TECHNOLOGY FOCUS - CHEMICAL ENGINEERING - Preferred Process: In continuous hydrogenation of triglyceride containing raw materials like vegetable oils, each partial raw material feed stream is mixed with the corresponding partial stream of hydrogen containing gas to form a partial mixed stream (F1 + H1, F2 + H2) before entering the reactor system. Each partial stream of hydrogen containing gas following in downstream direction is larger than the preceding one by essentially the same factor as the corresponding partial streams of raw material feed with which they are mixed. The hydrogen excess is at least 50%, preferably 75 to 400% and even more preferred 100 to 300%. The weight ratio of added diluting agent to total raw material feed is less than 1, preferably less than 0.5. The partial feed streams and the corresponding partial streams of hydrogen containing gas are all mixed at the same ratio of standard cubic meter of gas to cubic meter of raw material feed. Amount of the partial streams or the partial mixed streams to the second and, if present, the following catalyst beds is controlled so as to adjust the temperature at the inlet of every catalyst bed to essentially the same temperature as at the reactor inlet at the first catalyst bed. The reactor system comprises more than 3, preferably more than 4 and in particular more than 5, but less than 20, preferably less than 15 and in particular less than 10 catalyst beds. The hydrogenation catalyst is used only in the first catalyst bed and another hydrogenation catalyst comprising at least one element from group VIB and at least one element from group VIII and at least one refractory oxide support selected from alumina and silica alumina, the element from group VIB being selected from molybdenum and tungsten; and the element from group VIII is selected from nickel and cobalt; the elements being in the sulfide form, are used in the catalyst beds following the first one. Hydrogenation catalyst is used in every catalyst beds of the reactor system of the present invention. Hydrogenation takes place at hydrogen partial pressures in the range of 1 to 8 MPa. Hydrogenation takes place at temperatures of 145 to 280 degrees C. The liquid hourly space velocity (LHSV) of the raw material feed in each bed is from 0.1 to 5 m3/m3 catalyst/hour. The linear velocity of the liquid material is in the range from 1 to 6 mm/second in each bed. The weight ratio of added diluting agent to raw material feed at the reactor entrance is 4:1 or less and each partial stream of fresh raw material feed as well as each partial stream of hydrogen containing gas is by a factor of 1.25 or larger than the previous partial stream. EXAMPLE - No suitable example given.