Air Monitoring
17
consequently increased from 1M to 2M), in part to NIC SGM-9 higher sensitivity.
Filter analysis always provided Hg values below the instrumental sensitivity limit such as not to generate a quantifi able contribution to the analyzer values.
This work compares the results of 4 test campaigns between a validated AMS and a discontinuous system based on SRM (isokinetic sampling) coupled to a real-time (AA) system for measuring mercury in gaseous form.
The comparison already shows satisfactory agreement and well below the LELs (50 μg/Nm³ d.a.). However, further investigation of the fi eld tests carried out is needed to investigate the deviations found between the two systems.
References Fig 3 - 170640 kg RDF, 46074 kg dry sludge, average over 4 h: 1.12 μg/Nm3
Values of the hourly averages in the sampling periods (approx. 5 hours per campaign) between AMS and SRM with the analyzer remain around 0.5 - 1.0 μg/Nm3 (between 0.5 and 1.0 μg/Nm3
with a very small difference ). The results seem to maintain
constant the AMS / SRM with NIC SGM-9 differences between
Author Contact Details Paolo Lopinto – TCR TECORA®
AMS 0.34 μg/Nm3 , SRM with NIC 100% RDF combustion and different dry sludge combustion loads.
SRM with NIC SGM-9 generally seems to show frequent peaks unlike AMS: this may be due in part to the interaction of NIC SGM-9 with some interfering metals (KOH molarity was
Takaoka M., Domoto S., Oshita K., Takeda N., Morisawa S. Mercury emission from sewage sludge incineration in Japan. Journal of Material Cycles and Waste Management (2012), 14: 113–119.
Wang X., Mao Y. Mercury in Municipal Sewage and Sewage Sludge. Bulletin of Environmental Contamination and Toxicology (2019), 102:643–649.
• Via delle Primule, 16 Cogliate, (MB) 20815, Italy • Email:
paolo.lopinto@tcrtecora.com • Web:
www.tcr-tecora.com/it
Federico Teoldi, Laboratory of Environmental Chemistry and Toxicology, IRCCS • Istituto di Ricerche Farmacologiche Mario Negri, Via Mario Negri 2, 20156 Milan, Italy • Email:
federico.teoldi@marionegri.it
Gas analysis technology plays key role in multi-million-dollar Indonesian
project to reduce hazardous air emissions from terephthalic acid plant Servomex has been instrumental in improving safety at a newly expanded purifi ed terephthalic acid (PTA) facility at Merak, in Indonesia.
INEOS Aromatics Indonesia has completed $70 million of upgrades at its facilities, to signifi cantly reduce emissions and increase capacity, which includes the installation of two vent gas analyser systems from Servomex. These were designed in conjunction with INEOS to deliver enhanced safety and control of the oxidation reactor. Each gas analyzer system includes a pressure reduction pre-sample conditioner enclosure and a SERVOTOUGH OxyExact 2200 – a high specifi cation O2
offers an unrivaled combination of precision, fl exibility and performance for optimum process and safety control. Installing the larger oxidation reactor, reconfi guring the reactor’s heat recovery system and revamping the process air compressor train is expected to reduce the site’s CO2
per cent from 500,000 tonnes to 575,000 tonnes per annum.
The project was successfully secured and delivered by Project Manager Ernesto Torres and Design Engineering Lead Cole Harbour. Shelley Moore, Global Head of Systems at Servomex, said: “Our highly-valued team members of the Systems Engineering group based at Texas ensured the highest quality design and build of the systems and completed the project ahead of schedule to the delight of our customer. “With the continued international strategic approach to winning and executing projects, Servomex is on track to continue satisfying customers and achieving our company goals.”
INEOS Aromatics Indonesia president director, Frank Yang added: “This new, multi-million dollar investment shows our commitment to its future growth. “Installing the larger oxidation reactor supports INEOS’s commitment to producing essential products while reducing emissions to net-zero by 2050.”
The Merak plant has played an important part in the growth of the Indonesian polyester industry. It became part of INEOS as part of its $5 billion acquisition of the BP Petrochemicals business in January 2021.
More information online:
ilmt.co/PL/XZmq For More Info, email:
email:
In addition to standard reference methods, alternative measurement methods are permitted, provided they are proven to be equivalent in accordance with EN 14793. MGAprime-Q fl ue gas emission analyser has been certifi ed as a portable automatic measuring device (P-AMS) according to EN15267-4. This measuring system is the world’s most compact solution, consisting of a complete gas conditioning system with heated gas sampling probe and line, and an analyser with integrated gas cooler and gas analysis modules.
For More Info, email: email:
The analyzer can simultaneously measure nine gas components (O2 , CO, CO2 , NO, NO2 , N2 O, SO2 and NOx , CH4 , C3 H8 ) and additionally the
gas temperature, fl ow velocity with calculation of fl ow rate. The gas components are measured with a paramagnetic sensor and an innovative, infrared (NDIR) measurement technology. Measurements of SO2
meet the requirements of the
standard international reference methods. This eliminates the need for a chemiluminescence detector with an upstream NO2 to NO converter. MQA-Prime-Q’s operates with a drift-free and precise infrared measurement technique, where the cross-
interferences of H2 O and the measured gas components are compensated by software.
The large touch and swipe colour display enables easy, intuitive operation with a variety of graphic options. The measurement data can be transferred via LAN, WLAN, 4-20mA, RS485 and USB stick.
More information online:
ilmt.co/PL/qxv9 For More Info, email:
email: For More Info, email:
56492pr@reply-direct.com
WWW.ENVIROTECH-ONLINE.COM
57756pr@reply-direct.com The certifi ed compact solution
for offi cial emission measurements The MGA-Prime-Q fl ue gas analyser from MRU is P-AMS certifi ed according to DIN EN 15267-4. The certifi cate sets the standard for monitoring of emissions from stationary
sources (QAL3, AST), the EN 15267-4 standard specifi es the requirements which a portable measuring system must meet for offi cial measurements.
analyser which emissions per ton by 15 per cent. The move should also increase site capacity by 15 Federico Teoldi Paolo Lopinto
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