CN112957768A - Novel automatic baffle plate pulse extraction column system for experiments - Google Patents
Novel automatic baffle plate pulse extraction column system for experiments Download PDFInfo
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- CN112957768A CN112957768A CN202110188084.6A CN202110188084A CN112957768A CN 112957768 A CN112957768 A CN 112957768A CN 202110188084 A CN202110188084 A CN 202110188084A CN 112957768 A CN112957768 A CN 112957768A
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- storage tank
- intermediate storage
- clarification section
- valve
- pulse
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- 238000000605 extraction Methods 0.000 title claims abstract description 42
- 238000002474 experimental method Methods 0.000 title claims abstract description 11
- 238000003860 storage Methods 0.000 claims abstract description 44
- 238000005352 clarification Methods 0.000 claims abstract description 36
- 239000012074 organic phase Substances 0.000 claims abstract description 26
- 238000005303 weighing Methods 0.000 claims abstract description 18
- 239000008346 aqueous phase Substances 0.000 claims abstract description 11
- 238000006243 chemical reaction Methods 0.000 claims abstract description 7
- 238000012432 intermediate storage Methods 0.000 claims description 49
- 239000012071 phase Substances 0.000 claims description 25
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 21
- 230000001105 regulatory effect Effects 0.000 claims description 4
- 238000005259 measurement Methods 0.000 abstract description 5
- 238000000926 separation method Methods 0.000 abstract description 4
- 238000000638 solvent extraction Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 20
- 238000012546 transfer Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000011160 research Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 239000003758 nuclear fuel Substances 0.000 description 3
- 238000012805 post-processing Methods 0.000 description 3
- 230000003321 amplification Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 239000002915 spent fuel radioactive waste Substances 0.000 description 2
- 229910052770 Uranium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000001311 chemical methods and process Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000005501 phase interface Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
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- 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
-
- 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
- B01D11/0484—Controlling means
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D11/00—Solvent extraction
- B01D2011/002—Counter-current extraction
Abstract
The valve is a novel automatic baffle plate pulse extraction column system for experiments, which comprises a reaction column main body, an upper clarification section, a lower clarification section, a pulse leg, two aqueous phase storage tanks, two organic phase storage tanks, four middle storage tanks, four weighing systems, two metering pumps and a valve, wherein the upper clarification section and the lower clarification section are respectively arranged above and below the reaction column main body; the invention provides novel laboratory solvent extraction separation equipment with accurate automatic control flow measurement for the field of solvent extraction, and combines an automatic control and flow measurement device to enable an operation system of a pulse extraction column to be more accurate and convenient.
Description
Technical Field
The invention relates to a pulse extraction column system, in particular to a novel automatic baffle plate pulse extraction column system for experiments, and belongs to the field of solution extraction.
Background
The nuclear fuel post-processing industry is a chemical process related to strong radioactivity and strong corrosivity, and the particularity of the industrial process requires that the used equipment has long service life and is convenient to maintain. The pulse extraction column has the advantages of small occupied area and high treatment capacity, particularly no moving parts are arranged in the column, interface dirt generated is easy to treat, the pulse extraction column has good critical dimension and other factors, and becomes the extraction equipment commonly used in the nuclear fuel post-treatment factory. The pulse extraction column is a column type extraction device with energy input, and can make the fluid in the column pulsate rapidly and reciprocally by inputting energy, so that it not only can pulverize liquid drop and increase dispersed phase residual fraction, but also can greatly increase contact area of two phases, and can raise turbulence of phase interface to promote mass transfer process. The main research in the domestic and foreign nuclear industries is the three types of pulse extraction columns of standard plates (sieve plates), nozzle plates and baffle plates. The standard plate is applied in the industry at an early stage and is gradually eliminated due to poor hydraulic performance and mass transfer effect; the nozzle plate is mainly applied to British post-processing plants and Chinese spent fuel post-processing pilot plants; the baffle plate pulse extraction column is researched and developed in the seventies of the last century, and compared with a sieve plate type pulse column and a nozzle plate type pulse column, the baffle plate pulse extraction column has the advantages that the operable area is wider, the operation stability is improved, materials containing solid particles can be processed, and the requirements of natural uranium extraction and purification are met. But also can ensure critical safety, prevent channeling, meet the extraction separation requirement of nuclear fuel post-treatment and become the main choice of the current and future post-treatment plants.
