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A kind of processing method of heavy crude oil

A processing method and raw oil technology, which is applied in the processing of hydrocarbon oil, hydrogenation treatment process, petroleum industry, etc., can solve the problems of wasting reactor space, etc., and achieve the effects of preventing asphaltene precipitation, stabilizing the colloidal system, and improving economic benefits

Active Publication Date: 2016-04-27
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method always has a protective reactor offline, and the utilization efficiency of the protective reactor is only 50%, wasting precious reactor space

Method used

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  • A kind of processing method of heavy crude oil
  • A kind of processing method of heavy crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0068] According to a preferred embodiment of the present invention, the present invention is carried out as follows: catalytic cracking heavy cycle oil from catalytic cracking unit D, catalytic cracking light cycle oil and residue (or wax oil, used in the embodiment is Residuum) mixed with hydrogen together into the hydrogenation protection unit, and then into the hydroprocessing unit C, in the presence of a hydrogenation catalyst for hydroprocessing reaction, separation of hydroprocessing products, to obtain gas, hydrogenated naphtha and hydrogenated Hydrogen tail oil, in which gas and hydrogenated naphtha are drawn separately, and hydrogenated tail oil enters catalytic cracking unit D together with optional vacuum gas oil, reacts in the presence of catalytic cracking catalyst, and separates the reaction products of catalytic cracking , to obtain dry gas rich in ethylene, liquefied gas rich in propylene and butene, catalytic cracking naphtha rich in single-ring aromatics, cat...

Embodiment 1

[0073] In the raw oil treatment device used in this example, the main hydrogenation protection reactor is a protection reactor A, the standby hydrogenation protection reactor is a protection reactor B, and the hydroprocessing unit C is a fixed bed residual oil processing unit. Hydrogen device, the catalytic cracking unit D is a laboratory fixed fluidized bed catalytic cracking device, such as figure 1 shown.

[0074] Among them, 60 mL of RG-30A catalyst, 60 ml of RG-30B catalyst, and 60 ml of RDM-32 catalyst are filled in the main hydrogenation protection reactor A in sequence; 20 mL of RG-30A catalyst, 20 mL of RG-30B catalyst and 20ml of RDM-32 catalyst; 200mL of RDM-32 catalyst and 400mL of RMS-30 catalyst are filled in the fixed-bed residual oil hydrotreating reactor C; Catalysts are all produced by Catalyst Changling Branch.

[0075] A kind of atmospheric residual oil is used as feedstock oil A, a kind of catalytic cracking heavy cycle oil (HCO) is used as feedstock oil...

Embodiment 2

[0089] According to the method of Example 1, the heavy feed oil is processed, the difference is that the heavy feed oil is a separate atmospheric residue A, that is, the catalytic cracking heavy cycle oil (HCO) and the catalytic cracking light cycle oil obtained from the catalytic cracking unit D (LCO) is not returned to be used as a hydrogenation protection unit as a raw material, and the feed amount of heavy crude oil A is 156g / h, the hydrogen-oil volume ratio of the protection unit and the treatment unit are both 1000, and the rest of the conditions are the same.

[0090] The test results are: based on raw material A, the total yield of high-value products (ethylene + propylene + butene + single-ring aromatics) is 42.6%.

[0091] Comparing Example 1 and Example 2, it can be seen that catalytic cracking heavy cycle oil (HCO) and catalytic cracking light cycle oil (LCO) are returned as hydrogenation protection units as raw materials for re-refining, which can be compared with ...

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Abstract

The invention provides a heavy raw oil treatment method. The method is carried out in a raw oil treatment apparatus, the apparatus comprises a hydrogenation protection unit, a hydrotreatment unit and a catalytic cracking unit which are sequentially connected in series, the hydrogenation protection unit comprises a main hydrogenation protection reactor and a standby hydrogenation protection reactor which are connected in parallel, and the volume of the main hydrogenation protection reactor is greater than the volume of the standby hydrogenation protection reactor. The method is characterized in that heavy raw oil and hydrogen are introduced to the apparatus, and contact with a plurality of hydrogenation catalyst beds arranged in the apparatus to obtain hydrogenated tail oil; and the main hydrogenation protection reactor and the standby hydrogenation protection reactor are alternately used, and the online time of the main hydrogenation protection reactor is greater than the online time of the standby hydrogenation protection reactor. The method has the advantages of high yield of low carbon olefins and monocyclic aromatic hydrocarbons, and high space utilization rate of the above reactors.

Description

technical field [0001] The invention relates to a method for processing heavy raw oil. Background technique [0002] Low-carbon olefins and single-ring aromatics are important petrochemical basic raw materials. Low-carbon olefins include ethylene, propylene and butene. At present, low-carbon olefins are mainly produced through steam cracking, and naphtha is the main raw material. Monocyclic aromatic hydrocarbons mainly include benzene, toluene and xylene, and are currently mainly produced from naphtha as a raw material through reforming. As the world's crude oil becomes heavier, the price gap between light oil and heavy oil is getting wider and wider. It will be more cost-effective to produce low-carbon olefins and single-ring aromatics by using lower-priced heavy oil. [0003] Catalytic cracking technology is an important means of producing propylene. This technology usually uses heavy oil such as vacuum gas oil and hydrogenated residue as raw materials, and undergoes dee...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G69/00
Inventor 牛传峰董凯高永灿戴立顺崔琰刘涛邓中活施瑢邵志才杨清河胡大为孙淑玲
Owner CHINA PETROLEUM & CHEM CORP
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