A recapitalization generating oil hydrogenation catalysts and its preparing method

A technology for reforming to generate oil and hydrogenation catalyst, which is used in metal/metal oxide/metal hydroxide catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., which can solve the problem that catalysts are difficult to meet the requirements of long-term operation. requirements, narrow operating range of hydrogenation temperature, etc., to achieve the effects of excellent olefin hydrogenation activity and selectivity, reduction of aromatics hydrogenation loss, and cheap preparation technology

Active Publication Date: 2008-04-09
CHINA NAT OFFSHORE OIL 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 the reformed oil feedstock after removal of heavy components, and the hydrogenation temperature operating range is narrow
Therefore, when this process is used for the hydrodeolefination of the whole fraction of the reformed oil from the continuous reforming unit, it is difficult to meet the requirements of long-term operation when the catalyst is used.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] With the formed alumina as the carrier, in the presence of competitive adsorbent hydrochloric acid solution, use the Pd salt solution with a content of 0.1wt% (based on dry basis alumina), and the concentration of Ma and Mb according to the final content of the catalyst in different molar ratios To confirm, the catalyst of the present invention can be prepared by impregnating alumina carriers of different specifications, then drying at 120°C for 8-12 hours, and calcining at 500°C in air for 4-6 hours. Table 1 lists several catalysts prepared by the method of the present invention.

[0032] Catalyst prepared by the present invention in table 1

[0033] catalyst

Embodiment 2

[0035] Using the catalyst in Example 1, a test of selective hydrodeolefination of oil produced by catalytic reforming was carried out on a 100 ml single-tube device. The raw material is the whole distillate of reformed oil from the second-generation continuous reforming unit, the distillation range is 26.2-218.2°C, the aromatics content 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.

[0036] Table 2 Hydrogenation results of the second-generation continuous reforming whole distillate oil

[0037] catalyst

Embodiment 3

[0039] Using the catalyst E described in Example 1, a semi-regenerative fixed-bed reformer was used in a 100 ml single-tube device to reform the product oil to selectively hydrodeolefin test. The raw material is the whole distillate of semi-regenerated reformed oil, the distillation range is 46.8-167.5°C, the content of aromatics is 53.5wt%, and the bromine value is 1770mgBr / 100g oil. The reaction conditions are pressure 2.0MPa, reaction temperature 120°C, hydrogen-oil ratio 200:1, 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, dimethyl disulfide is used as a vulcanizing agent at 170°C for pre-sulfurization. The amount of vulcanization is 0.5wt% of the catalyst. Feed, start catalytic hydrogenation reaction, the results are shown in Table 3.

[0040] Table 3 Hydrogenation results of semi-regenerative reforming oil

[0041] catalyst

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Abstract

The invention discloses reformate hydrogenation catalyst and the production method thereof. The invention is characterized in that the catalyst consists of a main active component, auxiliary agent, and carriers, the structural formula is Pd-Ma (Mb)/carriers; the main active component is a double noble metal component Pd, and the content is 0.01 to 0.5 wt percent; Ma is one of Au, Ag, Pt, Rh, and Ir, and the content is 0.01 to 0.5 wt percent; Mb is one of Sn, Pb, Sb, and Bi, and the content is 0.2 to 1.0 wt percent; the rest are carriers; inorganic acid or organic acid is taken as competitive adsorption auxiliary agent to achieve that the active component presents the distribution of an eggshell-shaped shallow layer, the active metal and the auxiliary agent are loaded by a distribution impregnation method or a co-impregnation method, and then the hydrogenation catalyst is produced through drying and roasting.

Description

technical field [0001] The invention belongs to the hydrofining technology of petroleum hydrocarbon products, and is a hydrogenation catalyst for reformed oil and its preparation method. More specifically, it relates to a hydrogenation catalyst mainly used for the selective hydrodeolefination of reformed oil. Hydrofining catalyst and preparation method thereof. Background technique [0002] The main function of the catalytic reforming oil selective hydrodealkene catalyst is to selectively hydrodealkene the reformed oil in the hydrogenation state, and to achieve deep Hydrogenation removes the olefins in it. [0003] 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 aromatics, they all face the problem of how to remove olefins from reformed oil. Because in order to produce qualified chemical raw material aromatic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/62B01J23/66C10G45/10
Inventor 南军于海斌石芳隋芝宇张雪梅
Owner CHINA NAT OFFSHORE OIL CORP
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