Expand this Topic clickable element to expand a topic
Skip to content
Optica Publishing Group

In situ combustion measurements of CO, H2O, and temperature with a 1.58-µm diode laser and two-tone frequency modulation

Not Accessible

Your library or personal account may give you access

Abstract

An optical near-infrared process sensor for electric arc furnace pollution control and energy efficiency is proposed. A near-IR tunable diode laser has performed simultaneous in situ measurements of CO (1577.96 nm), H2O (1577.8 and 1578.1 nm), and temperature in the exhaust gas region above a laboratory burner fueled with methane and propane. The applicable range of conditions tested is representative of those found in a commercial electric arc furnace and includes temperatures from 1250 to 1750 K, CO concentrations from 0 to 10%, and H2O concentrations from 3 to 27%. Two-tone frequency modulation was used to increase the detection sensitivity. An analysis of the method’s accuracy has been conducted with 209 calibration and 105 unique test burner setpoints. Based on the standard deviation of differences between optical predictions and independently measured values, the minimum accuracy of the technique has been estimated as 36 K for temperature, 0.5% for CO, and 3% for H2O for all 105 test data points. This accuracy is sufficient for electric arc furnace control. The sensor’s ability to nonintrusively measure CO and temperature in real time will allow for improved process control in this application.

© 2002 Optical Society of America

Full Article  |  PDF Article
More Like This
Single-ended mid-infrared laser-absorption sensor for simultaneous in situ measurements of H2O, CO2, CO, and temperature in combustion flows

Wen Yu Peng, Christopher S. Goldenstein, R. Mitchell Spearrin, Jay B. Jeffries, and Ronald K. Hanson
Appl. Opt. 55(33) 9347-9359 (2016)

In situ combustion measurements of CO with diode-laser absorption near 2.3 µm

Jian Wang, Mikhail Maiorov, Douglas S. Baer, Dmitri Z. Garbuzov, John C. Connolly, and Ronald K. Hanson
Appl. Opt. 39(30) 5579-5589 (2000)

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Figures (7)

You do not have subscription access to this journal. Figure files are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Equations (3)

You do not have subscription access to this journal. Equations are available to subscribers only. You may subscribe either as an Optica member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access Optica Member Subscription

Select as filters


Select Topics Cancel
© Copyright 2024 | Optica Publishing Group. All Rights Reserved