Deep processing method for shale oil

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

Active Publication Date: 2016-12-14
ENERGY & ENVIRONMENT RES INST OF HEILONGJIANG PROVINCE
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  • Summary
  • 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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  • Deep processing method for shale oil
  • Deep processing method for shale oil
  • Deep processing method for shale oil

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Experimental program
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Embodiment approach

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

specific Embodiment approach 2

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

specific Embodiment approach 3

[0120] Specific embodiment three: This embodiment is different from specific embodiment one or two in that the minus first line diesel extraction temperature in step two is 365~375℃, minus second line wax oil extraction temperature is 445~455℃, minus third line The extraction temperature of wax oil is 490~510℃. Others are the same as 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 a product of thermal decomposition of organic matter during pyrolysis of oil shale. Its hydrocarbon ratio is similar to that of natural petroleum, and is also called "man-made petroleum." The properties of typical shale oil in my country are characterized by the "three highs", that is, high olefin content, high wax content, and high nitrogen content, all of which are high-nitrogen paraffin-based oils. Because the nature of shale oil is very different from conventional crude oil, it is impossible to complete the upgrading and lightening process at the same time by a single processing technology. It is necessary to adopt a combined process of decarburization and hydrogenation technology for processing to obtain a more ideal product. Rate and high performance products. Because shale oil contains many non-ideal components, especially the...

Claims

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Application Information

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Patent Type & Authority Applications(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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