Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for recycling supported hydrogenation catalyst

A hydrogenation catalyst and supported technology, which is applied in the field of recovery and reuse of supported hydrogenation catalysts, can solve problems such as waste, and achieve the effects of reducing production costs, simple recovery methods, and reduced consumption

Active Publication Date: 2021-03-26
SINOCHEM QUANZHOU PETROCHEM CO LTD +1
View PDF10 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method can completely recycle the sieved waste catalyst, and solve the waste problem of the sieved waste catalyst as solid waste in one step.

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
  • Method for recycling supported hydrogenation catalyst
  • Method for recycling supported hydrogenation catalyst
  • Method for recycling supported hydrogenation catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Weigh 204.0 g of macroporous pseudo-boehmite, mix evenly with 15 g of sieved waste catalyst powder, slowly add 5 wt% nitric acid solution during the kneading process, continue kneading for 10 min to peptize, and extrude , to make four-leaf clover strips with a diameter of Φ1.45, let them stand at room temperature for 2 hours, dry in an oven at 120 °C for 2 hours, cool to room temperature and shape them into four-leaf clover strips with a length of 3-5mm, and sieve them through a 20-mesh standard sieve After sieving, it was placed in a muffle furnace, and fired at a rate of 10 °C / min from room temperature to 900 °C for 4 h in a nitrogen atmosphere, and then naturally cooled to room temperature to obtain the blended carrier S1.

[0025] Weigh 18 g of concentrated phosphoric acid (85wt%), dissolve it in 50 g of deionized water, mix it with 34 g of molybdenum oxide and 12 g of basic nickel carbonate, stir and reflux at 90 °C and 300 r / min until completely dissolved, and prep...

Embodiment 2

[0028] Weigh 204.0 g of macroporous pseudo-boehmite, mix evenly with 45 g of sieved waste catalyst powder, slowly add 5 wt% nitric acid solution during the kneading process, continue kneading for 10 min to peptize, and extrude , to make four-leaf clover strips with a diameter of Φ1.45, let them stand at room temperature for 2 hours, dry in an oven at 120 °C for 2 hours, cool to room temperature and shape them into four-leaf clover strips with a length of 3-5mm, and sieve them through a 20-mesh standard sieve After sieving, it was placed in a muffle furnace, and fired at a rate of 10 °C / min from room temperature to 900 °C for 4 h under a nitrogen atmosphere, and then naturally cooled to room temperature to obtain the blended carrier S2.

[0029] Weigh 100 g of blended carrier S2, impregnate an equal volume of impregnating solution A on the carrier according to its water absorption rate, dry at 120 °C for 4 h, and keep the temperature at 200 °C for 4 h under nitrogen atmosphere t...

Embodiment 3

[0031] Weigh 204.0 g of macroporous pseudo-boehmite, mix evenly with 75 g of sieved waste catalyst powder, slowly add 5 wt% nitric acid solution during the kneading process, continue kneading for 10 min to peptize, and extrude , to make four-leaf clover strips with a diameter of Φ1.45, let them stand at room temperature for 2 hours, dry in an oven at 120 °C for 2 hours, cool to room temperature and shape them into four-leaf clover strips with a length of 3-5mm, and sieve them through a 20-mesh standard sieve After sieving, it was placed in a muffle furnace, and was roasted at a rate of 10 °C / min from room temperature to 900 °C for 4 h under a nitrogen atmosphere, and then naturally cooled to room temperature to obtain the blended carrier S3.

[0032] Weigh 100 g of blended carrier S3, impregnate an equal volume of impregnation solution A on the carrier according to its water absorption rate, dry at 120 °C for 4 h, and keep the temperature at 200 °C for 4 h under nitrogen atmosp...

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

PropertyMeasurementUnit
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a method for recycling a supported hydrogenation catalyst, and belongs to the field of catalyst recycling. An inactivated hydrogenation catalyst is regenerated and sieved, andsieved small particles and powder are treated as solid garbage, so that the environment is polluted, and resource waste is caused. According to the preparation method, the screened waste catalyst is crushed to 50 microns or below, then the crushed waste catalyst is added into a kneading process of carrier preparation according to a certain proportion, the blended carrier is prepared through extrusion molding, drying and roasting in an inert gas atmosphere, interaction between metal carriers is weakened by carbon on the waste catalyst, and an active component impregnation liquid is supplementedfor loading, so that the prepared catalyst has relatively high hydrodesulfurization activity. According to the method, the waste catalyst can be completely recycled, and the waste problem of treatingthe waste catalyst as solid garbage in the past is solved in one step.

Description

technical field [0001] The invention belongs to the technical field of hydrogenation catalyst recovery, and in particular relates to a method for recovery and reuse of a loaded hydrogenation catalyst. Background technique [0002] Hydrogenation catalysts are the most important catalysts in petroleum processing, generally including hydrofining, hydrotreating and hydrocracking catalysts. Hydrogenation catalysts for industrial applications generally use VIB group metals or VIB group and VIIIB group binary or ternary metal systems as active centers, alumina or alumina and other metal oxides (such as titanium oxide, zirconium oxide, silicon oxide, inorganic A supported hydrogenation catalyst prepared by impregnating the composite oxide doped with one or more components of shaped silica-alumina, molecular sieve, zeolite, etc.) as a carrier. Fresh catalysts are activated by sulfidation, and can form type I or type II active centers according to different preparation conditions. T...

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 Applications(China)
IPC IPC(8): B01J23/883B01J32/00B01J35/10B01J37/02B01J38/00C10G45/04C10G45/08
CPCB01J37/0201B01J38/00B01J23/883C10G45/08C10G45/04B01J35/613B01J35/635B01J35/647B01J35/615Y02P20/584
Inventor 路蒙蒙刘杰王美玲原全太
Owner SINOCHEM QUANZHOU PETROCHEM CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com