SO2 removing from smelter off-gas by converting to elemental sulfur with application of CaS particles synthesized by solvothermal method

Tian, Hongjing; Chen, Chao; Wan, Donghai; Xin, Yanjun; Yuan, Fuqi; Chang, Jing; Guo, Qingjie

doi:10.1016/j.fuel.2019.115702

Cited by 17 publications

(2 citation statements)

References 32 publications

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“…Boiling furnace is a type of coal-fired boiler with good fluidity of bulk material layer developed in recent years. , China’s pyrite is rich in natural resources, and the main component of pyrite is FeS 2 , accounting for almost 99% . FeS and Fe 2 O 3 are the most common impurities. , The new process uses pyrite as an agent to reduce and decompose FGDG to prepare SO 2 , to make full use of the sulfur in the pyrite and the sulfur in the FGDG, and to further increase the concentration of SO 2 gas, thus helping to alleviate the lack of sulfuric acid resources in China . The gas product, SO 2 is used as a raw material to produce sulfuric acid to increase economic benefits. , The solid product is rich in Fe and Ca resources and can be used as raw materials to produce sintered ore and pellets. ,,, …”

Section: Introductionmentioning

confidence: 99%

“…46,47 The new process uses pyrite as an agent to reduce and decompose FGDG to prepare SO 2 , to make full use of the sulfur in the pyrite and the sulfur in the FGDG, and to further increase the concentration of SO 2 gas, thus helping to alleviate the lack of sulfuric acid resources in China. 48 The gas product, SO 2 is used as a raw material to produce sulfuric acid to increase economic benefits. 49,50 The solid product is rich in Fe and Ca resources and can be used as raw materials to produce sintered ore and pellets.…”

Section: Introductionmentioning

confidence: 99%

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Production of SO₂ Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Song

Zhou

Wang

et al. 2019

Ind. Eng. Chem. Res.

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To effectively solve the problem of recovery and utilization of flue gas desulfurized gypsum (FGDG), a new method for preparing SO2 gas by adding a mixture of FGDG and pyrite into a boiling furnace and utilizing its high-temperature waste heat is proposed. Using the FactSage 6.1 Reaction module and the Equilib module, the pyrolysis behavior of FGDG with pyrite and the release characteristics of SO2 gas were studied. The effects of FeS2 addition, temperature, and ventilation flow rate on the decomposition of FGDG and the change in gas behavior were studied by thermogravimetric mass spectrometry and settling furnace (SF) experiments. In addition, the activation energies of the chemical reactions were determined by the Kissinger method, the Kissinger–Akahira–Sunose method, and the Flynn–Wall–Ozawa method. The results show that between 100 and 200 °C, mainly the loss process of CaSO4·2H2O crystal water from FGDG occurred. At 570 °C, FeS2 primarily undergoes self-decomposition. Between 820 and 1000 °C, the decomposition product of FeS2 reductively decomposes CaSO4. The average activation energy for the chemical reaction is 298.44 ± 8.83 kJ/mol. A lower pressure and ventilation and a higher FeS2 addition and temperature are beneficial for the reduction and decomposition of FGDG and for the increase in SO2 concentration. Therefore, in this study, the feasibility of adding FeS2 to reduce and decompose FGDG to prepare SO2 was preliminarily verified. The technology proposed in this article may shed some light on the recovery and high-value utilization of FGDG.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Production of SO₂ Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Song

Zhou

Wang

et al. 2019

Ind. Eng. Chem. Res.

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Spin‐Coating Deposited SnS₂ Thin Film‐Based Memristor for Emulating Synapses

Feng,

Fan,

Zhang

et al. 2024

Adv Funct Materials

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Abstract2D materials have garnered significant attention owing to their substantial potential across various applications, including thin‐film electronics, optoelectronics, and sensor devices, particularly, the synthesis and deposition methods of the 2D materials are crucial. In this study, thin films of tin disulfide (SnS2), a layer‐structured metal dichalcogenide, are deposited on an indium tin oxide (ITO) glass substrate through a spin‐coating process to prepare a sandwich‐structured resistive switching (RS) device (ITO/SnS2/ITO) by following magnetron sputtering of ITO as top electrode. Notably, the solution‐phased spin‐coating deposition method provides an efficient approach to enhance device performance through ion doping. By incorporating calcium ions (Ca2+), the devices exhibit the potential to achieve outstanding resistive switching performance and synapse functionality. With a DC sweep, an on/off resistance ratio exceeding 100 can be sustained without degradation for up to 5000 cycles. Furthermore, the devices exhibit diverse synaptic functions, including short‐term and long‐term plasticity (STP, LTP) in both potentiation and depression processes, spike‐timing‐dependent plasticity (STDP), and paired‐pulse facilitation (PPF). The transition in electrical resistance and synaptic function can be attributed to the migration of doped Ca2+ along the grain boundary and interlayer space of layer‐structured SnS2 films.

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Advanced Treatment Techniques for Deodorisation of Industrial Off-Gases and Wastewater Pollutant (BTEX) Removal

Janga,

Begum,

Anupoju

2024

Clean Energy Production Technologies

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SO2 removing from smelter off-gas by converting to elemental sulfur with application of CaS particles synthesized by solvothermal method

Cited by 17 publications

References 32 publications

Production of SO₂ Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Production of SO₂ Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Spin‐Coating Deposited SnS₂ Thin Film‐Based Memristor for Emulating Synapses

Advanced Treatment Techniques for Deodorisation of Industrial Off-Gases and Wastewater Pollutant (BTEX) Removal

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SO2 removing from smelter off-gas by converting to elemental sulfur with application of CaS particles synthesized by solvothermal method

Cited by 17 publications

References 32 publications

Production of SO2 Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Production of SO2 Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Spin‐Coating Deposited SnS2 Thin Film‐Based Memristor for Emulating Synapses

Advanced Treatment Techniques for Deodorisation of Industrial Off-Gases and Wastewater Pollutant (BTEX) Removal

Contact Info

Product

Resources

About

Production of SO₂ Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Production of SO₂ Gas: New and Efficient Utilization of Flue Gas Desulfurization Gypsum and Pyrite Resources

Spin‐Coating Deposited SnS₂ Thin Film‐Based Memristor for Emulating Synapses