To know more please visit www.intratec.us/publications
In this report, the recovery of propylene and nitrogen from a polypropylene degassing vent stream is reviewed and compared with its use as boiler fuel. Included in the analysis is an overview of the technology and economics of a process similar to MTR VaporSep®. Both the capital investment and the operating costs are presented for a propylene recovery unit (PRU) operating in the US Gulf Coast, Germany, and Brazil.
The economic analysis presented in this report is based upon a recovery unit installed in a 450 kta polypropylene plant. The estimated CAPEX for such unit is USD 5.8 million on the US Gulf Coast, the lowest figure among the regions under analysis. Due to propylene scarcity, which raised its market value, and the low fuel prices due to natural gas growing offerings, installation of a membrane unit for this type of recovery is advantageous. This fact is proven by the calculated internal rate of return of more than 40% per year in the region.