Coal processing method by using characteristics of sub-critical and supercritical water
US9011671B2 · kind B2 · utility
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11Claims
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Key dates
| Filing date | Dec 17, 2009 |
| Grant date | Apr 21, 2015 |
| Priority date | — |
| Expiry date | Aug 4, 2032 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
A coal processing method includes adding coal powder, water and catalyst into a series of tandem reactors and processing therein, wherein the coal powder, water and catalyst are added into the first reactor of the series of tandem reactors; and the temperature and pressure of the series reactors is alternatively arranged in sub-critical state and supercritical state of water from the first reactor, the total product from the previous reactor is used as the feed of the next reactor without any further separation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.