Can steam be used for purging during the initial startup of the synthetic ammonia and ammonia refrigeration units?
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Can steam be used for purging during the initial startup of the synthetic ammonia and ammonia refrigeration units?
Your question is too broad. The media used for cleaning and purging during operation initially include air, steam, etc.; in some cases chemical cleaning is also required, depending on the specific conditions of the equipment and pipelines as well as the process requirements.
The steam pipelines are purged with steam, while other processes are purged with compressed air.
The steam pipelines are purged with steam, while other processes are purged with compressed air. The liquid pipelines are rinsed with water. Oil pipelines are cleaned with oil.
The steam pipelines are purged with steam, while the others are purged with nitrogen.
It should be determined based on the specific conditions of the process pipeline and the required usage, but the main purging media are typically compressed air, nitrogen, steam, etc.
Regardless of the method used for purging, it is essential to ensure that the pipes are completely clean, with no water residue left behind; this is especially true for ammonia pipes, where any water accumulation must be avoided.
The original driving mechanism can be cleaned using steam, nitrogen, or chemicals; during maintenance, it is rinsed repeatedly with deionized water
Generally, steam purging is not used for pipelines that are not steam lines; instead, compressed air or nitrogen is usually used for purging. The second synthesis pipeline requires a water pressure test during the pressure testing process; therefore, no separate cleaning is needed, and cleaning can be carried out simultaneously with the water pressure test.
Steam purging is not allowed; there must be no water inside the ammonia synthesis pipeline equipment, as this is harmful to the catalyst. Steam cannot be used in the ammonia refrigeration section either, as it affects the quality of the lubricating oil and is detrimental to the equipment.
After the installation is completed, a hydrostatic test should be carried out first. Following the test, the pipes should be purged with nitrogen or air, during which the water remaining in the pipes from the hydrostatic test is removed. After purging, an airtightness test is required; in the case of ammonia refrigeration, vacuuming is also necessary.