CN112138593A - Production device of tetraalkyl phosphonium salt - Google Patents
Production device of tetraalkyl phosphonium salt Download PDFInfo
- Publication number
- CN112138593A CN112138593A CN201910569560.1A CN201910569560A CN112138593A CN 112138593 A CN112138593 A CN 112138593A CN 201910569560 A CN201910569560 A CN 201910569560A CN 112138593 A CN112138593 A CN 112138593A
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- mixing chamber
- chamber
- recovery
- liquid
- mixing
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- 125000005497 tetraalkylphosphonium group Chemical group 0.000 title claims abstract description 19
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 9
- 239000007788 liquid Substances 0.000 claims abstract description 61
- 238000002156 mixing Methods 0.000 claims abstract description 60
- 238000011084 recovery Methods 0.000 claims abstract description 44
- 239000000243 solution Substances 0.000 claims abstract description 15
- 239000011259 mixed solution Substances 0.000 claims abstract description 14
- 239000012452 mother liquor Substances 0.000 claims abstract description 14
- 239000002244 precipitate Substances 0.000 claims abstract description 11
- 239000000654 additive Substances 0.000 claims abstract description 8
- 238000003756 stirring Methods 0.000 claims abstract description 6
- 238000007789 sealing Methods 0.000 claims description 58
- 239000007787 solid Substances 0.000 claims description 14
- 239000002994 raw material Substances 0.000 claims description 12
- 229910052783 alkali metal Inorganic materials 0.000 claims description 7
- -1 alkali metal salt Chemical class 0.000 claims description 7
- 150000001875 compounds Chemical class 0.000 claims description 7
- 229910021645 metal ion Inorganic materials 0.000 claims description 7
- ACVYVLVWPXVTIT-UHFFFAOYSA-N phosphinic acid Chemical compound O[PH2]=O ACVYVLVWPXVTIT-UHFFFAOYSA-N 0.000 claims description 6
- 239000013049 sediment Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 1
- 239000000126 substance Substances 0.000 abstract description 2
- 238000006243 chemical reaction Methods 0.000 description 4
- 239000002608 ionic liquid Substances 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000002904 solvent Substances 0.000 description 4
- 239000003960 organic solvent Substances 0.000 description 3
- 239000008346 aqueous phase Substances 0.000 description 2
- 239000002798 polar solvent Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000001174 ascending effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000002051 biphasic effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000012074 organic phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
- 150000004714 phosphonium salts Chemical class 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000000844 transformation Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/04—Combinations of filters with settling tanks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F27/00—Mixers with rotary stirring devices in fixed receptacles; Kneaders
- B01F27/80—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis
- B01F27/90—Mixers with rotary stirring devices in fixed receptacles; Kneaders with stirrers rotating about a substantially vertical axis with paddles or arms
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
- B01F33/00—Other mixers; Mixing plants; Combinations of mixers
- B01F33/80—Mixing plants; Combinations of mixers
- B01F33/836—Mixing plants; Combinations of mixers combining mixing with other treatments
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F9/00—Compounds containing elements of Groups 5 or 15 of the Periodic Table
- C07F9/02—Phosphorus compounds
- C07F9/28—Phosphorus compounds with one or more P—C bonds
- C07F9/54—Quaternary phosphonium compounds
- C07F9/5407—Acyclic saturated phosphonium compounds
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Molecular Biology (AREA)
Abstract
The invention discloses a production device of tetraalkyl phosphonium salt, and relates to the technical field of chemical equipment. The production device of the tetraalkyl phosphonium salt comprises a mixing chamber, a stirring chamber and a stirring device, wherein a space is provided for mixing mother liquor and additives, the top of the mixing chamber is provided with an opening, the bottom of the mixing chamber is provided with a liquid outlet, and a mixing blade for stirring mixed solution is arranged in the mixing chamber; a cover for closing the opening at the top of the mixing chamber; the filter screen is arranged in the mixing chamber, is positioned above the liquid outlet hole and is used for supporting effective precipitates separated out from the mixed solution; the recovery chamber, with go out liquid hole intercommunication, collect go out liquid hole exhaust residual solution, recovery chamber bottom intercommunication recovery pump, recovery pump one end intercommunication the recovery chamber, the other end intercommunication the mixing chamber, pass through in the recovery chamber the filterable mixed liquid of secondary filter screen is controlled by the recovery pump gets into the mixing chamber again and deposits statically again, forms a circulation.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to a production device of tetraalkyl phosphonium salt.
