Study on Sparingly-Soluble Carbonete Crystallization as Technology for CO_2 Fixation

微溶碳酸酯结晶固定CO_2技术的研究

• 批准号: 03805091
• 负责人: HIRASAWA Izumi
• 金额: $ 1.22万
• 依托单位: Grant-in-Aid for Scientific Research (C)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1991
• 资助国家: 日本
• 起止时间: 1991 至 1992
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-03805091/
• 关键词: Reactive Crystallization; Calcium Carbonate; Amino Acid; Crystal Growth; Nucleation; Sodium Chloride; CO_2; CO_2 Fixation Process; CO_2固定; 反応晶析; 結晶成長; 形状制御; 球状晶; 装置特性; 難溶性炭酸塩; 結晶形状; 結晶粒径

Reactive crystallization tests were done batch-wisely, to examine the effect of l-aspartic acid and l-glycine on the crystallization rate. From the results, effect of them was recognized not to be significant in comparison to the effect of crystallization operation factors. Then studies on reactive crystallization were carried out to obtain the effect of supersaturation, the rate of its formation, temperature and mixing on the shape of calcium carbonate crystals. Based on the results of above studies, direct mixing of calcium salt and carbonate sollution was applied to calcium carbonate crystallization under normal temperature and pressure, to recognize that solid sodium chloride addition was effective to form calciteselectively, althogh vaterite crystallized much without its addition. And also method of addition, reactant concentration affected crystal shape and size distribution. Consequently new phenomena that unstale microfines were transformed selectively to calcite by dissolution of sodium chloride surface, was found, and growth rate of calcite was obtained. This study could be located as a germic reserach, and it will contribute not only to the new process development of carbon dioxide flxation by calcium carbonate crystallization,

分批进行反应结晶测试，以检查 L-天冬氨酸和 L-甘氨酸对结晶速率的影响。从结果来看，与结晶操作因素的影响相比，它们的影响并不显着。然后进行了反应结晶研究，以获得过饱和度、其形成速率、温度和混合对碳酸钙晶体形状的影响。基于上述研究结果，将钙盐和碳酸盐溶液直接混合用于常温常压下的碳酸钙结晶，认识到添加固体氯化钠对于选择性形成方解石是有效的，尽管不添加固体氯化钠结晶了很多。而且添加方法、反应物浓度也影响晶体形状和尺寸分布。结果发现了未陈化的细粉通过氯化钠表面的溶解选择性地转化为方解石的新现象，并获得了方解石的生长速率。该研究可定位为微生物研究，不仅有助于碳酸钙结晶固定二氧化碳新工艺的开发，

项目成果

平沢泉、岩城康敏: "炭酸カルシウムの反応品析過程におけるカルサイトの生成" 化学工学論文集. (予定). (1994)

Izumi Hirasawa、Yasutoshi Iwaki：“碳酸钙反应分析过程中方解石的形成”《化学工程杂志》（计划）（1994 年）。

平沢泉、岩城康敏、豊倉賢: "炭酸カルシウムの反応品析過程におけるNacl添加の影響" 化学工学会秋田大会研究発表講演要旨集. 102 (1993)

Izumi Hirasawa、Yasutoshi Iwaki、Ken Toyokura：“添加 NaCl 对碳酸钙反应分析过程的影响”化学工程师学会秋田会议上的研究报告摘要 102 (1993)。

Izumi Hirasawa (One of the authors): Continuos Crystallization Operations and CSD. Advance in Chem.Engr. 43 Kagaku Kogyo Sha, 130 (1991)

Izumi Hirasawa（作者之一）：连续结晶操作和 CSD。

平沢泉(分担): "分〓〓〓〓ハンドブック 分担:品析プロセス" 丸〓, 18 (1993)

平泽泉（作业）：“手册：质量分析过程” Maru，18 (1993)

Izumi Hirasawa (One of the authors): Crystallizations Process. Handbook of Seperation & Purification Technologie J.C.S.Maruzen, 234 (1993)

Izumi Hirasawa（作者之一）：结晶过程。