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

Catalyst for hydrogenation of waste solvent in production of anti-aging agent 6PPD and application of catalyst

A technology for catalysts and waste solvents, applied in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, organic chemistry, etc., can solve the problem of generating more impurities, low alcohol content, and conversion of dehydrogenation catalysts Low efficiency and other problems, to achieve the effect of solving the impact of product quality, less types of impurities, and enriching the product chain

Pending Publication Date: 2021-02-02
SINOPEC NANJING RES INST OF CHEM IND CO LTD +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] At present, there are two ways to deal with by-products in the production process of anti-aging agent 6PPD. One is to sell them directly as by-products, but due to the low alcohol content, the scope of application is limited; the other is to build a supporting dehydrogenation device. After catalytic dehydrogenation Reuse as raw material MIBK, but due to the low conversion rate of the dehydrogenation catalyst and many other impurities generated during the dehydrogenation process, the product quality will be affected when it is reused as a raw material

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] A nickel / cobalt / aluminum catalyst was prepared with alumina as a carrier. Based on the total weight of the catalyst, the nickel content in the catalyst was 11.0%, the cobalt content was 5.4%, and the aluminum content was 10.0%. Pack the nickel / cobalt / aluminum catalyst in the fixed-bed reactor. During the production of anti-aging agent 6PPD, the waste solvent passes through the dehydration tower and the light component removal tower, and the overhead fraction enters the hydrogenation reactor. The reaction temperature is 145°C and the system pressure is 1.5MPa, liquid space velocity 0.10h -1 , the hydrogenation product enters the product tank after condensation. Analyzing the product composition of the product tank, the content of MIBC is 95.2%, and the content of MIBK is 4.3%.

Embodiment 2

[0026] A nickel / manganese / aluminum catalyst was prepared with alumina as a carrier. Based on the total weight of the catalyst, the nickel content in the catalyst was 10.0%, the manganese content was 2.5%, and the aluminum content was 13.7%. The nickel / manganese / aluminum catalyst is packed in the fixed bed reactor, and the waste solvent in the production process of anti-aging agent 6PPD passes through the dehydration tower and the light component removal tower, and the overhead fraction enters the hydrogenation reactor. The reaction temperature is 185°C and the system pressure is 2.5MPa, liquid space velocity 0.15h -1 , the hydrogenation product enters the product tank after condensation. Analyzing the product composition of the product tank, the content of MIBC is 98.2%, and the content of MIBK is 1.4%.

Embodiment 3

[0028] A nickel / zinc catalyst was prepared using silicon oxide as a carrier. Based on the total weight of the catalyst, the nickel content in the catalyst was 40.0%, and the zinc content in the catalyst was 28.0%. Pack the nickel / zinc catalyst in the fixed bed reactor, the waste solvent in the production process of anti-aging agent 6PPD passes through the dehydration tower and light component removal tower, and the overhead fraction enters the hydrogenation reactor, the reaction temperature is 215°C, and the system pressure is 3.5MPa , liquid space velocity 0.12h -1 , the hydrogenation product enters the product tank after condensation. The product composition of the product tank was analyzed, and the content of MIBC was 92.6%, and the content of MIBK was 6.9%.

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 provides a catalyst for hydrogenation of a waste solvent in the production process of an anti-aging agent 6PPD and application of the catalyst. The catalyst is composed of an active component with a main catalytic effect, an active component with an auxiliary catalytic effect and a carrier. A waste solvent enters a hydrogenation reaction device after dehydration and light component removal, and an MIBC product is prepared after catalytic hydrogenation. According to the method, the MIBC is prepared by hydrogenating the waste solvent (ketone-alcohol mixture) in the production of the anti-aging agent 6PPD, so that the product purity is high, the impurity types are few, the product chain is enriched, and the influence of byproduct recycling on the product quality can be effectively solved.

Description

technical field [0001] The invention belongs to the field of comprehensive utilization of production waste liquid, and in particular relates to a catalyst used for hydrogenation of waste solvent in the production of antioxidant 6PPD and an application method thereof. Background technique [0002] Rubber and its products will gradually age during use. In order to prolong its service life and delay the aging process, antioxidants are usually added to rubber products. With the development of the tire and rubber industry and the increasingly stringent requirements for environmental protection, the varieties of rubber antioxidants gradually tend to be p-phenylenediamine products with anti-ozonation function and quinoline anti-aging agents that can replace naphthylamine products with excellent anti-oxidation properties. . [0003] At present, the anti-aging agent 6PPD accounts for the largest proportion of p-phenylenediamine anti-aging agents, which has the characteristics of hig...

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
IPC IPC(8): B01J23/755B01J23/889B01J23/80B01J23/847B01J23/89B01J23/652B01J23/44B01J23/42B01J23/78B01J23/887C07C29/145C07C31/125
CPCB01J23/755B01J23/80B01J23/8892B01J23/8472B01J23/8913B01J23/6522B01J23/44B01J23/42B01J23/78B01J23/8877C07C29/145C07C31/125
Inventor 张伟刘卓黄伟管庆宝
Owner SINOPEC NANJING RES INST OF CHEM IND 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