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

A method and device for deep removal of siloxane from landfill gas/biogas

A technology for landfill gas and siloxane, which is used in gas fuel, petroleum industry, waste fuel, etc., can solve the problems of high energy consumption and high cost, and achieve the effects of simple operating conditions, large processing load and high safety.

Active Publication Date: 2017-04-05
北京中清绿智科技有限公司
View PDF7 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Patent CN201110338779.4 "A Device for Stable and Continuous Removal of Siloxane in Combustible Gas" introduces a method and device for removing siloxane in biogas by condensation separation method. This method needs to be carried out at low temperature. Refrigeration requires high energy consumption and high cost

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 method and device for deep removal of siloxane from landfill gas/biogas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0032] The siloxane concentration is 120mg / Nm 3 After the temperature of the landfill gas is controlled at 20°C, it is pressurized by the gas compressor 1 and then passed into the gas-liquid separator 2 to remove water, foam and solid particles; the liquid settles in the lower part of the gas-liquid separator 2 and passes through The liquid level control valve 16 discharges; the solid dirt settles at the bottom of the separator and is discharged through the sewage outlet 18; the middle part of the separator is provided with a defoaming plate 19, which is used to eliminate the air bubbles on the gas-liquid interface, so as to facilitate the overflow of gas from the liquid; The gas passes through the mist catcher 17 to remove small mist droplets, and then passes through the pressure control valve 15 into the sodium carbonate solution storage tank 3 to remove hydrogen sulfide in the landfill gas.

[0033] The landfill gas from which water, foam, solid impurities and hydrogen sulf...

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
areaaaaaaaaaaa
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of gas separation, and particularly, relates to a method and device for deeply removing siloxane from garbage landfill gas / methane. The garbage landfill gas after pressurization is introduced into a gas-liquid separator and an absorption tank loaded with a sodium carbonate solution, and free water, foams, solid particles and hydrogen sulfide in the landfill gas are removed; the landfill gas obtained after treatment is introduced into a membrane separation treatment unit, and the landfill gas containing D4 and D5 is subjected to membrane separation operation; the mixed gas passes through a hollow fiber membrane contactor of the membrane separation treatment unit, D4 and D5 permeate out from a permeation side under the action of membrane silk internal and external pressure difference and concentration difference and are introduced into an n-hexane organic solvent to be dissolved, and siloxane is recycled; the treated landfill gas containing a small amount of D4 and D5 is introduced into a reaction tank loaded with a dimethyl ketone peroxide solution, and D4 and D5 in the landfill gas are further removed; the treated landfill gas is introduced into a drying tower, water vapor is removed, pure methane gas is obtained, the methane is introduced into a gas storage tank, and the methane gas is stored.

Description

technical field [0001] The invention belongs to the field of gas separation, and in particular relates to a method and a device for removing octamethylcyclotetrasiloxane (D4) and decamethylcyclopentasiloxane (D5) in landfill gas and recovering methane. Background technique [0002] The main components of landfill gas (biogas) are methane and carbon dioxide, of which methane is about 45%~50%, carbon dioxide is 40%~60%, and it also contains a small amount of harmful impurities including hydrogen sulfide and siloxane, etc.; processed The treated landfill gas can be directly supplied to industrial and greenhouse users, among which the thermal efficiency of the biogas used for heating or industrial production is the highest; after the landfill gas is collected, it is pressurized by a compressor and transported to an internal combustion unit, where it is converted into The electric energy is transmitted to the power booster station and then sent to the local power grid for use by ...

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): C10L3/10
CPCY02E50/30
Inventor 李恩田李天洲王树立赵会军
Owner 北京中清绿智科技有限公司
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