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News Article | December 20, 2016

SHANGHAI, Dec. 20, 2016 /PRNewswire/ -- Wison Engineering Services Co. Ltd. ("Wison Engineering, or "the Company", SEHK Stock Code: 2236), one of the leading chemical engineering, procurement and construction ("EPC") management service providers in China, announced today that its non-wholly owned affiliated company, Wison Engineering Ltd., has been awarded an EPC contract for a new liquefied natural gas ("LNG") project (the PROJECT) by Astana Trans Oil LLP ("Astana Trans Oil"), which is the first LNG facility in Kazakhstan. Wison Engineering will be responsible for the turn-key services from FEED, basic and detailed engineering, procurement, construction, to commissioning, start-up, and operators training. The PROJECT is scheduled to be delivered at the end of 2018. The PROJECT is located in Zhambyl, Kazakhstan, which is one of the Sino-Kazakhstan production capacity cooperation projects. The PROJECT is of great significance to the promotion of Sino-Kazakhstan relations under "the Belt and Road" policy, enrichment of "the Silk Road Economic Belt" development as well as execution of the "Bright Path" new economic policy by the government of Republic of Kazakhstan. As one of the most competitive companies in the field of cargo transportation in Kazakhstan, Astana Trans Oil LLP has begun preparations for the first domestic LNG facility since 2014. Upon completion of the PROJECT, the local cargo transportation cost will be significantly reduced and the shortage of natural gas supply in North Kazakhstan will be effectively alleviated as well. Adhering to internationalization strategy, Wison Engineering has been actively seeking business opportunities in countries under "the Belt and Road" policy in terms of energy development. The Company has established a management system and execution team to cater to its international business operations in combination with a global procurement and construction resources network. Currently, execution of several major EPC projects in the Middle East and South America is in progress. Wison Engineering ("the Company", SEHK Stock Code: 2236) is one of the leading chemical engineering, procurement and construction ("EPC") management service providers in China. The Company specializes in serving the energy sectors including petrochemicals, coal chemicals, oil refining and fine chemicals. From technology licensing, project planning and consultation to PDP, FEED, engineering design, procurement and construction management, as well as start-up and operational services, the Company provides diversified services and one-stop solutions to clients worldwide.

Shen J.,Wison Engineering Co.
Petrochemical Equipment | Year: 2012

Over the past few decades, Allowable Stress Design (ASD) method was often used for pressure vessel design. In 2007, ASME VIII-2 Alternative Rules, Rules for Construction of Pressare Vessels provided Load and Resistance Factor Design (LRFD) method as an alternative. The fundamental concept and theory background of LRFD method were introduced, including differences between ASD and LRFD method. Finally, development trends of ASD and LRFD method were discussed.

Zhang Q.,CAS Institute of Process Engineering | Yang C.,CAS Institute of Process Engineering | Yang C.,Jiangsu Marine Resources Development Research Institute | Mao Z.-S.,CAS Institute of Process Engineering | Mu J.,Wison Engineering Ltd.
Industrial and Engineering Chemistry Research | Year: 2012

Mixing time is a key parameter relevant to the scale-up and design of agitated reactors. Although there have been many published papers on mixing times in stirred tanks predicted by computational fluid dynamics (CFD), there are few reports on the large eddy simulation (LES) based prediction of the mixing time in a gas-liquid stirred tank. In this work, an LES method based on an Eulerian-Eulerian model is presented for predicting the mixing time in a gas-liquid stirred tank agitated by a Rushton turbine. In order to verify the simulated results, mixing time experiments were carried out using a conductivity technique. In the present LES, the Smagorinsky subgrid scale model was used to model the effect of subgrid scale on the resolved scales. The concentration distributions and operating parameters such as feed positions, impeller speeds, and gas flow rates on the mixing time were examined. It is shown that the predicted concentration distributions of tracers are more irregular and realistic by using LES. Also, the mixing time decreases with the increase of impeller speed. However, with increasing gas flow rate, the mixing time first increases and then levels off. The predicted mixing time by the LES method shows good agreement with the measured values. © 2012 American Chemical Society.

Shen J.,Wison Engineering Co.
Petrochemical Equipment | Year: 2014

A new fatigue evaluation method based on structural stress was provided by ASME VIII-2 (2007 Edition). It has been proved that this method was mesh-insensitive and especially fit for fatigue life evaluation of weld toe of weldments. From the definition of structural stress, this paper deduced calculation procedure of structural stress, presented the origin of formulas in the code and pointed out the theoretical foundation of mesh-insensitivity.

