关键词: 常压储罐, 挥发性有机物, 密闭收集系统, 安全, 措施

Abstract: Taking the oil and gas recovery facility in the atmospheric tank farm of a coal chemical plant as an example, this paper calculates the pipe diameter of VOCs collection pipe network accurately to ensure the safety and reliability of VOCs collection pipe network system; the operating pressure of each atmospheric storage tank is increased as much as possible; nitrogen seal system is set; and anti-detonation flame arrester and instrument cut-off valve is set near the connecting line of each tank to ensure the safety and reliability of the tank; a regulating valve with a positioner and a solenoid valve is set at the boundary of the branch line of the VOCs closed collection system flowing into the main inlet line of the blower and safe and reliable instrument interlocking system is set to ensure the safety and reliability of VOCs collection network branch line; frequency conversion motor is adopted to drive the blower of VOCs closed collection system and the on-line oxygen analyzer and nitrogen supplement line are set at the inlet main line of the blower to ensure the safety and reliability of the inlet main line of the blower; the online oxygen analyzer and emergency shut-off valve are set on the main line at the outlet of the blower to ensure the safety and reliability of the main line at the outlet of the blower.

Key words: atmospheric storage tank, volatile organic compounds/ VOCs, closed collection system, safety, measures