Background
Low melting point or liquid phosphonium salts may be used as polar solvents known as "ionic liquids". Ionic liquids offer an attractive possible alternative to traditional organic solvents for chemical reactions. The low vapor pressure of ionic liquids is an important feature in industrial applications, which avoids many of the contamination problems typically encountered with conventional organic solvents. Since ionic liquids are often composed of ions with poor coordination capacity, they may form solvents with high polarity but weak coordination capacity. Moreover, many of these solvents are immiscible with conventional organic solvents, thus providing a non-aqueous polar solvent for the biphasic system. Because of their unique solvent characteristics, they can be used to introduce unusual solvent combinations in the same phase.
During the preparation of the tetraalkylphosphonium salts, the mother liquor remaining from the reaction remains, the components of the mother liquor being the organic and aqueous phases, there being effective mixtures which continue to precipitate. The aqueous phase can be removed by vacuum stripping, whereas in the prior art, the remaining mother liquor is typically discarded, creating waste.
If the remaining solution is used as the starting material or mother liquor for the re-extraction of the precipitate, at least a solid or liquid containing dialkylphosphinic acid and/or alkali metal salt thereof and a solid or liquid containing a metal ion compound are added to the solution, and the above two additives are mixed with the mother liquor and stirred to obtain an effective precipitate.
For the mixing of the raw material and the mother liquor, a mixing chamber is usually required, and the raw material can be still settled again after being mixed and precipitated in the mixing chamber, so that equipment capable of achieving the aim of re-settling is required.
Disclosure of Invention
The technical problem to be solved by the invention is to overcome the defects of the prior art and provide a production device of tetraalkyl phosphonium salt, and the residual solution can be settled and separated out again after effective precipitation is obtained.
In order to solve the above technical problems, the present invention provides an apparatus for producing a tetraalkylphosphonium salt comprising,
the mixing chamber is used for providing a space for mixing mother liquor and additives, an opening is formed in the top of the mixing chamber, a liquid outlet hole is formed in the bottom of the mixing chamber, and a mixing blade used for stirring mixed solution is arranged in the mixing chamber;
the raw material bin is internally provided with mother liquor and is controlled by a metering pump to quantitatively supply the mother liquor raw material to the mixing chamber;
additive storage bins which are communicated with the mixing chamber, are at least two and are respectively used for storing the solid or liquid containing the dialkyl phosphinic acid and/or the alkali metal salt thereof and the solid or liquid containing the metal ion compound, and quantitatively conveying the solid or liquid containing the dialkyl phosphinic acid and/or the alkali metal salt thereof and the solid or liquid containing the metal ion compound into the mixing chamber;
a cover for closing the opening at the top of the mixing chamber;
the filter screen is arranged in the mixing chamber, is positioned above the liquid outlet hole and is used for supporting effective precipitates separated out from the mixed solution;
the recovery chamber, with go out liquid hole intercommunication, collect go out liquid hole exhaust residual solution, recovery chamber bottom intercommunication recovery pump, recovery pump one end intercommunication the recovery chamber, the other end intercommunication the mixing chamber, pass through in the recovery chamber the filterable mixed liquid of secondary filter screen is controlled by the recovery pump gets into the mixing chamber again and deposits statically again, forms a circulation.
And a sealing plug is arranged in the recovery chamber and controlled by a driving device to open or close the liquid outlet hole.
The sealing plug is arranged on the sealing plate, the driving device is a sealing air cylinder, the output end of the sealing air cylinder supports the sealing plate and drives the sealing plate to do intermittent reciprocating motion along the vertical direction, and the liquid outlet hole is opened or closed simultaneously.
The recovery chamber comprises an inner annular wall and an outer annular wall, an annular accommodating cavity is formed between the inner annular wall and the outer annular wall, the top of the accommodating cavity is open, and the edge of the sealing plate is positioned above the opening of the accommodating cavity.
The height of the top of the inner ring wall is lower than that of the outer ring wall, so that a space for the sealing plate to lift is reserved.
And the edge of the sealing plate is provided with a flow guide arc surface which guides the solution on the sealing plate to flow into the accommodating cavity of the recovery chamber.
The bottom of the sealing plate is provided with a groove which is sunken towards the inside of the sealing plate, and the groove forms an inclined plane which prevents liquid from flowing on the ground of the sealing plate.
And the inner ring wall is provided with a mounting plate, and the sealing cylinder is arranged on the mounting plate.
The liquid outlet holes are uniformly distributed at the bottom of the mixing chamber.
