Wang Bing, Chen Huanyu, Hao Xingguang, Li Kai, Sun Xin, Li Yuan, Ning Ping
Faculty of Environmental Science and Engineering, Kunming University of Science and Technology, Kunming 650500, China.
Hunan Research Institute of Nonferrous Metals, Changsha 410100, China.
Materials (Basel). 2023 Mar 15;16(6):2343. doi: 10.3390/ma16062343.
Removal of hydrogen sulfide (HS) from coke oven gas has attracted increasing attention due to economic and environmental concerns. In this study, tannin extract (TE) absorption combined with binuclear sulfonated phthalocyanine cobalt organic polymer (OTS) and binuclear sulfonated phthalocyanine cobalt (PDS) with a fixed bed reactor is used for removal of HS. The effect of gas flow rate, concentration of HS, co-existence of organic sulfide compounds and O were investigated. Then, the effect of total alkalinity content of TE, NaVO, OTS and PDS was studied in detail. The experimental results demonstrated that 100% HS conversion could maintain for 13 h at a total alkalinity of 5.0 g/L, TE concentration of 4.0 g/L, NaVO concentration of 5 g/L, and OTS and PDS concentration of 0.2 g/L and 0.2 g/L, respectively. The OTS and PDS showed synergistic effect on boosting TE desulfurization efficiency. The results provide a new route for the investigation of liquid catalyzed oxidation desulfurization in an efficient and low-cost way.
出于经济和环境方面的考虑，从焦炉煤气中去除硫化氢（HS）已引起越来越多的关注。在本研究中，采用单宁提取物（TE）吸收结合双核磺化酞菁钴有机聚合物（OTS）和双核磺化酞菁钴（PDS），并通过固定床反应器来去除HS。研究了气体流速、HS浓度、有机硫化物和氧气共存的影响。然后，详细研究了TE、偏钒酸钠、OTS和PDS的总碱度含量的影响。实验结果表明，在总碱度为5.0 g/L、TE浓度为4.0 g/L、偏钒酸钠浓度为5 g/L、OTS和PDS浓度分别为0.2 g/L和0.2 g/L的条件下，HS转化率可在13小时内保持100%。OTS和PDS对提高TE脱硫效率具有协同作用。该结果为高效、低成本地研究液相催化氧化脱硫提供了一条新途径。
