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a heat transfer model for the rotary kiln

A heat-transfer model for the rotary kiln: Part I. pilot

A model for rotary kiln heat transfer, which accounts for the interaction of all the transport paths and processes, is presented in a three-part series. In this first paper, the pilot kiln facility is described, and the significant results from the heat-transfer trials are identified. Limestone, Ottawa sand, and pctroleum coke were heated using a range of firing rates, while other operating

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A Mathematical Model of Heat Transfer in a Rotary Kiln

In particular, an extended penetration theory is successfully developed to describe the heat transfer coefficient of the covered wall to the bulk solid in a rotary kiln, i.e., h cw–cb = (χd p /k g + 0.5/) –1 (0.096 < χ < 0.198). A one‐dimensional axial heat transfer model for an internally heated rotary kiln

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A heat-transfer model for the rotary kiln: Part II

Jun 01, 1989· A model of rotary kiln heat transfer, which accounts for the interaction of all the transport paths and processes, is presented in a three-part series. In this second paper, the development of a unified model for heat transfer at a kiln cross-section is described. Heat transfer within the kiln refractory wall was solved using a finite-difference approximation for one-dimensional transient

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A Mathematical Model of Heat Transfer in a Rotary Kiln

Dec 01, 2005· Rotary kilns are used ubiquitously in the chemical and metallurgical industries. The mechanism of heat transfer in a rotary kiln is discussed in this paper, in which the effect of rotation is considered in determining heat transfer coefficients. In particular, an extended penetration theory is successfully developed to describe the heat transfer coefficient of the covered wall to the bulk

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Heat transfer model in a rotary kiln for the pyrolysis of

Sep 06, 2019· Heat transfer model in a rotary kiln for the pyrolysis of biomass. / López Ordovás, Jorge; Chong, Katie; Bridgwater, Tony. 2019. Poster session presented at 36th Chemical Engineering National Conference, Zaragoza, Spain. Research output: Contribution to conference › Poster

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A thermal model for the rotary kiln including heat

A mathematical model was developed to predict heat transfer from the freeboard gas to the bed of a rotary kiln. The thermal model incorporates a two-dimensional representation of the bed's transverse plane into a conventional one-dimensional, plug flow model for rotary kilns. The result, a quasi-three-dimensional rotary kiln model, significantly improves the ability to simulate conditions

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Full-scale 3D-modelling of the radiative heat transfer in

Feb 01, 2020· A model describing the total heat transfer within a rotary kiln can be a useful tool in order to achieve a better understanding of the bed material heat treatment. Though heat is transferred to the bed due to radiation, conduction and convection, the total heat transfer is dominated by radiation [3],causing the need for an accurate model of

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Simulation of Heat-Transfer Phenomena in a Rotary Kiln

A thermal model for the rotary kiln including heat transfer within the bed. International Journal of Heat and Mass Transfer 1996, 39 (10),2131-2147. DOI: 10.1016/0017-9310(95)00272-3. Charles A. Cook, Vic A. Cundy, Fred L. Larsen, Joann S. Lighty. A comprehensive heat transfer model for rotary

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Validation of a one-dimensional kiln heat transfer model

A 1D heat transfer model is described which accurately predicts gas, solid, wall, and outer-shell temperatures simultaneously along the length of a rotary kiln.

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Development of process model of a rotary kiln for volatile

the heat transfer at the kiln is examined to show the difference be-tween the process models of carbonization and activation. The param-eters include the convective heat transfer coefficients of wall to solid and wall to gas heat transfers. The optimal operating conditions of the rotary kiln are searched for the design and control of the kiln.

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A thermal model for the rotary kiln including heat

A mathematical model was developed to predict heat transfer from the freeboard gas to the bed of a rotary kiln. The thermal model incorporates a two-dimensional representation of the bed's transverse plane into a conventional one-dimensional, plug flow model for rotary kilns. The result, a quasi-three-dimensional rotary kiln model

More

Heat transfer model in a rotary kiln for the pyrolysis of

Sep 06, 2019· Heat transfer model in a rotary kiln for the pyrolysis of biomass. / López Ordovás, Jorge; Chong, Katie; Bridgwater, Tony. 2019. Poster session presented at 36th Chemical Engineering

More

A heat-transfer model for the rotary kiln: Part II

A model of rotary kiln heat transfer, which accounts for the interaction of all the transport paths and processes, is presented in a three-part series. In this second paper, the development of a unified model for heat transfer at a kiln cross-section is described. Heat transfer within the kiln

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Discrete-Ordinates Modelling of the Radiative Heat

rotary kiln for iron ore pelletizing using a DOM [32], and the aim of this work is to describe the detailed radiative heat transfer model used, for a pilot-scale rotary kiln, and validate it by comparing it with measurement data. The developed model and treatment of the radiative heat transfer

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Validation of a one-dimensional kiln heat transfer model

A 1D heat transfer model is described which accurately predicts gas, solid, wall, and outer-shell temperatures simultaneously along the length of a rotary kiln.

More

Simulation of Heat-Transfer Phenomena in a Rotary Kiln

A thermal model for the rotary kiln including heat transfer within the bed. International Journal of Heat and Mass Transfer 1996, 39 (10),2131-2147. DOI: 10.1016/0017-9310(95)00272-3. Charles A. Cook, Vic A. Cundy, Fred L. Larsen, Joann S. Lighty. A comprehensive heat transfer model for rotary

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Heat Transfer Model and Computer Program for a Direct

An improved heat transfer model has been developed for a direct-fired rotary kiln. The model can be used to verify Kiln design, to optimize operating conditions, to predict the temperature history of the solids, and to evaluate if local areas of the kiln

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COMPUTER SIMULATION OF HEAT TRANSFER DURING

In the present study, an improved numerical heat transfer model has been developed for a rotary kiln used for drying and preheating of wet iron ore. The present model includes radiation exchange

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