What to do if the oil-to-lean oil heat exchanger is clogged?
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What can be done if the heat exchanger for rich and lean fuel is clogged?
Blockage – what are the causes of the blockage? There may be cases where the physical and chemical properties of the material itself do not meet the requirements for using the equipment, or where gases are present due to impurities in the medium, vaporization of the medium within the process, or other factors. There are also issues such as the detachment of valve cores in the process. Once we find the cause, we’ll know what to do.
Just like on the second floor, first analyze the reasons for the decline in heat exchange efficiency – is it coking? Is it scaled? Are there other substances on the surface of the heat exchange tube? Specific treatment methods: 1. Backwashing with solvent oil (catalytic cracking slurry heat exchanger); 2. High-pressure cleaning (vaporized wastewater cooler); 3. Chemical cleaning; 4. I heard there is another method called ball passing.
Thanks to the person above! It is mainly caused by the long-term accumulation of impurities in the medium, including toluene-insoluble substances such as coal tar dust. It has been in use for eight years without any cleaning; what method should be used for cleaning it?
In the lean-oil and rich-oil heat exchangers, the temperature of the lean oil is high, so it is not prone to clogging, unless the oil flow rate is very low and its viscosity is too high. The temperature of the rich oil is low; therefore, it is necessary to increase the flow rate in order to reduce the risk of clogging. If it really gets blocked, steam can be used for cleaning to clear it.
First, use steam to clean the oil-rich pipelines; if that doesn’t work, consult a professional. The ammonia-containing wastewater heat exchangers in our factory get clogged frequently