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单一电解质对黑泥粘土-水系统流动性的影响 总被引:2,自引:1,他引:2
研究单一电解质三聚磷酸钠、六偏磷酸钠、腐殖酸钠、复合减水剂和羧甲基纤维素钠对黑泥粘土—水系统流动性的影响,确定了分别加入单一电解质六偏磷酸钠和三聚磷酸钠且加入量分别为0.15%~0.30%和0.3%~0.4%时,黑泥粘土—水系统具有较好的流动性。 相似文献
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以某建筑陶瓷配方料为研究对象,加入市售陶瓷减水剂五水偏硅酸钠、三聚磷酸钠以及低分子有机陶瓷减水剂腐植酸钠,并对所述陶瓷减水剂进行复配,通过对泥浆的流动性、比重、含水率、ζ电位、及触变性的测定,评价陶瓷减水剂及其复配对陶瓷配方土的减水效果。研究发现,单一陶瓷减水剂五水偏硅酸钠、三聚磷酸钠、腐植酸钠加入陶瓷配方土后,泥浆的性能不佳。但复配后的陶瓷减水剂可以使泥浆的性能提高,达到建筑陶瓷生产需求。当0.3%五水偏硅酸钠和0.1%腐植酸钠复配时,流速为34 s,触变性为1.029;当0.5%五水偏硅酸钠和0.15%的三聚磷酸钠复配时,流速为52 s,触变性为1.019;当0.1%三聚磷酸钠,0.3%五水偏硅酸钠和0.2%腐植酸钠复配时,流速达到44s,触变性为1.023。 相似文献
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通过测定粉体Zeta电位、酸碱性和对分散剂PAA的吸附,探讨了TiC-Ni水系浆料的共悬浮。TiC粉体是酸性,等电点在PH值2.5处,并在PH值为9.5处出现Zeta电位最大值。TiC的Zeta电位随PAA浓度的增加而增加,并且对应于TiC对PAA的饱和吸附,Zeta电位增加到最大值,达到饱和吸附后,继续增加PAA的浓度反而导致Zeta电位的减小。Ni粉体呈碱性,通过理论分析,其等电点应在碱性区。当PAA的加入量为0.3wt%、pH值为6.5时单组分TiC浆料稳定,TiC-Ni浆料相对失稳;当PAA的加入量为0.2wt%、pH值为8.5时,TiC-Ni浆料稳定,并且沉降后的组分均一。 相似文献
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对6种常用钻井泥浆处理剂与泥浆COD值的关系进行了模拟研究,6种处理剂对钻井泥浆COD值的影响顺序为磺化酚醛树脂(SMP)>铵盐(NH4-HPAN)>无荧光防塌剂(GLA)>硅稳定剂(SSA)>复合离子型聚丙烯酸盐(PAC-141)>水解聚丙烯腈钾盐(FPK). 利用得到的回归方程式对冀东油田的3种主要钻井泥浆体系废水的COD值进行了估算,考虑稀释倍数之后的估算结果与实测值基本符合,证明泥浆处理剂是钻井废水COD的主要来源. 对利用实际废水配制的各种处理剂模拟废水的混凝处理效果实验证明,当混合体系Zeta电位大于-50 mV时,混凝后残留TOC值高于预测值;相反当混合体系的Zeta电位小于-50 mV时,混凝后残留TOC值低于预测值,Zeta电位越小,TOC去除率越高. 6种处理剂中,SMP的Zeta电位值最高,因此其TOC去除效果也最差. 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