海水洗涤去除船舶动力装置废气中SO2的研究

IF 0.5 4区 环境科学与生态学 Q4 ENGINEERING, ENVIRONMENTAL
Yiping Ma, L. Xu, Penghao Su, Daolun Feng, Kailiang Yang
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引用次数: 1

摘要

研究了SO2在海水中的吸附机理,并进行了相应的实验。重点介绍了海水洗涤技术在船舶动力装置含SO2废气中的应用。利用所建立的模型,预测了SO2分压、CO2分压、尾水温度、pH、海水碱度等参数对尾水pH和海水脱硫能力的影响。实验结果表明,海水脱硫能力随着SO2分压、pH、碱度的增加和CO2分压、温度的降低而增加。研究表明,3.5%盐度的海水脱硫能力约为淡水的2倍。在不同的情况下,所需的吸附剂供应率为给定的二氧化硫去除效率进行了研究。研究发现,在含硫量为3.5 wt. %的重质燃料油上运行时,要达到97%的脱硫效率,即满足硫氧化物排放控制区(SECA)的硫氧化物限值,则需要0.0407-0.0683 m3/kWh的最低供水量,这主要取决于水的碱度和盐度。这些数据对于评估水洗涤系统的运行成本非常重要。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Study on seawater scrubbing for SO2 removal from ship’s power plant exhaust gas
The mechanism of SO2 absorption in seawater is investigated, and the experiment was carried out accordingly. Emphasis is on applications of seawater scrubbing of ship’s power plant exhaust gas containing SO2. The formulated model is used to predict the influence of various parameters on both pH of tailwater and seawater desulfurization capability, e.g., the partial pressure of SO2, the partial pressure of CO2, tailwater temperature, pH and alkalinity of seawater. Experiment results indicated that the seawater desulfurization capacity increases with both increasing partial pressure of SO2, pH and alkalinity and decreasing partial pressure of CO2 and temperature. The study shows the desulfurization capacity of seawater with 3.5% salinity is approximately twice that of freshwater. Different scenarios in which the required absorbent supply rate for a given SO2 removal efficiency are studied. It is observed a 97% removal efficiency, corresponding to meeting the SOx limits in the SOx emission control areas (SECA) while operating on a heavy fuel oil containing sulfur 3.5 wt. %, requires a minimum water supply rate of 0.0407–0.0683 m3/kWh, depending mainly on the water composition in terms of alkalinity and salinity. Such data are important in assessing the operation cost of the water scrubbing system.
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来源期刊
Environment Protection Engineering
Environment Protection Engineering 环境科学-工程:环境
CiteScore
0.80
自引率
0.00%
发文量
9
审稿时长
12 months
期刊介绍: Water purification, wastewater treatment, water reuse, solid waste disposal, gas emission abatement, systems of water and air pollution control, soil remediation.
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