0086-21-58386256
Annual mass of petroleum coke dust removed from the process through the dust collection system of the coke calcining unit (metric tons/year) and whether coke dust is recycled to the unit (e.g., all dust is ... Monthly mass of green coke fed to the coke calcining unit (metric tons/year). Monthly mass of marketable petroleum coke produced by the ...
Superior solutions for the mining industry to improve the efficiency of calcination. With over a century of experience in the mining and chemical processing industries around the world, offers equipment, parts …
It can be seen from Table 1 that the true density of green coke in three parts is about 1.4 g/cm 3, and their true density gradually increases from top to bottom, while the volatile content gradually decreases: GC-U has the lowest true density and the highest volatile content.The ash contents in the three green cokes are very low, at 0.02%. The …
In the calcining p rocess, the green coke feed is heated to a . ... coking, calcining as well as the handling systems between the refinery, calciner and final customer. This paper will discuss how ...
Calcinations of coke are usually d one in a rotary kiln at about. 1300°C to 1500°C. During the process the coke is further. decomposed, increasing in the carbon to hydrogen ratio from 20 of ...
of kinetics-based simulation described in this study may be used to predict coke calcining kilns performance regardless of the green coke composition. Keywords: Rotary Kiln, Calcining Processes, Kinetics, Simulation. 1 Introduction Calcined petroleum coke (CPC) suitable for aluminum industry anodes calls for a high quality standard.
Table 1. Typical sponge coke specifications Item Green coke Calcined coke Table 2. Typical needle coke specifications Item Green coke Calcined coke Volatile Matter Volatile Matter Bulk Density Bulk Density Real Density …
This has dramatically changed the availability of high quality green coke in the traditional markets, particularly in the United States. In the late 1990's, Aminco strategically positioned itself in China where low sulfur and low metal green petroleum coke is available and suitable for calcining and carbon anode manufacturing.
offers the process, equipment and system design capability and experience to supply complete calcining systems, from feed to discharge, chute to stack. Our mineral thermal processing know-how and ability to develop, design, program and commission complete control systems ensures the most efficient and productive operation of …
Calcining processes including handling and storage of raw petroleum coke may result in Particulate Matter (PM) and gaseous emissions. Concerns have been raised over the potential association between particulate and aerosol pollution and adverse respiratory health effects including decrements in lung …
35 rowsCoke-calcining plants receive green petroleum coke from oil refineries. The …
In the calcining process, the green coke feed is heated to a sufficiently high temperature to drive off any residual moisture, and to drive off and combust any residual
API, 2008; USEPA, 2011Petroleum coke consists of two substances: green. coke and calcined coke. The principal difference between the substances is the amount of …
Kinetic analysis of the green petroleum coke calcining processes using the simulation program HYSYS and actual industrial data is presented. ... the whole calcination system is determined as 0.507 ...
The thermal diffusivity of petroleum coke decreased during the calcining process. With increasing temperature, coefficient of heat conductivity and specific volume heat of the petroleum coke increased with a decreasing variation rate. The research provides a database for the calcining graphitization process of petroleum coke.
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.
The quality of calcined petroleum coke used in primary aluminum production is affected by each of the refining and calcining processes including choice of crude, many of the initial refinery processing steps, coking, calcining as well as the handling systems between the refinery, calciner and final customer.
Water cooling of coke (breeze or 30–40 mm lumps) directly after calcining does not harm the basic properties of the coke. 3. Petroleum coke with lump size less than 40 mm should be calcined not ...
a wide range of green coke feeds including needle, shot, fluid or tar pitch cokes. The rotary kiln is also able to ... Coke calcining systems Table 2. Typical needle coke …
More particularly, the present invention relates to an improved feeding system for feeding green coke into a coke calcining apparatus. Processes for calcining green coke to produce calcined coke are well-known. Green coke is a carbonaceous material containing various solid hydrocarbons and is derived from various petroleum hydrocarbon fractions.
Petroleum coke calcining is thermal treatment of green petroleum coke (GPC) above 1200 C. to benefit the material by removing moisture, volatile matter and other green coke impurities, while increasing density and decreasing electrical resistivity. Calcined petroleum coke is mainly used to produce anodes used in the aluminum industry, steel ...
Coke calcination is a process that involves the heating of green petroleum coke in order to remove volatile material and purify the coke for further processing. Calcined coke is vital to the aluminum industry, where it is used to produce carbon anodes for aluminum production. Calcined coke is also widely used as
2. Green coke feeding system There are many more calcination units and feeding entrances for the new generation shaft calciners. An automatic green coke distribution …
prior to introduction into the rotary kiln for calcining. The schematic of the kiln is shown in Figure 1 and the calcining flow chart in Figure 2. The rotation and the slope (generally about 4 %) of the kiln facilitate the movement of the …
When there are changes in the green coke feed properties, such as the moisture or volatile content, it is important for the calcining furnace to be able to react quickly to maintain a consistent product quality. The shaft type furnace by its very nature of operation cannot react quickly to changes in coke feed.
In order to increase the degree of calcination of fine factions, the target temperature was increased by 40°—from 1240 to 1280 °C since the calcination temperature is very critical for forming the desired structure and physical properties of calcined petroleum coke. The process of calcining petroleum coke with different sulfur levels …
Modern shaft calciners have automated systems for feed, discharge, and even waste heat recovery. Shaft calcined coke often exhibits a higher bulk density but can lead to challenges in silo ...
A new calcining technology has been developed to lower the thermal expansion coefficient considerably less than the traditional methods at the calcining stage of green coke. The results obtained ...
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 …
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 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.
Calcined petroleum coke is obtained by calcining petroleum coke at high temperatures under the condition of 1250 • C to 1350 • C. Because of its low cost, high carbon content, and easy ...