Heavy oil hydrocracking catalyst, and preparation method and applications thereof

A cracking catalyst, heavy oil hydrogenation technology, applied in physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc. Aluminum pore volume is small and other problems, to achieve the effect of good peptization, improved hydrocracking performance, and long operation cycle

Active Publication Date: 2016-06-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The resulting silicon-containing alumina has a small pore volume, relatively many small pores, and low acidity, and its comprehensive performance needs to be further improved.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] (1) Preparation of high silica alumina dry glue

[0036] Take kaolin and pulverize it on a pulverizer. The pulverized kaolin is roasted in a high-temperature furnace at a temperature of 800° C. for 3 hours. The roasted kaolin is sieved through a 160-mesh sieve to obtain modified kaolin.

[0037] Preparation of sodium metaaluminate solution concentration is 60gAl 2 o 3 / L, the caustic ratio is 3.5, a total of 1.2L, weigh 100g of sieved kaolin, add it to the sodium metaaluminate solution to make a suspension, and control the solution temperature to 50°C.

[0038] A suspension of sodium metaaluminate containing kaolin with a pH value of 2 and a concentration of 25 g SiO 2 Add 3.0L of acidic silica sol / L into the reaction kettle in parallel, control the gel forming temperature at 70°C, and the gel forming pH value at 5.5. After gel formation, add 5wt% sodium carbonate solution to adjust the pH value to 8.0, then enter the aging stage, the aging temperature is 70°C, and t...

Embodiment 2

[0043] The other conditions of the high-silicon alumina dry glue are the same as in Example 1, except that the kaolin is replaced by montmorillonite, added to the sodium metaaluminate solution, heated to 70°C, and stirred for 3 hours. The pH of the gel is 4.5, and the gel is formed After the glue was finished, the pH value was adjusted to 7.0, and the high-silica alumina dry glue B was prepared.

[0044] The preparation method of the catalyst is the same as in Example 1, and the catalyst C-B is prepared.

Embodiment 3

[0046] Weigh 100g of high-silica alumina dry glue A prepared in Example 1, 1.5g of carbon black, and 3.0g of scallop powder, mix them evenly, weigh 4.16g of acetic acid and add it to 95mL of distilled water, then add it to the mixed raw materials, and knead , extruded, then dried at 110° C. for 4 hours, and calcined at 650° C. for 3 hours to obtain carrier C.

[0047] Weigh 37.49g of phosphoric acid, add 450mL of distilled water, then add 135.77g of molybdenum oxide and 51.02g of basic nickel carbonate in sequence, heat and stir until completely dissolved, then dilute the solution to 500mL with distilled water to obtain solution L-2. Carrier C was saturated and impregnated with solution L-2, dried at 110°C for 2 hours, and calcined at 550°C for 5 hours to obtain catalyst C-C.

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PUM

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Abstract

The invention discloses a heavy oil hydrocracking catalyst, and a preparation method and applications thereof. According to the heavy oil hydrocracking catalyst, high-silicon aluminium oxide is taken as a carrier; VIII family metals and VIB family metals are taken as active metal ingredients. A preparation method of the high-silicon aluminium oxide carrier comprises following steps: modified clay obtained via high temperature roasting is added into an aluminum-containing alkaline liquor so as to obtain a suspension liquid; the suspension liquid and acidic silica sol are subjected to parallel flow gel forming; an alkaline solution is added for further gel forming; and the high-silicon aluminium oxide carrier is obtained via aging, filtering, and drying. The high-silicon aluminium oxide carrier is excellent in comprehensive performance such as pore structure and acidic properties; the heavy oil hydrocracking catalyst prepared by taking the high-silicon aluminium oxide carrier as a carrier is high in impurity removing rate and heavy oil conversion rate, and long in running period in heavy oil ebullated bed hydrocracking technological process.

Description

technical field [0001] The invention relates to a hydrocracking catalyst and a preparation method thereof, in particular to a heavy oil hydrocracking catalyst and a preparation method thereof, and the catalyst is especially suitable for an ebullating bed heavy oil hydrogenation process. Background technique [0002] In the present invention, heavy oil refers to heavy and poor-quality distillate oils from different sources with a distillation range >350°C, generally including atmospheric and vacuum tail oil or residue, heavy shale oil, high-temperature coal tar, and oil sand pitch wait. [0003] In recent years, crude oil has become increasingly heavy, while the market demand for middle distillate products has continued to grow, and the demand for heavy oil fuel has gradually decreased. Therefore, low-value heavy oil has been transformed into light oil products with higher added value (gasoline and middle distillate oil) ) is the target pursued by major refineries. Heavy...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19B01J23/883C10G47/20C10G45/08
Inventor 朱慧红孙素华刘杰金浩杨光蒋立敬
Owner CHINA PETROLEUM & CHEM CORP
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