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Ai C, Wang S, Sun P, Zhao S, Mu X. Analysis of the Formation Mechanism of Hydrogen Sulfide in the 13# Coal Seam of Shaping Coal Mine. ACS OMEGA 2024; 9:2980-2987. [PMID: 38250412 PMCID: PMC10795043 DOI: 10.1021/acsomega.3c09057] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 11/14/2023] [Revised: 12/05/2023] [Accepted: 12/21/2023] [Indexed: 01/23/2024]
Abstract
In order to accurately predict the law of occurrence and migration of hydrogen sulfide (H2S) in the underground and effectively solve the problem of excessive concentration of H2S gas, laboratory experiments on the content of various forms of sulfur in coal, sulfur isotopes, thermal evolution history, and coal seam water samples were carried out by applying the theories of coal mine geology, microbiology, and analytical chemistry, and based on the experimental results, the cause of H2S gas was explored. Through the analysis of the geological conditions of the coal seam mined, it can be seen that the coal mine experienced the alternation of marine and continental phases in the process of coal formation and that there was no magma intrusion. The experimental results showed that iron sulfide in coal accounts for 73.25% of the total sulfur, indicating that the coal seam was rich in pyrite. The results of the isotope test showed that the sulfur isotopes in coal samples were all negative, indicating that the sulfur isotope fractionation in coal was large, the loss was serious, and the coal seam was greatly affected by seawater. According to the experimental results of vitrinite reflectance, it can be concluded that the highest temperature during the thermal evolution of the coal seam is 108.12 °C, which has not reached the temperature condition of sulfate thermochemical reduction. Comparing the concentration of acid ions in coal seam water and tap water, it was found that the concentration of SO42- in coal seam water is low, while the concentration of HCO3- is high. According to the experimental results and theoretical analysis, the H2S gas in the high-sulfur coal mine was caused by microbial sulfate reduction. Finally, the transformation path of sulfur in the coal seam was deduced and analyzed. The results showed that sulfur in coal is positively correlated with H2S gas concentration.
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Affiliation(s)
- Chunming Ai
- College
of Safety Science and Engineering, Liaoning
Technical University, Huludao 125000, China
- Key
Laboratory of Thermal Disaster and Prevention, Ministry of Education, Huludao 125000, China
| | - Siqi Wang
- College
of Safety Science and Engineering, Liaoning
Technical University, Huludao 125000, China
- Key
Laboratory of Thermal Disaster and Prevention, Ministry of Education, Huludao 125000, China
| | - Pingping Sun
- College
of Safety Science and Engineering, Liaoning
Technical University, Huludao 125000, China
- Key
Laboratory of Thermal Disaster and Prevention, Ministry of Education, Huludao 125000, China
| | - Shuyu Zhao
- Shanxi
Jinshen Shaping Coal Industry Co., Ltd., Xinzhou 036500, Shanxi, China
| | - Xiaozhi Mu
- Shanxi
Jinshen Shaping Coal Industry Co., Ltd., Xinzhou 036500, Shanxi, China
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2
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Ma M, Zhao M. Investigation into the Enhancement of Gas-Liquid Mass Transfer of Absorption of H 2S by MDEA with Carbon Quantum Dots. ACS OMEGA 2023; 8:34678-34686. [PMID: 37779968 PMCID: PMC10535251 DOI: 10.1021/acsomega.3c03597] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 05/23/2023] [Accepted: 08/24/2023] [Indexed: 10/03/2023]
Abstract
Although the addition of fine particles can enhance mass transfer, the stability of suspension is still a challenge. Responding to this, this study introduced carbon quantum dots (CQDs) with good hydrophilicity into a desulfurizer. N-doped carbon quantum dots (N-CQDs) were prepared by the hydrothermal method and characterized by TEM, FT-IR, and XPS. The stability and rheological properties of MDEA-based CQD solutions with different concentrations were studied. CQD solutions with low concentrations showed good stability, and the viscosity of CQD solutions was positively correlated with concentration and inversely correlated with temperature. The desulfurization experiment showed that the desulfurization effect and mass transfer enhancement of MDEA-based CQD solutions were coinfluenced by the viscosity and concentration of the solution; 0.01 vol % CQD solution had the best desulfurization effect, and the mass transfer coefficient was 0.66 mol/(m3h kPa), which increased by 26.61% compared to the base solution.
