生物质加入煤中进行共热解，对节约煤炭资源，保护环境和促进煤热解反应进行有十分重要的意义。本论文采用热重分析法研究了煤、生物质的单独热解过程和共热解过程，探讨了影响煤和生物质热解的影响因素；采用Coats-Redlfern方法得到了共热解过程的动力学参数；另外通过常压管式反应器热解装置对热解产生的气体和固体产物进行了分析。 主要工作如下： (1) 利用热重分析法研究了煤、生物质的单独热解过程和共热解过程，考察了生物质种类、煤炭种类和生物质添加比例对煤和生物质共热解的影响。煤和生物质的热解过程都有3个阶段：第一阶段为干燥脱除阶段（＜200 ℃）；第二阶段为脱挥发分阶段（生物质200~400 ℃、煤400~ 650℃）；第三阶段为炭化阶段（生物质＞400 ℃、煤＞650 ℃）。通过比较煤热解和生物质热解，我们发现生物质失重率急剧增大，且生物质总失重率明显高于煤，这与两物质的化学结构有关。生物质各成分通过作用力相对较弱的醚键结合，而煤主要是通过碳原子连接，需要在较高的温度下才能断裂，因此煤热解温度高出生物质许多。煤与生物质混合物的DTG曲线上有三个峰，分别对应热解三段明显失重区域：第一个峰处于样品干燥脱吸阶段，第二个峰处于样品中生物质主要热解阶段，第三个峰处于样品中煤主要热解阶段。通过分析煤和生物质共热解特性，我们发现煤和生物质混合后生物质挥发分析出最大速率处温度有所提高，而煤挥发分析出最大速率处温度降低；另外，混合物中煤挥发分析出最大速率实验值普遍大于理论值。煤和生物质混合物热重反应第三阶段中挥发分产量实验值都大于煤热解理论值。由此推测出生物质可以明显增加煤热解主要阶段的挥发分产量，且混合比例越大，增大的幅度越大。 (2) 采用Coats-Redlfern方法得到了共热解过程的动力学参数。经计算煤热解反应为三级反应，生物质热解反应为一级反应。鹤岗、黄陵、鲍店煤的主要热解阶段的活化能比两种生物质的活化能都大，分别为77.5 kJ•mol-1、77.6 kJ•mol-1、64.3 kJ•mol-1，稳定性比较强。大南湖煤的主要阶段的活化能比两种生物质的活化能都小，稳定性较弱。对于鹤岗、黄陵、鲍店煤，生物质掺混煤中后，生物质热解主要阶段的表观活化能比生物质单独热解有所降低，而且煤热解主要阶段的表观活化能比煤单独热解也有所降低，且生物质比例越大，表观活化能降低幅度越大。由此我们推测出生物质可以明显催化煤热解主要阶段处的反应，且掺混比例越大，催化作用越明显。而对于大南湖煤，生物质低比例下共混物第三阶段活化能比煤热解大，高比例下才比煤单独热解小。由此我们推测出生物质只有在较大掺混比例下才对大南湖煤热解主要阶段处的反应有催化作用，低比例下反而对之有阻碍作用。 (3) 通过常压管式反应器热解装置对热解产生的气体和固体产物进行了分析。大南湖煤热解释放的CO2、CO、C2-C4、CH4气体随温度上升，产量是逐渐增加的，在600 ℃左右出现最大值，然后逐渐减少。而加入玉米秸秆后，CO2、CO气体产量明显比大南湖煤产量大，总产量分别增加了2倍和1倍。这主要是由于生物质中-OH基与有机质发生了反应。大南湖煤热解释放的H2气体随温度上升，产量逐渐增加，在800 ℃左右才出现最大值，而后随着热解时间的延长产量降低。而加入玉米秸秆后，氢气总产量增加了204.72 dm3/g。甲烷产量减少了2/5，C2-C4脂肪烃气体产量增加了1倍。热解后固相产物中碳含量为共混物的59 %，氢含量为共混物的17 %，N含量为共混物的65.6 %，所以共混物中的碳主要集中在固相产物中，而H因参与了气体反应损失较多，而N得到了部分去除。

It is very significant to save coal resources, protect the environment and promote the coal pyrolysis reaction after biomass is added to coal pyrolysis. This paper studies coal pyrolysis processes, biomass pyrolysis processes and coal/biomass blends co-pyrolysis processes by thermal gravimetric analysis, discussing the factors affecting coal/biomass pyrolysis. Kinetic parameters of coal/biomass blends are all obtained by Coats-Redlfern method. In addition, gases and solid residues produced from coal/biomass blends co-pyrolysis by atmospheric pressure tubular reactor are analyzed. The main researches are as follows: (1) Coal pyrolysis processes, biomass pyrolysis process and coal/biomass blends co-pyrolysis process were studied by thermal gravimetric analysis, discussing the factors such as coal types, biomass types and biomass ratios affecting coal/biomass pyrolysis There are three stages in coal pyrolysis process and biomass pyrolysis process. The first stage is dring desorption (＜200 ℃), The second stage is devolatilization (biomass 200~400 ℃, coal 400~650 ℃), The third stage is carbonization (biomass> 400 ℃, coal> 650 ℃). Compare with coal pyrolysis, the rate of biomass devolatilization increases rapidly and total weight loss of biomass was higher than coal, these differences are due to their different chemical structure. Biomass components combine together through a relatively weak ether bond, while the coal components is mainly connected through a carbon atom, it only can be broken at higher temperature, thus temperature of coal main pyrolysis stage is higher than that of biomass. There