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EP2336267B1 EP09813041.2A EP09813041A EP2336267B1 EP 2336267 B1 EP2336267 B1 EP 2336267B1 EP 09813041 A EP09813041 A EP 09813041A EP 2336267 B1 EP2336267 B1 EP 2336267B1 Authority EP European Patent Office Prior art keywords aromatic component oil composition stock oil parts weight Prior art date 2008-09-09 Legal status (The legal status is an assumption and is …
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 flexibility. Shaft calciners make a high bulk density, coarse particle size product and several papers have been published recently highlighting these benefits.
The green coke then undergoes a calcining process: it is fed through a rotary kiln at temperatures in excess of 1100 ° C (2000 ° F), which controls coke density and burns off any remaining volatiles in the coke. Cooling, Storage and Shipping. The newly formed needle coke …
the rotary kiln. Direct-fired rotary kilns can operate in either the co-current mode, where combustion gases and solids move in the same direction, or in the counter current mode, where the gases and solids move in opposition to each other. While all FEECO kilns are custom engineered around the material to be processed and the unique processing
Variable Fuel Coke Anode Coke Needle Coke Temperature, °F 910 - 930 925 - 950 925 - 950 Pressure, psig 15 typical 18 – 60+ 50 – 90+ Recycle Ratio 0 - 5% typical 0 – 50%+ 60 – 120%+ Coking Time, hours 9 -18 24 36 •Higher Temp lower coke VCM content •Low Pressure higher liquid yields / lower coke yield
Needle coke of excellent uniaxial orientation and thermal expansion of 0.6 × 10−6/°C was produced at 460°C in a tube bomb from a low sulfur petroleum vacuum residue by reducing the ...
Disclosed herein are a process for producing needle coke, which comprises reducing the ash content in a heavy oil obtained from fluid catalytic cracking of petroleum or in a hydrocarbon material mainly composed of said heavy oil to not more than 0.01 wt % by means of (1) filtration, (2) centrifugation, (3) electrostatic aggregation or (4) a combination thereof, and coking the thus treated ...
Jul 11, 2018· Vertical kiln / shaft kiln operation principle,we can supply 100---1200TPD Vertical kiln / shaft kiln and rotary kiln for you .Whatsapp:+8615638871509Email:l...
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 flexibility. Shaft ...
The delayed coking process is outlined and mechanisms of coke formation put forward including considerations of the composition of feedstocks. As graphite manufacture uses calcined delayed cokes of which the most valuable is needle-coke, a comparison of rotary kiln, rotary hearth and vertical shaft calciners is made.
Alibaba.com offers 803 vertical shaft kiln for petroleum coke products. A wide variety of vertical shaft kiln for petroleum coke options are available to you, such …
coke or graphite needle-grade coke depending upon its physical and chemical characteristics with needle-grade coke having a higher purity than anode-grade coke which is used in electric furnaces in aluminum and steel smelting. Petroleum coke calcining may be achieved in a rotary kiln, shaft calciner and rotary hearth. A rotary . kiln
The thus treated material is charged into a delayed coker and coked therein at a temperature of 450° to 500° C. to obtain green coke. This green coke is calcined at a temperature of 1,200° to 1,500° C. by using a rotary kiln, rotary hearth electric furnace, shaft kiln or the like to obtain needle coke.
Feb 12, 2020· 10%· Abstract. 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 the proportion of high …
Aug 01, 2017· For this reason, only mixed-feed single shaft kilns using lump coke as fuel can be used up to date. Figure 5 shows the main product categories as well as the most important specification parameters of quicklime. It also shows the commonly used lime kiln types depending on the product category. The number of kilns shown in this table is a rough ...
The move to the use of rotary kilns, despite the painful readjustments in working methods that they demanded, and despite their poor energy efficiency compared with shaft kilns, took place because they were fired with coal, which was still cheap in Britain. The result was a rapid diminution in the use of coke in the first two decades of the ...
Shaft Calciners may remain to be an important Shaft Calciners, Light Metals, 2011, 895-900 element in China, but their market share will shrink with new [11] B. Desgroseilliers, Lise Lavigne and Andre Proulx, "Alcan Approach for bigger calciner plants that are building using rotary kiln Evaluation and Selection of Coke Sources," Light ...
Petroleum coke, abbreviated coke or petcoke, is a final carbon-rich solid material that derives from oil refining, and is one type of the group of fuels referred to as cokes.Petcoke is the coke that, in particular, derives from a final cracking process—a thermo-based chemical engineering process that splits long chain hydrocarbons of petroleum into shorter chains—that takes place in units ...
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 and energy conservation principles. The system of
Needle coke is used . ... Through comparison with the rotary kiln and conventional shaft calciner, it proves its own technical characteristics and advantages: higher capacity, high quality ...
Jul 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. There are great differences between the two in calcination process principle, yield, capacity, calcination quality, floor area, construction ...
There are three main process technology used for the purpose of petroleum coke calcination – Rotary Kiln, Rotary Hearth and Shaft Calcining Marlin Energy Group can offer a variety of solutions to aim customer requirements, including product blending and technology.
A process for calcining petroleum coke in a moving bed vertical shaft kiln is. Petroleum coke calcination processes — present and future | 2016714-N. Gimaev, Production and Application of Calcined Needle Coke (Thematic 1.Bashkirian Scientific-Research Institute for Petroleum Process 【PDF】Calcinations of Petroleum coke
Dec 20, 2014· 10%· Differences in the production and quality of shaft calcined coke versus rotary kiln and rotary hearth CPC have been well documented.16,17 Shaft CPC has a lower porosity and higher bulk density due to the slower heat-up rate and is coarser in particle size. Shaft CPC produced in older calciners can be dustier due to the agglomeration of fine ...
Shaft kilns can burn stone from a minimum of 20mm diameter up to 175mm. Some shaft kilns can be operated on natural gas, liquid and solid fuels. This type of kiln tends to produce medium reactivity quicklime, which can then be used in a number of industrial processes including the manufacture of iron and steel and aerated concrete blocks.
Petroleum coke is a valuable and essential commercial product that is used directly in a wide range of applications including aluminum manufacturing, fuels, and numerous other products including steel, glass, paint, and fertilizers. Petroleum coke is also used as a fuel in power generation, cement kilns …
The major problem with traditional shaft kiln is obtaining uniform heat release and movement of the burden across the shaft. Fuel injected at a wall usually does not penetrate more than 1m into a packed bed. This limits the kiln productivity. Figure 1 shows a schematic diagram of a shaft kiln. The challenge of operating a shaft kiln to
Sep 23, 2014· The article contains sections titled: 1. Introduction 2. Physical and Chemical Properties 2.1. Physical Properties 2.2. Chemical Properties and Composition 3. …