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Affiliation(s)
- Mengyu Ma
- School of Chemistry and Pharmaceutical
Engineering, Huanghuai University, Zhumadian 463000, China
| | - Mengxi Zhao
- School of Chemistry and Pharmaceutical
Engineering, Huanghuai University, Zhumadian 463000, China
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Gu JN, Liang J, Xue Y, Yu C, Li X, Li K, Guo M, Jia J, Sun T. Highly Dispersed FeAg-MCM41 Catalyst for Medium-Temperature Hydrogen Sulfide Oxidation in Coke Oven Gas. ENVIRONMENTAL SCIENCE & TECHNOLOGY 2023; 57:13579-13587. [PMID: 37653710 DOI: 10.1021/acs.est.3c04112] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 09/02/2023]
Abstract
The traditional hydrolysis-cooling-adsorption process for coke oven gas (COG) desulfurization urgently needs to be improved because of its complex nature and high energy consumption. One promising alternative for replacing the last two steps is selective catalytic oxidation. However, most catalysts used in selective catalytic oxidation require a high temperature to achieve effective desulfurization. Herein, a robust 30Fe-MCM41 catalyst is developed for direct desulfurization at medium temperatures after hydrolysis. This catalyst exhibits excellent stability for over 300 h and a high breakthrough sulfur capacity (2327.6 mgS gcat-1). Introducing Ag into the 30Fe-MCM41 (30Fe5Ag-MCM41) catalyst further enhances the H2S removal efficiency and sulfur selectivity at 120 °C. Its outstanding performance can be attributed to the synergistic effect of Fe-Ag clusters. During H2S selective oxidation, Fe serves as the active site for H2S adsorption and dissociation, while Ag functions as the catalyst promoter, increasing Fe dispersion, reducing the oxidation capacity of the catalyst, improving the desorption capacity of sulfur, and facilitating the reaction between active oxygen species and [HS]. This process provides a potential route for enhancing COG desulfurization.
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Affiliation(s)
- Jia-Nan Gu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
| | - Jianxing Liang
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
| | - Yixin Xue
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
| | - Chengwei Yu
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
| | - Xianwei Li
- Research Institute, Baoshan Iron & Steel Co., Ltd., Shanghai 200900, P. R. China
| | - Kan Li
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
| | - Mingming Guo
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
| | - Jinping Jia
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
| | - Tonghua Sun
- School of Environmental Science and Engineering, Shanghai Jiao Tong University, 800 Dong Chuan Road, Shanghai 200240, P. R. China
- Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery, Shanghai 200240, P. R. China
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4
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Chan YH, Lock SSM, Wong MK, Yiin CL, Loy ACM, Cheah KW, Chai SYW, Li C, How BS, Chin BLF, Chan ZP, Lam SS. A state-of-the-art review on capture and separation of hazardous hydrogen sulfide (H 2S): Recent advances, challenges and outlook. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2022; 314:120219. [PMID: 36150621 DOI: 10.1016/j.envpol.2022.120219] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/19/2022] [Revised: 09/12/2022] [Accepted: 09/16/2022] [Indexed: 06/16/2023]
Abstract
Hydrogen sulfide (H2S) is a flammable, corrosive and lethal gas even at low concentrations (ppm levels). Hence, the capture and removal of H2S from various emitting sources (such as oil and gas processing facilities, natural emissions, sewage treatment plants, landfills and other industrial plants) is necessary to prevent and mitigate its adverse effects on human (causing respiratory failure and asphyxiation), environment (creating highly flammable and explosive environment), and facilities (resulting in corrosion of industrial equipment and pipelines). In this review, the state-of-the-art technologies for H2S capture and removal are reviewed and discussed. In particular, the recent technologies for H2S removal such as membrane, adsorption, absorption and membrane contactor are extensively reviewed. To date, adsorption using metal oxide-based sorbents is by far the most established technology in commercial scale for the fine removal of H2S, while solvent absorption is also industrially matured for bulk removal of CO2 and H2S simultaneously. In addition, the strengths, limitations, technological gaps and way forward for each technology are also outlined. Furthermore, the comparison of established carbon capture technologies in simultaneous and selective removal of H2S-CO2 is also comprehensively discussed and presented. It was found that the existing carbon capture technologies are not adequate for the selective removal of H2S from CO2 due to their similar characteristics, and thus extensive research is still needed in this area.
