Automation in Petro-Chemical Industry

Perforation Depth Control Method Based on Casing Hoop Automatic Tracking and Recognition Technology

2022, 58(5): 0-0.

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Development of Extraction and Purification Process Operation Training System Based on Real Time Intelligent Software Platform

2022, 58(5): 0-0.

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Based on the real-time intelligent software platform G2, the modeling, design, programming and operation scoring techniques of the intelligent simulation training system for D3 extraction and purification process were studied, and the simulation training system for D3 extraction and purification process was developed. The actual simulation results show that the changes of process parameters of the simulation system are basically consistent with the actual situation of the production process, and the operation performance of the operators can be comprehensively evaluated from three aspects of operation steps, alarm and quality, and the reasons for deduction of points are given, which shows that the system can effectively simulate the dynamic operation of the extraction and purification process, and it plays an important role in training and improving the operation skills of process operators and reducing incorrect operation.

The distributed control system(DCS) has been praticed and explored in the domestic technical transformation of cracking plant in extra-large refining and chemical enterprises

2022, 58(5): 0-0.

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The implementation process of technical transfomation of DCS in cracking plant is elaborated based on a successful case of domestic technical transformation of DCS of cracking plant in extra-large refining and chemical enterprises.The reformed DCS comprehensively improves the reliability of equipment,stability of control and ease of operation,which greatly reduces the risk in steady operation.It will provide practical experience for old plants control system to tackle key problems in the domestic technical transformation.

Research on Monitoring system of drilling pump and Winch based on Vibration Test

2022, 58(5): 0-0.

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Automatic drilling rig is an important core equipment for increasing speed and efficiency in oil and gas exploration and development, and its operating state directly affects the safety and efficiency of oil field drilling production. The traditional oil drilling rig monitoring system has some problems, such as low effective collection of real-time parameters, poor anti-interference of sensors to the environment, weak stability of data transmission and so on. In order to obtain the operating parameters of drilling pump and winch accurately, quickly and reliably, to improve the integrity of automatic drilling rig, this paper focuses on the research and design of on-line monitoring and fault diagnosis system for drilling pump and winch based on vibration testing technology. The on-line real-time monitoring and diagnosis service for the health status of drilling rig equipment is realized. Through field tests, it is proved that the system can identify whether bearing, pump valve and crosshead faults occur in drilling pump and winch, and realize quantitative and positioning diagnosis, in which the fault identification accuracy of drilling pump is about 88.7%. The accuracy of winch fault identification is about 87.5%, which is helpful to ensure the safety of oil and gas production．

Application of nonlinear analysis in periodic operation of chemical process

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It has been well recognized that the overall performance of a process can be significantly improved by forced periodic operation which could be realized through external oscillations. While a proper evaluation and quantification of process performance necessitates rigorous analysis tools. The aim of this paper is to review methodologies suitable for the analysis of periodic process operations, where theories of process intensification and stabilization by periodic operation is detailed. Through this synergistic development mathematically, properness and stabilizing criterions are provided which could be used to analyze a number of periodic operation scenarios, facilitating the implementation of novel operation-control strategies in view of unsteady state operation.

Research on the application of digital twin technology in the digital transformation of petrochemical enterprises

2022, 58(5): 0-0.

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Abstract： The construction of smart factories in refining and chemical enterprises is implementing smart factory 2.0 and starting the exploration of 3.0, which effectively accelerates the pace of digital transformation of refining and chemical enterprises. In the process of digital transformation of refining and chemical enterprises, how to realize the effective integration of the physical entity of refining and chemical equipment and the virtual model of the information world is a technical problem faced by enterprises participating in the construction of smart factories at home and abroad. Therefore, this paper introduces the basic development history, connotation and key technologies of digital twin, and analyzes the application effect and prospect of digital twin technology in refining and chemical enterprises from three aspects: device optimization and control, instrument fault monitoring and digital delivery application. The digital twin technology provides a new technical solution for the information interaction and fusion of physical entities and virtual models of refining and chemical plants, which is conducive to promoting the digital transformation of refining and chemical enterprises.

