Steam turbine oil antioxidant compound and its preparation method and a method of adding

Steam turbine oil antioxidant compound and its preparation method and a method of adding the antioxidant by the radical inhibitors, peroxide decomposers and metal deactivators composition, radical inhibitor containing an active hydrogen atom of a phenolic shield antioxidants, hindered amine antioxidants or phenolic amine compound, peroxide decomposing agent is a phosphite or sulfide, metal deactivators thiadiazole derivative or a heterocyclic derivative, representing the three the percentage by weight of antioxidant (35wt% ~ 78wt%) :( 16wt% ~ 59wt%) :( 0.5wt% ~ 8wt%); the preparation method: radical inhibitor was added in the aldehyde solution, the peroxide decomposition agents and metal deactivators, mixed uniformly into the reactor, controlling certain parameters of elevated temperature and pressure for a reaction, the reaction product after the distillation, washing, purification, crystallization, drying, antioxidants derived products; the present invention further provides the amount of the additive and the antioxidant additive process, avoiding the prior art that the presence of antioxidants to run self-oxidation oil abnormal precipitation or color problems.