(16a) Techno-Economics of Catalytic Conversion of Ethanol to Chemical Grade n-Butanol and 1-Hexene
- Conference: AIChE Spring Meeting and Global Congress on Process Safety
- Year: 2019
- Proceeding: 2019 Spring Meeting and 15th Global Congress on Process Safety
- Group: Fuels and Petrochemicals Division - See Also The 31st Ethylene Producers, 19th Topical Conference on Gas Utilization, and 22nd Topical Conference on Refinery Processing
- Time: Monday, April 1, 2019 - 1:30pm-2:00pm
A techno-economic analysis of an ethanol to n-butanol process was developed to investigate the feasibility of making chemical grade products that have a premium price relative to transportation fuels. To remove the uncertainties associated with the various processes for making ethanol, this analysis assumed that the ethanol feed stock for the process would be purchased as a commodity chemical at market prices and upgraded to n-butanol which has a significantly higher value as a chemical. Mixed oxide based catalyst developed for this process has demonstrated a 61% one pass ethanol conversion to n-butanol, with some 6- and 8-carbon alcohols (linear and branched). A conceptual process to upgrade the n-hexanol fraction of the co-products to produce chemical grade 1-hexene was developed to improve the minimum butanol selling price (MBSP) â the price that gives a net present value of zero over the life of the project after accounting for all costs and revenues, including a 10% internal rate of return, using a discounted cash flow method. The results of this study will be presented including economic sensitivities to the ethanol feed stock cost, 1-hexene market value, conversion and selectivity to products and co-products, plus other financial assumptions.