Desulfurization Characteristics in High-Temperature Powder-Particle Fluidized Bed Desulfurizer.

• TASHIMO TSUTOMU

  Deptartment of Biological & Chemical Engineering, Gunma University

• MACHIDA HIROSHI

  Deptartment of Biological & Chemical Engineering, Gunma University

• MATSUMOTO YUKIKO

  Deptartment of Biological & Chemical Engineering, Gunma University

• NAKAGAWA NOBUYOSHI

  Deptartment of Biological & Chemical Engineering, Gunma University

• KATO KUNIO

  Deptartment of Biological & Chemical Engineering, Gunma University

Bibliographic Information

Other Title

• 粉粒流動層型高温脱硫装置の脱硫特性
• フンリュウ リュウドウソウガタ コウオン ダツリュウ ソウチ ノ ダツリュウ

Abstract

Desulfurization efficiency in the powder-particle fluidized bed desulfurizer is investigated in three Ca -based sorbent powders limestone, dolomite and scallop shell. The effects of reaction temperature, diameter of the fine sorbent, bed height of medium particles, gas velocity, CO₂ concentration of fluidizing gas, and molar ratio of carbonates to inlet SO₂ (Ca/S or (Ca + Mg)/S) on desulfurization efficiency are investigated. The specific surface area and pore size distribution of these sorbents before and after calcination or desulfurization are also measured.<BR>The desulfurization efficiency of each sorbent is affected by each operating condition, except for that of scallop shell, being hardly affected by CO₂ concentration of the fluidizing gas. Scallop shell powder exhibits the highest desulfurization efficiency. The calcined pore size of scallop shell has a peak pore diameter of about 400 Å, whereas the peaks for the calcined limestone and dolomite are around 80 Å. From this investigation it is suggested that the large size of pores in the calcined sorbent relates to high desulfurization activity.

Journal

• KAGAKU KOGAKU RONBUNSHU

  KAGAKU KOGAKU RONBUNSHU 24 (2), 324-328, 1998

  The Society of Chemical Engineers, Japan

Keywords

• powder-particle fluidized bed
• dry desulfurization
• fine particle
• pore-size distribution
• desulfurization sorbent

Details

• CRID: 1390001204509987328
• NII Article ID: 10002835470
• NII Book ID: AN00037234
• DOI: 10.1252/kakoronbunshu.24.324
• COI: 1:CAS:528:DyaK1cXhvVGhtrc%3D
• ISSN: 13499203
• ISSN: 0386216X
• ISSN: http://id.crossref.org/issn/0386216X
• NDL BIB ID: 4424769
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I4424769
• Web Site: http://www.jstage.jst.go.jp/article/kakoronbunshu1975/24/2/24_2_324/_pdf
• Text Lang: ja
• Data Source:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• Abstract License Flag: Disallowed