34 Air Monitoring Dependable gas fl ow measurement for industrial pollution control and monitoring


The engineering team at a coal-fi red electric power plant utilising ammonia (NH3) for nitrous oxide (NOx) removal by its pollution control system installed the ST100 Series thermal fl ow meter from Fluid Components International (FCI) based on its superior repeatability in measuring NH3 under harsh operating conditions. The ST100 Series fl ow meter allowed the plant team to optimise its selective catalytic reduction (SCR) system. This step improved performance while substantially reducing NH3 consumption and costs. The meter, with its rugged thermal dispersion sensor head, provides a highly repeatable measurement solution to control vaporised NH3 in such applications.


The engineers at the electric power plant were experiencing problems with inconsistent measurement of the vaporised NH3 injected into their fl ue gas as a means to reduce NOx emissions. The original system utilised a volumetric fl ow sensor, which wasn’t well suited for controlling the NH3 gas injection system. Switching to the mass fl ow sensing ST100 Series Meter, as opposed to taking a volumetric measurement, solved the false readings issue. Given the ST100 fl ow meter’s standard wide fl ow turndown ratio of 100:1 (up to 1000:1 based on application), and the ability to measure mass fl ow, instead of volumetric fl ow, the engineers decided to conduct a pilot test. They installed the insertion style ST100A thermal fl ow meters on the primary vaporised ammonia feed lines to their nozzle grid for the test.


With the resulting improved measurement reliability, they took the project one-step further and installed in-line style ST100AL thermal fl ow meters at each of their nozzle locations. After proving out the benefi ts in one operating unit, they eventually instrumented the ammonia injection systems for all of the units within the facility. The ST100 meter can be factory calibrated to measure virtually any popular process gas as well as mixed gases. The technology is suitable for use in wet and dirty gas applications, having no small ports prone to fouling. The basic insertion style air/ gas meter features a thermal fl ow sensing element that measures fl ow from 0.25 up to 1000 SFPS (0.07 NMPS to 305 NMPS) with accuracy of ±0.75 percent of reading, ±0.5 percent of full scale. The basic in-line style meter is available for 2-inch and smaller line sizes.


The ST100 Series meter’s transmitter is unsurpassed in meeting both a plant’s current and future need for outputs, process information and communications. Whether the output required is traditional 4-20 mA analogue, frequency/pulse or advanced digital bus communications such as HART, Modbus, PROFIBUS, or FOUNDATION Fieldbus, the ST100 Series will meet your instrumentation integration needs. Its advanced bus communications are all third party certifi ed and registered. Developed with a graphical, multivariable backlit LCD display, the ST100 Series Meter brings new meaning to the term “process information”. Its sophisticated readout continuously displays all process measurements and instrument status for easy on-site viewing by technicians, and it has the ability to query for service diagnostics via an integral, optical HMI that does not require declassifi cation of hazardous areas.


Designed for extreme industrial process and plant conditions, the ST100 Meter can be used in service up to 850ºF (454ºC) and is available with both integral and remote (up to 1000 feet [300 meters]) electronics versions. The ST100 meter is agency approved for hazardous environments, including the entire instrument, the transmitter and the rugged, NEMA 4X/IP67 rated enclosure.


Global approvals include: ATEX, CPA, CRN, EAC/TRU CU, FM, FMc, FDT, GOST, IECEx, Inmetro and NEPSI. Third party failure rate data per IEC 61508 is available that demonstrates suitability of the hardware architecture for SIL 1 (HFT=0) applications.


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For More Info, email: email:


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Our customers benefit from market leading support, including onsite visits and custom training programmes, all from a friendly and professional team. We make sure you always feel confident with your equipment.


Be the best by working with the best W: www.acsoft.co.uk E: sales@acsoft.co.uk T: 01234 639550 Untitled-2 1 20/12/2021 13:08


NEW GENERATION OF MERCURY CEMS


SM-5


Meet the latest regulations for waste incineration and large combustion plants with the new ENVEA SM-5


✓


✓ ✓ ✓


QAL1 approved to EN 15267 with the lowest range on the market of 0-5 μg/m3


Additional certification ranges: 0-30 / 0-45 / 0-100 / 0-1000 μg/m3


Calibrator-free operation for reliability & reduced operating costs


Short response time and stable measurement under all circumstances


Xavier Zinsch (2nd from the left) and the Amiet family, Jean-Philippe, Patricia and Franck


The two gas specialists will jointly promote and distribute Chromatotec®’s portable analytical systems: the microF analyser for formaldehyde detection and the microVOC and microBTEX for VOC analysis. Combining fast analysis, accuracy and low vector gas consumption, these battery- powered micro-GCs can quantify and qualify compounds continuously and in real-time with a 1 ppb detection limit.


Developed by Chromatotec®, these dependable analytical systems are perfect for indoor air quality measurement in commercial establishments open to the public as well as industrial hygiene applications. Xavier Zinsch will offer these solutions in addition to his existing range of process and emission analysers, total VOCs detectors and MiniPIDs. This collaboration will see the integration of ION Science’s MiniPID sensors into the microVOC and microBTEX from Chromatotec®’s autoGC866 range of transportable analysers.


info@envea.global / +33(0)1 39 22 38 00 / www.envea.global 57102pr@reply-direct.com


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IET JANUARY / FEBRUARY 2022


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New partnership to marry up state-of the-art industrial and indoor air quality measurement technology with leading miniature PID technology


IBAX Partn’AIR will distribute Chromatotec’s microVOC and microF miniature analysers Chromatotec®. The French specialist manufacturers of turnkey solutions for gas and liquid analysis, is proud to announce their collaboration with M. Xavier Zinsch, himself an expert in gas analysis and detection, and an associate in the company IBAX Partn’air. Mr Zinsch also manages ION Science’s French subsidiary.


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