EP3897919A1 - Flare system using produced water and ozone injection - Google Patents
Flare system using produced water and ozone injectionInfo
- Publication number
- EP3897919A1 EP3897919A1 EP19904140.1A EP19904140A EP3897919A1 EP 3897919 A1 EP3897919 A1 EP 3897919A1 EP 19904140 A EP19904140 A EP 19904140A EP 3897919 A1 EP3897919 A1 EP 3897919A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- produced water
- scrubber
- scrubber unit
- flare
- unit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/06—Spray cleaning
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D47/00—Separating dispersed particles from gases, air or vapours by liquid as separating agent
- B01D47/14—Packed scrubbers
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/72—Treatment of water, waste water, or sewage by oxidation
- C02F1/78—Treatment of water, waste water, or sewage by oxidation with ozone
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2303/00—Specific treatment goals
- C02F2303/22—Eliminating or preventing deposits, scale removal, scale prevention
Definitions
- This invention relates to a system and apparatus for flaring gas from oilfield operations using produced water.
- the present invention comprises a system and apparatus for flaring gas from oilfield operations using produced water.
- the system provides an alternative treatment and disposal technique for produced water, thereby avoiding problems associated with injecting produced water back into subsurface strata, such as induced seismicity.
- the system is configured to be installed at or near the wellhead, thereby avoiding the problems of prior art centralized systems for handling produced water, which are substantially larger and built at a central location to store and gather large quantities of produced water. Centralized systems require the produced water to travel much greater distances and become cooler before treatment, thereby requiring more energy for heating or treatment.
- the present invention uses produced water that is at a temperature of greater than 100 degrees F, thereby reducing the amount of energy required for heating.
- produced water is treated in a scrubber.
- Heat is applied through a flare gas field burner, which uses field gas from the oilfield operations (and thus provides a useful alternative to simply open flaring the field gas as a means of preventing the accumulation of field gas for safety reasons as well as preventing the venting of methane, a greenhouse gas, into the atmosphere).
- a wet scrubber unit with scrubber packing is used to clean emissions (e.g., nitrous oxides, sulfur oxides, acid gases, particulate matter, and the like).
- a produced water pump is used to circulate produced water, and pump produced water through spray nozzles in the scrubber unit for use as the wet scrubbing agent. The present invention thus optimizes contact and mixing between the hot air and water.
- the above process also results in gradual evaporation of the produced water, which results in the accumulation of salts and other solids from the produced water.
- Evaporated salts and solids are continuously removed from the evaporator/scrubber unit by appropriate means, such as an auger system.
- the evaporated salts and solids are then treated via chemical stabilization in a mixing system with chemical reagents to prevent the residual form from being hazardous.
- the residual material is then stored and disposed of properly.
- the present invention thus provides a more environmentally-friendly and efficient means of addressing several pollution and related concerns.
- the system eliminates open flaring by using the field gas in a field gas flare burner to heat produced water, and scrubbing the emissions using the heated produced water in a scrubbing unit.
- the system eliminates or reduces the volume of produced water.
- the system operates at or near the wellhead, thereby allowing use of the field gas while treating the produced water with less energy required.
- FIG. 1 shows a view of a system in accordance with an embodiment of the present invention.
- the present invention comprises a system and apparatus for flaring gas from oilfield operations using produced water.
- the system provides an alternative treatment and disposal technique for produced water, thereby avoiding problems associated with injecting produced water back into subsurface strata, such as induced seismicity.
- the improved system of the present invention also is configured to be installed at or near (i.e., close proximity to) the wellhead, thereby avoiding the problems of prior art centralized systems for handling produced water, which are substantially larger and built at a central location to store and gather large quantities of produced water. Centralized systems, however, require the produced water to travel much greater distances and become cooler before treatment, thereby requiring more energy for heating or treatment.
- the present invention uses produced water that is at a temperature of greater than 100 degrees F, thereby reducing the amount of energy required for heating.
- FIG. 1 shows an exemplary embodiment of an improved system in accordance with the present invention.
- Produced water is treated in the scrubber 10 Heat is applied through a flare gas field burner 12, which uses field gas from the oilfield operations (and thus provides a useful alternative to simply open flaring the field gas as a means of preventing the accumulation of field gas for safety reasons as well as preventing the venting of methane, a greenhouse gas, into the atmosphere).
- a wet scrubber unit with scrubber packing 14 is used to clean emissions (e.g., nitrous oxides, sulfur oxides, acid gases, particulate matter, and the like).
- a produced water pump 16 is used to circulate produced water, and pump produced water through spray nozzles 18 in the scrubber unit for use as the wet scrubbing agent.
- the present invention thus optimizes contact and mixing between the hot air and water.
- ozone is used in the wet scrubber 10 to reduce NOx by approximately 90% or more.
