Mechanism of carbon dioxide formation in 3130-Ang irradiated mixtures of sulfur dioxide and carbon monoxide

1972 ◽  
Vol 94 (16) ◽  
pp. 5523-5532 ◽  
Author(s):  
Fred B. Wampler ◽  
Abraham Horowitz ◽  
Jack G. Calvert
1976 ◽  
Author(s):  
N. R. Dibelius

The measurement of air pollutants emitted to the atmosphere in exhaust gases from stationary gas turbines must be made in accordance with applicable government specifications in those cases where the measurements are being made to determine compliance with regulations. This paper reviews the methods for measuring opacity, sulfur dioxide, oxides of nitrogen, carbon monoxide, carbon dioxide, oxygen, hydrocarbons, and particulates. In addition, the paper references the Federal Register (volume, number, and page) in which the official specification appears. Other methods, including ASME, SAE, and ASTM, are listed where applicable.


Author(s):  
Brian Swanson

U.S. Federal regulations under Title IV of the Clean Air Act Amendments promulgated in 1990 require continuous monitoring of nitrogen oxides (NOx) and carbon dioxide emissions from large gas turbines. Local, regional, or State authorities may mandate continuous monitoring for carbon monoxide, sulfur dioxide, volatile organic compounds, and other specific pollutant parameters. U.S. regulations that require continuous emissions monitoring systems (CEMS) also allow for the use of predictive approaches as an alternative providing the installed predictive emissions monitoring system (PEMS) meets rigorous performance specification criteria and the site performs ongoing quality assurance tasks such as periodic audits with portable analyzers and annual accuracy testing. A statistical hybrid predictive emission monitoring system (PEMS) has been deployed at numerous sites in the United States to meet EPA requirements for continuous monitoring of gas turbine pollutant emissions. This paper discusses specific implementations of a unique cost-effective statistical hybrid PEMS on various classes of gas turbines ranging in size from 60kW to 180 MW, both gas-fired and liquid-fired units, in simple cycle and combined cycle mode of operation. The turbines were equipped with a variety of NOx control strategies including dry low NOx, steam and water injection, solid post-combustion catalyst, SoLoNOx™, and selective catalytic reduction. In each instance the predictive engine operated on training data of at least three days and up to ninety days as required to develop a robust empirical model of the emissions. Each model was subsequently evaluated using standard U.S. EPA performance specification test methods. The results of PEMS performance testing on these gas turbines are presented along with additional information regarding the quality assurance and quality control procedures put in place and the costs to support the ongoing operation of the deployed compliance statistical hybrid PEMS.


1997 ◽  
Vol 62 (4) ◽  
pp. 609-619 ◽  
Author(s):  
Vlastimil Kubáň

Ammonia (up to 0.3 vol.%) can be determined (RSDs < 2%) after separation from a process gas stream containing (vol.%): carbon dioxide (0.3-20), hydrogen sulfide (< 0.4), hydrogen cyanide (< 1.5 . 10-4), sulfur dioxide (1), carbon monoxide (< 3) in 50-90 vol.% nitrogen and hydrocarbons. The ammonia content in sample is determined through changes in the conductivity of an acceptor stream (3 mM boric acid) caused by absorption of the analyte passed through a Nafion capillary membrane.


1989 ◽  
Vol 54 (2) ◽  
pp. 284-296 ◽  
Author(s):  
Bernd Sumpf ◽  
Dimitrii Göring ◽  
Rainer Haseloff ◽  
Karin Herrmann ◽  
Jens Wolfgang Tomm

The purpose of this paper is to report our results on the detection and spectroscopic parameters of carbon monoxide, carbon dioxide and sulfur dioxide using high resolution linear diode laser spectroscopy with pulsed tunable PbS1-xSex homolasers. The parameters of pulsed diode lasers used in spectroscopy for various gases are discussed. The application of the diode laser spectrometer for CO gas detection at ppm level illustrates the sensitivity of the equipment.


1976 ◽  
Vol 59 (6) ◽  
pp. 1404-1408
Author(s):  
Wilson L Brannon ◽  
Walter R Benson ◽  
George Schwartzman

Abstract The feasibility of examining medicinal gases for trace impurities, using an infrared spectrophotometer in conjunction with a 10 m gas cell, was investigated. Many of the impurities for which the USP includes limits were detected and measured at concentrations at or below those permitted by the USP; these include sulfur dioxide, carbon dioxide, carbon monoxide, and water. However, others (hydrogen sulfide, nitric oxide, and nitrogen dioxide) were not detected at these levels by this technique. Methane was found at low levels in some samples.


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