Investigation of oxy-fuel combustion for methane and acid gas in a diffusion flame

被引:3
|
作者
Guo, Songling [1 ]
Tao, Xun [1 ]
Zhou, Fan [1 ]
Yu, Mengyan [1 ]
Wu, Yufan [1 ]
Gao, Yunfei [1 ]
Ding, Lu [1 ]
Wang, Fuchen [1 ]
机构
[1] East China Univ Sci & Technol, Inst Clean Coal Technol, Shanghai 200237, Peoples R China
基金
中国国家自然科学基金;
关键词
Acid gas; Methane; Oxy-fuel combustion; Oxidation; Chemical analysis; Carbon sulfides; HYDROGEN-SULFIDE; SULFUR CHEMISTRY; CLAUS PROCESS; H2S; OXIDATION; COS; CS2; KINETICS; SO2; DECOMPOSITION;
D O I
10.1016/j.cjche.2023.07.009
中图分类号
TQ [化学工业];
学科分类号
0817 ;
摘要
Co-combustion of methane (CH4) and acid gas (AG) is required to sustain the temperature in Claus reaction furnace. In this study, oxy-fuel combustion of methane and acid gas has been experimentally studied in a diffusion flame. Three equivalence ratios (ER = 1.0, 1.5, 2.0) and CH4-addition ratios (CH4/AG = 0.3, 0.5, 0.7) were examined and the flame was interpreted by analyzing the distributions of the temperature and species concentration along central axial. CH4-AG diffusion flame could be classified into three sections namely initial reaction, oxidation and complex reaction sections. Competitive oxidation of CH4 and H2S was noted in the first section wherein H2S was preferred and both were mainly proceeding decom-position and partial oxidation. SO2 was formed at oxidation section together with obvious presence of H2 and CO. However, H2 and CO were inclined to be sustained under fuel rich condition in the complex reaction section. Reducing ER and increasing CH4/AG contributed to higher temperature, H2S and CH4 oxidation and CO2 reactivity. Hence a growing trend for CH4 and AG to convert into H2, CO and SO2 could be witnessed. And this factor enhanced the generation of CS2 and COS in the flame inner core by interactions of CH4 and CO2 with sulfur species. COS was formed through the interactions of CO and CO2 with sulfur species. The CS2 production directly relied on reaction of CH4 with sulfur species. The concentration of COS was greater than CS2 since CS2 was probably inhibited due to the presence of H2. COS and CS2 could be consumed by further oxidation or other complex reactions.(c) 2023 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.
引用
收藏
页码:106 / 116
页数:11
相关论文
共 50 条
  • [1] Investigation of oxy-fuel combustion for methane and acid gas in a diffusion flame
    Songling Guo
    Xun Tao
    Fan Zhou
    Mengyan Yu
    Yufan Wu
    Yunfei Gao
    Lu Ding
    Fuchen Wang
    [J]. Chinese Journal of Chemical Engineering, 2024, 65 (01) : 106 - 116
  • [2] INVESTIGATION ON FLAME CHARACTERISTICS OF OXY-FUEL COMBUSTION
    Dam, Bidhan
    Islam, Md
    Love, Norman
    Choudhuri, Ahsan
    [J]. PROCEEDINGS OF THE ASME POWER CONFERENCE - 2011, VOL 1, 2012, : 1 - 5
  • [3] Characteristics of Methane Diffusion Flame under Oxy-fuel Conditions
    Hu, Fan
    Li, Pengfei
    Guo, Junjun
    Liu, Zhaohui
    [J]. Zhongguo Dianji Gongcheng Xuebao/Proceedings of the Chinese Society of Electrical Engineering, 2021, 41 (18): : 6302 - 6311
  • [4] Flame structure investigations of oxy-fuel combustion
    Seepana, Sivaji
    Jayanti, Sreenivas
    [J]. FUEL, 2012, 93 (01) : 52 - 58
  • [5] Investigation of Methane Oxy-Fuel Combustion in a Swirl-Stabilised Gas Turbine Model Combustor
    Li, Mao
    Tong, Yiheng
    Thern, Marcus
    Klingmann, Jens
    [J]. ENERGIES, 2017, 10 (05)
  • [6] Ammonia chemistry in oxy-fuel combustion of methane
    Mendiara, Teresa
    Glarborg, Peter
    [J]. COMBUSTION AND FLAME, 2009, 156 (10) : 1937 - 1949
  • [7] Reburn Chemistry in Oxy-fuel Combustion of Methane
    Mendiara, Teresa
    Glarborg, Peter
    [J]. ENERGY & FUELS, 2009, 23 (07) : 3565 - 3572
  • [8] Characteristics and flame appearance of oxy-fuel combustion using flue gas recirculation
    Abdelaal, Mohsen
    El-Riedy, Medhat
    El-Nahas, Ahmed M.
    El-Wahsh, Fathy R.
    [J]. FUEL, 2021, 297
  • [9] Characteristics of oxy-fuel combustion in gas turbines
    Liu, C. Y.
    Chen, G.
    Sipocz, N.
    Assadi, M.
    Bai, X. S.
    [J]. APPLIED ENERGY, 2012, 89 (01) : 387 - 394
  • [10] Fundamental investigation on the Fuel-NOx emission of the oxy-fuel combustion with a tubular flame burner
    Shimokuri, Daisuke
    Fukuba, Shinichi
    Ishizuka, Satoru
    [J]. PROCEEDINGS OF THE COMBUSTION INSTITUTE, 2015, 35 : 3573 - 3580