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International Journal of Minerals,Metallurgy and Materials 2022年第3期29卷 455-463页

作者： Xiaoshuang Guo Zhengyao Li Jicai Han Dong Yang Tichang Sun School of Civil and Resource Engineering University of Science and Technology BeijingBeijing 100083China Key Laboratory of Ministry of Education for Efficient Mining and Safety of Metal Mines University of Science and Technology BeijingBeijing 100083China Zijin(XiamenEngineering Co. Ltd.Xiamen 361000China

petroleum coke is industrial solid wastes and its disposal and storage has been a great challenge to the environment. In this study, petroleum coke was utilized as a novel co-reduction reductant of low-grade laterite ore and red mud. A ferronickel product of 1.98wt% nickel and 87.98wt% iron was obtained with 20wt% petroleum coke, when the roasting temperature and time was 1250°C and 60 min, respectively. The corresponding recoveries of nickel and total iron were 99.54wt% and 95.59wt%, respectively. Scanning electron microscopy-energy dis- persive spectrometry (SEM-EDS) analysis showed metallic nickel and iron mainly existed in the form of ferronickel particles which distrib- uted uniformly at a size of approximately 30 μm with high purity. This study demonstrated that petroleum coke is a promising reductant in the co-reduction of laterite ore and red mud. Compared to other alternatives, petroleum coke is advantageous with reduced production cost and high applicability in anthracite-deficient areas.

关键词： petroleum coke ferronickel co-reduction solid waste utilization

Effects of pH on rheological characteristics and stability of petroleum coke water slurry

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petroleum Science 2016年第4期13卷 782-787页

作者： Fu-Yan Gao Eric-J.Hu Ningbo Institute of Technology Zhejiang University School of Mechanical Engineering University of Adelaide

In this study, the effects of pH on slurrying properties of petroleum coke water slurry（PCWS） were investigated. The slurrying concentration, rheological characteristics and stability of PCWS were studied with four different types of additives at pH varying from 5 to *** results showed that the slurrying concentration, rheological characteristics and stability of PCWS all increased at first and then decreased with increasing pH from 5 to 11,and a pH of around 9 was found to be the most favorable acid–alkali environment to all these three slurrying properties. It was also indicated that only in a moderate alkaline environment can the additives be active enough to react with particle surfaces sufficiently to obtain good slurrying concentration and form a stable three-dimensional network structure, which can support strong pseudoplastic characteristics and good stability. An acid environment was a very unfavorable factor to the slurrying properties of PCWS.

关键词： petroleum coke petroleum coke water slurry pH Slurrying concentration Rheological characteristics Stability

Orientational Separation of Sulfur in petroleum coke by Alkali Calcining and Reflux Washing

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China petroleum Processing & Petrochemical Technology 2023年第4期25卷 93-105页

作者： Su Song Li Minting Ye Fu Wei Chang Li Xingbin Deng Zhigan Faculty of Metallurgy and Energy Engineering Kunming University of Science and TechnologyKunming 650093China State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization Kunming University of Science and TechnologyKunming 650093China

The application of high-sulfur petroleum coke after desulfurization in aluminum electrolysis anodes is an important development trend. However, removing sulfur from high-sulfur petroleum coke is still a significant *** study proposes alkali calcining and reflux washing to examine the impacts of temperature, particle size, the mass ratio of Na_(2)CO_(3) to NaOH, and total sodium addition on the desulfurization efficiency and mechanism. The results show that the desulfurization rate increases with increasing temperature, increasing total sodium content, and decreasing particle size. The addition of alkali can significantly reduce the opening-ring reaction temperature of thiophene and convert organic sulfur into inorganic sulfur(Na_(2)S). Three washing methods were compared, and reflux washing was selected to separate inorganic sulfur(Na_(2)S) from calcined petroleum coke. The sulfur content in petroleum coke decreased from 7.29% to 1.90%, with a desulfurization rate of 80.13% under optimal conditions. The petroleum coke was analyzed before and after desulfurization using X-Ray diffraction(XRD), Scanning Electron Microscopy(SEM), Infrared Spectroscopy(IR), Thermogravimetric Analysis and Differential Scanning Calorimetry(TG-DSC), Gaschromatography-mass Spectrometry(GC-MS). The results show that thiophene and benzothiophene in petroleum coke are decomposed and converted into octane and ethyl cyclohexane. These new observations are expected to provide further understanding and guidance for the utilization of highsulfur petroleum coke.

