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    • 58. 发明公开
    • Flare stack combustion method and apparatus with determination of minimum stoichiometric oxygen requirements
    • 确定最小化学计量氧需求的火炬烟道燃烧方法和设备
    • EP2256410A3
    • 2015-01-21
    • EP10177306.7
    • 2005-12-02
    • Saudi Arabian Oil Company
    • Mashhour, Mazen, M.Khan, Rashid
    • F23D14/46F23J15/00F23G7/08F23L17/16
    • F23G7/08F23L17/16
    • High-pressure air is discharged in the form of jets moving at a high velocity from nozzles mounted on a ring around the interior of the flare stack, placed at a predetermined distance from the flare tip and the portion of the surrounding stack wall downstream of the jets is perforated with air passages to admit atmospheric air. The high-velocity air movement induces a larger volume of air from the atmosphere to enter the stack where it rises to the flame zone, thereby lifting the flame and enhancing turbulent mixing of air and gas in the flame zone. Adequate stoichiometric amounts of oxygen to assure complete combustion are determined by measuring any variations of the mass flow rate of the fuel gas and/or undesired chemical and effecting a corresponding adjustment of an air flow control valve to admit a predetermined amount of pressurized air and/or atmospheric air to the flaring tip. A Coanda-effect body is positioned proximate the open end of the flare stack to improve the mixing of the air feedstream with atmospheric air and combustible components and to elevate the heat of the flame above the metal structural elements that control air flow at the top of the flare stack.
    • 高压空气以高速运动的喷射形式从围绕火炬烟囱内部的安装在环上的喷嘴排出,并放置在距火炬头和周围烟囱下游部分周围预定距离处 喷气孔用空气通道穿孔以接纳大气。 高速空气运动从大气中引入更大量的空气进入烟囱,从而升至火焰区,从而提升火焰并增强火焰区中空气和气体的湍流混合。 通过测量燃料气体和/或不需要的化学物质的质量流率的任何变化并且实现空气流量控制阀的相应调节以确定预定量的加压空气和/或气体流量来确定足以确保完全燃烧的化学计量的氧气量, 或大气到扩口尖端。 柯恩达效应体位于火炬烟囱的开口端附近,以改善空气馈送流与大气和可燃成分的混合,并且提高火焰的热量,从而控制金属结构元件上方的火焰热量, 火炬堆栈。