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Study on the Process Simulation and Energy Saving for BDO Purification Process

Author: ZuoBingHai
Tutor: ZhangPengFei
School: Tianjin University
Course: Chemical Engineering
Keywords: BDO Refined Process simulation Energy-saving Aspen Plus
CLC: TQ223.162
Type: Master's thesis
Year: 2007
Downloads: 265
Quote: 0
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Abstract


1,4 - butanediol (1,4-butanediol, or BDO) is an important organic chemical raw materials, produce tetrahydrofuran (THF), γ-butyrolactone (GBL) and polyethylene terephthalate D terephthalate (PBT), and other products. The BDO's production methods Repee law, maleic anhydride method, butane / maleic anhydride law. The Davy process maleic anhydride law is the latest technology to produce BDO, has many advantages. BDO's very versatile, and therefore in great demand. Due to the blockade of foreign technology, only two sets of the BDO production of devices all from abroad. To this end, the development of technology with independent intellectual property rights, to fill the gaps, it is very necessary and of great significance. The use of chemical process simulation software Aspen Plus, BDO refining process research and development process and the programs to analyze the study, obtained the better technical solutions distillation system of energy-saving strategy of exploration and research. BDO refined feed containing components defined in the Aspen Plus database. Combined by basic physical data in the literature in the Aspen Plus the PCES system to get the thermodynamic parameters necessary to define the components of Aspen Plus database. The feed also contains alcohol, water, and other ingredients, the mixture is highly non-ideal liquid and the operation of the distillation column a lower pressure. According to the characteristics of Mixtures as process simulation calculation of the thermodynamic model chosen NRTL and Wilson activity coefficient model. Experimental data validation, simulation method and the results are reliable. Separation purposes, a simple tower to separation the mixture containing BDO Department, a total of five kinds of separation program. Through the analysis of the five kinds of separation program obtained significantly higher energy consumption by 5 program 4 and programs. The use of chemical process simulation software Aspen Plus, the program simple tower 1 to 3 simulation studies, got the better of the process parameters, sensitivity analysis and the various processes. By comparative analysis of these three programs, and found that the program first, the program of the lowest energy consumption in these types of programs. Simple tower program based on three improved complex tower program, and the simulation study and analysis of the three processes, respectively, got the better of the process data. Comparison of simulation results, improved complex towers programs, in the case of higher product yield, energy consumption is the lowest of these programs. An improved program of energy research, the temperature difference between the heat integration tower to reach the appropriate temperature difference by using differential pressure technology. Using heat integration processes theoretically than not using heat integration process heat and cooling loads are saving about 20%.

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CLC: > Industrial Technology > Chemical Industry > Basic Organic Chemistry Industry > The production of aliphatic compounds ( acyclic compounds) > Aliphatic alcohols (alcohols, hydroxy compounds) and its derivatives > Aliphatic alcohol > Polyols > Diols
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