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Beijing, China

Shen J.,Wison Engineering Ltd.
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.

Shen J.,Wison Engineering Ltd.
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.

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.

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.

Shen J.,Wison Engineering Ltd.
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.

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