The existing laboratory pulse extraction column system mainly comprises a column main body, a feed liquid conveying device, a feed liquid control device, a feed liquid storage device, a metering device and a pulse generating device. The main body of the column mainly comprises an extraction section and an upper clarification section and a lower clarification section.
The prior art has the following disadvantages: 1. the feeding and discharging flow of the extraction column under the experimental system cannot be accurately calibrated, the feeding flow can only be realized by a calibration pump, and the accurate measurement cannot be realized, so that the amplification of the pulse extraction column is inconvenient; 2. the existing extraction column for experiments is complex to operate and not automatic enough 3, and the research on the hydraulic property and the mass transfer property of the baffler pulse extraction column is not thorough.
Disclosure of Invention
The invention aims to design a set of pulse extraction column system for liquid-liquid separation of extraction liquid, perform extraction and back extraction experimental research, research the hydraulic property and mass transfer property in the pulse extraction column, provide experimental data and theoretical support for the design and amplification of the pulse extraction column in the spent fuel post-treatment industry, and provide data support for the simulation of the post-treatment pulse extraction column.
The purpose of the invention is realized as follows:
a novel automatic baffle plate pulse extraction column system for experiments comprises a reaction column main body, an upper clarification section, a lower clarification section, a pulse leg, two aqueous phase storage tanks, two organic phase storage tanks, four middle storage tanks, four weighing systems, two metering pumps and a valve, wherein the upper clarification section and the lower clarification section are respectively arranged above and below the reaction column main body; a first electromagnetic valve is arranged between the first water phase storage tank and the first intermediate storage tank, the first intermediate storage tank is arranged on the first weighing system, the first intermediate storage tank is communicated with the lower clarification section, a quantity regulating valve is arranged between the first intermediate storage tank and the lower clarification section, a second electromagnetic valve is arranged between the second aqueous phase storage tank and the second intermediate storage tank, the second intermediate storage tank is arranged on a second weighing system, the second intermediate storage tank is communicated with the upper clarification section, a first metering pump is arranged between the second intermediate storage tank and the upper clarification section, a third electromagnetic valve is arranged between the first organic phase storage tank and the third intermediate storage tank, the third intermediate storage tank is arranged on a third weighing system and is communicated with the upper clarification section, a fourth electromagnetic valve is arranged between the second organic phase storage tank and a fourth intermediate storage tank, the fourth intermediate storage tank is arranged on a fourth weighing system, and the fourth intermediate storage tank is communicated with the lower clarification section and is provided with a second metering pump.
A first manual valve is arranged between the first water phase storage tank and the second water phase storage tank; a second manual valve is arranged between the first organic phase storage tank and the second organic phase storage tank;
the pulse generator is also provided with a rotary valve system and an air inlet system, wherein the rotary valve system is communicated with the pulse legs, and the machine system is connected with the rotary valve.
Compared with the prior art, the invention has the beneficial effects that:
the invention provides novel laboratory solvent extraction separation equipment with accurate automatic control flow measurement for the field of solvent extraction, and the pulse extraction column operation system is more accurate and convenient by combining an automatic control and flow measurement device.
Drawings
FIG. 1 is a diagram of a novel automatic baffle plate pulse extraction column system for experiments.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
In the figure, 1 is a reaction column main body, 2 is an upper clarification section, 3 is a lower clarification section, 4 is a pulse leg, 5 is a first aqueous phase storage tank, 6 is a second aqueous phase storage tank, 7 is a first aqueous phase storage tank, 8 is a second aqueous phase storage tank, 9 is a first intermediate storage tank, 10 is a second intermediate storage tank, 11 is a third intermediate storage tank, 12 is a fourth intermediate storage tank, 15 is a frame system, 16 is a numerical control system, 17 is a rotary valve system, 18 is an air inlet system, 19 is a first electromagnetic valve, 20 is a second electromagnetic valve, 21 is a third electromagnetic valve, 22 is a fourth electromagnetic valve, 23 is a first weighing system, 24 is a second weighing system, 25 is a third heavy system, 26 is a fourth urban system, 27 is a first manual valve, 28 is a second manual valve, 29 is a volume regulating valve, and 30 is a moving platform.
