Stable compressed rich gas washing water
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Do you still use water for washing stable-compressed rich gas? What kind of water do you use? What are the disadvantages of not using it?
We have been using acid water from the overhead gas separator in the fractionation tower to wash the rich gas; this water is used primarily to remove hydrogen sulfide from the rich gas and thereby reduce pipeline corrosion. Using this water for washing helps to decrease the amount of acidic water that needs to be discharged, while avoiding it increases the load on the purification process
We are also using it; we use demineralized water
Use it to wash the rich gas with acidic water, thereby reducing corrosion of pipelines and equipment
Stable salts can be removed with just water; using deionized water will definitely work well and yield good results, but it is rather wasteful. Using fresh water can easily cause scaling in the system
Oh, I still haven’t figured out what substance is being removed. We use acidic water here as well; we thought it was removing something that acted like a corrosion inhibitor
Most companies use acidic water, but some do not employ water washing – I’m not sure why. Are there any companies that don’t use this method? Could you please share your situation? Does air cooling lead to salt formation?
Consider switching to acidic water in larger gasoline tanks
We use fractionated acidic water. Those plants that are not in use may have excellent raw materials, or their upstream units may be effective at removing sulfur and salt. I think that if they remain unused for a long time, the furnace tubes or heat exchangers in the downstream units (such as hydrorefining units) will be affected.