Preparation method of catalyst for hydrotreating of fluidized bed

A technology for hydrotreating and catalyst, applied in physical/chemical process catalysts, chemical instruments and methods, processing hydrocarbon oil, etc., can solve the problems of short catalyst service cycle, high catalyst bed pressure drop, harsh catalytic reaction conditions, etc. Achieve the effect of improving activity and high mechanical strength

Active Publication Date: 2018-12-11
BEIJING ZHONGZHI INNOVATION SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The fixed-bed reactor is characterized by relatively stable operation and easy control, but there are the following problems in the hydroprocessing of heavy oil products in the fixed-bed process: due to heavy oil products containing more mechanical impurities, the catalytic reaction conditions will be relatively harsh ; High-nitrogen raw materials will accelerate catalyst deactivation, the catalyst service life is short, and product properties cannot be guaranteed; catalyst bed pressure drop is high
The ebullated bed hydrotreating catalysts in the prior art have the advantages of uniform particles and excellent performance, but the wear resistance of the catalyst needs to be further improved

Method used

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  • Preparation method of catalyst for hydrotreating of fluidized bed
  • Preparation method of catalyst for hydrotreating of fluidized bed
  • Preparation method of catalyst for hydrotreating of fluidized bed

Examples

Experimental program
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Effect test

Embodiment 1

[0028] Take by weighing basic ammonium aluminum carbonate 50g, be that the xylitol solution of 20wt% with mass concentration impregnates above-mentioned material 2 hours, the material after impregnating is filtered with pseudo-boehmite dry rubber powder 200g (Wenzhou Fine Crystal Alumina Co., Ltd. Produced by the company, the dry basis content of alumina is 70wt%) and 0.2g of scallop powder are mixed evenly, and an appropriate amount of aqueous solution dissolved in 3 grams of acetic acid is added to the mixture, extruded and formed, and the formed product is dried at 120°C for 8 hours.

[0029] Weigh 100 grams of the dried strip-shaped material and place it in a spray-dipping pan, spray and impregnate the above-mentioned carrier with 10 mL of sorbitol aqueous solution with a mass concentration of 15%, and dry the impregnated carrier at 120°C for 7 hours. The aluminum oxide carrier was obtained by calcining at 650° C. for 6 hours under a nitrogen atmosphere, and then at 650° C....

Embodiment 2

[0032] With embodiment 1, just the add-on of basic aluminum ammonium carbonate is 30 grams, what used when impregnating basic aluminum carbonate is the 40wt% tetrose solution of mass concentration, what used when spraying and impregnating forming carrier is that mass concentration is 20wt% mannitol solution, the amount of the solution is 20ml, the calcination temperature of the carrier under the atmosphere of nitrogen and oxygen is 700°C and the calcination time is 6 hours, and the catalyst C2 is obtained. The properties of the catalyst are shown in Table 1.

Embodiment 3

[0034]Same as Example 1, except that the add-on of ammonium basic aluminum carbonate is 40 grams. When impregnating basic ammonium aluminum carbonate, the glucose solution with a mass concentration of 30wt% is used, and the mass concentration used when spraying and impregnating the forming carrier is 10wt. % pentose solution, the consumption of solution is 15ml, and the calcination temperature of carrier under nitrogen and oxygen atmosphere is 750 ℃ ​​of calcination time and is 6 hours, makes catalyst C3, and the property of this catalyzer is shown in Table 1.

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Abstract

The invention discloses a preparation method of a catalyst for hydrotreating of a fluidized bed. The preparation method includes the following steps: (1) kneading and forming pseudo-boehmite and alkaline ammonium aluminum carbonate of a adsorption carbon precursor solution, and drying a formed product; (2) spraying the material obtained in step (1) by a solution containing carbon precursors, and drying and roasting the soaked material to obtain an alumina carrier; (3) impregnating the alumina carrier obtained in step (2) by impregnation liquid containing hydrogenation active components, and drying and roasting the alumina carrier after impregnation to obtain the catalyst for hydrotreating of the fluidized bed. The catalyst prepared by the method has higher strength and wear resistance, andis particularly applicable to the hydrotreating process of heavy-oil fluidized beds.

Description

technical field [0001] The invention relates to the field of preparation of a hydrogenation treatment catalyst, in particular to a preparation method suitable for a heavy oil fluidized bed hydrogenation treatment catalyst. Background technique [0002] In recent years, crude oil has become heavier and the market demand for middle distillate products has been increasing, and the demand for heavy oil fuel has gradually decreased. Therefore, it is the pursuit of major refineries to convert low-value heavy oil into light oil products with higher added value. The goal. The catalytic hydrogenation process usually used for heavy oil products is mainly a fixed bed hydrogenation process. The fixed-bed reactor is characterized by relatively stable operation and easy control, but the fixed-bed process for hydrotreating heavy oil has the following problems: Because the heavy oil is heavy and contains more mechanical impurities, the catalytic reaction conditions will be relatively harsh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/19C10G45/06
CPCC10G45/06B01J27/19C10G2300/201C10G2300/205C10G2300/202C10G2300/70Y02P20/52
Inventor 查春鸿贾建文赵婷
Owner BEIJING ZHONGZHI INNOVATION SCI & TECH DEV
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