The invention will be described in detail with reference to the following drawings and specific embodiments:
the initial water phase feed liquid is in the second water phase storage tank 6, the second electromagnetic valve 20 is arranged at the outlet of the second water phase storage tank, when the second weighing system 23 below the second intermediate storage tank 10 detects that the liquid quality in the second intermediate storage tank 10 is less than a set value, the second electromagnetic valve 20 is opened, the feed liquid in the second water phase storage tank 6 flows into the second intermediate storage tank 10, the water phase metering pump 13 behind the second intermediate storage tank 10 pumps the water phase into the upper clarification section of the extraction column, and when the liquid in the second intermediate storage tank 10 reaches a certain weight, the second electromagnetic valve 20 is closed.
The initial organic phase feed liquid is in the second organic phase storage tank 8, the outlet of the second organic phase storage tank has a fourth electromagnetic valve 22, when the fourth weighing system 26 under the fourth intermediate storage tank 12 detects that the liquid quality in the fourth intermediate storage tank 12 is less than the set value, the fourth electromagnetic valve 22 is opened, the feed liquid in the second organic phase storage tank 8 flows into the fourth intermediate storage tank 12, the organic phase metering pump 14 behind the fourth intermediate storage tank 12 pumps the organic phase into the lower clarification section part of the extraction column, and when the liquid in the fourth intermediate storage tank 12 reaches a certain weight, the fourth electromagnetic valve 22 is closed.
When the experiment is carried out, firstly, a one-phase metering pump (such as a water phase) is opened, the lower clarification section of the column and the main body of the column are filled with the water phase, then, the organic-phase metering pump is opened, the water phase and the organic phase move downwards and upwards respectively under the action of gravity and buoyancy, the countercurrent effect is achieved, then, the pulse generating device is opened, gas is adjusted to the required pressure through the air compressor, the pulse legs are introduced through the rotary valve and the pipeline, the rotary valve controls the frequency of the gas to be injected, the pulse is generated, the liquid in the column moves up and down in a reciprocating mode, and the extraction and.
The organic phase in the column gathers in the upper clarification section due to buoyancy and flows out in an overflow mode, the flowing organic phase flows into a third intermediate storage tank 11, a third electromagnetic valve 21 is arranged at an outlet of the third intermediate storage tank 11, when a third weighing system 25 below the third intermediate storage tank 11 detects that the liquid mass in the third intermediate storage tank 11 reaches a set value, the third electromagnetic valve is opened, the organic phase flows into a first organic phase storage tank 7, the first organic phase storage tank 7 is connected with a second organic phase storage tank 8, and if a reciprocating experiment is needed, a second manual valve 28 between the two storage tanks can be opened. When the liquid in the third intermediate reservoir 11 reaches a certain weight, the third electromagnetic valve 21 is closed.
The water phase in the column gathers in the lower clarifying section due to gravity and flows out under the action of pressure, the effluent water phase flows into the first intermediate storage tank 9, a quantity regulating valve 29 with adjustable opening degree is arranged between the lower clarifying section and the first intermediate storage tank 9, the outlet flow of the water phase is controlled by adjusting the opening degree to achieve the effect of controlling the interface position, a first electromagnetic valve 19 is arranged at the outlet of the first intermediate storage tank 9, the first electromagnetic valve is opened after a first weighing system 13 below the first intermediate storage tank 9 detects that the liquid mass in the first intermediate storage tank 9 reaches a set value, the water phase flows into the first water phase storage tank 6, the first water phase storage tank 5 is connected with the second water phase storage tank 6, and if a reciprocating experiment is needed, a first manual valve 27 between the two storage tanks can be opened. When the liquid in the first intermediate reservoir 9 reaches a certain weight, the first electromagnetic valve 19 is closed.
The upper clarification section and the lower clarification section are respectively provided with four pressure sensors which can measure the pressure of eight different positions of the upper clarification section and the lower clarification section, and then the column weight, the retention fraction and the like are calculated by a differential pressure method. The data measured by the weighing system can be stored in the computer, and the accurate flow of each port can be calculated.
The working principle of the invention is that the water phase and the organic phase liquid-liquid are in countercurrent contact by utilizing gravity and buoyancy to complete the extraction or back extraction process, and simultaneously, the mass transfer effect of the two phases is better under the action of pulse.
The key point and point to be protected of the invention is that the pulse extraction column system can measure and check the flow, and simultaneously comprises an automatic control device and the design of the whole system.
