中国煤的燃烧和NOx排放特性研究

来源 :中国化学工程学报 | 被引量 : 0次 | 上传用户:julienchen
下载到本地 , 更方便阅读
声明 : 本文档内容版权归属内容提供方 , 如果您对本文有版权争议 , 可与客服联系进行内容授权或下架
论文部分内容阅读
Seven Chinese coals ranking from anthracite to sub-bituminous from the Shanxi province were selected for study to forecast the combustion and NOx emission behavior. Three UK, one Indonesia and one South Africa coal was included in the study for reference. A flat flame-turbulent jet apparatus was employed to assess flame stability, ignition performance and NOx emission behavior for the initial stage of devolatilization and combustion.This apparatus can simulate particle heating rates, maximum temperatures and the influence of the turbulent fluid interactions on the fate of volatiles. To simulate processes occurring over longer residence time, additional devolatilization experiments were performed in a drop tube furnace. Char reactivity was studied through thermogravimetric analysis. Finally, fouling propensity was studied with the aid of a purpose-built laboratory combustor that enabled the characteristics of the ash deposit to be assessed empirically. The results show that Chinese coals do not appear to possess unusual features in respect of NOx formation, flame stability and ignition, char burnout and ash slagging. The range of coals available in China appears sufficiently broad that suits all requirements. In particular, Shenfu coal, with its initial fast devolatilization and nitrogen release rates and its low initial nitrogen content and high char reactivity, will perform well when fired in industrial boilers as far as NOx emission, flame stability and combustion efficiency are concerned. Pingshuo coal exhibits high char reactivity and an attractive slagging performance suggesting that this fuel represents a good compromise between NOx emission and overall plant efficiency.
其他文献
Objective: to evaluate cilazapril in vasovagal syncope treatment. Method: eighty-six cases of VVS patients found positive in TTT tilt were medicated with 2.5 mg
The dynamics of forest ecology was studied. The pH values, electrical conductivities and concentrations of metal and nonmetal elements in rainfall, stream, thro
利用全球地震台网的长周期地震仪记录到的远震体波反演了2000年6月4日印度尼西亚苏门答腊南部Ms8.0地震的时空破裂过程.从P波和S波提取的震源时间函数的方向性效应都清楚地表
In this paper, we studied the dual form of the basic line algorithm for linearprograms. It can be easily implemented in a tableau that similar to the primal/dua
我国沥青混合料桥面铺装早期破坏严重,防水粘结层破坏是导致桥面铺装病害的一个主要原因,而且至今仍然缺乏有效的措施。解决层间胶结材料质量薄弱问题,是桥面铺装耐久性的重
Extraction equilibrium features of succinic acid, malic acid, maleic acid and fumaric acid were investigated systematically with trioctylamine (TOA) in chlorofo
庞西垌—金山银金矿床位于广东廉江县与广西博白县的交界 ,是一个以银为主 ,含有金、铅、锌等伴生有益组分的银多金属矿床。研究表明 ,前寒武系—寒武系变质岩系是银金矿床的
Objective: to report the application of GPIIb/IIIa antagonist (Integrilin) in peri-percutaneous transluminal catheter angioplasty and stent implantation in Chin
镰刀龙类化石主要分布于亚洲白垩纪地层(Russell and Dong,1993;Xu et al.,1999a;Kirkland and Wolfe,2001).最近发现于内蒙古上白垩统二连组的杨氏内蒙古龙(Neimongosaurus
针对轮南地区奥陶系裂缝型储层埋藏深、构造形成期多、影响因素多、后期改造作用复杂等特点 ,采用数理统计、应力场数值模拟、岩石力学性质与构造、沉积、钻井资料相结合分析