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Hydrotreatment method of deep vacuum distillation wax oil

A technology for deep drawing of wax oil and hydrotreating, which is applied in refining to remove heteroatoms, etc., can solve the problems of short operation period and insufficient hydrotreating depth, achieve long operation period, delay the rise and decrease of bed pressure drop. Effect of coking rate

Active Publication Date: 2011-03-23
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Specifically, it is to solve the problems of short operating period and insufficient depth of hydrotreating in the prior art method of processing inferior vacuum deep-drawn heavy wax oil to produce high-quality FCC feedstock

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] The raw material oil of this embodiment is vacuum deep waxing oil A, and its properties are shown in Table 1. Using the method provided by the invention, the treatment is carried out on a fixed-bed medium-scale hydrogenation test device provided with two reactors. The commercial grade of the catalyst combination used in the first reactor is RG-10A / RG-10B / RDM-x, and the loading volume ratio is 20:20:60. The second reactor uses RMS-1 / RN-32V, and the loading volume ratio is They are 15:85 (volume ratio), respectively. After the catalyst is sulfurized, the raw oil is processed. The process parameters and product oil properties are shown in Table 2.

[0028] As can be seen from Table 2, through the method provided by the present invention, the carbon residue of the refined heavy distillate obtained is less than 0.2% by weight, the total metal content is less than 0.3 μg / g, the sulfur content is only 1200 μg / g, and the nitrogen content is only 630 μg / g, is a high-quality ...

Embodiment 2

[0036] The raw material oil B in this example is a mixed wax oil obtained by mixing heavy gas oil under vacuum deep drawing and coker gas oil (CGO) at a mass ratio of 85:15. Its properties are shown in Table 3. Using the method provided by the invention, the treatment is carried out on a fixed-bed medium-scale hydrogenation test device provided with two reactors. The commercial grade of the catalyst combination used in the first reactor is RG-10A / RG-10B / RDM-x, and the loading volume ratio is 10:15:75. The second reactor uses RMS-1 / RN-32V, and the loading volume ratio is They are 20:80 respectively. After the catalyst is sulfurized, the raw oil is processed. The process parameters and product oil properties are shown in Table 4.

[0037] As can be seen from Table 4, through the method provided by the present invention, the carbon residue of the refined heavy distillate obtained is less than 0.1% by weight, the total metal content is less than 0.1 μg / g, the sulfur content is ...

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PUM

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Abstract

The invention relates to a hydrotreatment method of deep vacuum distillation wax oil. The mixture of raw oil and hydrogen passes through two hydrogenation reaction zones in sequence, wherein a hydrogenation protective agent and a hydrogenation demetalization deasphaltenizing agent are filled in the first hydrogenation reaction zone, and a hydrogenation desulfurizing agent and a hydrogenation denitrification desulfurizing agent are filled in the second hydrogenation reaction zone. Reaction products are cooled and separated to obtain refined heavy fraction oil, and the refined heavy fraction oil is a high quality raw material for catalytic cracking. In the invention, the raw oil has strong adaptability and can be used for processing deep vacuum distillation wax oil with high sulphur content, high nitrogen content, high metal and high asphaltene content and mixed oil thereof, and moreover, the device has long running period.

Description

technical field [0001] The invention belongs to a method for refining hydrocarbon oil in the presence of hydrogen, more specifically, a method for hydrogenation treatment of vacuum deep waxing oil and its mixed oil. Background technique [0002] At present, the price of crude oil is getting higher and higher, and the proportion of crude oil procurement cost in the total refining cost has risen sharply, which has greatly reduced the profit margin of the refinery. On the other hand, the trend of crude oil resources becoming inferior and heavy in the world is obvious. The API ratio of imported crude oil in the United States has decreased by more than 4 units since the early 1980s. The situation in China is similar to this. In this context, how to use limited resources to maximize the production of target oil products (mainly light oil and middle distillates) and reduce by-products such as coke refining technology has become the key to improving the efficiency of refineries. ...

Claims

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Application Information

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IPC IPC(8): C10G45/08
Inventor 蒋东红胡志海张毓莹吴昊龙湘云胡大为
Owner CHINA PETROLEUM & CHEM CORP
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