重油接触裂解制乙烯的HCC工艺研究

重油裂解制乙烯的HCC技术采用与FCC类似为“反应－再生”工艺技术，利用重油直接裂解制乙烯，兼产丙烯、丁烯和轻质芳烃，既可扩大乙烯的原料的来源，又可降低生产成本。HCC工艺的乙烯产率可达19％－27％，总烯烃产率大于50％。     

测定活性炭吸SO2穿透时间和穿透容量的实验方法

介绍了一种测定SO2穿透时间及穿透容量的实验方法。     

反相高效液相色谱法分析双乙氧乙膦烷的含量

本文介绍了反相高效液相色谱法分析双乙氧乙膦烷的含量，方法简便，在400－1200μg/ml的范围内呈良好的线性关系，相关系数0.9994，最低检测浓度15μg/ml。     

Extraction of Th（IV） from nitric acid with 40—benzoyl—2,4—dihydro—5—methyl—2—phenyl—3H—pyrazol—3—thione

The BMPPT(4-benzoyl-2,4-dihydro-5-methyl-2-phenyl-3H-pyrazol-3-thione)was synthesized from BMPP.Its m.p.is 106-108℃,The results of the element analysis are as follows:C,68.51%,H,4.51%,N,9.26%,S.11.47%,which are in conformity with the theoretical value(C,69.15%,H,4.76%,N.9.52%,S.10.90%),The solvent extraction of Th^4 from nitric acid solution by BMPPT in benzene was studied.The extraction ability of BMPPT is not so high as that of its parent (BMPP).The Th^4 distribution ratio(DTh)in creases with the increasing pH of the aqueous phase,and pH1/2 for Th^4 was 3.2([BMPPT]=0.10mol/L),When the pH increases,the distribution ratio of Th^4 increasdes linearly with the slope of 1.59,When the concentration of BMPPT increases,the distribution ratio of Th^4 increases rapidly.The lgDTh-lg[BMPPT]is linear with the slope of 1.42 and the extraction mechanism is the cation ion-exchange.