Automation in Petro-Chemical Industry

Application of Internet of Things Technology in Digital Oilfield

2015, 51(1): 0-0.

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Oilfield Internet of Things (IoT) is the application of sensor technology, wireless communication technology in oilfield manufacturing process. Digital oilfield construction through data fusion technology, visualization technology and cloud computing technology can’t be realized without strong support of IoT, these two are interwovenness. Based on current situation of domestic digital oilfield construction, the application of IoT in digital oilfield is reviewed. Real-time data of oilfield manufacturing process and link objects is acquired through utilization of various kinds of sensors. The data is transmitted to control center by wired or wireless modes. After the acquired data through sensors is processed at control center, the detection object is under real time feedback and control according to the analysis result. With further development of oilfield exploration, the digital oilfield will be pushed to the direction of more intelligent development. The IoT has more wide development space.

The Control Essentials and Design in The Steam Turbine System

2015, 51(1): 0-0.

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In petrochemical and thermoelectric plant, the steam turbine has been very widely used, the control system application is also very mature, but there are still many problems in the operation and control, the main problem contain DEH system, drainage system design and control method of steam bleeding system, should be in the design for the initial requirements of steam turbine manufacturer information is put forward for further design and optimization, and puts forward Suggestions on instrument selection according to actual situation. This article has summarized the arrangement the auto-control essentials of the steam turbine system, and give some suggestions for control method and design, in order to improve the stability of steam turbine operation, prolong the service of life period.

Preliminary Discussion of Instrumentation Design Management in the Intergraph SmartPlant Enterprise

2015, 51(1): 0-0.

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This paper describes the use of Intergraph whole life cycle enterprise solution “SmartPlant Enterprise”, for instrument design management innovation and improvement in project design period. So that in the past through the preparation of management documents and " oral teaching that inspires true understanding within" experience inheritance, changes to processes, visualization, standardization workflow operating procedures. To promote the overall design efficiency, quality and project management, save manpower resource consumption, enhance core competitiveness and achieve sustainable development for engineering corporation.

The Control Scheme Design of Submersible Pump for Underground Oil Storage in Rock Caverns

2015, 51(1): 0-0.

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Submersible pumps are the key equipments in the underground rock caverns, which displacement is great, head is high, power is huge, and price is expensive. But the projects of national large-scale underground rock caverns are in the fledging period, the service experiences and the cognitions of submersible pumps are very few. Researching in submersible pumps of Huangdao underground rock caverns project, proceeding in the constructions and pipe arrangements of them, the control schemes of remote start-up, remote close and items result to safety shutdown have been summed up, which can be used to optimize designing and improve the automatic level of underground rock cavern projects, which can also be used to guide operators operating and maintaining the Submersible pumps.

Methanol Distillation Predictive Controller Design Based on SVM

2015, 51(1): 0-0.

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This article take t the packing type tri-columns for methanol production as a background, has designed one kind based on the support vector model forecast controller .In the solution methyl alcohol selective evaporation control meets system complex, non-linearity high, mechanism modeling error major problem, carries on the simulation through the Matlab software, finally indicated this method control progress is high, has the very good resistance to interference, has certain project significance.

Application of CEMS in Acrylonitrile Plant’s Wastewater Incinerator

2015, 51(1): 0-0.

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As the Continuous Emission Monitoring System gets more widely used in the chemical industry, combined with examples of a Continuous Emission Monitoring System in Acrylonitrile plant's wastewater incinerator, introduce the formations and configurations of the system from the engineering design's perspective.

The reasearch to Intelligent monitor system of gas well in Sulige gas field

2015, 51(1): 0-0.

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By combining the geology of gas reservoir, dynamic production, forming the production mode of flow control, pressure control, time sequence control, casing pressure and flow compound control. Through integrating the using of gas well electronic inspection, gas well Dynamic analysis technology, gas well remote control technology, gas well remote foam drainage technology and other automation and information technology, the intelligent monitoring system of gas well achieves producting by setted model and parameters, effectively improve the producing degree of reserves and development effect. Through the research of intelligent gas monitoring system, realizing digital production management, delicating gas well management, programing management, better to overcome the existing problems in the gas field management, improving the gas well production management level, realizing the scientific and effective production management for Sulige gas field with low permeability.

Application of Nonlinear State Space Predictive Control Technique in the Polypropylene Plant

2015, 51(1): 0-0.

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To resolve process bottlenecks and the controlling complexity of Spheripol-II polypropylene dual-loop reactor plant, the polymerization dynamic models have been established based on the kinetics of polymerization, material balance and energy balance; a kind of nonlinear advanced control strategy based on state space model is applied, while the controller is robust. An advanced process control system is developed composed by a down-level DCS control layer and an up-level advanced control layer. Depending on the DCS safety logic switching protection method, the control system can be started or stopped flexibly, which ensure the dual-loop reactor control safety. This technology has been successfully applied in the polypropylene unit of domestic enterprise. The results show the fluctuation of the key process parameters such as reaction temperature and density of dual-loop reactor is decreased. Meanwhile, the closed-loop control of product quality index of melt flow rate (MFR) and others is realized, the product quality has been stabilized and improved, and the standard deviation of key process parameters of dual-loop reactor has been decreased more than 25 percent after running advanced process controller.

The application of wireless steam-flow acquisition system in oil storage companies

2015, 51(1): 0-0.

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Sinochem Xingzhong petroleum transport company, equipped with the new steam flow meter, using wireless transmission technology to establish steam-flow acquisition and design software of the PC energy management, which can monitor running state of the steam pipe network and conduct statistical analysis to form reports. The system has stable operation and reliable data transmission, which provides real-time and reliable data support for company’s energy management. The system benefits the control of steam use and promotes energy-saving and consumption-decreasing.

