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The DDA-II process aimed at manufacture of diesel fuel meeting the Euro-IV emission standard from inferior diesel feedstock has been developed and tested in pilot scale. This technology adopts non-noble metal catalysts and a highly integrated two-stage process scheme featuring low investment and operating cost and convenience in operation. Under an appropriate process regime the DDA-II technology can process FCC LCO, a blend of straight-run diesel and FCC LCO, or the SR diesel to yield the diesel product streams meeting the Euro-IV or even higher emission standards.
The DDA-II process aimed at manufacturing of diesel fuel meeting the Euro-IV emission standard from inferior diesel feedstock has been developed and tested in pilot scale. This technology employs non-noble metal catalysts and a highly integrated two-stage process scheme featuring low investment and operating cost and convenience in operation. Under an appropriate process regime the DDA-II technology can process FCC LCO, a blend of straight-run diesel and FCC LCO, or the SR diesel to yield the diesel product streams meeting the Euro-IV or even higher emission standards.