KIMM Solves Particle Pollution in Ulaanbaatar, Mongolia
The Korea Institute of Machinery and Materials (KIMM), the South Korean institute under the jurisdiction of the Ministry of Science and ICT, today announced that by applying Korean technology to old buses, efforts are being made to reduce particulate levels in Ulaanbaatar, the capital of Mongolia, which suffers from high levels of fine dust pollution.
It is the first time that the world’s first plasma burner-based diesel particulate filter (DPF) technology has been applied overseas, following successful field trials and commercialization in South Korea.
Dr. SangJin Park, Chairman of KIMM and the KIMM research team met with officials from the city of Ulaanbaatar, Mongolia on Friday, June 10.
During this visit, discussions were held on cooperative efforts with Ulaanbaatar city public transport authorities and the Mongolian University of Science and Technology to apply technology to reduce particulate emissions. old buses, with the aim of achieving sustainable urban development.
Within the framework of the Ministry of Science and ICT project on scientific and technological support for the use of intellectual property (joint research to solve problems in developing countries, ODA), KIMM carried out a technology development project led by Prof. KIMM/UST Plasma Engineering Department Head Dr. DaeHoon Lee to reduce automobile exhaust emissions in Ulaanbaatar, Mongolia since last year.
In 2019, Mongolia formally requested the Korean government to provide support to reduce particulate emissions from vehicles in Ulaanbaatar. Fine dust pollution in Mongolia is very serious due to the widespread use of substandard heating fuels; a lack of emission reduction technologies in power plants and factories; and a large number of old vehicles still in circulation. In addition, it is difficult to apply existing DPF technologies in Mongolian vehicles due to high sulfur concentrations in fuel sources and low atmospheric temperatures in winter.
The average air pollution concentration in Mongolia in winter is 300-400㎍/㎥, which is more than ten times that of Seoul (20-30㎍/㎥). In 2016, the particle concentration in Mongolia rose to 3320㎍/㎥, the second highest in the world.
The sulfur concentration of Mongolian diesel is over 1000 ppm, which prevents the use of Diesel Oxidation Catalyst (DOC), which is conventional DPF equipment (for reference, in Korea the level is 5 ppm) .
Using a Diesel Particulate Filter (DPF), KIMM’s original Plasma DPF technology captures particulates generated during the diesel engine’s combustion process, before burning and removing them. A temperature of at least 550°C is necessary for this elimination process.
So when the exhaust gas temperature is not high enough during low-speed city or winter driving, a Diesel Oxidation Catalyst (DOC), engine fuel post-injection or separate burners are installed to raise the temperature. temperature accordingly.
Specifically, construction machinery and other special vehicles showed very low exhaust gas temperatures. As a result, when applying conventional burner technologies, it was difficult to apply the DPF itself due to ignition failure or an unstable flame resulting in the generation of white smoke.
To solve these problems, KIMM has developed the world’s first original DPF system that can work stably even in special vehicles, thanks to innovations using plasma burner technology, which has improved the ignition and stability of the burner flame.
This technology has been applied to special military vehicles since 2018 and field tests have demonstrated its ability to mitigate the inconvenience suffered by soldiers due to excessive particle emission.
Since 2021, field tests of this technology have been applied to construction machinery such as mixers and dump trucks, once again confirming significant reductions in white smoke generation. The field trials in Mongolia will be the first of their kind to be conducted overseas.
On Wednesday, June 8, the KIMM research team signed a memorandum of understanding with the Mongolian University of Science and Technology (MUST), a partner institution in this project. Through this agreement, both parties have agreed to continue their cooperative research efforts for successful application of DPF plasma technology in Ulaanbaatar, Mongolia.
“The large-scale application of KIMM’s customized emission reduction technology in Mongolia, where it is difficult to apply conventional DPF technologies, will enhance South Korea’s status as a technologically advanced country and help support the expansion of domestic enterprises overseas,” said the president of KIMM. Dr. SangJin Park. “In the future, KIMM hopes to help improve global particulate pollution issues by providing more advanced technologies to other countries with relatively poor fuel quality and vehicle conditions.”
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