Transient heat transfer during startup of a thermal plasma chamber: Numerical insights

Pancholi, Keyur C.; Sen, Nirvik; Singh, K.K.; Vincent, Tessy; Kaushik, C.P.

doi:10.1016/j.pnucene.2022.104371

Cited by 5 publications

(3 citation statements)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For axial nonideal mixing, we used a model in which two interconnected well-mixed CSTs were divided along the axial direction (Pancholi et al, 2022). In the first axial CST, it was assumed that all solutions entered and exited.…”

Section: Models Of Virus Filtersmentioning

confidence: 99%

“…For simple standard processes, RTD can be estimated using models for continuously stirred tanks (CST), tanks in series (TIS), and dispersed plug flow (DPF), with the choice and combination depending on the extent of back-mixing in the system (Sencar, Hammerschmidt, & Jungbauer et al, 2020). Processes involving dead zones require modeling of nonideal mixing (Pancholi et al, 2022). More complex processes need more sophisticated mathematical models, and analytical solutions are not always available.…”

mentioning

confidence: 99%

See 1 more Smart Citation

Residence time distribution in continuous virus filtration

Chen,

Recanati,

De Mathia

et al. 2024

Biotech & Bioengineering

View full text Add to dashboard Cite

Regulatory authorities recommend using residence time distribution (RTD) to address material traceability in continuous manufacturing. Continuous virus filtration is an essential but poorly understood step in biologics manufacturing in respect to fluid dynamics and scale‐up. Here we describe a model that considers nonideal mixing and film resistance for RTD prediction in continuous virus filtration, and its experimental validation using the inert tracer NaNO3. The model was successfully calibrated through pulse injection experiments, yielding good agreement between model prediction and experiment ( 0.90). The model enabled the prediction of RTD with variations—for example, in injection volumes, flow rates, tracer concentrations, and filter surface areas—and was validated using stepwise experiments and combined stepwise and pulse injection experiments. All validation experiments achieved 0.97. Notably, if the process includes a porous material—such as a porous chromatography material, ultrafilter, or virus filter—it must be considered whether the molecule size affects the RTD, as tracers with different sizes may penetrate the pore space differently. Calibration of the model with NaNO3 enabled extrapolation to RTD of recombinant antibodies, which will promote significant savings in antibody consumption. This RTD model is ready for further application in end‐to‐end integrated continuous downstream processes, such as addressing material traceability during continuous virus filtration processes.

show abstract

Section: Models Of Virus Filtersmentioning

confidence: 99%

mentioning

confidence: 99%

Residence time distribution in continuous virus filtration

Chen,

Recanati,

De Mathia

et al. 2024

Biotech & Bioengineering

View full text Add to dashboard Cite

show abstract

“…In plasma gasification, waste is subjected to a controlled quantity of oxygen, while plasma pyrolysis involves decomposing waste in an oxygen-deprived environment [5,12,17]. In the context of thermal treatment, an air supply of less than or equal to 5% relative to stoichiometric air can be considered to lead to pyrolysis conditions for waste treatment [18]. Numerous studies, ranging from laboratory-to pilot-scale, have been conducted to explore the environmental and output implications of employing plasma pyrolysis technology for waste management.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications

Aldeeb,

Abu Darda,

Damideh

et al. 2024

Recycling

View full text Add to dashboard Cite

Recently, plasma-based pyrolysis has gained increasing prominence as a technology in response to the growing challenges in waste disposal and the recognition of opportunities to generate valuable by-products. The efficiency of the pyrolysis process is intricately tied to the characteristics of the plasma involved, particularly the effective electron temperature (Teff) and plasma density (ne). This study aimed to conduct a comprehensive examination of the essential features and optimal operational parameters of a developed RF-ICP torch specifically designed for small-scale municipal solid waste (MSW) pyrolysis (mixture of paper and polypropylene) with the goal of controlling both the torch and the overall process. Using optical emission spectroscopy (OES), we measured plasma parameters, specifically (Teff) and (ne), while varying argon gas flow rates and RF powers. The (Teff) and (ne)were determined using the Boltzmann plot and Stark broadening, respectively. The RF torch was found to generate (ne) up to approximately 2.8×1020 cm−3 and (Teff) up to around 8200 K, with both parameters being controlled by the discharge power and gas flow rate. Additionally, a power-losing mechanism, namely the anomalous skin effect, was detected during the study, which is uncommon in atmospheric plasma discharge.

show abstract

Assessment of energy consumption and environmental safety measures in a plasma pyrolysis plant for eco-friendly waste treatment

Rana,

Kar

2024

Journal of the Energy Institute

View full text Add to dashboard Cite

Transient heat transfer during startup of a thermal plasma chamber: Numerical insights

Cited by 5 publications

References 34 publications

Residence time distribution in continuous virus filtration

Residence time distribution in continuous virus filtration

Analysis of Essential Features and Optimal Operational Parameters of an RF-ICP Torch for Waste Treatment Applications

Assessment of energy consumption and environmental safety measures in a plasma pyrolysis plant for eco-friendly waste treatment

Contact Info

Product

Resources

About