A kind of heavy oil hydrotreating method
A treatment method and heavy oil hydrogenation technology, applied in the directions of hydrotreating process, treatment of hydrocarbon oil, chemical instruments and methods, etc., can solve the problems such as the inability of the catalyst to play effectively, and achieve easy implementation, low energy consumption, repeatability and high efficiency. good controllability
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[0019] According to a preferred embodiment of the present invention, the modified carrier is prepared by a method comprising the following steps:
[0020] (1) impregnating the hydrothermally treated carrier in an alkaline solution A containing a metal additive compound providing the metal additive, and then drying;
[0021] (2) impregnating the carrier obtained in step (1) in the acidic solution B containing the acidic additive compound providing the acidic additive, then drying and calcining.
[0022] In the preparation method of the above-mentioned modified support, the inventors of the present invention have found through in-depth research that before impregnating the solution A containing the metal additive compound, the support is subjected to hydrothermal treatment, and the impregnation of the two impregnations is controlled. The acidity and alkalinity of the liquid can make the metal additives mainly distributed in the shell layer of the carrier, while the acidic additive...
preparation example 1
[0092]This preparation example is used to illustrate the preparation process of the alumina carrier used in the present invention.
[0093] Take by weighing 1000 grams of dry rubber powder produced by Changling Catalyst Factory (the dry basis is 71% by weight, wherein the content of pseudoboehmite is 68% by weight, the content of trihydrate alumina is 5% by weight, and the balance is amorphous alumina ), 30 grams of Tianjing powder (product of Henan Lankao Tianjing Rubber Factory) and 30g of hydroxymethyl cellulose and mix evenly, then add 1200 milliliters of aqueous solution containing 28g of nitric acid, and extrude on a plunger type extruder into an outer diameter of 2.5 mm, a Raschig ring bar with an inner diameter of 1mm. Then the wet Raschig strip was dried at 120° C. for 4 hours, and then fired at 960° C. for 3 hours to obtain the protective agent carrier Z1. Measured by the BET method, the pore volume of the protective agent carrier Z1 is 0.95mL / g, and the specific su...
Embodiment 1
[0097] This example is used to illustrate the heavy oil hydrotreating method provided by the present invention.
[0098] (1) Preparation of modified carrier
[0099] (1-1) Take 200 grams of the carriers Z1, Z2 and Z3 prepared in Preparation Example 1, firstly treat the carriers at 135°C for 12 hours with hydrothermal treatment, and then use 165 ml of hydrothermally treated carriers with a temperature of 40°C containing 15 g / L Mg(NO 3 ) 2 The aqueous solution (pH value is 11) is saturated and impregnated for 1 hour, and then dried at 200 ° C for 8 hours to obtain a carrier loaded with metal additives;
[0100] (1-2) The carrier obtained in step (1) is loaded with metal additives in 145 milliliters of 40 ° C containing 10 g / L H 3 BO 3 Soaked in an aqueous solution (pH value of 6) for 1 hour, then dried at 120°C for 3 hours, and then calcined at 400°C for 3 hours to obtain modified supports S1-1, S2-1, and S3-1.
[0101] (2) Preparation of protective agent, demetallization a...
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