US 12,722,135 B2Granted

Plant and method for producing decarbonized oxide or hydroxide using carbonate and renewable power

AssigneeLimenet S.R.L. Societa' Benefit

InventorGiovanni Cappello

Life of this patent

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Abstract

A plant and a method for producing decarbonized oxide or hydroxide using carbonate, water and electric power. The plant includes an electric calciner, a contactor, a pH correction apparatus, and a dosing device. The plant is adapted to receive at the inlet electric power, carbonate and water, and to release at the outlet decarbonized oxide or hydroxide and a buffered ionic mixture rich in bicarbonates, which, once released into the sea, represents the permanent storage for CO2. The plant uses the bicarbonates as permanent CO2 storage in the sea: this storage allows a CO2 storage at low costs and in modular plants.

Claims18

Dependent claims

A plant for producing decarbonized oxide or hydroxide, comprising:

a calciner,
a contactor,
a pH correction apparatus, and
a dosing device, wherein:
the plant is configured for deriving power from one or more of:
electric power, biomass-derived fuels, waste-derived fuels, green hydrogen, and e-fuels;
the calciner is configured to at least receive, at an inlet, a first flow of carbonate and a supply of power, and to at least release, at an outlet, a first calciner outlet flow comprising carbonic gas at a temperature greater than 600 degrees Celsius and a second calciner outlet flow comprising a first flow of oxide;
the plant is configured for obtaining a first flow of buffering substance from the first flow of oxide either by diverting oxide from the first flow of oxide or by reacting water with oxide from the first flow of oxide;
the contactor is adapted to at least receive, at the inlet, carbonic gas from the first calciner outlet flow, a second flow of carbonate, and a flow of water;
the contactor is further adapted to make the carbonate from the second flow of carbonate react with water and the CO2 present in the carbonic gas according to the following reactions:
CO
2
⁢
(
aq
)
+
H
2
⁢
O
(
l
)
⇌
H
2
⁢
CO
3
⁢
(
aq
)
⇌
H
(
aq
)
+
+
HCO
3
⁢
(
aq
)
-
⁢
and
⁢
CaCO
3
+
CO
2
+
H
2
⁢
O
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
wherein Ca can be substituted with Mg when present in the carbonate, and to release, at a first outlet, at least a first flow of ionic mixture;
the contactor is configured for releasing non-soluble gases at a second outlet;
the dosing device is configured to at least receive, at the inlet, the first flow of buffering substance deriving from the calciner or a buffering substance produced from the first flow of buffering substance, and to at least release, at the outlet, a second flow of buffering substance and a third flow of buffering substance available for use;
and
the pH correction apparatus is configured to at least receive, at the inlet, the second flow of buffering substance or a buffering substance produced from the second flow of buffering substance, and the first flow of ionic mixture, wherein said pH correction apparatus is adapted to make the ionic mixture from the first flow of ionic mixture react with the oxide or the hydroxide from the second flow of buffering substance or the buffering substance produced from the second flow of buffering substance according to the following reactions:
CaO
+
H
2
⁢
O
+
2
⁢
CO
2
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
,
or
⁢
Ca
(
OH
)
2
⁢
(
aq
)
+
2
⁢
CO
2
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
,
and wherein said pH correction apparatus is configured to at least release, at the outlet, a first flow of buffered ionic mixture.

126 more elements

A decarbonized calcination method, comprising:

providing power in one or more of:
electric power, biomass-derived fuels, waste-derived fuels, green hydrogen, and e-fuels;
feeding a calciner with at least power and a first flow of carbonate to obtain calcination of the carbonate according to the reaction:
CaCO
3
→
CaO
+
CO
2
wherein Ca can be substituted with Mg wen resent in the carbonate;
releasing, at an outlet of the calciner, at least a first calciner outlet flow comprising carbonic gas at a temperature greater than 600 degrees Celsius and a second calciner outlet flow comprising a first flow of oxide;
obtaining, at an inlet of a dosing device, either a first flow of buffering substance from the first flow of oxide or a buffering substance produced from the first flow of buffering substance, wherein the first flow of buffering substance comprises either oxide diverted from the first flow of oxide toward the dosing device, or hydroxide formed by reacting water with oxide from the first flow of oxide;
feeding a contactor with at least carbonic gas from a first calciner outlet flow and a predetermined flow of water in order to obtain a first flow of ionic mixture through the reaction:
CO
2
⁢
(
aq
)
+
H
2
⁢
O
(
l
)
⇌
H
2
⁢
CO
3
⁢
(
aq
)
⇌
H
(
aq
)
+
+
HCO
3
⁢
(
aq
)
-
;
releasing at least the first flow of ionic mixture at the outlet of the contactor;
feeding at least the first flow of buffering substance to the dosing device;
releasing at least a predetermined second flow of buffering substance at the outlet of the dosing device;
providing a pH correction apparatus;
feeding the pH correction apparatus at least with the first flow of ionic mixture and either the predetermined second flow of buffering substance or a buffering substance produced from the predetermined second flow of buffering substance so that the following reactions take place:
CaO
+
H
2
⁢
O
+
2
⁢
CO
2
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
⁢
or
⁢
Ca
(
OH
)
2
⁢
(
aq
)
+
2
⁢
CO
2
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
;
releasing at least a first flow of buffered ionic mixture at the outlet of the pH correction apparatus;
and
placing the first flow of buffered ionic mixture into the sea.

