grossmann - carnegie mellon universityegon.cheme.cmu.edu/esi/docs/pdf/esi_grossmann.pdf ·...
Post on 18-Aug-2018
223 Views
Preview:
TRANSCRIPT
March 2011 Dr. Mariano Mar/n
PostDoctoral Research Fellow Chemical Engineering Department
Carnegie Mellon University Currently
Assistant professor at University of Salamanca (Spain)
Advisor: Prof. Ignacio E. Grossmann
Introduction
The first genera/on of biofuels from corn or vegetable oil can be produce under profitable and energy favorable scenarios with the help of mathema/cal programming [1]. Their drawback is that they present some ethical dilemmas due to its competence with the food market. Thus, the second genera/on of biofuels are a promising and flexible source of fuels for the transporta/on sector [2] However their produc/on process is s/ll under development and mathema/cal programming techniques are a powerful tool to help synthesize environmentally friendly and profitbale flowsheets.
[1] Karuppiah, R.; Peschel, A., Grossmann, I.E., Mar=n, M., Mar>nson, W., Zullo, L, (2008) “AICHE Journal. 54, 6, 1499‐1525 [2] Cole DE. (2007) Issues facing the Auto Industry: Alterna>ve Fuels, Technologies, and Policies ACP Mee>ng Eagle Crest Conference Center
Method
We use ma thema/ca l programming techniques to accomplish the synthesis of the produc/on of: hydrogen, bioethanol, Ft‐diesel from Switchgrass, a lignocellulosic raw material, and biodiesel from cooking oil or algae oil, see figure
Method
Our main concern is the op/miza/on of energy and water consump/on. We propose a two stage method [3]: 1.‐Energy op/miza/on: Superstructure and parameter op>miza>on including economic evalua>on to select the flowsheet out of a large number of alterna/ves for each biofuel and the opera>ng condi>ons 2.‐Water op/miza/on: We design the op>mal water network [4,5].
[3] Grossmann, I.E., Mar>n, M. (2010) Chinese J. Chem. Eng, 18 (6) 914‐922 [4] Ahmetovic, E.; Mar=n, M.; Grossmann, I.E. (2010) Ind. Eng. Chem Res. 49 (17) 7972‐ 7982 [5] Mar=n, M.; Ahmetovic, E.; Grossmann, I.E. (2010) I&ECR doi: 10.1021/ie101175p
Results
Op/mal flowsheet for the produc/on of ethanol from hydrolysis of Switchgrass 60Mgal/yr; $48MM/yr
Results
Op/mal flowsheet for the produc/on of ethanol via gasifica/on of Switchgrass
60Mgal/yr; $25MM/yr
Results
Op/mal flowsheet for the produc/on of biodiesel from algae
70MMgal/yr, $28MM/yr
Results
Op/mal flowsheet for the produc/on of biodiesel from algae oil
72Mgal/yr; $29MM/yr
Results
Op/mal flowsheet for the produc/on of biodiesel from cooking oil
72Mgal/yr; $48MM/yr
Table 1.‐ Summary of results [6‐10]
A C B D F E
Results
[6] Mar=n, M., Grossmann, I.E. (2011) AIChE J. DOI: 10.1002/aic.12544 [7] Mar=n, M., Grossmann, I.E. Energy op>miza>on of Hydrogen produc>on from biomass. Rev. Submited to Comp. Chem. Eng. [8] Mar=n, M., Grossmann, I.E. Energy op>miza>on of lignocellulosic bioethanol produc>on via Hydrolysis to be submieed AIChE J. [9] Mar=n, M., Grossmann, I.E. Process op>miza>on of FT‐ Diesel produc>on from biomass. To be submieed [10] Mar=n, M., Grossmann, I.E. Process op>miza>on bioDiesel produc>on from cooking oil and Algae. To be submieed
(*) kg instead of gal
Conclusions
‐‐Biomass and waste are promising raw material for biofuels. ‐‐The number of biofuels is large: hydrogen, bioethanol, biodiesel, green gasoline and diesel, biomethanol…. ‐‐Mathema/cal programming techniques offer a powerful tool to synthesize bioprocesses to make them economically afrac/ve and environmentally friendly. ‐‐It is feasible to produce second genera/on of biofuels economically, but further development is required in purifica/on and reac/on technologies to increase water recycle and reuse and increase the yield of the processes.
top related