Technology Profile: Production of 2-propylheptanol
By Intratec Solutions |
This column is based on “2-Propylheptanol Production Process – Cost Analysis,” a report published by Intratec. It can be found at: www.intratec.us/analysis/2-propylheptanol-production-cost.
Also known as 2-PH and 2-propylheptyl alcohol, 2-propylheptanol is a branched fatty alcohol, primarily used in the production of plasticizers and surfactants applied in detergents or industrial cleaning agents, as well as in the manufacture of lubricants and acrylates in adhesives applications.
This fatty alcohol is produced at commercial scale mainly by the hydroformylation of n-butenes to aldehyde (oxo synthesis), followed by aldol condensation and hydrogenation steps. In the process under analysis, 2-propylheptanol is produced from butenes and synthesis gas (syngas). The process examined is similar to the LP Oxo technology jointly licensed by Johnson Matthey Davy (London, U.K.; www.matthey.com) and Dow Chemical (Midland, Mich.; www.dow.com).
Figure 1. The diagram shows the production of 2-propylheptanol via Oxo synthesis[/caption]
The process comprises three major sections: hydroformylation; aldolization; and hydrogenation (Figure 1).
Hydroformylation. Syngas and raffinate-2 (C4 residual containing butenes and butane)…