Do all gasification furnaces have water jackets?
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Do all large-scale gasifiers have water jackets? Please explain for different types of gasifiers. Thank you very much
I’ve never seen a furnace with a water jacket; we use four-nozzle water-coal slurry gasification
It is just one of the protective measures for the water jacket. There are many other measures as well, such as thermocouple alarms HA HHA, etc ； Apply high-temperature color-changing paint. . .
Most fixed-bed gas generators are equipped with water jackets; the fixed-bed furnace itself is relatively small, and the water jackets protect the furnace while also generating steam that is fed into the furnace for reaction. Fluidized bed gas generators rarely have water jackets; their furnace bodies are relatively large, and heat exchange is carried out through an external boiler.
Texaco’s multi-nozzle water-coal slurry system uses refractory materials, while the Corning powder gasifier features water-cooled walls; the internal structure of the furnaces varies
What was said on the 5th floor is correct; as far as I know, BGL has water jackets, while I’m not sure about Luchi’s model. In fluidized bed reactors, there are either water-cooled walls or refractory bricks, but no water jackets
Luchi pressurized solid slag discharge gasification technology is a water jacket； The BGL slag gasification technology features both water jackets and refractory bricks ； The first two belong to the fixed-bed gasification technology, using lump coal as the feedstock. The latter is the fluidized bed gasification technology, using coal powder as raw material (dry feeding and wet feeding); the Corin dry powder gasification technology features both refractory bricks and water jackets ； The Tsinghua furnace is a coal-water slurry gasification technology for water wall use ； Space furnaces, Shell, E-gas, GE, four-nozzle systems, multi-component slurries, and Wood furnaces are all made of refractory bricks ； And domestic technologies that have emerged subsequently for innovative development, such as the five-ring furnace and the Ningmei furnace, all adhere to the same fundamental principles. The development of circulating fluidized beds has not been satisfactory in recent years, with a very low market share, so no further details are needed.
Personally, I think using steam generated as a by-product of a gas generator is a backwards approach