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Affiliation(s)
- Yi Herng Chan
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Serene Sow Mun Lock
- CO(2) Research Center (CO(2)RES), Department of Chemical Engineering, Universiti Teknologi PETRONAS, 32610, Seri Iskandar, Malaysia
| | - Mee Kee Wong
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Chung Loong Yiin
- Department of Chemical Engineering and Energy Sustainability, Faculty of Engineering, Universiti Malaysia Sarawak (UNIMAS), 94300, Kota Samarahan, Sarawak, Malaysia; Institute of Sustainable and Renewable Energy (ISuRE), Universiti Malaysia Sarawak (UNIMAS), 94300, Kota Samarahan, Sarawak, Malaysia
| | | | - Kin Wai Cheah
- School of Computing, Engineering and Digital Technologies, Teesside University, Middlesbrough, TS1 3BX, United Kingdom
| | - Slyvester Yew Wang Chai
- Biomass Waste-to-Wealth Special Interest Group, Research Centre for Sustainable Technologies, Faculty of Engineering, Computing and Science, Swinburne University of Technology, Jalan Simpang Tiga, 93350, Kuching, Sarawak, Malaysia
| | - Claudia Li
- Department of Chemical & Biomolecular Engineering, National University of Singapore, 117585, Singapore
| | - Bing Shen How
- Biomass Waste-to-Wealth Special Interest Group, Research Centre for Sustainable Technologies, Faculty of Engineering, Computing and Science, Swinburne University of Technology, Jalan Simpang Tiga, 93350, Kuching, Sarawak, Malaysia
| | - Bridgid Lai Fui Chin
- Department of Chemical and Energy Engineering, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia; Energy and Environment Research Cluster, Faculty of Engineering and Science, Curtin University Malaysia, CDT 250, 98009, Miri, Sarawak, Malaysia
| | - Zhe Phak Chan
- PETRONAS Research Sdn. Bhd. (PRSB), Lot 3288 & 3289, off Jalan Ayer Itam, Kawasan Institusi Bangi, 43000, Kajang, Selangor, Malaysia
| | - Su Shiung Lam
- Pyrolysis Technology Research Group, Higher Institution Centre of Excellence (HICoE), Institute of Tropical Aquaculture and Fisheries (AKUATROP), Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia; Henan Province Engineering Research Center for Biomass Value-added Products, School of Forestry, Henan Agricultural University, Zhengzhou, 450002, China; Sustainability Cluster, School of Engineering, University of Petroleum & Energy Studies, Dehradun, Uttarakhand, 248007, India.
