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Selectivity hydrodeolefin catalyst used for continuously reforming gasoline and preparation method thereof

A technology for reforming gasoline and catalysts, applied in refining to remove heteroatoms, etc., can solve problems such as not being able to meet long-term operation and short service life of catalysts

Inactive Publication Date: 2008-09-10
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this process is that it is only suitable for reformed gasoline raw materials after removal of heavy components
Therefore, when this process is used for the hydrodeolefination of the whole fraction of reformed gasoline from the continuous reforming unit, the service life of the catalyst is short and cannot meet the needs of long-term operation

Method used

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  • Selectivity hydrodeolefin catalyst used for continuously reforming gasoline and preparation method thereof
  • Selectivity hydrodeolefin catalyst used for continuously reforming gasoline and preparation method thereof
  • Selectivity hydrodeolefin catalyst used for continuously reforming gasoline and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] With shaped alumina as a carrier, in the presence of competitive adsorbent hydrochloric acid solution, use a Pd salt solution with a content of 0.1wt% (based on dry basis alumina), and the concentration of Ma is determined according to the final content of the catalyst in different molar ratios The catalyst of the present invention can be obtained by impregnating alumina carriers of different specifications, drying at 120°C for 8-12 hours, and roasting at 500°C in air for 4-6 hours. Table 1 lists the catalysts prepared by the method of the present invention.

[0027] Catalyst prepared by the present invention in table 1

[0028]

Embodiment 2

[0030] Using the catalyst in Example 1, a test of selective hydrodeolefination of continuously reformed gasoline was carried out on a 100 ml single-tube device. The raw material is the whole distillate of reformed gasoline from a continuous reforming unit, the distillation range is 26.2-218.2°C, the content of aromatics is 60.5wt%, and the bromine value is 3640mgBr / 100g oil. The reaction conditions are pressure 2.0MPa, reaction temperature 170°C, hydrogen-oil ratio 250:1, liquid hourly volume space velocity 4hr -1 , the catalyst was reduced in hydrogen at 170°C for 8 hours, and pre-sulfurized with dimethyl disulfide as a vulcanizing agent at 170°C. The vulcanization amount was 0.5wt% of the catalyst. The results are listed in Table 2.

[0031] Table 2 Hydrogenation results of continuous reforming full distillate gasoline

[0032] catalyst

Embodiment 3

[0034] Using the catalyst E described in Example 1, a test of selective hydrodeolefination of continuously reformed gasoline was carried out on a 100 ml single-tube device. The raw material is the raw material oil in Example 2. The reaction conditions are pressure 2.0MPa, reaction temperature 170°C, hydrogen oil volume ratio 250:1, liquid hourly volume space velocity 4hr -1 . The catalyst is first reduced in hydrogen at 170°C for 8 hours. After the reduction is complete, the temperature is lowered to 60°C and then the feed is started. The reaction temperature is gradually increased by 10°C / hr each time, and then kept constant for 3 hours until the final reaction temperature reaches 170°C. , began to respond normally, and the results are listed in Table 3.

[0035] Table 3 Hydrogenation results of continuous reforming full distillate gasoline

[0036]

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PUM

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Abstract

The invention relates to a catalyst for selective hydrogenation of olefin in reformate, belonging to the improvement of a hydrofinishing catalyst of petroleum hydrocarbon products, in particular, a hydrofinishing catalyst for selective hydrogenation of olefin in reformate. The invention has the characteristics that precious metal active components on a carrier is distributed in a form of egg shell, and has the advantages that the utilization ratio of the precious metal active component is improved and the content of the precious metal active component (1 time lower than the prior technology) and the cost of the catalyst (the precious metal occupies more than 90 percent in the manufacture cost of the load-type metal catalyst) are obviously reduced on one hand, and the activity of aromatic hydrogenation is obviously reduced, the selectivity of olefin hydrogenation is improved and the loss of the aromatic hydrogenation is reduced on the other hand.

Description

technical field [0001] The invention relates to a catalyst for selective hydrogenation of gasoline for continuous reforming and a preparation method thereof. The method belongs to the improvement of hydrofinishing catalysts for petroleum hydrocarbon products, specifically, it is mainly used for selective hydrogenation of gasoline for continuous reforming. Hydrofinishing catalysts for hydrodeolefins. Background technique [0002] The main function of the catalyst for catalytic continuous reforming gasoline selective hydrodealkenization is to selectively hydrodealkene the reformed gasoline in the state of hydrogenation, and realize deep deolefination under the condition that aromatics are not saturated by hydrogenation. Hydrogen removes the olefins therein. After the naphtha fraction is catalytically reformed, the resulting oil is rich in aromatics and solvent oil fractions, and also contains a small amount of olefins. For reforming units producing chemical-grade BTX aromati...

Claims

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Application Information

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IPC IPC(8): C10G45/04
Inventor 刘晨光南军赵会吉殷长龙赵瑞玉邢金仙柳云骐
Owner BC P INC CHINA NAT PETROLEUM CORP
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