关键词： petroleum coke alkali calcining reflux washing thiophene

Effects of the physical and chemical properties of petroleum coke on its slurryability

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petroleum Science 2012年第2期9卷 251-256页

作者： Gao Fuyan Liu Jianzhong Wang Chuancheng Zhou Junhu Cen Kefa State Key Laboratory of Clean Energy Utilization Zhejiang UniversityHangzhouZhejiang 310027China Ningbo Institute of Technology Zhejiang UniversityNingboZhejiang 315100China

In this study, the effects of particle size distribution （PSD）, chemical composition and pore structure of petroleum coke on the slurryability of petroleum coke water slurry （PCWS） were investigated. Four petroleum cokes were studied, and they showed completely different slurryability. The solid concentration at fixed viscosity （i.e. apparent viscosity of 1000 mPa）（SCFV） of four PCWSs is different from each other, with the highest value of 70.9%, and lowest of 62.1%. The apparent viscosity of the four PCWSs all increased with an increase of the solid concentration. The results showed that the PSD, inherent moisture content, specific surface area and pore volume of petroleum coke were key factors to affect the slurryability. The slurryability was enhanced with increasing PSD range and particle packing fraction, and with decreasing inherent moisture content, specific surface area and pore volume.

关键词： petroleum coke petroleum coke water slurry slurryability particle size distribution pore structure

Inherent relations between yield stress and stability of bubble petroleum coke water slurry

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petroleum Science 2018年第1期15卷 157-163页

作者： Fu-Yan Gao Eric J.Hu Ningbo Institute of Technology Zhejiang University School of Mechanical Engineering The University of Adelaide

The stability of petroleum coke water slurry（PCWS） is currently a hot topic. The inherent relationship between yield stress and stability of bubble-PCWS was studied through orthogonal experiments and range analysis in this work. The results showed that the stability of bubble-PCWS was positively related to the yield stress and that the yield stress could be greatly impacted by the operation conditions during preparation of bubble-PCWS. The main factors affecting the yield stress of bubble-PCWS were solid concentration, aeration time and dosage of frother. However, the effects of aperture size of air distribution plates and type of frother on the yield stress were slight within the experimental range. The optimal conditions for the greatest yield stress were as follows： aeration time of 30 min, solid concentration of 65 wt%, frother dosage of0.030 wt% of the air-dried pulverized petroleum coke, aperture size of air distribution plate of 2-5 lm and AOS *** yield stress and the pour rate of bubble-PCWS under this optimum operation condition could reach maxima of more than 0.4 Pa and 96%, respectively.

关键词： petroleum coke petroleum coke water slurry (PCWS) Stability Yield stress Orthogonal experiment

Improving slurryability, rheology,and stability of slurry fuel from blending petroleum coke with lignite

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petroleum Science 2015年第1期12卷 157-169页

作者： Jun-Hong Wu Jian-Zhong Liu Yu-Jie Yu Rui-Kun Wang Jun-Hu Zhou Ke-Fa Cen State Key Laboratory of Clean Energy Utilization Zhejiang University

petroleum coke and lignite are two important fossil fuels that have not been widely used in China. petroleum coke-lignite slurry （PCLS）, a mixture of petro- leum coke, lignite, water, and additives, efficiently utilizes the two materials. In this study, we investigate the effects of the proportion （7） of petroleum coke on slurryability, rheo- logical behavior, stability, and increasing temperature characteristics of PCLSs. The results show that the fixed- viscosity solid concentration （COo） increases with increasing 7. The ~Oo of lignite-water slurry （LWS, ~ = 0） is 46.7 %, compared to 71.3 % for the petroleum coke-water slurry （PCWS, c~ --- i00 %）, while that of PCLS is in between the two values. The rheological behavior of PCLS perfectly fits the power-law model. The PCWS acts as a dilatant fluid. As decreases, the slurry behaves first as an approximate Newtonian fluid, and then turns into a pseudo-plastic fluid that exhibits shear-thinning behavior. With increasing ct, the rigid sedimentation and water separation ratio （WSR） increase, indicating a decrease in the stability of PCLS. When α is 60-70 %, the result is a high-quality slurry fuel for industrial applications, which has high slurryability （ω0 = 57-60 %）, good stability （WSR 〈 2 %）, and superior pseudo-plastic behavior （n = 0.9）.

