Issues regarding the installation of the condensate recovery pipeline for high-pressure steam pipes and the location of the vortex flow meter

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This post was last edited by hawkings on 2019-8-19 at 17:02. As the title indicates, two pipelines are facing the following issues; I’m seeking advice from everyone. If the moderators think this post should be moved to a different forum, please do so: 1) The pipeline shown in Figure 1 is part of the high-pressure steam condensate system. High-pressure saturated steam with a pressure of 9.0 MPaG enters the system, and its pressure drops to 8.0 MPa after passing through the heat exchanger. The condensate then flows back to the condensate recovery system via pipes connected to the drain valves. The piping layout is as shown in the diagram, so work was initially carried out according to the layout indicated by the black lines. However, the client believes that the pipes should be installed as shown by the red lines, otherwise liquid pockets may form. Is this requirement reasonable? What is the theoretical basis? I want to learn systematically about steam system condensate recovery – what materials are suitable as a starting point? 2) The medium in the pipeline shown in Figure 2 is hydrogen-rich gas; the feed gas is washed, heated, and deoxygenated (at a temperature of about 150°C?) ) The gas flows from this heat exchanger to the inlet of the next device, which is located at a higher elevation than the inlet of the condenser; the gas temperature drops to below 40°C, and the pressure is around 1.1 MPa. I believe that liquid water is present in this installation location, and since the frequencies generated by the vortex flow meter differ for gas and liquid, it could lead to significant fluctuations in the meter’s readings. Could the situation I’m worried about actually occur? Is it necessary to move the location of this vortex flow meter? It has been impossible to upload the images successfully. The problem with the first pipeline can be described as follows: the steam pipeline leaving the heat exchanger goes down to a drain valve assembly at ground level; after that, the pipeline rises to a height of 6 meters before turning horizontal and dropping to a height of 5.3 meters, after which it enters the main condensate recovery pipeline on a platform at 8.3 meters height. The owner believes that the pipeline layout needs to be changed, as the current arrangement results in liquid pockets at the junction between the 5.3-meter platform and the 8.3-meter high pipeline corridor. The pipeline should instead rise from the ground level and make a direct 90-degree bend before connecting to the pipeline at 5.3 meters height, thereby eliminating any liquid pockets on the platform.