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Measurement and Testing Future-proof gas analysis technology for maritime emission monitoring


Without a doubt, international shipping on the world’s oceans and inland waterways contributes measurably to greenhouse gas and pollutant emissions. Their propulsion engines predominantly burn fuels with high sulphur content and generally lower purity. This problem has been recognised, and the transformation of ship propulsion systems is being initiated worldwide. Accordingly, stricter emission limits have been set and are being implemented successively. The International Maritime Organization (IMO) establishes environmental protection regulations for maritime shipping in the “International Convention for the Prevention of Pollution from Ships” (MARPOL Convention).


Similarly, this transformation process will undoubtedly extend over decades, as it is economically nearly impossible for many countries to retrofi t their fl eets in a short period. Similarly, it is unrealistic to provide large numbers of low-emission or even emission-free propulsion systems within a few years.


Since inaction is not an option, efforts began some time ago to signifi cantly reduce both the pollutant content in fuels and the emissions from ship engines using appropriate exhaust gas cleaning systems.


Exhaust gas scrubbers are often used for this purpose. These devices dissolve gaseous pollutants in water and discharge them directly into the sea. When these scrubbers operate in an open-loop system, the problem is shifted from the air to the water. Therefore, ongoing efforts are being made to develop improved exhaust gas cleaning methods, one of which is to


operate scrubbers in a closed-loop system. Here, the wastewater is collected and disposed of on land.


Whatever may be considered the lesser evil in exhaust gas cleaning, the environmental regulations mandate compliance and monitoring of permissible limit values. This necessitates exhaust gas analysis systems specifi cally designed for ship operations and approved by classifi cation societies.


Bühler Technologies has long been active in this application area, offering a comprehensive programme ranging from gas sampling points and measurement gas transport to conditioning and analytical evaluation. The newest member of this family is the BA 3 MA analyser.


This device has DNV certifi cation according to test specifi cation CG 03 339 and is approved in accordance with regulation MEPC 259(68). It quickly provides all critical parameters for monitoring


emissions on ships. These include the measurement of SO2 (NDUV with a range of 0-100 ppm) and CO2 of 0-10 vol.-%) and the SO2


/CO2 (NDIR with a range ratio output in ppm/vol.-%. All


status, limit value, and alarm messages are displayed clearly on the touch display and can additionally be output via potential- free relay contacts and Modbus TCP. Measurement values can be retrieved in both analogue and digital form via Modbus TCP.


Regardless of which exhaust gas cleaning methods will prevail, using Bühler Technologies’ marine components, you have a future-proof solution for emissions monitoring in the maritime sector at your disposal.


A leap forward in chemical metering technology


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Milton Roy has announced the launch of the new, ATEX II 2 G Ex h IIC T4/T3 Gb X certifi ed, Primeroyal™ Q series (PQ) chemical metering pump. This cutting-edge addition to the already comprehensive Primeroyal™ range comes with a promise to set a new benchmark for performance in a wide array of industrial applications. The PQ series boasts an extensive and modular API 675 range that includes eight distinct drive sizes and nine advanced liquid end technologies, ensuring unparalleled versatility, and the ability to meet the most demanding hydraulic performance requirements for high fl ows and high discharge pressures.


The Primeroyal™ Q series extends the boundaries of metering pump technology, offering a maximum fl ow rate of 8,657 l/h (2,199 gph) per dosing head and maximum discharge pressure of 1,035 bar (15,011 psi). This remarkable expansion of the Primeroyal™ range caters to a diverse spectrum of customer needs, delivering a robust and adaptable solution designed to excel under the most stringent industrial conditions. Tailored to withstand the rigours of continuous, round-the-clock operation, the Q series is the epitome of reliability and endurance, meeting the demands of 24/7 duties without compromise on performance or precision.


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These metering pumps have been meticulously engineered with three proven liquid end types – packed plunger, PTFE, or metallic diaphragm - that have been the cornerstone of reliability for over two decades within the Primeroyal™ and Milroyal® series. The double diaphragm liquid end technology, coupled with a sophisticated leak detection system, offers superior safety for handling all types of fl uids including critical, toxic, harmful, and explosive process fl uids. Despite its high-spec capabilities, the Q Series is easy to maintain and economical to operate.


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The Primeroyal™ Q series, with its compact and lightweight design with a minimal footprint, provides compliance with API 675 standards for steady state accuracy (±1%), linearity and repeatability (±3%). The high-performance devices have a maximum fl ow rate of 8,657 l/h (2,199 gph) per dosing head, a maximum discharge pressure of 1,035 bar (15,011 psi) and a maximum suction pressure of 371 bar (5,380 psi) dedicated for liquifi ed gases application. The Q Series is built around over two decades of fi eld proven technology and features a leak-free design and large liquid end technology offering packed plunger, PTFE or metallic stainless-steel single/double diaphragm.


The pumps operate in ambient temperatures of -10° to + 50 °C (+14° to +122 °F) in standard, with an optional low temperature model for temperatures of -40°C/-40°F. They offer manual and local stroke length adjustment for precise control of the fl ow rate and remote control of the capacity, through the 4-20mA analogue and feedback signals for modulation. In addition, the Q Series also features multiplexing capabilities, with a maximum of 6 heads and customised PQ solutions are available with many of options for high specifi cations.


A value-added service and an essential element of your contract, the documentation, established by Milton Roy’s contractual documentation competence, guarantees compliance with applicable standards. Available to you, this competence provides a continuous check on conformity and brings together all documents related to purchasing such as: compliance certifi cates, minutes, drawings issued by design offi ce, and data sheets which allow for fl exibility while pursuing potential revisions of the project drawings and documents.


The Primeroyal™ Q pumps are specifi cally designed to cater to the oil and gas sector for high-pressure methanol injection at the wellhead and the injection of corrosion inhibitors and chemicals for refi ned product treatment. The chemical and petrochemical processing sector will also benefi t thanks to its precise dosing of catalysts in polymerisation processes and the power generation industry for high-pressure boiler feed water treatment and more.


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PIN OCTOBER / NOVEMBER 2024


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