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. …

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 ...

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:

Calcined coke is an important 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. Efficiently managing this energy resource is tied to the profit margin and survivability of a calcining plant. To help improve the energy …

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 ...

Petroleum coke shaft calcining technology - ... Keywords: Calcined petroleum coke; shaft calcining technology, rotary kiln technology. 1. General GPC is a by-product of the oil refining process ...

Carbon electrodes used in the aluminum industry are made from green petroleum coke, which should be calcined to remove moisture and volatile matter, and to acquire an appropriate crystalline structure. This process …

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 …

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.

The process of calcining petroleum coke in a rotary kiln for the production of anodes is a very complicated exothermic reaction. Mathematically modeling the rotary kiln used for the calcination of the coke is very difficult, because the main problem is that the relationships between input variables and control variables are complex, nonlinear, containing time …

The calcination process of green petroleum coke in the rotary kiln has been studied in the p ast . years. A schematic of the process is shown i n Fig. 1. The process consists of f our major equipment,

Rotary Kiln Petroleum Coke Calcination Process. A. A Boateng, in Rotary Kilns (Second Edition), 2016. Abstract. 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 petroleum coke. Calcined petroleum coke is an important industrial commodity that links the oil and ...

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 …

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.

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 …

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 …

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 …

Coke Calcining Plants. Coke-calcining plants receive green petroleum coke from oil refineries. 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.

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.

Calcining of petroleum coke is done in the rotary kiln. The kiln components consist of shell, tires, carrying stations, seals, refractory and a drive train, which includes girth gear, …

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 ...

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.

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

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.

Rotary Kiln Petroleum Coke Calcination Process: Some Design Considerations | Semantic Scholar. DOI: 10.1016/B978-0-12-803780-5.00011-3. Corpus ID: 137972219.

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 …

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.

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 …