关键词: 液体硫磺, 密闭, 定量, 自动, 装车, 联锁, 液硫池, 氧含量

Abstract:

In response to the problems of inaccurate measurement and environmental pollution caused by the overflow of sulfur containing waste gas in traditional liquid sulfur loading, SINOPEC Jinan Company has carried out technical transformation of the liquid sulfur loading system, adopting the “quantitative+sealed+recycled” loading process. By setting a mass flow meter and shut-off valve at the bottom of the liquid sulfur tank to form a quantitative loading control interlock, the system has a quantitative loading function and improves loading efficiency. The deviation of loading volume is reduced to about 0.3%. The Roots blower installed on the top of the liquid sulfur storage tank stabilizes the pressure of the liquid sulfur storage tank and tank between-0.6 kPa and-0.8 kPa, ensuring that the exhaust gas during the loading process of liquid sulfur does not leak out. At the same time, the blower can hermetically seal all the exhaust gas and send it to the liquid sulfur pool and hydrogenation reactor of the sulfur recovery unit for treatment. The modified tank car mouth effectively reduces the intake of air, and the impact of low oxygen content waste gas entering the sulfur hydrogenation reactor on the bed temperature rise is less than 10 ℃. The hydrogenation reactor can operate within a reasonable range. In addition, improvement measures such as adding connecting lines between the liquid sulfur tank and the liquid sulfur pool, adding spring shaped heat tracing coils to metal hoses, and maintaining laying pipelines in the horizontal section of the waste gas recovery process with a slope of no less than 2% can ensure stable operation of the system.

Key words: liquid sulfur, airtight, quantitative, automatic, loading, interlocking, liquid sulfur pool, oxygen content