关键词： petroleum coke Lignite Coal-water slurry Rheological characteristics Slurry stability

Mass production of highly fluorescent full color carbon dots from the petroleum coke

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Chinese Chemical Letters 2021年第4期32卷 1532-1536页

作者： Junfei Ma Linzhou Zhang Xiu Chen Rigu Su Quan Shi Suoqi Zhao Quan Xu Chunming Xu State Key Laboratory of Heavy Oil Processing China University of Petroleum-BeijingBeijing 102249China Engineering Technology Research Institute o/PetroChina Xinjiang Oilfield Company Karamay 834000China

Heavy oil is treated as an undesirable raw material in traditional refining markets because of its low ***,its rich natural aromatic structure and heteroatomic compounds make it possible to be a precursor to large-scale production of carbon *** heavy oil and three SDA products as precursors,we synthesized highly fluorescent multi-color carbon dots(CDs)by hydrothermal method,which can precisely control the photoluminescence wavelength in the range of 350-650 *** synthesized carbon dots have the advantages of good long-term stability and stability under extreme pH conditions and low ***,the carbon dots synthesized with asphalt as the precursor have the highest fluorescence quantum yield.X-ray photoelectron spectroscopy(XPS)is used to elucidate the effects of different precursor on emission color change and photoluminescence quantum yield(PLQY),thus providing a controlled tuning of the system for the functionalization of *** we further used the CDs in macrophage *** pathway gives a reliable and repeatable industry possibility and may boost the applications of CDs into reality.

关键词： Full color Carbon dots petroleum coke Macrophage labeling SDA

Synthesis of ZnS from organic sulfur in petroleum coke and its photocatalysis properties

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petroleum Science 2010年第2期7卷 268-272页

作者： Zheng Yanjun Wang Xudong Cui Lishan State Key Laboratory of Heavy Oil Processing China University of Petroleum Beijing 102249 China Department of Materials Science and Engineering China University of Petroleum Beijing 102249 China Technical Department Construction Division Offshore Oil Engineering Co. Ltd Mailbox 595 Tianjin 300452 China

Organic sulfur in high sulfur petroleum coke was treated as the S source for synthesis of ZnS photocatalyst. Experimental results showed that with ball milling and subsequent heating treatment, ZnS compound could be successfully synthesized and showed considerable photocatalysis activity for decomposing industrial pollutants. The concentration of methyl orange or ethylene blue may be lowered to less than 5% after being decomposed by the synthesized-ZnS photocatalysis. Results of this study suggested a potential technique of turning high sulfur petroleum cokes from industrial wastes into useful products for environment improvement.

关键词： petroleum coke photocatalysis ZnS ball milling high-sulfur

SO_2 emission characteristics from co-firing of petroleum coke and coal in circulating fluidized bed

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Journal of Southeast University(English Edition) 2005年第1期21卷 48-52页

作者：赵长遂王文选王凤君陈传敏韩松东南大学洁净煤发电及燃烧技术教育部重点实验室南京210096

Combustion and sulfur retention experiments of mixed fuel of petroleum cokeand coal were conducted on a pilot-scale circulating fluidized bed (CFB) combustor with the thermalinput of 0. 6 MW. The effects of several parameters, such as the primary air percentage, excess aircoefficient, bed temperature, Ca/S molar ratio and mass ratio of petroleum coke to coal on SO_2emission were verified. Experimental results show that when the ratio of petroleum coke to coal inthe mixed fuel increases, the SO_2emission increases. The maximum SO_2 emission appears when purecoke burns. The SO_2 concentration in flue gas reduces with the increase in the primary airpercentage, excess air coefficient and Ca/S molar ratio for all kinds of fuel mixtures. Therangebetween 830 t and 850 t is the optimal temperature for sulfur retention during co-firing ofpetroleum coke and coal with the mass ratio R of 1 and 3 in CFB.

关键词： circulating fluidized bed petroleum coke coal co-firing desulfurization

Feasibility of Combustion of petroleum coke in 230t/h Circulating Fluidized Bed Boiler

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Journal of China University of Mining and Technology 2003年第2期13卷 136-141页

作者：韩东太宋正昶徐涛 School

In order to reuse the high sulfur petroleum coke, the waste in chemical industry, as fuel of power plant for energy recovery, the combustion property of petroleum coke was researched experimentally in circulating fluidized bed (CFB) boiler. The performance of the boiler in burning mixed fuel with different ratios of coal to petroleum coke is obtained. Based on the experimental data, Factors influencing the stability of combustion,thermal efficiency of boiler, and emissions and desulphurisation are discussed. This study demonstrates that the combustion of petroleum coke in CFB boiler is applicable, and has great significance on the design and operation of CFB boiler to burn petroleum coke.

关键词： petroleum coke CFB boiler efficiency desulphurisation