Hydrodesulfurization catalyst and application thereof

A hydrodesulfurization and catalyst technology, which is applied to catalyst carriers, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc. The effect of increasing the deposition amount and prolonging the operation cycle

Active Publication Date: 2010-11-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] Aiming at the shortcomings of single function and poor metal capacity of residual oil desulfurization catalysts in the prior art, the present invention pr

Method used

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  • Hydrodesulfurization catalyst and application thereof
  • Hydrodesulfurization catalyst and application thereof
  • Hydrodesulfurization catalyst and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0051] Under stirring conditions, 375g of aluminum nitrate nonahydrate and 90g of urea were mixed and heated to 100°C, and added to a mixture of 22g of polyisobutylene maleate triethanolamine maleate and 71g of 150HVI neutral oil at the same temperature to form supersolubilizing micelles , and then reacted at 100°C for 3 hours to obtain nano-aluminum hydroxide gel. Wash three times with 200ml of distilled water, and dry at 120°C for 10 hours. Mix 70g of nano-aluminum hydroxide gel dry powder with 30g of binder pseudoboehmite evenly, mix 1.6g of dilute nitric acid (mass concentration 17%), 160g of water and 10g of cosolvent, and then add it to the nanometer hydrogen Alumina gel is dried in the mixture of powder and binder, and then molded in the extruder, and the pressure is controlled at 10MPa. The molded product was dried at 100°C for 10 hours, calcined at 240°C for 3 hours, and then calcined at 850°C for 4 hours with a heating rate of 5°C / min to obtain the alumina carrier A...

Embodiment 2

[0054] Mix 72g minus three-line dewaxed oil and 21g SP-80, heat to dissolve at 80°C, and mix well; heat 620g of aluminum nitrate nonahydrate to 80°C to melt, slowly add to the above mixture, and mix for 20 minutes to form a uniform supersolubilized colloid. 220 g of saturated ammonia water at 20° C. was added dropwise and aged for 3 hours to obtain a nano-aluminum hydroxide gel. Wash three times with 200ml of distilled water, and dry at 120°C for 10 hours. Mix 80g of nano-aluminum hydroxide gel dry powder with binder pseudo-boehmite 20g; 3.2g dilute nitric acid (mass concentration 17%), 15g water and 3g cosolvent ethanol are mixed uniformly, and then in the extruder Molding in middle, control pressure at 23MPa. The molded product was dried at 100°C for 10 hours, calcined at 240°C for 3 hours, and then calcined at 850°C for 4 hours with a heating rate of 5°C / min to obtain the alumina carrier A2 of the present invention.

[0055] The obtained alumina carrier A2 is impregnated ...

Embodiment 3

[0057] Mix 20g of the fourth-line oil, 30g of the first-line oil, 24.45g of the second-line wax paste, and 15.8g of SP-80, heat to dissolve at 100°C, and mix well; heat 750g of aluminum nitrate nonahydrate to 100°C to melt, and slowly add it to the above mixture , mixed for 30 minutes to form a uniform supersolubilized colloid, then dropwise added 150g of sodium silicate (the weight content of silicon dioxide was 30%), and mixed uniformly. In a closed reactor, add 110g of liquid ammonia at 50°C to the supersolubilizing colloid, react at 180°C for 2 hours, wash with water until Na is less than 0.05, and dry at 100°C for 10 hours to obtain nano-silicon hydroxide-aluminum hydroxide gel glue. Subsequent steps and conditions were the same as those in Example 1 to obtain silicon-containing alumina carrier A3.

[0058] The obtained silicon-containing alumina carrier A3 is impregnated with active metals Mo and Ni, then dried at 120° C. for 3 hours, and calcined at 500° C. for 5 hours...

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Abstract

The invention discloses a hydrodesulfurization catalyst and application thereof. The catalyst has the advantages of large pore volume, large pore diameter, high porosity, reasonable pore distribution, large pores on the outer surface, and good pore penetrability. The catalyst is used for desulfurization reaction in a residual oil fixed-bed hydrogenation method, and is used for demetalization reaction in the process of desulfurization. The metal asphaltene and asphaltene micelle contained in residual oil can be dispersed into the pores of the catalyst, so the separated metals are uniformly deposited on the whole catalyst bed layer, the pore utilization ratio is improved, and long-term operation of the catalyst is kept.

Description

technical field [0001] The invention relates to a hydrogenation desulfurization catalyst and its application, in particular to a hydrodesulfurization catalyst with large pore volume, high porosity and high metal capacity and its application in residual oil hydrogenation process. Background technique [0002] As an important process in petroleum refining and synthetic ammonia production using petroleum as raw material, hydrodesulfurization has always been valued by people. However, in recent years, the quality of petroleum has become heavier and worse, while the requirements for product quality have become more stringent, and the requirements for feed materials in subsequent processes have become more and more stringent. In addition, since mankind entered the 21st century, people's awareness of environmental protection has been continuously enhanced, and environmental protection legislation has become more and more stringent. x , SO x And the restrictions on aromatics conte...

Claims

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Application Information

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IPC IPC(8): B01J35/10B01J21/04B01J32/00B01J23/883B01J23/882C10G45/04
Inventor 王鼎聪刘纪端
Owner CHINA PETROLEUM & CHEM CORP
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