Which one resets first after the catalytic main air self-protection action and the unit self-protection action?
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Which one resets first after both the catalytic main air self-protection and the unit self-protection systems activate? Why?
1. Confirm that the conditions for introducing main air are met, and confirm that the conditions for activating the main air self-protection system are satisfied； 2. First, restore the low-flow protection for the main fan or the fault protection of the main fan unit; then restore the differential pressure protection for the two reactors; next, restore the pressurization air protection for the regenerator sleeve; afterward, restore the feed protection; and finally, restore the pressurization air protection for external heat extraction
Reason: It is related to the order of commencement; you should know the order of commencement, right!
The previous answer seems to not have understood the question properly; I’m sorry. A book I read said that either low flow of the main air supply or the unit’s fault protection mechanism should be activated first, so it seems that either option would work.
Of course, it’s necessary to first restore feed self-protection. Otherwise, the steam pressure cannot be maintained, and the catalyst will undergo significant thermal degradation. There’s no need to rush to restore the main air supply; it can be restored before starting up! !
The process self-protection function must be reset first; otherwise, the unit’s self-protection cannot be reset, which is a requirement for safety.
The low main air flow and the unit should operate simultaneously, right? The two are inseparable! When putting it into operation, the unit’s self-protection system should be activated first to protect the unit. Self-protection should be activated as soon as the unit starts operating, and it should only be put into use once normal production is achieved through the process self-protection mechanism
1. First, restore the main air self-protection system. 2. Self-protection of the two devices; 3. Self-protection of the raw materials. Since main air flow self-protection is the highest level of self-protection, only once this is restored can the self-protection of the raw materials be ensured. You can find out by looking at the logic diagram for self-protection.
1. First, restore the main air self-protection system. 2. Self-protection of the two devices; 3. Self-protection of the raw materials. Since main air flow self-protection is the highest level of self-protection, only once this is restored can the self-protection of the raw materials be ensured. You can find out by looking at the logic diagram for self-protection.