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PRPC Refinery & Cracker to Install Three DuPont™ MECS® DynaWave® Scrubbers

PRPC Refinery & Cracker to Install Three DuPont™ MECS® DynaWave® Scrubbers


PRPC Refinery & Cracker to Install Three DuPont™ MECS® DynaWave® Scrubbers

DuPont™ MECS® DynaWave® technology, licensed by MECS, Inc., a wholly owned subsidiary of DuPont, has been selected by a major international oil and gas services provider for the installation of three custom-engineered scrubbing systems for sulphur dioxide removal at PRPC Refinery & Cracker Sdn. Bhd, a subsidiary of PETRONAS, the Malaysian National Oil Company. The DynaWave® units are set to be delivered to the company’s RAPID Project refinery in Pengerang, Southern Johor, Malaysia, before the end of the year for subsequent fitting.

“Each of the specially engineered DynaWave® scrubbers will treat the off-gas of one Sulphur Recovery Unit (SRU) and its dedicated Tail Gas Treatment Unit (TGTU),” said Angus Yip, MECS sales manager for South East Asia & Australia – New Zealand. “PRPC requires SO2 emission levels to be lower than 150mg/DNm3 which DynaWave® technology can guarantee under any given set of upstream conditions. Malaysia is now the second country in Asia Pacific and the first in South East Asia to benefit from the added reliability that DynaWave® technology can offer for SRU emissions control and air quality improvements.”

All three DynaWave® scrubbers consist of two reverse jet stages located in an inlet barrel which is connected to a disengagement vessel. They are capable of handling high inlet acid levels, which make it possible to bypass upstream TGTUs while still meeting and even exceeding regulatory emissions requirements. DynaWave® scrubbers can be designed to cope with inlet temperatures of up to 1200°C, but for PRPC the choice fell on optimizing heat recuperation from the incinerator so that these DynaWave® scrubbing units will take incoming gas at around 300-350°C.

The RAPID (Refinery and Petrochemicals Integrated Development) project represents a significant investment of US$16 billion for PRPC. Scheduled for completion in 2019, it is expected to be capable of processing 300,000 barrels per day (bpd) and will operate three 470 metric tons per day (mtpd) sulphur recovery units.

Over the last 40 years, DynaWave® technology developed by DuPont and licensed by MECS has been successfully installed and used at more than 400 sites around the world in different industries. In the Oil & Gas industry alone, DuPont Clean Technologies, which licenses both the DynaWave® scrubber technology and the Belco® EDV® Scrubber technology, has more than 150 successful wet scrubbing references around the globe. The large nozzles and open vessel design of the DynaWave® scrubbers result in units that are virtually plug proof and able to handle any possible sulphur particulate entrainment. This results in higher on-stream time and lower maintenance and operational expenditures for the refinery.

MECS, Inc. (MECS) is the world leader in sulphuric acid plant and environmental technologies, providing engineering design, services and high-performance products for the phosphate fertilizer, oil and gas, chemical and non-ferrous metals industries. Specific to the oil and gas industry, MECS offers unique state-of-the-art solutions for treating sour off-gas from amine treaters and sour water strippers to achieve ultra-low emissions specifications. In place of or in addition to traditional Claus SRU / TGTU facilities, these solutions can incorporate wet-gas scrubbing (DynaWave®), direct wet-gas conversion to sulphuric acid (SULFOX™), and/or regenerative recovery of SO2 (SolvR™). MECS is a wholly owned subsidiary of DuPont.

The DuPont Clean Technologies division applies real-world experience, history of innovation, problem-solving success, and strong brands to help organizations operate safely and with the highest level of performance, reliability, energy efficiency and environmental integrity. The Clean Technologies portfolio includes STRATCO® alkylation technology for production of clean, high-octane gasoline; IsoTherming® hydroprocessing technology for desulfurization of motor fuels; MECS® sulfuric acid production and regeneration technologies; BELCO® air quality control systems for FCC flue gas scrubbing, other refinery scrubbing applications and marine exhaust gas scrubbing; MECS® DynaWave® technology for sulfur recovery and tail gas-treating solutions; and a comprehensive suite of aftermarket service and solutions offerings. Learn more about DuPont Clean Technologies at

DuPont (NYSE: DD) has been bringing world-class science and engineering to the global marketplace in the form of innovative products, materials and services since 1802. The company believes that by collaborating with customers, governments, NGOs and thought leaders we can help find solutions to such global challenges as providing enough healthy food for people everywhere, decreasing dependence on fossil fuels, and protecting life and the environment. For additional information about DuPont and its commitment to inclusive innovation, please visit

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