Automation in Petro-Chemical Industry

Discussion of High pressure pump Transducer Control in RO system

2014, 50(6): 0-0.

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Abstract: This paper introduce control requirement for RO and high pressure pump ，sketch the principle and inner important parameters. According to the characteristics for RO system and the high pressure pump performance curve , adjust inner parameters of transducer, direct starting High pressure pump, RO system is smooth running. Transducer Control High pressure pump and cancle Electronically VALVE is able to fulfill RO requirements

Automation and Instrument System Engineering Design and Construction Strategy for Modern Refinery in China

2014, 50(6): 0-0.

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Abstract：Automation and instrument intergraded system engineering experience and practice for modern refineries in China is summarized. It is pointed out that the factory internal network, control network and production data could not be open to outside and internal information shall not be issue to public for factory secrets and safety. Technical obstruction and differences will be analyzed for discussing the viewpoint and design strategy that integrate Chinese technology to complete, understand, take use of, develop since take advantage of technology from overseas. The over design and insufficient design in present engineering construction process is discussed. Practical thinking for engineering design and construction is introduced.

Application of SIL Quantitative Calculation and Evaluation Method in Basic Process Control System

2014, 50(6): 0-0.

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According to the basic method of probability, this paper led quantitative calculation and evaluation method of Safety Instrument System (SIS) and concept of average probability of failure on demand(PFDavg) into evaluation of basic process control system(BPCS), which has many kinds of control structures. According to these different characteristics of structure, this paper listed six integrated formulas of common control structures. With the expectation that induction of these methods and concepts can offer help to measure the executive capability of BPCS, and offer scientific and trustworthy foundation for design, installation, maintenance, modify and decommission of BPCS.

Discussion on the configuring solution of GDS indication and alarm device

2014, 50(6): 0-0.

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In GB50493, Four configuring schemes of indication and alarm device are provided for combustible gas and toxic gas detection and alarm system. Later Gb50116 and some other standards were published, and they gave their own rules for relevant problems. So it is necessary to study the variation in these standards, and in a petrochemical engineering, how to make a choice among these four schemes according to the characteristics of the project. In this paper, the requirements of these standards are listed on the four schemes, the principle for selection of design schemes is provided, and in the end, it is recommended that I/O cards and controllers shall be separate, the indicators and alarms can be used separately or commonly with other control system.

The study of power supply of instrument in refinery

2014, 50(6): 0-0.

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Modern oil refining process is a typical continuous production process, and instrument automatic detection and control is the guarantee for process operating continuously, smoothly and safely, and the reliable power supply of instrument is the precondition for the implementation of detection and control. Refinery instrument power supply design should follow < Design code for instrument power supply in petrochemical Industry>. But, the code terms mainly stress on principle and generality, and there will be many solutions under the same principle, so there is a problem to choose the "true", give up the "false" and select an optimal solution. In addition, the instrument power loads are various, and have different purposes, so design specification can't meet all the requirements. In practical work, different designers have different understanding and practice, and there are many arguments. In practical engineering projects, there are indeed many mistakes and insufficiency on instrument power solutions, and many accidents have occurred. The author developed a series of instrument power supply solutions through learning the design specification, consulting with colleagues, discussing with electrical professional and the design practice, which is proved reliable and reasonable. As instrument power supply is various, this article only review and summarize the industry generally concerned or controversial issues, mainly including power supply solution of CCR, power supply solution of FAR, power supply design considerations, etc., for the colleague’s reference and discussion, and experts please criticize and correct.

Design and research of real flow calibration primary standard apparatus of natural gas

2014, 50(6): 0-0.

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This paper introduces several common primary standard gas flow device internationally, then the two methods and mt law HPPP primary standards of traceability were compared, the final analysis of the primary standards uncertainty factor device, as the basis for engineering applications, the construction of national gas actual flow test station.

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Discussion and solution of PTA oxidation reactor level measurement error

2014, 50(6): 0-0.

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Abstract： Liquid level is one of the main technological parameters of chemical production, the traditional differential pressure level technology has been widely used in the production, but It is difficult to applied in the high type containers and tower. Through the background introduction, liquid level measurement system composition and heat tracing conditions introduction, the article introduces a series of level measurement error caused by the liquid level increase and the growth of the sealing liquid pipeline after PTA oxidation reactor upgrading. The causes of problems is illustrated by computation. And then, paper introduces the measuring principle, components and advantages of Rosemount 3051 s/ERS liquid level transmitter retrofit scheme. Finally illustrate the feasibility of the scheme through the application example.

Intelligent video surveillance applications in the reservoir area of security

2014, 50(6): 0-0.

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Study and application of Oilfield Station Multifunctional Monitoring Cabinet

2014, 50(6): 0-0.

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Abstract：On continuously monitoring and controlling for the single well measurement and distributing type parameters of ball collection cylinder electric heating temperature, pit level, crude oil temperature, pressure, flow, flammable gas and noxious gas etc, using RJ45/ Ethernet TCP/IP protocol and PC to make networking, and to create the fine-new conception monitoring cabinet which is researched and developed accordance with the actual requirements of realizing PC data storage, analysis, treatment, pictures dynamic display and net distribution and control, etc. It can change the past 60 sets of devoting plenty of time and energy to observe, analyze, collect and control the single parameters monitoring device, and avoid the disadvantages of complex operating procedures, low efficiency, and bad reliability of data treatment. Its wide application and stable performance provide the reliable and practical monitoring equipment for the oilfield station.

Research and implementation of process-oriented industries universal remote monitoring system

2014, 50(6): 0-0.

