Sorbent systems and methods

Patent metadata

Field	Value
Publication number	US-10391469-B2
Application number	US-201615345850-A
Country	US
Kind code	B2
Filing date	Nov 8, 2016
Priority date	Nov 8, 2016
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

A sorbent bed may comprise a sorbent support comprising at least one of a carbon material, a polymeric material, or alumina, wherein the sorbent support comprises a plurality of pores; and an impregnant configured to absorb ammonia disposed within the plurality of pores in the sorbent support, wherein the sorbent bed comprises between 20% and 60% by weight impregnant.

First claim

What is claimed is:

1. A sorbent bed, comprising:
a sorbent support comprising at least one of a carbon material, a polymeric material, or alumina, wherein the sorbent support comprises a plurality of pores; and
an impregnant configured to absorb ammonia disposed within the plurality of pores in the sorbent support, wherein the sorbent bed comprises greater than 50% and up to 60% by weight impregnant, and wherein the impregnant comprises at least one of phosphoric acid or zinc chloride.

2. The sorbent bed of claim 1 , wherein the impregnant comprises zinc chloride.

3. The sorbent bed of claim 1 , wherein the polymeric material is polymethyl methacrylate.

4. The sorbent bed of claim 1 , further comprising a retention element upon which the sorbent support is disposed.

5. A ventilation system, comprising:
a dehumidifier;
a sorbent system downstream of the dehumidifier, the sorbent system comprising a sorbent housing and a sorbent bed disposed within the sorbent housing,
wherein the sorbent housing comprises an inlet and an outlet for an airflow through the sorbent housing,
wherein the sorbent bed comprises a sorbent support and an impregnant configured to absorb ammonia, the sorbent support comprising at least one of a carbon material, a polymeric material, or alumina, wherein the sorbent support comprises a plurality of pores and the impregnant is disposed within the plurality of pores, and
wherein the sorbent bed comprises greater than 50% and up to 60% by weight impregnant, and wherein the impregnant comprises at least one of phosphoric acid or zinc chloride.

6. The ventilation system of claim 5 , wherein a relative humidity around the sorbent system is below 50%.

7. The ventilation system of claim 5 , wherein the impregnant comprises zinc chloride.

8. The ventilation system of claim 5 , wherein the polymeric material is polymethyl methacrylate.

9. The ventilation system of claim 5 , wherein the sorbent bed further comprises a retention element upon which the sorbent support is disposed.

10. The ventilation system of claim 5 , wherein the sorbent housing is configured to receive a flowrate between 0.1 and 30 cubic feet per minute.

11. A method for making a sorbent system, comprising:
forming an impregnant solution comprising a solvent and an impregnant configured to absorb ammonia; and
forming a sorbent bed by applying the impregnant solution to a sorbent support, infiltrating a plurality of pores comprised in the sorbent support with the impregnant solution, and evaporating the solvent from the impregnant solution applied to the sorbent support leaving the impregnant in the plurality of pores, wherein the sorbent support comprises at least one of a carbon material, a polymeric material, or alumina,
wherein the sorbent bed comprises greater than 50% and up to 60% by weight impregnant after the evaporating the solvent, wherein the impregnant comprises at least one of phosphoric acid or zinc chloride.

12. The method of claim 11 , further comprising forming the sorbent support by applying support particles to a retention element.

13. The method of claim 11 , further comprising disposing the sorbent bed into a sorbent housing after the evaporating the solvent.

Assignees

• Hamilton Sundstrand Corp

Inventors

• Ranz Holden T
• Nalette Timothy A
• Yu Ping

Classifications

• B01J2220/56

  Use in the form of a bed · CPC title

• B01J20/3246

  having a well defined chemical structure · CPC title

• B01J20/321

  consisting of a polymer obtained by reactions involving only carbon to carbon unsaturated bonds · CPC title

• B01D2259/4575

  in aeroplanes or space ships · CPC title

• B01D53/82

  with stationary reactants · CPC title