Shale oil deep processing method

A technology for deep processing of shale oil, which is applied in the petroleum industry, hydroprocessing process, and hydrocarbon oil treatment, etc., and can solve problems such as low yield of light oil products, insufficient processing depth, complex shale oil deep processing process, etc. , to achieve the effect of expanding feed material sources and operating rate, improving utilization efficiency, improving overall efficiency and market competitiveness

Active Publication Date: 2018-05-25
ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0028] The purpose of the present invention is to provide a combination method for deep processing of shale oil in order to solve the technical problems of existing shale oil deep processing technology or complex process flow, low yield of light oil products and insufficient processing depth

Method used

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  • Shale oil deep processing method
  • Shale oil deep processing method
  • Shale oil deep processing method

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Embodiment approach

[0074] The full fraction shale oil 1-1 from the tank area enters the raw material pretreatment unit 1 for raw material pretreatment; the pretreated full fraction shale oil enters the vacuum distillation unit 2 to separate the light vacuum distillate 2-1, The heavy vacuum distillate oil 2-2 and the vacuum residue oil 2-3; the light vacuum distillate oil 2-1 enters the hydrorefining unit 3 and undergoes catalytic hydrogenation reaction with hydrogen gas 3-1 and catalyst in the hydrogenation reactor, The generated hydrogenated oil enters the product fractionation unit 5; the heavy vacuum distillate oil 2-2 and the vacuum residue 2-3 are mixed with the hydrogenated tail oil 5-3 separated from the product fractionation unit 5 and enters the delayed coking reaction unit 4. Carry out cracking and condensation reactions, and the generated coking distillate oil 4-1 enters the hydrorefining reaction unit 3 for back refining, and the generated coking heavy wax oil 4-2 and coke 4-3 leave t...

specific Embodiment approach 2

[0119] Specific embodiment two: this embodiment is different from specific embodiment one in that the vacuum distillation tower described in step two has a specification of φ6200×35000mm (cut), and 4 sections of structured packing are arranged inside. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0120] Specific embodiment three: the difference between this embodiment and one of the specific embodiments one or two is that the extraction temperature of the first-line diesel oil in step two is 365-375°C, the extraction temperature of the second-line wax oil is 445-455°C, and the extraction temperature of the third-line The extraction temperature of wax oil is 490-510°C. Others are the same as those in the first or second embodiment.

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Abstract

The invention relates to a shale oil deep processing combined process, in particular to a deep processing method for shale oil. The deep processing method aims at solving the technical problems that an existing method shale oil deep processing process is complex in technological process, low in light oil product yield and insufficient in processing depth. A raw material pretreatment unit, a reduced pressure distillation unit, a hydrofining unit, a delay coking unit and a product fractionation unit are involved in the shale oil deep processing combined method. The method that coked distillate returns to a hydrofining device for redistillation is adopted, and the raw material conversion rate and the yield of a diesel oil product are increased. Vacuum distillate, vacuum residuum and hydrogenated tail oil are mixed to serve as feed of a delayed coker, the yield of coking gas and coke is reduced, and the yield of coker diesel is increased.

Description

technical field [0001] The invention relates to a combined technology for deep processing of shale oil. Background technique [0002] Shale oil is the product of thermal decomposition of organic matter during oil shale pyrolysis. Its carbon-hydrogen ratio is similar to natural petroleum, also known as "artificial petroleum". The properties of typical shale oil in my country are characterized by "three highs", that is, high olefin content, high wax content, and high nitrogen content, all of which are high-nitrogen paraffin-based oils. Since the properties of shale oil are very different from those of conventional crude oil, upgrading and lightening processes cannot be completed simultaneously by a single processing technology, and a combined process of decarbonization and hydrogenation technology is required to obtain a more ideal product. rate and high performance products. Due to the many non-ideal components contained in shale oil, especially the existence of high paraff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
CPCC10G69/00C10G2400/04
Inventor 陈松徐晓秋王阳刘旭丹杨光
Owner ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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