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With the unceasing enhancement of enterprise information degree, establishing a remote monitoring system that break through the limit of region and time becomes the inevitable trend. Using B/S mode combined the traditional C/S mode with Web technology, construct a structure of universal remote monitoring system for process-oriented industries. Under the guarantee of the normal safety production of the original control system, using SQL Server, ASP.NET, Ajax technology and utilizing the IIS service and C# language develop a remote and real-time monitoring system of the desulfurization process of Northern Huajin Thermo Electron Corporation. After the debugging and system running, it shows that the system has the advantages of safety, reliable and the good real-time data transmission. Furthermore, it greatly improves the information level of the enterprise.

Application on Measuring Instruments Management of Gas Gathering and Transportation

2014, 50(6): 0-0.

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According to the various problems of measuring instruments management,department may Introduce QR Code technology, automatically generating and printing color logo of QR Code,using it’s Characteristic that Contains a large amount of information, low cost, easy made, to add management methods and Supervision of measuring instruments, in order to improve efficiency and level of delicate work.

Analysis of Problems and Countermeasures of Framework Procurement Strategy of Instrument Material in SINOPEC

2014, 50(6): 0-0.

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Mainly Introduced the background of framework procurement strategy of SINOPEC instrumentation material. Operation mode and specific job requirements is discussed for Instrumentation materials of framework procurement in the paper. The Instrumentation device of framework procurement mode is analyzed since 2008. The existing problems and improvement measures of framework procurement jobs are analyzed.

The Applied Research of Diagnostic Analysis on Measurement of Transmission Error of Natural Gas

2014, 50(6): 0-0.

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Some understanding and insight about the status of natural gas measurement and transmission error was given, especially the shortcomings. The general methods were concluded by the concept and classification of transmission error, and the commonly used diagnostic analysis of natural gas transmission error was pertinently proposed. The transmission error was positioned by the analysis of measurement data, the trend of transmission error contrast, and daily inspection. Furthermore, the solution was obtained by inspecting the relevant equipment, valves, process etc. And it was used to solve the existing problems of transmission errors of stations, combined with the field application and the actual natural gas exploitation and transportation of production. Measurement advices were given respectively by the installation process, pipe and human factors, combining with the objective causes of gas gathering station in gas transmission error in this paper.

Application of turbine bypass valve

2014, 50(6): 0-0.

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Turbine bypass valve is the important device in steam occasion, The paper expatiates characteristic of valve cage and body. The others explained the valve how to automatic function for avoiding accident,make the plant steadily.The paper indicate how to control the valve working by the some parameters in DCS at last.

Application of a multi-parameter measurement system in the tank

2014, 50(6): 0-0.

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During the operation of equipment, the required of tank’s level, temperature, and other parameters are measured automatically raised. To solve the storage tank temperature stratification medium disparities, making the parameter measurement is not accurate enough. According technological features, combined with high-precision pressure sensor technology, the buoyancy impulse technology, capillary barrier technology, compensation technology, the design uses a multi-parameter measuring system. Depending on the application, a brief description of the system theory, equipment selection, performance measurement, installation requirements and benefits. Metering system to solve the general metering device features a single, low precision, communication difficult; application shows that the system is stable, secure, accurate, simple operation, suitable for multi-parameter, high-precision measurement and automatic tank farm monitoring.

Measurement of Eectromagnetic Flowmeter and its Application in Engineering Design Project

2014, 50(6): 0-0.

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Describes the electromagnetic flow meter for measuring principle, characteristics, application, and the application of the note. It also describes the specific case, and the engineering design choice in electromagnetic flow meter to take into account the factors and Electromagnetic flow meter installation requirements are described in detail.

The Analysis & Troubleshooting & Countermeasures of Interlocking Fault

2014, 50(6): 0-0.

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This paper introduces a pre-commissioning accident of refrigeration units, and through the analysis of the accident, the fault which caused by the grounding circuit of the DC power supply system is found out. According to the causes and field investigation, the troubleshooting method is summed up, finally in order to prevent the occurrence of this kind accident, some countermeasures are summarized.

Discuss Application Technology of Safety Instrument System From the Transformation of Aromatic Combination Plant interlock system

2014, 50(6): 0-0.

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This article discusses the importance and instrumented interlock system in aromatics combination unit problems, practical improvement upgrade program of advanced safety instrument system and technical solutions based on. Through upgrading of safety instrumented system to ensure that the aromatic combination plant interlock system stability, reliable operation.

Displacer instrument selection and commissioning in polypropylene Plant

2014, 50(6): 0-0.

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Abstract: Displacer instrument is widely used in the petrochemical, oil refining plants because of its high accuracy, reliable performance, long-term stability, and ease of use. In this paper, the relevant issues of displacer instrument selection, installation and commissioning for 200,000 tons / year polypropylene plant by example of FST3000 series displacer instrument. A detailed discussion of the water calibration method for displacer instrument commissioning, water height calculation and specific steps are provided.

Application of SPD in Pretro-chemical Plant

2014, 50(6): 0-0.

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Introducing the definition 、classification 、 main parameter of SPD& selection ；explaining the SPD setting rules in detail; installation and wiring, stating the grounding rule of SPD

Economic Analysis on Application of Foundation Fieldbus and Traditional DCS Project

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Foundation fieldbus control system technical have more widely used in petrochemical, According to the effect of the implementation point of view, Foundation fieldbus control system to simplify engineering design, reduce debugging time and ease of maintenance reflects the superiority, But there are some differences ideas in the investment economy for FF and traditional DCS project. This paper through comparative analysis of the actual project costs, investment costs reveals the contrast with the traditional DCS , provide the basis for future project decisions

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