‘High-temperature air-combustion technology’ developed

Institute for Far Eastern Studies (IFES)

At the Third Session of the 13th Supreme People’s Assembly (SPA) held on April 9, Premier Pak Pong Ju of the DPRK Cabinet delivered a progress report on the Cabinet’s performance for the previous year and goals for this year. He said, “High-temperature air-combustion technology and other technologies that do not require the use of heavy oil should be introduced into various fields of the national economy.” As North Korea is a non-oil producing country, such technology would be beneficial. But whether this technology is possible requires careful consideration.

According to various state media reports, “high-temperature air-combustion technology” maintains the internal temperature of the furnace by combusting gas or liquid raw material into the air by heating it to high temperature, wherein high temperature needed at the time is acquired through the gasification of anthracite. Respectively, this technology is also called the high-temperature, air-combustion technology by the gasification of anthracite.

This technique is known as energy-saving advanced technology that manages the thermal efficiency which greatly lowers the heat loss that occurs from the used gas discharge. This technology is characterized by its wide range of application that includes heating of the metal factory that uses heavy oil as fuel, as well as glass melting furnace, furnace refractories (or kilns), pottery baking furnace, and heat treatment furnace.

For the production or heating of rolled steels, application of this technology allows for effective production without the use of heavy fuel oil.

Accordingly, the Ministry of Metal Industry has begun to implement projects with major metal industry enterprises such as Kim Chaek Iron and Steel Complex, Hwanghae Iron and Steel Complex, and Chollima Steel Complex. This technology is being introduced into various enterprises including all steel production process and refractories that use heavy oil.

In 2011, North Korea emphasized “vanguard technological breakthroughs” and constructed heating furnace equipped with high-temperature air combustion technology at the Kim Chaek Iron and Steel Complex for the commemoration of Kim Il Sung’s 100th birthday. It was widely publicized that introduction of this technology has put an end to the steel billets production system that uses heavy fuel oil.

In this regard, Rodong Sinmun reported on January 11 that Kaesong Insulator Factory in North Hamgyong Province succeeded in the complete domestic production of high-speed transfer switch and thermal mass which is the core of the high-temperature air-combustion technology. It also drew particular attention as the news touted that this was the first successful introduction of “large-scale continuous furnace.”

The newspaper boasted that, “the introduction of the high-temperature air combustion technology was introduced with a small investment into the heating furnace and kilns in each sector of the people’s economy,” and evaluated this as a result of “our capabilities and technology that proceeded in accordance with the principles of ‘our-style’ modernization.”

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