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Inferior heavy oil hydrotreatment process

A low-quality heavy oil and hydrogenation treatment technology, which is applied in the field of hydrogenation, can solve the problems of short operation cycle and achieve the effects of slowing down the pressure drop, slowing down the growth rate, and slowing down the rising speed

Active Publication Date: 2013-03-06
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the operation period of this method is short, generally no more than 1 year

Method used

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  • Inferior heavy oil hydrotreatment process
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  • Inferior heavy oil hydrotreatment process

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Embodiment 1 (the described concentration % is mass %)

[0050] 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.

[0051] 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:

[0052] In this embodiment, the pentagonal Al 2 o 3 As a carrier, the catalyst with Mo as the active metal component was prepared by saturated spray immersion method.

[0053] Weigh 150g of Al with a water absorption rate of 1.10ml / g 2 o 3 Carrier, spray immersion 50ml containing 8.6g ammonium molybdate (containing MoO 3 82%, Beijing Chemical Reagent Company) impregnating solution, drip 115ml aqueous solution in the impregnating solution at a uniform speed and stir during the spraying ...

Embodiment 2

[0070] 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.

[0071] 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:

[0072] 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 immersion 50ml containing 8.6g ammonium molybdate (containing MoO 3 82%, Beijing Chemical Reagent Company) aqueous solution, in the process of spraying and soaking, drip 115ml concentration at a uniform speed and be 15% ammoniacal solution in the above-mentioned solution and stir, spray and soak while dripping, finish spraying and soaking in 5 minutes. After homogenizing for 10 minutes in the spray-dipping equipment, dry at 60°C for 2 h...

Embodiment 3

[0080] 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.

[0081] 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.

[0082] The upflow demetallization reactor is filled with a hydrodemetallization agent DM-2#, and the catalyst is the same as in Example 1.

[0083] The desulfurization reactor is filled with a hydrodesulfurization agent, numbered DS-2# respectively. Catalyst is with embodiment 1.

[0084] The fixed-bed denitrogenation reactor is filled with a hydrodenitrogenation catalyst DN-2#, the catalyst is the same as in Example 2.

[0085] The raw material oil C used in the evaluation is a residual oil raw material, and its properties are shown in Table 3. The operation sc...

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Abstract

The invention provides an inferior heavy oil hydrotreatment process capable of improving catalyst utilization rate. In the inferior heavy oil hydrotreatment process, two parallelly connected upflow type deferrization and decalcification reactors, an upflow type demetalization reactor, a fixed bed desulfurization reactor and a fixed bed denitrification reactor are used. By adopting simple and flexible hydrotreatment steps and properly selecting effective catalysts, catalyst hydrogenation and impurity removal capability can be improved finally, and the purpose of prolonging running periods of devices to the greatest extent can be achieved. The inferior heavy oil hydrotreatment process is particularly applicable to treating residual oil high in sulfur, metal content and asphaltene and capable of realizing long-term running of the devices.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/04
Inventor 赵元生赵愉生谭青峰程涛崔瑞利周志远范建光那美琦
Owner PETROCHINA CO LTD
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