After removing the moisture by the drying kiln, dried green petroleum coke is then undergone the calcination process in the rotary kiln. Afterwards, it is then cooled to a temperature...
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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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by the drying kiln, dried green petroleum coke is then undergone the calcination process in the rotary kiln. Afterwards, it is then cooled to a temperature below 80 o C by the cooler.
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The calcination process of GPC in the rotary kiln has been studied in the past years. A schematic of the process is shown in fig. 1. The process consists of four major equipment, including the drying kiln, the rotary kiln, the incinerator, and the cooler. After
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Green petroleum coke is calcined in a rotary kiln under protective atmosphere at temperatures around 1100°C. The process is similar to the calcination of the torrefied carbohydrate, but...
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Aimed at the low quality of the product and low recovery rate of coke calcinations in rotary kiln, an intelligent optimization operations system for coke calcinations rotary kiln is presented to stabilize the temperature in calcination zone in this paper. The key operation parameters in rotary kiln are optimized using improved case-based reasoning (CBR). The case searching and matching …
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Rotary Kiln. The first rotary kiln for calcining GPC was used at Great Lakes Carbon in 1935,2 although rotary kilns had been used in the cement industry prior to that. Rotary kilns for CPC production are steel shells lined with high-temperature refractory brick; kilns can measure 30–85 m in length and 2.4–4.4 m in diameter.
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DOI: 10.2298/TSCI210131188L Corpus ID: 235631594; A synergy model of material and energy flow analysis for the calcination process of green petroleum coke in rotary kiln
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Coke calcination is performed in different types of kilns, of which rotary kilns are the most commonly used. Rio Tinto operates four rotary kilns at three sites in Canada. At these sites, the mass of the green petroleum coke (GPC) feed and of the produced CPC are continuously measured by belt scales.
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The differences in density between shaft calcined coke and rotary kiln coke are relatively small at low VM (9-10%) but increase as the green coke VM increases. Some high VM (>13.5%), fine particle size green cokes calcined in a rotary kiln can give mercury apparent densities as low as 1.67-1.70 g/cc. Such low
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Ke ywords — Calcination, green coke, petroleum coke, rotary kiln . I. ... Mathematical Model of Optimum Control for Petroleum Coke Production in a Rotary Tube Kiln. Article. Full-text available ...
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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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The calcination of green petroleum coke in rotary kilns presents low operational costs due to the fact that the process is energy self-suf®cient (i.e. does not require fuel), and that it presents higher processing capacity compared to the conventional processes. Also, since it is a * Corresponding author. Tel./fax: 155-31-3238-1789.
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Furthermore, the synergy model for resource utilization and energy saving has also been developed. The results show that the energy efficiencies of the drying kiln, rotary kiln, incinerator and the cooler are 63.574%, 37.709%, 76.782% and 74.758%, respectively. Meanwhile, the synergy degree of the whole calcination system is determined as 0.507.
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The objective of this study is to simulate the green petroleum coke calcining processes using the simulation program HYSYS and using actual industrial data. Because counter-current mass flow is not allowed in the HYSYS program, the kiln was described by using fictive streams and unit operations. By the simulation, it is possible to predict the operating …
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Coke calcination is a process that involves the heating of green ... The resulting green coke produced from heavy crude oil pro-cessing has a higher sulfur content, which requires a significant ... tional process using rotary kilns, is expected to yield significant energy, environmental, and economic benefits, including the ...
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Request PDF | Rotary Kiln Petroleum Coke Calcination Process | Petroleum coke is a by-product of the coker process in the oil industry. In its raw form, it is also called "green coke" or green ...
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In this first of a two-article series, a one-dimensional steady-state mathematical model has been developed to simulate the process of calcination of petroleum coke in a rotary kiln.
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The green coke is blended and fed into rotary kilns operating up to 2800°F under a reducing condition. The material exits the rotary kiln as calcined coke with a correct crystalline structure and electrical conductivity properties. These coke properties allow this product to be sold to the primary aluminum industry for use in aluminum ...
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Green petcoke should be calcined to provide an optimal structure. Usually coke calcination process is carried out in tubular rotary kilns (see Figure-1).
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Green petroleum coke (GPC) is an oil refining byproduct that can be used directly as a solid fuel or as a feedstock for the production of calcined petroleum coke. GPC contains a high amount of volatiles and sulfur. During the calcination process, the GPC is heated to remove the volatiles and sulfur to produce purified calcined coke, which is used in the production of …
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Calcination: The dried green petroleum coke is then heated to high temperatures (typically above 1300°C) in a rotary kiln or a vertical shaft kiln. This process removes volatile compounds and moisture, converting the green coke into calcined petroleum coke, which is predominantly carbon.
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Coke calcination is a process that involves heating green petroleum coke to purify it and eliminate volatile materials for subsequent processing. Due to the complexity of the rotary kiln used in this process, conducting experimental studies can be challenging and restricted. However, quantitative analyses based on developed models can provide a foundation for optimizing and …
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Rotary kilns have been used successfully for many years to produce calcined coke for the aluminium industry and they offer a high level of automation, performance and flexibility. Shaft calciners make a high bulk density, coarse particle size product and several...
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2.1. Rotary kiln technology Uses a rotating horizontal cylinder of steel lined with refractory bricks of high alumina content on the inside. The diameter of rotary kilns is typically between 2.5 to 4.5 meters and their lengths vary from 40 to 80 meters. The kiln shell is supported on 2 to 3 tyres, which ride on two supporting rollers. The kiln
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usually calcined in a gas-fired rotary kiln or rotary hearth at high temperatures, around 1200 to 1450 °C, to remove moisture, drive off volatile matters, increase the density of the coke ...
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The process of calcining coke in a rotary kiln is always associated with both inevitable and controlled coke losses. Inevitable losses occur due to both demoisturization and devolatilization, i.e. such losses are a function of the properties of a coke source. Controlled losses are a function of the following: calcination parameters, the condition of the exhaust gas duct system, and …
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Controlled losses are a function of the following: calcination parameters, the condition of the exhaust gas duct system, and several green coke quality characteristics, such as coke …
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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, around 1200 to 1450 °C, to remove moisture, drive off volatile matters, increase the density of the coke, increase physical strength, and electrical conductivity of the material. Rotary kilns have ...
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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 specifies the lining requirements for some parts of such kilns. The lining bricklaying specifics and main techniques with respect to rotary kilns (including foreign designs) are demonstrated. A feasible lining …
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