Gasification, coal gasifier types

The common feature of coal gasification processes is that coal is contacted in a gasifier with an oxj en-containing gas and steam at a temperature of at least 700UC. The main types of gasifiers are ... 

The numerous coal gasification systems available today can be reasonably classified as one of three basic types a) moving-bed, b) fluidized-bed, and c) entrained-bed. All three of these types utilize steam, and either air or oxygen to partially oxidize coal into a gas product. The moving-bed gasifiers produce a low temperature (425 to 650°C 800 to 1,200°F) gas containing... 

Gasifier Type Coal Feed Ash Handling Gasification Technology... 

Industrially, coal gasification processes are differentiated by the type of reaction system used to gasify the coal such as 1) fixed bed, 2) fluidized bed, 3) entrained bed, and 4) molten salt. The processes utilizing these reactor configurations are shown in Table 2.13 the typical gas distributions from some common systems shown in Table 2.14 [5,37],... 

The coal-fueled fluidized bed gasifier types nearing demonstration and commercialization, and their applications, are characterized in Table 1. These represent both operating facilities and projects in design or construction. The three types of gasification are represented partial oxidation, carbonization, and... 

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