Improve efficiency of thermal regenerators and VOCs abatement systems: An experimental and modeling study

Frigerio, S.; Mehl, Marco; Ranzi, E.; Schweiger, D.L.; Schedler, J.

doi:10.1016/j.expthermflusci.2006.04.009

Cited by 12 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Most of the heat can be reserved in the ceramic heat storage media (thermal recovery efficiency ≥ 95%) when the reacted flow proceeds down through to ceramic chamber B, and is ready to preheat the inlet VOCs for the next cycle. 7,1163 It is also important to note that there are some other distinct advantages of using RCO besides the merits mentioned above: (1) long characteristic cooling times and short characteristic heating times for RCOs ensure a stable autothermal operation, despite inlet parameters fluctuating greatly;…”

Section: Typical Catalytic Reactor and Oxidizermentioning

confidence: 99%

“…In such systems, catalysts are used to reduce the required reaction temperatures and increase the overall efficiency of the VOC oxidation. 1162,1163 As shown in Figure 46, a two-bed RCO is predominantly composed of ceramic layers, catalyst layers, a natural gas burner/electrical heater (for heat storage), reaction media, and heat supply. The entry direction of the VOC flow turns over, with four combined valves switching every 1−2.5 min.…”

Section: Chemical Reviewsmentioning

confidence: 99%

“…Most of the heat can be preserved in the ceramic heat storage media (thermal recovery efficiency ≥95%) when the reacted flow proceeds down through to ceramic chamber B, whereby it is ready to preheat the inlet VOCs for the next cycle. 7,1163 It is also important to note that there are some other distinct advantages of using RCOs besides the merits mentioned above: (1) the long cooling times and short heating times for RCOs ensure a stable autothermal operation; (2) fast start-ups are possible with RCOs as the catalyst temperature does not need to exceed 250−350 °C; (3) the RCO purification unit can be used as a source of secondary high-potential energy when VOC content in the gas mixture is higher than 2.5−3.0 g• m −3 . 1164,1165 Compared to RCOs, COs have space advantages, as only a tubular/plate heat exchanger is used to replace regenerative thermal ceramic heat storage layers.…”

Section: Chemical Reviewsmentioning

confidence: 99%

“…In an RCO system, chambers of inert regenerative materials with high specific heat capacities (800–1000 J·kg –1 ·K –1 ) are utilized to heat the VOC stream by cooling burnt gases through reverse flow operation, which can dramatically cut fuel costs. In such systems, catalysts are used to reduce the required reaction temperatures and increase the overall efficiency of the VOC oxidation. , As shown in Figure , a two-bed RCO is predominantly composed of ceramic layers, catalyst layers, a natural gas burner/electrical heater (for heat storage), reaction media, and heat supply. The entry direction of the VOC flow turns over, with four combined valves switching every 1–2.5 min.…”

Section: Typical Catalytic Reactor and Oxidizermentioning

confidence: 99%

See 3 more Smart Citations

Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources

et al. 2019

View full text Add to dashboard Cite

show abstract

Section: Typical Catalytic Reactor and Oxidizermentioning

confidence: 99%

Section: Chemical Reviewsmentioning

confidence: 99%

Section: Chemical Reviewsmentioning

confidence: 99%

Section: Typical Catalytic Reactor and Oxidizermentioning

confidence: 99%

See 2 more Smart Citations

Recent Advances in the Catalytic Oxidation of Volatile Organic Compounds: A Review Based on Pollutant Sorts and Sources

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Aromatic hydrocarbons are typical representative substances of VOCs emitted by industry, among which benzene, toluene, ethylbenzene, and xylene are the main pollutants [22].…”

Section: Aromatic Hydrocarbon Eliminationmentioning

confidence: 99%

Review on Catalytic Oxidation of VOCs at Ambient Temperature

Zhao

Wang

Zhao

et al. 2022

IJMS

View full text Add to dashboard Cite

As an important air pollutant, volatile organic compounds (VOCs) pose a serious threat to the ecological environment and human health. To achieve energy saving, carbon reduction, and safe and efficient degradation of VOCs, ambient temperature catalytic oxidation has become a hot topic for researchers. Firstly, this review systematically summarizes recent progress on the catalytic oxidation of VOCs with different types. Secondly, based on nanoparticle catalysts, cluster catalysts, and single-atom catalysts, we discuss the influence of structural regulation, such as adjustment of size and configuration, metal doping, defect engineering, and acid/base modification, on the structure–activity relationship in the process of catalytic oxidation at ambient temperature. Then, the effects of process conditions, such as initial concentration, space velocity, oxidation atmosphere, and humidity adjustment on catalytic activity, are summarized. It is further found that nanoparticle catalysts are most commonly used in ambient temperature catalytic oxidation. Additionally, ambient temperature catalytic oxidation is mainly applied in the removal of easily degradable pollutants, and focuses on ambient temperature catalytic ozonation. The activity, selectivity, and stability of catalysts need to be improved. Finally, according to the existing problems and limitations in the application of ambient temperature catalytic oxidation technology, new prospects and challenges are proposed.

show abstract