【Daily Question 2019】Hydrogen production and hydrogenation section – Question No. 050
Thread Content
This post was last edited by Network Invisible Man on 2019-2-19 at 15:00 under 【Daily Question 2019】 – Hydrogen Production and Refueling Section, Question No. 050. Briefly explain whether compressed air can be used to remove or displace flammable materials in equipment and pipelines during oil refining processes. Answer: The vast majority of materials used in oil refining are flammable, explosive, and toxic; therefore, when maintaining pipelines and equipment, it is necessary to first drain these materials from them, especially from areas such as bends, and then displace them with nitrogen or steam. It is strictly prohibited to use compressed air for this purpose, as the flammable and explosive gases accumulated in the equipment and pipelines could mix with air to form explosive combinations. In the event of an open flame during maintenance, an explosion will inevitably occur. (Unless otherwise specified, all questions and answers are based on hydrogenation units.) ) Correct: 3 wealth, Incorrect: 1 wealth ； Mass posting of posts – rated based on the lowest score ； Replies that are unrelated to the answer are considered spam and will be deleted immediately. For management purposes, if you need to view content from a few days ago, please go to https://bbs.hcbbs.com/home.php?mod=space&uid=3862647&do=thread&view=me&from=space through the summary post below
The vast majority of materials used in the oil refining process are flammable, explosive, and toxic. Therefore, when maintaining pipeline equipment, it is necessary to empty these materials first, especially from areas such as bends and other hard-to-reach spots. These areas should then be purged using ammonia or steam; it is strictly prohibited to use compressed air for this purpose. Otherwise, the flammable and explosive gases accumulated in the equipment and pipelines could mix with air to form explosive combinations, and any contact with an open flame during maintenance could lead to an explosion.
No, it can easily lead to safety hazards
No, using compressed air for cleaning or displacement can easily result in the formation of explosive mixtures, which may cause flash fires or explosions upon contact with an ignition source.
The vast majority of materials used in the kerosene production process are flammable, explosive, and toxic. Therefore, when maintaining pipeline equipment, it is necessary to empty these materials first, especially from areas such as elbows and other hard-to-reach spots. These areas should then be purged using ammonia, carbon dioxide, or steam; it is strictly prohibited to use compressed air for purging. Otherwise, the flammable and explosive gases accumulated in the equipment and pipelines can mix with air to form explosive combinations, and an explosion will inevitably occur if an open flame is encountered during maintenance
No, it’s not possible. When the oxidizing agents and combustible materials are all present, an ignition source can easily lead to safety accidents