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四喷嘴气化工艺是目前煤化工生产的主流工艺,因其运行周期长、可靠性高,一直以来在煤化工领域占据着举足轻重的地位。气化炉是煤制氢、煤制合成氨、煤制甲醇、甲醇制烯烃等煤化工装置中重要的核心设备,其正常稳定运行直接关系到整个煤化工装置能否安全稳定运行。因此在实际生产中需要对其进行精心维护和管理。但在实际运行中,由于煤质变化引起的原料煤质量不稳定会对气化炉的正常运行造成影响,导致气化炉运行负荷波动,严重时甚至会造成系统停车。因此,对四喷嘴气化炉出现的问题进行了总结并提出了相应的防范措施。 相似文献
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四喷嘴对簧式新型气化炉运行初期,烧嘴在使用及拆装过程中出现烧嘴盘管损坏、喷头磨偏、烧蚀等现象,造成非计划停车,影响系统稳定运行。通过对烧嘴结构、材质、安装等方面进行了研究、改造,达到了延长烧嘴使用寿命的目的。 相似文献
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水煤浆气化炉锁斗循环泵进、出口管线在运行中因泄漏问题造成气化炉停车,针对泄漏问题进行分析,并提出改造措施,改造后的锁斗系统实现了长周期运行,目前气化炉负荷可以达到110%,且运行稳定。 相似文献
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本文结合多年的操作经验,对多喷嘴对置式气化炉带水现象的原因,以及气化炉带水对正常生产操作的影响进行了分析探讨,并提出了改进措施,为加强气化炉运行操作、促进和改善气化系统的安全、稳定、长周期运行提供参考。 相似文献
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文章分析总结气化炉运行过程中出现的3个典型温度异常故障,包括气化炉环形空间温度波动异常故障、A2内人孔烧穿故障、开工烧嘴膨胀节烧坏故障。通过对温度异常典型故障的分析和研究,保障了气化炉的安全运行,为后续同类故障的处理积累经验。 相似文献
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乙烯酮(双乙烯酮)是十分重要的化工中间体,其下游产品较多。江苏某化工厂开发生产乙烯酮(双乙烯酮)下游产品三十多个,年生产规模三万多吨,是国内以乙烯酮(双乙烯酮)为中间体生产精细化学品的综合骨干企业。针对乙烯酮(双乙烯酮)下游产品废水特点,该厂结合企业实际,开展了产品优化,结构调整,清洁生产,资源循环利用,节水降耗等工作,从源头削减了污染物的生产。同时投资二千多万元新建预处理装置三套,6000m3/d废水生化处理装置一套,使全厂乙烯酮(双乙烯酮)下游产品的废水得到了有效的治理。 相似文献
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D. G. Gordeev L. F. Gudarenko M. V. Zhernokletov V. G. Kudel’kin M. A. Mochalov 《Combustion, Explosion, and Shock Waves》2008,44(2):177-189
A semi-empirical equation of state for metals is described. Its capabilities are demonstrated by the example of the equation
of state for aluminum. New experimental data are presented on the location of the isentrope of aluminum for unloading from
the state at p = 229.71 GPa on the shock adiabat to an aerogel (SiO2) of density 0.08 g/cm3.
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Translated from Fizika Goreniya i Vzryva, Vol. 44, No. 2, pp. 61–75, March–April, 2008. 相似文献
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Jorge Marcelo Romero Soledad Bustillo Hugo Enrique Ramirez Maisuls Nelly Lidia Jorge Manuel Eduardo Gómez Vara Eduardo Alberto Castro Alicia H. Jubert 《International journal of molecular sciences》2007,8(7):688-694
A thermochemical rather simple experimental technique is applied to determine the enthalpy of formation of Diperoxide of ciclohexanone. The study is complemented with suitable theoretical calculations at the semiempirical and ab initio levels. A particular satisfactory agreement between both ways is found for the ab initio calculation at the 6–311G basis This set level. Some possible extensions of the present procedure are pointed out. 相似文献
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A perturbation viscometer is a differential capillary viscometer that measures the logarithmic viscosity gradient of the viscosity-composition curve for gas mixtures. Measurements are made at different gas mixture compositions. Integration of the logarithmic viscosity gradients measured over the full composition range gives the mixture viscosity relative to the viscosity of one of the pure components of the gas mixture. This method is attractive because, for measurements of equal precision, integration of the gradients is potentially an order of magnitude more precise than measurement of the viscosities directly. It can also work at high and low temperatures and perhaps high pressures.The perturbation viscometer has been used to make measurements on ideal gas mixtures at ambient and elevated temperatures. The situation is more complicated when the gas mixtures are non-ideal. Extra effects due to density differences, molar volume change on mixing and differential thermal expansion may be measured in addition to the desired viscosity change producing systematic errors in the results. Thus, a more sophisticated apparatus is required. The standard perturbation viscometer has been modified to separate out the extra effects to permit measurement of the true change in viscosity. In addition, the theoretical operation of the modified apparatus has been revised to account for the design changes to permit calculation of the viscosity-composition profiles from the results.The apparatus has been tested using helium-HFC-125 mixtures and two new viscosity-composition profiles are presented for these mixtures at 23 and . Internal consistency tests have been used to confirm that the data produced are of high quality with an estimated uncertainty in the viscosity ratio data at of 0.9% and at of 1.5%. 相似文献
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塔设备改造选型的分析 总被引:2,自引:0,他引:2
就当前扩产增容中塔设备设计和改造时板式塔和填料塔的选型问题加以分析。在评述目前国内常用的几种塔板和新型填料之后,着重介绍一种新型塔板(导向梯形浮阀塔板)和一种新型填料(波环填料——乾隆帕克)。 相似文献