CN112479407A - Device and method for efficiently separating oil in extracted water phase by extracting organic waste gas - Google Patents
Device and method for efficiently separating oil in extracted water phase by extracting organic waste gas Download PDFInfo
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- CN112479407A CN112479407A CN202011411332.0A CN202011411332A CN112479407A CN 112479407 A CN112479407 A CN 112479407A CN 202011411332 A CN202011411332 A CN 202011411332A CN 112479407 A CN112479407 A CN 112479407A
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- oil
- mixing chamber
- organic
- water phase
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 46
- 239000007789 gas Substances 0.000 title claims abstract description 17
- 239000010815 organic waste Substances 0.000 title claims abstract description 13
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 43
- 239000012071 phase Substances 0.000 claims abstract description 41
- 239000012074 organic phase Substances 0.000 claims abstract description 21
- 238000000605 extraction Methods 0.000 claims abstract description 19
- 238000005188 flotation Methods 0.000 claims abstract description 19
- 235000019198 oils Nutrition 0.000 claims description 71
- 239000008346 aqueous phase Substances 0.000 claims description 7
- 239000000835 fiber Substances 0.000 claims description 6
- 238000001914 filtration Methods 0.000 claims description 3
- 235000019476 oil-water mixture Nutrition 0.000 claims description 3
- 238000005352 clarification Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 5
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 239000002904 solvent Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010977 unit operation Methods 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000009854 hydrometallurgy Methods 0.000 description 1
- 230000002209 hydrophobic effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 229910052761 rare earth metal Inorganic materials 0.000 description 1
- 150000002910 rare earth metals Chemical class 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F9/00—Multistage treatment of water, waste water or sewage
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D11/04—Solvent extraction of solutions which are liquid
- B01D11/0446—Juxtaposition of mixers-settlers
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
- C22B3/02—Apparatus therefor
-
- 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
- C02F1/001—Processes for the treatment of water whereby the filtration technique is of importance
-
- 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
- C02F1/24—Treatment of water, waste water, or sewage by flotation
-
- 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
- C02F1/40—Devices for separating or removing fatty or oily substances or similar floating material
-
- 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
- C02F2001/007—Processes including a sedimentation step
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
Abstract
The invention discloses a device and a method for efficiently separating and extracting oil in water phase by using extracted organic waste gas, and the device comprises an extraction tank, a negative pressure circulating system and an organic bubble generator, wherein the extraction tank is provided with an initial mixing chamber, a first clarifying chamber, an air flotation mixing chamber and a second clarifying chamber which are sequentially arranged; the first clarifying chamber, the air flotation mixing chamber and the second clarifying chamber are communicated with each other. The invention effectively solves the problem of volatilization loss of an organic phase, improves the working environment, improves the oil removing effect and reduces the oil content in the water phase to be less than 5 ppm.
Description
Technical Field
The invention belongs to the field of wet metallurgy, and relates to a device and a method for efficiently separating and extracting oil in an aqueous phase by extracting organic waste gas.
Background
In the field of hydrometallurgy, extraction operation is used as an important chemical unit, and extraction refers to a unit operation of transferring a compound from one solvent to another solvent by utilizing the difference of solubility or distribution coefficient of the compound in two mutually insoluble solvents, and extracting most of chemicals through repeated extraction, and the unit operation is widely applied to separation, extraction or purification processes of rare earth, noble metal, nonferrous metal and the like. Because the extraction raw material liquid has a certain temperature, part of the extraction reaction is exothermic reaction, especially some extraction reactions need heating high temperature extraction, the high temperature leads to the volatilization of an organic phase, which causes the loss of an extracting agent and a diluting agent, and the volatilization and overflow of the organic phase lead to the deterioration of the field operation environment, which is not beneficial to the occupational health of operators.
In the process of layering the organic phase and the water phase, the organic phase mainly exists in the forms of floating oil, dispersed oil, emulsified oil and dissolved oil. Floating oil: the oil has larger dispersed particles in water, the particle diameter of the oil is generally more than 100 mu m, and the oil can quickly float up after standing and float on the water surface by an oil film of a continuous phase. Dispersing oil: the oil has a dispersed particle size of 10-100 μm in water, is suspended in water as tiny oil droplets, is unstable, and tends to form floating oil after standing for a certain time. Emulsified oil: the particle size of the oil droplets is less than 10 μm, generally 0.1-2 μm. Dissolving oil: the oil is present in the aqueous phase in a molecular or chemical state to form a stable homogeneous system, typically with particle sizes of less than a few microns.
