EPA Science Inventory

Experimental Evaluation of Hybrid Distillation-Vapor Permeation Process for Efficient Ethanol Recovery from Ethanol-Water Mixtures

Citation:

VANE, L. M., F. R. ALVAREZ, Y. Huang, AND R. Baker. Experimental Evaluation of Hybrid Distillation-Vapor Permeation Process for Efficient Ethanol Recovery from Ethanol-Water Mixtures. Presented at North American Membrane Society, Washington, DC, July 17 - 22, 2010.

Description:

The energy demand of distillation-based systems for ethanol recovery and dehydration can be significant, particularly for dilute solutions [1]. An alternative separation process integrating vapor stripping with a vapor compression step and a vapor permeation membrane separation step, termed Membrane Assisted Vapor Stripping (MAVS), has been proposed [2]. A schematic diagram of the process is shown in Figure 1. The water-selective membrane separates the ethanol-water vapor into water-rich permeate and ethanol-enriched retentate vapor streams from which latent and sensible heat can be recovered. The objective of this work was to experimentally demonstrate the performance of a MAVS system and to compare the observed performance with chemical process simulation results using a 5 wt% ethanol aqueous feed stream as the benchmark.

Purpose/Objective:

To inform EPA

URLs/Downloads:

Record Details:

Record Type: DOCUMENT (PRESENTATION/ABSTRACT)
Start Date: 07/20/2010
Completion Date: 07/20/2010
Record Last Revised: 10/15/2010
Record Created: 09/13/2010
Record Released: 09/13/2010
OMB Category: Other
Record ID: 228603

Organization:

U.S. ENVIRONMENTAL PROTECTION AGENCY

OFFICE OF RESEARCH AND DEVELOPMENT

NATIONAL RISK MANAGEMENT RESEARCH LABORATORY

SUSTAINABLE TECHNOLOGY DIVISION

CLEAN PROCESSES BRANCH