Kurella Swamy, Bhukya Pawan Kishan, Meikap B C
a Department of Chemical Engineering , Indian Institute of Technology (IIT) Kharagpur , West Bengal , India.
b Department of Chemical Engineering , School of Engineering, Howard College, University of Kwazulu-Natal (UKZN) , Durban , South Africa.
J Environ Sci Health A Tox Hazard Subst Environ Eng. 2017 May 12;52(6):515-523. doi: 10.1080/10934529.2017.1281690. Epub 2017 Feb 16.
The objective of this study was to observe the performance of a lab-scale three-stage dual-flow sieve plate column scrubber for hydrogen sulfide (HS) gas removal from a gas stream, in which the HS concentration was similar to that of gasifier syngas. The tap water was used as scrubbing liquid. The gas and liquid were operated at flow rates in the range of 16.59 × 10-27.65 × 10 Nm/s and 20.649 × 10-48.183 × 10 m/s, respectively. The effects of gas and liquid flow rates on the percentage removal of HS were studied at 50-300 ppm inlet concentrations of HS. The increase in liquid flow rate, gas flow rate and inlet HS concentration increased the percentage removal of HS. The maximum of 78.88% removal of HS was observed at 27.65 × 10 Nm/s gas flow rate and 48.183 × 10 m/s liquid flow rate for 300 ppm inlet concentration of HS. A model has also been developed to predict the HS gas removal by using the results from the experiments and adding the parameters that affect the scrubber's performance. The deviations between experimental and predicted HS percentage removal values were observed as less than 16%.
本研究的目的是观察实验室规模的三级双流筛板塔洗涤器从气流中去除硫化氢（HS）气体的性能，其中HS浓度与气化炉合成气的浓度相似。使用自来水作为洗涤液。气体和液体的流速分别在16.59×10⁻²⁷.⁶⁵×10 Nm/s和20.649×10⁻⁴⁸.¹⁸³×10 m/s范围内。在HS入口浓度为50 - 300 ppm的情况下，研究了气体和液体流速对HS去除率的影响。液体流速、气体流速和入口HS浓度的增加均提高了HS的去除率。对于300 ppm的入口HS浓度，在气体流速为27.65×10 Nm/s和液体流速为48.183×10 m/s时，观察到HS的最大去除率为78.88%。还开发了一个模型，利用实验结果并添加影响洗涤器性能的参数来预测HS气体的去除情况。观察到实验和预测的HS去除率百分比值之间的偏差小于16%。
