Device and method for capturing carbon dioxide in flue gas
A carbon dioxide and flue gas technology, applied in chemical instruments and methods, separation methods, inorganic chemistry, etc., can solve the problems of large water consumption, low carbon dioxide recovery rate, low recovery rate, etc., and achieve high recovery rate and low capture The effect of comprehensive cost and low capture energy consumption
Pending Publication Date: 2022-05-31
中膜(浙江)环保科技有限公司
View PDF2 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
[0005] In the patent with the publication number CN112516757A, a three-stage three-stage membrane separation system and method for flue gas carbon dioxide capture are disclosed. Compression, high energy consumption; In addition, the membrane separation process in this patent requires humidification, which consumes a lot of water; in addition, in the case of low carbon dioxide flue gas concentration, the recovery rate of carbon dioxide is not high
[0006] In the patent with the publication number CN107899377A, a device and method for capturing and recovering carbon dioxide in flue gas are disclosed. However, the recovery rate of carbon dioxide in this patent is not high. For example, the recovery rate of the first stage of membrane separation of carbon dioxide is calculated to be only 58.00%, the calculation method is: first stage membrane separation permeate gas flow rate 1332 * first stage membrane separation permeate gas carbon dioxide content 54.19% / (feed gas flow rate 10000 * raw material gas carbon dioxide content 12.37%); second stage membrane separation The recovery rate of carbon dioxide is calculated to be only 54.00%, and the calculation method is: the flow rate of the second-stage membrane separation permeate gas is 699*the carbon dioxide content in the second-stage membrane separation permeate gas is 97.11% / (the feed gas flow rate is 10000*the carbon dioxide content in the feed gas is 12.37 %)
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment 1
[0058] Carry out a capture test on a certain flue gas to be treated, and calculate figure 1 The capture effect of the shown device on carbon dioxide in the flue gas, and the material balance calculation results are shown in Table 1.
[0059] Table 1
[0060]
[0061] In Example 1, the carbon dioxide concentration in the raw flue gas is 15%, and the carbon dioxide concentration after preliminary concentration is 55.5%, which meets the technological requirements for further utilization.
[0062] Calculated carbon dioxide recovery = 252*55.5% / (1000*15.0%)=93.2%.
Embodiment 2
[0064] Carry out a capture test on a certain flue gas to be treated, and calculate figure 1 Table 2 shows the effect of the device shown on the capture of carbon dioxide in the flue gas, and the results of the material balance calculation are shown in Table 2.
[0065] Table 2
[0066]
[0067] In Example 2, the carbon dioxide concentration in the raw flue gas was 15%, and the carbon dioxide concentration was 95.4% after several times of concentration, which met the technological requirements for further utilization.
[0068] Calculated carbon dioxide recovery = 144*95.4% / (1000*15.0%)=91.6%.
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
Login to View More Abstract
The invention discloses a device and a method for capturing carbon dioxide in flue gas. Specifically, flue gas to be treated is input into a first membrane separation assembly through a first gas mixing unit, permeable gas of the first membrane separation assembly is input into a second gas mixing unit, non-permeable gas of the first membrane separation assembly is input into the second membrane separation assembly, and permeable gas of the second membrane separation assembly is input into the first gas mixing unit again; to-be-treated gas of the second gas mixing unit is input into a third membrane separation assembly, permeable gas of the third membrane separation assembly is input into a fifth membrane separation assembly, and non-permeable gas of the third membrane separation assembly is input into a fourth membrane separation assembly; and the permeable gas of the fourth membrane separation assembly and the non-permeable gas of the fifth membrane separation assembly are input into the second gas mixed monomer again. The carbon dioxide trapping device provided by the invention still has high carbon dioxide recovery rate under the condition of low carbon dioxide concentration, and the high recovery rate means low trapping energy consumption and low trapping comprehensive cost.
Description
technical field [0001] The present application relates to the technical field of carbon dioxide recovery, in particular to a device and method for capturing carbon dioxide in flue gas. Background technique [0002] Global warming is one of the major environmental problems in the world at present. Among the various greenhouse gases that cause climate change, carbon dioxide has the greatest impact on global warming. Controlling carbon dioxide emissions has become one of the important technical routes to combat climate warming. [0003] High-purity carbon dioxide is an important industrial gas. The separated and captured carbon dioxide can not only be injected into oil and natural gas to improve oil and gas recovery, but also can be widely used in the synthesis of organic compounds and the manufacture of carbonated beverages to realize resource utilization. [0004] Among the current carbon dioxide capture and recovery methods, membrane separation is one of the more effective m...
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
Login to View More Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/22C01B32/50
CPCB01D53/226C01B32/50B01D2053/221B01D2257/504B01D2258/0283Y02P20/151
Inventor 周海明陈静严知银陈忠
Owner 中膜(浙江)环保科技有限公司