Petro-chemical Equipment Technology ›› 2020, Vol. 41 ›› Issue (4): 37-42.doi: 10.3969/j.issn.1006-8805.2020.04.008

• CORROSION AND PROTECTION • Previous Articles     Next Articles

Corrosion Statistics and Cause Analysis of Typical Heat Exchange Equipment in Refining Units

Wang Ning1, Sun Liang2, Hou Yanhong2, Duan Yongfeng1, Yu Fengchang1   

  1. 1. SINOPEC Engineering Group Luoyang R & D Center of Technologies, Luoyang, Henan, 471003;
    2. CNOOC Huizhou Petrochemicals Company Limited, Huizhou, Guangdong, 516086
  • Received:2020-02-24 Accepted:2020-06-25 Online:2020-07-13 Published:2020-07-13

Abstract: Heat exchanger device is the most widely used equipment in refining and chemical enterprises. The problem of corrosion leakage is the main hidden danger that troubles the long-term safe operation of oil refining units. Based on the corrosion cases of the exchanger in a refinery during one operation cycle and overhaul period, the exchanger corrosion was statistically analyzed from the aspects of corrosion types, corrosion locations and corrosion causes. And an in-depth study was conducted on the causes of corrosion and the main factors leading to corrosion. The anti-corrosion measures for heat exchange equipment were optimized from such aspects as material selection, manufacturing, operation control, and circulating water management. These provide useful reference for the corrosion protection of heat exchange equipment in refining and chemical enterprises.

Key words: refining unit, heat exchange equipment, circulating water, corrosion