Is the steam purge stripping regeneration process pipeline feasible?
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This post was last edited by liaifeng on 2018-8-2 at 12:17. Also, is there a better order for water washing, water transportation, steam purging, pressure testing, and airtightness testing? Dear sea friends, please provide a detailed answer based on your experience!
Does the steam purge stripping regeneration process refer to the use of steam to directly strip the acid water unit? Direct stripping produces a large volume of water, has higher energy consumption, and requires significant amounts of steam. Steam pipelines need to be purged with steam before being put into use. Before putting the solution circulation pipeline or water pipeline into use, it is generally necessary to perform pressure testing on the pipeline, wash it with water, and conduct a water test run; partial airtightness testing can also be carried out during this water test run.
Does the steam purge stripping regeneration process refer to the use of steam to directly strip the acid water unit? Direct stripping produces a large volume of water, has higher energy consumption, and requires significant amounts of steam. Steam pipelines need to be purged with steam before being put into use. Before putting the solution circulation pipeline or water pipeline into use, it is generally necessary to perform pressure testing on the pipeline, wash it with water, and conduct a water test run; partial airtightness testing can also be carried out during this water test run.
In terms of design, the purging prior to startup is carried out using low-pressure steam pipelines, and generally unpurified air is used for such purging. Therefore, my question is whether it is appropriate to use steam for purging. Also, when using steam to purge the liquid-phase pipelines, should the steam flow inside the equipment to pass through it, or should it bypass the equipment?
This post was last edited by cg424 on 2018-4-12 at 10:50. Low-pressure steam pipelines can be purged with steam, but steam purging is more dangerous than using factory air for purification. Steam purging should be carried out in stages: purge thoroughly in front of the equipment before moving on to purge it from the back. Due to limitations such as design temperature and material properties, it is not recommended to use steam for purging non-steam pipelines.
The design can no longer be changed now; the purging can only be done using steam and nitrogen. However, nitrogen cannot be used for this purpose. A few pipelines are okay, but for the most part, steam is still necessary. I’m also concerned about the risk that the anti-corrosion coating on the tanks might come off during the purging process. Other issues such as water hammer and burns have also been taken into consideration