Organic Vapor Recovery and Energy Efficiency During Electric Regeneration of an Activated Carbon Fiber Cloth Adsorber
Abstract
An electrothermal-swing adsorption system was demonstrated on the bench scale for capture and recovery of organic vapors from air streams. Methyl propyl ketone (MPK), methyl ethyl ketone, n-hexane, acetone, and methylene chloride were removed and recovered at 200-1,020 ppm(v) in a 40.0 slpm air stream while using activated carbon fiber cloth (ACFC) adsorbent. Removal efficiencies were greater than 99.9%. Liquid recovery fractions increased with increasing relative pressure, ranging from 0.11 for methylene chloride (P/P(sat)=2.1X10(exp -3)) to greater than 0.80 for MPK (P/P(sat)=2.2X10(exp -2)). The electrical energy consumed during regeneration per mol of liquid organic compound recovered decreased with increasing relative pressure of the inlet gas stream, ranging from 4,698 kJ/mol for methylene chloride to 327 kJ/mol for MPK. Equilibrium ACFC adsorption capacity, throughput ratio, and length of unused bed were also evaluated. These results are encouraging for the development of a new technology to capture and readily recover a wide range of organic vapors from air streams.
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 2004
- Accession Number
- ADA498918
Entities
People
- A. M. Asce
- Christopher M. Lehmann
- David Ramírez
- K. J. Hay
- Katherine D. Dombrowski
- M. Asce
- Mark J. Rood
- Patrick D. Sullivan
Organizations
- University of Illinois Urbana–Champaign