Unlock instant, AI-driven research and patent intelligence for your innovation.

A kind of completely deactivated hydrocracking catalyst recovery and reuse method

A hydrocracking and catalyst technology, applied in the direction of catalyst regeneration/reactivation, physical/chemical process catalyst, molecular sieve catalyst, etc., can solve the problems of high pollution and low recovery rate, and achieve simple process, environmental protection and recycling. Effect

Active Publication Date: 2017-05-17
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the problems of high pollution and low recycling rate in the treatment process of conventional waste hydrocracking catalysts, the present invention provides a method for efficient recycling of waste hydrocracking catalysts

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • A kind of completely deactivated hydrocracking catalyst recovery and reuse method
  • A kind of completely deactivated hydrocracking catalyst recovery and reuse method
  • A kind of completely deactivated hydrocracking catalyst recovery and reuse method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take the FC-12 flexible hydrocracking catalyst (regenerated twice, with a total service life of 9 years) that has completed the industrial operation life cycle, grind it into powder, and sieve it with a 200 standard sieve. Then the catalyst powder was placed in a muffle furnace, and nitrogen-oxygen mixed gas with an oxygen content of 2.5% was passed into the muffle furnace, and calcined at 460°C for 6h. Put 200g of calcined powder into a dilute nitric acid solution with a concentration of 1.0mol / L for beating at a temperature of 65°C for 60 minutes; add 200g of macroporous alumina (pore volume 0.83mL / g, specific surface area 330m 2 / g), 80g modified Y-type molecular sieve-1 (unit cell constant 2.440nm, crystallinity 90%), 90g tungstic acid, 82g nickel nitrate, 12g dimethylglyoxime, and a small amount of squid powder etc. Squeeze paste paste, extrude into a cylindrical shape with a diameter of 1.5mm. Then, it was dried at 120°C for 4 hours and calcined at 480°C for 3 ho...

Embodiment 2

[0028] The chelating agent in the example 1 is changed into dithizone, the addition is 10g, the metal component is added into the impregnation method by the kneading method, the catalyst is impregnated with the metal, dried at 120°C for 4 hours, and roasted at 480°C for 3 hours, The obtained catalyst number is LH22-2.

Embodiment 3

[0030] The catalyst molding material in the example 1 is changed to the powder after the roasting of 200g certain high and medium type hydrocracking catalyst D-39, 48g modified Y molecular sieve-2 (unit cell constant 24.30, crystallinity 95%), 160g amorphous silicon aluminum ( The silica content is 45%, the pore volume is 0.76mL / g, and the specific surface area is 291m 2 / g), 82g of macroporous alumina, 90g of tungstic acid, 82g of nickel nitrate, 10g of acetylacetone added, other preparation methods are the same as in Example 1, and the obtained catalyst number is RD39-1.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a process for treating a waste hydrocracking catalyst. A method for the process includes the following steps: (1) smashing and sieving the industrial waste hydrocracking catalyst to obtain powder, and then roasting the powder in an environment with an oxygen volume content of 1-5% and a temperature of 300-600 DEG C for 1-8 hours; (2) adding the powder obtained in step (1) into diluted acid with a concentration of 0.1-2.0 mol / L according to a solid-to-liquid ratio of 1:2 to 1:4 and mashing the mixture at a temperature of 40-80 DEG C for 30-240 minutes; (3) adding hydrocracking catalyst new constituents and a chelating agent solution to the slurry obtained in step (2), forming, drying and roasting to prepare the hydrocracking catalyst finished product. The method is simple in technological process without using raw materials with high pollution and treating processes with high consumption, realizes the recycling of the hydrocracking catalyst in a green and environment-friendly manner, and meets the requirement of social development in the further.

Description

technical field [0001] The invention relates to a method for recovering and reusing completely deactivated waste hydrocracking catalysts, in particular to a method for re-preparing catalysts by adding new catalyst components to waste hydrocracking catalyst powders as raw materials, so as to realize the complete reassembly of waste hydrocracking catalysts. points for recycling. [0002] technical background [0003] Hydrocracking technology has the characteristics of strong adaptability to raw materials, great flexibility in production operations and product plans, and good product quality. It can directly convert various heavy and low-quality feedstocks into high-quality jet fuel, diesel, and lubricating oil base materials that are urgently needed by the market. As well as chemical naphtha and tail oil used for steam cracking ethylene raw materials, it has become one of the most important heavy oil deep processing techniques in modern oil refining and petrochemical industries...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/90B01J38/14B01J38/60
Inventor 杜艳泽王凤来张晓萍
Owner CHINA PETROLEUM & CHEM CORP