The invention has the beneficial effects that:
(1) the invention drives the sealing plug to be inserted into the liquid outlet hole for sealing through the ascending and descending of the sealing plate, or to be separated from the liquid outlet hole to open the liquid outlet hole. When the liquid outlet hole is opened, the mixed liquid flows out along the sealing plug, and the sealing plug also plays a role in drainage.
(2) The recovery chamber is matched with the recovery pump to recycle the solution after reaction, the difficulty of continuously separating out the precipitate becomes larger under the condition that a certain amount of precipitate is separated out, and the flow of the mixed solution can further influence the continuous separation of the precipitate, so that in the scheme, the residual solution is reintroduced into the mixing chamber to be kept stand for precipitation, the aim of fully separating out the precipitate can be fulfilled, the raw materials are further saved, and more effective precipitates are obtained.
(3) The mixed solution is guided by the flow guide arc surface to accurately fall into the annular accommodating cavity of the recovery chamber, and the intersection of the inclined surface and the flow guide arc surface forms a tip, so that the mixed solution is prevented from being separated from the opening range of the accommodating cavity.
Drawings
FIG. 1 is a schematic view of the internal structure of the present invention;
FIG. 2 is a schematic view showing the opening state of the liquid outlet hole of the sealing plate;
FIG. 3 is a schematic view showing a bottom structure of a mixing chamber;
FIG. 4 is an exploded view showing the construction of a recovery chamber;
FIG. 5 is a sectional view showing the structure of a recovery chamber;
fig. 6 is a schematic view showing the structure of the air guide arc surface and the inclined surface at the position I in fig. 5.
Wherein: 1. a mixing chamber; 11. sealing the cover; 12. a liquid outlet hole; 13. a mixing blade; 14. a support table; 15. a first electromagnet; 16. a metering pump; 2. A recovery chamber; 21. a sealing plate; 211. a flow guide arc surface; 22. a sealing plug; 23. sealing the cylinder; 24. an inner annular wall; 25. an outer annular wall; 26. mounting a plate; 27. a recovery pump; 3. a filter screen; 31. a connecting seat; 311. a slot; 32. a travel switch; 33. a mating rod; 331. a second electromagnet; 34. a filter screen cylinder; 35. a frame; 4. an electric heating block.
Detailed Description
In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "bottom" and "top," "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.
Example 1:
the structure of the production device for tetraalkyl phosphonium salt provided by the embodiment is shown in the figure.
The production apparatus for a tetraalkylphosphonium salt comprises,
the mixing chamber 1 is used for providing a space for mixing mother liquor and additives, the top of the mixing chamber 1 is provided with an opening, the bottom of the mixing chamber 1 is provided with a liquid outlet hole 12, and a mixing blade 13 used for stirring mixed solution is arranged in the mixing chamber 1;
a raw material bin, wherein the mother liquid is stored in the raw material bin, and the raw material is controlled by a metering pump 16 to quantitatively supply the mother liquid to the mixing chamber 1;
at least two additive storage bins which are communicated with the mixing chamber 1 and are respectively used for storing the solid or liquid containing the dialkyl phosphinic acid and/or the alkali metal salt thereof and the solid or liquid containing the metal ion compound, and respectively conveying the solid or liquid containing the dialkyl phosphinic acid and/or the alkali metal salt thereof and the solid or liquid containing the metal ion compound into the mixing chamber 1 in a fixed amount;
a cover 11 closing an opening at the top of the mixing chamber 1;
the filter screen 3 is arranged in the mixing chamber 1 and positioned above the liquid outlet hole 12 and is used for supporting effective precipitates separated out from the mixed solution;
the recovery chamber 2 is communicated with the liquid outlet 12, residual solution discharged from the liquid outlet 12 is collected, the bottom of the recovery chamber 2 is communicated with the recovery pump 27, one end of the recovery pump 27 is communicated with the recovery chamber 2, the other end of the recovery pump 27 is communicated with the mixing chamber 1, mixed liquid filtered by the secondary filter screen in the recovery chamber 2 is controlled by the recovery pump 27 to enter the mixing chamber 1 again for static precipitation, and a cycle is formed.
A sealing plug 22 is arranged in the recovery chamber 2, and the sealing plug 22 is controlled by a driving device to open or close the liquid outlet hole 12.
The sealing plug 22 is arranged on the sealing plate 21, the driving device is a sealing cylinder 23, the output end of the sealing cylinder 23 supports the sealing plate 21, the sealing plate 21 is driven to do intermittent reciprocating motion along the vertical direction, and the liquid outlet hole 12 is opened or closed at the same time.
