What exactly is a torch?

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1. What exactly is a torch? In petrochemical plants, one can always see a “chimney” emitting flames. This “chimney” emits flammable gases, which are burned as soon as they exit the chimney. That’s why people call it a “torch,” or more precisely, a “safety torch.” Everyone in the petrochemical industry knows that the \"torch\" is an important safety and environmental protection facility in refining and chemical processing plants, and it burns flammable gases similar to natural gas. When a torch burns, combustible gases that cannot be recycled are burned at high temperatures, turning into carbon dioxide and water vapor; this minimizes pollution risks and ensures production safety as well as air quality. 2. Are there any hazards from the emissions from torch combustion? As we all know, oil is a flammable substance. The petrochemical products derived from it, whether they are end products, by-products, or intermediate products, are for the most part flammable as well; releasing them directly into the air has an adverse effect on the air quality. Therefore, for materials that cannot be recycled, we need to gather them and burn them to prevent impacts on air quality. The torch was created to fulfill this mission. Before a petrochemical plant is completed and put into operation, a commissioning trial run is carried out, during which materials that cannot be recovered or defective products are generated. Only after the trial run is successful is the input of materials balanced out; once all this is done, can the various units in the plant operate smoothly and enter the normal production phase. As the various production units are in the commissioning phase, a large amount of combustible gases (hydrocarbons) are burned completely through \"flares.\" The products of this combustion are carbon dioxide and water vapor, which are the same as those produced when a gas stove at home is turned on; this approach is in compliance with **regulations and industry standards. 3. Why does the torch get bigger and smaller? Is it burning continuously? At the top of the “Torch” tower, there is usually only a small, pale red flame floating there, but sometimes it suddenly turns into a “blazing fire”. Those who do not know the truth must ask, “Why was this done?” ” Normally, the torch is hardly burning at all. At the beginning of operation in petrochemical plants or at the end of major maintenance campaigns, flares are often ignited; this is normal and controllable, and it indicates that the plant’s facilities are ready for operation or are already in use. The torch does not burn continuously; when the system is operating smoothly, no combustion takes place. Combustion only occurs when there are fluctuations or abnormalities in production, and what is seen normally is just a steady flame (a small flame). 4. Can the torch release combustible gases directly without burning? It won’t. At the top of a torch, there are several eternal flames, and on the ground, there is a flame-transfer system used to light the torch. Once flammable gas arrives, it will be ignited immediately and not released directly. 5. Why is the flare burning intensely during startup and material feeding? The petrochemical project has started operations with material feeding; it is currently in a unstable commissioning phase. High levels of flare emissions and combustion volume are normal phenomena, and the situation will improve once the entire production process is operational and running stably. 6. Can the torch step down from the stage of history? At present, the flare systems in refining and petrochemical plants both domestically and internationally cannot be eliminated, because in the event of large fluctuations or accidents, it is still necessary to burn off the combustible gases that cannot be recovered through these systems. The flare tower remains an essential safety and environmental protection barrier in petrochemical plants.