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Global Product Manager - Power, Combustion and Environmental

Derek Stuart has more than 25 years' experience in industrial gas measurements. As a product development specialist, he was responsible for the design of several continuous emissions monitors, including the successful 4500 opacity monitor which is used to monitor particulate matter emissions in stack gases worldwide. He is a Chartered Physicist, a member of ASTM with contributions to several ASTM standards, and holds two patents in the field of opacity monitoring.

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Five Uses for Portable Flue Gas Analysers

Monday, November 1, 2021 | Derek Stuart

Products

Fixed flue gas analysers measure emissions of gaseous pollutants from large combustion sources such as power plants and industrial boilers. They continuously provide data 24 hours per day for extended periods, but they are bulky and expensive.
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Measuring Boiler Tube Temperature

Thursday, September 30, 2021 | Derek Stuart

Industry

Boilers are used in many industrial applications ranging from power generation to municipal waste incineration as well as district heating.
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Viewing Fuel Flow in a Stoker-fired Boiler

Wednesday, August 4, 2021 | Derek Stuart

Industry

Stoker-fired boilers are used in many applications with thermal capacities below 50 MW. In these boilers, the fuel is fed by a stoker onto the grate, where it is ignited by heat from the refractory above. As the fuel travels down the grate, it continues to burn, with primary air coming from below.
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Viewing Fuel Flow in a Fluidized Bed

Thursday, July 15, 2021 | Derek Stuart

Industry

Fluidized bed boilers are used in many applications where fuels are difficult to burn. In these boilers, fuel particles are suspended in a hot, bubbling fluidity bed of ash and other particulate materials (sand, limestone etc.) through which jets of air are blown to provide the oxygen required for combustion or gasification.
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Can I Mount my Opacity Monitor on a Positive-Pressure Duct?

Wednesday, April 7, 2021 | Derek Stuart

Products

Opacity monitors are used to measure emissions of smoke and dust from combustion sources. They are mounted directly onto the stack or duct, so a constant flow of purge air is needed to protect their delicate optics from the hot, dusty, and corrosive stack gases.
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How Much Purge Air Does My Opacity Monitor Need?

Thursday, February 11, 2021 | Derek Stuart

Products

Opacity monitors are used to measure emissions of smoke and dust from combustion sources. It is a non-contact measurement, with only a light beam penetrating into the combustion gases in the stack or duct, so the delicate optical and electronic components can be mounted in the ambient conditions.
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The Pros and Cons of Particulate Matter Monitors

Tuesday, December 1, 2020 | Derek Stuart

Industry

Most large-scale combustion processes need to measure the amount of particulate matter (PM) leaving their stack. The main exceptions are those burning natural gas, which is assumed to contain no particles. AMETEK Land offers three instruments which measure PM – the 4500 MkIII, 4650-PM and 4750-PM.
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What is Your Plan if Your Opacity Monitor Stops Functioning, and You Can’t Operate Without One?

Friday, October 30, 2020 | Derek Stuart

Industry

The 4500 MkIII opacity monitor from AMETEK Land is designed to give many years of reliable operation but sometimes breakdowns can happen. Many processes are not permitted to operate without a functioning opacity monitor, so it is important to have a plan in place for any downtime.
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How to Control Combustion and Monitor Emissions and Particulates for the Steelmaking Industry

Tuesday, September 1, 2020 | Derek Stuart

Industry

Combustion operations during steel production processes produce emissions which are subject to strict environmental regulations. Monitoring and controlling these emissions is a regulatory requirement, and also provides process efficiency benefits.
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How to Improve Combustion Efficiency with an Acid Dewpoint Temperature Monitor

Thursday, April 23, 2020 | Derek Stuart

Application Industry

The operator of a coal-fired power plant must manage a large number of parameters to keep the unit operating safely, reliably and efficiently. Maximizing power output and combustion efficiency whilst minimizing emissions of pollutants are the key tasks.
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