[특허]Process for brine disposal

Process for brine disposal 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	B01D-061/00
출원번호	US-0129692 (1993-09-17)
발명자 / 주소	Brandt Harry (El Macero CA) Tait John H. (Carmichael CA)
출원인 / 주소	Aquatech Services, Inc. (Fair Oaks CA 02)
인용정보	피인용 횟수 : 56 인용 특허 : 0

초록 ▼

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.

대표청구항 ▼

A method for treating and disposing of brine resulting from the production of oil and/or gas, comprising: recovering brine during production of oil and/or gas, the recovered brine having a salt concentration greater than 500 parts per million (ppm) so that said recovered brine is unsuitable for surface disposal; passing said recovered brine through a reverse osmosis unit to yield a first liquid stream having a salt concentration that is not in excess of 500 ppm and a second liquid stream having a salt concentration is greater than the salt concentration of the recovered brine; passing said second liquid stream through a combustion heat evaporator to yield a heated third liquid stream and water vapor, said third liquid stream having a salt concentration that is greater than the salt concentration of said second liquid stream and said water vapor resulting by evaporation of water from said second liquid stream in said evaporator being vented to atmosphere or condensed; mixing said heated third liquid stream with a liquid to yield a heated fourth liquid stream having a salt concentration (1) greater than said recovered brine and (2) less than saturation at temperature and pressure conditions existing in an underground reservoir formation for disposal of said heated fourth liquid stream; and injecting said heated fourth liquid stream into said underground reservoir formation while maintaining the salt concentration of said fourth liquid stream at less than saturation at said temperature and pressure of said underground reservoir formation to prevent plugging of said underground reservoir formation during and after injection of the fourth liquid stream into said underground reservoir formation.

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

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Process for brine disposal 원문보기

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