Control parameters for raw material components of acidic water
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The acidic water stripping unit has a capacity of 600,000 tons per year, with extraction carried out via pressurized lines in a single tower. Currently, the gaps in the tube bundle of the bottom reboiler are severely blocked, resulting in extremely low heat exchange efficiency. I would like to ask experts if there are any good solutions for such coking problems. The effect after shutting down the device for cleaning is not significant. Additionally, are there any other aspects related to the quality of the acidic water discharged from upstream that need to be monitored and controlled (other than ammonia nitrogen, sulfides, oil content, iron ions, and chloride ions)?
It’s a bit much to expect someone with digestive issues to also decide what to eat; it’s fine to eat whatever is available, but the way in which food is consumed should be carefully planned. Are steps such as oil removal from the storage tanks, regular removal of debris, periodic cleaning of the oil removers, and regular drainage and debris removal from the raw material water tanks not being carried out as required? If the quality of the incoming materials is poor, it is recommended to increase the frequency of appeal steps.
The water flow from upstream is difficult to control, as its oil content is too high. First, control it at the upstream stage; second, do everything possible to remove the oil, and if that doesn’t work, stop and clean it out.
Well, I think what you say makes sense.
An oil removal device is installed before the buffer tank that receives the acidic water from upstream, and the oil removal efficiency is strictly controlled. Meanwhile, the acidity of the acidic water is adjusted to a level suitable for oil removal; if necessary, the pH is adjusted again to optimize the appropriate acidity of the acidic water entering the stripping tower, so as not to affect the stripping efficiency. From a process operation perspective, it may increase costs and be more complicated to operate, and it requires the use of certain online analysis tools, but it facilitates long-term stable operation.