August 04, 2020
KCNA Pyongyang Times

New waste gas treating method introduced

Date: 01/07/2020 | Source: Pyongyang Times | Read original version at source

Pak Kon Sik, professor and PhD at Hamhung University of Chemical Industry, has developed and introduced a new method of treating waste gas from the nitric acid production process in the Hungnam Fertilizer Complex by way of absorption.

It has been ten years since he initiated research to overcome the shortcomings of existing methods related to the removal of nitrogen oxides contained in waste gas and establish a rational treatment method.

In the course of making detailed investigations into and analyses of hundreds of old documents and relevant technical data, he brought out a fresh and unique idea conducive to effectively recycling nitrogen oxides.

He conducted hundreds of rounds of experiments so as to reprocess nitrogen oxides while preventing environmental pollution.

According to him, the method of ammonium nitrate-ammonia solution was invented for the first time in the DPRK. It is to make the absorption treatment of waste gas from the nitric acid production process using ammonium nitrate-ammonia solution and recycle nitrogen oxides.

Through years of introduction test, the method has been confirmed to be helpful in reusing almost all useful elements on the basis of simple process and easy operation.

While engaging in the education of students for nearly 50 years, he came up with a large number of scientific research findings.

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