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US 12,440,797 B2Granted
Carbon capture systems
AssigneeEnhanced Energy Group LLC
InventorPaul M. Dunn
Life of this patent
Estimating the term…
Abstract
A carbon capture system can include a plurality of CO2 thermal swing adsorption (TSA) beds. The plurality of CO2 TSA beds can include at least a first TSA bed, a second TSA bed, and a third TSA bed configured to capture CO2 within a capture temperature range and to regenerate the captured CO2 at a regeneration temperature range above the capture temperature range. The carbon capture system can include a plurality of valves and associated flow paths configured to allow switching operational modes of each of the first, second, and third TSA beds.
Claims18
A carbon capture system, comprising:
- an engine system that includes cooled exhaust recirculation and oxygen augmentation, wherein the engine system is configured to operate with a semi-closed cycle;
- a first stage compressor that receives a portion of the cooled exhaust that is not recirculated;
- a dehydration subsystem that includes two or more dehydration thermal swing adsorption (TSA) beds;
- and
- a two stage pressure swing adsorption (PSA) CO2 capture system that includes:
- a three vessel PSA process that provides a first stage outlet flow with CO2 at a first purity;
- a second stage compressor that receives the first stage outlet flow;
- and
- a two vessel PSA process, downstream from the three vessel PSA process, that provides a second stage outlet flow with CO2 at a second purity greater than the first purity.
6 more elements
A carbon capture system, comprising:
- a dehydration subsystem to remove water from a portion of an engine exhaust, the dehydration subsystem including two or more dehydration thermal swing adsorption (TSA) beds;
- a plurality of TSA beds for CO2 capture to be fed by the dehydration subsystem, the plurality of TSA beds including at least:
- a first TSA bed configured to capture CO2 within a capture temperature range and to regenerate captured CO2 at a regeneration temperature range above the capture temperature range:
- a second TSA bed configured to capture CO2 within the capture temperature range and to regenerate captured CO2 at the regeneration temperature range;
- and
- a third TSA bed configured to capture CO2 within the capture temperature range and to regenerate captured CO2 at the regeneration temperature range;
- a plurality of valves and associated flow paths configured to allow switching operational modes of each of the first TSA bed, the second TSA bed, and the third TSA bed;
- an engine system that includes cooled exhaust recirculation and oxygen augmentation, wherein the engine system is configured to operate with a semi-closed cycle;
- and
- supplemental combustion downstream of the engine to increase a temperature of the engine exhaust.
7 more elements
A carbon capture system, comprising:
- a dehydration subsystem to remove water from a portion of an engine exhaust, the dehydration subsystem including two or more dehydration thermal swing adsorption (TSA) beds;
- a plurality of TSA beds for CO2 capture to be fed by the dehydration subsystem, the plurality of TSA beds including at least:
- a first TSA bed configured to capture CO2 within a capture temperature range and to regenerate captured CO2 at a regeneration temperature range above the capture temperature range;
- a second TSA bed configured to capture CO2 within the capture temperature range and to regenerate captured CO2 at the regeneration temperature range;
- and
- a third TSA bed configured to capture CO2 within the capture temperature range and to regenerate captured CO2 at the regeneration temperature range:
- a plurality of valves and associated flow paths configured to allow switching operational modes of each of the first TSA bed, the second TSA bed, and the third TSA bed;
- and
- an engine system that is configured to operate with a semi-closed cycle, the engine system including:
- an exhaust heat exchanger that partially cools the engine exhaust;
- and
- an adsorption chiller that is configured to provide cooling to the plurality of TSA beds,
- wherein a first portion of heat from the engine exhaust is used to drive a CO2 turbo that is coupled to the exhaust heat exchanger, and
- wherein a second portion of heat from the engine exhaust is used to drive the adsorption chiller.
11 more elements
A carbon capture system, comprising:
- an engine system that includes cooled exhaust recirculation and oxygen augmentation, wherein the engine system is configured to operate with a semi-closed cycle;
- a first stage compressor that receives a portion of the cooled exhaust that is not recirculated;
- a dehydration subsystem that includes two or more dehydration thermal swing adsorption (TSA) beds;
- and
- a two stage pressure swing adsorption (PSA) CO2 capture system that includes:
- a first PSA process that provides a first stage outlet flow with CO2 at a first purity;
- a second stage compressor that receives the first stage outlet flow;
- and
- a second PSA process that provides a second stage outlet flow with CO2 at a second purity greater than the first purity.
6 more elements
Dependencies are inferred from the claim text.