Treatment of oil field wastes

Patent · Tue Jun 21 00:00:00 EDT 1988

OSTI ID:6901807

Terry, E G; Seedall, L K

An apparatus for recovery of barite and clays from spend drilling fluids is described comprising: (a) a rotary kiln having a first end higher than a second end whereby drilling fluids therein will flow from the first end to the second end, the kiln having an inlet at the first end for receiving drilling fluids and combustion air; (b) a burner connected to the first end of the kiln for supplying fire to the kiln for aiding in burning the combustible components of the drilling fluids in the kiln; (c) a fuel and pressurized air inlet connected to the burner; (d) an outlet at the second end of the kiln for removing the light weight waste; (e) means connected to the outlet for removing high weight dried waste from the kiln by gravity; (f) cyclone separator means located downstream of the kiln outlet for separation of particulates such as barite and clays; (g) secondary combustion means located downstream from the cyclone separator means for oxidation of residual pyrolized gases from oxidized carbonaceous waste from the kiln; (h) heat exchanger means for cooling the exhaust gases to substantially a 100% water saturation point with incoming combustion air to preheat the combustion air; and (i) means for removing residual oxides of sulfur from the exhaust gases prior to vending to the atmosphere.

• Assignee: Environmental Pyrogenics Services, Inc., Houston, TX
• Patent Number(s): US 4751887
• OSTI ID: 6901807
• Resource Relation: Patent File Date: Filed date 15 Sep 1987
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
54 ENVIRONMENTAL SCIENCES
DRILLING FLUIDS
COMBUSTION
EXHAUST GASES
DESULFURIZATION
KILNS
EMISSION
MINERAL WASTES
OIL WELLS
CUTTINGS REMOVAL
WASTE PROCESSING PLANTS
AIR POLLUTION CONTROL
BARITE
CLAYS
COOLING
CYCLONE SEPARATORS
HEAT EXCHANGERS
PARTICULATES
POLLUTION CONTROL EQUIPMENT
REMOVAL
SULFUR DIOXIDE
VOLATILE MATTER
WASTE PROCESSING
ALKALINE EARTH METAL COMPOUNDS
BARIUM COMPOUNDS
BARIUM SULFATES
CHALCOGENIDES
CHEMICAL REACTIONS
CONCENTRATORS
CONTROL
EQUIPMENT
FLUIDS
GASEOUS WASTES
GASES
INDUSTRIAL PLANTS
INERTIAL SEPARATORS
MANAGEMENT
MATTER
MINERALS
OXIDATION
OXIDES
OXYGEN COMPOUNDS
PARTICLES
POLLUTION CONTROL
PROCESSING
SEPARATION EQUIPMENT
SOLID WASTES
SULFATE MINERALS
SULFATES
SULFUR COMPOUNDS
SULFUR OXIDES
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTES
WELLS
020800* - Petroleum- Waste Management
020900 - Petroleum- Environmental Aspects
500200 - Environment
Atmospheric- Chemicals Monitoring & Transport- (-1989)