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Liquid carbon dioxide absorbent and methods of using the same

a liquid carbon dioxide and absorbent technology, applied in the direction of emission prevention, other chemical processes, separation processes, etc., can solve the problems of unable to vary independently, amine-based systems are not designed for processing large volumes of flue, and the overall cost of electricity for pc plants is 83% higher than the average, so as to achieve low cost, high thermal stability, and low volatility

Inactive Publication Date: 2010-06-24
GENERAL ELECTRIC CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007]Desirably, a CO2 capture technology would be provided that optimizes as many of the above desired properties as possible, yet without causing substantial detriment to other desired properties.

Problems solved by technology

Unfortunately, such amine-based systems were not designed for processing the large volumes of flue gas produced by a PC plant.
Scaling the MEA-based CO2 capture system to the size required for PC plants would result in an 83% increase in the overall cost of electricity for the PC plant.
Applying this technology to all existing PC plants in the US would cost $125 billion per year, making MEA-based CO2 capture an unlikely choice for large-scale commercialization.
Unfortunately, many of the above delineated desired properties interact and / or depend on one another, so that they cannot be varied independently and trade-offs are required.

Method used

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  • Liquid carbon dioxide absorbent and methods of using the same
  • Liquid carbon dioxide absorbent and methods of using the same
  • Liquid carbon dioxide absorbent and methods of using the same

Examples

Experimental program
Comparison scheme
Effect test

examples 1-12

[0035]Reaction of silicon-based materials with CO2 in the presence of a hydroxy-containing co-solvent.

[0036]To illustrate the ability of the hydroxy-containing co-solvent triethylene glycol to enhance the CO2 absorption of various silicon-based materials as well as provide a liquid medium, the following Examples 1-12 were conducted. The silicon-based materials were exposed to 1 atmosphere of CO2 in the presence of, or not in the presence of, the hydroxyl-containing co-solvent triethylene glycol (at 50 wt %, with the exception of example 4 at 75 wt %) at 40° C. for 2 hours (h) with mechanical stirring.

example 2

[0038]2.0194 g of 1,3-Bis(3-aminopropyl)tetramethyldisiloxane and 2.0174 g of triethylene glycol were charged into a flask and allowed to react with CO2 according to the procedure described in Example 1. The total weight gain was 0.4089 g. This corresponded to 114% of the theoretical amount of weight that should have been gained if all the amine groups had reacted with a stoichiometric amount of CO2. The reaction product was a liquid.

example 4

[0040]2.0168 g of aminoethylaminopropyl methylsiloxane oligomer and 4.0292 g of triethylene glycol were charged into a flask and allowed to react with CO2 according to the procedure described in Example 1. The total weight gain was 0.4803 g. This corresponded to 87% of the theoretical amount of weight that should have been gained if all the amine groups had reacted with a stoichiometric amount of CO2. The reaction product was a liquid.

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Abstract

A carbon dioxide absorbent comprising (i) a liquid, nonaqueous silicon-based material, functionalized with one or more groups that either reversibly react with CO2 or have a high-affinity for CO2 is provided and (ii) a hydroxy-containing solvent. The absorbent may be utilized in methods to reduce carbon dioxide in an exhaust gas, and finds particular utility in power plants.

Description

CROSS REFERENCE TO RELATED APPLICATIONS[0001]The present application is a continuation in part of U.S. patent application Ser. No. 12 / 343,905, filed Dec. 24, 2008. The present application is also related to co-pending United States patent application having attorney docket number 237591-1 and filed on even date herewith. Both of these applications are hereby incoporated herein by reference to the extent they are consistent with the definitions utilized herein.STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH & DEVELOPMENT[0002]This invention was made with Government support under grant number DE-NT0005310 awarded by the Department of Energy-NETL. The Government has certain rights in the invention.BACKGROUND[0003]Pulverized coal (PC) power plants currently produce over half the electricity used in the United States. In 2007, these plants emitted over 1900 million metric tons of carbon dioxide (CO2), and as such, accounted for 83% of the total CO2 emissions from electric power generati...

Claims

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Application Information

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IPC IPC(8): B01D53/14C09K3/00
CPCB01D53/1475B01D53/1493Y02C10/06F23J2219/40F23J2215/50Y02A50/20Y02C20/40B01D2252/202B01D2252/2025B01D2252/2026B01D2252/2028B01D2252/2041B01D2252/20415B01D2252/20421B01D2252/2056B01D2252/504
Inventor PERRY, ROBERT JAMESO'BRIEN, MICHAEL JOSEPHLAM, TUNCHIAO HUBERTSOLOVEICHIK, GRIGORII LEVKNIAJANSKI, SERGEILEWIS, LARRY NEILRUBINSZTAJN, MALGORZATA IWONAHANCU, DAN
Owner GENERAL ELECTRIC CO
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