The technology supply for the manufacturing of hydrogenated sugars to manufacture sorbitol, xylitol, mannitol or lactitol comprises the supply for the Loop Reactor, catalyst filtration, catalyst recycling (up to 200 times) and a special pH control system. Multiple plants have been built around the world and the technology has been selected due to the following advantages:

  • high mass transfer rates
  • low catalyst consumption
  • high yield
  • high productivity rates
  • high sugar concentrations

Typical reaction conditions in a Loop Reactor are:

Sugar Type Sugar Conc. (%) Solvent Type Temp (°C) Prassure (bar) Catalyst Type Cat. Conc. (%)* Reaction Time (min.) Remaining Sugar Cont. (%)
Glucose 70 Water 140 70 Raney Ni. 1 – 5 120 < 0.1
Maltose 50 Water 140 60 Raney Ni. 5 240 < 0.05
Lactose 60 Water 120 35 5%Ru/C 4 60 < 0.5
Xylose 35-45 Water 125 70 Raney Ni. 5 120 < 0.5
Xylose 35-45 Water 125 45 5%Ru/C 2.5 120 < 0.5

Note: catalyst amount related to sugar solid content