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低硫石油焦是石油焦的一种,是石油炼化的副产品,主要通过延迟焦化工艺生产,产品广泛应用于电解铝、钢铁冶炼、新能源以及电储能等行业。在可调循环比的延迟焦化工艺流程中,可通过调节循环比、加热炉出口温度以及反应压力来控制低硫焦的收率和质量。提高低硫焦产量、优化低硫焦生产工艺,对于保障下游行业的健康发展、减少对进口的依赖具有重要意义。 相似文献
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对乌兰管道首站北疆原油进行了综合评价。结果表明,该原油密度大(867.3 kg/m3),硫含量低(0.1%),蜡含量高(11.46%),属于中质低硫高蜡原油。重整原料和汽油馏分烷烃含量较高,适宜做乙烯裂解料。煤油馏分硫含量高,柴油馏分氮含量高,均需加强精制效果。减压蜡油酸值高、黏度指数低,不适合生产高黏度指数润滑油,Cp较高(56.34%),CA低(7.69%),残炭值低(0.013%),重金属含量较小,是催化裂解的优良原料。渣油较轻,属于第二类渣油,硫含量较小(0.26%),沥青质含量较低(1.5%),是理想的催化裂化原料的掺料或焦化原料。 相似文献
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分析了石油加工过程中利用焦化装置生产的石油焦作为产品出厂,其中石油焦硫含量是判定石油焦等级的主要指标,作为分析硫含量的主要分析方法,主要介绍了库仑硫含量测定原理,以及在分析过程中从分析仪器、样品制备及分析过程控制和其他环境因素等三方面进行了影响因素分析,并对相应的处理措施进行了探讨,以确保检测数据的准确性,确保石油焦产品的顺利生产出厂。 相似文献
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1 前言 随着我国国民经济的迅速发展,对石油产品的需求日益增长,再加上我国原油渣油含量较高,原油供应又趋向紧张,致使渣油加工技术的发展显得更加重要。 渣油焦化技术是渣油深度加工,提高轻质油收率和生产石油焦的主要手段。国内外对此 相似文献
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通过对石油焦的特性研究及配煤炼焦试验,考察其对配煤黏结性能及焦炭质量的影响,研究结果表明,添加石油焦会引起煤的黏结指数下降,加入石油焦配煤炼焦会降低焦炭灰分,提高焦炭硫分,降低焦炭冷强度,提高焦炭热强度。 相似文献
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简述了煤中硫分的分布规律及硫分在成焦时的原理,指出影响焦炭硫分的主要因素。针对中煤九鑫焦化公司焦炉的实际情况,通过大量生产数据分析,应用线性回归的方法建立数学模型,根据不同的结焦时间证明配合煤和焦炭中的硫分具有线性关系,可有效地预测焦炭硫分,指导配煤,从而保证焦炭中的硫分符合客户要求。 相似文献
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M. I. Stukov V. S. Zagainov Ya. B. Kukolev N. S. Andreichikov P. V. Shtark A. V. Vishnyakov V. A. Antonova S. N. Soboleva 《Coke and Chemistry》2009,52(8):349-352
Box-coking data show the possibility of increasing the yield and strength of metallurgical coke by introducing a coking additive
in the batch. Specifically, this additive is a product of slow coking of heavy petroleum residues, characterized by excellent
thermoplastic properties: clinkering properties and plastic temperature range. A Russian patent has been obtained for the
coking additive. 相似文献
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I. I. Mel’nikov V. M. Kryachuk D. A. Mezin A. A. Gorbunov T. G. Voloshchuk 《Coke and Chemistry》2011,54(12):447-449
Given the shortage of coal with good coking properties, a petroleum coking additive is introduced in coal batch so as to expand
the range of plasticity. This additive improves coke quality in every respect, except the total sulfur content. Measures to
reduce the additive’s negative impact on the coal pitch are considered. 相似文献
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Simulated delayed coking characteristics of five petroleum residues from various sources in China and four fractions from one of the residues were investigated by thermogravimetry (TG), and interactions among the fractions were thus revealed. Results showed that properties of these petroleum residues and fractions varied over a broad range. The coke yields from residues were closely related to their carbon residues and those from the fractions varied much. Apparent thermal-cracking activity was in the order saturates > aromatics > resins > asphaltenes, while actual overall cracking intensity appeared in reverse order when measured by the heat effect derived from differential thermal analysis (DTA). The apparent cracking reactions of the fractions and their parent residue could be described in first order kinetics in two coking temperature zones with activation energies being 75–120 kJ mol− 1 and 130–210 kJ mol− 1. Saturates promoted coke formation from other fractions, while aromatics inhibited coke formation from both resins and asphaltenes; the coke yield from a residue was smaller than that by physical summation based on residue's compositional fractions. It is thus possible to inhibit coke formation and enhance liquid distillate production by delayed coking of certain mixed petroleum residues. 相似文献
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Isao Mochida Kejko Maeda Kenjiro Takeshita Noritaka Kaji Yoshio Suetsugu Takashi Yoshida 《Fuel Processing Technology》1978,1(2):103-115
The desulfurization of petroleum residues of high sulfur content was carried out using three kinds of Lewis acids under a nitrogen flow of atmospheric pressure at 150–330°C. Considerable amounts of sulfur were eliminated from the residue as hydrogen sulfide with the aid of aluminum chloride at 150°C or higher temperatures. Ferric or zinc chloride was found also to eliminate sulfur from the residue in the form of the corresponding metal sulfides at 330°C without the evolution of hydrogen sulfide.Effects of such desulfurization on the coking properties were observed by means of optical microscopy and X-ray diffraction. Although the original residues gave cokes with a mosaic arrangement of anisotropic domains, benzene-soluble fractions of the desulfurized residue gave a graphitizable needle coke. The desulfurized residues were further analyzed by chemical techniques to study the structural change brought about by acidic desulfurization. This kind of desulfurization was revealed to be carried out without decreasing the aromaticity of the residue, being different from the hydrodesulfurization with cobalt-molybdena catalysts. 相似文献
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为控制并稳定焦炭硫分,依据相关国家标准分别对15种单种煤的全硫、各种形态硫以及相应40kg焦炉所得焦炭全硫进行了测定,分析了各单种煤中硫的赋存形式及其在炼焦过程中的析出规律,并通过配合煤试验,验证了析出规律。 相似文献
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焦化装置掺炼催化裂化油浆技术经济分析 总被引:1,自引:0,他引:1
通过油浆掺炼小试, 对以加工管输原油等中间基原油为主的安庆炼厂焦化装置掺炼RFCC油浆生产中的物料平衡、产品质量、生产操作、经济效益等方面进行了分析,阐述油浆掺炼将导致焦化装置液收下降、气体及焦炭产率上升,蜡油芳烃含量上升,不利于提高装置加工量及经济效益的提高 相似文献
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以SO2为活性气体对3种不同的原始高硫石油焦进行活化形成高硫石油焦样品。采用比表面积及孔隙度分析仪、X射线光电子能谱分析和元素分析等仪器和方法研究样品的物理化学性质,在固定床实验装置上对样品的脱汞能力进行实验研究。结果表明,用SO2气体改性石油焦的过程是一个有效的载硫过程;经过SO2改性后的高硫石油焦表面负载有大量有机硫(噻吩),具有较强的脱汞能力;高硫石油焦表面的含硫量和硫形态对其吸附脱汞能力有很大影响,高硫石油焦表面的微孔结构和微观形貌也在一定程度上影响其脱汞能力;在一定温度范围内随着吸附温度的降低,改性高硫石油焦的Hg0穿透率呈下降趋势,即汞脱除性能不断增强。 相似文献