Separation by the supercritical carbon dioxide of the specific ingredient generated by hydrothermal reaction from organic wastes

利用超临界二氧化碳从有机废物中水热反应产生的特定成分分离

基本信息

批准号：
14350530
负责人：
KISHITA Atshushi
金额：
$ 9.02万
依托单位：
Tohoku university
依托单位国家：
日本
项目类别：
Grant-in-Aid for Scientific Research (B)
财政年份：
2002
资助国家：
日本
起止时间：
2002 至 2003
项目状态：
已结题

项目摘要

Since it solved completely with the small non-polar or fine polar substance of molecular weights, such as hydrocarbon, alcohol, and carbonic acid, it has quite high saturation solubility and solvent power changes with temperature or pressure a lot, supercritical carbon dioxide can separate the useful ingredient in solution in high purity by control of temperature or pressure. However, by the system with which the high warm temperature water of subcritical coexists, it is difficult to design the circulation formula system by which unknown points, such as the dissolution to water phase of carbon dioxide, Optimized separation and concentration by the system in which an organic matter exists mostly. Then, the extraction process of the useful substance generated by the hydrothermal reaction of the organic waste using super-criticality carbon dioxide was devised. If the hydrothermal reaction of the organic waste is carried out by high temperature high-pressure underwater, the solution contai … More ning a water-soluble organic matter will be obtained.Supercritical carbon dioxide is added to the obtained solution, and an organic matter is extracted from solution. Then, when supercritical carbon dioxide phase and water phase are separated and supercritical carbon dioxide phase is decompressed, carbon dioxide is the process that evaporates and a water-soluble organic matter is obtained by high concentration. In this research, in order to examine the possibility of this process, counter flow style continuation extraction equipment was produced and the experiment, which extracts an organic matter from low-concentration water-soluble organic compound solution, was conducted. It turns out that it experiments by making 2wt% solution into a sample, and, as for 1-butanol of fine polarity, 60% of the rate of extraction is obtained by about 100% of extraction liquid concentration, and the maximum, and the concentration effect is acquired. As for strong polar acetic acid, 12% of extraction liquid concentration and 1% of the rate of extraction were obtained by the maximum. The possibility of a process, which extracts the useful ingredient from the hydrothermal process of biomass waste by these experiments using supercritical carbon dioxide, was shown. Less

由于它用分子量的小非极性或细极物质（例如碳氢化合物，酒精和碳酸）完全溶解，因此它具有很高的饱和溶液，并且随温度或压力的变化，二氧化碳可以通过控制温度或压力来分离高纯度中的溶液中有用的二氧化碳。然而，通过使用亚临界物的高温温度的系统，很难设计循环公式系统，该系统通过该系统（例如二氧化碳的水相溶解到二氧化碳的水相，通过有机物大多数存在的系统的优化分离和浓度）。然后，设计了使用超临界二氧化碳的水热反应产生的有用物质的提取过程。如果通过高温高压水下进行有机废物的热液反应，则将获得溶液的溶液，将获得更多的水溶性有机物。将二氧化碳添加到获得的溶液中，并从溶液中提取有机物。然后，当分离超临界二氧化碳相和水相并压缩超临界二氧化碳相时，二氧化碳是蒸发的过程，并通过高浓度获得水溶性有机物。在这项研究中，为了检查此过程的可能性，生产了反流式延续提取设备，并从低浓度的水溶性有机化合物溶液中提取有机物的实验。事实证明，它通过将2wt％的溶液作为样品进行实验，并且，对于1-丁醇的高极性，提取速率的60％是通过大约100％的提取液体浓度和最大浓度效应获得的。对于强极极性乙酸，通过最大值获得了12％的提取液体浓度和1％的提取速率。显示了通过这些实验使用超临界二氧化碳从生物质废物的热液过程中提取有用的物质的可能性。较少的