CN112479407B - Device and method for efficiently separating oil in extracted water phase by using extracted organic waste gas - Google Patents
Device and method for efficiently separating oil in extracted water phase by using extracted organic waste gas Download PDFInfo
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- CN112479407B CN112479407B CN202011411332.0A CN202011411332A CN112479407B CN 112479407 B CN112479407 B CN 112479407B CN 202011411332 A CN202011411332 A CN 202011411332A CN 112479407 B CN112479407 B CN 112479407B
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 42
- 239000007789 gas Substances 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000010815 organic waste Substances 0.000 title claims abstract description 9
- 238000002156 mixing Methods 0.000 claims abstract description 50
- 239000012071 phase Substances 0.000 claims abstract description 37
- 238000000605 extraction Methods 0.000 claims abstract description 25
- 239000012074 organic phase Substances 0.000 claims abstract description 21
- 238000005352 clarification Methods 0.000 claims abstract description 6
- 238000005188 flotation Methods 0.000 claims abstract 7
- 235000019198 oils Nutrition 0.000 claims description 59
- 239000008346 aqueous phase Substances 0.000 claims description 7
- 238000005238 degreasing Methods 0.000 claims description 6
- 239000000835 fiber Substances 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 3
- 235000019476 oil-water mixture Nutrition 0.000 claims description 3
- 238000000926 separation method Methods 0.000 claims description 3
- 230000000153 supplemental effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 3
- 239000002245 particle Substances 0.000 description 5
- 239000002904 solvent Substances 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 2
- 150000001875 compounds Chemical class 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- 238000009854 hydrometallurgy Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000003085 diluting agent Substances 0.000 description 1
- 230000005484 gravity Effects 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
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910000510 noble metal Inorganic materials 0.000 description 1
- 238000005192 partition Methods 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
- 230000000630 rising effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Geochemistry & Mineralogy (AREA)
- Water Supply & Treatment (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Geology (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physical Water Treatments (AREA)
Abstract
The invention discloses a device and a method for efficiently separating oil in an extraction water phase by utilizing extraction organic waste gas, comprising 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 clarification chamber, an air flotation mixing chamber and a second clarification 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 top of the initial mixing chamber and the air flotation mixing chamber is 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 the pipeline; the first clarifying chamber, the air floatation mixing chamber and the second clarifying chamber are communicated with one another. The invention effectively solves the problem of volatilization loss of the organic phase, improves the operation environment, improves the oil removal effect and reduces the oil content in the water phase to be within 5 ppm.
Description
Technical Field
The invention belongs to the field of hydrometallurgy, and relates to a device and a method for efficiently separating oil in an extracted water phase by using extracted organic waste gas.
Background
In the hydrometallurgy field, the extraction operation is taken as an important chemical unit, and the extraction refers to the unit operation of transferring a compound from one solvent to another solvent by utilizing the difference of solubility or partition coefficients of the compound in two mutually-insoluble solvents and extracting most chemical substances repeatedly for multiple times, so that the extraction method 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, and particularly, some extraction reactions need to be heated and extracted at high temperature, the high temperature leads to volatilization of an organic phase, so that loss of an extractant and a diluent is caused, and the organic phase volatilizes and overflows, so that the on-site operation environment is deteriorated, and the occupational health of operators is not facilitated.
In the layering process of the organic phase and the water phase, the organic phase mainly exists in the forms of floating oil, dispersed oil, emulsified oil, dissolved oil and the like. Oil slick: the oil has larger dispersed particles in water, the particle size of the oil is generally larger than 100 mu m, and the oil can float up quickly after standing and float on the water surface as an oil film of a continuous phase. Dispersing oil: the dispersion particle size of the oil in water is 10-100 mu m, and the oil is suspended in the water as tiny oil globules and is unstable, and the oil tends to form floating oil after standing for a certain time. Emulsified oil: the particle size of the oil droplets is less than 10. Mu.m, generally 0.1 to 2. Mu.m. Dissolving oil: the oil exists in the water phase in a molecular state or chemically, forming a stable homogeneous system, typically less than a few microns in particle size.
Wherein, the dispersion oil, the emulsified oil and the dissolved oil are difficult to separate and are easy to be introduced into the water phase, and the oil content in the water phase is generally up to 50-100ppm, which affects the quality of the product.
Disclosure of Invention
Aiming at the defects existing in the prior art, the invention provides a device and a method for efficiently separating oil in an extraction water phase by using extraction organic waste gas.
The invention is realized by the following technical scheme.
The invention claims and protects a device for efficiently separating oil in an extraction water phase by utilizing extraction 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 floatation 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 floatation mixing chamber, the top of the initial mixing chamber and the air floatation mixing chamber is 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 the pipeline; the initial mixing chamber, the first clarifying chamber, the air floatation mixing chamber and the second clarifying chamber are communicated.
In the invention, the side upper part of the initial mixing chamber is provided with an aqueous phase inlet, and the side lower part is provided with an organic phase inlet.
In the invention, the side upper part of the second clarifying chamber is provided with an organic phase outlet, and the side lower part is provided with a water phase outlet.
