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Post-treatment method of supported alumina catalyst and obtained catalyst

A catalyst and alumina technology, applied in the direction of heterogeneous catalyst chemical elements, physical/chemical process catalysts, metal/metal oxide/metal hydroxide catalysts, etc., to achieve improved hydrotreating activity, improved dispersion performance, and surface The effect of property improvement

Inactive Publication Date: 2019-02-15
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0019] The main purpose of the present invention is to provide a post-treatment method of supported alumina catalyst and the resulting catalyst, to overcome the impregnation effect and active component clustering effect caused by the impregnation of the catalyst in the prior art

Method used

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  • Post-treatment method of supported alumina catalyst and obtained catalyst
  • Post-treatment method of supported alumina catalyst and obtained catalyst
  • Post-treatment method of supported alumina catalyst and obtained catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0059] The component characterization of six kinds of hydrogenation catalysts based on alumina carrier was carried out. The characterization method was the qualitative and semi-quantitative analysis of elements by XRF analysis. The spectrometer used was the Japanese Rigaku RIX-3000 spectrometer. WMoO3 Indicates the content of molybdenum trioxide based on the total mass of the hydrogenation catalyst, and other items have similar meanings.

[0060] Table 1 Characterization data of six kinds of hydrogenation catalysts based on alumina carrier

[0061]

Embodiment 2

[0063] The analysis results of the six catalysts were counted and analyzed, and the specific results are shown in Table 2.

[0064] Table 2 Analysis data of 6 kinds of hydrogenation catalysts based on alumina support

[0065]

[0066] Note: when W MoO3 When the value of is 0, there is no need to add phosphorus-containing substances in the post-treatment impregnation solution; IVB When the value of is 0, the ∑ 活性组分 / W IVB The value of is less than or equal to 2.

Embodiment 3

[0068] Catalyst-1 post-treatment impregnation solution preparation, according to the analysis and statistical results of Example 1 and Example 2, citric acid and ethylenediaminetetraacetic acid are selected as organic acids to be added in the post-treatment impregnation solution, and the pH regulator is ammonia water , wherein the mass ratio of citric acid to ethylenediaminetetraacetic acid is 2:1, according to the preparation principle of post-treatment impregnating solution, the addition amount of organic acid is 1.2 times of the active component (that is, the total mass of the supported alumina catalyst is Standard, the addition amount of organic acid is 32.04wt%) Adopt the mode of equal volume impregnation to carry out impregnation. The water absorption rate of Catalyst-1 was determined to be 45.5%, and the concentration of the post-treatment impregnation solution was calculated to be 0.0989 g / ml, and the pH of the post-treatment impregnation solution was adjusted to 4.0 wi...

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Abstract

The invention discloses a post-treatment method of a supported alumina catalyst and an obtained catalyst. The supported alumina catalyst comprises an active component, an auxiliary agent and alumina,wherein the active component comprises one or more of molybdenum trioxide, tungsten trioxide, cobalt oxide and nickel oxide; and the auxiliary agent comprises one or more of phosphorus pentoxide, silicon dioxide and oxides of group IVB metals. The post-treatment method comprises the following steps: impregnating the supported alumina catalyst in post-treatment impregnation liquid, and then carrying out drying treatment, wherein the post-treatment impregnation liquid comprises one or more of the groups composed of organic acid substances, phosphorus-containing compounds and pH value regulators.The post-treatment impregnation solution provided by the invention is selected from one or more of organic acid substances, phosphorus-containing substances and pH value adjusting substances according to analysis of types and contents of active components and additives of the catalyst, and different contents are limited respectively. The hydrogenation activity of the post-treated catalyst is improved by 10-30%.

Description

technical field [0001] The invention relates to a post-treatment method for improving the activity of an alumina-supported hydrotreating catalyst and the obtained catalyst. The method can be used to improve the activity of the alumina-supported hydrotreating catalyst. Background technique [0002] With the increasingly stringent gasoline and diesel quality standards implemented in my country and the increasingly stringent environmental protection regulations, hydrotreating units in refineries have become very popular. Hydrotreating catalyst is the core of hydrotreating unit, and its activity directly affects the product quality of hydrotreating unit, and also affects the energy and material consumption of the refinery. At present, the development of highly active hydrotreating catalysts has become a hot spot in the industry. The development of highly active hydrotreating catalysts mainly includes carrier preparation and active phase research. Through literature research and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J27/19C10G45/04C10G45/08
CPCB01J23/002B01J23/888B01J27/19B01J2523/00C10G45/04C10G45/08C10G2300/202B01J2523/847B01J2523/69B01J2523/41
Inventor 马宝利徐铁钢徐伟池王丹宋金鹤于春梅张文成孙发民杨晓东谭明伟温广明郭金涛张铁珍赵野李瑞峰王刚张全国郭立艳韩志波
Owner PETROCHINA CO LTD
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