Effect of central oxygen from low to high on single-nozzle and four-nozzle configurations
Thread Content
How do changes in central oxygen regulation in a single-nozzle gasification furnace, from low to high to excessive, affect the misting effect, as well as the length and thickness of the flame? How did it change? Adjusting the central oxygen level of a single burner with four nozzles – how does this affect the flame of that single burner, and what is the effect on all four nozzles? How does the length of the flame from a single burner with four nozzles affect the furnace wall temperature, whether it becomes higher or lower? Please, experts, explain it to me
The proportion of central oxygen is generally between 15% and 20%, but this ratio can be increased appropriately when feeding material into the gasifier, reaching up to 30% in some cases. During system operation, the range for adjusting this proportion varies depending on the characteristics of the raw coal; it is usually between 10% and 25%, provided that there is no slag blockage. The proportion of oxygen at the center affects the length and width of the flame in the gasification furnace. When this proportion is low, the flame becomes wider and shorter, and the roof of the gasification furnace is prone to overheating. When the central proportion increases, the flame is stretched out, becoming longer and thinner; as a result, the flame zone moves downward, which can lead to overheating at the bottom of the furnace. This was determined by domestic burner manufacturers and through practical operation experience. However, GE’s findings are different – they are the opposite of this. The proportion of central oxygen in the flame distribution within the gasifier is also related to the operation of the burner.