Instrument maintenance based on DCS

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Offshore oil and gas fields of process need to use a large number of transmitter, regulating valve, shutoff valves, field instruments equipment, the stability of the instrument equipment directly determine the stability of the production process, and the stability of the instrument equipment was mainly affected by two factors, on the one hand, high salt, high humidity high corrosive Marine environment, instrument equipment running in this environment for a long time, such as lead to equipment failure due to corrosion and scaling, on the other hand are influenced by the nature of the product, lead to equipment failure. This article is based on DCS (distributed control system) programming and control functions, through programming in DCS system engineer station, intelligent management system designed to create the field instruments, and PC interface display on DCS system, realize one-to-one differentiation field instruments maintenance forecasting warning function, on the other hand, combining with the on-site hardware transformation, improve the efficiency of maintenance, reduce the workload, improve the stability of field instruments.

The Discuss on Improvement and Technology Analysis of Measurement Shortage for Long-distance Natural Gas Pipeline

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Measurement shortage analysis is not only an important content of long-distance natural gas pipeline operation management, but also an important measure to reduce cost and increase efficiency. The paper expounds the definition and meaning of natural gas pipeline measurement shortage. The classification principle of natural gas pipeline measurement shortage is put forward, that is, the measurement system error and the loss caused by pipeline operation, equipment quality and corrosion. The standard deviation of the metering system and the measurement shortage caused by the change of pipeline pressure and temperature and the damage of the third party are analyzed quantitatively. From the perspective of technology and management, the paper discusses the analysis method and working mechanism of natural gas pipeline measurement shortage, including basic principles, traceability principles, analysis frequency and management system. The paper puts forward the measurement shortage positioning and early warning technology based on measurement database, hydraulic friction coefficient and simulation software tools, as well as the grid and fine management mode of measurement shortage in pipeline enterprises. The research results have guiding significance for pipeline enterprises to control the measurement shortage at a low level and ensure the safe and efficient operation of pipelines.

Discussion on Engineering Application Based on GB/T50493-2019

2022, 58(5): 0-0.

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In order to ensure personal safety and prevent accidents, it is necessary to accurately and timely monitor the combustible and toxic gases that may leak and accumulate in the production process. It is necessary to reasonably determine the engineering application principle of combustible gas and toxic gas monitoring, master the working principle and application scope of common gas detectors, master the engineering application principle of combustible gas and toxic gas detection system (GDS for short), master the design principle of regional alarm, the application examples of typical engineering occasions are given, and the opinions on common hot issues are put forward at the same time.

Comparative analysis of standard methods for determination of COD in high chlorine and low COD wastewater

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Design method for Typical Alarm in international project

pi yu

2022, 58(5): 0-0.

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Abstract: The conception of suitable alarm management is to control alarm amount and frequency in reasonable range and rationalize alarm priority. This article combines with the actual engineering practice in international project. Some typical alarm and alarm priority are provided. The typical alarms include Deviation alarms between DCS and SIS, Fault alarms, Simulation alarms, SIS alarms, control system diagnostic alarms, typical specific process and package equipment alarms, Fire and flammable and toxic gas alarms, Dynamic mode dependent alarms setting，Building alarms，Deluge system alarms. If the design of alarms and corresponding alarms priority is reasonable, the automation management level of refinery shall be greatly improved.

Discussion on safety application and management mode based on mechanical interlocking device

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Large oil and gas projects have special production targets, which are quite dangerous. Coupled with the huge production system, there are inevitably some safety risks, a large part of which comes from the operation and maintenance process and operation and maintenance personnel. In this paper, the safety production management mode based on the mechanical interlocking device were discussed, Based on the operation and maintenance of several kinds of typical safety guarding device/equipment in oil and gas industry, practical application using mechanical interlock device to standardized the operation process have been designed and implemented, which can realize the safety management goal : safe operation process configurable and safety operation results predictable, equipment safety state visible, In order to provide a new idea for the safety management of new-construction and in-operation large oil and gas construction projects.

