Indicate that using mixed olefin and sulfur with high-pressure to prepare the organic sulfurizing agent and using ex-situ presulfurization,is the important direction in presulfurization field.

• 提出采用高压法以混合烯烃和硫为原料制备有机硫化剂,进行器外预硫化,是今后预硫化领域发展的重要方向。