In the invention, the discharging 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 oil in extracted water phase, mixing organic phase and water phase uniformly in a mixing chamber, overflowing the uniformly mixed oil-water mixture into a first clarifying chamber, separating out floating oil, enabling the water phase passing through the first clarifying chamber to enter an air floatation mixing chamber, enabling microbubbles generated by an organic bubble generator to enter the bottom of the air floatation mixing chamber, accumulating dispersed oil, floating oil and dissolved oil in the water phase into floating oil for removal, enabling the water phase after air floatation degreasing to enter a second clarifying chamber, carrying out natural clarification and lipophilic fiber fine filtration degreasing, and discharging from an water phase outlet below the side of the second clarifying chamber. The oil gas removed in the first clarifying chamber and the air floatation mixing chamber is recovered to the organic bubble generator through a pipeline.
The beneficial technical effects of the invention are as follows:
the invention utilizes the extraction tank to extract and collect the volatile gas of the organic phase through the negative pressure fan, the bubble generator forms microbubbles of the organic phase component, the microbubbles are introduced into the water phase, the microbubbles are composed of nonpolar molecules, can be combined with hydrophobic oil, and rise with oil drops, the rising speed can be increased by nearly thousand times, and the oil-water separation efficiency is greatly improved. The oil drops are accumulated to form oil slick, the oil slick layer recovers volatile organic phase in the extraction process and organic phase entrained in the water phase through the organic phase collecting tank, thereby effectively solving the volatilization loss of the organic phase, improving the working environment, improving the oil removal effect and reducing the oil content in the water phase to be within 1 ppm.
Drawings
Fig. 1 is a schematic view of the structure of the device 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 extraction 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 floatation 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 floatation mixing chamber, the top of the initial mixing chamber and the air floatation mixing chamber is 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 the pipeline; the initial mixing chamber, the first clarifying chamber, the air floatation mixing chamber and the second clarifying chamber are communicated with one another; wherein, the upper side of the initial mixing chamber is provided with an aqueous phase inlet, and the lower side of the initial mixing chamber is provided with an organic phase inlet; the side upper part of the second clarifying chamber is provided with an organic phase outlet, and the side lower part of the second clarifying chamber is provided with a water phase outlet; the discharging 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 organic phase and water phase uniformly in the mixing chamber, overflowing the uniformly mixed oil-water mixture into a first clarifying chamber, separating out oil slick to remove 99% of organic phase due to layering of oil-water specific gravity difference oil phase and water phase, enabling the water phase separated in the first clarifying chamber to enter an air floatation mixing chamber, enabling microbubbles generated by an organic bubble generator to enter the bottom of the air floatation mixing chamber, accumulating dispersed oil, floated oil and dissolved oil in the water phase into oil slick for removing due to lipophilicity of the organic microbubbles, enabling the water phase after air floatation degreasing to enter a second clarifying chamber, and enabling oil content in the water phase to be reduced to be within 1ppm through natural clarification and lipophilic fiber fine filtration for degreasing, and discharging from an aqueous phase outlet below the side of the second clarifying chamber; wherein the oil gas removed in the first clarifying chamber and the air floatation mixing chamber is recovered to the organic bubble generator through a pipeline.
The foregoing description of the preferred embodiments of the invention is merely illustrative of the invention and is not intended to be limiting. It should be noted that, for those skilled in the art, other equivalent modifications can be made in light of the technical teaching provided by the present invention, and the present invention can be implemented as the scope of protection.
Claims (3)
1. The device for efficiently separating oil in an extracted water phase by utilizing extracted organic waste gas is characterized by comprising an extraction tank (1), a negative pressure circulation system (2) and an organic bubble generator (3), wherein the extraction tank (1) is provided with an initial mixing chamber (4), a first clarification chamber (5), an air flotation mixing chamber (6) and a second clarification chamber (7) which are sequentially arranged, the top of the organic bubble generator (3) is provided with an organic micro-bubble gas inlet pipe (8) communicated with the air flotation mixing chamber (6), the organic micro-bubble gas inlet pipe (8) extends into the inner bottom of the air flotation mixing chamber (6), the top of the initial mixing chamber (4) and the air flotation mixing chamber (6) is 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 floatation mixing chamber and the second clarifying chamber are communicated with one another;
the side upper part of the initial mixing chamber is provided with an aqueous phase inlet, and the side lower part of the initial mixing chamber is provided with an organic phase inlet;
the side upper part of the second clarifying chamber is provided with an organic phase outlet, and the side lower part of the second clarifying chamber is provided with a water phase outlet;
a discharge end in the second clarifying chamber is provided with lipophilic filter fibers;
an agitator (11) is provided in the initial mixing chamber.
2. The apparatus for efficient separation of oil from an extracted aqueous phase using extracted organic waste gas according to claim 1, wherein the organic bubble generator has a supplemental compressed air port at the top.
3. A method for separating and extracting oil in aqueous phase by using the device of claim 1 or 2, mixing organic phase and water phase uniformly in a mixing chamber, feeding the uniformly mixed oil-water mixture into a first clarifying chamber, separating out floating oil, feeding the water phase passing through the first clarifying chamber into an air-float mixing chamber, feeding microbubbles generated by an organic bubble generator into the bottom of the air-float mixing chamber, accumulating dispersed oil, floating oil and dissolved oil in the water phase into floating oil for removal, feeding the water phase after air-float degreasing into a second clarifying chamber, filtering and degreasing by natural clarifying and lipophilic fiber, and discharging from an aqueous 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 |
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| 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 CN112479407A (en) | 2021-03-12 |
| CN112479407B true CN112479407B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| 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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| CN (1) | CN112479407B (en) |
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 |
| 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 |
| 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 |
-
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 |
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| CN112479407A (en) | 2021-03-12 |
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