从常规加氢脱硫（HDS）到超深度HDS（S〈10μg/g）的转变面临着非常复杂的技术问题。一些硫化物（4,6-二甲基二苯并噻吩等）在常规脱硫条件下很难脱除。在超低硫柴油的生产过程中,这类硫化物也必须脱除。文章对柴油加氢脱硫机理进行了综述。%The shift from normal desulfurization to ultra deep desulfurization（S10μg/g） is faced with many very complicated technical problems.Some sulfur compounds（4,6-dimethyldibenzothiophene,etc） were difficult to remove under conventional desulfurization conditions.These sulfur compounds must be removed in the production process of ultra low sulfur diesel.The paper is an overview of the mechanism of diesel hydrodesulfurization.
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