Devices, systems, facilities and processes for co2 capture/sequestration and conventional hydrogen generation from blast furnace facilities
AssigneeNext Carbon Solutions, LLC
InventorsVikrum Subra, Ivan Van der Wait, Ben Heichelbech
Life of this patent
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Abstract
A blast furnace facility includes a process for capturing and sequestering CO2 generated from the facility process, generating hydrogen from hot blast furnace gas, and using blast furnace gas as methanol feed. The CO2 rich streams from the facility are sent to sequestration of some form via a sequestration compressor, thereby reducing the overall emissions from the facility. The other products generated by the facility are used as methanol feedstock and to produce hydrogen.
Claims23
A system for treating, compressing, and sequestering carbon dioxide (CO2) derived from flue gas of a blast furnace facility, generating hydrogen from hot blast furnace gas, and using blast furnace gas as methanol feed, the system comprising:
- a flue gas Heat Recovery Steam Generator (HRSG) unit configured to receive the flue gas from process units of the blast furnace facility and to generate steam;
- a heat exchanger configured to cool the flue gas from the HRSG unit using ambient air from an air blower;
- a CO2 absorber configured to receive the flue gas from the heat exchanger and to remove CO2 from the flue gas, the CO2 absorber including an absorbent for absorbing CO2 from the flue gas;
- a sequestration compression unit configured to compress the flue gas into compressed CO2 rich stream and to convey the compressed CO2 rich stream towards at least one of a sequestration site, a storage tank, or an industrial user, the sequestration compression unit comprising a sequestration compressor that is one of electric driven, steam driven, or supercritical CO2 driven;
- a blast furnace HRSG unit configured to receive the blast furnace gas and to generate steam;
- a steam methane reformer (SMR) unit configured to produce hydrogen from the steam from the blast furnace HRSG unit and a feed gas, the SMR unit being configured to direct SMR flue gas to a tie-in upstream of the gas-air heat exchanger;
- a methanol feed header configured to receive the blast furnace gas from the blast furnace HRSG unit, the hydrogen from the SMR unit, and the flue gas supplied from downstream of a CO2 regenerator.
A process for treating, compressing, and sequestering carbon dioxide (CO2) derived from flue gas of a blast furnace facility, generating hydrogen from hot blast furnace gas, and using blast furnace gas as methanol feed, the process comprising:
- receiving, at a Heat Recovery Steam Generator (HRSG) unit, the flue gas from process units of the blast furnace facility and generating steam;
- cooling, at a heat exchanger, the flue gas from the HRSG unit;
- absorbing, at a CO2 absorber, CO2 from the flue gas;
- compressing, at a sequestration compression unit, the flue gas;
- conveying, by the sequestration compression unit, the compressed flue gas towards at least one of a sequestration site, a storage tank, or an industrial user;
- receiving, at a blast furnace HRSG unit, the blast furnace gas and generating steam;
- producing, at a steam methane reformer (SMR) unit, hydrogen from the steam from the blast furnace HRSG unit and a feed gas;
- receiving, at a methanol feed header, the blast furnace gas from the blast furnace HRSG unit, the hydrogen from the SMR unit, and the flue gas from downstream of a CO2 regenerator.
A process for treating, compressing, and sequestering carbon dioxide (CO2) derived from flue gas of a blast furnace facility, generating hydrogen from hot blast furnace gas, and using blast furnace gas as methanol feed, the process comprising:
- cooling, at a heat exchanger, the flue gas directly or indirectly from process units of the blast furnace facility;
- absorbing, at a CO2 absorber, CO2 from the flue gas;
- compressing, at a sequestration compression unit, the flue gas;
- conveying, by the sequestration compression unit, the compressed flue gas towards at least one of a sequestration site, a storage tank, or an industrial user;
- receiving, at a blast furnace HRSG unit, the blast furnace gas and generating steam;
- producing, at a steam methane reformer (SMR) unit, hydrogen from the steam from the blast furnace HRSG unit and a feed gas;
- receiving, at a methanol feed header, the blast furnace gas from the blast furnace HRSG unit, the hydrogen from the SMR unit, and the flue gas directly or indirectly from the CO2 absorber.
Dependencies are inferred from the claim text.