Four-Gas Monitoring (Flue Gas Monitoring - Air and Climate) Articles

Electrofilter protection by fast monitoring of CO in flue gas – Case Study

Electrostatic precipitators Many industrial operations produce exhaust gases that contain dust, fly ash (unburned constituents), fumes (including fine elemental particles such as cadmium, sulfur and lead) and mist (such as coal tar), which cause an unwanted impact to human health and the environment. One widely used method of removing such contaminants from a gas stream is to use an ...

Jan. 1, 2005

By Siemens Industry, Inc. - Process Analytics

NH3 Slip Monitoring in Fluidized-bed Catalytic Cracking Using the LDS 6 Gas Analyzer – Case Study

Fluidized catalytic cracking (FCC) units are used in refineries to convert low value heavy oils into more valuable lighter compounds. Cracking units are sources of emissions of pollutants (e.g. NOx) and must comply with concentration permits set by local or federal authorithies. Modern technologies are applied to reduce the content of pollutants and to monitor certain gas compounds (here: NH3) in ...

Sep. 21, 2017

By Siemens Industry, Inc. - Process Analytics

Axetris achieves Silver Gas Award 2013

Here the original text from G&I: „The Axetris AG LGD F200 self-contained laser gas detector module is designed for integration by original equipment manufacturers (OEMs) of selective catalytic reduction (SCR) systems and monitoring equipment and is based on proprietary technology- enhanced tuneable diode laser spectrometry. The OEM module can measure concentrations from well under ...

Jan. 13, 2018

By Axetris Ag

Total solution: Gas and particulate analysis in Cement industry

Cement plants are increasingly required to install continuous emission monitoring systems (CEMS). While these represent a significant financial outlay, a range of other factors also need to be considered when selecting a suitable CEMS. To the inexperienced, selecting a suitable CEM can mistakenly be considered as simply ensuring that the applicable national regulations (eg MACT in the USA, ...

Oct. 12, 2016

By Environnement S.A Group - envea

Global solution: Gas and particulate analysis in Cement industry

Cement plants are increasingly required to install continuous emission monitoring systems (CEMS). While these represent a significant financial outlay, a range of other factors also need to be considered when selecting a suitable CEMS. To the inexperienced, selecting a suitable CEM can mistakenly be considered as simply ensuring that the applicable national regulations (eg MACT in the USA, ...

Oct. 11, 2016

By Environnement S.A Group - envea

Innovation drives flue gas treatment - Case study

Sharing a common goal, experts in emissions monitoring and emissions abatement have formed a working partnership to develop innovative new materials for treating pollutants in flue gas emissions. ...

Nov. 11, 2016

By Gasmet Technologies Oy

5th-Generation Thermox WDG Flue Gas Combustion Analyzer

"For more than 40 years, we have been a leader in combustion gas analysis," says Mike Fuller, divison VP of sales and marketing and business development for Ametek Process Instruments, "and we believe the WDG-V is the combustion analyzer of the future." WDG analyzers are based on a zirconium oxide cell that provides a reliable and cost-effective solution for measuring excess oxygen in flue gas as ...

Nov. 14, 2014

By Ametek Process Instruments - THERMOX

An analysis of extinction coefficients of particles and water moisture in the stack after flue gas desulfurization at a coal-fired power plant

Two important factors that affect in-stack opacity—light extinction by emitted particles and that by water moisture after a flue gas desulfurization (FGD) unit—are investigated. The mass light extinction coefficients for particles and water moisture, kp and kw, respectively, were determined using the Lambert-Beer law of opacity with a nonlinear least-squares regression method. The ...

Aug. 1, 2011

By Air & Waste Management Association (A&WMA)

Fenton degradation of Cartap hydrochloride: identification of the main intermediates and the degradation pathway

The advanced oxidation of Cartap hydrochloride (Cartap) promoted by the Fenton system in an aqueous medium was investigated. Based on total organic carbon, chemical oxygen demand and high-performance liquid chromatography, the oxidation of Cartap is quite efficient by the Fenton system. Its long chain is easily destroyed, but the reaction does not proceed to complete mineralization. Ion ...

Jun. 29, 2015

By IWA Publishing

Insitu analysis of ammonia slip and water vapor using a tunable diode laser for SCR/SNCR optimization and boiler tube surveillance in power plants

ABSTRACT Environmental Regulations driven by the 1990 Clean Air Act require Power Plants to reduce NOx emissions. SCR's and SNCR's reduce NOx emission by injecting ammonia into the combustion flue gas. which ideally reacts with the NOx to form H?0 and Nj. The efficiency of the SCR SNCR is determined by monitoring the outlet for excess NH3. referred to as NH3 slip. The flue gas sample ...

Sep. 21, 2017

By Siemens Industry, Inc. - Process Analytics

Fenton degradation of Cartap hydrochloride: identification of the main intermediates and the degradation pathway

The advanced oxidation of Cartap hydrochloride (Cartap) promoted by the Fenton system in an aqueous medium was investigated. Based on total organic carbon, chemical oxygen demand and high-performance liquid chromatography, the oxidation of Cartap is quite efficient by the Fenton system. Its long chain is easily destroyed, but the reaction does not proceed to complete mineralization. Ion ...

Jun. 29, 2015

By IWA Publishing

Increasing efficiency and safety of aluminium smelters – Case Study

Energy consumption in aluminium smelters The basis for all modern primary aluminium smelting plants is the same: Aluminium oxide (Alumina) is dissolved in an electrolytic bath of molten cryolite (sodium aluminium fluoride) within a large carbon or graphite lined steel container known as a "pot". An electric current is passed through the electrolyte at low voltage, but very high ...

Jan. 1, 2005

By Siemens Industry, Inc. - Process Analytics

SITRANS SL in-situ analyzer saves cost for a steel plant replacing existing extractive setup – Case Study

The customer Steel industry plants all over the world have multiple processes, most of them emitting CO and CO2 in very high concentrations (tens of %). CO is used as a combustible due to its high calorific value. It is stored in a huge tank before it is used by the power plant next door. CO in such high concentration is explosive in presence of a few molecules of oxygen. Therefore, ...

Sep. 21, 2017

By Siemens Industry, Inc. - Process Analytics

Mercury Control Demonstrations

C1.1 | Halogens and Sulfur in Coals and their Influence on Co-benefit Mercury Capture Bernhard Vosteen | President, Vosteen Consulting Gmbh Not only the range of the coal mercury content itself, but also the range of the native halogen and sulfur contents in coal are of great influence on co-benefit mercury capture, wet and dry. The ...

Sep. 21, 2011

By Energy, Utility & Environment Conference (EUEC)

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