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Metal Modified 13X Molecular Sieve and Adsorption Dechlorination of Naphtha
Cui Shiqiang, Yan Feng, Shao Wenjun, Wang Xindong, Zhang Baihui
Abstract600)   HTML    PDF (1043KB)(281)      
MgO/13X,Fe2O3/13X and MgO⁃Fe2O3/13X were prepared by impregnation method using 13X molecular sieve as carrier and MgO and Fe2O3 as active components. The structure of the prepared adsorbent was analyzed by XRD,N2 adsorption⁃desorption,TG⁃DTA and other characterization techniques, and the dechlorination effect of the adsorbent on naphtha was investigated. The results show that the metal oxides such as MgO and Fe2O3 are uniformly supported on 13X,the specific surface area and pore size of the modified adsorbent are slightly increased,and the pore volume is decreased. By comparison,the dechlorination effect of MgO⁃Fe2O3/13X adsorbent is best. The optimum conditions were as follows:adsorption time 2 h,adsorption temperature 60 ℃, and ratio of solvent to oil 1∶40,the dechlorination rate was the highest,reaching 89%. The fitting results show that the adsorption process conforms to the quasi⁃secondary kinetic model,mainly the physical adsorption proces.
2020, 33 (2): 7-11. DOI: 10.3969/j.issn.1006-396X.2020.02.002
Influence of Nonionic Emulsifier on Stability of Cold Rolling Emulsion
TIAN Tian,YAN Feng,ZHU Jing,et al
Abstract467)      PDF (190KB)(341)      
In the process of producing cold-rolled sheet, the properties of rolling oil,such as lubrication,and emulsion stability are essential factors. This study selected pentaerythrite oleate and mineral from LiaoHe as the base oil. Then adding in diffrernt kinds of nonionic complex emulsifying agent, EP-antiwear additive, antirusting agent, foam suppressor and preservative to the water of 90%~95%, and emulsifying. This experiment used our current industry standard for the reasearch on emulsion stability. The results show that the stability of cold rolling emulsion of the esters and ethers nonionic emulsifier to the base oil is better than a single species of esters or ethers compound system; Final products meet requirements of the emulsion industry standard: After 24 h, 5% emulsion oil separating soap volume is 1.0 mL, 2% emulsion oil the bubbles are completely eliminated in 5 min.
2012, 25 (5): 10-12. DOI: 10.3969/j.issn.1006-396X.2012.05.003