Carbon dioxide absorbent fluid for a carbon dioxide sequestering system on a vehicle

• US 8,696,804 B2
• Filed: 04/12/2013
• Issued: 04/15/2014
• Est. Priority Date: 12/29/2010
• Status: Active Grant

• Current Assignee: Delphi Technologies Ip Limited (BorgWarner Incorporated)
• Original Assignee: Delphi Technologies, Inc. (BorgWarner Incorporated)
• Inventors: Ihms, David W., Myers, Bruce A.
• Primary Examiner(s): Clemente, Robert
• Assistant Examiner(s): SHAO, PHILLIP Y
• Application Number:
  US13/861,843
• Publication Number:
  US 20130220130A1
• Time in Patent Office: 368 Days
• Field of Search: None
• US Class Current: 96/234
• CPC Class Codes: B01D 2257/504 Carbon dioxide
• CPC Class Codes: B01D 53/1475 Removing carbon dioxide
• CPC Class Codes: B01D 53/92 of engine exhaust gases exhaust or silencing apparatus for internal combustion engines, machines or engines in general, having means for purifying, rendering innocuous or otherwise treating exhaust gases F01N3/00
• CPC Class Codes: F01N 2240/02 a heat exchanger
• CPC Class Codes: F01N 2570/10 Carbon or carbon oxides
• CPC Class Codes: F01N 3/04 using liquids
• CPC Class Codes: F01N 3/0857 Carbon oxides
• CPC Class Codes: F01N 3/0871 Regulation of absorbents or adsorbents, e.g. purging by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235
• CPC Class Codes: F01N 5/025 the device being thermoelectric generators
• CPC Class Codes: Y02C 20/40 of CO2
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies

Abstract

A carbon dioxide storage means stores the carbon dioxide released in a heat exchanger. The heat exchanger cools the exhaust gas emitted by the internal combustion engine, and includes a thermal electric generator (TEG) configured to couple thermally the exhaust gas chamber to the absorber fluid chamber in a manner effective to heat the CO2 absorbent fluid by heat from the engine exhaust to release CO2 gas from the CO2 absorbent fluid and generate electricity in response to a temperature difference therebetween. The CO2 absorbent fluid is one of: a) an aliphatic di-functional nitrile (e.g. pimelonitrile); and b) an oligomeric poly-acrylonitrile (PAN).

Claims

1. A system for sequestering carbon dioxide gas from exhaust gas emitted by an internal combustion engine, said system comprising:

a scrubber tank containing a carbon dioxide absorbent fluid and configured to bubble the exhaust gas emitted by the internal combustion engine through the fluid to absorb carbon dioxide gas from the exhaust gas; and

a heat exchanger configured to heat the fluid with heat from the exhaust gas emitted by the internal combustion engine to release carbon dioxide gas from the fluid, wherein the fluid is returned to the scrubber tank after a portion of the carbon dioxide gas is removed from the fluid by the heat exchanger, wherein said fluid is essentially an oligomeric poly-acrylonitrile (PAN).

2. The system in accordance with claim 1, wherein the oligomeric poly-acrylonitrile (PAN) has a molecular weight of 300 g/mole to 500 g/mole.