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Can ball valves be used to replace the two slide valves for the device’s startup and regeneration modes? Current defects of slide valves: 1. High cost – the price of two DN40 valves is around 1.5 million yuan, while imported programmable ball valves with a DN80 size cost approximately 100,000 yuan each ; 2. Imported equipment requires a long time for maintenance and repair ; 3. The adsorbent tends to clog in the regenerator; although the adsorbent delivery pipeline has a diameter of DN100, the slide valve has a small diameter, which means that clogged adsorbent can easily block the slide valve and disrupt the adsorbent circulation (the Yanshan SZorb unit needs to pause the adsorbent circulation on a weekly basis to remove the clogs on the slide valves) ; Process feasibility of replacing slide valves with ball valves: 1. The installation requires a high flow rate, and the slide valves must remain in an fully open state ; 2. The amount of adsorbent circulated through the slide valve can also be controlled by the pressure difference before and after the slide valve ; 3. The time it takes to open and close the two-position ball valve can also be used to control the amount of adsorbent that passes through the slide valve ; 4. Replacing it with a programmable ball valve of DN80 can prevent the caking of the adsorbent from affecting its circulation.
Such a great post – it’s been over a decade, is anyone still following it? What is the current situation?