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Theoretical research and application of petrochemical Cyber-physical Systems

Jiming WANG

《工程管理前沿（英文）》 2017年第4卷第3期页码 242-255 doi: 10.15302/J-FEM-2017053

摘要： A petrochemical smart factory is a green, efficient, safe and sustainable modern factory that combines cutting-edge information and communication technology with petrochemical advanced technology and equipment. A Cyber-physical System (CPS) is the infrastructure of a petrochemical smart factory. Based on the future challenges of the petrochemical industry, this paper proposes the definition, connotation and framework of a petrochemical CPS and constructs a CPS system at the enterprise, unit and field levels, respectively. Furthermore, the paper provides theoretical support and implementation reference of a CPS in the petrochemical industry and other industries by investigating the construction practice of a multi-level CPS in the China Petrochemical Corporation (SINOPEC).

关键词： Cyber-physical System (CPS) petrochemical industry smart factory

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Enterprise-wide optimization of integrated planning and scheduling for refinery-petrochemical complex

《化学科学与工程前沿（英文）》 2023年第17卷第10期页码 1516-1532 doi: 10.1007/s11705-022-2283-7

摘要： This paper focuses on the integrated problem of long-term planning and short-term scheduling in a large-scale refinery-petrochemical complex, and considers the overall manufacturing process from the upstream refinery to the downstream petrochemical site. Different time scales are incorporated from the planning and scheduling subproblems. At the end of each discrete time period, additional constraints are imposed to ensure material balance between different time scales. Discrete time representation is applied to the planning subproblem, while continuous time is applied to the scheduling of ethylene cracking and polymerization processes in the petrochemical site. An enterprise-wide mathematical model is formulated through mixed integer nonlinear programming. To solve the problem efficiently, a heuristic algorithm combined with a convolutional neural network (CNN), is proposed. Binary variables are used as the CNN input, leading to the integration of a data-driven approach and classical optimization by which a heuristic algorithm is established. The results do not only illustrate the detailed operations in a refinery and petrochemical complex under planning and scheduling, but also confirm the high efficiency of the proposed algorithm for solving large-scale problems.

关键词： planning scheduling refinery-petrochemical convolutional neural network heuristic algorithm

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DE based economic control chart design and application for a typical petrochemical process

Zhi LI, Feng QIAN, Wenli DU, Weimin ZHONG

《工程管理前沿（英文）》 2017年第4卷第3期页码 348-356 doi: 10.15302/J-FEM-2017043

摘要： Petrochemical industry plays an important role in the development of the national economy. Purified terephthalic acid (PTA) is one of the most important intermediate raw materials in the petrochemical and chemical fiber industries. PTA production has two parts: -xylene (PX) oxidation process and crude terephthalic acid (CTA) hydropurification process. The CTA hydropurification process is used to reduce impurities, such as 4-carboxybenzaldehyde, which is produced by a side reaction in the PX oxidation process and is harmful to the polyester industry. From the safety and economic viewpoints, monitoring this process is necessary. Four main faults of this process are analyzed in this study. The common process monitoring methods always use and SPE statistic as control limits. However, the traditional methods do not fully consider the economic viewpoint. In this study, a new economic control chart design method based on the differential evolution (DE) algorithm is developed. The DE algorithm transforms the economic control chart design problem to an optimization problem and is an excellent solution to such problem. Case studies of the main faults of the hydropurification process indicate that the proposed method can achieve minimum profit loss. This method is useful in economic control chart design and can provide guidance for the petrochemical industry.

关键词： petrochemical PTA economic control chart design process monitoring DE algorithm

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A Study of the Functional Mechanism of Petrochemical Engineering Construction Project Management

Ji-ming Wang

《工程管理前沿（英文）》 2014年第1卷第2期页码 129-139 doi: 10.15302/J-FEM-2014020

摘要： This paper, proceeding from the project construction process, the management mode and the implementation way, makes an in-depth study of the environmental characteristics and the managerial elements of petrochemical engineering construction project, revealing the inherent laws, establishing a theoretical model, and proposing a theory of the mechanisms of construction project management; and presents profound revelations found for construction project management in petrochemical engineering in seven aspects, which can play a guiding role in improving the managerial performance of petrochemical construction project. The theory established proposes that: The construction project management in petrochemical engineering is a complex systematic process, formed of 5 phases and 55 sub-processes of management, and exposed to many factors of influence; the environmental characteristics and managerial elements exercise positive impacts on managerial performance, but different factors have different impacts and act in different ways on managerial performance; the managerial elements of petrochemical engineering construction project are tiered, transferable, systematic and quantifiable, and the role of managerial elements in the managerial performance can be systematically integrated, quantitatively explained and transferred in a multi-level way.

