A quenched hydrogen pipeline is connected to the high temperature reactor. Please tell me how far away from the reactor the quenched hydrogen will be when there is no flow.
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Hello everyone, I have a very troublesome question. Under normal circumstances, 120ºC quenched hydrogen enters a 300ºC reactor through a DN50 pipe for quenching and cooling. The pipeline directly connected to the reactor is 321, and then there is a carbon steel shut-off valve and a section of carbon steel pipeline. When there is no quenched hydrogen in the pipe, how long is the stainless steel 321 pipe between the shut-off valve and the reactor to ensure the temperature of the shut-off valve?
It's not between the reactor and the check valve~{:3_57:}
This post was last edited by longkui1990 on 2017-3-7 09:09 The check valve and the reactor are also very close. It is more accurate to say so.
I feel like you don’t have to worry about this thing. Abnormal situations are rare after all. As long as you pay attention not to be too close when piping, leaving a straight pipe section of three or four meters should be fine.
You need to come up with a calculation to show to the proofreader. . . I can't take a picture of it
Regular army, then just calculate a number based on heat conduction and heat loss and hand it over. This shouldn't be difficult to calculate~
Any ideas? The assumption of a single-layer flat wall is that the area of the flat wall is very large compared to the thickness. The assumption of a single-layer cylindrical wall is that thermal diffusion along the axial direction can be ignored.
This has to be calculated based on the thermal conductivity of the metal. It depends on how many degrees the temperature rises in one hour. Generally, if there are abnormal conditions, the reactor will have to be shut down to cool down. In fact, it is not a big problem. You can check it roughly. I am worried that if the check valve leaks, it will be a problem.* * Annoying, the leakage process medium can’t conduct heat for several days{:3_59:}
The check valve is also very critical. Otherwise, you will have to adjust the valve blindly to see if there is a high temperature report. The key is to find a credible method to calculate this length just in case. .
Believe me, there won't be that method,,,{:3_50:}
While trying ansys, O(∩_∩)Ohaha~