IMPPCCT) project is investigating an Early Entrance Coproduction Plant (EECP) concept to evaluate integrated electrical power generation and methanol production from coal and other carbonaceous feedstocks. Research, development and testing (RD&T) that is currently being conducted under the project is evaluating cost effective process systems for removing contaminants, particularly sulfur species, from the generated gas which contains mainly synthesis gas (syngas), CO₂ and steam at concentrations acceptable for the methanol synthesis catalyst. The RD&T includes laboratory testing followed by bench-scale and field testing at the SG Solutions Gasification Plant located in West Terre Haute, Indiana. Actual synthesis gas produced by the plant was utilized at system pressure and temperature for bench-scale field testing.     

近距离下覆4#煤层综采工作面顶板管理经验

介绍了近距离深层综采工作面顶板和巷道顶板管理经验，及综采工作面在通过巷道冒项区域时所采取的办法和措施。     

煤粉着火难易模型的初步建立

利用沉降炉试验系统，针对不同煤质的煤种进行了着火燃烧试验，采用回归分析方法确定了煤粉着火难易模型，按照该模型计算得到的着火温度指数与实际试验中测量得到的结果相符合，证明了模型的精确性。     

南桐矿区龙潭煤系热演化及煤变质研究

川东地区二叠系龙潭煤系煤变质分带与褶皱关系密切，背斜部位变质浅，向斜部位变质深，且变化急剧．在对南桐矿区重点研究的基础上，用沉积速率比值法和沉积趋势法恢复了川东地区各时期的沉积厚度以及褶皱运动前后龙潭煤系的热演化史，并用Ｈｏｏｄ法确定了煤变质阶段，对川东的煤变质规律作出了合理的解释。     

Explosion risks during the confined storage of bituminous coals : Calculation of gaseous hydrogen accumulation in ship holds

Bituminous coal piles stored in the open air can undergo autocatalytic heating accompanied by the emission of small but appreciable amounts of molecular hydrogen. When the coal is contained in a confined space and the temperature reaches 40°C, accumulation of hydrogen is expected. This process has been observed for a wide variety of bituminous coals. The amount of hydrogen gas expected to accumulate in the air pocket above the coal cargo in ship holds (assuming that the coal's temperature approaches 40°C during the voyage) has been calculated. The results clearly indicate that in most cases the hydrogen concentration will be appreciably above the lower explosion limit in air. Hence when bituminous coals are stored in a confined space (e.g. a ship hold), the explosive risk of hydrogen should be taken into account.