Catalyst-combined hydrotreating technique of inferior heavy oil

A technology for hydrotreating and low-quality heavy oil, applied in the field of hydrogenation, can solve problems such as short operation cycle, and achieve the effects of reducing pressure drop, low investment, and long device operation cycle

Active Publication Date: 2013-09-11
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the operation period of this meth

Method used

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  • Catalyst-combined hydrotreating technique of inferior heavy oil
  • Catalyst-combined hydrotreating technique of inferior heavy oil
  • Catalyst-combined hydrotreating technique of inferior heavy oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] Embodiment 1 (the described concentration % is mass %)

[0052] use figure 1 The hydrogenation process combination shown includes 5 reactors, including 2 upflow de-iron and decalcification reactors, 1 upflow demetallization reactor, 1 desulfurization reactor and 1 denitrogenation reactor. Catalyst gradation assembly scheme is adopted, and hydrode-iron and decalcification catalyst, hydrodemetallization agent, hydrodesulfurization agent and hydrodenitrogenation agent are filled in the reactor respectively, and the addition ratios are 20%, 25%, and 20% respectively , 35%.

[0053] The preparation process of catalyst grade combination is as follows:

[0054] The upflow de-iron and decalcification reactor is filled with a hydrogenation de-iron and decalcification agent, numbered DFC-1#, and the preparation method of the catalyst is as follows:

[0055] In this example, Raschig ring Al 2 o 3 As a carrier, the catalyst whose active metal component is Mo was prepared by th...

Embodiment 2

[0073] use figure 1 The hydrogenation process combination shown includes 5 reactors, including 2 upflow de-iron and decalcification reactors, 1 upflow demetallization reactor, 1 desulfurization reactor and 1 denitrogenation reactor. Catalyst gradation assembly scheme is adopted, and hydrodeferrification and decalcification catalyst, hydrodemetallization agent, hydrodesulfurization agent and hydrodenitrogenation agent are filled in the reactor respectively, and the addition ratios are 25%, 25%, and 20% respectively , 30%.

[0074] The upflow fixed-bed de-iron and decalcification reactor is filled with a hydrode-iron and decalcification catalyst, numbered DFC-2#, and the preparation method is as follows:

[0075] Select spherical Al 2 o 3 As a carrier, weigh 150g of Al with a water absorption rate of 1.10mL / g 2 o 3 Carrier, spray 50mL containing 8.6g ammonium molybdate (containing MoO 3 82%, the aqueous solution of Beijing Chemical Reagent Company), 15 minutes spray and so...

Embodiment 3

[0083] use figure 1 The hydrogenation process combination shown includes 5 reactors, including 2 upflow de-iron and decalcification reactors, 1 upflow demetallization reactor, 1 desulfurization reactor and 1 denitrogenation reactor. Catalyst gradation assembly scheme is adopted, and hydrodeferrification and decalcification catalyst, hydrodemetallization agent, hydrodesulfurization agent and hydrodenitrogenation agent are filled in the reactor respectively, and the addition ratios are 15%, 20%, and 25% respectively , 40%.

[0084] The upflow fixed-bed iron and decalcification reactor is filled with a hydrodeferrification and decalcification catalyst DFC-1#, and the catalyst is the same as in Example 1.

[0085] The upflow demetallization reactor is filled with a hydrodemetallization agent DM-2#, and the catalyst is the same as in Example 1.

[0086] The desulfurization reactor is filled with a hydrodesulfurization agent, numbered DS-2# respectively. Catalyst is with embodime...

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Abstract

The invention provides an inferior heavy oil hydrotreating technique and catalyst gradation combination capable of enhancing utilization ratio of the catalyst, which contains two parallel up-flow deferrization decalcification reactors, an up-flow demetallization reactor, a fixed bed desulfurization reactor and a fixed bed denitrification reactor. By adopting a simple and flexible hydrotreating process and properly selecting an effective catalyst, the invention finally achieves the goals of enhancing the hydrogenation and impurity removal capacities of the catalyst and maximally prolonging the operation period of the device. The invention is especially suitable for treating high-sulfur high-metal-content high-asphaltene residual oil, and can implement long-period operation of the device.

Description

technical field [0001] The method of the invention can be used in the field of hydrogenation, and is especially suitable for hydrofinishing and hydrotreating of heavy distillate oil and residual oil with high metal, high sulfur and high asphaltene content. The method of the invention not only has high demetallization, desulfurization, denitrification and deasphaltene activities, but also has a long device operation period. Background technique [0002] At present, the demand for light and medium oil products in the domestic and foreign oil product markets will continue to rise, while the demand for heavy oil products such as fuel oil will show a downward trend. In addition, due to the increasing pressure of environmental protection, countries have generally raised the quality standard requirements of petroleum products, especially gasoline and diesel products for vehicles. Under the above-mentioned market trend, the refining technology that can not only realize the lighteni...

Claims

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Application Information

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IPC IPC(8): C10G65/04
Inventor 赵元生赵愉生周志远刘元东张志国于双林张春光那美琦
Owner PETROCHINA CO LTD
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