Everyone, please help me check this simple process issue
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This post was last edited by 793181920 on 2018-1-11 at 22:10. Please help me figure out this simple process issue: 1: What is the main function of the V3, V5, and V6 valves in this circuit? Dehydration, blowing off, or something else? Since there are already devices for removing water, what is the main function of valve V1? Can we do without it? 2: How is water removed from the V10 and V11 circuits? Is the diameter of the negative-pressure pipe also determined based on the flow rate?
V3, V5, and V6 are also used for drainage and waste discharge.
On the V10 and V11 paths, liquid should be drained when the vacuum pump stops operating. Compressed air is used to clear pipes.
There’s a sealed container behind the ball valve, right? When draining water, the ball valve is opened; once the pressure is balanced, water flows into the sealed container. Then the ball valve is closed again. Since there is still negative pressure inside the sealed container, compressed air is used to create positive pressure before the water is drained
So what is the role of V3? Normally, turning on V6 at regular intervals should be sufficient to meet the requirements; is V3 used for exhaust recirculation when the vehicle is parked?
V10 is for draining liquid, so V11 should be for allowing air to enter. After stopping the machine, open V11 to fill the tank with air, and then V10 can drain the liquid smoothly, right?
It should be for controlling the liquid level, corresponding to V7.
Then if I turn on V11 directly, positive pressure can be created; the tank is under negative pressure, so most of the compressed air will flow into the tank. What if I turn on V10 instead? Will that work?
V7 is a on/off valve; how does the liquid level change when v3 is adjusted up or down?
1: V3, V5, V6 valves: Water removal. V3 is to maintain air pressure balance. V7 serves the same purpose. V1 valve: Water removal. The two should not be used interchangeably, as their water removal stages are different. 2: V11 is used to break the vacuum (supply air) when parking. The diameter of the negative-pressure pipe is also selected based on the flow rate (refer to Table 25-5 in Chapter 25 of Volume 2 of the 4th edition of the \"Chemical Process Design Handbook\")