Process for converting carbon dioxide from coal utilization to a solid ash
US8119098B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 2010 |
| Grant date | Feb 21, 2012 |
| Priority date | — |
| Expiry date | Mar 28, 2030 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P70/50
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A process for conversion of coal in a reaction vessel comprises steps of: admixing coal and powdered alumina clay to form reactants; injecting the reactants with a high-pressure steam jet into the reaction vessel; and producing aluminum oxalate ash and hydrogen. Preferably, the reaction vessel is pressurized to maximize the production of aluminum oxalate and hydrogen. Optionally, the process includes adding calcium carbonate if not present in the clay. The reactants in the reaction vessel are typically maintained a temperature of about 2,000 degrees Kelvin and a pressure of about 1 mega Pascals. To save energy, the process may include preheating water with the aluminum oxalate ash to aid in creating pressurized steam. The hydrogen may be mixed with air and burned in a combustion chamber, such as is found within a gas turbine-generator unit to produce electricity. Optionally the reactants may include an aqueous sodium hydroxide.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.