Supercharge Your Innovation With Domain-Expert AI Agents!

Methane-carbon dioxide-nitrogen or hydrogen multi-component separation method and device

A carbon dioxide, separation method technology, applied in separation methods, chemical instruments and methods, alkali metal oxides/hydroxides, etc., can solve problems such as high energy consumption, low enrichment efficiency, and resource consumption

Active Publication Date: 2016-07-06
TAIYUAN UNIV OF TECH
View PDF3 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Currently, CH 4 The enrichment process mainly adopts the technology of low temperature separation, membrane separation and hydrate enrichment, but there is a problem of consumption of CH 4 Resources, low enrichment efficiency and high energy consumption
which is more because of N 2 with CH 4 There are very close kinetic diameters, and they are all non-polar gases, so there is no suitable adsorbent for ordinary PSA to separate CH 4 , N 2 and CO 2

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
  • Methane-carbon dioxide-nitrogen or hydrogen multi-component separation method and device
  • Methane-carbon dioxide-nitrogen or hydrogen multi-component separation method and device
  • Methane-carbon dioxide-nitrogen or hydrogen multi-component separation method and device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Preparation of flexible material TUTCH-1

[0024] Weigh 0.5g ± 0.001g of copper nitrate trihydrate, measure 10mL ± 0.001mL of deionized water, place in a beaker, stir and mix for 5min to form a 2mol / L copper nitrate aqueous solution;

[0025] Weigh 0.3g±0.001g of 2,5-dihydroxybenzoic acid, measure 10mL±0.001mL of deionized water, put it in a beaker, stir and mix for 5min to form a 2mol / L aqueous solution of 2,5-dihydroxybenzoic acid;

[0026] Weigh 0.312g±0.001g of 4,4'-bipyridine, measure 10mL±0.001mL of ethanol, put it in a beaker, stir and mix for 5min to form a 2mol / L 4,4'-bipyridine ethanol solution;

[0027]Measure 20mL±0.001mL of copper nitrate aqueous solution and put it in a beaker; measure 20mL±0.001mL of 2,5-dihydroxybenzoic acid aqueous solution into the beaker; measure 40mL±0.001mL of 4,4'-bipyridine ethanol solution and slowly Drop into the beaker, stir while dripping, the dropping speed is 0.5mL / min, mix evenly for 30min.

[0028] The beaker filled with...

Embodiment 2

[0032] Preparation of flexible material TUTCH-2

[0033] Weigh 0.7g ± 0.001g of copper tetrafluoroborate hexahydrate, measure 10mL ± 0.001mL of deionized water, put it in a beaker, stir and mix for 5min, and form a 2mol / L copper tetrafluoroborate aqueous solution;

[0034] Weigh 0.312g ± 0.001g of 4,4'-bipyridine, measure 10mL ± 0.001mL of ethanol, place in a beaker, stir and mix for 5min to form a 2mol / L 4,4'-bipyridine ethanol solution.

[0035] Measure 20mL±0.001mL of copper tetrafluoroborate aqueous solution and put it in a beaker; measure 40mL±0.001mL of 4,4'-bipyridine ethanol solution and slowly drop it into the beaker, stirring while dropping, the dropping speed is 0.5mL / min, mix well for 30min.

[0036] The beaker filled with the solution was placed in a temperature-controlled magnetic stirrer, and treated at a constant temperature of 25° C. for 120 minutes; the reacted solution was kept at a constant temperature of 25° C., and sealed for 48 hours.

[0037] Filter ...

Embodiment 3

[0043] Embodiment 3 and embodiment 4 are methods for separating methane-carbon dioxide-nitrogen mixed gas, and embodiments 5 and 6 are methods for separating methane-carbon dioxide-hydrogen gas mixture. Such as Figure 4 As shown, the PSA equipment used includes methane-carbon dioxide-nitrogen mixed feed gas storage tank 1, No. 1 adsorption bed 2, No. 2 adsorption bed 3 and gas collection station 4. The outlet of storage tank 1 is connected to the inlet of quality control flowmeter 5, No. 1 adsorption bed 2 and No. 2 adsorption bed 3 are connected in parallel and equipped with temperature control tank 6 respectively. The first adsorption bed 2 and the second adsorption bed 3 are filled with flexible material TUTCH-1 or flexible material TUTCH-2 as the adsorbent. The inlet of each adsorption bed is connected to the outlet of quality control flow meter 5, the outlets of two adsorption beds are connected to back pressure valve 7, and the gas collection station 4 is connected to t...

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
lengthaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to View More

Abstract

The invention relates to a methane-carbon dioxide-nitrogen gas or hydrogen gas multi-component separation method and device. The separation method comprises the following steps: by taking flexible materials TUTCH-1 and TUTCH-2 as adsorbents, controlling the temperature and the pressure of the interior of the separation device to realize the purpose of separating CO2, N2 and H2. The separation device comprises a first adsorption bed and a second adsorption bed, wherein porous elastic polyethylene fiber buffer layers are arranged on the front side and the back side of the first adsorption bed and the second adsorption bed so as to effectively ensure the stabilization of a gas flow rate and the smoothness of a gas path. According to the methane-carbon dioxide-nitrogen gas or hydrogen gas multi-component separation method and device, methane in raw gas is completely collected in a product methane-rich gas, and the loss ratio of the methane is very low; meanwhile, the separation method can completely remove CO2 and N2, and the methane concentration of the obtained methane-rich gas is very high and generally can be up to more than 90%, preferably more than 98%. The obtained methane-rich gas with the methane concentration of more than 98% can be directly applied to LNG (liquefied natural gas) fuel or CNG (compressed natural gas) for vehicles.

Description

technical field [0001] The invention relates to a gas separation technology, in particular to a methane-carbon dioxide-nitrogen or hydrogen multi-component separation method and a used device. Background technique [0002] In recent years, the rapid development of unconventional natural gas represented by low-concentration coalbed methane (drained coalbed methane), low-saturation natural gas and shale gas has attracted worldwide attention. Occupy a pivotal strategic position in the development. These unconventional natural gas are mixed with a large amount of impurity gases such as nitrogen, carbon dioxide and water vapor during the exploitation process, among which CO 2 , N 2 The presence of will significantly reduce the CH 4 combustion efficiency. Therefore, it is particularly important to effectively enrich methane in low concentrations. [0003] Currently, CH 4 The enrichment process mainly adopts the technology of low temperature separation, membrane separation an...

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): B01D53/047B01J20/22B01J20/28B01J20/30C10L3/10
CPCY02C20/40
Inventor 李晋平杨江峰李立博陈杨
Owner TAIYUAN UNIV OF TECH
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com