| Description |
This paper will explore best practices and lessons learned during the development, testing, and implementation of a mechanically atomized multi-jet liquid flare for liquified natural gas (LNG). Liquefaction facilities convert natural gas into LNG by cooling it to a liquid state at -259⁰F (- 162⁰C), which can then be safely and economically transported and exported to help satisfy global energy needs. While preparing equipment for maintenance or during emergency process upsets, the facility must safely dispose of waste fluids such as natural gas feedstock, LNG product, and refrigerants used in the liquefaction process. Typically, these facilities are equipped with flare systems designed to efficiently handle only gaseous waste streams, as liquid waste streams can result in a spray of burning chemicals that could reach the ground level and create a safety hazard. However, a customer of Zeeco requested a flaring solution to safely dispose of cryogenic LNG that would meet noise, flame stability, and radiation requirements, as well as emission regulations. Zeeco designed a pressure atomized multi-jet liquid flare system capable of handling large capacity flows. In the fall of 2019, after engineering, modeling, designing, and constructing a flare system, Zeeco engaged in full-scale testing of the system using cryogenic LNG. This paper will share the requirements, design considerations, system and modeling parameters, testing protocols, and testing results. |
