The present invention is directed to a method for calcining green petroleum coke and more particularly for calcining green petroleum coke utilizing a shaft calciner which will reduce product dusting problems or with a rotary kiln calciner to significantly improve recovery and produce a more consistent and homogeneous product.Web
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GPC *-- green petroleum coke Rotary kiln calciners are widely used for CPC production in the world, while the vertical shaft calciners are used in most Chinese CPC plants. Vertical calciners are stationary calcining furnaces. The technical and economical comparisons between the rotary calcining and the old vertical shaft calcining technologies areWeb
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The calcination equipment for petroleum coke or needle coke calcination is usually rotary kiln and vertical shaft kiln . Increasing the service life of refractories in calcination facility is the key to increase the utilization rate of calcination equipment, to reduce maintenance cost and even to improve the calcination quality, especially when …Web
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Abstract. Delayed petroleum coke is calcined in an internally-fired vertical shaft kiln. A downwardly-moving bed of green coke is preheated in the top of the kiln by rising combustion gases, then heat soaked at calcining temperatures in the intermediate section of the kiln, and finally cooled by recycle gas moving upwardly from the lower part of the kiln.Web
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Table 1 shows the results of a TDS trial in a rotary kiln with green petroleum coke (GPC) containing 4.6% S. The S loss under normal calcining conditions is 9–14% and it is ... The differences between rotary kiln and shaft calciners have been described previously [7]. Rain Carbon operated a small 20 kt/yr shaft calciner in China from 2009 ...Web
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Rotary Kiln Petroleum Coke Calcination Process. A. A Boateng, in Rotary Kilns (Second Edition), 2016. ... or shaft kiln described in the early chapters. However, the rotary kiln has become the industrial workhorse for this purpose due to its flexibility of accepting a wide range of green coke as feedstock, large production capacity, low dust ...Web
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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 80oC by the cooler. Meanwhile, the flue gas from rotary kiln, consisting of un-burnt particulates and volatile matter, is further processed in the incinerator for complete combustion.Web
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Grain stability and yield in both wet and dry Shaft Kiln Technology forms are superior to shaft kilns. The petroleum coke is calcined at the top of the The temperature achieved during the manufacture of vertical shaft kiln which is injected with air, and the CPC is quite high for the shaft kiln at 1350°C, but the steam is injected into the ...Web
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CALCINATION PROCESS OF GREEN PETROLEUM COKE IN VERTICAL SHAFT KILN . Peng LI a, b, c, Baokuan LI a, b *, Zhongqiu LIU a, Wenjie RONG a. a School of Metallurgy, Northeastern University, Shenyang ...Web
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A method of calcining green petroleum coke which includes separating the green coke having a particle size of between 0.1 mm and 50 mm into undersized and oversized fractions, pelletizing the undersized fraction with a binder to form pelletized coke, combining the oversized fraction and the pelletized coke to form a feed mixture, and …Web
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petroleum coke physical sensible heat (i.e. 59.028%) coming from the rotary kiln. To maintain the calcined petrole um coke temperature to be below 80 o C for tran sportation, the cooling technologyWeb
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There are two main types of petroleum coke: green coke and calcined coke. 1. Green Coke. Green coke is the raw material used to produce calcined coke. It is the solid carbon byproduct of the oil refining process. Green coke has a high moisture and volatile matter content. 2.Web
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the shafts. In a rotary kiln, the coke is tumbled to improve heat transfer and consistency of calcination and this reduces the ... Petroleum coke is a by-product from crude oil refineries, but ...Web
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The kiln to be analyzed is a PFR shaft kiln, which operates in cycles as follows: the burner lances in shaft 1 transport the fuel along with the primary combustion air, while the lances of the shaft 2 expel only primary combustion air. The shaft 1 is called the burning shaft, while the shaft 2 is the regenerative shaft (see Fig. 1).Web
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Download scientific diagram | SEM images of shaft (a) and rotary kiln CPC (b). from publication: The History and Future Challenges of Calcined Petroleum Coke Production …Web
