Chemical reaction devices involving acid and/or base, and related systems and methods

Patent metadata

Field	Value
Publication number	US-2022145477-A1
Application number	US-202017438888-A
Country	US
Kind code	A1
Filing date	Mar 13, 2020
Priority date	Mar 14, 2019
Publication date	May 12, 2022
Grant date	—

Abstract

Chemical reaction devices involving acid and/or base, and related systems and methods, are generally described.

First claim

1 . A method, comprising:
running a reactor in a first mode; wherein the first mode comprises: producing base from a first electrode; producing acid from a second electrode that is electrochemically coupled to the first electrode in the reactor; and collecting the acid and/or base.

2 . The method of claim 1 , further comprising reacting the collected acid and/or base in a chemical dissolution and/or in a precipitation reaction.

3 . A method, comprising:
running a reactor in a first mode; wherein the first mode comprises: producing base from a first electrode; producing acid from a second electrode that is electrochemically coupled to the first electrode in the reactor; collecting the acid and/or base; and reacting the collected acid and/or base in a chemical dissolution and/or in a precipitation reaction.

4 . The method of claim 1 , wherein the first mode comprises producing oxygen gas from the second electrode.

5 . The method of claim 1 , wherein the first mode comprises producing hydrogen gas from the first electrode.

6 . A method, comprising:
running a reactor in a first mode; wherein the first mode comprises: producing base and hydrogen gas from a first electrode; producing acid and oxygen gas from a second electrode that is electrochemically coupled to the first electrode in the reactor; and allowing the oxygen gas to diffuse and/or be transported to the first electrode and/or allowing the hydrogen gas to diffuse and/or be transported to the second electrode; and allowing the oxygen gas to be reduced by the first electrode and/or allowing the hydrogen gas to be oxidized by the second electrode.

7 . The method of claim 6 , further comprising collecting the acid and/or base.

8 . The method of claim 6 , further comprising reacting the collected acid and/or base in a chemical dissolution and/or in a precipitation reaction.

9 . The method of claim 6 , wherein the producing acid from the second electrode and producing oxygen gas from the second electrode comprises oxidizing water by the second electrode to produce oxygen gas and acid.

10 . The method of claim 6 , wherein the producing base from the first electrode and producing hydrogen gas from the first electrode comprises reducing water by the first electrode to produce hydrogen gas and base.

11 . The method of claim 1 , comprising collecting the acid.

12 . The method of claim 1 , comprising collecting the base.

13 . The method of claim 11 , comprising reacting the collected acid in a chemical dissolution.

14 . The method of claim 12 , comprising reacting the collected base in a precipitation reaction.

15 . The method of claim 1 , further comprising storing the acid and/or base.

16 . The method of claim 1 , comprising storing the acid.

17 . The method of claim 15 , comprising storing the base.

18 . The method of claim 1 , further comprising running the reactor in a second mode, wherein a polarity of the reactor is reversed in the second mode compared to a polarity of the reactor in the first mode.

19 . The method of claim 18 , wherein a cost of electricity for running the reactor in the first mode is a first cost and an availability of electricity for running the reactor in the first mode is a first availability, wherein a cost of electricity for running the reactor in the second mode is a second cost and an availability of electricity for running the reactor in the second mode is a second availability, and wherein the second cost is greater than the first cost and/or the first availability is greater than the second availability.

20 . The method of claim 18 , wherein the method further comprises collecting and storing the base, and the second mode comprises adding the stored base to the reactor near the second electrode.

21 - 149 . (canceled)

Assignees

• Massachusetts Inst Technology

Inventors

• Chiang Yet-Ming
• Ellis Leah
• Badel Andres
• Metcalf Isaac W

Classifications

• C04B7/06 Primary

  using alkaline raw materials (C04B7/60 takes precedence) · CPC title

• Y02P40/18

  Carbon capture and storage [CCS] · CPC title

• C01B13/36 Primary

  by precipitation reactions in {aqueous} solutions {(C01B13/328 takes precedence)} · CPC title

• C25B1/22 Primary

  Inorganic acids · CPC title

• Y02E60/36

  Hydrogen production from non-carbon containing sources, e.g. by water electrolysis · CPC title