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Coal tar hydrocracking catalyst and preparation method thereof

A hydrocracking and catalyst technology, which is applied in the direction of physical/chemical process catalysts, molecular sieve catalysts, chemical instruments and methods, etc., can solve the problems of catalysts such as poor nitrogen resistance, and improve the hydrocracking reaction activity and impurity tolerance capacity The effect of strong and strong nitrogen resistance performance

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

CN1253859A discloses a high and medium oil type hydrocracking catalyst, the catalyst contains 4-40% Y molecular sieve and 10-50% amorphous silica-alumina and other components, because the molecular sieve of the catalyst is a nitrogen-resistant material with low crystallinity The superhydrophobic Y molecular sieve, so the catalyst is not strong against nitrogen and can only be used in the hydrocracking process with pre-refining

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] 1. Preparation of amorphous silicon aluminum Y-1. Prepare solid sodium aluminate to a concentration of 200gAl 2 o 3 / L concentrated sodium aluminate solution, then diluted to a concentration of 25gAl 2 o 3 / L sodium aluminate working solution, first add 10L containing 25gAl to the gel forming tank 2 o 3 / L sodium aluminate working solution, while passing air and passing CO with a concentration of 45v% 2 Gas, the reaction temperature is 25°C, the reaction time is 1 hour, and when the pH value reaches 12.0, the basic silicon-containing material is added according to 50% of the weight of silicon dioxide in the amorphous silicon-alumina after final roasting, and the CO containing material is continuously introduced. 2 Gas, keep the pH of the system at around 10.5, the reaction temperature is 25°C, and the reaction time is 1 hour. After the reaction is complete, stop feeding CO 2 , and then stabilized by air for 60 minutes, the slurry was filtered and washed with deion...

Embodiment 2

[0053] 1. Preparation of hydrocracking catalyst E.

[0054] Composed by catalyst weight: WO 3 22.0%, NiO 9.0%, molecular sieve content 10%, amorphous silicon aluminum content balance to prepare the catalyst.

[0055] Amorphous silica-alumina Y-1 is made into a slurry by adding water, the slurry is adjusted to pH 5.0 with nitric acid solution, added with modified Y molecular sieve A, stirred and mixed well, dried and dehydrated at 90°C for 3 hours, and then extruded , dried at 150° C. for 2 hours, and calcined at 550° C. for 3 hours to obtain a catalyst carrier. The catalyst carrier was impregnated with an equal volume of a mixed solution of ammonium metatungstate and nickel nitrate, dried at 120°C for 4 hours, and calcined at 450°C for 2 hours to obtain the final catalyst E.

[0056] 2. Preparation of hydrocracking catalyst F.

[0057] Composed by catalyst weight: WO 325.0%, NiO10.0%, molecular sieve content is 5%, amorphous silicon aluminum content is 50%, and the balance...

Embodiment 3

[0068] The evaluation of each catalyst is obtained in Example 2, and the evaluation of the catalyst adopts a single-stage once-pass hydrocracking process (unconverted tail oil is not recycled).

[0069] The raw material oil used for evaluation is the heavy fraction of coal tar, and the specific properties are shown in Table 3.

[0070] Table 3 Properties of coal tar feedstock oil

[0071] Raw oil

[0072] The evaluation conditions are: 100ml of hydrocracking catalyst, 40ml of the same protective agent and 40ml of hydrofining catalyst (the protective agent is FZC-102 protective agent developed and produced by Fushun Petrochemical Research, and the hydrofining catalyst is developed by Fushun Petrochemical Research Institute FF-26 hydrorefining catalyst produced), the reaction materials flow through the hydrogenation protection catalyst, hydrofinishing catalyst and hydrocracking catalyst in sequence. Evaluation of operating parameters: reaction temperature 390°C, react...

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Abstract

The invention relates to a coal tar hydrocracking catalyst and a preparation method thereof. The method comprises the steps of: preparing amorphous silicon aluminium into a slurry with pH value of 3.0-5.5; evenly mixing a modified Y molecular sieve solid powder and the amorphous silicon aluminum slurry; then dehydrating the mixture to prepare a shapable paste; molding, drying and roasting the paste to prepare a catalyst carrier; and finally loading and hydrogenating a metal component by an impregnation method to obtain the final hydrocracking catalyst. The amorphous silicon aluminum is prepared by a carbonization method, and the silicon needed in the reaction is introduced through an alkaline silicon-containing material. The hydrocracking catalyst produced by the method provided by the invention has high activity, high middle distillate selectivity, strong nitrogen resistance and water resistance, and can be used for hydrocracking process of coal tar.

Description

technical field [0001] The invention relates to a coal tar hydrocracking catalyst and a preparation method thereof, in particular to a coal tar hydrocracking catalyst containing amorphous silicon aluminum 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/16C10G47/20
Inventor 王小英
Owner 上海竣铭化工工程设计有限公司
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