Design Rules for Regenerative Filtration Systems
Abstract
Regenerative adsorption systems can provide the user with the required level of chemical vapor protection continuously, for an indefinite period of time, without filter change-out. Two types of regenerative filtration systems, Thermal Swing Adsorption (TSA) and Pressure Swing Adsorption (PSA) have been studied for chemical warfare (CW) applications and evaluated at the prototype scale. Since these systems rely on both efficient adsorption and efficient regeneration of the adsorbent, design requirements for TSA and PSA systems can differ greatly from those used to design and operate current consumable filters. New design rules need to be developed to optimize and integrate regenerative air purification systems into host applications. One critical aspect of regenerative adsorption systems is that optimum design is sometimes counter-intuitive. For example, unlike a consumable filter, optimum performance is not achieved by simply increasing the amount of adsorbent. Since equal consideration must be given to achieving rapid/efficient regeneration, the optimum design is typically achieved by selecting adsorbent(s) such that the amount of chemical desorbed (per unit gas volume treated) divided by the amount of chemical adsorbed (per unit gas volume treated) is as large as possible. Examples of these effects are discussed as are the implications for adsorbent selection.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jan 01, 2006
- Accession Number
- ADA444664
Entities
People
- David K. Friday
- John J. Mahle