How much oxygen is required to gasify one ton of coal in a Lurgi furnace?
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Does any expert know how to use a Lurgi furnace for the gasification of lignite? How much oxygen and how much steam is required to gasify one ton of coal? And what impact does the steam-to-oxygen ratio have on the quality of the generated gas? Thank you for your help!
Brief reply: According to the data provided by Shanxi Tianji Coal Chemical Group, the oxygen consumption per ton of ammonia is 480 m3; in actual production, this figure rises to 540 m3 due to the high ash content in the raw coal. Based on an oxygen consumption of 480 m3 per ton of ammonia, the specific oxygen consumption is approximately 220 Nm3/1000 Nm3 (CO+H2). Among the pressurized gasification processes that are currently in industrial use, the Lurgi furnace has the lowest oxygen consumption.
The oxygen consumption should also vary depending on the quality of the coal; coals with higher activity require lower temperatures and less oxygen consumption, while those with lower activity require higher temperatures and more oxygen consumption
At present, what is the maximum size of Lurgi reactors, and what is their scale?
MARK-Ⅴ gasifier: the gas production capacity per unit is 100,000–140,000 Nm3/h
Ruchi Generation III furnace, with an inner diameter of 3800 mm and a height of 12500 mm. It is the Lurgi furnace type most widely used in China at present.
How to check for leaks in the upper valve after coal is added to a Luchi furnace coal lock? How to operate it?
1. Confirm by conducting floating experiments during the stamping process. 2. Listen on-site to check for any sound of air escaping from the valve area. 3. With the valve closed, pour a certain amount of water into the gap between the valve and its seat to see if bubbles form (this is mainly used to detect any minor leaks when working on the valve area).
The Lurgi furnace is used for gasifying lignite; the amount of oxygen required to gasify one ton of coal depends on the quality of the coal. The general oxygen consumption should also be different, right? The better the activity, the lower the temperature requirements and the less oxygen consumption; conversely, the higher they are. It can also be determined by the level of fixed carbon content; generally, the higher the fixed carbon, the greater the oxygen consumption. The steam consumption is related to the ash fusion point; generally, at the same load, the higher the ash fusion point, the lower the steam consumption. The oxygen-to-gas ratio affects the quality of the gas produced; generally, as long as slugging is avoided, a lower oxygen-to-gas ratio increases the yields of CO and H2.
The amount of oxygen consumption varies depending on the composition of the coal, and it cannot be generalized.