Study On Reactive Hazards Of Typical Initiator And Preparation Processing Of Presulfurized Oil

Recently, many reactive hazard accidents had happened in home and abroad. Thesafety problems aroused by reactive substances have been paid more and moreattentions in the class of petrochemical industry. The thesis focused on reactivehazards of reactive chemicals and dangerous processing of preparation, such asorganic peroxides and the preparation processing of presulfurized oil.The dynamics, thermodynamics and SADT of organic peroxides were obtainedby accelerating rate calorimeter (ARC), and the changes of decomposition of organicperoxides while the impurities were involved. Comparing with the data in literatures,the data obtained in tests of three organic peroxides were accurate, and this methodwas safe, reliable and rapid. The decomposition of TBPB and TBPEH affected eachother when they were mixed. So a few TBPB would make TBPEH generated moregas and higher pressure. And a few TBPEH would make TBPB decompose at lowertemperature. SADT of the mixtures approached to TBPEH if the concentration ofTBPB was not too high. Inertia solvent n-heptane could reduce organic peroxideshazards except in high concentration. Active energy of TBPB decompositiondecreased by addition of n-butanol. And a lot of gas was generated. TBPB withn-butyraldehyde decomposed at lower temperature and its active energy decreased.Active energy of TBPB decomposition increased by addition of naphthetic acid. Themixture generated less gas in the decomposition. So its hazards decreased. Reactivityof TBPB with Copper ion increased, but its onset temperature decreased becauseCopper ion can catalyze the decomposition of TBPB. However, iron naphthenatemade TBPB active energy and SADT drop.The presulfurized oil production was a micro-endothermal process and a littlehydrogen sulfide was generated. Water and acetic acid in the raw materials led thesystem pressure higher. Other contaminants, such as Oil of vitriol, naphthetic acid and potassium permanganate, had less effects on the reaction. But concentrated nitric acidreacted with sulfur exothermically, and generated more gas. It also reacted with oil athigher temperature. If there was iron oxide in the preparation of presulfurized oil, itwould react with hydrogen sulfide, and generate water. As a result, the pressure rose.Many hazardous materials were included in the process of presulfurized oilproduction. Some accidents, for example, fire, explore and so on would occur ifthey were mishandled.