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Reformed oil olefine saturation hydrogenation method

A technology for reforming oil and oil olefins, which is applied in the field of saturated hydrogenation of olefins. It can solve the problem that the bromine price cannot meet the product quality requirements, and achieve the effects of low metal content, high low-temperature activity, and reduced energy consumption.

Inactive Publication Date: 2003-02-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0020] The purpose of the present invention is to overcome the shortcomings of the prior art method that the bromine value of the hydrogenation product at low temperature cannot meet the product quality requirements, and the loss of aromatics is serious at high temperature, and provide a new bromine value of the hydrogenation product at a lower temperature Saturated hydrogenation method of olefins from reforming oil that can meet product quality requirements and has less loss of aromatics at high temperature

Method used

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Examples

Experimental program
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preparation example Construction

[0033] The preferred preparation method of the catalyst comprises impregnating the alumina support with an aqueous solution containing molybdenum and / or tungsten compounds and nickel compounds and an aqueous solution containing cobalt compounds, and calcining the alumina support impregnated with molybdenum and / or tungsten, nickel and cobalt, Wherein, the process of impregnating the alumina carrier with an aqueous solution of a cobalt-containing compound is carried out separately from the process of impregnating the alumina carrier with an aqueous solution of a tungsten and / or molybdenum compound and a nickel compound, and the impregnation of the alumina carrier with an aqueous solution of a cobalt-containing compound The process of carrier is after the alumina carrier is impregnated with the aqueous solution containing molybdenum and / or tungsten compound and nickel compound and calcined. more than 1 hour. Using this method can further improve the low-temperature activity of th...

example 1

[0049] This example illustrates the preparation of a support for the catalyst used in the process provided by the invention.

[0050] Take by weighing 5000 grams of aluminum hydroxide powder A (solid content is 70% by weight, pseudo-boehmite content is 85% by weight, produced by Shandong Aluminum Factory) and mixed with an appropriate amount of water, extruded into a circle with a circumscribed diameter of 1.6 mm. The trefoil strips were dried at 120°C for 2 hours, fired at 600°C for 4 hours, and the length of the obtained trefoil strips was cut into 2-3 mm to obtain the carrier Z 1 . Carrier Z 1 The specific surface area and pore volume are listed in Table 1. The specific surface and pore volume were measured by low-temperature nitrogen adsorption BET method (the same below).

example 2

[0052] This example illustrates the preparation of a support for the catalyst used in the process provided by the invention.

[0053] Take by weighing 500 grams of aluminum hydroxide powder A described in Example 1 (70 weight percent of solid content, 85 weight percent of pseudo-boehmite content, produced by Shandong Aluminum Works) and 500 grams of aluminum hydroxide powder B (70 weight percent of solid content, Pseudo-boehmite content 70% by weight, produced by Changling Oil Refinery Catalyst Factory), fully mixed, added appropriate amount of water to mix evenly, extruded into a trefoil-shaped strip with a circumscribed circle diameter of 1.6 mm with an extruder, and dried at 120 ° C 2 hours, 600 ° C for 4 hours, cut the length of the obtained trefoil into 2-3 mm, and make the carrier Z 2 . Carrier Z 2 The specific surface area and pore volume are listed in Table 1.

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Abstract

The reformate olefine saturation hydrogenation method includes the following steps: in the presence of one kind of catalyst making the reformate contact with hydrogen gas, its contact temp. is 200-320 deg.C, contact pressure is not less than 0.7 MPa, liquid hourly space velocity is 1-8 hr (-1), and volume ratio of hydrogen and oil is not less than 30. The described catalyst contains tungsten oxide and / or molybdenum oxide, nickel oxide and cobaltous oxide loaded on the alumina, the catalyst is used as reference, the content of the described tungsten oxide and / or molybdenum oxide is 4 wt% to less than 10 wt%, the content is nickel oxide is 1-5 wt%, the content of cobaltous oxide is 0.01-1 wt% and the ratio of total atomicity of nickel and cobalt and total atomicity of nickel, cobalt, tungsten and / or molybdenum is 0.3-0.9.

Description

technical field [0001] The present invention relates to a method for saturated hydrogenation of olefins, more specifically, to a reformed product oil which selectively hydrogenates olefins in the reformed product oil to reduce the content of olefins in the reformed product oil Olefin Saturated Hydrogenation Process. Background technique [0002] Catalytic reforming is one of the main processes for the production of high-octane gasoline and light aromatics. During the reforming process of naphtha, due to high-temperature dehydrogenation reactions, a small amount of olefins will be produced, especially in continuous reforming processes During the process, due to the operation under high temperature and low pressure conditions, more olefins are produced, and the content of olefins in the reformed oil will be higher. For the catalytic reforming process aimed at producing aromatics, the presence of a small amount of olefins will affect the color and stability...

Claims

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Application Information

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IPC IPC(8): C10G45/32
Inventor 夏国富朱玫李明丰聂红石亚华黄海涛张润强李坚褚阳王同恩
Owner CHINA PETROLEUM & CHEM CORP
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