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离子膜法替代石墨阳极隔膜法生产烧碱的经济效益分析 总被引:1,自引:1,他引:0
采用凯膜过滤精制一次盐水、螯合树脂塔精制二次盐水及复极电解槽等技术,用离子膜法烧碱生产工艺替代石墨阳极隔膜法烧碱生产工艺,具有产品质量好、纯度高、能耗低、污染小、操作灵活、安全可靠等优点。该4万t/a离子膜法烧碱生产装置固定资产投资为4000万元,投资回收期3.4年,每年销售收入比同等规模的石墨阳极隔膜法烧碱生产装置增加5052万元。 相似文献
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2005年前,中盐湖南株洲化工集团有限公司(以下简称“中盐株化”)烧碱厂仅有10万t/a隔膜法烧碱装置,2004—2007年又陆续上14万t/a离子膜法烧碱生产装置。目前,中盐株化烧碱厂的生产规模为隔膜法烧碱6万t/a、离子膜法烧碱14万t/a。随着生产规模的不断扩大和国家对环保治理的力度加大,自来水用量和相应的排污费上升,产品的生产成本大大增加。从2006年开始,中盐株化烧碱厂加大了节水装置的投入, 相似文献
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《氯碱工业》2005,(9)
氯碱生产能力超高速增长需引起行业的警惕2005年是近年来国内氯碱生产能力增长最快的一年,到8月份累计已有165.5万t/a新建、扩建的烧碱装置投产,而到年底预计还将有168.5万t/a装置投产,即全年将新增烧碱生产能力334.0万t/a。据全国氯碱工业信息中心对国内179家氯碱生产企业进行的统计,到2005年年底国内烧碱生产能力预计将达到1 605.1万t/a(其中,离子膜法烧碱生产能力将为788.7万t/a),而这其中还未包括部分隔膜法烧碱生产厂改用扩张阳极改性隔膜电解槽后增加的产能。已经投产和预计年底前投产的新建、扩建烧碱生产装置详细情况见表1、表2。表… 相似文献
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S. A. Zhdan 《Combustion, Explosion, and Shock Waves》2003,39(4):458-463
The problem of a detonation wave propagating in a cylindrical column of a chemically active bubbly medium screened by a liquid from the tube walls is formulated and numerically solved within the framework of the Iordanskii–Kogarko two-phase model with allowance for energy dissipation due to acoustic radiation of bubbles. The wave structure of the reaction zone and the detonation velocity of the bubbly medium column are calculated. It is found that the self-sustaining wave can propagate with a velocity greater than the velocity of one-dimensional bubble detonation by a factor of 1.5–2.5. 相似文献
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Unsteady extraction from a system of semi-infinite capillaries to the flow of a fluid with a linear velocity gradient is studied. An assumption that the diffusion in the flow is a quasi-steady-state process is taken to obtain a linear equation for the local mass flux from the pore space, which involves fractional derivatives with respect to time and flow coordinate. Limiting solutions for the total diffusion flux at small and large times that cover the entire time interval are found. 相似文献
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Diffusion of a gas through a membrane 总被引:1,自引:0,他引:1
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A. N. Pavlenko N. I. Pecherkin V. Yu. Chekhovich V. E. Zhukov S. Sunder P. Houghton A. F. Serov A. D. Nazarov 《Theoretical Foundations of Chemical Engineering》2006,40(4):329-338
A large-scale experimental setup is designed to study the hydrodynamic parameters and the mass-transfer efficiency in a countercurrent flow of mixtures of Freon R21 and Freon R114 on structured packings in a column 0.9 m in diameter. The study deals with the local and integral parameters of separation of the mixture, the degrees of nonuniformity of the flow rates and concentration distributions of the liquid and vapor phases over a cross section and on the column wall, and the pressure difference while varying the number of packing layers and their rotation angle. The mass-transfer processes while independently varying the liquid and vapor flow rates over wide ranges are also investigated. Experimental data are presented to illustrate the effect of the operating parameters on the height of an equivalent theoretical plate, the relative pressure difference, and the distributions of the local parameters of the flows. 相似文献
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Interaction of an incident shock wave (with a rectangular or triangular profile behind its front) with a finite-width semi-infinite cloud of aluminum particles located in a channel along the plane of symmetry is numerically simulated. Shock-wave interaction with the leading edge of the cloud results in the formation of a vortex that leads to cloud dispersion. Reflection of the curved shock wave from the plane of symmetry may be regular or may include the formation of the Mach stem. If the cloud is loaded by a rather strong shock wave, a detonation wave is formed in the cloud. In this case, the flow is periodic, which is caused by passing of transverse waves and their reflection from the walls. 相似文献
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Dashkov G. V. Solodukhin A. D. Stolovich N. N. Fisenko S. P. 《Theoretical Foundations of Chemical Engineering》2003,37(1):82-87
The transient outflow of a liquid from a perforated horizontal tube as a result of abruptly applied constant pressure is studied theoretically and experimentally. Equations and a computer program are developed for estimating the parameters of such transient processes. Retardation of the liquid outflow is observed, and its mechanism is discussed. 相似文献
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The problem of reflection of shock waves and expansion waves from a rigid wall in a mixture of liquid iron and small molybdenum
crystals is considered. The study is performed within the framework of equilibrium and nonequilibrium approximations of mechanics
of heterogeneous media with different pressures of the components. The mathematical model is verified by fitting the dependence
of the equilibrium-frozen velocity of sound on the initial pressure in the mixture with available experimental data. In the
equilibrium approach, the dependence of the type of the reflected wave on the type of the incident wave is determined. Direct
numerical calculations within the framework of the nonequilibrium model of mechanics of heterogeneous media confirmed the
validity of the reflection chart obtained. The possibility of significant compacting of molybdenum particles in reflected
waves is revealed.
Translated fromFizika Goreniya i Vzryva, Vol. 36, No. 4, pp. 97–107, July–August, 2000.
This work was performed within the framework of the Integration Project No. 97-24 of the Siberian Division of the Russian
Academy of Sciences. 相似文献