Scientific Development Research

Flare systems serve as key safety facilities for handling combustible gas emissions during normal operation, start‑up/shutdown and accidents in petroleum and petrochemical plants. Their ignition stability and explosion prevention capability directly determine plant safety, personnel protection and environmental safety. Based on standards such as SH/T 3009‑2013 and GB 50160‑2018, combined with frontline engineering experience, this paper summarizes the selection, multi‑backup design and flame monitoring of ignition devices, analyzes core explosion prevention measures including hazardous area classification, flame sealing, static electricity protection and lightning protection, verifies technical effects through practical cases, and provides implementable optimization schemes for high‑sulfur, low‑temperature and offshore conditions. The results offer practical reference for safe design, operation and maintenance of flare systems.

Petroleum and petrochemical; Flare system; Ignition technology; Explosion prevention design; Multi‑backup; Special working conditions