Coal Gasification (KW3M3.6)

Double-stage coal gasifier

Double-stage coal gasifier is specially designed for gasifying bituminous coal, by which light tar can be carbonized out from coal in pyrolysis section. The gas calorific value produced with this gasifier is higher than that of produced with KW1M series and it has better environmental protection performance.

Big carbonization sectional area and coal storage, slow coal bed lowering and long carbonization time. Simple structure, convenient maintainance and small investment.

Structural characteristics:
Coal feeding section: Practical and reliable coal-level detector cooperates with stoker to realize automatic coal feeding and guarantee coal gasfier is in full charge layer operation.

Pyrolysis section:

Furnace lining is insider. This structure was designed after the strict calculation of heat transfer and heat exchanger, which can improve heat transfer efficiency, so that the coal can be fried and carbonized fully and effectively in this section, as well as the volatile matter can be pyrolysised and it will mix in the gas to improve the gas calorific value. Also, it is helpful for the gasification of lower gas.

Gasifying section:

Water jacket structure is adopted and self-produced steam is used for gasification.
Coal feeding mechanism:

Advanced upper roller, middle flashboard and lower bell jar mechanism is adopted, which is characterized by simple operation, easy maintenance and good gas-tightness.

Slag collecting mechanism:

Wet slag removal from both sides is made by ratchet wheel & detent with hydraulic drive. Self-designed plough type special plate is adopted for slag removal, which is characterized by steady drive and smooth deslagging. Our plough type plate has been used in many types of domestic and imported coal gasifiers and is well received.