Fluid bed catalyst for acrylonitrile production

A technology of fluidized bed catalyst and acrylonitrile, which is applied in the direction of physical/chemical process catalyst, metal/metal oxide/metal hydroxide catalyst, bulk chemical production, etc. It can solve the problem of low acrylonitrile load and low reaction pressure, etc. problems, to achieve the effect of improving activity and stability

Inactive Publication Date: 2008-03-26
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0014] The technical problem to be solved by the present invention is that the existing technology has the problems of

Method used

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  • Fluid bed catalyst for acrylonitrile production
  • Fluid bed catalyst for acrylonitrile production
  • Fluid bed catalyst for acrylonitrile production

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] 7.7 grams of cesium nitrate, 4.56 grams of rubidium nitrate and 2.69 grams of potassium hydroxide are added to 20 grams of water and heated to dissolve to obtain material (A); 53.6 grams of ammonium tungstate and 841.5 grams of ammonium molybdate are dissolved in 690 grams of 60~90℃ heat In water, get material (B); mix 289.0 g of bismuth nitrate, 254.6 g of magnesium nitrate, 525.1 g of nickel nitrate, 486.4 g of iron nitrate and 11.6 g of lanthanum nitrate, add 280 g of water, and heat to dissolve as material (C), weigh Dissolve 40.3 grams of chromium trioxide in 50 grams of water to obtain material (D). Weigh 17.2 grams of cerium nitrate and dissolve in 20 grams of water and heat to dissolve to obtain material (E).

[0053] Mix material (A) with 2475 grams of silica sol with a weight concentration of 40%, add materials (B), (C), (D) and (E) in sequence with stirring, and then add 140.7 grams of 50% manganese nitrate solution , After fully stirring, the slurry is obtained....

Embodiment 2～6 and comparative example 1～4

[0056] The catalysts with different active compositions in the following table were prepared by basically the same method as in Example 1, and the prepared catalyst was used to carry out the ammoxidation of propylene to acrylonitrile under the following reaction conditions. The results are shown in Table 1.

[0057] The reaction conditions of the above examples and comparative examples are:

[0058] φ38 mm fluidized bed reactor

[0059] Reaction temperature 440℃

[0060] Reaction pressure 0.14MPa

[0061] Catalyst loading amount 400g

[0062] Catalyst propylene load (WWH) 0.11 hour -1

[0063] Raw material ratio (mole) C 3 ＝ / NH 3 / Air=1 / 1.2 / 9.8

[0064] Table 1

[0065] Example

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PUM

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Abstract

The present invention relates to a fluidized bed catalyst for producing acrylonitrile. It is characterized by that said catalyst uses silicone dioxide as carrier, and contains the following active components: A, B, C, K, Mg, Mn, I, Fe, Bi and Mo, in which A is at least one kind selected from Li, Na, Rb, Cs or Tl, B is at least one kind selected from La, Ce, Nd, Pr or Eu and C is at least one kind selected from Cr or W. Said catalyst can be used in industrial production of acrylonitrile under the condition of high reaction pressure and high propene load.

Description

Technical field [0001] The invention relates to a fluidized bed catalyst for the production of acrylonitrile, in particular to a fluidized bed catalyst for the production of acrylonitrile by ammoxidation of propylene. Background technique [0002] Acrylonitrile is an important organic chemical raw material. It is produced by ammoxidation of propylene. In order to obtain a fluidized bed catalyst with high activity and high selectivity, a series of improvements have been made through continuous exploration. These improvements mostly involve the active composition of the catalyst, and focus on the combination of active components of the catalyst to improve the activity and selectivity of the catalyst, so as to increase the single-pass yield of acrylonitrile and increase the production load. [0003] After more than 40 years of development for the production of acrylonitrile by ammoxidation method, the production capacity of the factory has been close to balance with market demand. A...

Claims

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Application Information

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IPC IPC(8): B01J23/887B01J23/883B01J23/881B01J21/08C07C253/26C07C255/08
CPCY02P20/52
Inventor 陶跃武奚美珍吴粮华
Owner CHINA PETROLEUM & CHEM CORP
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