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CO₂ 捕集 1

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动力波洗涤 1

单乙醇胺 1

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Improved rate-based modeling of carbon dioxide absorption with aqueous monoethanolamine solution

Stefania MOIOLI, Laura A. PELLEGRINI, Simone GAMBA, Ben LI

《化学科学与工程前沿（英文）》 2014年第8卷第1期页码 123-131 doi: 10.1007/s11705-014-1415-0

摘要： This paper focuses on modeling and simulation of a post-combustion carbon dioxide capture in a coal-fired power plant by chemical absorption using monoethanolamine. The aim is to obtain a reliable tool for process simulation: a customized rate-based model has been developed and implemented in the ASPEN Plus software, along with regressed parameters for the Electrolyte-NRTL model worked out in a previous research. The model is validated by comparison with experimental data of a pilot plant and can provide simulation results very close to experimental data.

关键词： Absorption carbon dioxide capture rate-based model monoethanolamine scrubbing

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Modeling the methyldiethanolamine-piperazine scrubbing system for CO

Stefania Moioli,Laura A. Pellegrini

《化学科学与工程前沿（英文）》 2016年第10卷第1期页码 162-175 doi: 10.1007/s11705-016-1555-5

摘要： Aqueous solutions of methyldiethanolamine (MDEA) and piperazine (PZ) are commonly used solvent nowadays. In this work a thermodynamic analysis with the Electrolyte-NRTL model has been performed for systems composed of acidic gases and MDEA+PZ aqueous solution. ASPEN Plus has been used for thermodynamic modeling. Values of binary interaction parameters for liquid phase activity coefficients have been estimated from regressions of experimental data. Moreover, the influence of the interactions between ion pairs and MDEA or PZ molecular species has been analyzed. The final aim is to obtain a reliable tool for design and simulation of absorption and stripping columns, fundamentals also in order to carry out energy saving studies.

关键词： vapor-liquid equilibrium methyldietanolamine piperazine regression Electrolyte-NRTL

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Removing ammonia from air with a constant pH, slightly acidic water　spray wet scrubber using recycled scrubbing

Ahmad Kalbasi Ashtari, Amir M. Samani Majd, Gerald L. Riskowski, Saqib Mukhtar, Lingying Zhao

《环境科学与工程前沿（英文）》 2016年第10卷第6期 doi: 10.1007/s11783-016-0869-3

摘要： Slightly acidic solutions are a practical means of removing ammonia from air Scrubbed NH accumulates in solution as NH and should be an excellent fertilizer Increased air velocity decreased NH removal and increased NH collection Previous research on wet scrubbers has only studied highly acidic scrubbing solutions because of their high ammonia capture efficiencies; however, the high acidity created practical problems. Lower acidity solutions would reduce corrosion, maintenance, and cost; however, designers may need to use strategies for increasing scrubber effectiveness, such as using lower air velocities. The objective of this study was to determine if a spray scrubber with slightly acidic and higher pH scrubbing solution (pH from 2 to 8) could effectively remove NH from NH laden air (such as animal building exhaust air), and also collect this valuable resource for later use as a fertilizer. A bench-scale spray wet scrubber treated 20 ppmv NH /air mixture in a countercurrent contact chamber. First, the solution pH was varied from 2 to 8 while maintaining constant air velocity at 1.3 m·s . Next, air velocity was increased (2 and 3 m·s ) while solution pH remained constant at pH6. At 1.3 m·s , NH removal efficiencies ranged between 49.0% (pH8) and 84.3% (pH2). This study has shown that slightly acidic scrubbing solutions are a practical means of removing ammonia from air especially if the scrubber is designed to increase collisions between solution droplets and NH molecules. The NH removed from the air was held in solution as NH and accumulates over time so the solution should be an excellent fertilizer.

关键词： Ammonia Spray wet scrubber Slightly acidic scrubbing solution Controlled pH Removal efficiency

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Integrated adsorption and absorption process for post-combustion CO

Gongkui Xiao, Penny Xiao, Andrew Hoadley, Paul Webley

《化学科学与工程前沿（英文）》 2021年第15卷第3期页码 483-492 doi: 10.1007/s11705-020-1964-3

摘要： This study explored the feasibility of integrating an adsorption and solvent scrubbing process for post-combustion CO capture from a coal-fired power plant. This integrated process has two stages: the first is a vacuum swing adsorption (VSA) process using activated carbon as the adsorbent, and the second stage is a solvent scrubber/stripper system using monoethanolamine (30 wt-%) as the solvent. The results showed that the adsorption process could enrich CO in the flue gas from 12 to 50 mol-% with a CO recovery of >90%, and the concentrated CO stream fed to the solvent scrubber had a significantly lower volumetric flowrate. The increased CO concentration and reduced feed flow to the absorption section resulted in significant reduction in the diameter of the solvent absorber, bringing the size of the absorber from uneconomically large to readily achievable domain. In addition, the VSA process could also remove most of the oxygen initially existed in the feed gas, alleviating the downstream corrosion and degradation problems in the absorption section. The findings in this work will reduce the technical risks associated with the state-of-the art solvent absorption technology for CO capture and thus accelerate the deployment of such technologies to reduce carbon emissions.

