Process for removing ash from coal

Patent · Tue Nov 13 00:00:00 EST 1984

OSTI ID:6084663

Kilazawa, K; Ozaki, T

A process for removing ash from coal comprising the steps of transferring pulverized coal to be treated b 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 kind of particles, whereby highly purified coal B is obtained as entrained on the gas stream at the outlet 3 of the chamber means 2.

• Assignee: Hitachi Shipbuilding and Engineering Co. Ltd. (Japan)
• Patent Number(s): US 4482351
• OSTI ID: 6084663
• Resource Relation: Patent Priority Date: Priority date 14 Apr 1982, Japan; Other Information: PAT-APPL-459691
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
COAL
DEASHING
COAL PREPARATION
ELECTRIC CONDUCTIVITY
ELECTRIC FIELDS
GAS FLOW
PARTICLE SIZE
PRECIPITATION
SEPARATION EQUIPMENT
CARBONACEOUS MATERIALS
ELECTRICAL PROPERTIES
ENERGY SOURCES
FLUID FLOW
FOSSIL FUELS
FUELS
MATERIALS
PHYSICAL PROPERTIES
SEPARATION PROCESSES
SIZE
013000* - Coal
Lignite
& Peat- Transport
Handling
& Storage