Process for brine disposal

Details Process for brine disposal Process for brine disposal

1993-09-17

1997-12-09

Fortuna, Ana

Liquid purification or separation

Processes

Liquid/liquid solvent or colloidal extraction or diffusing...

210651, 210180, 210181, 210770, 210684, 203 11, 166267, B01D 6100

Patent

active

056956436

ABSTRACT:
A method of treating and disposing of waste water containing salt, such as the brine that results from production of oil and/or gas wells, which includes introducing the waste water into a reverse osmosis unit to produce concentrated brine, and passing the concentrated brine through a combustion heat evaporator wherein said combustion heat is generated in a submerged combustion evaporator or exhaust gases from an internal combustion engine to power a waste heat evaporator to produce a further concentrated brine. The concentrated brine from the combustion heat evaporator can then be mixed with a liquid such as the waste water that is introduced into the reverse osmosis unit. The resulting product can then be injected into a subterranean formation for purposes of disposal. The method allows the volume of the waste water to be significantly reduced while also increasing the salt concentration of the waste water. In other embodiments the reverse osmosis unit and the combustion heat evaporator are used individually. Alternatively, the concentrated brine from the combustion heat evaporator can be introduced into a dryer to evaporate water from the concentrated brine to produce low moisture salt particles.

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"Process for Coalbed Brine Disposal", Aquatech Services, Incorporated, Article in Sep. 1992 Issue of The American Oil and Gas Reporter.
"Submerged Combustion Brine Evaporation Process for Coalbed Gas Production" DOE Project Summary, Submitted May 1992.

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