关键词: 丙烯酸, 丙烷氧化, 燃爆性, 爆炸极限, 安全氧含量

Abstract: Acrylic acid is widely used in industries of different scopes. One of the production methods of it is propane oxidation to acrylic acid in one step. In order to study the flammability and explosion property of gases during the process, explosion limits and safety oxygen content of gases in circulating compressor outlet, reactor entrance and exit were theoretically calculated and experimentally tested. Finally, inert limit were also tested. It showed that gases in circulating compressor outlet and reactor exit were nonflammable in three aspects: explosion limits, safety oxygen content and inert limit. C3H6 and O2 were higher in reactor entrance, which made the mixed gases easy be ignited. But the large amount of inert gases suppressed explosion effectively. As a conclusion, no explosion phenomenon will happen in all the three sections. But gases in reactor entrance are most dangerous, where more supervision on the content and concentration of gases and more control on the temperature and pressure should be taken. Besides this, open flame, hot surfaces and other sources of ignition are forbidden in working spaces. The experimental results can be used for similar oxidation process of propane.

Key words: acrylic acid, propane oxidation, flammability and explosion, explosion limits, safety oxygen content