Process for removing ash from coal
US4482351A · kind A · utility
16Cited by
5References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 27, 1982 |
| Grant date | Nov 13, 1984 |
| Priority date | — |
| Expiry date | Dec 27, 2002 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB03B9/005
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A process for removing ash from coal comprising the steps of transferring pulverized coal to be treated by entraining it on a stream A of anti-oxidation gas, feeding the coal laden gas into dry-type electric precipitating chamber means 2 after suitably adjusting the temperature and humidity of the gas during transport, and separating particulate ash from the coal particles by capturing the former in the chamber means 2 by virtue of difference in specific resistance between the two kinds of particles, whereby highly purified coal B is obtained as entrained on the gas stream at the outlet 3 of the chamber means 2.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.