Residue hydrotreating process characteristics the residue hydrotreating process with fixed bed was studied and summarized, and the following characteristics were summarized:First, different reaction bed or different parts of the same bed there is a difference between 1) hydrotreating reaction is exothermic reaction, in the industrial reactor, the temperature rise in the same bed, the bed layer 2) lower reaction temperature is higher reactive substance in the first place in the bed upper part or the first bed reaction, and reaction material at the bottom of the bed or the subsequent bed reaction 3) upper bed reactant concentration is higher, and the bed layer bottom reactant concentration is low or the upper bed reaction conversion is higher, the load is bigger4) hydrotreating reaction and generating hydrogen sulfide and ammonia, hydrogen consumption reason bed top and bottom layer of the H2 concentration of H2S and NH3 different second, residual oil contains a large amount of impurities and non-ideal components, its average molecular weight, high viscosity, leading to low reaction performance, catalyst deactivation, so the residue hydrotreating process operating conditions demanding, high pressure and temperature, space velocity low third, residue generated in the fixed bed hydrogenation process more coke and metal sulfide and other solid objects, the deposition of solids in the bed will cause the bed pressure difference increases until design limit is reached, device was forced to shut downFourth, the residue hydrotreating process must adopt catalyst combination loading technology
Post time: Apr-23-2020