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21世纪洁净煤气化技术发展综述 总被引:4,自引:0,他引:4
论述了美国洁净煤技术框架和中国洁净煤技术发展纲要,介绍了洁净煤气化技术发展过程和Shell粉煤气化技术的特点。从洁净煤气化得到的合成气用于制合成氨、甲醇、氢气、甲醇燃料、二甲醚燃料,以及用于发电等方面论述了洁净煤气化技术的工业应用。 相似文献
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Hyun-Min Shim Su-Yong Jung Hong Yue Wang Hyung-Taek Kim 《Korean Journal of Chemical Engineering》2009,26(2):324-331
Gasification technology, which converts fossil fuels into either combustible gas or synthesis gas (syngas) for subsequent
utilization, offers the potential of both clean power and chemicals. Especially, IGCC is recognized as next power generation
technology which can replace conventional coal power plants in the near future. It produces not only power but also chemical
energy sources such as H2, DME and other chemicals with simultaneous reduction of CO2. This study is focused on the determination of operating conditions for a 300 MW scale IGCC plant with various feedstocks
through ASPEN plus simulator. The input materials of gasification are chosen as 4 representative cases of pulverized dry coal
(Illinois#6), coal water slurry, bunker-C and naphtha. The gasifier model reflects on the reactivity among the components
of syngas in the gasification process through the comparison of syngas composition from a real gasifier. For evaluating the
performance of a gasification plant from developed models, simulation results were compared with a real commercial plant through
approximation of relative error between real operating data and simulation results. The results were then checked for operating
characteristics of each unit process such as gasification, ash removal, acid gas (CO2, H2S) removal and power islands. To evaluate the performance of the developed model, evaluated parameters are chosen as cold
gas efficiency and carbon conversion for the gasifier, power output and efficiency of combined cycle. According to simulation
results, pulverized dry coal which has 40.93% of plant net efficiency has relatively superiority over the other cases such
as 33.45% of coal water slurry, 35.43% of bunker-C and 30.81% of naphtha for generating power in the range of equivalent 300
MW. 相似文献
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介绍了以煤、油田气和渣油为原料联合生产甲醇的工艺流程及其特点。水煤浆气化有效气的n(H2)/n(CO)为0.4-0.5,天然一段蒸汽气转化有效气的n(H2)/n(CO)为2.7~3.0,根据H、C元素互补理论.联合生产甲醇工艺将水煤浆气化副产多余的CO、天然气转化过剩的H2和渣油催化裂解时副产的干气(分离回收的部分H2)3者结合使合成气中的生产甲醇的合成气【n(H2)-n(CO2)]/[n(CO)+n(CO2)]达到2.05-2.15,达到“氢碳互补”,从而实现节能减排目的。 相似文献
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建立了集成费托合成与碳还原反应系统的模型,采用Aspen软件进行仿真分析和计算,重点分析碳气化反应过程及费托合成的产物分布。在煤气化联合循环发电系统中集成该模块,CO2与焦炭发生还原反应得到CO,与来自煤气化单元的H2在费托合成反应器里合成液体燃料,未反应完的合成气用于燃气轮机联合循环发电。针对碳还原反应器和费托合成反应器两部分进行了模拟分析,研究了反应条件对产物的影响。分析结果表明回收CO2制取具有高附加值的液体燃料是CO2再利用的一条有效途径。 相似文献