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Title: Method of and apparatus for determining deposition-point temperature

Abstract

Acoustic-wave sensor apparatus and method for analyzing a normally liquid petroleum-based composition for monitoring deposition-point temperature. The apparatus includes at least one acoustic-wave device such as SAW, QCM, FPM, TSM or APM type devices in contact with the petroleum-based composition for sensing or detecting the surface temperature at which deposition occurs and/or rate of deposition as a function of temperature by sensing an accompanying change in frequency, phase shift, damping voltage or damping current of an electrical oscillator to a known calibrated condition. The acoustic wave device is actively cooled to monitor the deposition of constituents such as paraffins by determining the point at which solids from the liquid composition begin to form on the acoustic wave device. The acoustic wave device can be heated to melt or boil off the deposits to reset the monitor and the process can be repeated.

Inventors:
 [1];  [1];  [1]
  1. (Albuquerque, NM)
Issue Date:
Research Org.:
SANDIA CORP
OSTI Identifier:
871938
Patent Number(s):
5827952
Assignee:
Sandia National Laboratories (Albuquerque, NM) SNL
DOE Contract Number:  
AC04-94AL85000
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
method; apparatus; determining; deposition-point; temperature; acoustic-wave; sensor; analyzing; normally; liquid; petroleum-based; composition; monitoring; device; qcm; fpm; tsm; apm; type; devices; contact; sensing; detecting; surface; deposition; occurs; rate; function; accompanying; change; frequency; phase; shift; damping; voltage; current; electrical; oscillator; calibrated; condition; acoustic; wave; actively; cooled; monitor; constituents; paraffins; solids; begin; form; heated; melt; boil; deposits; reset; process; repeated; acoustic-wave device; phase shift; acoustic wave; sensor apparatus; acoustic-wave sensor; petroleum-based composition; normally liquid; wave device; surface temperature; actively cooled; liquid composition; deposition occurs; wave sensor; deposition-point temperature; liquid petroleum-based; /73/208/374/

Citation Formats

Mansure, Arthur J., Spates, James J., and Martin, Stephen J. Method of and apparatus for determining deposition-point temperature. United States: N. p., 1998. Web.
Mansure, Arthur J., Spates, James J., & Martin, Stephen J. Method of and apparatus for determining deposition-point temperature. United States.
Mansure, Arthur J., Spates, James J., and Martin, Stephen J. Thu . "Method of and apparatus for determining deposition-point temperature". United States. https://www.osti.gov/servlets/purl/871938.
@article{osti_871938,
title = {Method of and apparatus for determining deposition-point temperature},
author = {Mansure, Arthur J. and Spates, James J. and Martin, Stephen J.},
abstractNote = {Acoustic-wave sensor apparatus and method for analyzing a normally liquid petroleum-based composition for monitoring deposition-point temperature. The apparatus includes at least one acoustic-wave device such as SAW, QCM, FPM, TSM or APM type devices in contact with the petroleum-based composition for sensing or detecting the surface temperature at which deposition occurs and/or rate of deposition as a function of temperature by sensing an accompanying change in frequency, phase shift, damping voltage or damping current of an electrical oscillator to a known calibrated condition. The acoustic wave device is actively cooled to monitor the deposition of constituents such as paraffins by determining the point at which solids from the liquid composition begin to form on the acoustic wave device. The acoustic wave device can be heated to melt or boil off the deposits to reset the monitor and the process can be repeated.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {1}
}

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