Leakage in the low-temperature waste heat recovery heat exchanger for sulfuric acid
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If the evaporator, preheater, or heater is leaking, how can it be detected quickly? How to carry out maintenance, how to assess the quality of the maintenance, and how long does the entire maintenance process take? What needs to be prepared in advance? Experts, help!
Any leak is detected immediately; the pressure on the water side is high while the pressure on the acid side is low. If a leak occurs, the equipment becomes unusable. There are interlocks for temperature differences and acid concentration, and in the event of a leak, vibration levels become very high. We have vibration sensors installed on the evaporator. The most important thing is that the equipment passes the pressure testing during factory inspection. Basically, maintenance involves replacing the equipment, conducting factory inspections, and pressure testing, which is the best approach
How intense is the exothermic reaction when water is added to sulfuric acid?
I was there in person once; there was a leak in the evaporator pipes, and those pipes could shoot high into the air
Hello, do you still have the process diagram for sulfur-based acid production? Could you send it to me?
Vibration, large fluctuations in the acid temperature at the outlet, high acid concentration in the dry absorber.
It seems that so-called low-temperature heat recovery is inherently unsafe in terms of design.
Hehe, it can’t be said that way; the design should already take leaks into account – once a leak occurs, everything gets interlocked!
This post was last edited by shen*rong2006 on 2020-9-7 at 14:15. Hehe, there’s a problem with the computer – all posts are being sent again; they can’t be deleted, so I just edit them anew. Low-temperature recovery doesn’t seem as mysterious anymore as it was when we first started working with it. If there’s a leak, well, that’s just how it is. One of my friends’ evaporators has leaked a few times – no need to worry!
Fluoroplastic heat exchangers are simple and convenient to maintain