Non-emitting engines with oxyfuel combustion and carbon capture system

Patent metadata

Field	Value
Publication number	US-12480437-B2
Application number	US-202318832454-A
Country	US
Kind code	B2
Filing date	Jan 20, 2023
Priority date	Feb 9, 2022
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

An engine system includes an oxygen capture system including at least one adsorbent material, an internal combustion engine fluidly coupled to the oxygen capture system, an exhaust processing system fluidly coupled to the internal combustion engine, the exhaust processing system including a catalytic system, at least one cooler and at least one gas/liquid separator, and a carbon capture system fluidly coupled to the exhaust processing system and the internal combustion engine, the carbon capture system including a carbon dioxide condenser and a carbon dioxide storage.

First claim

What is claimed is:

1 . An engine system comprising:
an oxygen capture system comprising at least one adsorbent material; an internal combustion engine fluidly coupled to the oxygen capture system; an exhaust processing system fluidly coupled to the internal combustion engine, the exhaust processing system comprising a catalytic system, at least one cooler, and at least one gas/liquid separator; a carbon capture system fluidly coupled to the exhaust processing system and the internal combustion engine, the carbon capture system comprising a carbon dioxide condenser and a carbon dioxide storage; a compressor fluidly coupled to the at least one gas/liquid separator and receiving processed exhaust from the at least one gas/liquid separator; and a second cooler fluidly coupled to the compressor and receiving the processed exhaust from the compressor; wherein the carbon dioxide condenser is fluidly coupled to the second cooler and receives the processed exhaust from the second cooler; wherein the carbon dioxide condenser produces liquid or partial liquid carbon dioxide from the processed exhaust; and wherein the carbon dioxide storage is fluidly coupled to the carbon dioxide condenser and receives the liquid or partial liquid carbon dioxide from the carbon dioxide storage and stores the liquid or partial liquid carbon dioxide.

2 . The engine system of claim 1 , further comprising an air intake;
wherein the oxygen capture system is fluidly coupled to the air intake and receives intake air from the air intake and passes the intake air through the at least one adsorbent material, separating out oxygen from the intake air.

3 . The engine system of claim 1 , wherein:
the catalytic system is fluidly coupled to the internal combustion engine and receives exhaust from the internal combustion engine; and the catalytic system comprises an oxidation catalyst that bonds unburned hydrocarbons in the exhaust with unused oxygen.

4 . The engine system of claim 1 , wherein:
the catalytic system is fluidly coupled to the internal combustion engine and receives exhaust from the internal combustion engine; the exhaust processing system includes at least one exhaust valve, the at least one exhaust valve fluidly coupled to the catalytic system and receiving the exhaust from the catalytic system; the at least one cooler is fluidly coupled to the at least one exhaust valve, the at least one cooler receiving the exhaust from the at least one exhaust valve, and produces water; and the at least one gas/liquid separator is fluidly coupled to the at least one cooler, the at least one gas/liquid separator receiving the exhaust and the water from the at least one cooler, and separating the exhaust from the water.

5 . The engine system of claim 1 , wherein the carbon capture system receives the processed exhaust from the exhaust processing system, passes the processed exhaust through the compressor producing compressed gaseous carbon dioxide, and stores the compressed gaseous carbon dioxide in the carbon dioxide storage.

6 . An emissions treatment method comprising:
receiving, by an oxygen capture system, intake air and hot exhaust; separating, by the oxygen capture system, oxygen from the intake air; receiving, by a first cooler, the oxygen from the oxygen capture system; cooling, by the first cooler, the oxygen to form cooled oxygen; receiving, by an internal combustion engine, the cooled oxygen from the first cooler; receiving, by the internal combustion engine, fuel; combusting, by the internal combustion engine, the cooled oxygen and the fuel to produce the hot exhaust; cooling, by a second cooler, the hot exhaust to form cooled exhaust; separating, by a gas/liquid separator, the cooled exhaust to form gas and a liquid; compressing, by a compressor, the gas to form a compressed gas; cooling, by a third cooler, the compressed gas to form a cooled compressed gas; condensing, by a heat exchanger, the cooled compressed gas and a storage gas to form a condensed cooled compressed gas; receiving, by a carbon storage, the condensed cooled compressed gas; and providing, by the carbon storage, the storage gas to the heat exchanger.

7 . The emissions treatment method of claim 6 , further comprising providing, by the heat exchanger, a portion of the condensed cooled compressed gas to the internal combustion engine.

8 . The emissions treatment method of claim 6 , further comprising:
cooling, by the carbon storage, the condensed cooled compressed gas to form liquid carbon dioxide; and storing, by the carbon storage, the liquid carbon dioxide.

9 . The emissions treatment method of claim 6 , further comprising receiving, by a catalytic system, the hot exhaust;
wherein the oxygen capture system receives the hot exhaust downstream of the catalytic system; and wherein the second cooler receives the hot exhaust downstream of the catalytic system.

10 . The emissions treatment method of claim 6 , further comprising discharging, by the oxygen capture system, depleted air to atmosphere.

11 . An engine system comprising:
an internal combustion engine configured to provide hot exhaust; an oxygen absorber configured to receive intake air, receive the hot exhaust from the internal combustion engine, and provide oxygen enriched exhaust; a first cooler configured to receive the oxygen enriched exhaust from the oxygen absorber and provide cooled oxygen enriched exhaust to the internal combustion engine; a second cooler configured to receive the hot exhaust from the internal combustion engine and provide cooled exhaust; and a gas/liquid separator configured to receive the cooled exhaust from the second cooler, provide exhaust, and provide water; wherein the internal combustion engine is further configured to receive the exhaust from the gas/liquid separator.

12 . The engine system of claim 11 , wherein the internal combustion engine is further configured to combust hydrogen.

13 . The engine system of claim 12 , wherein the internal combustion engine is further configured to receive an inert gas.

14 . The engine system of claim 13 , wherein the internal combustion engine is configured to receive other than nitrogen as the inert gas.

15 . The engine system of claim 11 , wherein the gas/liquid separator is configured such that the water is provided to atmosphere.

16 . The engine system of claim 15 , wherein:
the oxygen absorber is further configured to provide warm oxygen depleted air; and the warm oxygen depleted air is expelled to atmosphere.

Assignees

• Cummins Inc

Inventors

• Daggolu Prashant Reuben
• Pendray John Robert
• Yezerets Aleksey

Classifications

• F01N2260/022

  using air · CPC title

• F01N3/103

  Oxidation catalysts for HC and CO only · CPC title

• F01N3/0857

  Carbon oxides · CPC title

• Y02T10/12

  Improving ICE efficiencies · CPC title

• F02B47/10 Primary

  Circulation of exhaust gas in closed or semi-closed circuits, e.g. with simultaneous addition of oxygen · CPC title