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The essential part of the refractory materials production on a basis of sintered dolomite as raw material is the process of dolomite calcination. The technology process usually takes place in shaft or rotary kilns, where the dolomite stone, CaMg(CO3)2, is subjected to a high temperature heat treatment. The calcination of the dolomite is highly endothermic …Web
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Sun Yi, Xu Haifei, Wang Yubin, Cui Yinhe and Liu Chaodong, "The Comparison Between Vertical Shaft Furnace and Rotary Kiln for Petroleum Coke Calcination," Light Metals, 2010, 917–921. ... "Coke Calcination Rotary Kiln vs Shaft Calcining," (Paper presented at 2nd International Carbon Conference, Kunming, Sept 17–19, 2006).Web
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The aim of this work was to establish a mathematical model for the analysis of calcining process of petroleum coke in a 24-pot calciner via computational fluid dynamics (CFD) numerical simulation method. The model can be divided into two main parts (1) heterogeneous reacting flow of petroleum coke calcination in the pot was simulated …Web
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Sun Yi, Xu Haifei, Wang Yubin, Cui Yinhe and Liu Chaodong, "The Comparison Between Vertical Shaft Furnace and Rotary Kiln for Petroleum Coke Calcination," Light Metals, 2010, 917–921. ... "Coke Calcination Rotary Kiln vs Shaft Calcining," (Paper presented at 2nd International Carbon Conference, Kunming, Sept 17–19, 2006).Web
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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 ...Web
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The prime 9 factors include starting from raw green petroleum coke composition (volatile matter (VM), 10 moisture, sulphur content etc.,), particle size, hardness, calcining conditions (temperature, 11 residence time and heating rate) and the type of technology chosen for calcination (Rotary 12 Kiln, Vertical Shaft Kiln and Rotary hearth furnace).Web
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This approach has been found on single shaft using natural gas [13,14] or heavy oil as fuel [15], ASK with natural gas as fuel [16,17], and mixed-feed shaft kilns with coke [18,19]. ...Web
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A real-time mathematical model for the two-dimensional temperature field of petroleum coke calcination in vertical shaft calciner was developed based on computational fluid dynamics. In the modeling process, the petroleum coke discharging process was described by the solid viscous flow, the dynamic heat flux boundary …Web
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Vertical Shaft Kiln technology was originally developed in Europe, but China has adopted this technology as the standard in coke calcination. SIL has set up the project using the vertical shaft kiln technology as it offers various advantages over the rotary kiln technology such as improved CPC yield, better raw material conversion rate (1.3 vs ...Web
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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 .Web
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The comparison between vertical shaft furnace and rotary kiln for petroleum coke calcination. S. Yi Xu Haifei Wang Yubin Cui Yinhe Liu Chaodong. Chemistry, Materials Science. 2010; 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 ...Web
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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 …Web
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Shaft kiln is a vertical rotary kiln. Shaft kiln is not widely used, but it has many advantages such as energy conservation, heat preservation, good sealing and so on. ... The mixed kiln can use block coal such as lump coal, coke, and petroleum coke; the gas kiln can use high calorific value fuel such as natural gas, coke oven gas, petroleum ...Web
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Delayed petroleum coke is calcined in an internally-fired vertical shaft kiln. A downwardly-moving bed of green coke is preheated in the top of the kiln by rising combustion gases, then heat soaked at calcining temperatures in the intermediate section of the kiln, and finally cooled by recycle gas moving upwardly from the lower part of the kiln ...Web
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Abstract. At present, the petroleum coke is mainly calcined by vertical shaft furnace or rotary kiln to meet the requirement of prebaked anode used for Aluminum reduction in …Web
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Compared with studies on a rotary kiln, fewer studies have been conducted on numerical simulations of petroleum coke calcination in a vertical shaft calciner. Zhang et al. 9 – 11 studied the gas combustion in the flue and the temperature and pressure distribution in the pot via the computational fluid dynamics (CFD) numerical simulation …Web
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Delayed petroleum coke is calcined in an internally-fired vertical shaft kiln. A downwardly-moving bed of green coke is preheated in the top of the kiln by rising combustion gases, then heat soaked at calcining temperatures in the intermediate section of the kiln, and finally cooled by recycle gas moving upwardly from the lower part of the kiln.Web
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