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Characterization and analysis of petrochemical wastewater through particle size distribution, biodegradability, and chemical composition

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Chinese Journal of Chemical Engineering 2019年第2期27卷 444-451页

作者： Xiaoqiang Jia Dayao Jin Chen Li Wenyu Lu Department of Biochemical Engineering School of Chemical Engineering and Technology Tianjin University Key Laboratory of Systems Bioengineering Tianjin University Synthetic Biology Platform Collaborative Innovation Center of Chemical Science and Engineering(Tianjin)

The centralized treatment method is a widely used form of wastewater treatment that tends to be less effective at removing toxic substances. Therefore, a detailed analysis of the composition of wastewater can provide important information for the design of an effective wastewater treatment process. The objective of this paper was to investigate particle size distribution(PSD), biodegradability, and the chemical composition of the petrochemical wastewater discharges. For this purpose, this project selected the petrochemical wastewater and treated wastewater of China National Offshore Oil Corporation Zhongjie petrochemical Co, Ltd. as the analysis *** step-by-step filtration method, along with a molecular weight classification method, was selected to build the chemical oxygen demand(COD) and biochemical oxygen demand(BOD) fingerprints of petrochemical wastewater and treated wastewater. The results showed that the main pollutants were settleable particles in petrochemical wastewater, which contributed to over 54.85% of the total COD. The colloidal particles with particle sizes in the range of 450–1000 nm had the highest COD value in the treated wastewater, which contributed34.17% of the total COD of treated wastewater. The results of the BOD analysis showed that the soluble fractions were the main reason that treated wastewaters did not meet the treatment standards. Tests on the organic compounds in petrochemical wastewater found that there were mainly linear paraffins, branched paraffins, benzene series compounds, and some plasticizers in the influent of the petrochemical wastewater. The most abundant pollutants in treated petrochemical wastewater were the adjacent diisobutyl phthalate and the linear *** transform infrared(FTIR) transmission spectroscopy analysis showed that the settleable particles of petrochemical wastewater and membrane bioreactor(MBR)-treated wastewater contained multiple types of organic substances. The results also indicated

关键词： petrochemical wastewater Gradient membrane separation Chemical oxygen demand Biochemical oxygen demand

A heuristic approach for petrochemical plant layout considering steam pipeline length

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Chinese Journal of Chemical Engineering 2016年第8期24卷 1032-1037页

作者： Yan Wu Yufei Wang Xiao Feng State Key Laboratory of Heavy Oil Processing China University of Petroleum

Plant layout design affects both investment and performance of a factory. To maximize the economic benefits of a petrochemical factory, a large number of factors must be considered simultaneously, such as material flow, heat flow and safety. However, conventional principles for plant layout design and optimization do not involve the heat flow, resulting in higher construction investment. To solve this problem, a new heuristic approach is proposed in this paper based on the current layout design principles. Both material flow(pipelines for process streams) and heat flow(pipelines for steam) are considered. Three optimization methods with different objective functions are used to optimize the layout. The application of proposed approach is illustrated with a case study. The optimal scheme and pipeline networks can be obtained, and the pipeline length is reduced significantly.

关键词： petrochemical plant layout Heuristic Steam system Pipeline length Optimization

Recovery of vanadium and molybdenum from spent petrochemical catalyst by microwave-assisted leaching

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International Journal of Minerals,Metallurgy and Materials 2019年第1期26卷 33-40页

作者： Zhi-yuan Ma Yong Liu Ji-kui Zhou Mu-dan Liu Zhen-zhen Liu Guangdong Institute of Resources Comprehensive Utilization Guangdong Academy of Sciences State Key Laboratory of Separation and Comprehensive Utilization of Rare Metals Guangdong Provincial Key Laboratory of Development and Comprehensive Utilization of Mineral Resources

The study of the leaching of vanadium(V) and molybdenum(Mo) from spent petrochemical catalysts in sodium hydroxide(NaO H) medium was performed using two approaches, namely, conventional leaching and microwave-assisted leaching methods. The influence of microwave power, leaching time, leaching temperature, and NaOH concentration on the leaching efficiency of spent petrochemical catalyst was investigated. Under microwave-assisted conditions(600 W, 10 min, 90°C, 2.0 mol·L^(-1) NaOH, and 0.20 g·mL^(-1) solid–liquid ratio), the leaching efficiencies of V and Mo reached 94.35% and 96.23%, respectively. It has been confirmed that microwave energy has considerable potential to enhance the efficiency of the leaching process and reduce the leaching time. It is suggested that the enhancement of the leaching efficiencies of V and Mo can be attributed to the existence of a thermal gradient between solid and liquid and the generation of cracks on the mineral surface.

关键词： microwave spent petrochemical catalyst vanadium molybdenum

Evaluation of Powdered Activated Carbon Treatment Process in petrochemical Wastewater Purification

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China Petroleum Processing & petrochemical Technology 2018年第4期20卷 67-74页

作者： Zhang Chao Yang Lin Sang Junqiang Li Bengao Liu Tao Central Research Institute of China Chemical Science and Technology Beijing 100083 SINOPEC Research Institute of Petroleum Processing Beijing 100083 CNOOC Environmental Consultation Centre Beijing 100012

The powdered activated carbon treatment(PACT) process has been widely used in many industrial fields, however,very few PACT processes are built for petrochemical wastewater treatment in China. An industrial PACT unit launched in a petrochemical plant was introduced and evaluated from both the practice and mechanism study. Practically, the PACT process showed excellent capability in pollutants removal, shock resistance, toxicity tolerance, and the COD and ammoniumN in effluent of PACT unit assisted by PAC was equal to 15.5 mg/L and 0.7 mg/L lower than that without PAC addition,respectively. The wet oxidation regeneration unit was quite efficient in supplying regenerated PAC, and, however, the hard calcium sulphate scale and the high pollutant concentration solution needed to be carefully controlled. Moreover, although the carbon balance showed that the adsorption capability of regenerated PAC was negligible, the biological tests proved that the regenerated PAC increased microbe activity up to 17% more than pure activated sludge system, which was almost compatible with the fresh activated carbon.

