| Light hydrocarbon refined and purification technology is an important component of the petroleum chemical industry. The research of light hydrocarbon refined and comprehensive utilization is important to improve added-value of light hydrocarbon fractionation products, the actual application of distillation theory, and the refining of saturate hydrocarbon products and the light hydrocarbon fractionation product processing. Light hydrocarbon is a mixture of low-carbon saturated hydrocarbon which has respective quality and use, Special purity is required for different uses of the product, which makes light hydrocarbon refined and comprehensive utilization become a complex process which involves in various petrochemical industry fields.In this paper, separation of mixed pentane, desulfurization and refining of light hydrocarbon fractionation product, extraction and distillation of cyclopentane, the control system of light hydrocarbon fractionation device, deep processing of light hydrocarbon fractionation products are researched, which provide theoretical basis for deep processing of light hydrocarbon fractionation.The main contents of paper summarize four parts:1,The research on separation of mixed pentaneThe components of mixed pentane were determined by process simulation method, the distillation process of mixed pentane was designed and the device which has four distillator was established. The design data and actual operating data were compared and analyzed, which will lay a theoretical foundation for deep processing of other light hydrocarbon fractionation products.2,Desulfurization of light hydrocarbon fractionation productsThe alcohol-amine desulfurization - LPG fixed bed alkali-free deodorization process and corresponding device were designed by comparing the desulfurization of LPG and cyclopentane. The actual data was verified by compared with designed data. The compound alkali extraction desulphurization process, that is 5% lye-5% ethanol combined with solvent extraction by static and dynamic simulation experiments of cyclopentane desulphurization products. The results show that the desulphurization efficiency is obvious when the flow is 10-15mL/min, temperature is 10-20℃. Fine desulphurization product of pentane and saturated C5 can be researched based on the study mentioned above.3,Research of cyclopentane extraction and distillationBased on the characteristics of cyclopentane product separation system and initial solvent screening, cyclohexanol (CHOL), N-methyl pyrrolidone (NMP) and dimethylformamide (DMF) are determined as suitable extractive distillation solvent. The refining process of cyclopentane 3,000 tons per year was designed by compared with the results of experimental and simulational study of 2,2 - dimethyl butane and cyclopentane separation, which provide a basis for purification and refined cyclopentane.4,Application of advanced control system of light hydrocarbon fractionation unitThe control systems of light hydrocarbon fractionation unit and mixed pentane fine separation device are analyzed to determine the two sets of devices to implement advanced control options. The results show that the advanced control systems on the device improve stable operation by compared with the actual operating data before and after advanced control.5,The utilization of light hydrocarbonDeep processing of one component light hydrocarbon should be concentrated in the use of oxidation and dehydrogenation fractionation through analysis deep processing of the light hydrocarbon products and comprehensive from different aspects.1,4 - cis-butanediol, isoprene, isobutylene, cyclohexanone, cyclohexane and chlorinated butyl rubber and other chemical products with higher value-added should be prodcuced. The direction of downstream development and scientific research are proposed based on the analysis of production and the application of these products.
|
PDF Full Text Request