Design of Monitoring System for Oilfield Sewage Treatment

2015, 51(1): 0-0.

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As the old oil fields in the increase of water content in the development process，the current oilfield sewage treatment has become an urgent problem．According to the characteristics of oilfield sewage treatment process and design a set of oilfield sewage treatment monitoring system based on industrial control software，the sewage treatment process important parameters were monitored，and some important dosing part in the research of control method，improve the quality of sewage treatment and achieved satisfactory results．

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2015, 51(1): 0-0.

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Technology Application of Dynamometer Card in Chang Qing Oilfield

2015, 51(1): 0-0.

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Design of Online Web Monitoring Platform for Vapor Recovery Unit in Bulk Gasoline Terminals

2015, 51(1): 0-0.

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Recently air pollution is increasingly serious in our country. In 2007, GB20950 ( Emission standard of air polluntant for bulk gasoline terminals ) was proposed by SEPA (State Environmental Protection Administration) to reduce the gasoline vapor emissions in the bulk gasoline terminals. According to this standard, vapor recovery unit should be installed in every bulk gasoline terminal before the deadline. In order to monitor these units remotely in an intergrated platform, an online web monitor platform was designed based on OPC technology, C/S structure, B/S structure, etc. Actual test shows that this platform is characterized by Good compatibility, strong real timeliness and good reliability

Development and Application of DC Control Power-saving Rotating T-valve

2015, 51(1): 0-0.

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Abstract: Due to shortcomings of pull-type alternating current electromagnetic T-valve used for double-volume separator single well calculation, such as loud starting and running noise, large power consumption, frequent burn out of control coil of the solenoid valve, small valve diameter, long time of oil discharge, great crude oil leakage, and inaccurate calculation, a newtype, national initiative DC control power- saving rotating T-valve is developed. This paper presents design basis, structural features, working principle and saving principle, laboratory tests and field applications of this valve.

Oil and gas concentration detecting of floating roof tank seal based on wireless technology

2015, 51(1): 0-0.

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Abstract: In the floating roof tank fire accident, a high concentration of combustible gases in the first and second sealing is one of the important reasons that cause lightning fire. This paper discuss concentration detecting of floating roof tank seal.to use wireless network technology for combustible gas monitoring program to monitoring the gas in the floating roof tank first and second sealing, Solve the floating roof tank sealing layer gas monitoring problems, and provide a reference for the floating roof tank production safety.

Online measurement technology on the weight yields of the key components in an industrial ethylene cracking furnace

2015, 51(1): 0-0.

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Analysis and Improvement of the Control Valve Swings

2015, 51(1): 0-0.

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Annual output of 600ktons of methanol plant, high pressure steam to the medium pressure steam and decompression valve opening midway through the trip will happen swings, steam pipe network instability and thus influence the turbine operation. After continuously trying to grope and in-depth analysis, find the root cause of the problem and the corresponding design modification, finally solved the problem, has realized the full valve stroke, full-time space and stable operation.This paper describes in detail the whole process of analysis and solve the problem.

Application of new type of γ rays level gauge in coke tower

2015, 51(1): 0-0.

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Coke tower is the key equipment of delayed coking plant, if coke formation height control is not appropriate，may lead to safety accident and unnecessary plant shutdown, So it is very necessary to set the material level meter. Coke drum level measurement has experienced from scratch, estimated from temperature measurements to the tower wall, neutron level meter, and then to γ rays level gauge process. This paper introduces a new type of γ-ray level gauge on the application of the coke tower, discusses the basic principles and advantages of the configuration.γ-ray level gauge in Wuhan Petrochemical two sets of coking tower good actual use effect, real time guidance and optimizing the process operation，to ensure the safe and stable operation of the coke tower, improves the processing capacity, and reduce the use of de foaming agent.

Application of IOT transmitter and AI dispatching system in oil pipeline network

2015, 51(1): 0-0.

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This paper expounds the transmitter and AI (Artificial Intelligence) based on IOT(Internet Of Things) dispatching system used in the method of pipeline network. The transmitter is adopted in the method for independent research and development of IOT transmitter, with built-in identification system, also has the data storage, data acquisition, control function. Transfer of AI system according to the pipe network pressure, oil pump, oil tank level state data, intelligent open pump, so as to ensure the stable pressure, oil tank liquid level control of pipeline network. At the same time, the system has high and low limit alarm liquid level of oil tank, oil pump, oil pipe network pressure load limit alarm limit alarm and other functions. The method greatly reduces the artificial cost, reduce the storage tank over flow tank and pipeline risk due to overpressure caused by the detonation tube. The method has been applied in the Xinjiang Oil field Company, the effect is good, get the user's consistent high praise.

Discussion on redundancy allocation scheme for DCS systems

2015, 51(1): 0-0.

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The DCS system has been widely used in the chemical enterprises and oil refining enterprises. If any part of the system goes out of action, it is likely to cause shut-down of the unit which will bring the company serious consequences. Thus, in order to get a more stable, more safe, and more reliable system, redundancy design is usually used in the key devices of the DCS system. Combined with the actual operation of our DCS system, this article mainly analyzes the failure of I/O module and finds the defects of redundancy configuration. Accordingly, we made upgrading for the hardware configuration, programmed software configuration, and eliminated hidden dangers. From the perspective of safety and economy, we made the improvement to ensure the stable production of our company.

Application of the automatic loading system in the reservoir

2015, 51(1): 0-0.

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Introduced automatic loading system in the reservoir a, summed up after the successful application of the Auto-loading system of economic benefit and social benefit.

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