Development of Effective Dry Desulfurization by a Powder-Particle Fluidized Bed

粉粒流化床有效干法脱硫的研制

• 批准号: 05555205
• 负责人: KATO Kunio
• 金额: $ 4.93万
• 依托单位: Gunma Univ.
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Developmental Scientific Research (B)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05555205/
• 关键词: Powder Particle Fluidized Bed; Dry Desulfurization; Fine Particle; Limestone; Protection of Air Polution; Lime; Fluidized Bed; 流動層; 脱硫; 環境防止技術; 公害防止技術

Head investigator invented a new type of fluidized bed for the treatment of fine particle, this is, powder particle fluidized bed (PPFB). In the PPFB,fine particle less than 50mum particles feed to the bed and are fluidized with coarse particles and only the fine particles are entrained from the bed continously. The fluidizing coarse particles prevent the fine particle from agglomeration and fine particles adhere on the surface of the coarse particles and the fine particles have very long residence time in the bed. In this study desulfurization of 500-1000PPM SO_2 gas with fine limestone, dolomite and lime particles was carried out in a laboratory scale powder particle fluidized bed. The effects of desulfrization material, the size of the materials, reaction temperature, the residence time of gas and Ca/S ratio upon the SO_2 conversion was investigated. When fine limestones less than 5mum were fed to the bed in Ca/S=2.5 and were fluidized with coarse particles at the average gas residence time of 0.1 (S), more than 95% SO_2 conversion was obtained. About 100% of SO_2 conversion was obtained in the case where fine lime particles were fed to the bed.

首席研究员发明了一种处理细颗粒的新型流化床，这就是粉末颗粒流化床（PPFB）。在PPFB中，小于50mum的细颗粒进入床层并与粗颗粒流化，只有细颗粒连续地从床层中被带出。流态化粗颗粒防止细颗粒团聚，细颗粒粘附在粗颗粒表面，细颗粒在床上停留时间很长。在实验室规模的粉状颗粒流化床中，采用细粒石灰石、白云石和石灰颗粒对500-1000PPM SO_2气体进行了脱硫试验。考察了脱硫物料、物料粒度、反应温度、气体停留时间和Ca/S比等因素对SO_2转化率的影响。在Ca/S=2.5的条件下，将小于5mum的细灰岩送入床层，与粗颗粒在平均气体停留时间为0.1 (S)的条件下进行流化，可获得95%以上的SO_2转化率。在向床层添加细石灰颗粒的情况下，SO_2转化率达到100%左右。

项目成果

K.Kato: "Development of High Effective Dry Desulfurization by a Powder Particle Fluidized Bed" Fuel and Combustion. 62. 412-417 (1995)

K.Kato：“粉末颗粒流化床高效干法脱硫的开发”燃料和燃烧。

K. Kato, H. Sakamoto, H. Sakurai T.Takarada and N. Nakagawa: "Development of Effective Dry Sulfurizer with a Powder Particle Fluidized Bed" Fluidization 94 Science and Technology Conference Paper with Fifth China-Japan Symposium. 275-281 (1994)

K. Kato、H. Sakamoto、H. Sakurai T.Takarada 和 N. Nakakawa：“开发具有粉末颗粒流化床的有效干法硫化剂”第五届中日研讨会流化 94 科学技术会议论文。

K.Kato,H.Sakamoto,H.Sakurai and N.Nakagawa: "Dry Desulfurization by Powder-Particle Fluidized Bed" Proceedinge of 4th Asian Conference Fluidized Bed and Three-Phase Reaction. 199-204 (1994)

K.Kato，H.Sakamoto，H.Sakurai和N.Nakakawa：“粉粒流化床干法脱硫”第四届亚洲流化床与三相反应会议论文集。

K. Kato, H. Sakamoto, H. Sakurai, T. Takarada and N. Nakagawa: "Development of Effective Dry Sulfurizer with a Powder Particle Fluidized Bed" Fluidization 94 Science and Technology Conference Paper with Ffth China-Japan Symposium. 275-281 (1994)

K. Kato、H. Sakamoto、H. Sakurai、T. Takarada 和 N. Nakakawa：“开发具有粉末颗粒流化床的有效干法硫化剂”第五届中日研讨会流化 94 科技会议论文。

K.Kato, H.Sakamoto, H.Sakurai, T.Takarada and N.Nakagwa: "Development of Effective Dry Desulfurizer with a Powder Particle Fluidized Bed" Fluidization 94 Science and Technology Conference Paper with Fifth China-Japan Symposium. 275-281 (1994)

K.Kato、H.Sakamoto、H.Sakurai、T.Takarada 和 N.Nakagwa：“开发有效的粉末颗粒流化床干式脱硫剂”第五届中日研讨会流态化 94 科技会议论文。