Unlock instant, AI-driven research and patent intelligence for your innovation.

Hydrotreating method of heavy oil

A technology for hydrotreating and oil products, which is applied in the fields of hydrotreating process, hydrocarbon oil treatment, petroleum industry, etc. It can solve the problems of large asphaltene, inability to convert asphaltenes, demetallization, desulfurization, denitrification and The effect of carbon residue conversion is not ideal and other problems, and achieve good economic benefits

Active Publication Date: 2013-04-24
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] However, due to the large size of asphaltene molecules, this method still cannot convert asphaltene very well, so that the effects of demetallization, desulfurization, denitrification and carbon residue conversion of heavy oil products are not ideal.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrotreating method of heavy oil
  • Hydrotreating method of heavy oil

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0028] The preparation method of the macroporous hydrotreating catalyst (CAT-A) may include: mixing macroporous pseudo-boehmite dry rubber powder with polyvinyl alcohol, adding corn oil and aqueous solution for kneading, and mixing the obtained plastic body Carriers are obtained after shaping, drying and calcining. The catalyst can be prepared by loading the active metal components on the carrier by means of saturated impregnation. The macroporous pseudoboehmite dry rubber powder is commercially available.

[0029] The method of the present invention can adopt reactors of different structures, preferably a fixed-bed reactor.

[0030] In the present invention, there is no special limitation on the flow direction of raw materials in the hydrotreating zone, and each hydrogenation reactor can be either an upflow reactor or a downflow reactor.

[0031] According to the present invention, the hydrotreating reaction conditions may be conventional hydrotreating reaction conditions i...

Embodiment 1

[0053] use figure 1 In the shown equipment and process flow, the catalysts in reactor a are from top to bottom: RG-10A, RG-10B and CAT-A-1, and the loading volume ratio of each catalyst is 10:10:80.

[0054] The residue raw material M with high asphaltene content (the main properties are listed in Table 1) is mixed with hydrogen into reactor a, and then successively enters reactors b, c, d and e for hydrotreating. The hydrotreating conditions include : The reaction pressure is 14.7MPa, the volume ratio of hydrogen to oil is 600, and the liquid hourly volume space velocity is 0.216h -1 , The reaction temperature of reactor a is 390°C, and the reaction temperature of reactors b, c, d and e is 380°C.

[0055] The properties of the product P1 obtained after the hydrotreating of the residual oil include: a sulfur content of 0.33% by weight, a nitrogen content of 0.18% by weight, a residual carbon value of 6.8% by weight, a heavy metal (Ni+V) content of 13.6 μg / g, asphalt The mass...

Embodiment 2

[0059] use figure 1 The shown equipment and process flow make the residual oil raw material M mixed with hydrogen into reactor a, and then enter reactors b, c, d and e in sequence for hydrotreating. The hydrotreating conditions include: the reaction pressure is 13.2MPa , the volume ratio of hydrogen to oil is 1500, and the liquid hourly volume space velocity is 0.142h -1, The reaction temperature of reactor a is 375°C, and the reaction temperature of reactors b, c, d and e is 355°C.

[0060] Wherein, according to the type and the volume of the catalyst loaded in the reactor a, b, c, d and e in embodiment 1, each reactor of the present embodiment is packed, and the difference is that the catalyst in the reactor a is from top to bottom: : RG-10A, RG-10B and CAT-A-2, the ratio of each catalyst loading volume is 15:15:70.

[0061] The properties of the product P2 obtained after the hydrotreating of the residual oil include: a sulfur content of 0.4% by weight, a nitrogen content ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
pore sizeaaaaaaaaaa
specific surface areaaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a hydrotreating method of heavy oil. The method comprises the steps of introducing the heavy oil and hydrogen successively into a plurality of hydrogenation reactors connected in series under a hydrotreating reaction condition, and contacting with a plurality of hydrogenation catalyst bed layers of the hydrogenation reactors, wherein the hydrogenation reactors comprise a first hydrogenation reactor and subsequent hydrogenation reactors which are behind the first hydrogenation reactor according to a flow direction of the heavy oil. The first hydrogenation reactor comprises a hydrogenation protection catalyst bed layer and a macroporous hydrotreating catalyst bed layer, wherein the average pore size of the macroporous hydrotreating catalyst in the macroporous hydrotreating catalyst bed layer is 10-40 nm, pore volume is 0.1-2 cm3 / g, and a specific surface area is 100-250 m2 / g. Compared with a conventional method, the method provided by the invention can obtain a hydrotreating product with better performance, and particularly transfer the asphaltene in the heavy oil better.

Description

technical field [0001] The invention relates to a method for hydrogenation treatment of heavy oil products. Background technique [0002] As the crude oil becomes heavier, the variety of crude oil is increasing, and the requirements for lighter oil products are getting higher and higher, the importance of this process is becoming more and more obvious, and it has a good application prospect. [0003] "Heavy oil" means hydrocarbons with high asphaltenes content derived from topped crude oil, petroleum residues, oil sands, bitumen, shale oil, liquefied coal, or recycled oil. Heavy oils often contain various contaminants , such as carbon residues, sulfur, nitrogen, and metals. Generally, in the reactor sequence for processing heavy oil products, hydrodemetallization agent, hydrodemetallization desulfurization agent, hydrodesulfurization agent, hydrodenitrogenation agent, and hydrodecarbonization agent are filled in order to remove heavy oil Metals, sulfur, nitrogen and residu...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C10G65/12
Inventor 邵志才孙淑玲戴立顺牛传峰刘涛杨清河董凯
Owner CHINA PETROLEUM & CHEM CORP