CIESC Journal ›› 2013, Vol. 64 ›› Issue (7): 2580-2586.doi: 10.3969/j.issn.0438-1157.2013.07.037

Previous Articles     Next Articles

Preparation and characterization of manganese-based regenerable sorbents for high temperature H2S removal

GUO Jing, WANG Ju, LIANG Bin   

  1. College of Chemical Engineering, Sichuan University, Chengdu 610065, Sichuan, China
  • Received:2012-11-11 Revised:2013-01-26 Online:2013-07-05
  • Supported by:

    supported by the National Natural Science Foundation of China (50876121).

Abstract: High temperature desulfurization of coal gas is a key step of integrated gasification combined cycle (IGCC)and direct reduced iron (DRI)production,which directly influences the global thermal efficiency.Manganese-based sorbents with different Mn-contents were prepared by coprecipitation method for the high temperature sulfur removal.Precipitation was conducted by neutralizing the mixed solution of manganese nitrate and alumina nitrate with 10% NH3·H2O at 50℃.And the pH value in precipitation was kept around 9.The sorbents prepared were tested in a fixed-bed reactor by sulfidation-regeneration cycles.XRD,SEM and BET were used to characterise the structural change of the sorbents during the cycles.The sorbents made by coprecipitation method have good Mn/Al dispersibility.The desulfurization reaction at 850℃ was rapid and quantitative.The sulfur capacity increased linearly with increase of manganese content in the sorbents.The S/Mn atomic ratio was within 0.90—0.95 after sulfurization.The sulfur capacity was not influenced by space velocity and H2S content in feed gas.The sulfided sorbent was regenerated using diluted air containing 3% O2 at 850℃.The sulfur capacity was stable after many cycles.So,the sorbents could be used as regenerable sulfur sorbents for high temperature H2S removal.

Key words: high temperature H2S removal, manganese-based regenerable sorbents, coprecipitation

CLC Number: 

  • TQ546.5
[1] Liu Hengwei,Ni Weidou,Li Zheng,et al.Strategic thinking on IGCC development in China[J].Energy Policy,2008,36:1-11
[2] Liang Meisheng(梁美生),Li Chunhu(李春虎),Xie Kechang(谢克昌).Research progress on high temperature desulfurizer[J].Coal Conversion(煤炭转化),2002,25(1):13-17
[3] Liang Bin(梁斌),Qiu Liyou(邱礼有),Zhong Benhe(钟本和).Integrated gasification combined cycle (IGCC)and the challenge to chemical engineering[J].Journal of Chemical Industry and Engineering(China)(化工学报),1998,49:51-57
[4] Liang Bin(梁斌),Wang Ju(王菊),Zeng Bing(曾兵).Sulfur acceptor and high temperature regenerative sulfur removal from hot coal gas[J].Journal of Sichuan University:Engineering Science Edition (四川大学学报:工程科学版),2011,43(6):197-202
[5] Yang Ruoyi(杨若仪).The discussion of sponge iron production with coal gas[J].Iron and Steel Technology(钢铁技术),2007(5):1-6
[6] Westmoreland P R,Harrison D P.Evaluation of candidate solids for high-temperature desulfurization of low-btu gases[J].Environmental Science and Technology,1976,10(7):659-661
[7] Abbasian J,Slimane R B.A regenerable copper-based sorbent for H2S removal from coal gases[J].Industrial and Engineering Chemistry Research,1998,37(7):2775-2782
[8] Slimane R B,Abbasian J.Copper-based sorbents for coal gas desulfurization at moderate temperatures[J].Industrial and Engineering Chemistry Research,2000,39(5):1338-1344
[9] Ge Xiaohua(葛晓华),Guo Bo(郭波),Chang Liping(常丽萍).Latest researches in the sorbents for hot coal gas desulfurization[J].Industrial Catalysis(工业催化),2005,13(11):6-11
[10] Ko T H,Chu H,Chaung L K.The sorption of hydrogen sulfide from hot syngas by metal oxides over supports[J].Chemosphere,2005,58:467-474
[11] Bakker Wridzer J W,Kapteijn Freek,Moulijn Jacob A.A high capacity manganese-based sorbent for regenerative high temperature desulfurization with direct sulfur production conceptual process application to coal gas cleaning[J].Chemical Engineering Journal,2003,96:223-235
[12] Su Sheng(苏胜),Xiang Jun(向军),Sun Lushi(孙路石),Ma Xinling(马新灵),Hu Song(胡松),Sun Xuexin(孙学信).Experimental research on flue gas desulfurization by alumina supported copper oxide and sorbents preparation[J].Journal of Chemical Industry and Engineering(China)(化工学报),2005,56(2):333-337
[13] Liang Bin(梁斌),Wang Tao(汪涛),Wu Pan(吴潘).Preparation of the Mn/γ-Al2O3 acceptor for high temperature regenerative desulfuration[J].Journal of Sichuan University:Engineering Science Edition (四川大学学报:工程科学版),2002,34(1):11-15
[14] Liang Bin,Rob Korbee,Albert W Gerritsen,Cor M Vandenbleek.Preparation of the Mn/γ-Al2O3 acceptor for high temperature regenerative H2S removal[J].The Canadian Journal of Chemical Engineering,1999,77:483-488
[15] Wang Ju,Liang Bin,Richard Parnas.Manganese-based regenerable sorbents for high temperature H2S removal[J].Fuel,2013,107:539-546
[16] Liang B,Korbee R,Gerritsen A W.Effect of manganese content on the properties of high temperature regenerative H2S acceptor[J].Fuel,1999,78:319-325
[1] HU Ju, PAN Yalin, LI Hansheng, WU Qin, WANG Jinfu. Preparation and properties of cerium modified Cu-based catalysts for methanol synthesis [J]. CIESC Journal, 2014, 65(7): 2770-2775.
[2] WANG Weiwen, ZHENG Xiaodan, LI Ping, XU Hongbin, ZHANG Yi. Synthesis of ultrafine copper chromite black pigment by chemical coprecipitation using SBDS-assisted urea [J]. CIESC Journal, 2013, (5): 1847-1854.
[3] XIE Lisha,CHEN Xiaorong. Effect of solid base properties on acetone condensation to isophorone
over Mg-Al-O catalyst
[J]. , 2010, 29(7): 1230-.
[4] YANG Chunjuan,DONG Rulin,CHEN Zhidong. Preparation of (Ce0.8Y0.2)2(C2O4)3 solid solution by homogenous coprecipitation [J]. , 2008, 27(5): 740-.
Viewed
Full text


Abstract

Cited

  Shared   
  Discussed   
No Suggested Reading articles found!