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两种聚合硫酸铁生产工艺探讨 总被引:1,自引:0,他引:1
阐述了聚合硫酸铁的用途及净水原理。催化氧化法生产聚合硫酸铁是在催化剂(如亚硝酸钠、硝酸等)的作用下,利用空气或氧气将亚铁离子氧化为铁离子,经水解和聚合获得聚合硫酸铁。直接氧化法生产聚合硫酸铁是直接通过强氧化剂(如次氯酸钠、氯酸钠和过氧化氢等)将亚铁离子氧化为铁离子,经水解和聚合获得聚合硫酸铁。通过对两种聚合硫酸铁的生产工艺、过程控制、生产成本及优缺点等进行对比分析,得出直接氧化法生产工艺简单,反应速率快,生产周期短,对环境的污染小,有较好的环境和经济效益。 相似文献
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研究了在Fe2(SO4)3-H2SO4-NaCl体系中直接电解浸出黄铜矿精矿工艺条件及机理。实验表明,在阳极初始溶液含Fe^3+1mol/L,H2SO4 4mol/L,NaCl1.5mol/L,阴阳极电流密度分别为350和650A/m^2,温度368K的条件下浸出6h,可以获得铜浸出率为95%,精矿中的硫90%以上以单质硫回收。温度是影响铜浸出率最显著的因素,阳极上发生的主要反应是Fe^3+氧化;硫酸铁直接氧化黄铜矿得到单质硫;酸分解黄铜矿产生H2S,H2S溶解后再被Fe^3+氧化为硫。 相似文献
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用Fe^0—H2O2氧化法处理高浓度有机废液研究 总被引:7,自引:1,他引:6
提出了用于工业废水处理的Fe^0-H2O2氧化法,并用高浓度苯酚(5000mg/L)和甲酚(4000mg/L)进行实验,结果表明Fe^0-H2O2氧化法在330min后,DOC转化率达80%,中和后污泥产生量少,而传统Fenton氧化法,同等实验条件下,DOC转化率仅为60%,而且后者再提高转化率,中和时伴随大量污泥产生,因此认为Fe^0-H2O2氧化法优于Fenton氧化法。 相似文献
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本文详细论述了以硫酸铜为原料,经脱水干燥、通氢还原和部分氧化等工艺生产的Cu/Cu2O/CuO催化剂的制备方法,以及将该催化剂用于20mm和300mm流化床反应器直接法合成甲基氯硅烷的实验评价过程。实验结果表明该催化剂与传统的CuCl催化剂相比具有更高的反应活性和选择性,各项技术指标均达到美国SCM公司同类产品的实验数据 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