Rotary Hearth Calcining of Petroleum Cokes
Common calcining methods utilize a rotary kiln, a shaft furnace, or a rotary hearth furnace. Each furnace type uses a different method for heating the coke up to the calcining temperature which typically ranges from 1150° to 1400 °C. This paper will concentrate on the rotary hearth furnace and its use for petroleum coke calcining. Shaft Furnace
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Lining of the Rotary Kilns for Petroleum Coke …
The paper provides a brief description of the technological process and design of the rotary kilns for petroleum coke KEP-1 and KEP-2 calcination, as well as …
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Mathematical modeling of the rotary coke calcining kiln
A more elaborate description may be found in Perron et al. (1992a) and also in Bui et al. (1991). A typical kiln is 60 m in length. 2 to 3 m in diameter, and rotates at 2 to 4 rpm. A typical green coke contains 8 to 12 mass% moisture and …
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Modeling and simulation of petroleum coke calcination in rotary …
This process is carried out in a calcining rotary kiln. A typical kiln for petroleum coke is about 60 m long with a diameter of 2.5 m. The kiln is tilted by an angle of about 2–5° and rotates at speeds of 2–4 rpm. Air (primary and secondary) for combustion is injected through the burner at the solids discharge end of the kiln.
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Investigation of Combustion and Thermal-Flow Inside a Petroleum Coke …
Calcined coke is a competitive material for making carbon anodes for smelting of alumina to aluminum. Calcining is an energy intensive industry and a significant amount of heat is exhausted in the calcining process. Efficiently managing this energy resource is tied to the profit margin and survivability of a calcining plant. To help improve …
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Rotary Hearth Calcining of Petroleum Cokes
Abstract. While shaft furnaces and rotary kiln furnaces have been utilized for calcining of pet cokes and coals for a longer period, rotary hearth furnaces have been used for over …
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Modeling and simulation of petroleum coke calcination in rotary …
Martins et al. (2001) described a steady-state rotary kiln model for the petroleum coke calcination that predicts the temperature profiles for the bed, gas phase and the kiln wall in the axial ...
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Lining of the Rotary Kilns for Petroleum Coke …
124 Accesses. 3 Citations. Explore all metrics. The paper provides a brief description of the technological process and design of the rotary kilns for petroleum …
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Investigation of Combustion and Thermal-Flow Inside a Petroleum Coke …
Petroleum coke is processed into calcined coke in a rotary kiln, where the temperature profiles of flue gas and coke bed are highly nonuniform due to different flow and combustion mechanisms.
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Petroleum Coke Calcining Systems
rotary kilns can handle a wide range of green coke feeds including needle, sponge, shot, fluid or tar pitch green cokes. The rotary kiln is also able to optimize the coke …
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Calcination solutions Coke calcining systems
optimized in the rotary kiln calcining system. Also, fines in the calcined product are decreased thus enhancing critical elements of product quality. Energy efficient Due to the rotating action in a rotary kiln, the coke bed is in constant gentle motion exposing coke particles to the process heat. Additionally, the
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Modeling and simulation of petroleum coke calcination in rotary …
Rate-based Simulation of Coke Calcination in Rotary Kilns. It is found that the rate-based simulation can be implemented as a useful tool to predict the operating conditions needed to control the content of undesirable impurities in the calcined petroleum coke, namely, sulfur, volatile matter and moisture contents.
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Simulation of Combustion and Thermal-flow Inside a Petroleum Coke
Calcined coke is the best material for making carbon anodes for smelting of alumina to aluminum. Calcining is an energy intensive industry and a significant amount of heat is wasted in the calcining process. ... Zhang, Zexuan, "Simulation of Combustion and Thermal-flow Inside a Petroleum Coke Rotary Calcining Kiln" (2007). University of …
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Rotary Kilns
Petroleum Coke Combustion; 6.9. Scrap Tire Combustion; 6.10. Pulverized Fuel (Coal/Coke) Firing in Kilns; 6.11. Pulverized Fuel Delivery and Firing Systems; ... Rotary Kiln Petroleum Coke Calcination Process: Some Design Considerations. 11.1. Introduction; 11.2. The Rotary Calcining Integrated System; 11.3. Direct-Fired Kiln Characteristics
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Thermal-flow Inside a Petroleum Coke Rotary Calcining Kiln …
Thermal-flow Inside a Petroleum Coke Rotary Calcining Kiln. Posted Jul 14, 2012, 12:16 a.m. EDT Fluid & Heat, Heat Transfer & Phase Change, Computational Fluid Dynamics (CFD), Chemical Reaction Engineering, Materials, Mesh, Parameters, Variables, & Functions, Studies & Solvers Version 4.0 5 Replies.
