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Wang S.,Lanzhou LS Energy Equipment Engineering Institute Co. | Li C.-L.,Lanzhou LS Energy Equipment Engineering Institute Co. | Zhang Y.-X.,Lanpec Technologies Limited
Petrochemical Equipment | Year: 2015

The plates of a heat exchange equipment in coal ammonia process occurred leakage. Through the chemical analysis, scanning electron microscopy and energy dispersive spectrometer, the reasons of the corrosion have been analyzed, and the corresponding recommendations are put forward. © 2015, Lanzhou Petroleum Machinery Research Institute. All rights reserved.


Fang J.,Lanzhou LS Energy Equipment Engineering Institute Co. | Li Y.-H.,Lanzhou LS Energy Equipment Engineering Institute Co. | Sun X.-L.,Lanzhou LS Energy Equipment Engineering Institute Co. | Zhao Y.-W.,Lanzhou LS Energy Equipment Engineering Institute Co. | Wu L.-Q.,Lanzhou LS Energy Equipment Engineering Institute Co.
Petrochemical Equipment | Year: 2015

Diaphragm seals heat exchangers as a new high temperature, and high pressure heat exchangers are flexible, easy accessibility, low investment, short manufacturing cycle compared to the traditional structure. Diaphragm seals, the internal pressure is forced sealing, withstand the force generated by the gland with large bolts, from to seal plate and pipe welding tank to achieve the ends of the seal, the seal is been mandatory. Housing end flange assembly, high-end portion of the threaded hole verticality precision machining is required higher, tube plate heavier, may be formed the dislocation phenomenon between bolt holes and threaded holes down. © 2015, Lanzhou Petroleum Machinery Research Institute. All rights reserved.

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