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Coal tar hydrorefining catalyst and preparation method thereof

A technology for hydrorefining and catalyst, applied in the direction of catalyst carrier, chemical instrument and method, metal/metal oxide/metal hydroxide catalyst, etc. Effect

Active Publication Date: 2013-06-05
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 pseudo-boehmite dry rubber powder raw material is divided into two parts by weight 20% and 80%, 20% is roasted at 1050 ° C for 2 hours, mixed with the unbaked part, and the solution containing the active component is added to impregnate the above-mentioned mixed material, and then Dry at 120°C for 2 hours, add an appropriate amount of peptizer, azurite powder accounting for 2% of the weight of the pseudo-boehmite dry rubber powder, and mix evenly with carbon black accounting for 1% of the weight of the pseudo-boehmite dry rubber powder, and knead it into The plastic body is then extruded into strips, dried at 120°C for 5 hours, and calcined at 450°C for 2 hours to obtain a hydrorefining catalyst.

Embodiment 2~3

[0025] Method and condition are with embodiment 1, and material proportion is determined by table 1, and the ratio of the pseudo-boehmite of high-temperature roasting in embodiment 2 is 15%, and the ratio of the pseudo-boehmite of high-temperature roasting in embodiment 3 is 30% %.

Embodiment 4

[0033] The evaluation of embodiment and comparative example catalyst, raw material properties are shown in Table 2.

[0034] Table 2 Properties of coal tar feedstock oil

[0035] Raw oil main properties Density / g·cm -3 1.12 Distillation range / ℃ 150~600 Carbon residue, wt% 9.80 Mechanical impurities, wt% 0.22 Sulfur content / , wt% 0.35 Nitrogen content, wt% 1.10 Metal content, μg g -1 152 Oxygen content, wt% 5.30 Aromatic content, wt% 82.5

[0036] Evaluation condition is: the hydrofinishing catalyst of embodiment and comparative example is 100ml, and identical protecting agent 80ml, hydrotreating catalyst and hydrofinishing catalyst are layered and packed in the reactor, and reaction material passes through hydrotreating catalyst first, then The catalyst is refined by hydrotreating. Evaluation of operating parameters: reaction temperature 382°C, reaction pressure 15MPa, total volume space velocity of raw m...

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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 for coal tar hydrorefining 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, and the distribution is extremely uneven, while the coal reserves are very rich, so using coal to produce vehicle fuel oil is a way. The main technologies of coal-to-oil include 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 utiliz...

Claims

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Application Information

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Patent Type & Authority Patents(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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