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Sang G.-P.,Lanpec Technologies Limited
Petrochemical Equipment | Year: 2012

The analysis was made for SA-516 high strength steel on its chemical composition and mechanical property. The presentation was made for weld preparation, control in welding process, post-weld temperature holding time, and NOT during winter period. The equipment in such process meets the requirement and quality. Source


Through finite element calculation to the different height to width aspect ratio of rectangular atmospheric vessel wall plate, the results showed that the highest stress area transfers from the bottom to both sides of wall plate and the stress of the wall plate top became smaller and became the lowest stress area with the height to width aspect ratio increasing. The saddle area of higher stress gradually extended to the bottom and sides of wall plate with the height to width aspect ratio increasing. Because higher stress area moves down on wall plate with the height to width aspect ratio increasing, reinforcing ribs of the wall plate upper middle can be reduced. Source


Zhang S.-W.,Lanpec Technologies Limited
Petrochemical Equipment | Year: 2012

The configuration, working principle, study of liquefied natural gas composition and physical properties, design of star-finned high efficiency heat transferring tubes, heat transferring analysis and calculation are shown, that can be referenced by design and production in practice. Source


Su M.,Lanpec Technologies Limited
Petrochemical Equipment | Year: 2012

A brief introduction was presented for the structure and installation and operation of plate heat exchanger. Aiming at the existing fault, the measures were put forward. Source


Zhou C.,East China University of Science and Technology | Lu X.,East China University of Science and Technology | Xin Z.,East China University of Science and Technology | Liu J.,East China University of Science and Technology | Zhang Y.,Lanpec Technologies Limited
Progress in Organic Coatings | Year: 2013

A hydrophobic benzoxazine-cured epoxy coating (EPB) was prepared by a dip coating and thermal curing method using benzoxazine monomer (B-TMOS) as curing agent. Fourier transform infrared (FTIR) analyses confirmed the presence of thermal curing reactions and hydrogen-bonding interactions in the epoxy/polybenzoxazine system. The hydrophobicity of epoxy coatings induced by the incorporation of B-TMOS was enhanced significantly, and the water contact angles of resultant EPB coatings were higher than 98. The corrosion protection ability of epoxy coatings was investigated by open-circuit potentials, potentiodynamic polarization curves and electrochemical impedance spectroscopy (EIS) methods. The results showed that the charge transfer resistance (R ct) of EPB coatings was increased by about three orders of magnitude compared with bare mild steel, and the protection efficiency values of all EPB samples were more than 98%. This increased corrosion protection property could be attributed to the high hydrophobic performance of EPB coatings. © 2013 Elsevier B.V. All rights reserved. Source

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