THE DEVELOPMENT OF ON-LINE MEASUREMENT OF CRYSTAL SIZE DISTRIBUTION ON SULFATE COMPOUND IN FLUIDIZED BED CRYSTALLIZER

流化床结晶器中硫酸盐晶体粒径分布在线测量方法的研制

• 批准号: 11650790
• 负责人: OBATA Eiji
• 金额: $ 1.79万
• 依托单位: MURORAN INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1999
• 资助国家: 日本
• 起止时间: 1999 至 2000
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-11650790/
• 关键词: FLUIDIZATION; CRYSTALLIZER; CRYSTAL GROWTH TATE; SIZE DISTRIBUTION; DISTRIBUTION; ALUMINIUM POTASSIUM SULFATE; POTASSIUM DIHYDROGENPHOSPHATE; AUTOMATON

Materials of this study were Aluminium Potassium Sulfate 12-Water and Potassium Dihydrogenphosphate. The rates of crystal growth have been measured in fluidization beds, fixed beds and stationary system with a fluidization bed. In the fluidization beds, the automatic measurement of crystal size distribution has been tried by the use of the superficial velocities and the bed pressure drops.The automatic system has been applied by means of the AD transformation board(AZI-3104 INTERFACE Co.)of the flow meter(LF-610, PAC-D1 STEC Co., LM10 ZZT, LM05 ZZT KENIS Co.)and the pressure drop sensor(SE-49 MTEC Lab, Co.)with a personal computer. The automatic system has not been entirely successful under the unsatisfactory of the digitalization of the flow rate. The rate of the crystal growth in the fixed beds was measured by the technique of a wire netting touched a seed crystal in the fluidization bed. The crystal growth rate in the stationary system was measured by the seed crystal hanging in a vessel.The rate of the fluidization beds was greater from 5 to 20 times than that of the fixed beds or the stationary system on the same supersaturated solution. The rate in the fluidization beds was like an exponent curve.

本研究的材料为硫酸铝钾12-水和磷酸二氢钾。在流态化床、固定床和带有流态化床的固定系统中测量了晶体的生长速率。在流态化床层中，尝试了利用表观速度和床层压降自动测量晶粒度分布的方法，并利用流量计(LF-610、PAC-D1STEC、LM10ZZT、LM05ZZT Kenis)的AD转换板(AZI-3104接口公司)和压力降传感器(SE-49MTEC Lab，Co.)在PC机上实现了自动测量。在流量数字化不尽如人意的情况下，自动化系统并没有完全成功。采用流态化床中晶种接触金属丝网的方法，测量了固定床中晶体的生长速率。用挂在容器中的晶种测量了固定体系中的晶体生长速率，在相同的过饱和溶液中，流态化床的生长速率比固定床或固定体系的生长速率大5~20倍。流态化床层内的反应速率呈指数曲线。

项目成果

M.Ohta: "Characteristics of Heat Transfer from a Spherical Solid Body under Pulsating Forced"Convection Chem.Eng.Comm.,. 182. 81-97 (2000)

M.Ohta：“脉动强制下球形固体的传热特性”Convection Chem.Eng.Comm.，。

MITSUHIRO OHTA: "CHARACTERISTICS OF HEAT TRANSFER FROM SPHERICAL SOLID BODY UNDER PULSATING FORCED CONVECTION"CHEM.ENG.COMM.. VOL.182. 81-97 (2000)

MITSUHIRO 太田：“脉动强制对流下球形固体的传热特性”Chem.ENG.COMM.. VOL.182。

大平勇一: "スピルリナの増殖に及ぼす亜硝酸イオン初濃度の影響"化学工学論文集. 26. 720-722 (2000)

Yuichi Ohira：“亚硝酸根离子初始浓度对螺旋藻生长的影响”化学工程杂志 26. 720-722 (2000)。

YUICHI OHIRA: "EFFECT OF INITIAL NITRITE CONCENTRATION ON GROWTH OF SPIRULINA PLATENSIS"KAGAKU KOUGAKU RONBUNSYU. VOL.26. 720-722 (2000)

Yuichi Ohira：“初始亚硝酸盐浓度对钝顶螺旋藻生长的影响”KAGAKU KOUGAKU RONBUNSYU。

MASAHIRO TEDUKA: "DEVELOPMENT OF ICE MAKING APPARATUS USING COLD WINTER AIR"KAGAKU KOUGAKU RONBUNSYU. VOL.27. 137-140 (2001)

MASAHIRO TEDUKA：“利用冬季冷空气开发制冰装置”KAGAKU KOUGAKU RONBUNSYU。