Ammoxidation method to manufacturing unsaturated nitrile fluid-bed catalyst

A nitrile fluidized bed and ammoxidation technology, applied in the field of fluidized bed catalysts, can solve the problem of low reaction yield of acrylonitrile catalysts, and achieve the effects of inhibiting the formation of by-products, high catalyst activity, and good technical effects

Active Publication Date: 2008-02-13
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 4 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by this invention is that the reaction yield of prior art acrylonitrile catalyst is not high in industrial installations, and gradually decreases as time prolongs, 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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Ammoxidation method to manufacturing unsaturated nitrile fluid-bed catalyst
  • Ammoxidation method to manufacturing unsaturated nitrile fluid-bed catalyst
  • Ammoxidation method to manufacturing unsaturated nitrile fluid-bed catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～11

[0045] According to the same preparation process as the comparative example, the catalyst composition was prepared according to Table 1. The finished catalysts were inspected according to the above-mentioned inspection and evaluation conditions, and the initial activity results are shown in Table 2. The 250-hour stability test results of Comparative Example 1 and Example 5 are shown in Table 3.

[0046] Table 1 Catalyst

[0047] Catalyst composition

comparative example

Mo 12 Bi 2.0 Fe 2.5 Ni 4.5 Mg 1.8 La 0.8 SM 0.2 K 0.05 Cs 0.05 Na 0.05 +50% SiO2 2

Example 1

Mo 12 Bi 1.2 Fe 2.5 Ni 4.5 co 2.0 Ce 0.8 SM 0.2 PR 0.5 K 0.03 Na 0.05 +50% SiO2 2 +10%Al 2 o 3

Example 2

Mo 12 Bi 0.5 Fe 1.8 Ni 6.0 Mg 2.5 La 0.8 Ge 0.2 K 0.1 Cs 0.05 Na 0.04 +30% SiO2 2 +20%Al 2 o 3

Example 3

Mo 12 Bi 0.2 Fe 2.0 Ni 6.8 Mg 0.8 SM 0.6 Cs 0.05 Ge 0.5 +52% SiO2 2 ...

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 present invention relates to a fluidized bed catalyst of unsaturated nitrile which is produced by an ammoxidation. The present invention mainly solves the problems in the prior art that a yield of an acrylonitrile catalyst in the reaction of the industrial device is not high, and the yield is gradually reduced with the prolonged time; the by-product s of CO2, CO and HCN are increased; the stability of the catalyst is not good enough. The present invention solves the problems well by a technical proposal that a catalyst carrier is selected from SiO2 or Al2O3a or a mixture of SiO2 and Al2O3, and the catalyst contains active components, the general formula of which is as follows: in the formula of Mo12BiaFebNicXdYeZfQgOx, the X is selected from at least one of Mg, Co, Ca, Be, Cu, Zn, Pb, Mn or Te; the Y is selected from at least one of La, Ce or Sm; the Z is selected from at least one of K, Rb, Na, Li or Cs; the Q is selected from at least one of Ga, Ge or Pr. The present invention can be used for the industrial production of acrylonitrile which is produced by a propylene ammoxidation.

Description

technical field [0001] The invention relates to a fluidized bed catalyst for preparing unsaturated nitrile by ammoxidation, in particular to a fluidized bed catalyst for preparing acrylonitrile and butenenitrile by ammoxidation of propylene and butene. Background technique [0002] The ammoxidation of olefins to prepare α and β unsaturated nitriles was developed by BP in the 1960s. The core technology of this process is to use a catalyst whose active components contain Mo and Bi. After continuous improvement, the Mo-Bi series catalyst is very mature at present, and the process of preparing acrylonitrile by ammoxidation of propylene has been widely used in industry. In the past, the improvement of the catalyst was mainly carried out from the aspects of the activity and stability of the catalyst, such as adding transition metals to the active component to improve the activity and increase the yield of the product; adding rare earth elements to improve the redox ability; adding...

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): B01J23/887B01J23/83B01J23/78C07C255/08C07C253/24
CPCY02P20/52
Inventor 姜家乐杨斌宋卫林
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap