The Experts below are selected from a list of 57 Experts worldwide ranked by ideXlab platform

Sinopec Luoyang - One of the best experts on this subject based on the ideXlab platform.

  • The Application of Energy-Saving Technology in Refineries
    2010
    Co-Authors: Sinopec Luoyang
    Abstract:

    Compared with global leaders,Chinese refineries are generally energy intensive.As of December 2008,Sinopec′s overall cumulative energy consumption was 63.78kg of oil equivalent per ton of feedstock.Sinopec′s subsidiary Yanshan Petrochemical Company witnessed an energy consumption decline of 10.01kg of oil equivalent per ton of feedstock.Sinopec Hainan Refining and Chemical Company′s energy consumption dropped by 7.03kg of oil equivalent per ton of feedstock,Sinopec Guangzhou Company′s energy consumption dropped by 5.29kg of oil equivalent and Sinopec Jinling Company′s energy consumption dropped by 4.49kg of oil equivalent per ton of feedstock.Sinopec Luoyang Company′s overall energy consumption was 67.39kg of oil equivalent per ton of feedstock,higher than Sinopec′s average of 3.61kg of oil equivalent per ton of feedstock.The measures taken by Sinopec Maoming Company to reduce energy consumption included optimizing the heating and temperature maintenance for oil tanks and Steam Tracing for pipelines,using low-temperature heat source as the Tracing heat source and to maintain temperature for tank areas,reducing Steam consumption,raising the Steam supply pressure for the medium-pressure Steam system,ensuring the high efficiency of medium-pressure Steam turbines and strengthening the construction and application of energy saving facilities.The energy saving measures taken by Sinopec Gaoqiao Company included conducting technical upgrades,optimizing processes,reducing the use of Steam in processes,optimizing units′ Steam production,and increasing the outgoing supply of Steam.Sinopec Qilu Company′s energy saving measures included utilizing the low-temperature residual heat from the CFB boiler of the delayed coking unit and using twin-tower sour water stripping unit to save water and reduce discharges.This article proposes a multi-pronged approach to effectively reduce the energy consumption of Sinopec Luoyang Company in refining,including optimizing operation,applying new technology,conducting technical upgrade,updating equipment and innovating in management.

  • Energy Efficiency Analysis for Luoyang Petrochemical's FCC Unit after Revamping and Energy Conservation Measures
    2009
    Co-Authors: Sinopec Luoyang
    Abstract:

    In May 2008,SINOPEC Luoyang Company conducted a technical upgrade on its No.2 FCC unit using the Flexible Dual-riser Fluid Catalytic Cracking(FDFCC) technology.Due to the characteristics of FDFCC technology,except burned coke and deoxygenized water,consumption of electricity,Steam,hot feed,hot discharge and circulating water all increased.From June to September 2008,the average overall energy consumption of the unit was 84.73kg of oil equivalent per ton of products produced,much higher than the designed level of 67kg of oil equivalent.By installing external catalyst cooler,introducing flue gas turbine power generation,raising pressure by 3.5MPa to reduce consumption in the vapor-liquid booster,ensuring the stable operation of converter motor,strengthening heat integration and reducing 1.0MPa Steam consumption,SINOPEC Luoyang Company reduced the overall energy consumption of its No.2 FCC unit to 62.07kg of oil equivalent per ton of products in October 2008.Technicians at the company also proposed a series of measures to improve energy efficiency for the unit including reducing the yield of coke produced,realizing power generation by flue gas turbines,optimizing solvent regeneration operations,substituting hot water Tracing for Steam Tracing and timely repairing insulation layers.

Xu Lin-yun - One of the best experts on this subject based on the ideXlab platform.

