Manufacturing of Lime Materials with High Specific Surface Area for Desulfurization

Seok-je Kwon; Young-jin Kim; Yang-soo Kim; Jun-hyung Seo; Jin-sang Cho

doi:10.7844/kirr.2024.33.1.69

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2024 Vol.33, Issue 1 Preview Page

Manufacturing of Lime Materials with High Specific Surface Area for Desulfurization 고비표면적 탈황용 석회소재 제조

28 February 2024. pp. 69-76

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Abstract

In an effort to achieve the goal of carbon neutrality, countries around the world are aiming to phase out coal-fired power plants. Due to various reasons, electricity production through coal-fired power generation and sulfur oxide (SOx) emissions are expected to continue in the future. In the South Korea, sodium bicarbonate (NaHCO₃) and lime materials are used to treat SOx, and most of the sodium bicarbonate is imported. Therefore, this research was conducted to replace sodium bicarbonate by improving the physical properties of lime materials using domestic limestone. Limestone was heat-treated through a box-type electric furnace and a vertical electric furnace. Due to the structural characteristics of the vertical electric furnace, a lime material(quicklime) was possible to improve the physical properties like a specific surface area and a pore volume. Then, they were reached to 22.33 m²/g specific area and 0.14 cc/g pore volume.

Keywords

Desulfurization

Surface Area

Limestone

Heat Treatment

Quicklime

탄소중립 목표 달성을 위한 노력으로 세계적으로 석탄화력발전소의 단계적 폐지를 목표로 하고 있지만, 다양한 원인으로 인해 화력발전을 통한 전력 생산과 황산화물(SOx)의 배출은 앞으로도 지속될 것으로 예상한다. 국내에서는 황산화물 처리를 위해 중조(NaHCO₃)와 석회소재를 사용하며 중조는 대부분 수입에 의존하고 있다. 따라서 국내 대표적인 부존자원인 석회석을 이용하여 석회소재의 물성 향상을 통해 중조를 대체하기 위한 연구를 수행하였다. 석회석은 박스형 전기로와 수직형 전기로를 통해 열처리했으며, 수직형 전기로가 가진 구조적 특징에 의해 비표면적 22.33 m²/g, 세공용적 0.14 cc/g의 생석회를 제조하여 석회소재의 물성을 향상 시킬 수 있었다.

키워드

탈황

비표면적

석회석

열처리

생석회

References

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Information

Publisher :The Korean Institute of Resources Recycling
Publisher(Ko) :한국자원리싸이클링학회
Journal Title :Resources Recycling
Journal Title(Ko) :자원리싸이클링
Volume : 33
No :1
Pages :69-76
Received Date : 2024-02-07
Revised Date : 2024-02-19
Accepted Date : 2024-02-20
DOI :https://doi.org/10.7844/kirr.2024.33.1.69

Resources Recycling ISSN:2765-3439(Print) 2765-3447(Online) 자원리싸이클링

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