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惠州炼油1200万吨/年常减压装置常减顶瓦斯在加热炉燃烧导致加热炉效率、环保、安全等方面受到影响,所以设计常减顶瓦斯回收压缩机,将常减顶瓦斯回收并送至催化,通过其干气送出。该压缩机一次投用成功,并解决加热炉环保和安全方面的问题。 相似文献
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介绍了中国石化股份公司西安石化分公司2#常减压蒸馏装置三顶瓦斯回收系统的运行情况,针对系统运行过程出现的问题,提出了解决思路和改造方案,总结了运行经验. 相似文献
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介绍了俄罗斯原油的一般性质及目前国内首套加工俄罗斯原油的5.50 Mt/a常减压装置的主要工艺路线和新技术特点,并针对俄罗斯原油性质和本常减压装置的设计特点,重点对运行中存在的问题和采取的对策及建议进行了分析讨论,如装置对加工原油的适应性问题、加工俄罗斯原油的三塔顶瓦斯气回收问题等,为国内大量加工俄罗斯原油及相应常减压装置的设计提供了良好的借鉴经验. 相似文献
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海南炼化800万吨/年常减压蒸馏装置原设计减顶瓦斯经过分液后进减压炉燃烧,造成环境的污染。2010年进行了技术改造,增上水环压缩机,经压缩后进入到轻烃回收系统统一处理。通过减压塔塔顶瓦斯增上水环压缩机的应用,产生了一定的经济和环保价值。 相似文献
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文章介绍了中海石油炼化有限责任公司惠州炼化分公司常减压装置低压瓦斯回收系统的概况、装置所解决的生产问题、瓦斯回收系统的运行状况及目前仍存在的问题。对于压缩机长期运行产生的腐蚀问题进行了分析,并提出相应的解决措施。为装置长周期运行提供保障。 相似文献
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为满足中国石化股份有限公司天津分公司100万t/a乙烯及配套项目,2008年对250万t/a常减压装置进行了适应性的改造,其中为考虑到环保及降低加工损失的要求,常减压装置低压瓦斯系统增设了压缩设施,即采用了上海压缩机厂生产LG-7.3/3.5螺杆压缩机及配套设施,将常减压装置初、 相似文献
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文章通过分析扬子石化炼油厂2#常减压装置改造前减压深拔的现状,指出影响减压拔出率的主要因素是减压系统抽真空能力及塔顶冷凝冷却负荷不足;经过2012年的扩容改造,对一级减压系统和二级减压系统进行了扩容,更新和改造。扩容改造完成后,减压塔顶残压得到明显改善,一减顶从20 KPa下降至3 KPa左右、二减顶从3 KPa下降至1 kPa以下,渣油500℃前馏分含量下降至3%,渣油产量减少了50.4kt/a,提高了经济效益。 相似文献
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介绍了金陵石化公司Ⅱ套常减压装置在2012年9月技术改造中,采用了余热回收系统、燃烧器升级更换、喷涂耐火纤维衬里及优化换热流程等措施,2012年11月改造后炉效同比提高了4%,超过了预期的改造效果。 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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The objective of the study was to explore the effect of the degree of deacetylation (DD) of the chitosan used on the degradation rate and rate constant during ultrasonic degradation. Chitin was extracted from red shrimp process waste. Four different DD chitosans were prepared from chitin by alkali deacetylation. Those chitosans were degraded by ultrasonic radiation to different molecular weights. Changes of the molecular weight were determined by light scattering, and data of molecular weight changes were used to calculate the degradation rate and rate constant. The results were as follows: The molecular weight of chitosans decreased with an increasing ultrasonication time. The curves of the molecular weight versus the ultrasonication time were broken at 1‐h treatment. The degradation rate and rate constant of sonolysis decreased with an increasing ultrasonication time. This may be because the chances of being attacked by the cavitation energy increased with an increasing molecular weight species and may be because smaller molecular weight species have shorter relaxation times and, thus, can alleviate the sonication stress easier. However, the degradation rate and rate constant of sonolysis increased with an increasing DD of the chitosan used. This may be because the flexibilitier molecules of higher DD chitosans are more susceptible to the shear force of elongation flow generated by the cavitation field or due to the bond energy difference of acetamido and β‐1,4‐glucoside linkage or hydrogen bonds. Breakage of the β‐1,4‐glucoside linkage will result in lower molecular weight and an increasing reaction rate and rate constant. © 2003 Wiley Periodicals, Inc. J Appl Polym Sci 90: 3526–3531, 2003 相似文献