(546i) Modeling and Simulation of 1,3 Butadiene Production Process at Turndown Capacity
AIChE Annual Meeting
2018
2018 AIChE Annual Meeting
Fuels and Petrochemicals Division
Poster Session: Fuels and Petrochemicals Division
Wednesday, October 31, 2018 - 3:30pm to 5:00pm
In this paper, steady state and dynamic models are developed in the Aspen Plus (V10) framework for the production of 1,3-butadiene using N-methyl-2-pyrrolidone (NMP) as a solvent at high turndown ratios of feed rates in an olefin plant. This is a very complex process with significant number of recycle streams, which adds to the difficulty of successfully simulating the process in software. In this process, the mixed feed and the NMP solvent first go through a series of columns where extractive distillation is utilized to separate the butanes, butenes and acetylenes. The vapor product from the extractive distillation goes to another series of distillation columns and is purified to the required purity. The bottom product of the extractive distillation column, which is mainly NMP solvent with traces of hydrocarbons, is purified and recycled to the first and third extractive distillation columns. The maximum operating feasibility to attain on-spec product of the extraction process is examined via parametric analysis in steady-state simulations. The optimal operating status and control strategies under various facility capacities are studied via dynamic simulations.
References
- 1,3 Butadiene (BD) Market Analysis by Application (Butadiene Rubber, ABS, SBR, SB Latex, NBR, Hexamethylenediamine), Bio-based Opportunities and Segment Forecasts To 2020. (http://www.grandviewresearch.com/industry-analysis/butadiene-market)
- The Continuing Quest for Butadiene by Jeffrey S. Plotkin. (https://www.acs.org/content/acs/en/pressroom/cutting-edge-chemistry/the-continuing-quest-for-butadiene.html)
- Butadiene Extraction Technology overview by CB&I.