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Preparation method of hydrogenation catalyst carrier

A catalyst carrier and hydrotreating technology, applied in catalyst carriers, physical/chemical process catalysts, chemical instruments and methods, etc., can solve the problems of high cost, complicated preparation process, increase production cost, etc., and achieve low production cost, carrier Excellent performance and efficient connection effect

Inactive Publication Date: 2019-01-08
CNOOC TIANJIN CHEM RES & DESIGN INST +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method uses organic acid to replace the nitric acid used in traditional carrier processing, so that no nitrogen oxides are emitted during the carrier roasting process, which realizes the cleaning of the traditional carrier preparation method in the molding-roasting process, and solves the problem of environmental friendliness. The process is still complicated and the cost is high
[0006] The existing technology focuses on the introduction of modifiers or additives during the molding process of the carrier to adjust the physical and chemical properties of the carrier such as the pore structure and acid distribution, which increases the production cost accordingly

Method used

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  • Preparation method of hydrogenation catalyst carrier
  • Preparation method of hydrogenation catalyst carrier

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Take 600g of the pseudo-boehmite sol precursor and put it into the hopper of the kneader, add 16g of high-viscosity aluminum hydroxide dry rubber powder and knead evenly, add 16g of nano-silica, 12g of ammonium dihydrogen phosphate, 9g of citric acid, polyethylene glycol (PEG5000) 6g Continue kneading for 60 minutes until the color of the material becomes darker, and kneading can form a ball. Take the material out and extrude it in the extruder, and the appearance is a clover-shaped strip.

[0023] After the formed strips were cured at room temperature for 12 hours, they were dried at 120°C for 6 hours and calcined at 550°C for 3 hours to obtain a finished carrier, numbered ZT-A. The physical properties of the carrier are shown in Table 1.

Embodiment 2

[0025] Take 600g of the pseudo-boehmite sol precursor and put it into the hopper of the kneader, add 35g of high-viscosity aluminum hydroxide dry rubber powder and knead evenly, add 16g of titanium dioxide, 9g of oxalic acid, and 6g of soluble starch and continue kneading for 55min until the color of the material becomes darker. It can be kneaded into a ball, and the material is taken out and extruded in the extruder to form a butterfly-shaped strip.

[0026] After the formed strips were cured at room temperature for 12 hours, they were dried at 120°C for 6 hours and calcined at 550°C for 3 hours to obtain a finished carrier, numbered ZT-B. The physical properties of the carrier are shown in Table 1.

Embodiment 3

[0028] Take 600g of the pseudoboehmite sol precursor and put it into the kneader hopper, add 22g of high-viscosity aluminum hydroxide dry rubber powder and knead evenly, add 22g of zirconium oxynitrate, 21g of silica sol, 9g of tartaric acid, and 6g of polyethylene glycol (PEG10000) Continue kneading for 45 minutes, until the color of the material becomes darker, kneading can form a ball, take out the material and shape it in the tooth ball machine, and the appearance is a five-tooth ball shape.

[0029] The formed pellets were cured at room temperature for 12 hours, dried at 120°C for 4 hours, and calcined at 550°C for 3 hours to obtain the finished carrier ZT-C. The physical properties of the carrier are shown in Table 1.

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Abstract

The invention relates to a preparation method of a hydrogenation catalyst carrier. The method comprises the following steps of: adding a little high-viscosity aluminum hydroxide dry glue powder in a pseudo-boehmite gel precursor to serve as a binding agent so as to carry out uniform mixing; adding organic acid to serve as a peptizing agent; adding a high-molecular compound to serve as a pore enlarging agent; adding one or more of compounds containing Ti, Si, B, Zr, P or F to serve as a performance additive, or not adding the performance additive; and carrying out mixing and kneading in a kneading machine to obtain a plastic, taking the plastic to carry out moulding, and carrying out drying and roasting to obtain a finished carrier. Through preparing the hydrogenation catalyst carrier by adoption of the method, effective linkage between pseudo-boehmite powder production and catalyst carrier processing can be realized, the process can be simplified, the high-energy consumption step and discharge of pollutants such as wastewater and waste gas in the production process can be decreased, and damages caused to an aluminum hydroxide pore structure by intermediate steps can be avoided at the same time; and the method has the advantages of being low in processing cost, environmentally friendly and excellent in carrier performance.

Description

technical field [0001] The invention belongs to the field of petrochemical catalyst carriers, and in particular relates to a preparation method of a hydrogenation treatment catalyst carrier. Background technique [0002] In recent years, as the society's requirements for environmental protection have increased, the quality standards of clean fuels have continued to increase, prompting various refineries to continuously upgrade hydrogenation production units to meet the requirements of product quality improvement. The demand for highly active catalysts in refinery hydrogenation units is strong, which promotes the rapid development of the catalyst industry. The market competition for hydrogenation catalysts is becoming more and more fierce. This situation requires researchers to focus on improving catalysts in the process of catalyst development and improvement. In order to meet the increasingly demanding market demand, it is necessary to continuously reduce the catalyst proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J32/00B01J27/182B01J21/06B01J21/12B01J21/04B01J27/19B01J35/10C10G45/08
CPCC10G45/08B01J21/04B01J21/063B01J21/12B01J27/182B01J27/19B01J35/615B01J35/635B01J35/647
Inventor 于海斌张国辉张玉婷朱金剑张景成南军孙彦民李晓云肖寒张尚强宋国良彭雪峰姜雪丹张雪梅
Owner CNOOC TIANJIN CHEM RES & DESIGN INST
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