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A kind of hydrogenation catalyst and its preparation method and the method of light oil hydrofinishing

A hydrogenation catalyst and hydrorefining technology, applied in chemical instruments and methods, catalyst carriers, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problems of high impurity content, etc. Porosity, effect of reducing olefin content

Active Publication Date: 2016-06-01
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the molecular weight of heavy oil is larger than that of light oil, and the impurity content contained in heavy oil is more than that of light oil, the catalyst suitable for heavy oil is not suitable for the hydrorefining of light oil.

Method used

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  • A kind of hydrogenation catalyst and its preparation method and the method of light oil hydrofinishing
  • A kind of hydrogenation catalyst and its preparation method and the method of light oil hydrofinishing
  • A kind of hydrogenation catalyst and its preparation method and the method of light oil hydrofinishing

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preparation example Construction

[0028] The present invention also provides a method for preparing a hydrogenation catalyst, which includes the following steps: (1) mixing the aluminum source with a peptizer, a pore-enlarging agent, and a forming aid at a ratio of 1:0.01-0.05:0.01-0.04:0.01- Mix evenly at a weight ratio of 0.06, shape the obtained mixture into a toothed spherical shape, dry and roast to obtain a toothed spherical alumina carrier; (2) mix the soluble salt solution of the VIB group metal component and the VIII group metal component with the step ( 1) The prepared toothed spherical alumina carrier is contacted, and sequentially cured, dried and roasted.

[0029]According to the preparation method provided by the present invention, by mixing the aluminum source with the peptizing agent, the pore expander and the forming aid in the above weight ratio, preferably in a weight ratio of 1:0.01-0.035:0.02-0.03:0.01-0.04, so that The prepared alumina carrier has proper pore volume and specific surface a...

Embodiment 1

[0056] (1) Carrier preparation

[0057] Mix 100g of aluminum hydroxide dry glue with 22g of 35% by weight phosphoric acid, add 3g of scallop powder, 3g of sodium polyacrylate and mix for 30min, then add 55g of 2% by weight of dilute nitric acid, continue to mix and grind for 40min with a mixer, add In the trough of the extruder, it is extruded through a toothed spherical orifice, and then pelletized by a pelletizing machine to obtain a shaped carrier. Then, it was left standing at 25° C. for 1 hour, dried at 100° C. for 2 hours in an air atmosphere, and then calcined at 500° C. for 4 hours to obtain a toothed spherical alumina carrier with a particle size of 2.5 mm. The appearance of the toothed spherical alumina carrier is as follows figure 1 As shown, each of the toothed spherical alumina carriers has 5 teeth evenly distributed, and the ratio of the maximum width of the groove formed between the teeth to the perimeter of the sphere where the tooth sphere is located is 1:5, ...

Embodiment 2

[0061] (1) Carrier preparation

[0062] Mix 100g of aluminum hydroxide dry glue with 17g of 35% by weight phosphoric acid, add 1g of scallop powder, 3g of sodium polyacrylate and mix for 60min, then add 55g of 6% by weight of dilute nitric acid, continue to mix and grind for 60min with a mixer, add In the trough of the extruder, it is extruded through a toothed spherical orifice, and then pelletized by a pelletizing machine to obtain a shaped carrier. Then, stand at 20°C for 1 hour, dry at 80°C for 4 hours in an air atmosphere, and then bake at 600°C for 3 hours to obtain a toothed spherical oxide with the same shape as in step (1) of Example 1. Aluminum carrier. The pore volume and specific surface area of ​​the toothed spherical alumina carrier are shown in Table 1.

[0063] (2) Catalyst preparation

[0064] Mix 60 g of deionized water, 55 g of ammonium heptamolybdate, and 168 g of nickel nitrate, then add deionized water to prepare a uniform 300 mL solution, and spray th...

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Abstract

The invention discloses a hydrogenation catalyst. The hydrogenation catalyst comprises a tooth ball-shaped alumina carrier, and group VIB metal components and group VIII metal components loaded on the tooth ball-shaped alumina carrier, wherein the pore volume and the specific surface area of the tooth ball-shaped alumina carrier are 0.6-0.8mL / g and 340-400m<2> / g respectively. The invention also provides a preparation method of the hydrogenation catalyst, and a light oil hydrofining method. The hydrogenation catalyst can be used in kerosene hydrofining apparatuses, can fully perform its hydrogenation performance, can effectively maintain the pressure drop stability of the system of a hydrogenation apparatus and can prolong of the running period of the hydrogenation apparatus.

Description

technical field [0001] The invention relates to a hydrogenation catalyst, a preparation method thereof and a method for hydrofinishing light oil. Background technique [0002] With the rapid development of civil aviation, aviation kerosene is in short supply. At present, the main method of producing jet fuel is hydrofining of straight-run kerosene fraction. Hydrofining of kerosene distillate is operated under low pressure, and the depth of hydrogenation is shallow. It can only remove mercaptans, but cannot significantly improve the quality of other kerosene products. For example, it has no obvious effect on indicators such as aromatics content, smoke point, nitrogen content, and acid content. In addition, in the process of industrially hydrotreating kerosene, there is a problem that the pressure drop rises rapidly to varying degrees during the operation of the hydrogenation unit. [0003] CN101376826A discloses a wide fraction coking kerosene hydrogenation process. Adjust...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J35/08B01J35/10B01J32/00B01J23/883C10G45/08
Inventor 祁兴维任靖王震张勇李梁善姜艳李春晓徐小圆宋春利姜文华
Owner CHINA PETROLEUM & CHEM CORP
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