Method for vacuum pressure and temperature varying coupling adsorbing and trapping carbon dioxide in flue gas

A carbon dioxide and flue gas technology, applied in chemical instruments and methods, through adsorption, separation methods, etc., can solve the problems of high cost of adsorption and capture, high energy consumption, low purity, and rising costs

Inactive Publication Date: 2010-06-23
EAST CHINA UNIV OF SCI & TECH
View PDF0 Cites 30 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In view of this, there is an urgent need in the art for a novel method for capturing carbon dioxide in flue gas to overcome the CO present in the prior art. 2 The cost and energy cons

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
  • Method for vacuum pressure and temperature varying coupling adsorbing and trapping carbon dioxide in flue gas
  • Method for vacuum pressure and temperature varying coupling adsorbing and trapping carbon dioxide in flue gas
  • Method for vacuum pressure and temperature varying coupling adsorbing and trapping carbon dioxide in flue gas

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Experimental example of adsorption of carbon dioxide in flue gas by vacuum variable pressure variable temperature coupling process, single column experiment, including adsorption, heating, vacuuming, vacuum purging, and cooling cycle to capture CO 2 step. 116 grams of 13X APGIIA zeolite was packed into a stainless steel tube with an inner diameter of 25 mm to a packing height of 350 mm. The 13X-APGIIA zeolite adsorbent was purchased from Shanghai Global Molecular Sieve Co., Ltd., with a pore size of 10A and a particle size of about 2.0mm. The adsorber is designed as a jacket, the inner tube is filled with adsorbent, and the jacket is connected with heat transfer oil to heat and cool the adsorbent in the adsorber. The temperature of the circulating heat transfer oil is controlled by a high and low temperature constant temperature bath.

[0044] Simulated flue gas (15% CO 2 and 85%N 2 ) enters the adsorption tower from the bottom of the tower at nearly normal pressure ...

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 relates to a trapping method of carbon dioxide, namely a method for multi-tower vacuum pressure and temperature varying coupling adsorbing and concentrating the carbon dioxide. The method comprises the following main steps: (a) under the conditions of 10-50 DEG C of temperature and 1.1-5.0 atm of pressure, adopting an adsorbent for adsorbing the carbon dioxide to adsorb the carbon dioxide in flue gas; (b) under the conditions of 80-150 DEG C of temperature and 1-10 kPa of vacuum, desorbing the adsorbent in step (a), and cooling the obtained gas containing the carbon dioxide to enter a gas collector. The method has the advantages that under the auxiliary condition of heating temperature rising, the adsorbent is desorbed in vacuum, and the power consumption and the cost of vacuum equipment are reduced; pipe-shell absorbers or the absorbers of enhanced heat transfer elements of tower inbuilt fin type, coils, and the like to increase the indirect heating and cooling efficiency; and adopting low-temperature exhaust gas discharged from the top end of an adsorption tower to directly regenerate a post adsorbent in a bed to shorten the cooling time. Compared with the prior art, the method reduces the trapping and post processing cost of the carbon dioxide.

Description

technical field [0001] The invention relates to a method for capturing carbon dioxide (greenhouse gas), in particular to a method for capturing carbon dioxide in flue gas coupled with vacuum variable pressure and variable temperature. Background technique [0002] The fourth report issued by the Intergovernmental Panel on Climate Change (IPCC) of the United Nations Environment Program in early 2007 pointed out that climate warming is an undoubted fact, and more than 90% of the possibilities are that human activities have caused climate change. Global greenhouse gas emissions due to human activities have increased since industrialization, increasing by 70% between 1970 and 2004, and global atmospheric carbon dioxide (CO 2 ) concentration has increased from about 280ppm in the pre-industrial era to 379ppm in 2005, while CO emitted into the atmosphere 2 3 / 4 of that is caused by the burning of fossil fuels. Globally, 6 billion tons of CO per year must be avoided, according to ...

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
IPC IPC(8): B01D53/047C01B31/20C01B32/50
CPCY02C10/08Y02A50/20Y02C20/40Y02P20/151
Inventor 李平于建国刘振梁辉宋兴福
Owner EAST CHINA UNIV OF SCI & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap