【Q&A Question 146】2016.09.13
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【Q&A Question 146】September 13, 2016: Why is water used to push out air before purging naphtha? The answer key will be available after responding; scoring is based on answering the key points. Naphtha components are light in nature; if water is not used for purging beforehand, some of these light components will vaporize, leading to pressure buildup in the pipelines or large tanks. Additionally, during the purging process, if rust is present in the pipelines and water is not used for purging first, the static electricity generated during purging could ignite those light components, resulting in fires or even explosions. The function of the water top is to fill the pipeline with water first, in order to prevent fires and explosions as well as pressure buildup.
Due to the low flash point of naphtha, it is prone to posing hazards
Using water to purge the naphtha line before using steam is done for safety reasons; if steam is used directly to purge the naphtha line, the naphtha will vaporize rapidly upon contact with the high-temperature steam, and large amounts of oil vapor will flow through the pipes into the storage tank. Static electricity can easily be generated during this process, which is very dangerous. If water is used to push out the contents before line cleaning, then the majority of the naphtha in the pipeline will be driven away by the water, making the line cleaning process safer thereafter
Using water to purge the naphtha line before using steam is done for safety reasons; if steam is used directly to purge the naphtha line, the naphtha will vaporize rapidly upon contact with the high-temperature steam, and large amounts of oil vapor will flow through the pipes into the storage tank. Static electricity can easily be generated during this process, which is very dangerous. If water is used to push out the contents before line cleaning, then the majority of the naphtha in the pipeline will be driven away by the water, making the subsequent line cleaning safer
Use water to push out the remaining naphtha, preventing the oil from vaporizing rapidly during steam purging and causing an accident!
Naphtha components are light in nature; if water is not used for purging beforehand, some of these light components will vaporize, leading to pressure buildup in the pipelines or large tanks. Additionally, during the purging process, if rust is present in the pipelines and water is not used for purging first, the static electricity generated during purging could ignite those light components, resulting in fires or even explosions. The function of the water top is to fill the pipeline with water first, in order to prevent fires and explosions as well as pressure buildup.
When using steam to clean the lines directly, naphtha vaporizes rapidly upon contact with high-temperature steam, and large amounts of oil and gas flow at high speed through the pipelines into the storage tanks. Static electricity is very likely to be generated during this process, which is quite dangerous. If the pipeline is purged with water first, most of the naphtha inside it will be pushed out by the water, making the subsequent purging process safer.
Using water to purge the naphtha line before using steam is done for safety reasons; if steam is used directly to purge the naphtha line, the naphtha will vaporize rapidly upon contact with the high-temperature steam. As a large amount of oil and gas passes through the pipeline into the storage tank at high speed, static electricity is likely to be generated, leading to accidents.
Answer: To prevent light oil products from vaporizing due to heat, which could lead to static electricity-induced fires as a result of increased flow rates