共查询到18条相似文献,搜索用时 62 毫秒
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对乳化蜡的配方及乳化工艺条件进行了研究,当石蜡质量分数为10%~20%、氧化石蜡质量分数为3%,采用复合乳化剂硬脂酸与三乙醇胺(其质量比为5∶2,用量为7%),在85℃、800~1000r/min的条件下乳化20~30min可制得稳定性高、分散性好的乳化蜡。以此乳化蜡为原料,采用复合防锈剂,当防锈剂A与防锈剂C质量比为3∶1、加入量为6%时,可制得pH值为8~8.5、氨味小、半透明的防锈蜡,其主要性能与国外先进同类产品指标接近。 相似文献
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采用58#固体石蜡作为主要原料,研究了水性车用乳化蜡的制备工艺。经实验优化结果表明:乳化剂的选择及用量、乳化时间、乳化温度、搅拌速度、去离子水加入方式等均影响石蜡的乳化及乳液的稳定性。制得的车用乳化蜡稳定性好,可以长久放置。 相似文献
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非离子型乳化蜡是借助于非离子乳化剂的乳化作用,在机械外力作用下将石蜡、 微晶蜡等分散在水中形成的乳状液.本文首先介绍了非离子型乳化蜡的配方组成乳化剂、蜡和水,对研究进展进行重点评述,突出了非离子乳化剂在制备中的重要作用,接着介绍了非离子型乳化蜡在造纸、木材加工、汽车和油气田开发等领域的应用进展,最后对非离子型乳化蜡的精... 相似文献
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深入分析了国内外石蜡、微晶蜡、特种蜡现状,针对我国石蜡生产,对特种蜡产品开发提出了一些建议,提高石蜡附加值的同时提升企业的竞争力和经济效益。 相似文献
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Yu Zhang Qiyu Huang Yamei Liu Yiran Liu Rongbin Li Yijie Wang Xun Zhang 《American Institute of Chemical Engineers》2022,68(9):e17746
Wax deposition is an important but troublesome boulder in petroleum industry that has always plagued pipeline engineering operators. In this study, wax deposition in the polyethylene pipes has different behaviors comparing wax deposition in stainless steel pipes such as smaller weight of wax deposits and lower wax content. After wax deposition experiments, some important parameters, including diffusivity and temperature gradient, were measured and calculated to explore the differences between two material pipes. Moreover, those factors can make a significant impact on radial mass flux. A series of results in polyethylene pipes suggests that higher diffusivity enhances diffusion flux of wax in the radial direction. But it was found that radial concentration gradient accounted for a larger proportion. These factors are the relationship of competition and cooperation and the combination of them results in different performances of wax deposition between polyethylene and stainless steel pipes. 相似文献
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石蜡中下游产品开发与应用 总被引:10,自引:1,他引:9
介绍了国内外石蜡和特种蜡、专用蜡的生产情况 ,列出了各行业对石蜡特性的要求 ,简要介绍了石油蜡中下游产品的开发途径以及我国与发达国家之间的差距 相似文献