共查询到20条相似文献,搜索用时 203 毫秒
1.
针对实际使用煤种的特点,适当改变斜推往复炉排的前后拱墙几何尺寸和角度,提高燃烧效率,降低烟气排放污染,节资降耗. 相似文献
2.
介绍分层型煤固硫给煤技术装置的结构原理,改善链条锅炉的燃烧状况及减少烟气中SO2的排放,取得了较好的节能和环保效益。 相似文献
3.
臭氧强化内燃机燃烧研究 总被引:8,自引:0,他引:8
对臭氧强化内燃机燃烧的机理进行了探讨;并采用高频高压脉冲洞面放电技术,成功地研制了一台柴油机用臭氧发生装置;利用该装置,以空气为原料产生臭氧,对进 含有一定浓度臭氧的柴油机的燃烧及排放性能进行了实验研究。实验结果表明,臭氧具有催化和强化内燃机燃烧的作用,臭氧助燃可通过改善燃烧达到节能和净化排放的目的。 相似文献
4.
5.
近年来,世界大气污染已成为严重的问题,尤其是在北美1995年将实习于车辆HC排放的严格化规定。车辆HC排放的最高值来自车辆燃料箱的燃烧蒸气,迄今,我们还没有测量车辆在公路上行驶的燃烧蒸气量的装置。我们利用热式质量流量计研制出一种燃烧蒸气流量测量装置。这种流量测量装置使我们能够测量车辆行驶燃烧蒸气的流量。 相似文献
6.
可控掺水燃烧降低柴油机排放的燃烧分析 总被引:1,自引:0,他引:1
在不改变柴油机结构的1135柴油机上进行了掺水比例可控的燃油乳化试验研究。使用自制的一套不需加乳化剂的在线乳化装置进行台架试验,探索不同负荷下油耗、NOx及碳烟排放随掺水比例增加的变化规律,并从燃烧特性方面对降低排放的原因作了分析。燃烧分析说明:掺水比例可变的在线乳化燃油和乳化油燃烧特性基本一致;掺水比例随负荷变化,能够实现小负荷时工作稳定,大负荷时大幅度降低NOx和碳烟排放的目标。 相似文献
7.
8.
介绍分层型煤固硫给煤技术装置的结构原理 ,改善链条锅炉的燃烧状况及减少烟气中SO2 的排放 ,取得了较好的节能和环保效益。 相似文献
9.
10.
11.
12.
13.
14.
15.
16.
高温空气燃烧技术具有高效节能和低NOx排放等多重优越性,是一种新型燃烧技术。为了深入研究高温空气燃烧机理和低氮氧化物排放特性,将湍流N—S方程与扩散燃烧模型和热力型NO生成模型相结合,研究了低氧浓度条件下,燃烧参数,如燃气供应量,过量空气系数,进口空气预热温度以及进口空气氧含量对燃烧的影响,为发展高温空气燃烧技术提供了理论依据。 相似文献
17.
18.
《International Journal of Hydrogen Energy》2019,44(11):5592-5598
A CFD simulation model with simplified chemical reaction mechanism was built based on CONVERGE software to study the in-cylinder combustion progress and NO generation mechanism of hydrogen fueled internal combustion engine (HICE). Simulation results show that the in-cylinder combustion progress experiences the ellipsoidal flame stable propagation stage and the rapid turbulent combustion stage. At the end of rapid turbulent combustion the OH concentration decreases quickly, the peak temperature and maximum NO mass appear at that time, and then the in-cylinder temperature and NO mass decrease step by step. The final emission depends on the peak temperature and NO decomposition time of high-temperature regions. The higher the maximum temperature, the greater the NO peak mass; and the faster the temperature drop, the less the NO decomposes. Adoption of EGR can reduce the in-cylinder maximum temperature, and NO decomposes sufficiently at low speed, which in turn leads to lower NO emission of HICE. 相似文献
19.
LI Yuze JIA Yuliang JIN Ming ZHU Xutong GE Bing MAO Ronghai REN Lilei CHEN Mingmin JIAO Guangyun 《热科学学报(英文版)》2022,31(1):198-206
Axial Fuel Staging(AFS)technology is an advanced low-emission combustion method in modem gas turbine,which divides the combustor into two axially arranged combustion zones.For revealing the characteristics of axial staged combustion,an industrial-grade combustor was designed and built.The distribution of temperature and velocity field in the combustor was presented with numerical simulation.And an Atmospheric Combustor Test Rig for axial staged combustion was built.The flow resistance characteristics of the combustor were measured at first.Then the effects of the equivalent ratio and the preheating temperature on the pollutant emission and combustion instability were investigated.The results show that the total pressure recovery coefficient in cold state is always above 98%;starting the secondary combustion at low load can reduce NO emissions by 50%,and can suppress the combustion oscillation amplitude of the combustor.At the design point with φ=0.62 and preheating temperature=400°C,NO emission and CO emission are 15.68 and 4.22 mg/m3(@15%O2). 相似文献