How can we ensure that the standby pump for the quench water pump is ready for use?
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Experts: Due to the poor quality of the cooling water, scaling occurs easily, resulting in severe dust accumulation and scaling on the impellers of the standby pumps as well as in the pipes. When it is necessary to start the backup pump, it may fail to start or the flow rate may be too low. Seek a reasonable solution.
I think the most fundamental solution is to improve water quality.
It makes sense; if the water quality issue isn’t resolved, no matter what measures are taken, they will be of no use.
The last edit to this post was made by GSP on 2011-5-2 at 22:14. Let me explain our approach: we add dispersants to the graywater system, and keep a backup pump ready; this serves to prevent sedimentation as well as to avoid damage to the equipment caused by excessive stress resulting from sudden startup
I’m not quite sure about this; I’d like to learn more about it too. Please advise me, o!!!!
Reply to 4#: Thank you. We also use hot standby systems and add dispersants; the water quality is good as well, but the backup pumps still suffer from dust accumulation and scaling.
Hot standby is a must; if there is really a concern about scaling or ash accumulation, high-pressure boiler water can be used instead of the ash-water heating pump. Personal opinion.
For a more practical solution, it is recommended that you regularly reverse the pump operation; before doing so, remove the dust accumulated inside the pump and ensure that there is flow at both the inlet and outlet of the pump
“The gasification unit at Qilu Second Fertilizer Plant successfully implemented a standby system for the quench water pump. Summary: Recently, the quench water pump, a key piece of equipment in the gasification unit of Qilu Petrochemical’s Second Fertilizer Plant, was able to operate in standby mode for extended periods of time, thereby eliminating the production-related risks that had existed within the unit for two years and laying a solid foundation for its long-term operation. Since the gasification unit of this plant uses American GE technology, a one-in-use and one-backup configuration is adopted for the quench water pump design. Recently, the quench water pump, a key piece of equipment in the gasification unit of Qilu Petrochemical’s Second Fertilizer Plant, was successfully put into long-term standby mode, thereby eliminating the production issues that had persisted within the unit for 2 years... So you haven’t seen the specific content?
I’m from Qilu No.2 Chemical Plant; I’ll ask when I’m at work
Replace the water in the system with fresh water, and increase the dispersion dosage.