DOE Patents title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: System and method for controlling metal oxide gel particle size

Abstract

Metal oxide gel particles, may be prepared with a desired particle size, by preparing a low-temperature aqueous metal nitrate solution containing hexamethylene tetramine as a feed solution; and causing the feed solution to flow through a first tube and exit the first tube as a first stream at a first flow rate, so as to contact a high-temperature nonaqueous drive fluid. The drive fluid flows through a second tube at a second flow rate. Shear between the first stream and the drive fluid breaks the first stream into particles of the metal nitrate solution, and decomposition of hexamethylene tetramine converts metal nitrate solution particles into metal oxide gel particles. A metal oxide gel particle size is measured optically, using a sensor device directed at a flow of metal oxide gel particles within the stream of drive fluid. The sensor device measures transmission of light absorbed by either the metal oxide gel particles or the drive fluid, so that transmission of light through the drive fluid changes for a period of time as a metal oxide gel particle passes the optical sensor. If a measured particle size is not about equal to a desired particle size, the particle size may bemore » corrected by adjusting a ratio of the first flow rate to a total flow rate, where the total flow rate is the sum of the first and second flow rates.

Inventors:
Issue Date:
Research Org.:
X Energy, LLC, Rockville, MD (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
1805677
Patent Number(s):
10962461
Application Number:
16/530,695
Assignee:
X Energy, LLC (Rockville, MD)
DOE Contract Number:  
NE0008472
Resource Type:
Patent
Resource Relation:
Patent File Date: 08/02/2019
Country of Publication:
United States
Language:
English

Citation Formats

Linneen, Nicholas N. System and method for controlling metal oxide gel particle size. United States: N. p., 2021. Web.
Linneen, Nicholas N. System and method for controlling metal oxide gel particle size. United States.
Linneen, Nicholas N. Tue . "System and method for controlling metal oxide gel particle size". United States. https://www.osti.gov/servlets/purl/1805677.
@article{osti_1805677,
title = {System and method for controlling metal oxide gel particle size},
author = {Linneen, Nicholas N.},
abstractNote = {Metal oxide gel particles, may be prepared with a desired particle size, by preparing a low-temperature aqueous metal nitrate solution containing hexamethylene tetramine as a feed solution; and causing the feed solution to flow through a first tube and exit the first tube as a first stream at a first flow rate, so as to contact a high-temperature nonaqueous drive fluid. The drive fluid flows through a second tube at a second flow rate. Shear between the first stream and the drive fluid breaks the first stream into particles of the metal nitrate solution, and decomposition of hexamethylene tetramine converts metal nitrate solution particles into metal oxide gel particles. A metal oxide gel particle size is measured optically, using a sensor device directed at a flow of metal oxide gel particles within the stream of drive fluid. The sensor device measures transmission of light absorbed by either the metal oxide gel particles or the drive fluid, so that transmission of light through the drive fluid changes for a period of time as a metal oxide gel particle passes the optical sensor. If a measured particle size is not about equal to a desired particle size, the particle size may be corrected by adjusting a ratio of the first flow rate to a total flow rate, where the total flow rate is the sum of the first and second flow rates.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2021},
month = {3}
}

Works referenced in this record:

Portable analyzer for determining size and chemical composition of an aerosol
patent, December 1999


Method and apparatus for detecting size of particles in liquid
patent, April 2011