Wherein, the separation of dispersed oil, emulsified oil and dissolved oil is difficult, and the oil is easy to be introduced into the water phase, and the oil content in the water phase is generally as high as 50-100ppm, which affects the product quality.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a device and a method for efficiently separating and extracting oil in an aqueous phase by extracting organic waste gas.
The invention is realized by the following technical scheme.
The invention claims a device for efficiently separating and extracting oil in water phase by using extracted organic waste gas, which comprises an extraction tank, a negative pressure circulating system and an organic bubble generator, wherein the extraction tank is provided with an initial mixing chamber, a first clarifying chamber, an air flotation mixing chamber and a second clarifying chamber which are sequentially arranged; the initial mixing chamber, the first clarifying chamber, the air flotation mixing chamber and the second clarifying chamber are communicated with each other.
In the invention, the upper part of the initial mixing chamber side is provided with a water phase inlet, and the lower part of the initial mixing chamber side is provided with an organic phase inlet.
In the invention, the side of the second clarifying chamber is provided with an organic phase outlet above and an aqueous phase outlet below.
In the invention, the discharge end in the second clarifying chamber is provided with lipophilic filter fibers.
In the invention, a stirrer is arranged in the initial mixing chamber.
In the invention, the top of the organic bubble generator is provided with a supplementary compressed air port.
The invention also claims a method for separating and extracting oil in water phase, which comprises the steps of mixing the organic phase and the water phase uniformly in a mixing chamber, overflowing the uniformly mixed oil-water mixture into a first clarifying chamber, separating floating oil, allowing the water phase passing through the first clarifying chamber to enter an air flotation mixing chamber, allowing micro bubbles generated by an organic bubble generator to enter the bottom of the air flotation mixing chamber, accumulating dispersed oil, floating oil and dissolved oil in the water phase into floating oil to be removed, allowing the water phase subjected to oil removal by air flotation to enter a second clarifying chamber, naturally clarifying, finely filtering the oil by lipophilic fibers, and discharging the oil from a water phase outlet below the side of the second clarifying chamber. The oil gas removed in the first clarifying chamber and the air flotation mixing chamber is recycled to the organic bubble generator through a pipeline.
The invention has the beneficial technical effects that:
the invention utilizes the organic phase volatile gas in the extraction tank to be extracted and collected by a negative pressure fan, a bubble generator forms micro bubbles with organic phase components, the micro bubbles are then introduced into the water phase, the micro bubbles are composed of nonpolar molecules and can be combined with hydrophobic oil to lift with oil drops, the floating speed can be improved by about thousand times, and the oil-water separation efficiency is greatly improved. Oil drops are accumulated to form floating oil, and a floating oil layer recovers an organic phase volatilized in the extraction process and an organic phase carried in a water phase through an organic phase collecting tank, so that the volatilization loss of the organic phase is effectively solved, the operation environment is improved, the oil removing effect is improved, and the oil content in the water phase is reduced to be within 1 ppm.
Drawings
FIG. 1 is a schematic structural diagram of the apparatus of the present invention.
Detailed Description
The present invention will be described in detail with reference to the following embodiments.
As shown in fig. 1, the invention claims a device for efficiently separating oil in an extraction water phase by using extracted organic waste gas, which comprises an extraction tank, a negative pressure circulation system and an organic bubble generator, wherein the extraction tank is provided with an initial mixing chamber, a first clarifying chamber, an air flotation mixing chamber and a second clarifying chamber which are sequentially arranged, the top of the organic bubble generator is provided with a pipeline communicated with the air flotation mixing chamber, the tops of the initial mixing chamber and the air flotation mixing chamber are provided with a pipeline connected with a negative pressure fan, and the other end of the negative pressure fan is communicated with the organic bubble generator through a pipeline; the upper parts of the initial mixing chamber, the first clarifying chamber, the air flotation mixing chamber and the second clarifying chamber are communicated; wherein, the upper part of the initial mixing chamber side is provided with a water phase inlet, and the lower part of the initial mixing chamber side is provided with an organic phase inlet; the upper part of the second clarifying chamber is provided with an organic phase outlet, and the lower part of the second clarifying chamber is provided with a water phase outlet; the discharge end in the second clarifying chamber is provided with lipophilic filter fibers; a stirrer is arranged in the initial mixing chamber; the top of the organic bubble generator is provided with a supplementary compressed air port.
