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Influence of sulphur addition on emissions of organic substances during combustion; Inverkan av formen av svaveladditiv paa emissionerna av kolmonoxid och organiska aemnen vid foerbraenning

Abstract

Reduction of emissions of carbon monoxide and organic substances by injecting either ammonium sulphate or elemental sulphur and the importance of the point of injection has been investigated in full scale in a grate-fired bark boiler. The effect was monitored downstream of the economizer and air preheater, immediately upstream of the electrostatic precipitator. Concentrations determined in the comprehensive monitoring program include principally carbon monoxide, TOC and several organic substances, including PAH, PCDD/F and polychlorinated benzenes (PCBz). Additionally, the gaseous PAH were determined on-line using a novel mass spectrometer, REMPI-TOF MS, that measures specifically the 2- to 4-ring PAH's. All concentrations of substances of interest here fluctuate in concert and peak simultaneously. The relationship between the concentrations is not straightforward: there appears to be a threshold in carbon monoxide concentration. Below this threshold, the concentration of organics is low and above it concentrations increase rapidly with increasing carbon monoxide concentration. It has been confirmed that using sulphur additives not only reduces the concentration of carbon monoxide, but also that of organic substances in the flue gases. These additives do not only reduce the mean level of concentrations, but also dampen the fluctuations in these concentrations. Any measure leading to a reduction  More>>
Publication Date:
Feb 15, 2008
Product Type:
Technical Report
Report Number:
VARMEFORSK-1049
Resource Relation:
Other Information: 20 refs., 39 figs., 19 tabs. Figures and tables with text in English
Subject:
09 BIOMASS FUELS; FUEL ADDITIVES; SULFUR; AMMONIUM SULFATES; EMISSION; CARBON MONOXIDE; POLYCYCLIC AROMATIC HYDROCARBONS; ORGANIC MATTER; BARK; BIOFUELS; AIR POLLUTION ABATEMENT
OSTI ID:
928111
Research Organizations:
Vaermeforsk, Stockholm (SE)
Country of Origin:
Sweden
Language:
Swedish
Other Identifying Numbers:
Other: Project Vaermeforsk-A06-212; ISSN 1653-1248; ISSN 1653-1248; TRN: SE0807134
Availability:
Also available from: http://www.varmeforsk.se; OSTI as DE00928111
Submitting Site:
SWD
Size:
116 pages
Announcement Date:
May 19, 2008

Citation Formats

Bjurstroem, Henrik, Jonsson, Claes, Almark, Matts, Berg, Magnus, Streibel, Thorsten, and Zimmermann, Ralf. Influence of sulphur addition on emissions of organic substances during combustion; Inverkan av formen av svaveladditiv paa emissionerna av kolmonoxid och organiska aemnen vid foerbraenning. Sweden: N. p., 2008. Web.
Bjurstroem, Henrik, Jonsson, Claes, Almark, Matts, Berg, Magnus, Streibel, Thorsten, & Zimmermann, Ralf. Influence of sulphur addition on emissions of organic substances during combustion; Inverkan av formen av svaveladditiv paa emissionerna av kolmonoxid och organiska aemnen vid foerbraenning. Sweden.
Bjurstroem, Henrik, Jonsson, Claes, Almark, Matts, Berg, Magnus, Streibel, Thorsten, and Zimmermann, Ralf. 2008. "Influence of sulphur addition on emissions of organic substances during combustion; Inverkan av formen av svaveladditiv paa emissionerna av kolmonoxid och organiska aemnen vid foerbraenning." Sweden.
@misc{etde_928111,
title = {Influence of sulphur addition on emissions of organic substances during combustion; Inverkan av formen av svaveladditiv paa emissionerna av kolmonoxid och organiska aemnen vid foerbraenning}
author = {Bjurstroem, Henrik, Jonsson, Claes, Almark, Matts, Berg, Magnus, Streibel, Thorsten, and Zimmermann, Ralf}
abstractNote = {Reduction of emissions of carbon monoxide and organic substances by injecting either ammonium sulphate or elemental sulphur and the importance of the point of injection has been investigated in full scale in a grate-fired bark boiler. The effect was monitored downstream of the economizer and air preheater, immediately upstream of the electrostatic precipitator. Concentrations determined in the comprehensive monitoring program include principally carbon monoxide, TOC and several organic substances, including PAH, PCDD/F and polychlorinated benzenes (PCBz). Additionally, the gaseous PAH were determined on-line using a novel mass spectrometer, REMPI-TOF MS, that measures specifically the 2- to 4-ring PAH's. All concentrations of substances of interest here fluctuate in concert and peak simultaneously. The relationship between the concentrations is not straightforward: there appears to be a threshold in carbon monoxide concentration. Below this threshold, the concentration of organics is low and above it concentrations increase rapidly with increasing carbon monoxide concentration. It has been confirmed that using sulphur additives not only reduces the concentration of carbon monoxide, but also that of organic substances in the flue gases. These additives do not only reduce the mean level of concentrations, but also dampen the fluctuations in these concentrations. Any measure leading to a reduction in carbon monoxide will also decrease the concentration of most organics, under the conditions prevalent in this boiler. Both additives tested are equally effective per kg of pure sulphur. The point of injection, in the fuel or above the grate, is not important. The PCDD/F concentration in the flue gases is very low even without additives, and the effect of sulphur on these emissions is therefore difficult to observe. Here, the effect is masked by the variation of data. The PAH concentration is lowered by an injection of sulphur additives. The variation in data is though rather large, which may be caused by variation in particle content in the gas samples}
place = {Sweden}
year = {2008}
month = {Feb}
}