  • REVIEW ON PERFORMANCE OPTIMIZATION TECHNOLOGIES OF HEAT Tracing SYSTEMS AND EXTERNAL HEAT Tracing PIPE SYSTEMS
    Natural Gas Industry, 2007
    Co-Authors: Xu Lin-yun
    Abstract:

    Heat Tracing is a method to prohibit formation of natural gas hydrates and oil-gas wax deposition as well as to realize viscosity reduction for storage and transportation of fluid materials.The essence of this technology is to control material temperature via thermal compensation provided by external thermal sources,i.e.,Tracing mediums.Application of the heat Tracing technology in natural gas industry was briefly introduced,and the performance optimization technologies of heat Tracing systems and external Tracing pipe systems were appraised in accordance with its global development situation.The technical characteristics of several heat Tracing systems were compared and analyzed in terms of heat Tracing medium and structure,like Steam Tracing system and electric Tracing system,etc.It's concluded that although Steam and hot water resources are easy to access and have been widely used,heat Tracing systems with plain external Tracing pipe have the disadvantages of high heat transfer resistant and control inconvenience.The performance optimization technologies were further analyzed in terms of heat transfer optimization and control optimization.The optimization effect was discussed.The result showed that performance of external heat Tracing systems can be enhanced through application of thermal cement and intelligent temperature control unit.It also showed energy conservation potential.Based on the above results,it is predicted that Steam Tracing system with external Tracing pipe will be one of the main Tracing systems to be long used in oil and gas fields and petrochemical industry in the future.

J. Turner - One of the best experts on this subject based on the ideXlab platform.

  • Panel discussion on electrical heat Tracing
    199 IEEE Power Engineering Society Summer Meeting. Conference Proceedings (Cat. No.99CH36364), 1999
    Co-Authors: C. Sandberg, P.r. Baen, V. Rowe, J. Turner
    Abstract:

    Electrical heat Tracing has matured in the last 30 years to be the preferred method of both freeze protection and process temperature maintenance. In most applications. The IEEE has provided guidance for the design and installation of heat Tracing through recommended practices and standards such as those sanctioned by the IEEE Power Engineering Society (PES) and IEEE Industry Applications Society (IAS). Changes in product, design, control and monitoring, and approvals all have impacted the evolution of the engineering topic of electrical heat Tracing. In this panel discussion we highlight the available standards and recommended practices with a focus on power generation processes. Hopper heating, instrument heating and special applications are also discussed. The IEC standards being modeled by the CEC (Canadian Electrical Code) and NEC (USA National Electrical Code), with acceptance of the Zone classification system give the designer more opportunity to optimize the heat Tracing system. The NESC (National Electrical Safety Code) also plays a part in the power generation side of the equation. Economic analyses of comparisons of Steam Tracing and electrical Tracing as well as advancements in monitoring and control add another dimension to the situation.

D.l. Bradford - One of the best experts on this subject based on the ideXlab platform.

  • Heat Tracing: Steam or electric?
    Chemical Engineering Progress, 1995
    Co-Authors: J.t. Lonsdale, N.j. Little, D.l. Bradford
    Abstract:

    Heat Tracing is used to prevent pipes from cooling to ambient temperature when they are in the no-flow condition. This is usually accomplished by placing a source of heat on the pipe under thermal insulation. Preventing pipes containing water from freezing and preventing fuel oil pipes from dropping below the pour point of the fuel oil are two common applications for heat Tracing. The two most common methods of heat Tracing are Steam Tracing and electric Tracing. In the 1960s, over 90% of industrial heat Tracing was Steam Tracing. Today, the market share of electric Tracing has increased to over 30% due to advances in electric Tracing technology and increases in energy costs. Choosing the proper heat-Tracing system requires an understanding of the strengths and weaknesses of the available systems and a method of estimating their relative installed and operating costs. This article provides some basic information about Steam Tracing and electric Tracing, and presents some simple decision rules for choosing the most economic system for most types of chemical process industries (CPI) applications.

Zhang Jie-ji - One of the best experts on this subject based on the ideXlab platform.

  • Application of Steam Tracing in Petrochemical Pipeline Design
    Contemporary Chemical Industry, 2014
    Co-Authors: Zhang Jie-ji
    Abstract:

    Pipelines in many petrochemical enterprises at present all need heat Tracing and thermal insulation. In heat Tracing pipes,a considerable number of oil pipelines use Steam Tracing. In this paper,the Steam Tracing of the petrochemical pipelines was introduced,the design calculation and construction method of the Steam Tracing engineering were studied. Three heat Tracing ways including internal heat Tracing,external heat Tracing and jacketed heat Tracing were analyzed and summarized,which had practical significance for design and construction of petrochemical pipelines.