entrainedflowgasifierare

An entrained flow gasifier is a type of gasification reactor where finely pulverized solid fuel is injected along with a gasifying agent, typically steam or oxygen, into a high-temperature reaction zone. The fuel particles are so small that they remain suspended in the gas flow throughout the process. This high degree of mixing and the high temperatures, often exceeding 1200 degrees Celsius, lead to very rapid and almost complete conversion of the fuel into syngas. Syngas, primarily composed of carbon monoxide and hydrogen, is a valuable synthesis gas used for producing electricity, chemicals, and liquid fuels.

The key characteristic of entrained flow gasifiers is the short residence time of the fuel particles within the reactor. This is achieved by maintaining a high gas velocity and a relatively small reactor volume. The entrainment of the fuel particles prevents them from agglomerating or forming ash deposits, which can be a challenge in other gasifier types. This makes entrained flow gasifiers well-suited for processing fuels with low ash fusion temperatures. Due to the high temperatures and the use of oxygen, entrained flow gasification typically produces a syngas with low methane content. The design often involves a refractory-lined chamber where the combustion and gasification reactions occur simultaneously or in rapid succession. The syngas produced is then cooled and cleaned before further use.