- the ozone oxidizes insoluble NOx to a water soluble species form for removal by the scrubber with little or no S02 or CO oxidation.
- the oxidation of NOx takes place at or below 300 degrees F (i.e., low temperature oxidation).
- Ozone may be generated on-site and injected to the evaporator/scrubber unit.
- the ozone is added to the effluent gas of the thermal oxidizer prior to entering the evaporation chamber. As a result, NOx emissions are reduced.
- Evaporated salts and solids are continuously removed from the evaporator/scrubber unit by appropriate means, such as an auger system 20.
- the evaporated salts and solids are then treated via chemical stabilization in a mixing system (e.g., treatment mixer) 30 with chemical reagents (which are stored in a reagent silo 32) to chemically stabilize the residual and prevent the residual from being hazardous.
- the residual material is then stored and disposed of properly.
- the present invention thus provides a more environmentally-friendly and efficient means of addressing several pollution and related concerns.
- the system eliminates open flaring by using the field gas in a field gas flare burner to heat produced water, and scrubbing the emissions using the heated produced water in a scrubbing unit.
- the system eliminates or reduces the volume of produced water.
- the system operates at or near the wellhead, thereby allowing use of the field gas while treating the produced water with less energy required.
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Treating Waste Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201862784525P | 2018-12-23 | 2018-12-23 | |
PCT/US2019/068301 WO2020139821A1 (en) | 2018-12-23 | 2019-12-23 | Flare system using produced water and ozone injection |
Publications (2)
Publication Number | Publication Date |
---|---|
EP3897919A1 true EP3897919A1 (en) | 2021-10-27 |
EP3897919A4 EP3897919A4 (en) | 2022-10-19 |
Family
ID=71126250
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP19904140.1A Pending EP3897919A4 (en) | 2018-12-23 | 2019-12-23 | Flare system using produced water and ozone injection |
Country Status (2)
Country | Link |
---|---|
EP (1) | EP3897919A4 (en) |
WO (1) | WO2020139821A1 (en) |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4351729A (en) * | 1980-02-06 | 1982-09-28 | Celanese Corporation | Biological filter and process |
US4746290A (en) * | 1986-05-29 | 1988-05-24 | International Technolgy Corporation | Method and apparatus for treating waste containing organic contaminants |
US5484279A (en) * | 1993-03-22 | 1996-01-16 | Emcon, Inc. | Method and apparatus for disposal of landfill gas condensate |
US7105039B2 (en) * | 2003-02-26 | 2006-09-12 | Scott Decker | Ozone remediation apparatus and methods |
JP2005349299A (en) * | 2004-06-10 | 2005-12-22 | Mitsubishi Heavy Ind Ltd | Freshwater production apparatus |
EP2659947A1 (en) * | 2012-04-30 | 2013-11-06 | Linde Aktiengesellschaft | Method and apparatus for removing contaminants from exhaust gases |
US9199861B2 (en) * | 2013-02-07 | 2015-12-01 | Heartland Technology Partners Llc | Wastewater processing systems for power plants and other industrial sources |
RS57208B1 (en) * | 2013-04-09 | 2018-07-31 | Wintershall Holding GmbH | Purification of storage facility water |
US20150050603A1 (en) * | 2013-08-14 | 2015-02-19 | Danny Edward Griffin | Dual-Pressure Flare System and Method of Use |
CN107073392B (en) * | 2014-10-06 | 2020-08-25 | 北京康肯环保设备有限公司 | Exhaust gas treatment device |
US10443356B1 (en) * | 2016-09-21 | 2019-10-15 | Hydrozonix, Llc | Flare system using produced water |
-
2019
- 2019-12-23 WO PCT/US2019/068301 patent/WO2020139821A1/en unknown
- 2019-12-23 EP EP19904140.1A patent/EP3897919A4/en active Pending
Also Published As
Publication number | Publication date |
---|---|
WO2020139821A1 (en) | 2020-07-02 |
EP3897919A4 (en) | 2022-10-19 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE INTERNATIONAL PUBLICATION HAS BEEN MADE |
|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE |
|
17P | Request for examination filed |
Effective date: 20210723 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
DAV | Request for validation of the european patent (deleted) | ||
DAX | Request for extension of the european patent (deleted) | ||
A4 | Supplementary search report drawn up and despatched |
Effective date: 20220916 |
|
RIC1 | Information provided on ipc code assigned before grant |
Ipc: E21B 43/34 20060101ALI20220912BHEP Ipc: E21B 41/00 20060101ALI20220912BHEP Ipc: C10L 3/10 20060101ALI20220912BHEP Ipc: C02F 1/12 20060101ALI20220912BHEP Ipc: B01D 47/14 20060101ALI20220912BHEP Ipc: B01D 47/06 20060101AFI20220912BHEP |