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

A separation process of petroleum associated gas

A technology for petroleum associated gas and associated gas, which is applied in the petroleum industry, separation methods, semi-permeable membrane separation, etc., can solve the problems of high cost, inability to condense methane, complicated and complicated devices, etc., and achieves improved efficiency, high selectivity, and separation. fast effect

Active Publication Date: 2021-07-13
杭州勃扬能源设备有限公司
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] During the recovery and utilization of associated gas, CO 2 Separation is also a very important pretreatment step. The traditional method adopts the process route of absorption, adsorption separation, and condensation. The equipment is cumbersome and complicated, and the cost is high. Moreover, under certain temperature and pressure conditions, the associated gas is limited by the gas-liquid balance, and part of the methane cannot be produced. condensation

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

[0027] Embodiment 1: the preparation one of composite film:

[0028] This embodiment is to prepare the composite membrane used in the membrane separation step of the petroleum associated gas separation process, first prepare the gel filtration layer of the middle layer:

[0029] The lead-silver alloy plate is used as the anode, and the rolled aluminum plate wrapped with a conductive sponge with a porosity of 60% is used as the cathode, and they are suspended in a zinc sulfate solution in parallel, and a 12V direct current is applied. When the elemental zinc fills the gap of the sponge, the electrolysis ends. Take out the sponge, soak it in a glycerin-ethanol solution with a glycerin concentration of 15wt% for 3 hours, place it in an oven at 60°C for 1 hour, and then put it in a muffle furnace at 250°C for 80 minutes, take it out, and use a deionized Wash it with water, dry it, and chop it to get a spongy skeleton;

[0030] The sponge-like skeleton is prepared by electro-depos...

Embodiment 2

[0037] Embodiment 2: the preparation two of composite film:

[0038] This embodiment is to prepare the composite membrane used in the membrane separation step of the petroleum associated gas separation process, first prepare the gel filtration layer of the middle layer:

[0039] The lead-silver alloy plate is used as the anode, and the rolled aluminum plate wrapped with a conductive sponge with a porosity of 70% is used as the cathode, and they are suspended in the zinc sulfate solution in parallel, and 12V DC is applied. When the elemental zinc fills the gap of the sponge, the electrolysis ends. Take out the sponge, soak it in a glycerin-ethanol solution with a glycerol concentration of 20wt% for 3 hours, place it in an oven at 55°C for 2 hours, and then place it in a muffle furnace at 300°C for 60 minutes and take it out, and use a deionized Wash it with water, dry it, and chop it to get a spongy skeleton;

[0040] Dissolve 40 g of 1-butyl-3-vinylimidazole bromide in 300 ml o...

Embodiment 3

[0044] Example 3: Preparation of composite membrane Three:

[0045] The present embodiment is to prepare a composite membrane for the membrane separation step of the oil-associated gas separation process. First, the gel filtration layer of the intermediate layer is prepared:

[0046] The lead-silver alloy plate is used as the anode, and the rolled aluminum plate wrapped with the conductive sponge with porosity of 80% is used as the cathode. It is suspended in a zinc sulfate solution in parallel, and 12V DC is applied. When the elemental zinc fills the sponge gap, the electrolysis ends. The sponge was taken out, soaked in a glycerol-ethanol solution with a glycerin concentration of 25wt% for 4 hours, placed in an oven at 50°C for 2 hours, and then placed in a muffle furnace at 350°C for 50 minutes and then taken out. After washing with water, dry it, and chop it up to obtain a spongy skeleton;

[0047] Dissolve 40 g of 1-butyl-3-vinylimidazole bromide in 300 ml of acetonitrile...

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
thicknessaaaaaaaaaa
porosityaaaaaaaaaa
porosityaaaaaaaaaa
Login to View More

Abstract

The invention discloses a petroleum associated gas separation process, which belongs to the technical field of associated gas separation. The separation process includes the following steps: a pretreatment step, a gas-liquid separation step, a CO 2 separation step, gas recovery step; the CO 2 In the separation step, a composite membrane is used to separate carbon dioxide. The composite membrane has a three-layer structure with a polysulfone membrane layer on the surface, a gel filtration layer on the middle layer, and a non-woven fabric layer on the bottom layer. The petroleum associated gas separation process disclosed by the invention can separate carbon dioxide and methane. The composite membrane used in the membrane separation step has high porosity and selectivity, high permeation flux, and is not easily deformed. The separation process disclosed by the invention has good separation effect, compact equipment, and environmental friendliness.

Description

technical field [0001] The invention relates to the technical field of separation of associated gas, in particular to a separation process of petroleum associated gas. Background technique [0002] Petroleum-associated gas is a combustible mixture composed of low-molecular-weight saturated hydrocarbon-based hydrocarbon gas and a small amount of non-hydrocarbon gas naturally in porous formations under the surface, and it is often associated with crude oil. Strictly speaking, petroleum-associated gas is also petroleum, which is the gaseous form of petroleum. Petroleum-associated gas contains organic vapor, which is mainly methane, and also contains ethane, propane, butane, pentane and other hydrocarbons; petroleum-associated gas Gas components also include inert gases: nitrogen, carbon dioxide, hydrogen sulfide, helium, oxygen, hydrogen and other gases, mainly carbon dioxide. At present, the discharge of oilfield associated gas, especially in small and remote areas, has attra...

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): B01D69/12B01D69/10B01D71/68B01D53/22
CPCC10L3/101C10L3/104Y02C20/40
Inventor 李可心卢嘉威李士华
Owner 杭州勃扬能源设备有限公司
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