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Modeling and simulation of petroleum coke …
Petroleum coke calcination in rotary kilns will be described by means of a model based on mass and energy conservation. Heat transfer by conduction, convection …
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Mathematical Model of Optimum Control for Petroleum Coke …
The developed mathematical model of calcination of petroleum coke adequately describes the chemical transformations in terms of mass loss of the charge in the chosen rotary tube kiln. Based on the results, the following algorithm for determining the optimum conditions of coke annealing can be proposed:
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Rotary Kiln Petroleum Coke Calcination Process: …
Rotary Kiln Petroleum Coke Calcination Process: Some Design Considerations | Semantic Scholar. DOI: 10.1016/B978-0-12-803780-5.00011-3. Corpus ID: 137972219.
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Numerical Evaluation of the Petroleum Coke and Biomass …
The partial substitution of petroleum coke with alternative solid fuels, such as biomass, is advantageous for mitigating greenhouse gases and energy consumption in cement production. ... on the cement rotary kiln's combustion performance by comparing the two particles' co-combustion behavior to the case of combustion of petroleum coke …
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Simulation of Combustion and Thermal-Flow Inside a Petroleum Coke …
A computational model is established to simulate the combustion and thermal-flow behavior inside a petcoke rotary calcining kiln. The results show that peak temperature is located at the tertiary air zone and a cold region that exists between the natural gas combustion zone and the tertiary air zone causes the coke bed to lose heat …
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Energy Saving Petcoke Rotary Kiln Petroleum Coke …
The rotary kiln is also able to optimize the Petroleum coke calcining operating parameters, be it residence time, temperature gradient, and heat up rate, all of which impact product quality. Petroleum coke kilns can be fueled with: gas, heavy oil, oil, refinery gas, waste oil and solid fuel, fired independently or in combination.
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Rate-based Simulation of Coke Calcination in Rotary Kilns
Keywords: Rotary Kiln, Calcining Processes, Rate-based HYSYS Simulation. Abstract: This paper presents the simulation of the green petroleum coke calcining processes using the simulation program ASPEN HYSYS. The results are validated using actual industrial data. The present study provides a detailed description of the rate-based simulation.
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An Intelligent Control System for Coke Calcination in Rotary Kiln
Petroleum coke is usually calcined in rotary kiln. It is a very prevalent problem of unstable production conditions and low recovery rates in coke calcination process. The temperature field in calcining zone is a crucial factor that affects the output and quality of calcined petroleum coke (CPC). Based on the analysis of the major factors affecting the …
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The comparison between vertical shaft furnace and rotary kiln …
At present,the petroleum coke is mainly calcined by vertical shaft furnace or rotary kiln to meet the requirement of prebaked anode used for aluminium reduction in China.Vertical shaft furnace for calcination is quite different from rotary kiln for calcination in the principle of calcination process,calcined coke quality,product availability,production …
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Kinetic Analysis of the Coke Calcination Processes in Rotary Kilns
The results were compared with actual industrial rotary kiln data in order to validate the simulation and there was a reasonable agreement for the two different GPCs considered. The methodology of kinetics-based simulation described in this study may be used to predict coke calcining kilns performance regardless of the green coke composition.
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Petroleum Coke – Alpha Thermal Process
In the aluminum industry CPC is required for the manufacture of anodes for the aluminum potlines and in the steel industry it is used to manufacture carbon and graphite electrodes. Rotary kiln calcination is carried at high temperatures to remove volatile combustion matter of green coke (6 – 20 wt%) and densify the product for use as anodes.
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The comparison between vertical shaft furnace and rotary kiln …
Calcined coke is the best material for making carbon anodes for smelting of alumina to aluminum. Petroleum coke is usually calcined in a gas-fired rotary kiln or rotary hearth at high temperatures ...
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An Intelligent Control System for Coke Calcination in …
Abstract: Petroleum coke is usually calcined in rotary kiln. It is a very prevalent problem of unstable production conditions and low recovery rates in coke calcination process. The …
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Simulation of the Coke Calcining Processes in Rotary Kilns
A one-dimensional steady-state mathematical model has been developed to simulate the process of calcination of petroleum coke in a rotary kiln. A simulation is made to reproduce the operating ...
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Calcining petroleum coke of pot furnace and …
July 23, 2019. Retort calciner and rotary kiln are the two main types for petroleum coke calcination. Rotary kiln is widely used in Europe and the United States, while retort calciner is used earlier and more in China. …
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