Fundamental Study and Reactor Development on Absorption and Desorption of Carbon Dioxide Using High Thmperature Molten Salt Slurry

高温熔盐浆液吸收解吸二氧化碳的基础研究及反应器研制

• 批准号: 18560735
• 负责人: TERASAKA Koichi
• 金额: $ 2.49万
• 依托单位: Keio University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2006
• 资助国家: 日本
• 起止时间: 2006 至 2007
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-18560735/
• 关键词: Carbon Dioxide; Molten Salt; Slurry Bubble Column; Lithium Silicate

The study has been done for 2007-2008 to obtain the fundamental data in terms of the absorption and desorption of carbon dioxide using a circulating slurry bubble column in which lithium silicate fine particles are suspended in molten lithium-potassium carbonate at high temperature.That was summarized as follows :1. Analysis of dissolution and stripping behavior of CO_2 bubble into molten salt slurryThe lithium silicate fine particles and molten Li-K-carbonate were prepared in the hot reactor. The model flue gas which has 20% CO_2 and 80% N_2 was fed into the reactor. The absorbed CO_2 was observed by measuring mass balance of CO_2 in the reactor when the mass of lithium silicate and the composition of molten salt were changed. Maximum absorption rate and solubility of CO_2 in molten salt were measured by the time course of CO_2 concentration in effluent gas from the reactor. The effects of influent gas flow rate, composition in molten salt and slurry concentration on gas bubble behavior were investigated.On the other hand, the stripping behavior of CO_2 was investigated when the reactor was heated up to the desorption temperature. The effects of the mass of lithium silicate, temperature and heating rate on the stripping rate of CO_2 were discussed. In this study, the limited process was the CO_2 molecular transfer in the molten salt, that is, CO_2 dissolution from bubbles governed the overall reaction rate.2. Hydrodynamics in circulating slurry bubble columnTo experimentally simulate the gas-liquid-solid hydrodynamics in high temperature reactor under the room temperature, the cold model was used. The 1 micron PVC particles was used as instead of lithium silicate particles and the surfactant aqueous solution was used as a imitation liquid of molten salt. By using a designed circulating slurry bubble column, the gas holdup and the circulation rate of liquid were investigated to know the fundamental information to apply for industry.

这项研究是在2007 - 2008年进行的，以使用循环浆液气泡柱的吸收和解吸二氧化碳的吸收和解吸，其中硅酸锂细颗粒被悬浮在高温下的熔融锂碳酸锂中。如下：1：1。在热反应器中制备了CO_2气泡在熔融盐溶液中的溶解和剥离行为分析。将具有20％CO_2和80％N_2的模型烟道气体送入反应器中。当改变硅酸盐的质量和熔融盐的组成时，通过测量反应堆中CO_2的质量平衡观察到吸收的CO_2。 CO_2在熔融盐中的最大吸收率和溶解度通过反应器的废气中CO_2浓度的时间过程来测量。研究了进水气流，熔融盐中的组成和浆液浓度对气泡行为的影响。另一方面，当反应堆加热至解吸温度时，研究了CO_2的剥离行为。讨论了硅酸锂的质量，温度和加热速率对CO_2剥离速率的影响。在这项研究中，有限的过程是熔融盐中的CO_2分子转移，即co_2从气泡中溶解了总体反应速率。2。循环浆液气泡柱中的流体动力学通过实验模拟了在室温下在高温反应堆中的气体液体固体水动力学，使用了冷模型。 1微米PVC颗粒被用作代替硅酸锂颗粒，并且表面活性剂水溶液被用作熔融盐的模仿液体。通过使用设计的循环浆液泡柱，研究了液体的气体持有和循环速率，以了解用于行业的基本信息。

项目成果

リチウム複合酸化物微粒子を懸濁させた高温スラリー気泡塔によるCO2回収

使用悬浮锂复合氧化物颗粒的高温浆液泡罩塔回收 CO2

• 发表时间: 2006
• 作者: Yuta;Ozaki;尾崎 裕太
• 通讯作者: 尾崎 裕太

リチウムシリケート懸濁スラリーによる高温燃焼排ガスからのCO2回収

利用硅酸锂悬浮浆料从高温燃烧废气中回收CO2

• 发表时间: 2007
• 作者: 和才 怜史;尾崎 裕太;小林 大祐;寺坂 宏一;尾崎 裕太
• 通讯作者: 尾崎 裕太

Absorption and Stripping of CO_2 with Molten Salt Slurry in Bubble Column at High Temperature

高温鼓泡塔中熔盐浆液吸收汽提CO_2

• 发表时间: 2006
• 期刊: Chemical Engineering and Technology 29
• 作者: Koichi;Terasaka
• 通讯作者: Terasaka

CO_2 recovery Using High Temperature Bubble Columns Suspended Lithium Complex Oxide Particulates

使用高温鼓泡塔回收悬浮锂复合氧化物颗粒的 CO_2

• 发表时间: 2006
• 作者: Yuta;Ozaki
• 通讯作者: Ozaki

Absorption and Stripping of CO2 with Molten Salt Slurry in Bubble Colump at High Temperature

高温气泡塔中熔盐浆液吸收汽提CO2

• 发表时间: 2006
• 期刊: Chemical Engineering and Technology 29
• 作者: Koichi Terasaka