Flue gas deNOxing spent V2O5-WO3/TiO2 catalyst: A review of deactivation mechanisms and current disposal status

Ding, Long; Wang, Yifan; Qian, Lixin; Qi, Pengyu; Xie, Mingxing; Long, Hongming

doi:10.1016/j.fuel.2022.127268

Cited by 34 publications

(7 citation statements)

References 97 publications

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“…The primary performance of the catalyst refers to the activity of NO x removal, which is not much influenced by its structure. However, because of the high density of active substances, the honeycomb catalyst has a remarkable denitrification effect and a higher market share …”

Section: Status Of Spent Vanadium–titanium Scr Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…According to statistics, China's NO x emissions have been more serious than those of the United States and European Union countries in recent years, as shown in Figure 1(b). 8 To control the generation of NO x , China included NO x in the list of the total amount of air pollutants in the "Twelfth Five-Year Plan" and proposed that the overall NO x emission of active and newly built coal-fired units should not exceed 100 mg/m 3 . Each thermal power plant has installed a flue gas denitrification device to achieve this goal.…”

Section: Introductionmentioning

confidence: 99%

“…Coal-fired power plants are considered one of the significant sources of anthropogenic NO x emissions to the atmosphere. , China is a sizable coal-consuming country. According to statistics, China’s NO x emissions have been more serious than those of the United States and European Union countries in recent years, as shown in Figure (b) . To control the generation of NO x , China included NO x in the list of the total amount of air pollutants in the “Twelfth Five-Year Plan” and proposed that the overall NO x emission of active and newly built coal-fired units should not exceed 100 mg/m 3 .…”

Section: Introductionmentioning

confidence: 99%

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Strategy and Technical Progress of Recycling of Spent Vanadium–Titanium-Based Selective Catalytic Reduction Catalysts

Zhao,

Zhang,

Yang

et al. 2024

ACS Omega

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Selective catalytic reduction denitration technology, abbreviated as SCR, is essential for the removal of nitrogen oxide from the flue gas of coal-fired power stations and has been widely used. Due to the strong demand for energy and the requirements for environmental protection, a large amount of SCR catalyst waste is produced. The spent SCR catalyst contains high-grade valuable metals, and proper disposal or treatment of the SCR catalyst can protect the environment and realize resource recycling. This review focuses on the two main routes of regeneration and recycling of spent vanadium−titanium SCR catalysts that are currently most widely commercially used and summarizes in detail the technologies of recycling, high-efficiency recycling, and recycling of valuable components of spent vanadium−titanium SCR catalysts. This review also discusses in depth the future development direction of recycling spent vanadium−titanium SCR catalysts. It provides a reference for promoting recycling, which is crucial for resource recovery and green and lowcarbon development.

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Section: Status Of Spent Vanadium–titanium Scr Catalystsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Strategy and Technical Progress of Recycling of Spent Vanadium–Titanium-Based Selective Catalytic Reduction Catalysts

Zhao,

Zhang,

Yang

et al. 2024

ACS Omega

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“…However, the defects of small specific surface area and easy agglomeration of CuO restrict the catalytic oxidation performance of heavy metals. TiO 2 has a large specific surface area and good acid-resistant and water-resistant properties, which are often used as a base material [6] . When metal oxides are loaded onto the TiO 2 surface, the metal oxides are well dispersed on the TiO 2 surface, preventing metal oxide agglomeration and thus improving the catalytic oxidation performance.…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Removal of Gaseous Arsenic by CuO/TiO₂ Catalyst

Zhang,

2023

J. Phys.: Conf. Ser.

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The emission of arsenic from thermal power plants poses many hazards to humans and the environment, so controlling arsenic emissions is an urgent problem to be solved. This paper prepared CuO/TiO2 adsorbent by selecting TiO2 with a large specific surface area as the substrate. The adsorption performance of CuO, TiO2, and CuO/TiO2 adsorbent materials on gas-phase arsenic at different reaction temperatures (500 °C, 600 °C, and 700 °C) was investigated. The experimental results showed that CuO/TiO2 adsorbent had better arsenic adsorption capacity than CuO and TiO2 because CuO/TiO2 has a large specific surface area and rich surface-active sites. The temperature affects the performance of the adsorbents, and all three adsorbents do not perform well at 700 °C, mainly because the metal oxide materials are not resistant to high temperatures, and the mesoporous structure is easily collapsed. CuO/TiO2 adsorbent is suitable for the control and emission reduction of heavy metal arsenic in coal-fired flue gas at medium and low temperatures below 600 °C. The above study provides a direction for developing and applying adsorbents to remove gas-phase arsenic.

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Effect of Electroplating Sludge on the Iron Ore Sintering: Mineralization, Yield and Gaseous Emission

Tang,

Ding,

Wang

et al. 2024

steel research int.

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Electroplating sludge (ES), the inevitable by‐product of electroplating wastewater treatment processes, has been conventionally managed via solidification landfilling or thermal processing; these methods may engender secondary environmental pollutants. This study proposes an innovative approach using iron ore sintering for effective ES treatment. The study reveals that incorporating 1.0% ES reduces the yield quality of the sintered ore, yet it remains within acceptable thresholds. It is noteworthy that when the addition of ES is 0.5%, it not only increases the sinter yield from 68.57% to 69.23% but also enhances the productivity from 1.19 to 1.32 t (m2 h)−1. Furthermore, the consumption of solid fuel decreases to 48.01 kg t−1. Additionally, the treatment method significantly reduced the emissions of CO and NOx in the sintering flue gas, with the average concentrations decreasing from 12681.32 to 9744.51 ppm for CO and from 244.81 to 161.11 ppm for NOx. This study investigates the migration and transformation mechanisms of nickel and chlorine elements in ES by conducting inductively coupled plasma analysis on the sintered raw materials and their products, as well as scanning electron microscopy with energy dispersive X‐ray spectroscopy analysis on the sinter ash.

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Flue gas deNOxing spent V2O5-WO3/TiO2 catalyst: A review of deactivation mechanisms and current disposal status

Cited by 34 publications

References 97 publications

Strategy and Technical Progress of Recycling of Spent Vanadium–Titanium-Based Selective Catalytic Reduction Catalysts

Strategy and Technical Progress of Recycling of Spent Vanadium–Titanium-Based Selective Catalytic Reduction Catalysts

Experimental Study on Removal of Gaseous Arsenic by CuO/TiO₂ Catalyst

Effect of Electroplating Sludge on the Iron Ore Sintering: Mineralization, Yield and Gaseous Emission

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Flue gas deNOxing spent V2O5-WO3/TiO2 catalyst: A review of deactivation mechanisms and current disposal status

Cited by 34 publications

References 97 publications

Strategy and Technical Progress of Recycling of Spent Vanadium–Titanium-Based Selective Catalytic Reduction Catalysts

Strategy and Technical Progress of Recycling of Spent Vanadium–Titanium-Based Selective Catalytic Reduction Catalysts

Experimental Study on Removal of Gaseous Arsenic by CuO/TiO2 Catalyst

Effect of Electroplating Sludge on the Iron Ore Sintering: Mineralization, Yield and Gaseous Emission

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Experimental Study on Removal of Gaseous Arsenic by CuO/TiO₂ Catalyst