Gas Flare Stack Process

Bachelor Thesis from the year 2017 in the subject Engineering - Chemical Engineering, Koya University, language: English, abstract: Gas flaring is a combustion device to burn associated, unwanted or excess gases and liquids released during normal or unplanned over-pressuring operation in many industrial processes, such as oil-gas extraction, refineries, chemical plants, coal industry and landfills. This paper provides an overview of the gas flaring in industry, concentrated on its composition, relevant environmental and health impacts, process conditions, preferable ignition systems, cost factors of flares (such as height, diameter, flame length, horizontal distance to nearest tower, wind velocity, gas temperature, civil and erection costs). Also, the effect of wind velocity, gas temperature, flare height, gas Mach number, on the process and equipment design specifications are studied with the connection of inspection and maintenance to ensure worker and process safety. Flare studies also evaluate a variety of components to determine if they are appropriate for a build or upgrade. Configurations of relief valves, hydraulic flare header systems, and real-time monitoring equipment are analyzed and simulated using standard and software-based tools to determine the best configurations for efficient relief loads and flare capacities. In addition to efficiency, flare studies also take into account safety analyses, ensuring, when appropriate, flame arrestors and control valves are in place to prevent over pressurization and equipment damage.