Tech-economic assessment of a coproduction system integrated with lignite pyrolysis and Fischer-Tropsch synthesis to produce liquid fuels and electricity
Tech-economic assessment of a coproduction system integrated with lignite pyrolysis and Fischer-Tropsch synthesis to produce liquid fuels and electricity
复制标题
结合褐煤热解和费托合成生产液体燃料和电力的联产系统的技术经济评估
DOI：
10.1016/j.fuproc.2015.01.026
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发表时间：
2015
影响因子：
7.5
通讯作者：
Li Wenying
中科院分区：
文献类型：
--
作者：
Fan Yang;Yi Qun;Li Fangzhou;Yi Lan;Li Wenying
提出了一种将褐煤热解与费托合成和煤焦油加氢相结合的新型联产系统，以生产液体燃料和化学品。褐煤的含水量、采用的气化炉以及发电方式的选择是对系统评估产生很大影响的关键因素。研究了不同水分含量和气化炉类型的敏感性分析，并对有发电和无发电的过程进行了比较。结果表明，该系统可以从原料水分含量的降低中获益匪浅，虽然需要较高的资金投入，但基于壳牌气化炉的工艺会产生更多的液体。此外，应用发电系统将提高经济绩效并对能源效率产生影响。经能源经济评估，年处理500万吨褐煤规模，最好情况下可获得近40%的低位热值和15%以上的内部收益率。同时，获得超过 50 万吨液体，二氧化碳排放量在 7.5-9.5 吨/吨油的范围内。
A novel coproduction system of lignite pyrolysis integrated with Fischer–Tropsch synthesis and coal-tar hydrogenation to produce liquid fuels and chemicals is proposed. The moisture content of the lignite, the gasifier adopted and the choice of electricity generation are the critical factors that make a big difference in the assessment of the system. Sensitivity analysis of different moisture contents and gasifier types are investigated and comparisons are done between processes with and without electricity generation. The results showed that the system could benefit a lot from the decrease of moisture content of feedstock, and that although requiring higher financial investment, Shell-gasifier-based process would produce more liquid. Moreover, applying the electricity generation system would enhance the economic performance and make an impact on the energy efficiency. By the energy and economic assessments, nearly 40% of the low heat value and over 15% of the internal rate of return in the best case are obtained at an annual handling scale of 5 million tons of lignite. Meanwhile, over half a million tons of liquid are obtained and the CO2emission is within the range of 7.5–9.5 t/t-oil.