The recovery chamber 2 comprises an inner annular wall 24 and an outer annular wall 25, an annular accommodating cavity is formed between the inner annular wall 24 and the outer annular wall 25, the top of the accommodating cavity is open, and the edge of the sealing plate 21 is positioned above the opening of the accommodating cavity.
The top of the inner annular wall 24 is lower than the outer annular wall 25 to reserve a space for the sealing plate 21 to ascend and descend.
The edge of the sealing plate 21 is provided with a flow guide arc surface 211, and the flow guide arc surface 211 guides the solution on the sealing plate 21 to flow into the accommodating cavity of the recovery chamber 2.
The bottom of the sealing plate 21 is provided with a groove recessed into the sealing plate 21, and the groove forms an inclined surface on the ground of the sealing plate 21 to prevent the liquid from flowing.
The inner ring wall 24 is provided with a mounting plate 26, and the seal cylinder 23 is arranged on the mounting plate 26.
The liquid outlet holes 12 are distributed on the bottom of the mixing chamber 1.
The sealing plug 22 is driven to be inserted into the liquid outlet hole 12 for sealing by the rising and falling of the sealing plate 21, or to be separated from the liquid outlet hole 12 for opening the liquid outlet hole 12. When the liquid outlet hole 12 is opened, the mixed liquid flows out along the sealing plug 22, and the sealing plug 22 also plays a role in drainage.
The mixed solution is guided by the flow guide arc surface 211 to accurately fall into the annular accommodating cavity of the recovery chamber 2, and the intersection of the inclined surface and the flow guide arc surface 211 forms a tip, so that the mixed solution is prevented from being separated from the opening range of the accommodating cavity.
In addition to the above embodiments, the present invention may have other embodiments; all technical solutions formed by adopting equivalent substitutions or equivalent transformations fall within the protection scope of the claims of the present invention.
Claims (9)
1. A production apparatus for a tetraalkylphosphonium salt comprising: the method comprises the following steps:
the mixing chamber (1) is used for providing a space for mixing mother liquor and additives, an opening is formed in the top of the mixing chamber (1), a liquid outlet hole (12) is formed in the bottom of the mixing chamber (1), and a mixing blade (13) used for stirring mixed solution is arranged in the mixing chamber (1);
a raw material bin, wherein mother liquor is stored in the raw material bin, and the raw material of the mother liquor is controlled to be quantitatively supplied to the mixing chamber (1) by a metering pump (16);
additive storage bins which are communicated with the mixing chamber (1), are at least two and are respectively used for storing the solid or liquid containing the dialkyl phosphinic acid and/or the alkali metal salt thereof and the solid or liquid containing the metal ion compound, and respectively convey the solid or liquid containing the dialkyl phosphinic acid and/or the alkali metal salt thereof and the solid or liquid containing the metal ion compound into the mixing chamber (1) in a fixed amount;
a cover (11) closing the opening at the top of the mixing chamber (1);
the filter screen (3) is arranged in the mixing chamber (1), is positioned above the liquid outlet hole (12) and is used for supporting effective precipitates separated out from the mixed solution;
retrieve room (2), with go out liquid hole (12) intercommunication, collect go out liquid hole (12) discharged residual solution, retrieve room (2) bottom intercommunication recovery pump (27), recovery pump (27) one end intercommunication retrieve room (2), the other end intercommunication mixing chamber (1), pass through in retrieving room (2) the filterable mixed liquid of secondary filter screen is controlled by recovery pump (27) reentrant mixing chamber is static sediment again, forms a circulation.
2. The apparatus for producing a tetraalkylphosphonium salt according to claim 1, characterized in that: a sealing plug (22) is arranged in the recovery chamber (2), and the sealing plug (22) is controlled by a driving device to open or close the liquid outlet hole (12).
3. The apparatus for producing a tetraalkylphosphonium salt according to claim 2, characterized in that: sealing plug (22) are located on closing plate (21), drive arrangement is sealing cylinder (23), sealing cylinder (23)'s output supports closing plate (21), drives closing plate (21) is intermittent type nature reciprocating motion along vertical direction, opens or seals simultaneously go out liquid hole (12).
4. The apparatus for producing a tetraalkylphosphonium salt according to claim 3, characterized in that: the recovery chamber (2) comprises an inner annular wall (24) and an outer annular wall (25), an annular accommodating cavity is formed between the inner annular wall (24) and the outer annular wall (25), the top of the accommodating cavity is open, and the edge of the sealing plate (21) is positioned above the opening of the accommodating cavity.
