天然气燃烧器燃烧二甲醚(DME)的试验研究  

Experimental Study of a Natural Gas Burner Burning Dimethyl Ether Instead of Natural Gas

作　　者：苗闪闪[1] 卢啸风[1] 王泉海[1] 亢银虎[1] 

机构地区：[1]重庆大学低品位能源利用技术及系统教育部重点实验室,重庆400030

出　　处：《热能动力工程》2014年第1期92-96,111-112,共5页Journal of Engineering for Thermal Energy and Power

基　　金：教育部留学回国人员启动基金;高等学校博士学科点专项科研基金(20100191120017);江西省科技计划项目(20122BBG70087)

摘　　要：在一个清洁燃气燃烧试验平台上,对二甲醚的燃烧特性进行试验研究。通过测量炉内烟气的温度场及排放参数,炉胆的中心温度随着过量空气系数的变化而变化,α=1.3处温度达到最高;研究了在普通燃气燃烧器上燃用二甲醚的安全性和可行性。本研究还将燃气工业锅炉燃用二甲醚与燃用柴油、天然气的经济性进行了对比分析。研究表明,二甲醚相对于柴油、液化天然气等传统燃料,具有出色的燃烧性能和排放特性,以及较好的经济指标。同比天然气和柴油,二甲醚燃烧性能好,燃烧充分,热效率高,能量利用率高。二甲醚热值约为柴油的70%,而价格却是柴油的1/2。二甲醚同天然气对比,二者具有相同的优势。On a clean gas combustion test platform,an experimental study of the combustion characteristics of dimethyl ether burned in a natural gas burner was conducted. Through measuring the temperature field and emission parameters of flue gases in the furnace,the authors found that the temperature at the center of the furnace varies with the excess air ratio and hits its maximum value when α = 1. 3. Furthermore,the safety and feasibility of dimethyl ether burned in a common gas burner were also studied and the cost-effectiveness of burning dimethyl ether,diesel oil and natural gas in a gas-fired industrial boiler were contrasted and analyzed. It has been found that compared with diesel oil and liquefied natural gas etc. traditional fuels,dimethyl ether is characterized by its excellent combustion performance and emissions characteristics besides its relatively good economic indexes. Compared with natural gas and diesel,dimethyl ether has a better combustion performance,more complete combustion,higher thermal efficiency and energy utilization rate. The heating value of dimethyl ether is 70% that of diesel while the price of former is 1 /2 that of the latter. Compared with natural gas,dimethyl ether has an identical leading edge.

关 键 词：二甲醚 天然气燃烧器 温度场 过量空气系数 燃烧性能 

分 类 号：TK223.23[动力工程及工程热物理—动力机械及工程]