Claims (3)
1. A novel automatic baffle plate pulse extraction column system for experiments is characterized by comprising a reaction column main body, an upper clarification section, a lower clarification section, a pulse leg, two aqueous phase storage tanks, two organic phase storage tanks, four middle storage tanks, four weighing systems, two metering pumps and a valve, wherein the upper clarification section and the lower clarification section are respectively arranged above and below the reaction column main body; a first electromagnetic valve is arranged between the first water phase storage tank and the first intermediate storage tank, the first intermediate storage tank is arranged on the first weighing system, the first intermediate storage tank is communicated with the lower clarification section, a quantity regulating valve is arranged between the first intermediate storage tank and the lower clarification section, a second electromagnetic valve is arranged between the second aqueous phase storage tank and the second intermediate storage tank, the second intermediate storage tank is arranged on a second weighing system, the second intermediate storage tank is communicated with the upper clarification section, a first metering pump is arranged between the second intermediate storage tank and the upper clarification section, a third electromagnetic valve is arranged between the first organic phase storage tank and the third intermediate storage tank, the third intermediate storage tank is arranged on a third weighing system and is communicated with the upper clarification section, a fourth electromagnetic valve is arranged between the second organic phase storage tank and a fourth intermediate storage tank, the fourth intermediate storage tank is arranged on a fourth weighing system, and the fourth intermediate storage tank is communicated with the lower clarification section and is provided with a second metering pump.
2. The experimental novel automated baffled pulse extraction column system according to claim 1, wherein a first manual valve is arranged between the first aqueous phase storage tank and the second aqueous phase storage tank; and a second manual valve is arranged between the first organic phase storage tank and the second organic phase storage tank.
3. The experimental novel automated baffled pulse extraction column system according to claim 1, wherein a rotary valve system and an air inlet system are further provided, the rotary valve system is communicated with the pulse leg, and the machine system is connected with the rotary valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188084.6A CN112957768A (en) | 2021-02-18 | 2021-02-18 | Novel automatic baffle plate pulse extraction column system for experiments |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110188084.6A CN112957768A (en) | 2021-02-18 | 2021-02-18 | Novel automatic baffle plate pulse extraction column system for experiments |
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| Publication Number | Publication Date |
|---|---|
| CN112957768A true CN112957768A (en) | 2021-06-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110188084.6A Pending CN112957768A (en) | 2021-02-18 | 2021-02-18 | Novel automatic baffle plate pulse extraction column system for experiments |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686525A1 (en) * | 1992-01-24 | 1993-07-30 | British Nuclear Fuels Plc | EXTRACTION INSTALLATION WITH SOLVENT. |
| CN103080276A (en) * | 2010-03-01 | 2013-05-01 | L·B·维勒 | Solvent extraction process to stabilize, desulphurize and dry wide range diesels, stabilized wide range diesels obtained and their uses |
| CN106621456A (en) * | 2017-02-06 | 2017-05-10 | 福州大学 | Pulsed packed extraction column experimental device and experimental method thereof |
| CN206823220U (en) * | 2016-11-30 | 2018-01-02 | 天津市睿智天成科技发展有限公司 | A kind of novel extraction actual training device |
| CN208575709U (en) * | 2018-07-31 | 2019-03-05 | 冀东海天水泥闻喜有限责任公司 | A kind of liquid grinding aid quantifies add-on system |
-
2021
- 2021-02-18 CN CN202110188084.6A patent/CN112957768A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2686525A1 (en) * | 1992-01-24 | 1993-07-30 | British Nuclear Fuels Plc | EXTRACTION INSTALLATION WITH SOLVENT. |
| CN103080276A (en) * | 2010-03-01 | 2013-05-01 | L·B·维勒 | Solvent extraction process to stabilize, desulphurize and dry wide range diesels, stabilized wide range diesels obtained and their uses |
| CN206823220U (en) * | 2016-11-30 | 2018-01-02 | 天津市睿智天成科技发展有限公司 | A kind of novel extraction actual training device |
| CN106621456A (en) * | 2017-02-06 | 2017-05-10 | 福州大学 | Pulsed packed extraction column experimental device and experimental method thereof |
| CN208575709U (en) * | 2018-07-31 | 2019-03-05 | 冀东海天水泥闻喜有限责任公司 | A kind of liquid grinding aid quantifies add-on system |
Non-Patent Citations (1)
| Title |
|---|
| 毕升等: "30%TBP-煤油/HNO_3体系在折流板脉冲萃取柱中的水力学性能", 《原子能科学技术》 * |
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Application publication date: 20210615 |
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