Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Flexible two-stage hydrocracking method

A technology of hydrocracking and hydroisomerization cracking, which is applied in the fields of hydrotreating process, petroleum industry, and hydrocarbon oil treatment, etc. It can solve the problems of poor operational flexibility and achieve the effect of high viscosity index and low freezing point

Active Publication Date: 2019-07-09
CHINA PETROLEUM & CHEM CORP +1
View PDF9 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the above-mentioned two-stage hydrocracking processes are used alone, different types of hydrocracking catalysts can only be selected according to needs, or two kinds of molecular sieve composite catalysts are used, or two kinds of hydrocracking catalysts are used in gradation, but these The process can only produce tail oil products of one nature, that is, the operation flexibility is relatively poor

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
  • Flexible two-stage hydrocracking method
  • Flexible two-stage hydrocracking method
  • Flexible two-stage hydrocracking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0047] Protective agents FZC-100, FZC-105 and FZC106 are hydrogenation protective agents developed and produced by Sinopec Fushun Petrochemical Research Institute; catalyst FF-56 is developed and produced by Sinopec Fushun Petrochemical Research Institute Hydrotreating catalyst; Catalyst FC-32 is a hydrogenation upgrading catalyst developed and produced by Fushun Petrochemical Research Institute of China Petrochemical Corporation, containing Y-type molecular sieve; Catalyst FC-20 is a research and development product of Fushun Petrochemical Research The hydroisomerization cracking catalyst developed and produced by the Institute contains β-type molecular sieves.

[0048] Table 1 Main properties of wax oil feedstock

[0049]

[0050] Table 2 process conditions

[0051]

[0052] Continued Table 2 Process Conditions

[0053]

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
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention discloses a flexible two-stage hydrocracking method. A wax oil raw material enters a separation system after hydrogenation pretreatment and mild hydrocracking; a separated liquid phase without impurities is divided into two parts; one part of the liquid phase enters a hydrocracking reactor using a reduction state hydrocracking catalyst; the other part of the liquid phase and hydrocracking tail oil are mixed and enter a hydroisomerization cracking reactor using a reduction state hydroisomerization cracking catalyst; an obtained hydrocracking reaction material and an obtained hydroisomerization cracking reaction material are subjected to gas-liquid separation and fractionation respectively to obtain naphtha, aviation kerosene, diesel oil and tail oil products of different specifications. The invention provides the two-stage hydrocracking process for simultaneously producing more than two types of light naphtha, heavy naphtha, aviation kerosene, diesel oil and tail oil products with different specifications on one set of hydrogenation process equipment for the first time.

Description

technical field [0001] The invention belongs to the field of petroleum refining, and in particular relates to a two-stage hydrocracking method for flexibly producing high-quality light naphtha, heavy naphtha, jet fuel, diesel oil and tail oil products with different properties. Background technique [0002] Hydrogenation technology is an important processing method for lightening heavy oil and upgrading the quality of light oil. Hydrocracking technology has developed rapidly due to the advantages of strong feed oil adaptability, good product flexibility, high liquid product yield, and high product quality. The existing hydrocracking technology can be divided into three types according to the processing flow: one-stage series hydrocracking process, single-stage hydrocracking process and two-stage hydrocracking process. According to whether the tail oil is recycled or not, it can be divided into three types: one-way one-pass process, partial cycle process and full cycle proce...

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): C10G67/00
CPCC10G67/00
Inventor 刘涛张学辉李宝忠黄玉洪吴锐方向晨
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com