煤辅助油页岩高效热解过程热力学和经济分析
Thermal and Economic Analyses of Coal-Assisted Oil Shale for High Efficient Pyrolysis Process
摘要: 为了提高油页岩的热解干馏效率，本文提出了煤辅助油页岩高效热解方案。煤经气化，产生的合成气经燃烧释放热量用于油页岩的热解干馏。本文首先对新方案进行了模拟，在此基础上，分析了整个过程的技术经济性能，并与已有的抚顺式油页岩炼制进程进行对比。研究结果表明：1) 干馏375 t/h的油页岩需要149.6 MW的热量，其中油页岩热解后所产生的干馏气经过全部循环燃烧后为其提供了60%的热量，通过煤气化合成气燃烧提供了剩余40%的热量。2) 与抚顺式炼制过程相比，采用新过程生产单位页岩油其成本为2636元/t，降低了12%。3) 油价目前稳定在50 $/bbl附近，新炼制过程的经济竞争力原油售价51 $/bbl，相比抚顺式炼制过程的58 $/bbl具有更明显的经济竞争力和经济优势。
Abstract: In order to improve pyrolysis efficiency of oil shale, a high-efficiency scheme of coal-assisted oil shale pyrolysis is proposed. Syngas produced by coal gasification is burned to provide heat for the pyrolysis of oil shale. The new scheme is modelled and simulated in our work. On this basis, the technical and economic performance of the whole process is analyzed; then a comparison is made between the new process and the existing Fushun-type oil shale pyrolysis process. The research results indicate that: 1) 375 t/h oil shale pyrolysis needs 149.6 MW of heat. The pyrolysis gas generated by the pyrolysis of the oil shale provides 60% of the heat after being combusted completely. The remaining 40% is provided by burning syngas from coal gasification. 2) In terms of economic performance, the product cost of the new process is 2636 CNY/t, which is 12% lower than that of the conventional process. 3) The current oil price is stable around 50 $/bbl, and the price of crude oil from the economical competitiveness of new pyrolysis process is 51 $/bbl. Compared with the 58 $/bbl of the conventional Fushun pyrolysis process, it has obvious economic competitiveness.
文章引用：蒋清梅, 廖明佳, 宋春雨, 姜思维. 煤辅助油页岩高效热解过程热力学和经济分析[J]. 化学工程与技术, 2021, 11(3): 170-177. https://doi.org/10.12677/HJCET.2021.113024

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