A cross-flow rotating packed bed toward desulphurization of marine exhaust gas,The Canadian Journal of Chemical Engineering

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A cross-flow rotating packed bed toward desulphurization of marine exhaust gas
The Canadian Journal of Chemical Engineering ( IF 1.6 ) Pub Date : 2021-09-17 , DOI: 10.1002/cjce.24316
Yong Cai _{1,

2,

3} , Yan‐Bin Li _{1,

2} , Jia Fei _{1,

2} , Yong Luo ₁ , Zhang‐Nan Wen _{1,

2} , Guang‐Wen Chu _{1,

2}

Affiliation

The marine exhaust gas containing SO₂ leads to serious impacts on human health and marine environments. Due to the strict emission standard of marine exhaust gas and the limited space of ships, desulphurization process intensification is urgent. Herein, a cross-flow rotating packed bed (CF-RPB) with a compact size was developed toward desulphurization of marine exhaust gas. According to the emission standards of different sea areas, the characteristics of simulated open seawater desulphurization (OSD) and closed alkali desulphurization (CAD) were systematically evaluated. The respective correlations for K_ya of OSD and CAD were proposed to predict the height of CF-RPB. The desulphurization efficiencies of 86% in the OSD and 97% in the CAD were achieved in a three-stage CF-RPB, satisfying the emission standard. Compared with the traditional spray tower, the CF-RPB has a higher mass transfer coefficient with a smaller volume, which has great potential for desulphurization of marine exhaust gas.

中文翻译：

一种用于船用废气脱硫的错流旋转填充床

_{含有SO 2}的船用废气对人类健康和海洋环境造成严重影响。由于船用废气排放标准严格，船舶空间有限，脱硫工艺强化迫在眉睫。本文针对船舶废气脱硫开发了一种尺寸紧凑的错流旋转填充床（CF-RPB）。根据不同海域的排放标准，系统评价了模拟开放式海水脱硫（OSD）和封闭式碱法脱硫（CAD）的特点。K _ya各自的相关性提出了 OSD 和 CAD 来预测 CF-RPB 的高度。采用三级CF-RPB，OSD脱硫效率达到86%，CAD脱硫效率达到97%，满足排放标准。与传统的喷雾塔相比，CF-RPB具有更高的传质系数和更小的体积，在船用废气脱硫方面具有很大的潜力。

更新日期：2021-09-17

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