关键词： petrochemical engineering construction project project management functional mechanism

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Studies of ultrasound disintegration of residual sludge and its energy consumption in water treatment of petrochemical

SHEN Jinfeng, YIN Xuan, GU Heping, Lv Xiaoping

《化学科学与工程前沿（英文）》 2007年第1卷第4期页码 395-398 doi: 10.1007/s11705-007-0072-y

摘要： To investigate the influence of ultrasound pretreatment on sludge anaerobic digestion, the ultrasound disintegration of residual sludge in water treatment of petrochemical plant was studied, and the mechanisms of ultrasound and medium were introduced. Experimental results indicate that ultrasound cavitation induces the rise of sludge temperature, which improves ultrasound disintegration on sludge. U1trasound pretreatment can advance observably the quantity of chemical oxygen demand in sludge supernatant fluid (SCOD), which increases with ultrasound intensity and sonication time. The degree of ultrasound disintegration increases with the specific energy input. When the specific energy input is l0 000 kJ/kg of total dry solids, the degree of ultrasonic sludge disintegration reaches 40%.

关键词： specific supernatant petrochemical ultrasound intensity temperature

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发展中的中国石化技术

袁晴棠

《中国工程科学》 2003年第5卷第12期页码 43-47

摘要：

在概述中国石化工业现状的基础上，介绍了近年来中国石化技术的进展情况，并就新世纪初期中国石化技术的发展做了展望。

关键词：石油化工技术发展中国

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Nitrobenzene contamination of groundwater in a petrochemical industry site

Yongsheng Zhao, Lin Lin, Mei Hong

《环境科学与工程前沿（英文）》 2019年第13卷第2期 doi: 10.1007/s11783-019-1107-6

摘要：

The contaminant transport distance is predicted using numerical model.

Zero-valent iron can be used to effectively transform nitrobenzene to aniline.

Experiment shows that two-layer PRB systems have a very good treatment effect.

关键词： Nitrobenzene Benzene Groundwater Zero-valent iron Permeable reactive barrier

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Development and challenges of planning and scheduling for petroleum and petrochemical production

Fupei LI, Minglei YANG, Wenli DU, Xin DAI

《工程管理前沿（英文）》 2020年第7卷第3期页码 373-383 doi: 10.1007/s42524-020-0123-3

摘要： Production planning and scheduling are becoming the core of production management, which support the decision of a petrochemical company. The optimization of production planning and scheduling is attempted by every refinery because it gains additional profit and stabilizes the daily production. The optimization problem considered in industry and academic research is of different levels of realism and complexity, thus increasing the gap. Operation research with mathematical programming is a conventional approach used to address the planning and scheduling problem. Additionally, modeling the processes, objectives, and constraints and developing the optimization algorithms are significant for industry and research. This paper introduces the perspective of production planning and scheduling from the development viewpoint.

关键词： planning and scheduling optimization modeling

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IoT sensor-based BIM system for smart safety barriers of hazardous energy in petrochemical construction

《工程管理前沿（英文）》 2022年第9卷第1期页码 1-15 doi: 10.1007/s42524-021-0160-6

摘要： The accidental release of hazardous energy is one of the causes of construction site accidents. This risk is considerably increased during petrochemical plant construction because the project itself is complex in terms of process, equipment, and environment. In addition, a general construction safety barrier hardly isolates and controls site hazardous energy effectively. Thus, this study proposes an Internet of Things (IoT) sensor-based building information modeling (BIM) system, which can be regarded as a new smart barrier design method for hazardous energy in petrochemical construction. In this system, BIM is used to support the identification of on-site hazardous energy, whereas IoT is used to collect the location of on-site personnel in real time. A hazardous energy isolation rule is defined to enable the system to generate a smart barrier on the web terminal window, thereby ensuring the safety of on-site person. This system has been applied to a large-scale construction project in Sinopec for one year and accumulated substantial practical data, which supported the idea about the application of sensor and BIM technology in construction. The related effects of the system on hazardous energy management are also presented in this work.

