Under what conditions is it easy for water to enter a converter?
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May I ask the seniors, under what circumstances does water enter the converter? Is it the low temperature or the high gas flow rate that results in poor separation and leads to water entering the converter?
The question is too vague; I don’t know what exactly you’re asking. Did water get into the furnace during production? Will there be a reaction? Our factory has never encountered such a situation; we use medium-low pressure conversion, and saturated steam is also added during the medium-pressure conversion process. Theoretically, the water contained in the gas should not affect the conversion process
If the airflow is too strong, filtration will be insufficient, and water will indeed be carried into the converter. Destroy the catalyst!
1. The liquid level in the separator ahead of the converter is high, or there is a problem with the separator’s mesh. 2. The inlet temperature of the converter is significantly lower than the specified value (the difference is 30 degrees or more)
There may be water in the gasification zone, or the liquid level in the water-gas separator might be high; furthermore, the temperature of the gas entering the furnace could be below the dew point temperature of the water-gas, resulting in water formation.
It depends on the dew point temperature of your equipment. When the temperature is below the dew point temperature, the moisture in the process gas will condense into water. The level of the dew point temperature is determined by the operating pressure and the water vapor ratio of the equipment. Additionally, it is important to pay attention to the various drain systems before the process gas enters the shift converter; by paying attention to these aspects, it should be possible to avoid most cases of moisture contamination
It depends on the dew point temperature of your unit. When the temperature is below the dew point temperature, the moisture in the process gas will condense into water. The level of the dew point temperature is determined by the operating pressure and the water vapor ratio of the unit. Additionally, it’s important to pay attention to the various drain systems before the process gas enters the shift converter; by paying attention to these aspects, it should be possible to avoid most cases of moisture contamination. Let me add a few more points； 1. There are two types of water in the gasification zone: one is a high content of water vapor, which cannot be separated by the separator. Secondly, COD substances cause foam to form in the scrubber tower, preventing the separator from performing its function. 2. Problems with the separator itself, such as a damaged demisting screen or false liquid level readings.
It could be that the atomization effect of the boiler water nozzles is poor, and an improperly designed desuperheater can also lead to the presence of water in the steam
This post was last edited by z880347730 on 2011-4-12 at 19:35. 1. The quality of the steam entering the conversion unit is poor, with a high moisture content; inadequate separation and demisting before it reaches the unit results in water being carried into the conversion furnace. 2、Inadequate handling of the discharge of oil and water from the gas; delayed removal of oil and water from the demister, poor performance of the demister, and failure to promptly drain the oil from the demister led to oil and water entering the shift converter. 3. The degreaser loses its effectiveness over time due to prolonged use. 4. The drainage from the pre-conversion furnace’s guide drain is not timely. 5. The amount of water added to the humidifier is too large. 6. The humidifier nozzle is damaged or has fallen off.
It may be caused by the following reasons: 1. Low temperature of the steam entering the furnace; 2. Low temperature of the humidifier; 3. Inadequate water removal performance of the mesh filter and the degreaser, resulting in insufficient purification of water from the process gas. Water entering the converter will cause damage to the catalyst; our plant has not encountered such a situation.
During the startup of the shift system, process gas is introduced, and the temperature of the shift furnace rises too rapidly. Is there any quick and effective way to lower the furnace temperature swiftly? During the cooling process, could water vapor condense, leading to issues such as water entrainment in the gas-liquid mixture?