生物质焦和煤粉CO2气化反应特性研究(2)

(3)The conversion of woody char and anthracite increased with the increase of gasification temperature and then achieves the maximum。 Conversion ratio of anthracite at 900℃、1000℃、1100℃ and 1200℃ reached 0。11、0。20、0。54 and 1。00 respectively。 Meanwhile, the conversion rate of woody char at 900℃ was 0。42 and the conversion rate has reached the maximum value at 1000℃。

(4)With the increase of mixing proportion of bituminous coal or anthracite in the mixture, the ending temperature of the gasification reaction is getting higher and higher。 At the same time, the maximum gasification rate was decreased and the curve is more and more close to the curve of single coal gasification。 Along with the reaction, the reaction rate increases with the increase of the conversion rate, but when the conversion rate reaches 0。9, the rate of the reaction rate decreases sharply。

(5)Coats-Redfern is employed to have an analysis on gasification reaction kinetics of woody char and bituminous coal and the activation energy of woody char and bituminous coal is 76。18 kJ/mol and 154。84 kJ/mol, respectively。 The co-gasification activation energy is smaller than separate gasification activation energy, indicating that biomass char blended with bituminous coal has a good effect on gasification。

Keywords: thermo gravimetric analyzer (TGA); biomass char; coal; gasification; characteristics

第一章绪论 1

1。1 研究背景和意义 1

1。2 生物质能 2

1。2。1 生物质能的定义 2

1。2。2 生物质能的利用 2

1。2。3 生物质能在钢铁生产中的利用 3

1。3 生物质焦气化和煤气化的研究现状 4

1。3。1 生物质气化 4

1。3。2 生物质焦气化研究现状 6

1。3。3 生物质和煤共气化研究现状 7

1。4 生物质和煤气化反应动力学研究 8

1。4。1 动力学模型研究 8

1。4。2 气化反应动力学研究现状 8

1。5 研究目的及内容 9

第二章气化反应实验 10

2。1 实验原料 10

2。2 实验设备 10

2。2。1 管式电阻炉 10

2。2。2 差热分析仪 11

2。3 分析测试设备 11

2。4 实验方案和实验内容 11

2。4。1 实验方案 12

2。4。2 实验内容 12

第三章生物质焦和煤粉气化反应特性研究 14

3。1 实验原料分析 14

3。1。1 无烟煤和烟煤工业分析 14

3。1。2 原料 SEM 图像及 EDS 能谱分析 14

3。2 气化特征参数生物质焦和煤粉CO2气化反应特性研究(2):http://www.youerw.com/huaxue/lunwen_98565.html