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Recent results on the surface modification of petroleum cokes and their electrochemical properties as anodes of secondary lithium batteries are summarized The surface of petroleum coke and those heat treated at 1860 2800 °C were fluorinated by elemental fluorine F 2 chlorine trifluoride ClF 3 and nitrogen trifluoride NF 3
·In this work four kinds of green needle cokes coal based green needle coke and petroleum based green needle coke have been used as the raw materials to investigate the changes of micro
·Petroleum Cokes Petroleum Coke Formula Petroleum coke is a complex mixture of various hydrocarbons and impurities so it does not have a specific chemical formula It is primarily composed of carbon and hydrogen but also contains small amounts of sulfur nitrogen and other elements
·sulphur content The sulphur content in cokes depends on the source and type of crude oils and on the final temperature of the calcination of green cokes The sulphur content in the calcined petroleum cokes available now is in the range of % However a few calcined petroleum cokes have a sulphur content of about 1 2 % Low sulphur
·Non calcined petroleum coke can serve as an anode material for lithium ion batteries LIBs Nevertheless this method results in materials with insufficient conductivities and low Coulombic
But lower locomotive fuel prices and the impact of international coking coal prices which are linked to export rail contracts could drive a decrease in total revenue during the fourth quarter 9 October Argus — The quality of some California origin petroleum cokes has shifted in recent months as an influx of Canadian crude shipping
·Petroleum coke PC is a waste by product generated during the oil upgrading processes by the petroleum industry The continuing accumulation of large quantities of PC requires the development of innovative strategies for the effective utilization of this carbon rich material In this study PC was used for the removal of naphthenic acids NAs and acid
Calcined petroleum coke is very important to link the oil and metallurgical industries for multiple applications shot fluid or tar pitch green cokes The rotary kiln is also able to optimize the coke calcining operating parameters be it residence time temperature gradient and heat up rate all of which impact product quality Coke
Due to widespread global mercury pollution via anthropogenic activities such as coal combustion and its severe toxicity even at low concentrations it is necessary to remove mercury from power plant flue gas to protect both humans and the ecosystem Currently significant efforts are being made to maximize Hg0 adsorption rates while minimizing the impact on the cost of electricity
The question of treating high impurity coke to enable use in anodes was examined A mineralogical analysis of different cokes demonstrated that more than 99 % of the particles contained the expected concentrations of sulfur nickel and vanadium while a small number of particles contained inclusions of other impurities
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·The morphological determination of petroleum coke was necessarily important and widely applied in the gasification of petroleum coke [1] optimization of the coking process based on morphology control [2] [3] and/or improvement [4] carbonization mechanism research [5] [6] co processing of coal and petroleum derivative oil [7] and manufacturing of premium
·Petroleum coke was thermally treated on a fixed bed reactor in a temperature range of 1173 1673 K The changes of the elemental composition and crystalline structure of petroleum coke with heat treatments as well as the gasification reactivity of the heat treated petroleum cokes were investigated The results showed that the petroleum coke was
·This paper discusses the combustion characteristics of the various types of petroleum cokes and blends used for steam raising and the fireside behavior of the mineral matter they contain A1203 CaO MgO etc Deposits formed by coke enriched with accessory minerals developed as a result of inertial impact on fly ash composed of accessory
·The effect of particle size and oxidation degree of new carbon microfillers based on coal pitch CP and petroleum pitch PET cokes on the structure as well as thermal mechanical and electrical properties of the composites based on ultrahigh molecular weight polyethylene UHMWPE was investigated The composites studied have a segregated
DOI / Corpus ID 104464373; The quantitative assessment of coke morphology based on the Raman spectroscopic characterization of serial petroleum cokes
Petroleum coke is a solid by product of petroleum refining and is used in the production of carbon electrodes for the aluminum industry graphite electrodes for steel making as fuel in power generation and as fuel for cement kilns In the United States more than million tonnes × 10 6 tons of petroleum coke are used by major utilities as shown for 2000 in Table
·Alba calciner was dealing with 17 different types of cokes from different sources in previous years but recently reduced to five GPC sources In recent years considering financial economic challenges and scarcity in green coke qualities Alba calciner team had to optimize the process to cope with these challenges
·Anode quality is important due to its impact on cell operation carbon and energy consumption and environment Properties of coke one of the principal raw Brandtzaeg and Oye Structural changes of petroleum cokes during sulphur evolution Light Metals 1986 93 604 13 L Edwards Thermal Desulfurization of Petroleum Coke for
·Impurity levels in petroleum cokes have been progressively increasing in recent years as the refineries have been obliged to accept a higher proportion of heavy sour crudes [6] [7] This trend and changes in refinery practice have resulted in an increase in the sulfur content of the petroleum coke and/or an increasing coke cost [1] An alternative supply of anode coke is
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
The metallurgical cokes were produced in a laboratory oven from blends of petroleum coke−bituminous coal and then characterized in terms of abrasion strength and reactivity to CO 2 There is a clear relation between the chemical activity of petroleum coke in cocarbonization systems with coal and improvements in metallurgical coke quality
