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李守强 《中国石油和化工标准与质量》2011,31(8)
首先对煤间接液化技术进行了概述,分析了国内外煤间接液化技术的开发现状,并对煤间接液化技术的经济性进行了研究,最后对煤间接液化技术的工业前景进行了展望。 相似文献
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煤间接液化技术的现状及工业应用前景 总被引:2,自引:2,他引:2
张结喜 《化学工业与工程技术》2006,27(1):56-60
介绍了煤间接液化技术的发展历程,详细阐述了当前间接液化技术的现状,并分析其工业化前景。 相似文献
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刘向娟 《中国石油和化工标准与质量》2013,(14):103
煤炭是我国重要的基础能源之一,它占据了我国能源结构中的绝大部分。因此,实现煤炭的洁净利用、经济利用、合理利用和高效利用是煤炭行业的必然发展趋势,煤液化技术在煤炭行业中的广泛应用具有重大的战略意义和现实意义。本文通过对煤间接液化技术中的核心技术——费托合成反应原理的介绍,对我国煤间接液化技术的开发现状进行了分析,并论述了其发展前景。 相似文献
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分析了煤液化技术在我国经济发展中的战略性意义,介绍了煤液化技术,包括直接液化技术,间接液化技术,展望了我国煤液化技术的发展方向并提出了建议。 相似文献
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煤间接液化技术及发展前景 总被引:2,自引:0,他引:2
分析了我国的能源结构,介绍了我国煤炭液化技术的发展概况和国外煤炭间接液化技术的现状,展望了煤间接液化技术的发展前景,指出石油短缺是中国能源发展面临的重要问题,将发展煤液化技术和建设煤液化产业作为补充石油不足的重要途径之一。 相似文献
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综述了费托合成制低碳烯烃铁基催化剂方面所取得的研究进展,重点介绍了催化剂活性相、助剂和载体等方面的关键因素,探讨了催化剂制备条件对合成气制烯烃的影响,最后对费托合成直接法制烯烃的研究提出了一些展望。 相似文献
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为降低费托合成钴催化剂成本,提高费托合成钴催化剂的稳定性和寿命,分析了费托合成钴催化剂的失活与再生机理,论述了费托合成钴催化剂的再生方法。结果表明,中毒、烧结长大、积碳、氧化及固相反应是造成费托合成钴催化剂失活的主要原因。通过净化原料气、调节钴与载体相互作用、调整催化剂配方及工艺条件、控制钴颗粒尺寸及体系中水和H2的分压比等措施可以提高催化剂稳定性和寿命。通过脱蜡、氧化、还原可实现催化剂再生,氧化是再生的关键步骤,要注意氧化过程中升温速率、热量移除等问题;多次的氧化和还原过程可增加再生催化剂中金属钴与还原助剂的均匀性,提高再生催化剂的活性。 相似文献
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费托合成催化剂的研究进展 总被引:1,自引:0,他引:1
介绍了费托合成的研究现状,分析了费托合成催化剂的组成,重点评述了恬性组分、载体、助剂等因素在催化剂制备过程中对催化剂的活性、选择性等方面的影响,并对费托合成催化剂研究领域存在的问题进行了探讨。 相似文献
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Reaction pathways for 14C labeled acetic acid (at both carboxylic and methyl positions) added during Fischer-Tropsch synthesis over a doubly promoted
fused iron catalysts were studied in a CSTR at 100 psig, 270 °C and ca. 90% CO conversion. The addition of acetic acid slightly
affected the CO conversion but results in a significant reduction in H2 conversion. Both the unlabeled and labeled acetic acid addition caused a large decrease in the alkene ratio for C2 hydrocarbons as compared to an increase for the C3 and C4 hydrocarbons suggesting a direct formation pathway of ethane from added acetic acid. The 1-alkene/2-alkene fraction was found
to increase significantly when acetic acid was added and returned to the original value once the addition is terminated, indicating
inhibition of hydrogenation activity of the catalyst by acetic acid. Distribution of 14C suggests some C–C bond rupture and direct formation of ethane from labeled acetic acid. In the case of 1-14C labeled acetic acid addition, the gradual increase of the relative molar activity (14C content per mole) with carbon number reveals that 14C containing part of acetic acid initiate chain growth and also participates in the chain propagation for hydrocarbon formation
in FTS. When acetic acid labeled at methyl position was added, the results indicated that 14C containing part of acetic acid participates in chain initiation only. The addition of acetic acid decreases methane and
methanol selectivity while it increases ethanol, acetaldehyde and acetone selectivity in FTS. Reaction of acetic acid during
FTS was found to produce products like ethyl butanoate, ethylene glycol, and its ether, 1,2-diethoxyethane which are not generally
observed in the normal FTS product spectrum. The results indicate that acetic acid is not a significant intermediate in FTS
with an iron catalyst. 14C-distribution in most of the labeled oxygenate compounds are consistent with the hydrogenation of the acetic acid to acetaldehyde
and/or ethanol as primary products followed by secondary reaction of these two primary oxygenate products. 相似文献
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Bjørn Christian Enger 《Catalysis Reviews》2013,55(4):437-488
Nickel has been reviewed as a catalyst and promoter in the Fischer-Tropsch synthesis (FTS). The main obstacle to its industrial application is the formation of volatile carbonyls, causing deactivation and loss of active phase, as well as a somewhat lighter product than from Co or Fe catalysts. Presented are both experimental and theoretical work pointing to suitable techniques for catalyst preparation, its composition and activation, as well as operating conditions where Ni is capable of producing long chain hydrocarbons in the FTS. Some important perspectives are also provided based on thermodynamic calculations and suggestions for further work are included. 相似文献