Combined process for processing heavy oil

A combined process and heavy oil hydrogenation technology, which is applied in the fields of hydrogenation treatment process, petroleum industry, hydrocarbon oil treatment, etc., can solve the problems of high colloid and asphaltene content, difficult to use hard asphalt, harsh operating conditions, etc. The effects of reducing quality and asphaltene content, reducing carbon residue value, and prolonging the start-up period

Active Publication Date: 2008-02-06
SINOPEC LUOYANG PETROCHEM ENG CORP
View PDF8 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] The purpose of the present invention is to solve the problems of harsh operating conditions of heavy oil hydrotreating units in the prior art and the difficulty of using hard asphalt, and develop a new process for the organic combination of decarbonization and hydrogenation of heavy oil, so that the metal content is high. Heavy oil with high content of , colloid and asphaltenes, high carbon residue, high sulfur content and high nitrogen content is processed through a combination of solvent deasphalting process and coking process

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] Processing sand light and heavy oil.

[0038] Shaqing vacuum residue is divided into two parts, wherein one part accounting for 48% by weight of the total weight of Shaqing vacuum residue is used as the feedstock of the solvent deasphalting device; the other part accounting for 52% by weight of the total weight of Shaqing vacuum residue The deoiled bitumen produced by the solvent deasphalting unit is mixed with the deoiled asphalt produced by the solvent deasphalting unit as the feed of the delayed coking unit; the feed of the heavy oil hydrotreating unit is: mixed oil of vacuum wax oil, deasphalted oil and coker heavy oil. Solvent deasphalting test, delayed coking test and heavy oil hydrotreating test were all carried out on medium-scale test equipment.

[0039] Adopting this process route can prevent the light sand and normal slag from being directly used as the feed of the heavy oil hydrotreating unit, thereby reducing the operating severity of the heavy oil hydrotre...

Embodiment 2

[0060] Processing sand light and heavy oil.

[0061] Atmospheric residue is divided into two parts, and one part that accounts for 92.5% by weight of the total weight of atmospheric residue obtains vacuum wax oil and vacuum residue after vacuum distillation, and the other part that accounts for 7.5% by weight of the total weight of atmospheric residue One part enters the heavy oil hydrotreating unit. The vacuum residue obtained after vacuum distillation is also divided into two parts, wherein one part accounting for 50.0% by weight of the total weight of the vacuum residue is blended with catalytic cracking oil slurry and heavy coking wax oil as the feed of the solvent deasphalting unit. The deasphalted oil was obtained after the feed was deasphalted with a mixed solvent, and the yield of the deasphalted oil was 84.6m%. The properties are shown in Table 6. The other part, accounting for 50.0% by weight of the total weight of the vacuum residue, enters the heavy oil hydrotreat...

Embodiment 3

[0069] This technical scheme processes Iranian normal slag with poor processing properties. Its processing technology route is that the Iranian slag is directly used as the feed of the solvent deasphalting unit; the deoiled asphalt is used as the feed of the delayed coking unit; Oil replaces the original Iranian slag and directly enters the heavy oil hydrotreating unit. Hydrotreated heavy oil is used as feedstock for catalytic cracking units. Solvent deasphalting test, delayed coking test and heavy oil hydrotreating test were all carried out on the medium-scale test unit.

[0070] The Iranian slag is used as the raw material oil of the solvent deasphalting test device. The solvent used is mainly pentane, mixed with a small part of butane, and the weight ratio is 85:15. The test temperature is 175 °C and the pressure is 3.0Mpa. The oil weight ratio was 5.5:1. The main properties of Iranian slag and deasphalted oil are shown in Table 9.

[0071] Table 9 Analysis of main prop...

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

No PUM Login to view more

Abstract

The invention discloses a group technology for heavy oil upgrading, in which the job steps include: (1) full or moiety of heavy oil individually or mixed with catalytic clarified oil entering solvent deasphalting plant, after the solvent deasphalting treatment, obtaining a deasphalted oil and a degreasing asphalt; (2) the degreasing asphalt obtained by step (1) individually or mixed with another moiety of heavy oil entering coking plant for coking treatment, in which the obtained tar heavy oil returns to solvent deasphalting plant or enters heavy oil hydrotreating plant, or moiety of tar heavy oil returns to solvent deasphalting plant and another moiety of tar heavy oil enters heavy oil hydrotreating plant, catalytic plant or hydrocracking plant; (3) the deasphalted oil obtained by step (1) individually or mixed with vacuum residual oil, non-pressure residual oil, pressure-relief residual oil, catalytic cycle stock and one or more than one heavy oil of tar heavy oil obtained by step (2) entering heavy oil hydrotreating plant for hydrotreatment, after hydrotreatment, obtaining fractions of benzin naphtha, plane kerosene and diesel and hydrogenating heavy oil. The invention can improve the charge-in nature, alleviate the operating condition and prolong the cycle length of the heavy oil hydrotreating plant, which provides better raw oil for downstream plants including catalytic plant.

Description

technical field [0001] The invention belongs to the technical field of petroleum refining, and relates to a technology for treating heavy oil by organically combining decarbonization and hydrogenation processes. Background technique [0002] With the rapid development of the global economy, the demand for light and clean fuel oil is also growing rapidly, and the quality of crude oil is getting worse and worse with the continuous increase of crude oil extraction, mainly manifested in high density, high viscosity, and high content of heavy metals , high sulfur content, high nitrogen content, high colloid and asphaltene content, which brings great difficulties to the processing of crude oil. [0003] There are two types of processing technology for heavy oil processing, one is hydrogenation process, mainly including hydrotreating, hydrofining, etc.; the other is decarbonization process, mainly including solvent deasphalting, coking, heavy oil catalytic cracking, etc. Heavy oil...

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 Patents(China)
IPC IPC(8): C10G67/04
Inventor 黄新龙徐惠秦如意霍宏敏王洪彬胡艳芳赵晓青孟凡东
Owner SINOPEC LUOYANG PETROCHEM ENG CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap