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Preparation method of residual oil hydrogenation monolithic catalyst

A monolithic catalyst and residual oil hydrogenation technology, which is applied in the chemical industry, can solve the problems of macromolecular colloids and asphaltene micelles passing through the pores, diffusion resistance and high reaction pressure, etc., to shorten the downtime period and load the amount of active metals The effect of high and high hydrogenation activity

Active Publication Date: 2015-04-08
LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The present invention aims at the problems existing in the above-mentioned prior art, and provides a method for preparing a monolithic catalyst for residual oil hydrogenation, which solves the difficulties of macromolecular colloids and asphaltene micelles in residual oil passing through pores, diffusion resistance and Response to stressful issues

Method used

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  • Preparation method of residual oil hydrogenation monolithic catalyst
  • Preparation method of residual oil hydrogenation monolithic catalyst
  • Preparation method of residual oil hydrogenation monolithic catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] ①Mix 10g of SB powder and alumina powder evenly according to the mass ratio of 1:6, divide it into 5 parts evenly, and put 0.2g of crushed superfine fiber in the mold alternately and evenly, and the fiber is crushed into 0.5-1.5mm length Polyester fiber, the monofilament linear density of polyester fiber is 0.1-0.6dtex, each layer is evenly sprayed with a concentration of 6mol L -1 dilute nitric acid, shared 2g, and calcined at 550°C for 12h after tableting to obtain the carrier of the monolithic catalyst;

[0018] ② Immerse the prepared carrier with 30% Tween-80 aqueous solution for 1 hour, filter off excess solution, and dry the impregnated carrier at 110° C. for 4 hours. Using the method of multiple saturation impregnation in the solution containing 1.5mol·L -1 Molybdenum and 0.43mol L -1 Nickel is immersed in the molybdenum-nickel-phosphorus solution prepared with a mass ratio of 4:1 for 1h, and the oxide (MoO 3 +NiO) contains 30% by weight, and the content is ba...

Embodiment 2

[0021] Same as in Example 1, except that the amount of polyester fiber is 0.3 g, and the amount of dilute nitric acid is 3 g, to obtain a monolithic catalyst carrier. The mass concentration of Tween-80 used is 40% aqueous solution for immersion for 1 h, excess solution is filtered off, and the impregnated carrier is dried at 110° C. for 4 h. Use 1.5mol·L -1 Molybdenum and 0.43mol L -1 The molybdenum-nickel-phosphorus solution prepared by nickel at a mass ratio of 5:1 was impregnated with the carrier for 1 h, and the oxide (MoO 3 +NiO) containing 30% by weight, dried in a fume hood, then dried at 110°C for 6h, and then calcined at 550°C for 12h to obtain catalyst MNP2.

Embodiment 3

[0023] Same as Example 1, except that the amount of polyester fiber is 0.5 g, and the amount of dilute nitric acid is 3 g, so as to obtain the monolithic catalyst carrier. The mass concentration of Tween-80 used is 50% aqueous solution for 1 h immersion, excess solution is filtered off, and the impregnated carrier is dried at 110° C. for 4 h. Use 1.5mol·L -1 Molybdenum and 0.43mol L -1 The nickel was impregnated in the molybdenum-nickel-phosphorus solution prepared with a mass ratio of 6:1. After the carrier was impregnated for 1 h, the oxide (MoO 3 +NiO) containing 30% by weight, dried in a fume hood, then dried at 110°C for 6h, and then calcined at 600°C for 12h to obtain catalyst MNP3.

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Abstract

The invention discloses a preparation method of a residual oil hydrogenation monolithic catalyst. The preparation method comprises the following steps of: (1) mixing and tabletting mixed powder with different usage amounts with dilute nitric acid and ultrafine fiber to prepare a monolithic catalyst carrier with a three-dimensional penetrating pore passage; (2) immersing the monolithic catalyst carrier in a tween-80 solution at certain concentration, airing, drying, calcining, immersing the treated monolithic catalyst carrier in a molybdenum-nickel-phosphorus solution with different metered molybdenum-nickel proportions, and airing, drying and calcining to prepare the residual oil hydrogenation monolithic catalyst. The preparation method disclosed by the invention can be used for synthesizing the catalyst in the presence of a structureless carrier, is favorable to the penetration of a gum asphaltic micelle contained in residual oil by introducing the micron-sized pore passage through the addition of the fiber, can be used for reducing the diffusion resistance to inhibit coking, solving the problem of catalyst deactivation caused by reaction coking, shortening the shutdown period and reducing the industrial cost, is large in loaded active metal quantity and relatively high in hydrogenation activity, and is pollution-free on the environment, green and environmental-friendly by introducing no other impurities.

Description

technical field [0001] The invention relates to a method for preparing a catalyst, in particular to a method for preparing a monolithic catalyst for residual oil hydrogenation, and belongs to the technical field of chemical industry. Background technique [0002] In order to improve the utilization rate of oil, save oil resources, and produce cleaner oil products, the deep processing of heavy oil has become an important topic all over the world. As crude oil becomes heavier and heavier, the demand for light oil products increases, and environmental protection laws and regulations on the content of sulfur, nitrogen, carbon residues, aromatics, etc. in oil products are becoming increasingly stringent. It is the residual oil hydrotreating that puts forward stricter technical requirements. In the residual oil hydrotreating process, the residual oil hydrogenation catalyst plays a vital role. Residue hydrotreating catalyst determines the process of residue hydrogenation process....

Claims

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Application Information

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IPC IPC(8): B01J23/883B01J35/10C10G45/08
Inventor 丁巍李晓言赵德智王鼎聪戴咏川宋官龙张强
Owner LIAONING UNIVERSITY OF PETROLEUM AND CHEMICAL TECHNOLOGY
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