Is it possible to use separate top butterfly valves?
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Everyone, I would like to ask if the butterfly valve can be operated without separate tops? Simply don't design a split-top butterfly valve. How to operate it during startup and shutdown?
:LHow to control the reaction pressure without a butterfly valve?
This post was last edited by aqshhsq on 2010-5-27 19:20. It is not necessary. When starting and stopping, the reaction pressure can be controlled by using the hand valve or electric valve of the air cooler at the top of the fractionation tower and the number of air-cooling fans to start and stop.
The original catalytic device did not have a split-top butterfly valve, and was controlled by an electric valve installed at the cooler inlet. Later, it was changed to use butterfly valves, which are relatively simple and require only one valve, unlike electric valves, which must have one in front of each group of coolers.
It is too difficult to operate according to the method on the 3rd floor. When driving, several people have to guard the hand valve or electric valve of the air cooler at the top of the fractionation tower to adjust the opening at any time. I think it’s best to design it, otherwise it will be very troublesome in production in the future.
1. Installing electric gate valves in front of each group of air-cooling units is expensive and slow. 2. Use hand valve to control, slowly. If a butterfly valve is not used, the pneumatic unit must be turned on first and used to control the reaction pressure. But it is not safe from a security perspective.
In fact, I am currently looking at a device that does not have a split-top butterfly valve, and there is no electric valve in front of the cooler. I also want to turn on the air compressor to control the reaction pressure. I would like to ask if there is a device with this technology now? What should be done when starting work?
It's quite rare. This requires the operation of the air compressor to be more profound than traditional operations.
Can. Use pneumatic torch torch hand valve control
The butterfly valve of our device basically does not work. The reaction pressure is controlled by the barometer inlet hand valve.
The split-top butterfly valve is mainly used before switching the steam seal to fuel injection to control the reaction pressure. During normal production, if the reaction pressure continues to drop and the air compressor has little room for adjustment, the butterfly valve can be closed to control the pressure.