You need JavaScript to view this

Evaluation and comparison of different techniques for monitoring ammonia in flue gas; Utvaerdering och jaemfoerelse av maetteknik foer ammoniak i roekgaser

Technical Report:

Abstract

Since the introduction of deNO{sub x} processes based on injection of ammonia or urea, the determination of ammonia in flue gases has been associated with a lot of uncertainty. Measurement results achieved with different techniques have often given poor agreement with each other, which has led to difficulties for performance evaluations of SCR/SNCR installations. The aim of this project has been to clarify some of the reasons for the observed discrepancies between different measurement techniques. The work has been limited to measurement techniques for gaseous ammonia in clean gas. A general conclusion from testing of continuous measurement systems is that both IR and UV systems can be considered well suited for ammonia analyses in most flue gas applications. However, discrepancies between different measuring systems were found, but these are more likely to be due to the individual instrument design than to a certain measuring principle. Factors such as function of the instrument`s specific evaluation routines, calibration routines, the construction of the sampling system etc proved to be of great importance for the instrument`s performance. The analyses results from the wet chemical measurements were often in good agreement with the results from the continuous measurement systems, although some tests that gave  More>>
Authors:
Johansson, Annika; Harnevie, H; Axelsson, H [1] 
  1. Vattenfall Utveckling AB, Vaellingby (Sweden)
Publication Date:
Oct 01, 1994
Product Type:
Technical Report
Report Number:
SVF-518
Reference Number:
SCA: 540120; PA: SWD-94:007506; EDB-95:016956; SN: 95001301709
Resource Relation:
Other Information: DN: Figures and tables with text in English; PBD: Oct 1994
Subject:
54 ENVIRONMENTAL SCIENCES; AIR POLLUTION MONITORING; MEASURING METHODS; AMMONIA; EVALUATION; FLUE GAS; FIELD TESTS; AIR POLLUTION MONITORS; CHEMICAL ANALYSIS; ABSORPTION SPECTROSCOPY; INFRARED SPECTRA; ULTRAVIOLET SPECTRA; INTERLABORATORY COMPARISONS; BENCH-SCALE EXPERIMENTS; EXPERIMENTAL DATA; 540120; CHEMICALS MONITORING AND TRANSPORT
OSTI ID:
10105733
Research Organizations:
Stiftelsen foer Vaermeteknisk Forskning, Stockholm (Sweden)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
Journal ID: ISSN 0282-3772; Other: ON: DE95723970; CNN: Project Vaermeforsk-B1-317; TRN: SE9407506
Availability:
OSTI; NTIS
Submitting Site:
SWD
Size:
111 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Johansson, Annika, Harnevie, H, and Axelsson, H. Evaluation and comparison of different techniques for monitoring ammonia in flue gas; Utvaerdering och jaemfoerelse av maetteknik foer ammoniak i roekgaser. Sweden: N. p., 1994. Web.
Johansson, Annika, Harnevie, H, & Axelsson, H. Evaluation and comparison of different techniques for monitoring ammonia in flue gas; Utvaerdering och jaemfoerelse av maetteknik foer ammoniak i roekgaser. Sweden.
Johansson, Annika, Harnevie, H, and Axelsson, H. 1994. "Evaluation and comparison of different techniques for monitoring ammonia in flue gas; Utvaerdering och jaemfoerelse av maetteknik foer ammoniak i roekgaser." Sweden.
@misc{etde_10105733,
title = {Evaluation and comparison of different techniques for monitoring ammonia in flue gas; Utvaerdering och jaemfoerelse av maetteknik foer ammoniak i roekgaser}
author = {Johansson, Annika, Harnevie, H, and Axelsson, H}
abstractNote = {Since the introduction of deNO{sub x} processes based on injection of ammonia or urea, the determination of ammonia in flue gases has been associated with a lot of uncertainty. Measurement results achieved with different techniques have often given poor agreement with each other, which has led to difficulties for performance evaluations of SCR/SNCR installations. The aim of this project has been to clarify some of the reasons for the observed discrepancies between different measurement techniques. The work has been limited to measurement techniques for gaseous ammonia in clean gas. A general conclusion from testing of continuous measurement systems is that both IR and UV systems can be considered well suited for ammonia analyses in most flue gas applications. However, discrepancies between different measuring systems were found, but these are more likely to be due to the individual instrument design than to a certain measuring principle. Factors such as function of the instrument`s specific evaluation routines, calibration routines, the construction of the sampling system etc proved to be of great importance for the instrument`s performance. The analyses results from the wet chemical measurements were often in good agreement with the results from the continuous measurement systems, although some tests that gave very different results. From this data, some recommendations for wet chemical analyses have been proposed. One conclusion from the intercalibration is that all of the examined analysis methods (i.e. the indophenol method, ion chromatography and the salicylate method) are well suited for ammonium analyses, provided that the analyses are carried out properly. 20 refs, 39 figs, 27 tabs}
place = {Sweden}
year = {1994}
month = {Oct}
}