Severe water contamination at the outlet of the water ring vacuum pump
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Our company uses pressure swing adsorption dehydration cyclic vacuum pumps, and there is a serious problem of water in their output; this water also contains naphthalene, which crystallizes at low temperatures and can block the pipes. When water gets into the compressor, it causes significant damage to the compressor. I was wondering if any expert could suggest some ways to solve this issue
Reply to 1# songzhubao123: I think there is a possibility that the liquid level in the water seal tank is too high. Try lowering it a bit.
I suspect there is a problem with your pre-system for pressure swing adsorption; the gas purification is not adequate. As you mentioned, there is naphthalene at the outlet of the vacuum pump, so how does your adsorbent ensure that it isn’t clogged and becomes ineffective as a result? I suspect that the separation system in the gas-liquid separation tank of your water ring vacuum pump has been clogged by naphthalene, which has altered the structure of this separation system and resulted in poor gas-liquid separation, leading to serious water contamination in the outlet.
The previous process is estimated to have a condensation system with poor condensation efficiency, resulting in material entrainment. Neither the vacuum buffer tank nor the gas-liquid separation system is able to achieve complete separation, which ultimately leads to the vacuum pump being loaded with material. It is recommended to enhance the initial condensation effect to control the separator liquid level.
The condensation effect in front of the Z vacuum pump is poor; it is recommended to check the condensation system
This reason is correct. Another possibility is that the water supply volume is too high.
I think the water replenishment level is too high; it is recommended to have a professional conduct an inspection.
I suggest a method: install a vapor-liquid separator on the equipment that requires vacuum operation, which will help reduce the amount of liquid carried along. You can refer to the manufacturing process of vacuum filters for this purpose! I’m not sure if it will work
The condenser at the outlet of the water ring vacuum pump doesn’t have an automatic drainage mechanism, right? Or perhaps the volume of gas is too high, resulting in poor separation; cooling is very important. It might be better to add a large buffer tank at the inlet of the compressor.
The water replenishment amount might be too high. Additionally, too high an inlet pressure in the vacuum pump can also cause this phenomenon.
The first aspect of this issue is the requirements regarding the installation location of the water seal tank. 1. The center line of the water ring vacuum pump (compressor) is on the same horizontal level as the center line of the water seal tank, and the height of the overflow port of the water seal tank is at the center line (for horizontal water seal tanks) ； 2. An air-liquid separator is optionally installed at the outlet of the water ring vacuum pump (compressor); the length-to-diameter ratio should be greater than 3, the inlet should be located at the 1/2H position with a tangential inlet, and the outlet should extend 300 mm inward. That should solve the problem.