Comparison of ignition probability selection methods in protective layer analysis

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Abstract: It is an important step to determine the ignition probability of combustible materials reasonably. Three methods of calculating value, empirical value and OGP value were analyzed. The OGP ignition probability was modified by setting boundary points, and the significance of ignition probability data was analyzed. The results show that OGP takes full account of ignition probability under different leakage scenarios and leakage rates, and does not distinguish between immediate ignition and delayed ignition, which is relatively simple in calculation and the first choice for ignition probability calculation. In the design of small stations, fire dikes, fire coating and other protective measures should be fully considered. In the design of large oil depots, sufficient number of combustible gas detection devices should be set up. Air circulation has a great influence on ignition probability. The results can provide a theoretical basis for the adjustment of process layout and improvement of process conditions.

Design of a laser diode collimator for dust concentration measurement

Yong Jiang

2022, 58(5): 0-0.

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Research and Application of Audio Fault Analysis of Pumping Unit

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Under the conditions of current oilfield production information system, the central control chamber fault monitoring, found and early means and methods of the early warning, only conduct patrol inspection by video. In response to the current status, the research and application of pumping unit fault audio and early warning technology is carried out, and form a set of pumping unit audio intelligent analysis and alarm system by using Internet of things, machine learning, big data analysis and other technologies on the basis of expert knowledge in the field. Realize continuous equipment monitoring, timely and accurately find and diagnose mechanical faults of pumping units, give early warning, prevent small faults from evolving into large faults, avoid mechanical accidents, reduce labor intensity of employees and improve equipment information management level.

Selection of On-line Gas Analyzer for FCC Unit

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Combined with a pilot FCC unit designed by the authors, the selection of on-line gas analyzer for regenerated flue gas is introduced. The contents mainly include introduction to the process flow, the process parameters of regenerated flue gas, the performance of optional gas analyzer, summary of the mature industrial gas analyzer, characteristics of laser gas analyzer, influencing factors of the laser gas analyzer, etc.

Application of UWB based Personnel Positioning in chemical plant

2022, 58(5): 0-0.

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Abstract：With the increasingly severe situation of safety and environmental protection, in order to effectively curb and reduce the occurrence of exceptionally serious accidents from the root causes and strengthen government supervision and management, the Provincial Emergency Management Bureau requires all enterprises engaged in the production, transportation and storage of hazardous chemicals to establish a "five-in-one" information management platform. The ball tank area of a company is a major source of danger of the first level, with large safety risks and high dangers. This paper expounds the principles of several mainstream positioning technologies, compares them from multiple dimensions, and finally focuses on the principles of UWB positioning technology, and makes a detailed introduction and analysis of the deployment plan and effect.

Oil and gas pipeline diagnosis and early warning technology based on multi-source data fusion

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With the transformation of oil and gas pipeline industry to digitization and intelligence, and the continuous development and maturity of data sensing technology. In recent years, various pipeline enterprises have developed management systems to meet different business needs. At the same time, they are faced with problems such as many systems, miscellaneous data and difficult decision-making. How to extract "small information" from "big data" to serve management decision-making is the difficulty and pain point of industry technology. Therefore, in order to improve data utilization and form an integrated service mode, a comprehensive solution of pipeline state diagnosis and early warning based on multi-source data fusion were proposed. Based on the data of existing UAV patrol inspection, GPS line inspection, intelligent cathodic protection and other systems, the original data alignment, effective information screening, data type unification, state feature extraction, fusion model construction and early warning level division were realized. Finally, an integrated and visualized diagnostic and early warning platform was developed to realize the management and decision-making function of dynamic factors such as third-party damage, corrosion damage, and natural geological disaster damage. Through technical exploration, the value of multi-source data was extracted, and certain technical support was provided for the construction of intelligent pipelines and intelligent pipeline networks.

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