The invention also claims a method for separating and extracting oil in water phase, mixing the organic phase and the water phase uniformly in a mixing chamber, overflowing the uniformly mixed oil-water mixture into a first clarifying chamber, separating out oil slick and removing 99% of the organic phase due to the layering of the oil phase and the water phase caused by different oil-water specific gravity, allowing the water phase separated in the first clarifying chamber to enter an air flotation mixing chamber, allowing micro bubbles generated by an organic bubble generator to enter the bottom of the air flotation mixing chamber, accumulating dispersed oil, oil slick and dissolved oil in the water phase into oil slick and removing due to lipophilicity of organic micro air, allowing the water phase subjected to oil slick removal to enter a second clarifying chamber, naturally clarifying and finely filtering the oil by oleophilic fibers to reduce the oil content in the water phase to less than 1ppm, and discharging the oil from a water phase outlet below the side of the second clarifying; wherein the oil gas removed from the first clarifying chamber and the air flotation mixing chamber is recycled to the organic bubble generator through a pipeline.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention. It should be noted that other equivalent modifications can be made by those skilled in the art in light of the teachings of the present invention, and all such modifications can be made as are within the scope of the present invention.
Claims (7)
1. The device for efficiently separating oil in an extracted water phase by using extracted organic waste gas is characterized by comprising an extraction tank (1), a negative pressure circulating system (2) and an organic bubble generator (3), wherein the extraction tank (1) is provided with an initial mixing chamber (4), a first clarifying chamber (5), an air floatation mixing chamber (6) and a second clarifying chamber (7) which are sequentially arranged, the top of the organic bubble generator (3) is provided with an organic microbubble air inlet and distribution pipe (8) communicated with the air floatation mixing chamber (6), the organic microbubble air inlet and distribution pipe (8) extends into the inner bottom of the air floatation mixing chamber (6), the tops of the initial mixing chamber (4) and the air floatation mixing chamber (6) are provided with an organic volatile gas collecting pipe (10) connected with a negative pressure fan (9), and the other end of the negative pressure fan is communicated with the organic bubble generator through a pipeline; the initial mixing chamber, the first clarifying chamber, the air flotation mixing chamber and the second clarifying chamber are communicated with each other.
2. The apparatus for separating and extracting oil in water phase with high efficiency by using extracted organic waste gas as claimed in claim 1, wherein the initial mixing chamber has an inlet for water phase on the upper side and an inlet for organic phase on the lower side.
3. The apparatus for separating and extracting oil in aqueous phase with high efficiency by using extracted organic waste gas according to claim 1, wherein the second clarifying chamber is provided with an organic phase outlet on the upper side and an aqueous phase outlet on the lower side.
4. The apparatus for separating and extracting oil in water phase with high efficiency by extracting organic waste gas according to claim 1, wherein the discharge end in the second clarifying chamber is provided with lipophilic filter fiber.
5. The device for separating and extracting oil in aqueous phase with high efficiency by extracting organic waste gas according to claim 1 is characterized in that a stirrer (11) is arranged in the initial mixing chamber.
6. The device for efficiently separating and extracting oil in water phase by using the extracted organic waste gas as claimed in claim 1, wherein the top of the organic bubble generator is provided with a supplementary compressed air port.
