vi UK Focus - Air Monitoring
Perfect Storm for Air Monitoring Technology
Following the Supreme Court’s recent judgement, the new Government will have to take urgent action to reduce urban pollution and to instigate monitoring regimes that are able to demonstrate success or failure of the new measures. This has happened at an ideal time for Air Monitors, who have recently launched technology that is able to do so at a fraction of the cost of traditional monitors.
AQE 2015, the Air Quality and Emissions Show, provided Air Monitors with an ideal opportunity to demonstrate new lightweight, low-power air quality monitoring technology, at a time when political interest in air quality was showing signs of awakening from a deep disinterested slumber. Immediately prior to the event, Air Monitors technology and staff had appeared on Sky News,
helping to explain why 29,000 people die prematurely from air pollution in the UK every year.
Emphasising the advantages of the latest technologies, the Air Monitors stand at AQE 2015 displayed portable and mobile monitors on helium balloons, on a bicycle, on an electric car, and even fitted to a quadcopter. An ITV film crew also visited the Air Monitors stand in preparation for a May issue of ‘Tonight’ focusing on air pollution. Commenting on the success of the AQE event Jim Mills said: “We certainly caught the attention of everyone that visited the show and were delighted with the quality of the enquiries that we received. Our Workshops were also very well attended with high levels of interest in the performance data that we unveiled for AQMesh.
“AQMesh is a new type of air quality monitoring station, offering users almost reference quality data in small wireless, battery- powered, web-enabled ‘pods’ that can quickly and easily be mounted on any lamppost or pole, providing information on the air that people are actually breathing,” Jim added.
Measuring five of the main polluting gases, the latest AQMesh will also be able to measure particulates, and Jim says it is taking the market by storm: “The Supreme Court judgement, the AQE Show, the General Election and heightened media attention have all combined to raise the issue of air pollution and health to a level where we should see some real progress, and happily the technology is ready to help.”
Flue Gas Flow Measurement
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Suitable for measuring flue gas flow rates after both bag filter and electrostatic precipitator arrestment plant, the STACKFLOW 400 is engineered with in-built self-checks and high quality assurance features which satisfy emission release data reporting obligations from a regulatory perspective. Typical applications include waste to energy and incineration plants, emissions from Steel, Chemical and Mineral processing applications, Gas Turbines and Coal-fired Power Plant.
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Approved to stringent QAL1 standards by TUV, as specified in EN-15267-3 and EN-16911-2, the STACKFLOW 400 provides a complete solution for flow measurement according to EN 14181.
Based on PCME’s long experience of particulate emission measurement in industrial applications, the STACKFLOW 400 is suitable for the aggressive monitoring environments found in industrial stacks. In addition, due to the unique extended measurement path (400mm), accurate and increased repeatable measurement is assured. Stack velocity, volumetric flow and pollutant mass release calculations can be achieved when linking the STACKFLOW 400 to gas and dust CEMS.
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PCME’s STACKFLOW 400 is designed specifically to monitor the flow rate of emissions from industrial sources complying with the European Monitoring Standard EN-16911-2.
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Fast Payback from Laser Process Gas Analysers
Quantitech has launched a range of process gas analysers based on tuneable diode laser absorption spectroscopy (TDLAS). “Over 8,000 instruments have been installed around the world, but the manufacturer Focused Photonics Inc (FPi) is new to the UK,” says Quantitech MD Keith Golding.
“By utilising ‘single-line’ spectroscopy, the Laser Gas Analyser (LGA) range can be configured for continuous analysis of a number of key compounds, with an enormous dynamic range from single figure ppm to % levels, without interference from other process components,” he adds.
Typical applications include waste to energy, incineration, ammonia slip control, HCl measurement for sorbent injection optimisation, furnace oxygen, flue gas monitoring in FCC catalyst regeneration, trace H2S and H2O in natural gas, H2S measurements in sulphur recovery, cross-duct CO monitoring for electrostatic precipitator safety, and many others.
“The LGA range of process gas analysers delivers the well-established benefits of TDLAS technology - high specificity, fast response, super-low maintenance, with proven reliability in harsh operating environments and very low ownership costs,” comments Keith. “Developed out of Stanford University California, the cradle of TDLAS commercialisation, FPi was established in China in 2002 and now employs over 3,000 staff. We have visited a number of LGA installations and were very impressed by the standards of quality and reliability being delivered by these instruments.”
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Particulate Emission Measurement System for Wet Stacks
Accurate particulate emission measurement in wet gas stream processes, such as monitoring after wet scrubber abatement systems and processes where the flue gas falls below the dew point or has water droplet presence can be challenging. The PCME QAL 181 WS utilises an extractive approach with heating which overcomes the problem of interference from condensation and water droplets when using an in-situ particulate monitor after wet collectors.
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PCME’s QAL1 approved system incorporates automatic zero and span checks on both the instrument and sample handling system to ensure good quality measurements plus continuous diagnostics permit early diagnosis of any deterioration in system performance. Meeting the requirements of PS-11 and EN 14181, the system is suitable for monitoring the highly abated emissions found after Flue Gas Desulphurisation Plant (FGD) and saturated flue gas which is critical for the application of monitoring emissions from a coal fired power plant fitted with a wet FGD system.
Easy and safe operator access to the measurement volume for external auditing with reference materials proves useful in satisfying AST linearity test requirements for EN 14181 compliance and absolute correlation audit for PS-11 compliance.
Air Quality Monitoring Pods Now Monitor Particles as Well as Gases
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AQMesh is a lightweight, battery powered ambient air quality monitor that transmits data to a dedicated website via the ‘cloud’. Readings are taken at user-selectable intervals between 1 and 15 minutes, and data are normally transmitted hourly by GPRS. Standard AQMesh pods measure nitric oxide (NO), nitrogen dioxide (NO2
to temperature, atmospheric pressure and relative humidity. Carbon monoxide (CO) and sulphur dioxide (SO2
trials, AQMesh can now include the measurement of total particle count, PM2.5 and PM10 using a light-scattering optical particle counter. AQMesh was developed to provide monitoring flexibility and to lower costs, and with the ability to monitor both NO2
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IET Annual Buyers’ Guide 2016/17
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Particulate monitoring technology has been added to the AQMesh air quality monitoring pods. “This is a major development,” says Stephen Hoskin from the Tewkesbury based company Air Monitors. “AQMesh already monitors the most important gases, but fine particulates are one of the pollutants of greatest concern - government figures suggest 29,000 people die prematurely in the UK every year from particle pollution.”
) in addition ) can also be chosen as optional sensors. However, following successful and PM, AQMesh is able to track the pollutants of greatest concern. As a small, battery-
powered, web-enabled unit, the pods can be quickly and simply mounted in locations where air quality matters most, and by transmitting near-live data to websites, AQMesh offers an opportunity to provide air quality information that will have a real effect on people’s lives; helping them to choose a route to work; where to exercise; where to send their children to school, and even where to buy a house.
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