关键词： IoT BIM smart safety barrier hazardous energy management petrochemical construction

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Carbon dioxide sequestration in petrochemical industries with the aim of reduction in greenhouse gas

Maryam Takht Ravanchi, Saeed Sahebdelfar, Farnaz Tahriri Zangeneh

《化学科学与工程前沿（英文）》 2011年第5卷第2期页码 173-178 doi: 10.1007/s11705-010-0562-1

摘要： The mitigation of greenhouse gas emissions to acceptable levels is arguably the greatest environmental challenge these days. Vast utilization of fossil fuels and forest destruction are main causes of CO increase in the atmosphere. Carbon dioxide sequestration that consists of separation, transportation and utilization or storage of CO , is one way for reduction of its emission, in which the most costly section is separation. Different methods can be used for carbon dioxide separation such as absorption, membrane separation, adsorption and cryogenic distillation. Economic, technical and environmental issues should be considered in selection of the technology for particular application. Carbon dioxide concentration, temperature, pressure and flow rate are influential operating parameters in the selection of the appropriate separation method. Nowadays, absorption is the worldwide industrial separation method. New researches are focused on developing new stable solvents and efficient column configuration with suitable internals to minimize pressure drop. Membrane separation and adsorption (PSA type) are other long-term alternatives that can increase separation efficiency and decrease separation cost. The level of energy consumption in various separation methods are in the order: chemical absorption>physical absorption>membrane separation. Because of high investment costs, current separation technologies are suitable for large concentrated sources. In the present paper, different processes for carbon dioxide separation are investigated and compared. Available technologies and commercial plants for CO sequestration are provided.

关键词： carbon dioxide greenhouse effect separation membrane absorption adsorption

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Development and application of an off-site maintenance system in the petrochemical industry

Ruisheng YONG, Yanbing YE, Hanbin LUO, Lieyun DING

《工程管理前沿（英文）》 2017年第4卷第2期页码 111-126 doi: 10.15302/J-FEM-2017027

摘要： On-site maintenance (ONSM) is critical to ensuring the safety of equipment in the petrochemical industry. However, many accidents occur during ONSM processes because of unstable equipment, complicated work environment, and human error. To reduce congestion and exposure to hazards during on-site operations and thereby reduce the probability of accidents, off-site maintenance (OFSM) is proposed based on Energy Release Theory (ERT). The information requirements for OFSM are analyzed. A support system for OFSM, which makes use of visualization, information management, and localization capabilities, is developed. A case study utilizing OFSM and its support system for an oil-loading facility of a petrochemical company is conducted. The application results indicated that implementation of OFSM system can significantly reduce the operation risks and can improve the operation efficiency.

关键词： on-site maintenance petrochemical industry safety off-site maintenance system

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发展中的燕山石化公司

《中国工程科学》 2000年第2卷第1期页码 92-92

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石化企业信息技术的应用与对策

王立行,袁晴棠

《中国工程科学》 2000年第2卷第5期页码 84-89

摘要：

介绍了国外石化企业信息技术应用概况，着重介绍了先进控制及优化技术的主要功能和技术要点，针对国内石化企业的差距提出了发展对策。

关键词：石化企业信息技术应用对策

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石化工业的发展与催化技术

曹湘洪

《中国工程科学》 1999年第1卷第3期页码 11-15

摘要：

催化技术是石化工业发展的技术基础，本文用燕山石化公司技术进步的实例及发展中面临的问题，论述了催化技术的发展对推动石化企业技术进步的作用；同时石化工业也对催化技术的发展提出了一系列新课题：老装置的技术改造要求开发更多高性能的催化剂；清洁生产工艺要求开发环境友好催化剂；调整产品结构要求催化剂有良好的适应性；节能降耗、降低成本、增强产品竞争力要求不断降低催化剂的生产成本和改进催化剂寿命、转化率、选择性等性能。

关键词：石化工业催化技术

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炼油和石化行业的智能制造

袁志宏, 覃伟中, 赵劲松

《工程（英文）》 2017年第3卷第2期页码 179-182 doi: 10.1016/J.ENG.2017.02.012

摘要：

智能制造将把炼油及石化行业转化成为一个相互关联的、信息驱动的行业链。通过应用实时和高位值支持系统，智能制造能够实现协调运作、绩效导向的制造企业，该企业可迅速回应客户需求，并且将能源和材料的消耗最小化。同时，智能制造还能从根本上改善企业的可持续发展能力、生产力、创新力和经济竞争力。本文展示了石化行业内称为“智能制造”的几个应用案例，如由大数据驱动的催化裂化装置故障检测、对炼油厂现场的规划和调度进行优化等。智能制造在化工和石化领域进一步发展中的关键科技因素和挑战已经明确。

关键词：智能制造石油化工数据/ 信息驱动环境