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There are two criteria that favor, but do not guarantee, the spontaneous formation of a solution:
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Carboxylic acids react with diazomethane in an ether solvent via alkylation at the carboxylate oxygen atom to give methyl esters of the corresponding acid with excellent yields.
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Optimize Flue Gas Settings to Promote Microalgae Growth in Photobioreactors via Computer Simulations
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在气体-液体接触过程中建模,模拟和膜湿度估计,包括外侧反应:使用DEA解决方案升级生物气体.

Grigorios Pantoleontos1, Dimitrios Koutsonikolas1, Akrivi G Asimakopoulou1

  • 1Advanced Renewable Technologies & Environmental Materials in Integrated Systems (ARTEMIS) Laboratory, Chemical Process & Energy Resources Institute, Centre for Research & Technology Hellas (CPERI/CERTH), 6th km Charilaou-Thermi, P.O. Box 361, Thermi, Thessaloniki 57001, Greece.

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概括

这项研究表明,使用带有diethanolamine的膜接触器,用于升级生物气的高二氧化碳去除和CH4回收. 确定了最佳流速,并开发了用于预测二氧化碳去除效率的相关性.

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科学领域:

  • 化学工程是化学工程的重要组成部分.
  • 环境科学 环境科学
  • 分离过程 分离过程.

背景情况:

  • 生物气的升级对于利用甲 (CH4) 作为可再生能源至关重要.
  • 消除二氧化碳 (CO2) 是生物气体净化的一个关键步骤.
  • 膜接触器为气液分离提供了一个有前途的技术.

研究的目的:

  • 评估在气液膜接触器中去除二氧化碳的质量转移模型.
  • 优化运行条件,以有效捕获二氧化碳和CH4回收.
  • 根据实验数据,开发出二氧化碳去除的预测相关性.

主要方法:

  • 实验是在3M Liqui-Cel MM-1.7 × 5.5膜模块中进行的.
  • 作为溶剂,使用0.25M的甲醇胺 (DEA) 水溶液.
  • 系统地改变气体和液体的流量,以评估二氧化碳的去除和CH4回收.

主要成果:

  • 实现了超过67%的二氧化碳除去效率,达到100%的效率.
  • 确定了最佳的生物气和溶剂流量,以实现最大的性能.
  • 开发了一个相关性,以基于流量计算二氧化碳去除率.
  • 发现湿度值取决于液体流速,对气体流速不那么敏感.

结论:

  • 该研究验证了质量转移模型,并提供了对膜湿现象的见解.
  • 开发的相关性有助于预测生物气升级的二氧化碳去除效率.
  • 选择外侧相关性显著影响质量转移和湿的分析.