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Title: Optical high acidity sensor

Abstract

An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber.more » 10 figs.« less

Inventors:
; ; ;
Publication Date:
Research Org.:
University of California
Sponsoring Org.:
USDOE, Washington, DC (United States)
OSTI Identifier:
516925
Patent Number(s):
US 5,650,331/A/
Application Number:
PAN: 7-770,388
Assignee:
Dept. of Energy, Washington, DC (United States) PTO; SCA: 400102; 440800; PA: EDB-97:119065; SN: 97001831607
DOE Contract Number:
W-7405-ENG-36
Resource Type:
Patent
Resource Relation:
Other Information: PBD: 22 Jul 1997
Country of Publication:
United States
Language:
English
Subject:
40 CHEMISTRY; 44 INSTRUMENTATION, INCLUDING NUCLEAR AND PARTICLE DETECTORS; PH VALUE; MEASURING INSTRUMENTS; MEASURING METHODS; DESIGN; FIBER OPTICS; CALIBRATION STANDARDS; OPERATION

Citation Formats

Jorgensen, B.S., Nekimken, H.L., Carey, W.P., and O`Rourke, P.E. Optical high acidity sensor. United States: N. p., 1997. Web.
Jorgensen, B.S., Nekimken, H.L., Carey, W.P., & O`Rourke, P.E. Optical high acidity sensor. United States.
Jorgensen, B.S., Nekimken, H.L., Carey, W.P., and O`Rourke, P.E. Tue . "Optical high acidity sensor". United States. doi:.
@article{osti_516925,
title = {Optical high acidity sensor},
author = {Jorgensen, B.S. and Nekimken, H.L. and Carey, W.P. and O`Rourke, P.E.},
abstractNote = {An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the range of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber. 10 figs.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Jul 22 00:00:00 EDT 1997},
month = {Tue Jul 22 00:00:00 EDT 1997}
}
  • An apparatus and method for determining acid concentrations in solutions having acid concentrations of from about 0.1 Molar to about 16 Molar is disclosed. The apparatus includes a chamber for interrogation of the sample solution, a fiber optic light source for passing light transversely through the chamber, a fiber optic collector for receiving the collimated light after transmission through the chamber, a coating of an acid resistant polymeric composition upon at least one fiber end or lens, the polymeric composition in contact with the sample solution within the chamber and having a detectable response to acid concentrations within the rangemore » of from about 0.1 Molar to about 16 Molar, a measurer for the response of the polymeric composition in contact with the sample solution, and, a comparer of the measured response to predetermined standards whereby the acid molarity of the sample solution within the chamber can be determined. Preferably, a first lens is attached to the end of the fiber optic light source, the first lens adapted to collimate light from the fiber optic light source, and a second lens is attached to the end of the fiber optic collector for focusing the collimated light after transmission through the chamber.« less
  • A method for suppressing light gas production in a cracking process by dispersing in the feed low concentrations of a highly siliceous material having high surface area and low acidity prior to cracking. Because of the high surface area-to-volume ratio of the particles, the catalyst acts as a free radical scavenger which reduces the amount of light gas produced by free radical-promoted reactions.
  • A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650/sup 0/ F.+ material which is characterized by containing material which will not boil below about 1025/sup 0/ F., a carbon residue on pyrolysis of at least about 2, and a nickel plus vanadium content of at least about 4 parts per million. This process comprises adding an additive to the feedstock consisting of a compound containing titanium, zirconium, or aluminum so as to restore cracking activity of high metal contaminated and deactivated, zeolite containing catalysts, resulting from processing of these carbo-metallic oils.
  • A process for economically converting carbo-metallic oils to lighter products. The carbo-metallic oils contain 650/sup 0/ F. + material which is characterized by containing material which will not boil below about 1025/sup 0/ F., a carbon residue on pyrolysis of at least about 2, and a nickel plus vanadium content of at least about 4 parts per million. This process comprises adding an additive to the feedstock consisting of a compound containing titanium, zirconium, or aluminum so as to restore cracking activity of high metal contaminated and deactivated, zeolite containing catalysts, resulting from processing of these carbo-metallic oils.
  • A process is disclosed for the production of distillate in the catalytic cracking of gas oils utilizing a low acidity high silica-to-alumina ratio large pore zeolite which has been subjected to exchange with alkali metal ions at pH less than or equal to7.