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Modeling and analysis for cleaner operation of a process to remove BTX from coke oven gas. Sep Purif Technol 2022. [DOI: 10.1016/j.seppur.2022.122103] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
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Zhang P, Zhao Y, Tian X, Ji Y, Shu Y, Fu K, Fu D, Wang L. Selective absorption of H2S and CO2 from simulated coke oven gas by aqueous blends of N-methyldiethanolamine and tetramethylammonium glycine. KOREAN J CHEM ENG 2022. [DOI: 10.1007/s11814-022-1204-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022]
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Investigation and Optimisation of the Steady-State Model of a Coke Oven Gas Purification Process. ENERGIES 2022. [DOI: 10.3390/en15134548] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
Abstract
Turbulences in energy prices have a major effect on the energy industry. These disturbances should allow more efficient operation and the optimisation of technologies, leading to more versatile operation with model-based methods. In our study, a coke oven gas purification system was examined. The system consists of three columns, which interact and are modelled in Aspen Plus. After identifying the steady-state model, sensitivity analyses were conducted to obtain more information on the effects of the parameters that can and cannot be influenced by operating circumstances. Finally, the model was used to carry out optimisation studies to find the most beneficial operating conditions under the gas composition requirements. Two optimisation strategies were examined. In the case when only the purity was concerned, 0.54 g/Nm3, 0.01 g/Nm3, and 0.03 g/Nm3 concentrations were found for H2S, NH3, and HCN, respectively. However, when the washing water temperature was included, the concentrations of H2S, NH3, and HCN increased to 1 g/Nm3, 0.5 g/Nm3, and 0.04 g/Nm3, still below the environmental regulations. However, the latter case will be more feasible energetically because it can be completed without using refrigeration and facilitates lower washing water streams.
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Moral G, Ortiz-Imedio R, Ortiz A, Gorri D, Ortiz I. Hydrogen Recovery from Coke Oven Gas. Comparative Analysis of Technical Alternatives. Ind Eng Chem Res 2022; 61:6106-6124. [PMID: 35578731 PMCID: PMC9103049 DOI: 10.1021/acs.iecr.1c04668] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/29/2021] [Revised: 02/04/2022] [Accepted: 02/08/2022] [Indexed: 02/07/2023]
Abstract
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The recovery of energy
and valuable compounds from exhaust gases
in the iron and steel industry deserves special attention due to the
large power consumption and CO2 emissions of the sector.
In this sense, the hydrogen content of coke oven gas (COG) has positioned
it as a promising source toward a hydrogen-based economy which could
lead to economic and environmental benefits in the iron and steel
industry. COG is presently used for heating purposes in coke batteries
or furnaces, while in high production rate periods, surplus COG is
burnt in flares and discharged into the atmosphere. Thus, the recovery
of the valuable compounds of surplus COG, with a special focus on
hydrogen, will increase the efficiency in the iron and steel industry
compared to the conventional thermal use of COG. Different routes
have been explored for the recovery of hydrogen from COG so far: i)
separation/purification processes with pressure swing adsorption or
membrane technology, ii) conversion routes that provide additional
hydrogen from the chemical transformation of the methane contained
in COG, and iii) direct use of COG as fuel for internal combustion
engines or gas turbines with the aim of power generation. In this
study, the strengths and bottlenecks of the main hydrogen recovery
routes from COG are reviewed and discussed.
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Affiliation(s)
- Gonzalo Moral
- Department of Chemical & Biomolecular Engineering, University of Cantabria, Av. Los Castros s/n., 39005 Santander, Spain
| | - Rafael Ortiz-Imedio
- Department of Chemical & Biomolecular Engineering, University of Cantabria, Av. Los Castros s/n., 39005 Santander, Spain
| | - Alfredo Ortiz
- Department of Chemical & Biomolecular Engineering, University of Cantabria, Av. Los Castros s/n., 39005 Santander, Spain
| | - Daniel Gorri
- Department of Chemical & Biomolecular Engineering, University of Cantabria, Av. Los Castros s/n., 39005 Santander, Spain
| | - Inmaculada Ortiz
- Department of Chemical & Biomolecular Engineering, University of Cantabria, Av. Los Castros s/n., 39005 Santander, Spain
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Cao Z, Wu X, Wei X. Ionic liquid screening for desulfurization of coke oven gas based on COSMO-SAC model and process simulation. Chem Eng Res Des 2021. [DOI: 10.1016/j.cherd.2021.09.032] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/19/2022]
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