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Coal tar hydrorefining catalyst and preparation method thereof

A hydrofining and catalyst technology, which is applied in the direction of catalyst carriers, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of pore volume and specific surface area reduction, and achieve the goal of increasing the content Effect

Active Publication Date: 2010-12-08
胜帮科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, for existing hydrofining catalysts, the pore volume and specific surface area of ​​hydrofining catalysts with more active components are affected to a certain extent, because when active components are loaded, the pore volume and specific surface area of ​​hydrofining catalysts The surface area has been significantly reduced, and the performance of the catalyst, especially the stability, needs to be further improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The raw material of pseudo-boehmite dry rubber powder is divided into two parts by weight 20% and 80%. The 20% is roasted at 1050°C for 2 hours, and the unfired part is mixed uniformly. The solution containing active components is added to impregnate the above mixture, and then Dry at 120°C for 2 hours, add appropriate amount of peptizer, 2% of the weight of pseudo-boehmite dry rubber powder, and 1% of the weight of pseudo-boehmite dry rubber powder. The plastic body is then extruded into a strip, and the strip is dried at 120°C for 5 hours and calcined at 450°C for 2 hours to obtain a hydrorefining catalyst.

Embodiment 2~3

[0025] The method and conditions are the same as in Example 1. The material ratio is determined according to Table 1. The proportion of pseudo-boehmite roasted at high temperature in Example 2 is 15%, and the proportion of pseudo-boehmite roasted at high temperature in Example 3 is 30 %.

Embodiment 4

[0033] For the evaluation of the catalysts of the examples and comparative examples, the raw material properties are shown in Table 2.

[0034] Table 2 Coal tar feedstock oil properties

[0035] Raw oil

[0036] The evaluation conditions are as follows: the hydrorefining catalyst of the embodiment and the comparative example is 100ml, the same protective agent is 80ml, the hydrogenation protection catalyst and the hydrorefining catalyst are layered and packed in the reactor, the reaction material first passes through the hydrogenation protection catalyst, and then The catalyst is refined by hydroprocessing. Evaluation operating parameters: reaction temperature 382℃, reaction pressure 15MPa, total volumetric space velocity of raw materials 0.6h -1 , The volume ratio of hydrogen to oil is 1000:1. The main properties of the produced oil are shown in Table 3.

[0037] Table 3 The main properties of the catalyst evaluation products of the examples and comparative examples

[0038] ...

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Abstract

The invention discloses a coal tar hydrorefining catalyst and a preparation method thereof. Alumina is used as a carrier, VIB and VIII metal elements are used as active constituents, and the content of the active constituents in the catalyst is 25%-60% by weight relative to oxides. The preparing method comprises the following steps of: taking pseudoboehmite dry gel powder used as a carrier raw material; roasting part of the pseudoboehmite dry gel powder at the temperature of 800-1200 DEG C, and uniformly mixing with the rest of unroasted pseudoboehmite dry gel powder; and mixing the mixture and the solution containing an active constituent compound, pulping, filtering, drying, crushing, forming, drying and roasting to obtain the final hydrorefining catalyst. Compared with the prior art, the catalyst has high content of active constituents, larger pore volume and specific surface, a proper amount of large pores, suitable distribution of active constituents, and high activity and good stability when used for hydrogenating and refining the coal tar.

Description

Technical field [0001] The invention relates to a hydrorefining catalyst and a preparation method thereof, in particular to a catalyst used for coal tar hydrofining and a preparation method thereof. Background technique [0002] With the rapid development of the world economy, there is an increasing demand for fuel oil products, and at the same time, the quality requirements for oil products are becoming more and more stringent. The shortage of crude oil resources in the world is imminent, and the distribution is extremely uneven, but the storage of coal is very abundant, so it is a way to use coal to produce motor fuel oil. The main technologies of coal-to-liquid include direct coal liquefaction and indirect coal liquefaction, but these technologies are costly and complex. Another technology for producing coke can produce coke while the by-product is coal tar, which is currently a widely used method. However, the further processing methods of coal tar are relatively few, the u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/888B01J23/883B01J35/10B01J32/00C10G45/08
Inventor 韩保平沈和平杨承强
Owner 胜帮科技股份有限公司
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