The feature of the technology is that the HCO from FCC is recycled to the inlet of the residue hydrotreating reactor, instead of recycle to FCC itself.

• 该技术的特点是将加氢后的渣油作为FCC的原料,并将FCC的回炼油循环到渣油加氢反应器的入口,而不是自身循环。