Zeolite particles, systems for using same and methods of use in desiccation

Patent metadata

Field	Value
Publication number	US-11712677-B2
Application number	US-202015929804-A
Country	US
Kind code	B2
Filing date	May 22, 2020
Priority date	May 22, 2019
Publication date	Aug 1, 2023
Grant date	Aug 1, 2023

Abstract

Methods, compositions, systems and devices are provided in which zeolite particles, preferably of silicon and aluminum, are used as desiccants. In embodiments a plurality of zeolite particles are provided that are less than 1 mm in size. The particles may be arrayed such that at least some of the plurality of particles are spaced apart from each other and may be arrayed in rows and columns. Embodiments provide the particles are useful or removing water under ambient conditions and in removing water from air or material and in an embodiment removing water from plant material, such as harvested crop material, or where the dried air is contacted with plant material. Microwave radiation may be used to efficiently and in a cost effective manner dehydrate the rehydrated particles.

First claim

What is claimed is:

1. A method of removing water from material or air comprising water, the method comprising,
a) contacting said material or air with a plurality of zeolite particles comprising silicon and aluminum and having a diameter and length of less than 1 millimeter (mm), wherein said plurality of zeolite particles are arrayed on a surface in rows or columns or both;
b) moving water from said material or air into said plurality of zeolite particles; and thereafter c) removing the water from said plurality of zeolite particles by exposing said plurality of zeolite particles to microwave radiation.

2. The method of claim 1 , wherein said zeolite particles comprise about 5% (atomic) to about 45% (atomic) of aluminum.

3. The method of claim 1 , wherein said material comprises plant material or said air having water moved to said plurality of zeolite particles is contacted with plant material.

4. The method of claim 1 , wherein said plurality comprises zeolite particles of about 0.5 μm to 50 μm in diameter and length.

5. The method of claim 1 , wherein said plurality comprises zeolite particles of about 100-400 nm in diameter and length.

6. The method of claim 1 , wherein said water is moved from said material or air under ambient temperature conditions.

7. The method of claim 1 , wherein said plurality of zeolite particles are arrayed on a surface such that at least a portion of said plurality of zeolite particles do not touch each other.

8. The method of claim 1 , wherein said plurality of zeolite particles are exposed to said microwave radiation for about 10 seconds to about 40 minutes.

9. The method of claim 1 , wherein said plurality of zeolite particles are exposed to said microwave radiation until about 30% of water is said plurality of zeolite particles is removed.

10. A method of removing moisture from a composition, said method comprising:
a) contacting said composition with a desiccant comprising zeolite particles comprising silicon and aluminum and having a diameter and length of less than 1 millimeter (mm), wherein said plurality of zeolite particles are arrayed on a surface in rows or columns or both;
b) moving water from said composition and into said zeolite particles; and thereafter
c) removing the water from said zeolite particles by exposing said zeolite particles to microwave radiation.

Assignees

• Univ California
• Univ Colorado State Res Found

Inventors

• Guo Ting
• Donadio Davide
• Quinn Jason
• Quinn Casey

Classifications

• B01J20/18 Primary

  Synthetic zeolitic molecular sieves · CPC title

• B01D53/0423

  Beds in columns · CPC title

• B01D53/261

  by adsorption · CPC title

• B01D53/28

  Selection of materials for use as drying agents · CPC title

• B01J20/28004 Primary

  Sorbent size or size distribution, e.g. particle size · CPC title