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

Hydrogenating and pour point depressing catalyst and its preparing method

A hydrogen decondensation and catalyst technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of high preparation cost, high energy consumption, and reduced acidity of catalysts, achieving good results and reducing Energy consumption, performance improvement effect

Active Publication Date: 2008-03-19
CHINA PETROLEUM & CHEM CORP +1
View PDF6 Cites 106 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, this method uses high-temperature roasting of the catalyst carrier to reduce the acidity of the catalyst, and

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

[0030] 1. Catalyst preparation

[0031] 8.3g of ammonium metatungstate and 3.9g of nickel nitrate are mixed and ground into a powder of 160 mesh or more, and 37.3g of small pore alumina (with a specific surface area of ​​238m) with a dry basis content of 67wt% 2.g -1 , Pore volume 0.48mL·g -1 ) Mix well, add 1.5mol / L, 56mL nitric acid aqueous solution and stir to prepare a binder, and 67gHZSM-5 molecular sieve (dry basis 97wt%, manufacturer: Dajin Nankai University Catalyst Factory, SiO 2 / Al 2 O 3 Molar ratio=38) mix together, knead, extrude, dry at 130°C for 4 hours, roast at 580°C for 4 hours, immerse (preparation of impregnation solution: 15.8g nickel nitrate, 1.1g potassium nitrate dissolved in 100mL water), dry at 130°C Calcined at 580°C for 4 hours for 4 hours to obtain a catalyst. The properties are shown in Table 1.

[0032] 2. Process evaluation

[0033] Take Daqing Minian First Line (see Table 2 for the properties of raw materials) as the feedstock oil. The test was car...

Embodiment 2

[0035] 1. Catalyst preparation

[0036] 4.8g of ammonium heptamolybdate and 3.9g of nickel nitrate are mixed and ground into a powder of 160 mesh or more, and 39.6g of small pore alumina (with a specific surface area of ​​238m) with a dry basis content of 67wt% 2 ·G -1 , Pore volume 0.48mL·g -1 ) Mix well, add 1.5 mol / L, 56mL nitric acid aqueous solution and stir to prepare a binder, and 69.1g HZSM-5 molecular sieve (97wt% dry basis, manufacturer: Tianjin Nankai University Catalyst Factory, SiO 2 / Al 2 O 3 Molar ratio=38) mix together, knead, extrude, dry at 130°C for 4 hours, roast at 580°C for 4 hours, immerse (preparation of impregnation solution: 7.9g nickel nitrate, 1.1g potassium nitrate dissolved in 100mL water), dry at 130°C Calcined at 580°C for 4 hours for 4 hours to obtain a catalyst. The properties are shown in Table 1.

[0037] 2. Process evaluation

[0038] The process conditions are the same as in Example 1, and the process evaluation results are shown in Table 4.

Embodiment 3

[0040] 1. Preparation of catalyst

[0041] 7.15g of ammonium metatungstate and 5.85g of nickel nitrate were dissolved in 56mL of a 1.5 mol / L nitric acid aqueous solution, mixed with 31.3g of small-pored alumina with a dry basis content of 67wt% to prepare a binder, and 72.2g of HZSM -5 molecular sieve (97wt% on dry basis, manufacturer: Tianjin Nankai University Catalyst Factory, SiO 2 / Al 2 O 3 =38) Mix together, kneading, extruding, drying and roasting conditions are the same as in Example 1, impregnation (preparation of impregnation solution: 3.95 nickel nitrate, 9.8g LiNO 3 Dissolved in 100 mL of water), the drying and calcination conditions were the same as in Example 1, to obtain a catalyst, and its properties are shown in Table 1. The process evaluation results are shown in Table 4.

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
Solidifying pointaaaaaaaaaa
Login to View More

Abstract

The invention discloses a hydro dewaxing catalyst and the preparation method. In the method, compound with hydrogen active component is mixed with aluminum dry gel to prepare adhesive; and then the adhesive is mixed with shape-selective cracked zeolite and is pinched in shape; after drying and roasting, catalyst carrier is yielded; then the catalyst carrier is impregnated in the impregnating solution containing the rest active component and promoter; and after drying and roasting again, the catalyst of the invention is yielded. The invention is capable of taking full advantage of the alumina used as adhesive in the catalyst carrier under low hydrogen active component content conditions to prepare adhesive containing all the molybdenum and tungsten and part of the nickel, thereby keeping a certain amount of nickel oxide in the zeolite. The rest of the active metal component is distributed in the alumina, keeping the zeolite passage unobstructed with good hydro dewaxing effect and effectively improving the hydrogen addition and purification performance of the catalyst. The catalyst is especially suitable for hydro dewaxing of raw material containing wax and with high nitrogen impurity content and suitable for hydrogen addition and purification.

Description

Technical field [0001] The invention relates to a hydrogenation dewaxing catalyst and a preparation method thereof, in particular to a diesel hydrogen condensation depressing catalyst and a preparation method thereof. The catalyst is used in the hydro-pour condensation process of waxy hydrocarbon raw materials, and is particularly suitable for the hydro-pour point reduction and hydrorefining processes of wax-containing raw materials. Background technique [0002] "Hydrogen condensation reduction" means that in the presence of hydrogen, the wax-containing hydrocarbon feedstock reduces the content of wax molecules on the surface of a suitable catalyst. The principle of dewaxing is to mix the raw material with hydrogen and contact with the hydrogen depressing catalyst under certain operating conditions. The paraffins, short side chain paraffins, long side chain cycloalkanes and long side chains in the raw material The high freezing point components such as aromatics are selectively ...

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): B01J29/076B01J29/072C10G45/12C10G45/08
Inventor 高鹏孟祥兰李永泰于庆新郭晓明
Owner CHINA PETROLEUM & CHEM CORP
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