109 more elements

Dependencies are inferred from the claim text.

Facts

Application: 18/779,205Filed 22 Jul 2024 · continuation in part
Priority: IT 10202000003156222 Dec 2020
Published: US 2024/0375076 A114 Nov 2024
Granted: 1 Sep 2026
Term ends: Not estimatedThe source records don’t support an estimate.

Classification4 codes

B01J 19/0086
Chemical, physical or physico-chemical processes in general; Their relevant apparatus: processes carried out with a view to control or to change…
B01J 19/0013
Controlling or regulating processes: controlling the temperature of the process
B01J 19/004
Controlling or regulating processes: multifunctional apparatus for automatic manufacturing of various chemical products
B01J
Chemical or physical processes

Family

Application18/258,956Parent of this continuation-in-part · filed 16 Dec 2021
PCT/IB2021/061832Parent of this continuation-in-part · filed 16 Dec 2021
US 2024/0375076 A1Pre-grant publication · published 14 Nov 2024
US 12,070,720 B2Parent of this continuation-in-part
US 2023/0390699 A1Published application
US 12,722,135 B2This patent

From the US filing history. Foreign family members aren’t listed.

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Abstract

A plant for producing decarbonized oxide or hydroxide, comprising:

a calciner,
a contactor,
a pH correction apparatus, and
a dosing device, wherein:
the plant is configured for deriving power from one or more of:
electric power, biomass-derived fuels, waste-derived fuels, green hydrogen, and e-fuels;
the calciner is configured to at least receive, at an inlet, a first flow of carbonate and a supply of power, and to at least release, at an outlet, a first calciner outlet flow comprising carbonic gas at a temperature greater than 600 degrees Celsius and a second calciner outlet flow comprising a first flow of oxide;
the plant is configured for obtaining a first flow of buffering substance from the first flow of oxide either by diverting oxide from the first flow of oxide or by reacting water with oxide from the first flow of oxide;
the contactor is adapted to at least receive, at the inlet, carbonic gas from the first calciner outlet flow, a second flow of carbonate, and a flow of water;
the contactor is further adapted to make the carbonate from the second flow of carbonate react with water and the CO2 present in the carbonic gas according to the following reactions:
CO
2
⁢
(
aq
)
+
H
2
⁢
O
(
l
)
⇌
H
2
⁢
CO
3
⁢
(
aq
)
⇌
H
(
aq
)
+
+
HCO
3
⁢
(
aq
)
-
⁢
and
⁢
CaCO
3
+
CO
2
+
H
2
⁢
O
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
wherein Ca can be substituted with Mg when present in the carbonate, and to release, at a first outlet, at least a first flow of ionic mixture;
the contactor is configured for releasing non-soluble gases at a second outlet;
the dosing device is configured to at least receive, at the inlet, the first flow of buffering substance deriving from the calciner or a buffering substance produced from the first flow of buffering substance, and to at least release, at the outlet, a second flow of buffering substance and a third flow of buffering substance available for use;
and
the pH correction apparatus is configured to at least receive, at the inlet, the second flow of buffering substance or a buffering substance produced from the second flow of buffering substance, and the first flow of ionic mixture, wherein said pH correction apparatus is adapted to make the ionic mixture from the first flow of ionic mixture react with the oxide or the hydroxide from the second flow of buffering substance or the buffering substance produced from the second flow of buffering substance according to the following reactions:
CaO
+
H
2
⁢
O
+
2
⁢
CO
2
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
,
or
⁢
Ca
(
OH
)
2
⁢
(
aq
)
+
2
⁢
CO
2
→
Ca
(
HCO
3
)
2
⁢
(
aq
)
,
and wherein said pH correction apparatus is configured to at least release, at the outlet, a first flow of buffered ionic mixture.

126 more elements

Facts

Application

18/779,205Filed 22 Jul 2024 · continuation in part

Priority

IT 10202000003156222 Dec 2020

Published

US 2024/0375076 A114 Nov 2024

Granted

1 Sep 2026

Term ends

Not estimatedThe source records don’t support an estimate.

Classification4 codes

B01J 19/0086
Chemical, physical or physico-chemical processes in general; Their relevant apparatus: processes carried out with a view to control or to change…
B01J 19/0013
Controlling or regulating processes: controlling the temperature of the process
B01J 19/004
Controlling or regulating processes: multifunctional apparatus for automatic manufacturing of various chemical products
B01J
Chemical or physical processes

Family

Application18/258,956Parent of this continuation-in-part · filed 16 Dec 2021

PCT/IB2021/061832Parent of this continuation-in-part · filed 16 Dec 2021

US 2024/0375076 A1Pre-grant publication · published 14 Nov 2024

US 12,070,720 B2Parent of this continuation-in-part

US 2023/0390699 A1Published application

US 12,722,135 B2This patent

From the US filing history. Foreign family members aren’t listed.