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Title: Using liquid desiccant as a regenerable filter for capturing and deactivating contaminants

Abstract

A method, and systems for implementing such method, for purifying and conditioning air of weaponized contaminants. The method includes wetting a filter packing media with a salt-based liquid desiccant, such as water with a high concentration of lithium chloride. Air is passed through the wetted filter packing media and the contaminants in are captured with the liquid desiccant while the liquid desiccant dehumidifies the air. The captured contaminants are then deactivated in the liquid desiccant, which may include heating the liquid desiccant. The liquid desiccant is regenerated by applying heat to the liquid desiccant and then removing moisture. The method includes repeating the wetting with the regenerated liquid desiccant which provides a regenerable filtering process that captures and deactivates contaminants on an ongoing basis while also conditioning the air. The method may include filtration effectiveness enhancement by electrostatic or inertial means.

Inventors:
 [1];  [2];  [3];  [3];  [3];  [3]
  1. Denver, CO
  2. Broomfield, CO
  3. Golden, CO
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
921031
Patent Number(s):
7,306,650
Application Number:
10/477,385
Assignee:
Midwest Research Institute (Kansas City, MO)
DOE Contract Number:  
AC36-99GO10337
Resource Type:
Patent
Country of Publication:
United States
Language:
English

Citation Formats

Slayzak, Steven J, Anderson, Ren S, Judkoff, Ronald D, Blake, Daniel M, Vinzant, Todd B, and Ryan, Joseph P. Using liquid desiccant as a regenerable filter for capturing and deactivating contaminants. United States: N. p., 2007. Web.
Slayzak, Steven J, Anderson, Ren S, Judkoff, Ronald D, Blake, Daniel M, Vinzant, Todd B, & Ryan, Joseph P. Using liquid desiccant as a regenerable filter for capturing and deactivating contaminants. United States.
Slayzak, Steven J, Anderson, Ren S, Judkoff, Ronald D, Blake, Daniel M, Vinzant, Todd B, and Ryan, Joseph P. 2007. "Using liquid desiccant as a regenerable filter for capturing and deactivating contaminants". United States. https://www.osti.gov/servlets/purl/921031.
@article{osti_921031,
title = {Using liquid desiccant as a regenerable filter for capturing and deactivating contaminants},
author = {Slayzak, Steven J and Anderson, Ren S and Judkoff, Ronald D and Blake, Daniel M and Vinzant, Todd B and Ryan, Joseph P},
abstractNote = {A method, and systems for implementing such method, for purifying and conditioning air of weaponized contaminants. The method includes wetting a filter packing media with a salt-based liquid desiccant, such as water with a high concentration of lithium chloride. Air is passed through the wetted filter packing media and the contaminants in are captured with the liquid desiccant while the liquid desiccant dehumidifies the air. The captured contaminants are then deactivated in the liquid desiccant, which may include heating the liquid desiccant. The liquid desiccant is regenerated by applying heat to the liquid desiccant and then removing moisture. The method includes repeating the wetting with the regenerated liquid desiccant which provides a regenerable filtering process that captures and deactivates contaminants on an ongoing basis while also conditioning the air. The method may include filtration effectiveness enhancement by electrostatic or inertial means.},
doi = {},
url = {https://www.osti.gov/biblio/921031}, journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {12}
}