Preparation method of hydrotreating catalyst carrier

Abstract

The invention relates to a preparation method of a hydrotreating catalyst carrier. The preparation method includes following steps: (1) preparing a halogen inorganic acid solution; (2) mixing the halogen inorganic acid solution with an oxide precursor to obtain a binding agent; (3) mixing the binding agent with catalyst carrier raw material powders and performing a moulding and drying process; and (4) impregnating the dried material in the step (3) with an ammonia water solution, an ammonium carbonate solution or an ammonium bicarbonate solution, and drying and roasting the impregnated material to obtain the catalyst carrier. Compared with a preparation method in the prior art, the preparation method is carried out with the low-pollution and low-cost halogen inorganic acid as an acidic glue solvent during the process, so that a problem of NOx pollution during the preparation process of the catalyst carrier is solved and a poor influence on performances of the catalyst carrier with the halogen inorganic acid is overcome.

Description

technical field

[0001] The invention relates to a loaded catalyst carrier and a preparation method thereof, especially NO NO in the preparation process x Process for preparation of vented hydrotreating catalyst support. Background technique

[0002] As the quality of crude oil becomes heavier and worse year by year, environmental protection regulations become increasingly strict, and the market demand for clean oil products continues to grow, making hydrogenation technology for the production of clean fuels more and more widely used. Distillate oil hydrotreating refers to the catalytic reaction of hydrodesulfurization, hydrodenitrogenation, hydrodeoxygenation, hydrodemetallization and unsaturated hydrocarbon hydrogenation of raw oil and hydrogen on the catalyst surface under high temperature and high pressure. Due to the deterioration of crude oil quality year by year, and in order to improve economic benefits, refineries have generally adopted crude oil vacuum deep drawing...

Examples

preparation example Construction

[0022] Below by the preparation process of hydrotreating catalyst carrier, further illustrate method and process of the present invention:

[0023] 1) Prepare ~0.5mol / L halogenated inorganic acid solution.

[0024] 2) Weigh 720g of small-pore alumina with a dry basis (weight) of 72.2%. Small-pore alumina is commercially available aluminum chloride method to prepare small-pore pseudo-boehmite, with a pore volume of 0.32mL / g and a specific surface area of ​​286m 2 / g, the particle size is less than 180 mesh.

[0025] 3) Measure 1265mL of the halogenated inorganic acid solution in step 1 and slowly add it to the mortar with small holes of alumina. After standing still for 20 minutes, stir evenly to form a white translucent paste. Leave it for 8 hours at room temperature to prepare The present catalyst carrier uses a binder.

[0026]4) Pulverize the main component of the catalyst carrier, macroporous alumina or amorphous silica-alumina colloidal products, and sieve the particle...

example 1

[0030] Example 1 (reference scheme)

[0031] Take 1280mL dilute nitric acid solution (concentration: 4g nitric acid / 100mL), gradually add 720g small-pore pseudo-boehmite (SB powder produced in Germany), after standing still for 20min, stir evenly to form a white translucent paste, stand still at room temperature After 8h, the adhesive was prepared. Take 580g of macroporous alumina (produced by Tianjin Chenoya Company, with a pore volume of 0.80mL / g and a specific surface area of ​​295m 2 / g, dry basis 72.1%), add 6g of scallop powder, and add 562.9g of binder, roll for 30 minutes, add an appropriate amount of distilled water to make the mixture into a paste that can be extruded, extruded, extruded machine orifice 1.5mm clover in diameter. The wet strips were dried at 120°C for 4 hours, and then calcined at 550°C for 3 hours, numbered HT-1S.

example 2

[0032] Example 2 (reference scheme)

[0033] The dilute nitric acid solution in Example 1 was replaced with acetic acid solution (concentration: 13.2g acetic acid / 100mL), and the others were the same as in Example 1 to prepare a carrier, numbered HT-2S.

technical field

[0001] The invention relates to a loaded catalyst carrier and a preparation method thereof, especially NO NO in the preparation process x Process for preparation of vented hydrotreating catalyst support. Background technique

[0002] As the quality of crude oil becomes heavier and worse year by year, environmental protection regulations become increasingly strict, and the market demand for clean oil products continues to grow, making hydrogenation technology for the production of clean fuels more and more widely used. Distillate oil hydrotreating refers to the catalytic reaction of hydrodesulfurization, hydrodenitrogenation, hydrodeoxygenation, hydrodemetallization and unsaturated hydrocarbon hydrogenation of raw oil and hydrogen on the catalyst surface under high temperature and high pressure. Due to the deterioration of crude oil quality year by year, and in order to improve economic benefits, refineries have generally adopted crude oil vacuum deep drawing...

Examples

preparation example Construction

[0022] Below by the preparation process of hydrotreating catalyst carrier, further illustrate method and process of the present invention:

[0023] 1) Prepare ~0.5mol / L halogenated inorganic acid solution.

[0024] 2) Weigh 720g of small-pore alumina with a dry basis (weight) of 72.2%. Small-pore alumina is commercially available aluminum chloride method to prepare small-pore pseudo-boehmite, with a pore volume of 0.32mL / g and a specific surface area of ​​286m 2 / g, the particle size is less than 180 mesh.

[0025] 3) Measure 1265mL of the halogenated inorganic acid solution in step 1 and slowly add it to the mortar with small holes of alumina. After standing still for 20 minutes, stir evenly to form a white translucent paste. Leave it for 8 hours at room temperature to prepare The present catalyst carrier uses a binder.

[0026]4) Pulverize the main component of the catalyst carrier, macroporous alumina or amorphous silica-alumina colloidal products, and sieve the particle...

example 1

[0030] Example 1 (reference scheme)

[0031] Take 1280mL dilute nitric acid solution (concentration: 4g nitric acid / 100mL), gradually add 720g small-pore pseudo-boehmite (SB powder produced in Germany), after standing still for 20min, stir evenly to form a white translucent paste, stand still at room temperature After 8h, the adhesive was prepared. Take 580g of macroporous alumina (produced by Tianjin Chenoya Company, with a pore volume of 0.80mL / g and a specific surface area of ​​295m 2 / g, dry basis 72.1%), add 6g of scallop powder, and add 562.9g of binder, roll for 30 minutes, add an appropriate amount of distilled water to make the mixture into a paste that can be extruded, extruded, extruded machine orifice 1.5mm clover in diameter. The wet strips were dried at 120°C for 4 hours, and then calcined at 550°C for 3 hours, numbered HT-1S.

example 2

[0032] Example 2 (reference scheme)

[0033] The dilute nitric acid solution in Example 1 was replaced with acetic acid solution (concentration: 13.2g acetic acid / 100mL), and the others were the same as in Example 1 to prepare a carrier, numbered HT-2S.