Automation in Petro-Chemical Industry

Development and application of compressor lubricating oil simulation skid training system

2020, 56(6): 0-0.

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Staff training is the main way and effective means of human resource development.Training content and facilities are the basic construction of training system and the source power to ensure the training effect.For the operators and instrument maintainers of oil and gas primary processing units, the practical operation training of production units is a long-term technical problem that puzzles the trainers.Through investigation and interview,the training center of Daqing oil field natural gas company selected the compressor lubricating oil skid which is widely used for research and development.By using Siemens STEP7 v5.5 SP2 CN and Kingview 6.55 programming software,the dynamic picture of process simulation and control system of field process are realized. A set of mini compressor lubricating oil simulation process skid training system provides a practical operation platform for employees,and provides talents and technical support for the sustainable development of the enterprise.

Case argumentation - Analysis of the online maintenance case of Compressor shafting instrument

Shi-Heng YU

2020, 56(6): 0-0.

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As the heart of petrochemical enterprises, it is indispensable for daily online maintenance of the compressor safety instrument system. It is an essential quality for instrument maintenance personnel to understand and master the operation mechanism and interlock protection Settings of compressor instruments, so as to avoid mistakes in online maintenance and stop the unit.

Lightning surge protection engineering design for instrument and control system in petrochemical industry

2020, 56(6): 0-0.

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Engineering design for instrument system lightning surge protection in petrochemical industry is introduced such as instrument and control system surge protection basic methods, earthing and bonding system, application of surge protection device，surge protection for control system in control room and field instrument in explosion area，laying and shielding of cables and so on. Network type earthing construction is especially introduced that simplifies the complex and uncertainty of earthing construction，which solve the problems of lighting surge release and earthing function，and makes engineering construction easy. Key words: petrochemical industry, instrument and control system, surge protection engineering design, surge protection earthing system，network type earthing construction，control system surge protection, field instrument surge protection，intrinsic system surge protection，surge protection device.

Application Status and Future Development Direction of Big Data in Oil and Gas Long Distance Pipeline

2020, 56(6): 0-0.

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In recent years, big data technology has developed rapidly in China's oil and gas pipeline industry. Pipeline enterprises and relevant scholars are actively engaged in the research on innovative application of big data technology and enterprise business integration. Pipeline big data accumulated in the whole life cycle of design, construction, acceptance and operation are carried out mining analysis. Problems such as "more accumulated data, less mining information", inconsistent data standards, and business data that cannot be shared together are actively dealt with. Preliminary results have been achieved, and the pipeline business efficiency and risk control level have been improved. The current research status of big data of oil and gas long-distance pipeline such as the construction of big data platform framework, data integration during the construction and operation period of oil and gas long-distance pipeline, and the integration of big data technology and pipeline business are summarized. The gap between China and abroad through comparative analysis is founded out. The future development direction based on the current situation is put forward.

Discussion on the development trend of lightning, static and stray current ignition prevention technical standards in the United States

2020, 56(6): 0-0.

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Lightning and static protection is an important work to improve the safety level of oil and gas stations. The pipeline company shall inspect and test the lightning and static protection facilities according to the standard specifications, find and eliminate the potential safety hazards in time, and provide reliable technical guarantee for the safe operation of the oil and gas station. The representative and authoritative technical standard in the field of lightning and static protection is API RP2003-2015 Protection Against Ignition Arising Out of Static, Lighting, and Stray Current. The paper mainly reflects the technical progress of lightning and static protection in American oil industry in recent ten years, and focuses on the revision of static protection measures for the loading operation of tank cars, static protection measures for storage tanks, lightning protection measures for roof storage tanks and horizontal storage tanks. China standard Q/SY 1651 is equivalent adopting API RP2003. Through tracking the revision information of American pipeline standard, the standard technology update work is carried out for domestic standard Q/SY 1651 to improve the safety management level of China pipeline industry.

RESEARCH AND SETTING SCHEME OF ELECTROMAGNETIC FLOWMETER GROUNDING

2020, 56(6): 0-0.

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Abstract: Electromagnetic flowmeter is a kind of flow measuring instrument widely used in industry. Electromagnetic flowmeter in the design and selection, installation, use and maintenance process, there are specific requirements. Because its measuring principle is different from other flow meters, the grounding requirement is very important to the electromagnetic flowmeter. Based on the principle of the electromagnetic flowmeter, this paper puts forward the view that grounding is the prerequisite and necessary condition for the normal operation of the electromagnetic flowmeter. Combining with different types and installation occasions, introduce the grounding scheme of the electromagnetic flowmeter.

Secondary development and application based on Hook-Up module of SmartPlant Instrument

2020, 56(6): 0-0.

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This paper introduces the requirements for the compilation of the instrument installation diagram. Combined with the application of hook-up module of SPI, it analyzes the problems existing in the use of the module, puts forward a secondary development method based on the hook-up module of SPI, and applies the method in the engineering practice. Through application, it is proved that the method is reliable and effective.

The application of Burner Management System of the furnace

2020, 56(6): 0-0.

