Technical requirements for the release torch ignition system

It is essential to comprehend the technical specifications of the flare ignition system. The purpose of the flare ignition system is to ignite the released gas to ensure compliance with national emission standards. The flare ignition system must possess features such as complete combustion, high temperature resistance, long lifespan, energy efficiency, and stable operation. Now, let's explore the key technical requirements of the flare ignition system.

What are the primary technical requirements for the flare ignition system?

Wind-resistant burner: Due to the low calorific value of the exhaust gas, the torch head features catalytic combustion, stabilizing the gas flame for complete burning. The combustion has a Greenman Blackness Coefficient of 1; the torch head's heat-generating section is made of stainless steel 304, which can withstand high temperatures and corrosive conditions; the remaining material is Q235B. The torch head outlet maintains combustion without extinguishing or igniting at high gas flow rates, ensuring low combustion noise. It primarily comprises a cylinder, windshield, fluid seal, high-altitude ignition companion, and connecting components.

1) Fluid Seal: Made of heat-resistant steel, it is positioned in the upper part of the torch head, with a conical cylinder that unfolds gradually to prevent tempering and stabilize the flame. By adjusting the gas flow rate and direction, it forms a stable ignition source, aiding in flame stabilization and preventing flame failure. At low flow rates, the central flame-stabilizing device keeps the flame steady at the dynamic seal's outlet, while at high flow rates, it prevents backfire through the combined action of dynamic sealing and the torch cylinder's sealing, creating a recirculation zone for stable combustible gas combustion.

2) Windshield: It draws in some air and allows the mixed gases to linger within the combustion chamber defined by the windshield, facilitating thermal incineration and stabilizing the flame against external environmental impacts.

3) Burner: Typically, each stripping pipe requires two burners, using converter gas from the storage tank as the ignition source. Their primary purpose is to promptly generate a substantial flame, which is channeled into the wind-resistant burner to ensure thorough and stable combustion of the released converter gas.

4) Connection components such as flanges and ribs serve fixation and support purposes. Flanges can be customized according to user-provided standards for on-site mating.

High-voltage ionizers, high-temperature and high-voltage insulators, and conductors, paired with each high-altitude igniter, are equipped with high-voltage ionizers to supply high-voltage power to the igniters. Plasma is produced by mixing air with converter gas; The plasma flame is emitted from the direct-fire ignition head, and from each ionizer to the igniter, systems include quartz insulators and high-voltage leads that can withstand high temperatures and voltages.

The ignition control cabinet for the flare system, managing the high-voltage generator’s 220V power signal and electric valve control signals, is controlled by its primary components, including a Siemens PLC, an isolated power driver, a signal isolation input-output device, a hard manual switch, and status indicator lights. An on-site operation box is installed and connected to the control cabinet, with operations mirroring those of the control cabinet.

The flame detector, which determines if the stripping tube gas ignites, requires a flame feedback signal and consists of a flame sensor and temperature monitoring components.

The flare ignition system is designed for initiating the ignition process of fuels and gases in boilers, steel furnaces, gas furnaces, and chemical facilities. The system employs direct combustion of gas to facilitate the combustion process.