One in use and one standby for the exhaust gas absorption tower circulation pump
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Are there regulatory requirements specifying that the circulation pumps in exhaust gas absorption towers used in fine chemical industries must be operated in a one-in-use-one-backup configuration?
The requirement of having one operating and one standby circulation pump for the exhaust gas absorption tower is usually determined based on engineering design and safety standards. In some fine chemical projects, especially those with processes that are sensitive to environmental impacts, the use of one operating and one standby circulation pump can ensure the stability and safety of the system. This design allows the other pump to take over immediately in the event of a failure in one pump, thereby preventing process interruptions or safety incidents caused by pump failures. Therefore, a one-in-use-one-backup circulation pump is a common standard requirement in the fine chemical industry. .
Set it up according to the specifications and HAZOP requirements
In environmental impact assessments, fans are generally classified as secondary loads; therefore, it’s quite normal to have one circulating pump in operation and one on standby
Is there a source for the standard? Is it mandatory?
Secondary load and one-in-use-one-redundant are two different concepts
That makes sense: handshake
There are no regulations requiring one pump in use and one as a backup; however, the regulations stipulate that environmental protection equipment must not be shut down during production. Two pumps can be used to operate alternately, or when one pump stops operating, the amount of water used for top-level washing can be increased to ensure effective absorption. :)
It’s not mandatory; the exhaust system is generally considered an environmental protection facility that operates as part of a **system**, and its operation is usually not allowed to be stopped. If it stops working for more than half an hour due to a fault, an alarm will be triggered. Therefore, as long as the equipment can remain functional, that’s sufficient.