Xu W.-W.,Wison Engineering Ltd
Xiandai Huagong/Modern Chemical Industry | Year: 2016

The process of the propylene refrigeration system for MTO device is introduced. The design of the key equipment, including propylene refrigeration compressor, refrigerant tank and suction tanks for propylene is also described. The design differences between different drive types of compressor process system are compared. The start and shutdown procedures of the compressor are analyzed. A type of centrifugal compressor is chosen as propylene refrigeration compressor. Its working principle, reason and influence factors causing surge are discussed. The countermeasures for anti-surge are also proposed. © 2016, China National Chemical Information Center. All right reserved.

Shen J.,Wison Engineering Co.
American Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP | Year: 2014

Coal gasification is a key technology for clean coal conversion with high efficiency. During the past decade, more than twenty Shell Key Gasification Equipments (SKGE) used in the Shell Coal Gasification Process (SCGP) have been built in coal-to-chemicals industry in China. SKGE comprise the Gasifier and Syngas cooler connected by Transfer duct. The support skirt of the Gasifier base was fixed, while the Syngas cooler side was supported by a constant hanger (floating support). Therefore the design by rule is not applicable to the strength calculation of pressure vessels of the system. In this paper, a FE model of global analysis of the largest SKGE system in China to date was established which considered thirteen loads and twenty-four load combinations. In this model, FEA software ANSYS was used to calculate the global dynamic effect of this 2000-ton system. The whole structural deformation and stress distribution, force and moment on several specified cross sections of SKGE under different load combinations are also determined within this model, which is the prerequisite and foundation for accurate calculation of each key part (e.g. connection between Transfer duct and Gas reversal chamber), and essential safety of SKGE system. Copyright © 2014 by ASME.

Shen J.,Wison Engineering Co.
Petrochemical Equipment | Year: 2010

Risk evaluation for III-type pressure vessel is an important component of the design method based on failure mode. Identification, analysis and control of the typical risks for coalchemical shift furnace during the design, manufacture and use were discussed. Effective measures are given at the as well.

Lei Z.,Beijing University of Chemical Technology | Zhang B.,Beijing University of Chemical Technology | Zhu J.,Beijing University of Chemical Technology | Gong W.,Wison Engineering Ltd. | And 2 more authors.
Chinese Journal of Chemical Engineering | Year: 2013

Solubility data of carbon dioxide (CO2) (1) in methanol (2), 1-octyl-3-methylimidazolium bis(trifluoro-methylsulfonyl)imide ([omim] +[Tf2N]-) (3), and their mixtures (w 30.2, 0.5, and 0.8) at temperatures 313.2 and 333.2 K and pressures up to 7.0 MPa were measured by a high-pressure view-cell technique. The solubility of CO2 in methanol (w30), [omim] +[Tf2N]- (w31.0) and their mixtures follows the order of (w30)<(w30.2)< (w 30.5)<(w30.8)<(w31.0) at the same temperature and pressure, while the magnitude of Henry's constants follows the reverse order at a given temperature, which is consistent with the COSMO-RS (conductor-like screening for real solvents) calculation. The solubility data of CO2 in methanol and [omim]+[Tf2N]- are correlated with the Peng-Robinson equation of state, and the solubility of CO2 in the mixtures of methanol and [omim]+[Tf 2N]- can be well predicted based on the mole fraction average of methanol and [omim]+[Tf2N]- over the solubility of CO2 in pure methanol and [omim]+[Tf 2N]-. The mixtures of methanol and [omim] +[Tf2N]- may be used as physical solvents for capturing CO2 with high partial pressures since they combine the advantages of organic solvents and ionic liquids. © 2013 Chemical Industry and Engineering Society of China (CIESC) and Chemical Industry Press (CIP).

Sui L.,Wison Engineering Ltd.
Xiandai Huagong/Modern Chemical Industry | Year: 2012

According to the overtemperature of the existing debutanizer tower kettle, the simulations of debutanizer and depentanizer are set up. Through two separate sequence of simulation, the tower kettle temperature, tower pressure and heat balance in different sequence are analyzed. Considering the actual condition of the factory, the partial C 5 product backflow is the optimal reform solution in the sequence of debutanizer prior to depentanizer.

Wison Engineering Ltd. | Date: 2015-12-02

An ethylene cracking furnace mainly comprising: a radiant section (1), a convection section (2), and TLEs (Transfer Line Exchangers) (8), wherein said radiant section (1) is provided with at least one firebox (3) with its bottom provided with a plurality of burners (9), said plurality of burners (9) comprises a first, a second, a third and a fourth rows of burners arranged in sequence and parallel with each other; said firebox (3) is provided with a first group of radiant coils and a second group of radiant coils, both said first group of radiant coils and said second group of radiant coils are arranged in two rows, such that said firebox (3) is provided with four rows of radiant tubes in total. The present invention realizes large scale cracking furnaces which take up less space and require less investment as compared with other cracking furnaces having the same dimension. Respective embodiments provided in the present invention further provide more beneficial technical effect.

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