Simulation of Combustion and Thermal-Flow Inside a Petroleum Coke Rotary Calcining Kiln—Part II: Analysis of Effects of Tertiary Airflow and Rotation ASME J. Thermal Sci. Eng. Appl. 2
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.
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 below 80 o C ...
Rotary Kiln. The petroleum green coke is fed into a refractory lined rotary kiln where the volatiles are driven off during the calcining process in an oxygen deficient atmosphere. …
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The calcination process of green petroleum coke 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 removing the moisture
This delay corresponds to the combined residence time of the coke in the kiln and the cooler. Some 2.5 kg of coke (dry basis) were collected per sample. According to the ASTM method for the sieve analysis of petroleum coke, this quantity is sufficient to quantify size fractions with a top size of 19 mm with an uncertainty of 1%. For each test ...
nation of petroleum coke. The movement of solid material in a rotary kiln. The transportation of a solid powder material inside the rotary kiln affects all important physicochemical pro-cesses inside the drum. The overflow motion is usually taken for both the feedstock and the finished product. Two force moments arise as a result of rotation …
The TG/DSC method was used for the experimental study of the calcination of petroleum coke and characterization of coke improved as a result of oxidation. It was found that commercial coke still contained significant amounts of volatile residues. ... the operation of a rotary tube kiln was modeled to determine the optimum conditions of its ...
Petroleum coke shaft calcining technology - ... in shafts, while the west and most of the rest of the world mainly uses rotary kiln technology.
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 50 years, yet are still often overlooked when selecting a new coke calcining furnace. The...
The rotary kiln has an even shorter refractory life due to the tumbling action of the coke eroding the refractory lining. The lining needs yearly repairs, but the start-up …
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 …
A one-dimensional mathematical model was developed for the simulation of petroleum coke calcination in rotary kilns. The model is comprised of 14 ordinary differential equations derived from mass ...
In a rotary kiln, the coke is tumbled to improve heat transfer and consistency of calcination and this reduces the average particle size. ... Petroleum coke is a by-product from crude oil ...
Simulation of Combustion and Thermal-Flow Inside a Petroleum Coke Rotary Calcining Kiln—Part I: Process Review and Modeling Zexuan Zhang, Zexuan Zhang Research Assistant Energy Conversion and Conservation Center, University of New Orleans, New Orleans, LA 70148-2220. e-mail: zzhang ...
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...
The schematic diagram of the petroleum coke calcination rotary kiln employed in the simulation runs is presented in Fig. 1, and its design speci®cations are presented in Table 2. The operational parameters of the calcination kiln and the composition of the green coke are presented in Tables 3 and 4, respectively.
A feasible lining option for rotary kilns measuring 3 m in diameter and 45 m in length is described. Lining design and modern materials are proposed for a calcination kiln used in the production of calcined petroleum coke KEP-2.
The difference between pot calciner and rotary kiln which is used for petroleum coke calciner.Carbon Burning Loss is less in Pot Furnace.
Petroleum coke rotary kiln is a widely used thermal processing equipment in the production of carbon. It mainly uses the high-temperature calcination process to decompose the volatile matter in the petroleum coke and then completely burn the petroleum coke to produce high-quality carbon products with low sulfur content.
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 …
Rotary kiln schematic and kilns equipped with tertiary air fans. ... Petroleum coke as a low-cost by-product was ever used as the conductive filler in cementitious composites, while its mechanical ...
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 …
The calcination of green petroleum coke in rotary kilns presents low operational costs due to the fact that the process is energy self-sufficient (i.e. …
Most of the calcining of petroleum coke is carried out in rotary kilns. In this chapter, we provide some of the characteristics of petroleum coke calcination process in the rotary …
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. Kinetic analysis of the green petroleum coke calcining processes using the simulation program HYSYS and actual industrial data is presented. The rates of physical and chemical …
The developed mathematical model of calcination of petroleum coke adequately describes the chemical transformations in terms of mass loss of the charge …
In articles [7, 8], the lining design and modern refractory materials of the calcination rotary kiln used to produce calcined petroleum coke and mathematical model of technological process for its ...
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 …
A synergy model of material and energy flow analysis for the calcination process of green petroleum coke in rotary kiln January 2021 Thermal Science 26(00):188-188
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.