What is entrained flow gasification?
In entrained-flow gasifiers, fine coal feed and the oxidant (air or oxygen) and/or steam are fed co-currently to the gasifier. This results in the oxidant and steam surrounding or entraining the coal particles as they flow through the gasifier in a dense cloud.
What are the two types of entrained flow gasifiers?
Entrained-flow gasifiers are of two types, top-fed and side-fed depending on how and where the fuel is injected into the reactor. Section 8.4 discusses some of these types. In all of these designs, oxygen enters the reactor and reacts rapidly with the volatiles and char in exothermic reactions.
What is an entrained flow reactor?
The entrained flow reactor is used for fundamental combustion investigations of solid fuels under exactly defined conditions. This is reached through electric heating elements, which can heat the combustion tube to up to 1600 °C.
What is biomass gasification?
Biomass gasification is a mature technology pathway that uses a controlled process involving heat, steam, and oxygen to convert biomass to hydrogen and other products, without combustion.
What is fluidized bed gasifier?
A fluidized bed gasifier is a technology that converts carbon-containing biosolids into syngas. The gasifier introduces biosolids to an oxygen-deprived environment and controlled temperature. In this case, air is the fluidized medium. The air is preheated with natural gas and, as it flows through sand, it bubbles.
What are the three main type of gasifiers?
6.1. Based on the gas–solid contacting mode, gasifiers are broadly divided into three principal types (Table 6.1): (1) fixed or moving bed, (2) fluidized bed, and (3) entrained flow.
What is gasification of waste?
Gasification is a unique process that transforms a carbon-based material, such as MSW or biomass, into other forms of energy without actually burning it. Instead, gasification converts the solid and liquid waste materials into a gas through a chemical reaction.