Thread Content
Gasifier: The gasifier is circular in shape and serves as a key component of coal gasification systems; it consists of a combustion chamber and a quenching chamber. The combustion chamber is a steel container lined with refractory material, equipped with a process burner at the top and a quenching chamber at the lower conical end. The refractory bricks inside the furnace are divided into three separate sections: the vault, the cylinder, and the cone, allowing for partial replacement. High-temperature thermocouples are installed on both the furnace wall and the furnace chamber to guide and monitor the operation of the gasification furnace. The upper part of the quenching chamber is the combustion chamber, while the lower part is the slag breaker. Its internal components mainly include a quenching ring, downcomer, upcomer, and separation baffle. The quenching ring is installed at the upper part of the downcomer, connected to the support plate via flanges, and welded to the downcomer. After entering the annular flow channel of the quenching ring, the quenching water is distributed evenly through openings in different directions within the ring. It then enters the inner side of the quenching ring via openings in these side walls, and flows downward evenly along the gap between the quenching ring and the downcomer. This creates a water film flow that moves vertically downward or in a spiral pattern across the surface of the downcomer, thereby preventing high-temperature gases from damaging the downcomer and providing protection for it. Oxygen and water-coal slurry passing through the process burner are rapidly atomized and burned in the combustion chamber, resulting in the formation of gas composed mainly of CO and H2. After being cooled by water and cleaned of dust through a water bath, this gas, along with the vaporized water vapor it contains, exits the gasifier from the cooling chamber.