7. A method for separating and extracting oil in water phase by using the device of any one of claims 1 to 6, wherein the organic phase and the water phase are uniformly mixed in the mixing chamber, the uniformly mixed oil-water mixture enters the first clarifying chamber, floating oil is separated, the water phase passing through the first clarifying chamber enters the air flotation mixing chamber, micro bubbles generated by the organic bubble generator enter the bottom of the air flotation mixing chamber, dispersed oil, floating oil and dissolved oil in the water phase are accumulated into floating oil to be removed, the water phase after oil removal by air flotation enters the second clarifying chamber, oil is removed by natural clarification and fine filtration of lipophilic fibers, and the oil is discharged from a water phase outlet below the side of the second clarifying chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411332.0A CN112479407B (en) | 2020-12-03 | 2020-12-03 | Device and method for efficiently separating oil in extracted water phase by using extracted organic waste gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011411332.0A CN112479407B (en) | 2020-12-03 | 2020-12-03 | Device and method for efficiently separating oil in extracted water phase by using extracted organic waste gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112479407A true CN112479407A (en) | 2021-03-12 |
| CN112479407B CN112479407B (en) | 2024-03-15 |
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| CN202011411332.0A Active CN112479407B (en) | 2020-12-03 | 2020-12-03 | Device and method for efficiently separating oil in extracted water phase by using extracted organic waste gas |
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| Country | Link |
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Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5256299A (en) * | 1990-07-02 | 1993-10-26 | International Environmental Systems, Inc., Usa | Method and apparatus for liquid treatment |
| JP2010110681A (en) * | 2008-11-05 | 2010-05-20 | Tominaga Oil Pump Mfg Co Ltd | Apparatus for recovering volatile hydrocarbon |
| CN102515308A (en) * | 2011-12-23 | 2012-06-27 | 天津市茂联科技有限公司 | Self-inflating micro-bubble oil remover and oil removing method |
| CN205532562U (en) * | 2016-02-19 | 2016-08-31 | 中石化节能环保工程科技有限公司 | Oilfield produced liquid divides and water treatment facilities on spot |
| CN106000033A (en) * | 2016-08-08 | 2016-10-12 | 广东紫方环保技术有限公司 | Organic exhaust gas treatment device |
| CN107162089A (en) * | 2017-07-12 | 2017-09-15 | 湖南美奕机电科技有限公司 | A kind of oil-water separating device for kitchen waste |
| CN207227055U (en) * | 2017-07-11 | 2018-04-13 | 佛山市顺德区绿点废水回收处理有限公司 | A kind of sealed air floatation machine |
| CN111170394A (en) * | 2018-11-13 | 2020-05-19 | 上海华畅环保设备发展有限公司 | Emission reduction method and device for volatile organic compounds in oily sewage cleaning treatment |
| CN210544324U (en) * | 2019-07-11 | 2020-05-19 | 厦门仲欧环保科技有限公司 | Circulating water backflow purification mechanism of VOCs (volatile organic compounds) waste gas treatment tower and treatment tower thereof |
-
2020
- 2020-12-03 CN CN202011411332.0A patent/CN112479407B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5256299A (en) * | 1990-07-02 | 1993-10-26 | International Environmental Systems, Inc., Usa | Method and apparatus for liquid treatment |
| JP2010110681A (en) * | 2008-11-05 | 2010-05-20 | Tominaga Oil Pump Mfg Co Ltd | Apparatus for recovering volatile hydrocarbon |
| CN102515308A (en) * | 2011-12-23 | 2012-06-27 | 天津市茂联科技有限公司 | Self-inflating micro-bubble oil remover and oil removing method |
| CN205532562U (en) * | 2016-02-19 | 2016-08-31 | 中石化节能环保工程科技有限公司 | Oilfield produced liquid divides and water treatment facilities on spot |
| CN106000033A (en) * | 2016-08-08 | 2016-10-12 | 广东紫方环保技术有限公司 | Organic exhaust gas treatment device |
| CN207227055U (en) * | 2017-07-11 | 2018-04-13 | 佛山市顺德区绿点废水回收处理有限公司 | A kind of sealed air floatation machine |
| CN107162089A (en) * | 2017-07-12 | 2017-09-15 | 湖南美奕机电科技有限公司 | A kind of oil-water separating device for kitchen waste |
| CN111170394A (en) * | 2018-11-13 | 2020-05-19 | 上海华畅环保设备发展有限公司 | Emission reduction method and device for volatile organic compounds in oily sewage cleaning treatment |
| CN210544324U (en) * | 2019-07-11 | 2020-05-19 | 厦门仲欧环保科技有限公司 | Circulating water backflow purification mechanism of VOCs (volatile organic compounds) waste gas treatment tower and treatment tower thereof |
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| Publication number | Publication date |
|---|---|
| CN112479407B (en) | 2024-03-15 |
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