Evaluation and analysis of exergoeconomic performance for the calcination process of green petroleum coke in vertical shaft kiln. DOI: CC BY-NC-ND 4.0.Web

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

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

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

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

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

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

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

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

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

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

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

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

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

Keywords: Calcined petroleum coke; shaft calcining technology, rotary kiln technology. General GPC is a by-product of the oil refining process. Heavy Crude Oil (bottoms) are …Web

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

Abstract. 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 …Web

C) are key measures for coke calciners [1]. For rotary kiln calcined coke, calcination levels typically range from an RD of 2.04 to 2.07 g/cm3 and L C of 24 to 29 Å. Due to the different technology of a shaft calciner, the residence times are much longer, and it is not uncommon to see shaft cal-cined product with a higher RD (2.07–2.10 g/cm3 ...Web

under gravity. Parallel evolution of shaft kiln technology with the more complex dry process rotary kilns kept the mix of pyroprocessing technologies in China's cement industry more diverse than in almost any other country. Coal is the primary fuel burned in cement kilns, but petroleum coke, natural gas, and oil are also consumed.Web

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

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

eventually been shelved or cancelled. This article presents facets of Chinese shaft technology construction, operation, maintenance routines and produced CPC …Web

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

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

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

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

India Advantages and disadvantages of Vertical Shaft Lime Kiln. India · Abstract. The calcination principle of composite firing shaft kiln is: mix the solid fuel (coke or anthracite) with qualified stone evenly, use rotary discharging device equipped on kiln roof to discharge the mixture into the kiln, then under its own gravity the mixture …Web

The petroleum coke produced by a coking unit is generally referred to as green petroleum coke. Green petroleum coke contains relatively minor concentrations of volatiles, which are removed in a calcining unit. The …Web

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 China. Vertical shaft ...Web

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