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Coal tar hydrodemetallization catalyst and preparation method thereof

A hydrodemetallization and catalyst technology, which is applied in catalyst activation/preparation, metal/metal oxide/metal hydroxide catalysts, chemical instruments and methods, etc., can solve the problem that catalyst pores cannot be fully utilized and accelerate catalyst deactivation. Speed, carrier pore distribution and dispersion, etc., to achieve the effect of shortening the operation cycle, improving the capacity of metal impurities, and reducing the utilization rate

Active Publication Date: 2016-08-03
上海竣铭化工工程设计有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large and non-concentrated particles of the physical pore-enlarging agent carbon black powder used in the carrier preparation process, the pore distribution of the carrier is dispersed and not concentrated, and the mechanical strength is poor.
More importantly, the pores of the obtained catalyst carrier are not smooth, and some of the catalyst pores cannot be fully utilized, and the metal is easy to deposit in the narrow pores during use, which will accelerate the deactivation rate of the catalyst.

Method used

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  • Coal tar hydrodemetallization catalyst and preparation method thereof
  • Coal tar hydrodemetallization catalyst and preparation method thereof
  • Coal tar hydrodemetallization catalyst and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The alumina carrier B1 is modified. The treatment process is: oxalic acid solution (pH value lower than 1) with an organic acid solution concentration of 1mol / L, the treatment time is 0.5 hours, and the treatment temperature is 40°C. The volume ratio of the dosage to the alumina carrier is 5:1. After the organic acid solution is treated, drain the organic acid solution, dry at 120°C for 3 hours, then impregnate the aluminum nitrate solution, use saturated impregnation, the concentration of the aluminum nitrate solution is 3mol / L, dry at 150°C for 3 hours, and roast at 450°C for 2 hours. hours, the modified alumina carrier A1 was obtained.

Embodiment 2

[0039] The alumina carrier B1 is modified, the treatment process is: acetic acid solution (pH value lower than 2) with an organic acid solution concentration of 3mol / L, the treatment time is 2 hours, the treatment temperature is 15°C, and the amount of the organic acid solution is The volume ratio of the volume meter to the alumina carrier is 8:1. After the organic acid solution is treated, drain the organic acid solution, dry at 120°C for 3 hours, then impregnate the aluminum nitrate solution, use saturated impregnation, the concentration of the aluminum nitrate solution is 5mol / L, dry at 150°C for 3 hours, and roast at 450°C for 2 hours. hours, the modified alumina carrier A2 was obtained.

Embodiment 3

[0041] The alumina carrier B2 is modified. The treatment process is: citric acid solution (pH value lower than 1) with an organic acid solution concentration of 2mol / L. The treatment time is 1 hour, the treatment temperature is 20°C, and the amount of organic acid solution is The volume ratio to the alumina carrier is 3:1 by volume. After the organic acid solution is treated, drain the organic acid solution, dry at 120°C for 3 hours, then impregnate the aluminum nitrate solution, use saturated impregnation, the concentration of the aluminum nitrate solution is 2mol / L, dry at 150°C for 3 hours, and roast at 450°C for 2 hours. hours, the modified alumina carrier A3 was obtained.

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Abstract

The invention discloses a coal tar hydrodemetalization catalyst and a preparation method thereof. The method comprises the steps of: (1) taking or preparing an alumina carrier; (2) treating the alumina carrier from the step (1) with an organic acid solution with pH value lower than 3; then impregnating the alumina carrier subjected to acid treatment with an aluminium nitrate solution; and drying and roasting to obtain a modified alumina carrier; and (3) loading and hydrogenating an active component by an impregnation method to obtain the coal tar hydrodemetalation catalyst. Compared with the prior art, the coal tar hydrodemetalation catalyst provided by the invention has better activity and activity stability, and longer operation cycle.

Description

technical field [0001] The invention relates to a hydrodemetallization catalyst and a preparation method thereof, in particular to a hydrodemetallization catalyst for coal tar hydrotreating and a preparation method thereof. Background technique [0002] With the rapid development of the world economy, the demand for fuel oil products is increasing, and the quality requirements for oil products are becoming more and more stringent. The shortage of crude oil resources in the world is imminent, but the coal reserves are very rich, so using coal to produce vehicle fuel oil is a way. The main technology of coal to oil includes direct liquefaction of coal and indirect liquefaction of coal, etc. But these technologies are costly and complicated. Another technology for coke production is that the by-product is coal tar while producing coke, which is a widely used method at present. However, the further processing methods of coal tar are relatively few, the utilization methods are ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J23/882B01J23/883B01J23/888B01J37/02C10G45/08
Inventor 王小英
Owner 上海竣铭化工工程设计有限公司
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