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

A light hydrocarbon recovery method and device

A light hydrocarbon recovery and absorbent technology, applied in the light hydrocarbon recovery device and the light hydrocarbon recovery field, can solve the problems of complex operation, long process, high investment and energy consumption, and achieve simple process, low consumption of cooling energy, and reduced investment. and energy consumption

Active Publication Date: 2022-04-15
SINOPEC ENG +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] For the existing light hydrocarbon recovery process technology, the C3 / C4 component is usually recovered first, and then the C2 component is recovered. The process is long, and there is a secondary separation between the components, and the investment and energy consumption are high. , the operation is more complicated

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
  • A light hydrocarbon recovery method and device
  • A light hydrocarbon recovery method and device
  • A light hydrocarbon recovery method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0106] Light hydrocarbon recovery unit, including: hot / cold low-separation oil feed pipeline, debutanizer 1, fractionation tower 2, compressor 3, cooler 4, gas-liquid separation tank I5, rich gas desulfurization tower 6, liquid hydrocarbon desulfurization Tower 7, aftercooler 8, gas-liquid separation tank II 9, absorption tower 10 and separation unit;

[0107] Wherein, the hot / cold low fraction oil feed line is connected with debutanizer 1;

[0108] The debutanizer 1 is equipped with a condenser and a reflux tank, the bottom of the tower is connected to the fractionation tower 2, the top of the tower is connected to the condenser and the reflux tank in turn, and the top of the reflux tank is connected to the rich gas desulfurization tower 6, aftercooler 8, gas The liquid separation tank II9 is ​​connected, and the bottom of the tank is connected with the liquid hydrocarbon desulfurization tower 7, the aftercooler 8, and the gas-liquid separation tank II9 in sequence;

[0109]...

Embodiment 2

[0139] use as figure 2 The process flow chart shown is for oil and gas desulfurization and light hydrocarbon recovery.

[0140] Among them, the difference between this embodiment and embodiment 1 is:

[0141] (7) Separation:

[0142] Demethanization: The liquid phase from the bottom of the gas-liquid separation tank II9 removes methane in the demethanizer 11, and at the same time removes a small part of C2 and components above C2, and the gas phase at the top of the demethanizer 11 returns after cooling Gas-liquid separation tank II9, the liquid phase at the bottom of the tower is sent to the deisobutanizer 15; the operating temperature of the top of the demethanizer 11 is 15-40°C, and the operating pressure is 2.25-2.85MPaG;

[0143]Deisobutanization: The liquid phase from the bottom of the demethanizer 11 is separated in the deisobutanizer 15 from components below C3 and C3, and the separated overhead gas phase is sent to the deethanizer 12, and the liquid phase at the bo...

Embodiment 3

[0156] use as image 3 The process flow chart shown is for oil and gas desulfurization and light hydrocarbon recovery.

[0157] Among them, the difference between this embodiment and embodiment 1 is:

[0158] (7) Separation:

[0159] Demethanization: The liquid phase from the bottom of the gas-liquid separation tank II9 removes methane in the demethanizer 11, and at the same time removes a small part of C2 and components above C2, and the gas phase at the top of the demethanizer 11 returns after cooling Gas-liquid separation tank II9, the liquid phase at the bottom of the tower is sent to the depropanizer I13; the operating temperature at the top of the demethanizer 11 is 15-40°C, and the operating pressure is 2.25-2.85MPaG;

[0160] Depropanization: The liquid phase components from the bottom of the demethanizer 11 are separated in the depropanizer I13, and the separated components of C3 and below C3 are extracted from the top of the depropanizer I13 and sent to the deethan...

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 belongs to the field of oil refining and chemical industry, and specifically discloses a method and device for recovering light hydrocarbons. The process of the method is simple, the operating conditions are moderate, the cooling capacity consumption is small, and the light hydrocarbons in the hydrocracking process can be recovered by using less equipment. The separation and recovery of ethane, propane and carbon four components can be achieved in particular. The recovery rate of ethane is over 97wt%, the recovery rate of propane is over 98wt%, and the methane content in the recovered ethane Not more than 1vol%, and the ethane content in the recovered propane is not more than 300ppmv.

Description

technical field [0001] The invention belongs to the field of oil refining and chemical industry, and more specifically relates to a method and a device for recovering light hydrocarbons, and more specifically relates to a device and a method for recovering light hydrocarbons in a hydrocracking process. Background technique [0002] Hydrocracking is one of the main processing technologies in refineries. It mainly uses heavy distillates such as wax oil under high pressure, hydrogenation and catalysts to undergo a series of reactions such as hydrotreating and hydrocracking to achieve heavy oil and light oil. purpose. Hydrocracking will produce a certain amount of C1-C4 light hydrocarbons, with a yield of about 3-8wt%. The recovery of light hydrocarbons in conventional hydrocracking units is mainly for the recovery of liquefied gas (C3 / C4) components, and the process settings are relatively perfect. It is mainly equipped with debutanizer, absorption and desorption tower, stabil...

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): C10G5/04C10G5/06C10G5/00C07C7/00C07C7/04C07C7/11C07C9/06C07C9/08C07C9/10C07C9/12
CPCC10G5/06C10G5/04C10G5/00C07C7/005C07C7/04C07C7/11C10G2300/202C10G2300/207C10G2400/04C10G2400/02C07C9/06C07C9/08C07C9/10C07C9/12
Inventor 黄孟旗吴迪姚爱智郝少博刘凯祥
Owner SINOPEC ENG
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