What is the side effect of urea evaporation injector?
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The first-stage evaporation ejector and the second-stage evaporation booster in our factory are equipped with secondary lines. Could you experts please discuss their functions? This post was last edited by lxq700918 on 2009-2-6 23:20 ]
Are there auxiliary lines in both the first-stage evaporation injector and the second-stage evaporation booster? Is there a secondary line for the vacuumed power steam, or is there a secondary line on the process gas phase pipe? No matter what the pipeline is, it should not be necessary. If it is on a gas phase tube, is it to increase the gas phase flow area?
The evaporation ejectors in our factory are also equipped with auxiliary lines! They are used to control the vacuum degree!
Can you elaborate on the circumstances under which it is used? Do you use instrument air to break the vacuum?
This pipeline is led from the gas phase outlet pipeline of the separator and connected to the outlet of the booster.
Is it a valve for adjusting vacuum? For example, when changing the nozzle, use this valve to slightly break the vacuum in the second-stage cycle.
Yes! You can use a meter to break the vacuum! You can also open the drain valve to break the vacuum! These are all equipped with pipes! :)
Can you draw a schematic diagram for us to see? We don't want to see it in the factory. I wonder if this kind of equipment is ready for use?
Accident status, used to break the vacuum in emergency situations. With a little modification, this setup doesn't mean much.
I guess this is a technical improvement measure taken by the host unit. What is its specific function? Can the secondary line of the booster be cleaned by exiting when the booster is clogged? The vacuum is maintained by the primary and secondary injectors. It's not feasible to break the vacuum with the booster auxiliary line, because the injector behind it is still pumping vacuum. It is possible to break the vacuum of a section of the ejector, but it can be directly connected to the atmosphere, and there is no need to connect it to the back of the ejector.
If the boost pump is not turned on, the condensation temperature will be different due to different pressures. For example, the condensation temperature of the gas phase without boost is about 26 degrees, and the circulating water cannot condense at 30 degrees, so the vacuum will drop.
It should be used to control the degree of vacuum. It makes it easier to operate the vacuum and facilitate fine-tuning.
This is a newly built device, provided by the design institute!
I think it is to relieve the load on the surface evaporative condenser. When the vacuum drops, the secondary line can be opened to vent directly to increase the vacuum.
Discuss with friends on floor 14: Directly sell it somewhere! If the above-mentioned auxiliary line valve is opened, the gas phase in the surface condenser will flow back to the separation section on the upper part of the evaporator, which will cause the vacuum to drop (i.e., the absolute pressure will increase), but will not increase the vacuum (i.e., the absolute pressure will drop).
I personally think that the main function of this secondary line, as the friend above said, is most likely to adjust the vacuum of the first and second stages in an accident, that is, to slightly break the vacuum. Or if the diameter of the pipe is particularly small, it can also be used to adjust the vacuum degree.
This is the first time I have heard of such a design! Waiting for discussion and conclusion
Our factory does not break the vacuum. sweat! Is this important? There is a stop valve near the shaft seal air, which can be used to break the vacuum. But it's manual. Khan, how was it designed?
Are you talking about the turbine breaking the vacuum? The original post was about the double wire of the evaporation system booster. I have confirmed that the double wire is 4 inches long. It is designed to break the vacuum in an accident, so it is of little significance.
It doesn’t make much sense, we don’t have it. Our first and second stage evaporators have auxiliary lines for heating steam.
It doesn’t feel like it makes much sense! If it is used to break the vacuum in an accident situation, it is the same as on-site manual cooperation with the master control!