关键词： powdered activated carbon treatment petrochemical wastewater adsorption microbe activity

Smart Manufacturing for the Oil Refining and petrochemical Industry

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Engineering 2017年第2期3卷 179-182页

作者： Zhihong Yuan Weizhong Qin Jinsong Zhao Departrnent of Chemical Engineering Tsinghua University Beijing 100084 China China Petroleum and Chemical Corporation Jiujiang Company Jiujiang 332004 China

Smart manufacturing will transform the oil refining and petrochemical sector into a connected, information-driven environment. Using real-time and high-value support systems, smart manufacturing enables a coor-dinated and performance-oriented manufacturing enterprise that responds quickly to customer demandsand minimizes energy and material usage, while radically improving sustainability, productivity, innovation,and economic competitiveness. In this paper, several examples of the application of so-called ＂smart manu-facturing＂ for the petrochemical sector are demonstrated, such as the fault detection of a catalytic crackingunit driven by big data, advanced optimization for the planning and scheduling of oil refinery sites, andmore. Key scientific factors and challenges for the further smart manufacturing of chemical and petrochem-ical orocesses are identified.

关键词： Smart manufacturing petrochemical Data-/information-driven environment

The Crystallization Process in petrochemical Industry

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China Petroleum Processing & petrochemical Technology 2021年第2期23卷 1-10页

作者： Zhang Dejiang Fan Yingqi Xie Li Ding Huidian Wang Hao SINOPEC Research Institute of Petroleum Processing Beijing 100083

Crystallization is a widely used product refining *** the characteristics of the crystallization process in the petrochemical industry is helpful to selecting and designing new crystallization *** review briefly introduces the characteristics of the crystallization process,summarizes the crystallization processes applied in petrochemical industry,and discusses some points for crystallization process *** in the petrochemical process is mainly used in the purification of polymer monomers and is often a unit operation in the whole refining *** a reasonable crystallization process requires consideration of process safety,feasibility,and economy from an overall perspective.

关键词： crystallization petrochemical process design purification monomer

Intelligent Transformation and Upgrading of Oil Refining & petrochemical Industries in China:Investigation & Application

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China Petroleum Processing & petrochemical Technology 2019年第2期21卷 1-9页

作者： Wu Qing CNOOC Oil & petrochemicals Co. Ltd

The oil refining and petrochemical industry in China has made great achievements after decades of development, and its capacity has already ranked second in the world. However, the refining industry is suffering some challenges, such as severe overcapacity at present, and has entered a new economic normal, in which the technological progress develops rapidly, the demand for green and low-carbon development is stricter, the market competition is increasingly fiercer and the profit margins are gradually narrowing. In such a situation, informatization and its new technologies are driving the significant reforming of manufacturing patterns, marketing patterns, management and decision-making patterns. Intelligent development is the inevitable choice for the transformation and upgrading of oil refining and petrochemical industry. It is suggested that the intelligent evaluating model and method should be adopted to enterprise’s intelligentializing transformation and upgrading by laying a solid foundation of digital refinery and implemenation of digital upgrading.

关键词： plant oil oil refining and petrochemical enterprise intelligent informatization diagnoses model intelligentializing transformation and upgrading digital refinery intelligent refinery smart refinery

Development of welding technique for petrochemical industry in China

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China Welding 1994年第2期3卷 131-137页

作者： LI Qinglin (Sino-petrochemical Corporation, Beijing (100029)ZHOU Zhende and CHEN Ke (Sinopec Yanshan petrochemical Company, Beijing)ZHEN Guorui and ZHANG Youchuan (The Third Construction Company of Sinopec, Beijing)

The characteristics of petro-chemical industry production process are high-temperature, high-pressure, inflammability, explosiveness, deep cooling and corrosion. The engineering construction of petro-chemical industry requires the welding technologies to have multi-technology, high quality and strict control for multi-steel and alloy variety. This paper discusses the key equipment, the welding technologies of special materials, the technical methods and the corresponding soft technical control and other achievements in petro-chemical engineering construction, and reveals its present situation and the aims of development.

关键词： petrochemical welding

Analysis of corrosion failure of petrochemical pipe elbow

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Journal of Central South University 2005年第S2期12卷 119-123页

作者：李晓延吕涛 Beijing 100022 Beijing 102617 Beijing Institute of petrochemical Technology Beijing University of Technology China School of Materials Science and Engineering School of Mechanical Engineering

Corrosive failure is frequently found in petrochemical pipelines which may lead to the leakage of the pipes and even the shutdown of the system. However, the corrosion mechanism is still not well understood due to the complex service environment, e.g. the corrosive fluids and the long term operation at higher temperature. The corrosion behaviour of a petrochemical pipe elbow was evaluated via visual examination and microanalysis with optical microscope and scanning electron microscope(SEM) together with energy dispersive analysis X-ray(EDAX). The corresponding corrosion mechanisms, the combination of grain boundary attach and the crevice attach together with the flow-accelerated corrosion, were proposed consequently.

关键词： corrosion pipe petrochemical