Patent · US Active

Carbon ion pump for removal of carbon dioxide from combustion gas and other gas mixtures

US7828883B2 · kind B2 · utility

9Cited by

12References

5Claims

0Family size

Assignee

Lawrence Livermore National Security, LLC · US

Inventors

Roger D. Aines · Livermore, US
William L. Bourcier · Livermore, US

Key dates

Filing date	Jan 23, 2007
Grant date	Nov 9, 2010
Priority date	—
Expiry date	Aug 3, 2029

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02C20/40
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A novel method and system of separating carbon dioxide from flue gas is introduced. Instead of relying on large temperature or pressure changes to remove carbon dioxide from a solvent used to absorb it from flue gas, the ion pump method, as disclosed herein, dramatically increases the concentration of dissolved carbonate ion in solution. This increases the overlying vapor pressure of carbon dioxide gas, permitting carbon dioxide to be removed from the downstream side of the ion pump as a pure gas. The ion pumping may be obtained from reverse osmosis, electrodialysis, thermal desalination methods, or an ion pump system having an oscillating flow in synchronization with an induced electric field.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.