Treatment of waste water in non-evaporating dehydration of low grade coal

Patent · Tue Jul 26 00:00:00 EDT 1983

OSTI ID:5617967

Nakabayashi, Y; Kamei, T; Komai, K; Kurihara, M; Matsuura, Y; Nakamura, A; Shimotamari, A; Wakabayashi, T

In a non-evaporating dehydration of brown coal, the coal is crushed and classified into lumps and fine particles. The lumps of coal are subjected to a non-evaporating dehydration in which waste water is produced. The waste water is contacted with the fine particles of coal so that components which affect the COD value of the water are absorbed by the coal particles. The coal particles are then burnt to produce saturated steam which is used in the non-evaporating dehydration.

• Assignee: Electric Power Development Co. LTD (Japan); Kawasaki Jukogyo K K (Japan)
• Patent Number(s): US 4395334
• OSTI ID: 5617967
• Resource Relation: Patent Priority Date: Priority date 31 Mar 1981, Japan; Other Information: PAT-APPL-362605
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
BROWN COAL
DEHYDRATION
WASTE WATER
WASTE PROCESSING
COMBUSTION
COMMINUTION
RECYCLING
STEAM
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGEN COMPOUNDS
LIQUID WASTES
MANAGEMENT
MATERIALS
OXIDATION
OXYGEN COMPOUNDS
PROCESSING
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTES
WATER
010800* - Coal
Lignite
& Peat- Waste Management
013000 - Coal
Lignite
& Peat- Transport
Handling
& Storage