are three peaks in co-pyrolysis DTG curves corresponding to three distinct weight loss regions. The first peak shows evaporation of water, the second peak reflects the pyrolysis of biomass in co-pyrolysis, and the third peak suggests the pyrolysis of coal in co-pyrolysis. After biomass is added to coal, the temperature of biomass maximum devolatilization rate increases, while the temperature of coal maximum devolatilization rate decreases. Experiment values of coal maximum devolatilization rate are generally greater than the theoretical values. Volatiles yields of coal/biomass blends co-pyrolysis in Stage Ⅲ are more than theoretical values too. So it infers that biomass can significantly increase volatiles yields of coal main pyrolysis stage, and the greater the biomass ratio, the greater the volatiles yields. (2) Kinetic parameters of coal/biomass blends are all obtained by Coats-Redlfern method. Coal pyrolysis processes are third-order reaction and biomass pyrolysis processes are first-order reaction. The main pyrolysis stage activation energies of HG, HL, BD coal are 77.5 kJ•mol-1, 77.6 kJ•mol-1, 64.3 kJ•mol-1 respectively, and are all greater than those of the two biomasses. The main pyrolysis stage activation energies of coal is the smallest. After biomass is added to coal, the activation energy of biomass main pyrolysis stage increases, while the activation energy of coal main pyrolysis stage decreases, and the greater the biomass ratio, the lower the apparent activation energy. It infers that biomass can significantly catalyze coal pyrolysis at the main stage, and the greater the blending ratio, the more obvious catalysis. For DN coal, the activation energy of coal pyrolysis of coal/biomass blends with low biomass ratio in Stage Ⅲ is larger than that of coal pyrolysis, while in larger biomass raio, it can be lower. Thus, it infers that biomass with larger ratio can significantly catalyze DN coal pyrolysis at the main stage, and biomass with low ratio could hinder coal pyrolysis. (3) Gases and solid residues produced from coal/biomass blends co-pyrolysis by atmospheric pressure tubular reactor are analyzed. The yields of gas produced such as CO2, CO, C2-C4, CH4 is gradually increasing as the temperature increases, the maximum value occurs at about 600 ℃. And after adding corn straw, CO2, CO gas yields are significantly larger than those of DN coal, total yields increase by 2 and 1 times. This is mainly due to -OH groups of biomass react with organic matter. Besides, the C2-C4 yield is twice more than that of DN coal pyrolysis and the CH4 production from blends pyrolysis is just three fifth of that from DN coal pyrolysis. The H2 yield is gradually increasing as the temperature increases, the maximum value occurs at about 800 ℃. The H2 can be acquired effectively as its yield is almost 204.72 dm3 more than that of DN coal pyrolysis. The carbon content, the hydrogen content, nitrogen content from residue are 59 %, 17 %, 65.6 % of those from the blends respectively, so the carbon mainly concentrates in the residue, hydrogen decreases a lot and nitrogen is partly removed.