Device startup purging
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I plan to start up the plant in its original configuration. For purging the pipeline equipment, I intend to use steam. As for the pipelines that connect to the tower, should I disconnect the connections between the pipelines and the tower, or should the steam be directly introduced into the tower? It’s my first time carrying out such operations, so I’m not very familiar with this process. Please share your insights; thanks, extra points appreciated
Blow through the pipeline; if the tower has not been cleaned, it is possible to blow air into it. If it has already been cleaned, it is recommended not to blow air into the tower. Stop the blowing at the inlet, and also close the valves to prevent blowing
Under no circumstances should one enter the tower~~ Personal opinion
Blow out the inlet flange; after it is clean, proceed to enter the tower
Pipes first, then the tower. It would be troublesome if impurities got into the tower
There must be a plan for the purging of the equipment and the entire system. It’s not something that can be simply discussed like that. If you have a general idea, it’s fine. For example, when using steam purging, the stress changes in the system must be taken into account ； Specifically, whether this gas medium reacts chemically with the material of the system. . . . . . I’m not sure which category your system falls into; it is recommended to use dry air for purging. Blow in sections; there should be blind flanges inside the equipment as well as in the containers that contain fillers, to prevent dirty substances from being blown into the equipment. There are also several methods for purging. . . . . . There are many aspects involved; specifically, it is necessary to follow the purging plan issued by the design department. (For reference)
You can’t enter the tower, right? And shouldn’t there be a purging plan?
The last edit to this post was made by yang1980008 on 2017-5-18 at 11:01. It is not possible to blow air into the tower; pipeline purging should be carried out using the pipelines themselves, and one principle applies here: each piece of equipment must be treated separately
First, purge the steam line separately; steam is injected into the tower to purge and vent through various pipelines. For towers that cannot withstand pressure, the connection must be made at the equipment flange; purging is just one aspect of the process, as water washing is also required thereafter. I’d like to ask quietly: when the installation was first put into operation, wasn’t the equipment tested for hydraulic pressure? After testing the water pressure, rinse the distillation outlet directly to avoid extra hassle
You can use a tower as the air source (first remove the water), purge each distillation line (if there are check valves, direct the flow in that direction, or add cross-connections during design), and evacuate before and after the control valve as well as at the pump inlet and outlet