关键词： vacuum swing adsorption monoethanolamine post-combustion CO₂ capture integrated process

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Mature

Giorgia De Guido, Matteo Compagnoni, Laura A. Pellegrini, Ilenia Rossetti

《化学科学与工程前沿（英文）》 2018年第12卷第2期页码 315-325 doi: 10.1007/s11705-017-1698-z

摘要： Carbon capture and storage (CCS) have acquired an increasing importance in the debate on global warming as a mean to decrease the environmental impact of energy conversion technologies, by capturing the CO produced from the use of fossil fuels in electricity generation and industrial processes. In this respect, post-combustion systems have received great attention as a possible near-term CO capture technology that can be retrofitted to existing power plants. This capture technology is, however, energy-intensive and results in large equipment sizes because of the large volumes of the flue gas to be treated. To cope with the demerits of other CCS technologies, the chemical looping combustion (CLC) process has been recently considered as a solution for CO separation. It is typically referred to as a technology without energy penalty. Indeed, in CLC the fuel and the combustion air are never mixed and the gases from the oxidation of the fuel (i.e., CO and H O) leave the system as a separate stream and can be separated by condensation of H O without any loss of energy. The key issue for the CLC process is to find a suitable oxygen carrier, which provides the fuel with the activated oxygen needed for combustion. The aim of this work is to explore the feasibility of using perovskites as oxygen carriers in CLC and to consider the possible advantages with respect to the scrubbing process with amines, a mature post-combustion technology for CO separation.

关键词： CO₂ capture monoethanolamine chemical looping combustion oxygen carrier perovskites

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冷风闪速冶金在中国的实现和发展

张文海

《中国工程科学》 2002年第4卷第11期页码 19-25

摘要：

基于常温变量喷射—动力波洗涤闪速炼铜技术，介绍了“冷风闪速冶金”等6项创新技术在金隆铜业公司的实施和实现清洁生产的业绩，并就我国铜、镍闪速冶金技术提出了近期的研究方向。

关键词：铜冶金闪速熔炼冷风冶炼动力波洗涤中国

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单乙醇胺碳捕集工艺大规模工业化应用：提高非平衡级速率模型的预测精度

罗小波,Wang Meihong

《工程（英文）》 2017年第3卷第2期页码 232-243 doi: 10.1016/J.ENG.2017.02.001

摘要：

对于减少化石能源发电厂和其他能源密集型过程的人为二氧化碳(CO₂) 的排放，碳捕集和储存(CCS)技术将发挥至关重要的作用。然而, 由于装备CO₂捕集装置而导致的成本增加是其大规模工业化应用的主要障碍。为减少碳捕集装置的一次性投资费用和后续操作费用，大量的研究通过流程建模、仿真和优化来实现该过程的优化设计和优化操作。为此，准确的模型是必不可少的基础。本文论述了关于通过升级参数和多级模型验证来开发一个更精确的基于乙醇胺碳捕集过程的非平衡级速率模型。本文首先分析了该过程速率模型的建模框架。采用Aspen Plus® 软件开发此过程的稳态模型，并且在三个模拟阶段对较宽范围的压力，温度和CO₂ 载荷进行了模型验证，包括热力学建模、物性计算和中试规模工艺模拟。采用在Aspen Plus® 中编写Fortran 子程序升级了液相密度和气液相接触面积计算的关联参数。模型验证结果表明，本文中采用的新的关联参数组合的热力学模型比其他三个经典模型具有更高的精度，而且试验规模的流程模拟结果和实验数据吻合很好。随后本文采用这一模型对一个250 MW 的联合循环燃气发电厂的碳捕集工艺过程设计进行了案例研究，并和另一文献进行了对比，本文的设计降低了吸收塔和解析塔的填料高度并减少了CO₂特征热负荷。

关键词：过程模拟模型验证单乙醇胺 CO₂ 捕集联合燃气发电厂碳捕集和存储