Process Development of Effective Semi-Dry Flue Gas Desulfurization by New Type of Fluidized Bed (Powder Particle Spouted Bed)

新型流化床（粉粒喷动床）高效半干法烟气脱硫工艺开发

• 批准号: 08555185
• 负责人: KATO Kunio
• 金额: $ 3.46万
• 依托单位: GUNMA UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08555185/
• 关键词: Flue Gas Desulfurization; Semi-Dry Flue Gas Desulfurization; Fine Particles; Fluidization; Powder Particle Fluidized Bed; Drying; Calcium Hydroxide; Slurry; 噴流層

To develop a new type of semi-dry flue gas desulfurization process, powder particle spouted bed (PPSB) was applied to low temperature desulfurization process. The coarse particles of average diameter of 400-1000mum were fluidized with gas involing 500-1500ppm SO_2 at the constant temperature of 120-200ﾟCThe slurry of SO_2 sorbent like slaked lime are continuously fed to the bed. SO_2 gas reacted with SO_2 sorbent in the reactor and the reacted sorbent was entrained from the reactor and collected by the bag filter.The effects of kind and size of SO_2 sorbent, approach to saturation temperature, Ca/S ratio reaction temperature and gas velocity on SO_2 removal were investigated.SO_2 removal was strongly affected by kind and size of SO_2 sorbent, Ca/S ratio, approach to saturation temperature, that is, the temperature of reactor- wet bulb temperature.If the approach to saturation temperature is small, the evaporation rate of water in the reactor becomes slow and very fast reaction between dissolved SO_2 sorbent in water and SO_2 gas plays main part of this reaction.When the slaked lime was used as SO_2 sorbent, more than 95% of SO_2 removal was obtained in the case where Ca/S ratio is larger than 1.2 and the approach to saturation temperature is smaller than 13K.

为开发新型半干法烟气脱硫工艺，将粉末颗粒喷动床（PPSB）应用于低温脱硫工艺。平均粒径为400- 1000 μ m的粗颗粒，在120-200 ℃恒温条件下，与含SO_2量为500- 1500 ppm的气体一起流化。研究了SO2吸收剂的种类和粒径、接近饱和温度、Ca/S比、反应温度和气速等因素对脱硫效果的影响，结果表明，SO2吸收剂的种类和粒径、Ca/S比、接近饱和温度、反应温度和气速等因素对脱硫效果影响较大，接近饱和温度，即反应器的温度-湿球温度。如果接近饱和温度很小，反应器中水的蒸发速率变慢，溶解在水中的SO_2吸收剂与SO_2气体之间的快速反应是这一反应的主要部分，当使用消石灰作为SO_2吸收剂时，当Ca/S比大于1.2，接近饱和温度小于13 K时，脱硫率可达95%以上。

项目成果

郭 啓民, 岩田 憲明, 加藤 邦夫: "粉粒流動層による半乾式高効率脱硫装置の開発" 化学工学論文集. 22No.6. 1400-1407 (1996)

郭敬民、岩田纪明、加藤邦夫：“粉末流化床半干法高效脱硫装置的开发”，《化学工程学报》22No.6（1996）。

Qimin Guo, Noriaki Iwata and Kunio Kato: "Process Development of Semi-Dry Flue Gas Desulfurization by a Powder Particle Spouted Bed" Kagaku Kogaku Ronbunsyu. 22, No.6. 1400-1407 (1996)

郭启民、岩田纪明和加藤邦夫：“粉末颗粒喷动床半干法烟气脱硫工艺开发” Kagaku Kogaku Ronbunsyu。

Qimin Guo, Misaki Kubota and Kunio Kato: "Process Development of Effective Semi-Dry Flue Gas Desulfurization by a Powder Particle Spouted Bed" The 6th China-Japan Symposium on Fluedezation, Beijing, China, Oct.9-11. (Proceeding). 103-108 (1997)

郭启民、Misaki Kubota 和 Kunio Kato：“粉末颗粒喷动床有效半干法烟气脱硫的工艺开发”第六届中日氟化研讨会，中国北京，10 月 9 日至 11 日。

郭啓民, 久保田みさき, 加藤邦夫: "粉粒流動層半乾式法の脱硫率及び脱硫剤の利用率に及ぼす諸操作条件の影響" 第2回流動層シンポジウム. 126-133 (1996)

郭敬民，久保田美咲，加藤邦夫：“半干粉流化床工艺中操作条件对脱硫效率和脱硫剂利用率的影响”第二届流化床研讨会126-133（1996）。

Q.Guo, M.Kubota and K.Kato: "Process Development of Effective Semi-Dry Flue Gas Desulfurization by a Powder Particle Spouted Bed" The 6th China-Japan Symposium on Fluidization Beijing China Oct.9〜11. 103-108 (1967)

Q.Guo，M.Kubota和K.Kato：“粉末颗粒喷动床有效半干法烟气脱硫的工艺开发”第六届中日流态化研讨会中国北京10月9日〜108日（ 1967）