不同煤种在一维火焰燃烧过程中硫污染物排放特性研究

试验研究了不同煤种在一维火焰燃烧过程中硫污染物的排放特性，发现不同煤种在相同工况下燃烧硫污染物排放特性差别很大、燃烧温度、二次风温度、煤粉细度和过量空气系数对硫析出产物形式、浓度有较大影响．对锅炉燃烧调整，控制硫污染物排放，防止水冷壁高温腐蚀有一定的指导意义．     

煤矿用阻燃钢丝绳芯输送带浅谈

介绍了ST型煤矿用阻燃钢丝绳芯输送带的型号规格、性能要求、结构特点、阻燃机理、使用要求及发展趋势，为使用单位相关人员更好地使用与维护提供帮助。     

废弃印刷线路板Pb,Cd和Cr的测定

研究用原子吸收分光光度计测定废弃印刷线路板中重金属元素Pb，Cd和Cr的含量。结果表明，方法灵敏、快速、准确、操作方便，实用性强。Pb，Cd和Cr的回收率在98．9％～103．6％之间，相对标准偏差RSD〈1．45％。     

气相火焰燃烧合成铁掺杂二氧化钛纳米晶及其结构性质研究

采用气相扩散火焰燃烧制备了铁掺杂二氧化钛纳米品,并利用XRD、EPR、ICP-AES和XPS等测试手段对该催化剂晶相组成、晶粒尺寸及表面性质进行了分析.研究表明,铁掺杂改性对制备TiO2的晶相组成及晶粒尺寸都会产生影响.随着掺入量的增加,掺杂相Fe3 逐渐向TiO2体相富集,并促进了TiO2表面氧空位的生成.     

采用火焰焊补技术修补焦炉炭化室炉底破损

以某焦化厂焦炉炭化室为研究对象,分析了炭化室炉底破损的特点。在采用泥浆喷补法修补破损表面效果不佳后,改用火焰焊补方法。探讨了火焰焊补炉底破损表面的准备工作、焊补操作及后续工作,分析了火焰焊补过程中应注意的问题。火焰焊补后经过一段时间的运行,焊补部位平滑光洁,推焦操作电流稳定,出焦正常,推焦杆无明显振动,修补效果良好。     

大型商场家电类商品火灾蔓延特性研究

采用实尺实验的方法，针对模拟家电类商品的标准组件，就商品货架摆放和堆垛摆放的不同形式，研究在无水喷淋保护的条件下火灾发展和火焰传播的特性。得出该类商品发生火灾时达到旺盛期的时间、垂直方向和水平方向火焰传播速度以及火灾载荷对火灾发展影响的规律。     

PVC墙纸阻燃研究

讨论了聚氯乙烯（ＰＶＣ）墙纸的阻燃问题。利用复配阻燃剂，可取得更优异的阻燃效果。     

On the flame height definition for upward flame spread

Flame height is defined by the experimentalists as the average position of the luminous flame and, consequently is not directly linked with a quantitative value of a physical parameter. To determine flame heights from both numerical and theoretical results, a more quantifiable criterion is needed to define flame heights and must be in agreement with the experiments to allow comparisons. For wall flames, steady wall flame experiments revealed that flame height may be defined by a threshold value on the wall heat flux. From steady wall flame measurements, three definitions of flame height from wall heat flux are retained: the first is based on the continuous flame while the two others are based on threshold values of 4 kW/m² and 10 kW/m². These definitions are applied to determine flame heights from a two-dimensional time-dependent CFD model used to describe flame spread on a vertical slab of PMMA. Results show that the predicted flame heights are consistent with the available data of the literature. Defining flame height by threshold values on the wall heat flux of 4 and 10 kW/m² allows the correlation of the wall heat flux in terms of (x−x_p)/(x_fl−x_p), which is the dimensionless characteristic length scale for upward flame spread. It is also found that the continuous flame is not a characteristic length for the heat transfer to the unburnt fuel and is not really appropriate to define flame height in upward flame spread.     

Classic and novel brominated flame retardants (BFRs) in common sole (Solea solea L.) from main nursery zones along the French coasts

Brominated flame retardants (BFRs) were investigated in juvenile common sole from nursery zones situated along the French coast in 2007, 2008 and 2009. Extensive identification was performed with regard to PBDEs, novel BFRs 1,2-bis(2,4,6-tribromophenoxy)ethane (BTBPE) and decabromodiphenylethane (DBDPE), and other non-PBDE BFRs, namely, hexabromobenzene (HBB) and 2,2′,4,4′,5,5′-hexabromobiphenyl (BB-153). Polybrominated diphenyl ether (PBDE) concentrations (Σ 14 congeners) ranged from 0.01 ng/g to 0.16 ng/g wet weight (ww) in muscle, and 0.07 ng/g to 2.8 ng/g ww in liver. Concentrations were in the lower range of those reported in the literature in other European locations. Lower PBDE concentrations, condition indices and lipid contents were observed in the Seine estuary in 2009, possibly in relation to a lower water flow. The PBDE patterns and ratios we observed suggested that juvenile sole have a relative high metabolic degradation capacity. Non-PBDE BFRs were detected at lower levels than PBDEs, i.e., within the < method detection limit - 0.005 ng/g ww range in muscle, and < method detection limit - 0.2 ng/g ww range in liver. The data obtained is of particular interest for the future monitoring of these compounds in the environment.     

保障室内燃气安全的探讨

对室内燃气事故产生原因进行分析,在借鉴国内外成功经验、先进技术的基础上,根据国家相关政策规范,提出预防室内燃气事故的对策。