Cytalyst for reformed formation oil selective hydrogen removing olefin

A technology for producing oil and catalyst from reforming, which is applied in the field of catalyst for selective hydrodeolefination of oil produced by reforming gasoline fractions

Inactive Publication Date: 2003-10-15
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the pressure increases, the temperature at which hydrogenation activity for aromatics begins to decrease, and the actual possible application of hydrofining pressure is generally 1.0-3.0 MPa, so it begins

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] In the presence of competing adsorbent hydrochloric acid solution, use platinum or palladium and a salt solution of platinum and palladium with a content of 0.30w% (based on dry base alumina), and its concentration is determined (50g) according to the final content of the catalyst. The catalyst of the present invention can be obtained by drying the alumina carrier of the specification for 8-10 hours at 120°C and calcining in air at 450°C for 4-6 hours. Table 1 lists the catalysts prepared by the method of the present invention.

[0021] catalytic

Embodiment 2

[0023] Using the catalyst in Example 1, a test of selective hydrodeolefination of reformed oil was carried out on a 100 ml single-tube device. The raw material is semi-regenerated reformed oil with a distillation range of 48.8-167.7°C, an aromatics content of 60.5w%, and a bromine index of 1770mgBr / 100g oil. The reaction conditions are pressure 2.0MPa, temperature 170°C, hydrogen-to-oil ratio 250, the catalyst is reduced in hydrogen at 200°C for 8 hours, and presulfurized with dimethyl disulfide at 170°C. The amount of sulfurization is 0.5w% of the catalyst. The results are listed in in Table 2

[0024] catalyst

Embodiment 3

[0026] Using the catalyst C described in Example 1, using a 100ml single-tube device, the selective hydrodeolefination ability of the catalyst was investigated under different pressures. The raw material is the BTX fraction of continuous reforming oil, the distillation range is 57.6-164.6°C, the aromatics content is 82.81w%, and the bromine index is 2990mgBr / 100g oil. The reaction conditions are a temperature of 170°C, a hydrogen-to-oil ratio of 250, and a space velocity of 2.0. The results are shown in Table 3.

[0027] Reaction pressure Mpa

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PUM

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Abstract

The catalyst contains noble metal in 0.1-1.0 wt% as active component, alkali metal or alkali metal in 0.05-0.50 wt% as assistant and refractory inorganic oxide as carrier. It has specific surface area of 150-250 sq m/g and pore volume of 0.3-0.8 ml/g. It is used in the selective hydrogenation and oleine removing of gasoline fraction reformate in reaction temperature 150-250 deg.c, reaction pressure 1.5-3.0 MPa and volume space velocity 2.0-4.0/hr. It may result in product bromine index less than 100 mg Br/100 g, arene loss less than 0.5 wt% and satisfactory results.

Description

1. Technical field [0001] The invention belongs to the hydrofining of petroleum hydrocarbon products, more specifically, it relates to a catalyst mainly used for selective hydrodeolefination of oil produced by reforming gasoline fractions. 2. Background technology [0002] Catalytic reforming oil selective hydrogenation The main function of the catalyst is to selectively hydrogenate the reformed oil to remove olefins in the hydrogenation state, and to realize deep hydrogenation and removal of aromatics when the aromatics are not saturated by hydrogenation Alkenes in it. [0003] The resulting oil produced by catalytic reforming of naphtha fraction is rich in aromatics and a part of solvent oil fraction, and also contains a small amount of olefins. For reforming units that produce chemical-grade BTX aromatics, they are faced with the problem of how to remove olefins in the reformed oil, because in order to produce qualified chemical raw material aromatic products and solvent...

Claims

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Application Information

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IPC IPC(8): C10G45/40
Inventor 张丽娟陈玉琢赵乐平樊宏清
Owner CHINA PETROLEUM & CHEM CORP
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