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The management and operation of furnace is crucial in petroleum chemical industry. The BMS system can effectively manage the start, trip and normal operation of the furnace. And BMS also provide safety protection for personnel health, device and environment. From the perspective of design, we discuss the requirement of furnace in start and trip period according to BMS in an abroad refinery.

Preliminary Analysis of the application of SPI in the detailed design and integrated delivery design of overseas projects and digital delivery

2020, 56(6): 0-0.

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SPI, as a mainstream automatic control engineering design software, is widely used in the engineering field around the world. With the globalization of engineering companies, competitors in the petrochemical industry come from all over the world, so domestic engineering companies are accelerating the pace of going global. In recent years, domestic engineering companies have undertaken a large number of overseas engineering projects. As an important part of integrated delivery of overseas projects, SPI has been paid more and more attention by engineering companies. This paper mainly introduces the application of SPI in the detailed design and integrated delivery design of overseas projects and digital delivery, aiming at exploring how to ensure the delivery content meets the requirements of overseas owners in the integrated delivery.

Encapsulation of predictive PI algorithm based on Siemens PLC

2020, 56(6): 0-0.

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Abstract: Because PID controller is simple in structure, easy to realize and easy to adjust parameters, PID controller has been occupying a considerable position in the field of industrial control. Although PID control technology is widely used, when the controlled object has a large delay, that is, the system delay time and time constant are greater than one time, the control effect of PID controller is not satisfactory. Therefore, this paper proposes a control strategy based on Predictive PI control algorithm under the condition that the traditional control algorithm has insufficient control effect for the process of large inertia and large delay, and uses SCL language to encapsulate the predictive PI algorithm in Siemens PLC, and the result shows that it can effectively solve the problem caused by large delay.

Discussion On Key Control and Interlock Schemes for SPENT ACID REGENERATION PLANT

2020, 56(6): 0-0.

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This paper introduces the control schemes and safety interlock schemes of the incinerator using oxygen-enriched combustion technology in the spent acid regeneration plant .The coupling relationship between air, fuel gas, spent acid and acidic gas, is specifically analyzed; the air-fuel ratio control scheme for different fuel gas components is proposed; The important safety interlocks of incinerators and the important sequence control schemes of incinerators are introduced. The above design not only improves the automation control level of the incinerator, but also ensures the safe long-term operation of the incinerator.

The Automatic Design of Nitrogen Drying Realized by DCS Sequence Control

2020, 56(6): 0-0.

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Nitrogen drying process is an important part in the technology of the PET solid-phase polycondensation. However, the PLC equipped with nitrogen dryer has many problems, such as high intensity manual patrol, low reliability, poor expansibility, and the inability of the central control room to monitor the working condition of the equipment in real time. This paper presents an automatic design scheme for PLC integration and transformation based on DCS series of HOLLiAS-MACS, and introduces the hardware, software and configuration method of sequence control program, which can realize the automatic and continuously operation, and guarantee the process quality of products.

Energy consumption test and influence factor analysis of off-site oil gathering system

Chang-Jing LIANG

2020, 56(6): 0-0.

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Magnetic float level meter based on hall switch soft band for stratified level measurement

2020, 56(6): 0-0.

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the classical magnetic float level meter far eastone mode using dry reed pipe and resistance as the sensor part, the structure of the dry reed pipe features make it carries the risk of damage in transit, and the working condition of field measurement medium is more and more complex, hierarchical level measurement requirements gradually increase, so you need to design a sensor part is not easy to damage and magnetic float level meter can measure stratification level.In view of the above requirements, ADUCM361 chip produced by ADI Company is used as the main control core in this paper. The layered liquid level measurement is carried out by hall switch soft belt composed of Hall sensor and resistance. Combined with HART chip, remote debugging can be carried out, which makes up the technical defects of the layered measurement capability of magnetic float liquid level meter in the medium condition of the separated layer.

Application and development of industrial big data for refining and chemical plant

2020, 56(6): 0-0.

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After years of information construction, Qilu Petrochemical Corp. has established a complete real-time database platform and accumulated a large number of production, processing, equipment and quality data. How to use the data value is a topic of great interest to the enterprise management. In this paper, the enterprise level big data analysis platform is established to analyze the production stability rate, equipment operation status and quality prediction by using big data technology, aiming to improve the petrochemical industry's safe production operation rate, fault early warning ability, optimization of production capacity and process control information and intelligence.

Process data filtering scheme and algorithm optimization based on WinCC

2020, 56(6): 0-0.

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The process value data collected from the industrial field is mixed with various kinds of random noise and sudden interference. To implement the industrial measurement and control project, it is necessary to solve the problem of process value data filtering, to realize the designed measurement and control function, to ensure the required control accuracy, and to use the correct control strategy. Based on WinCC client / server structure, this paper studies the related technical problems of process value data filtering, introduces the common algorithms and characteristics of data filtering, presents the implementation scheme of data filtering on WinCC platform, and discusses the optimization of data filtering algorithm on WinCC platform.

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