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加强化工燃料气生产平衡与优化工作,有利于提高化工企业的经济效益,有利于降低物料损耗,最终实现装置的稳定、安全运行。首先针对某化工企业的化工燃料气管网运行情况,深入探讨了化工燃料气生产平衡与优化措施,其中包括生产平衡管理、原料优化、资源配置优化等,具有一定的参考价值。 相似文献
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根据燃料气系统运行现状,提出了两个燃料气系统优化方案,以解决目前燃料气系统无法完全满足下游生产装置需要、排放量过大的问题,达到减少燃料气排放、提高能源利用率、降低企业运行成本的目的。并对两个优化方案进行物料衡算和经济效益核算,分别验证两个方案的可行性和经济性。通过对比两种方案,得出方案一(对现有燃料气管网进行改造,将含烯烃、甲醇较多的燃料气单独送至动力装置,并对现有PSA氢回收装置进行扩能改造,使回收气量达23778.4m3/h)优于方案二(维持PSA氢回收装置目前运行状态,增加一套尾气回收装置回收甲醇弛放气中的CO、H2,使燃料气系统达到物料平衡)。方案一具有可行性高、投资小、操作维护方便、经济效益高的优点,是两种优化方案中的最佳选择。 相似文献
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炼厂气平衡一直是炼油企业亟待解决的难点。炼厂燃料气系统的无序排放和凭经验调度,使得一些高价值组分作为燃料烧掉,不利于炼厂节能减排。为解决这一问题,对装置排放管网的多相流水力计算及管网计算,确定炼厂气在管网中的状态,利用专利软件技术对炼厂燃料气系统进行“调度”,可以很好解决炼厂的瓦斯排放问题。同时提出炼厂实施这一系统的方案。 相似文献
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燃料气系统是炼化企业重要的工艺系统,燃料气平衡对炼化企业装置平稳运行有着重要作用[1].在不断深入开展节能减排的大背景下,某大型炼化企业实际运行工况与设计工况发生明显变化,干气组分趋向于更轻、更杂,这为燃料气系统的平稳运行带来较大难度[2].文章通过对燃料气系统部分流程优化改造,稳定燃料气系统压力,降低液化石油气的消耗... 相似文献
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伊犁新天煤化工有限责任公司20×108 m3/a煤制天然气装置满负荷生产时,3台煤粉锅炉、2台发电机组、空分装置双系列、化工主装置双系列运行;当空分装置单系列停车(跳车)时,为避免化工主装置单系列运行的一系列不利影响,新天煤化近年来对空分装置单系列停车(跳车)后化工主装置双系列50%负荷运行模式进行了不断地摸索与探讨。介绍空分装置单系列停车(跳车)后仪表空气与装置空气气量调整、氮气管网平衡与调整、蒸汽管网平衡与调整,以及化工主装置气化系统、变换系统、低温甲醇洗系统、甲烷化系统、煤气水分离系统与酚回收系统等的操作调整及注意事项。实践表明,配套优化改进措施(增设1 000 m3液氮储罐、甲烷化系统双系列入口净化气增设联通管线等)后的空分装置单系列化工主装置双系列50%负荷生产时运行稳定,增加了化工主装置的抗风险能力与操作的灵活性,保障了煤制天然气装置的安全、稳定、优质运行。 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