How to eliminate low-frequency vibrations in incinerators?
Thread Content
Recently, the processing capacity of the unit has been quite high; by calculating the load based on the sulfur yield, it turns out that this capacity is about 10% above the designed level. The performance of other equipment and operating conditions can be kept under control, but significant low-frequency vibrations have occurred in the furnace head section. I was wondering if anyone has encountered a similar situation? How did you handle it? We adjusted the ratio of the first and second stages of airflow here, but the actual results were not satisfactory. . . . . . . . @ylb913
There is a noticeable \"buzzing\" sound coming from the incinerator; the main concern is that this could be harmful to the equipment over time, especially since there’s also a high-pressure steam boiler at the back!
The issue that can probably be resolved is the vibration of the burner. I’m not sure what the oxygen content in your exhaust gases is; a level as low as 3% should not pose any problem. Based on this, the gas pressure can be reduced, and then the air pressure as well.
Yu Gong, the oxygen level here is kept at around 1.5–2% below the specified limit, and the gas volume is also lower than the designed value!
Our unit has also encountered similar situations to yours before; reducing the air supply volume was the solution
The air volume has decreased, while emissions have increased! Contradiction: L
This contradiction does not exist; in fact, regarding sulfur dioxide in flue gas, for sulfur treatment facilities, regardless of the actual oxygen content, it is necessary to convert it to the sulfur dioxide concentration corresponding to an oxygen content of 3%.
I asked the design firm, and they said it’s a common issue; such phenomena do occur when the load on the device is high! I originally wanted to lower the temperature of the incinerator to see the effects, but the manager was concerned that excessive carbon monoxide emissions could lead to an increase in sulfur dioxide levels!
The low-frequency vibration of the incinerator here suddenly disappeared the day before yesterday. After communicating with the design team and the equipment specialists, we suspect that foreign objects in the pipes have blocked certain sections, resulting in a reed effect. After nearly a month of trouble, including issues such as the displacement of foreign objects, the reed effect has disappeared~:L @ylb913