5. The apparatus for producing a tetraalkylphosphonium salt according to claim 4, characterized in that: the top of the inner ring wall (24) is lower than the outer ring wall (25) so as to reserve a space for the sealing plate (21) to lift.
6. The apparatus for producing a tetraalkylphosphonium salt according to claim 5, characterized in that: the edge of the sealing plate (21) is provided with a flow guide arc surface (211), and the flow guide arc surface (211) guides the solution on the sealing plate (21) to flow into the accommodating cavity of the recovery chamber (2).
7. The apparatus for producing a tetraalkylphosphonium salt according to claim 6, characterized in that: the bottom of the sealing plate (21) is provided with a groove which is sunken into the sealing plate (21), and the groove forms an inclined plane which prevents liquid from flowing on the ground of the sealing plate (21).
8. The apparatus for producing a tetraalkylphosphonium salt according to claim 6, characterized in that: and a mounting plate (26) is arranged on the inner annular wall (24), and the sealing cylinder (23) is arranged on the mounting plate (26).
9. The apparatus for producing a tetraalkylphosphonium salt according to claim 1, characterized in that: the liquid outlet holes (12) are uniformly distributed at the bottom of the mixing chamber (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569560.1A CN112138593A (en) | 2019-06-27 | 2019-06-27 | Production device of tetraalkyl phosphonium salt |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910569560.1A CN112138593A (en) | 2019-06-27 | 2019-06-27 | Production device of tetraalkyl phosphonium salt |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112138593A true CN112138593A (en) | 2020-12-29 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910569560.1A Pending CN112138593A (en) | 2019-06-27 | 2019-06-27 | Production device of tetraalkyl phosphonium salt |
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| Country | Link |
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| CN (1) | CN112138593A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075489A1 (en) * | 2001-09-10 | 2003-04-24 | Gunrunathan Lakshman | Liquid and solid particle separating device |
| CN101352671A (en) * | 2008-09-10 | 2009-01-28 | 中南大学 | Reaction and solid-liquid separation integrated device |
| CN203139985U (en) * | 2013-03-06 | 2013-08-21 | 何科佳 | Buffer solution charging device |
| CN104230986A (en) * | 2014-09-17 | 2014-12-24 | 中国科学院宁波材料技术与工程研究所 | Technology for preparing dialkyl phosphinate |
| CN204647337U (en) * | 2015-04-29 | 2015-09-16 | 常州市龙朝标准件厂 | A kind of electronic long-range throttle valve |
| CN205868201U (en) * | 2016-07-29 | 2017-01-11 | 宁波芬畅凝科香精香料有限公司 | Liquid material dropwise add device that reation kettle used |
| CN206715855U (en) * | 2017-04-21 | 2017-12-08 | 上海蓝木化工有限公司 | A kind of Chemical Manufacture mixing arrangement with dual filtering functions |
| CN107866192A (en) * | 2016-09-23 | 2018-04-03 | 中国科学院上海应用物理研究所 | The retracting device of solid matter |
-
2019
- 2019-06-27 CN CN201910569560.1A patent/CN112138593A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030075489A1 (en) * | 2001-09-10 | 2003-04-24 | Gunrunathan Lakshman | Liquid and solid particle separating device |
| CN101352671A (en) * | 2008-09-10 | 2009-01-28 | 中南大学 | Reaction and solid-liquid separation integrated device |
| CN203139985U (en) * | 2013-03-06 | 2013-08-21 | 何科佳 | Buffer solution charging device |
| CN104230986A (en) * | 2014-09-17 | 2014-12-24 | 中国科学院宁波材料技术与工程研究所 | Technology for preparing dialkyl phosphinate |
| CN204647337U (en) * | 2015-04-29 | 2015-09-16 | 常州市龙朝标准件厂 | A kind of electronic long-range throttle valve |
| CN205868201U (en) * | 2016-07-29 | 2017-01-11 | 宁波芬畅凝科香精香料有限公司 | Liquid material dropwise add device that reation kettle used |
| CN107866192A (en) * | 2016-09-23 | 2018-04-03 | 中国科学院上海应用物理研究所 | The retracting device of solid matter |
| CN206715855U (en) * | 2017-04-21 | 2017-12-08 | 上海蓝木化工有限公司 | A kind of Chemical Manufacture mixing arrangement with dual filtering functions |
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Application publication date: 20201229 |
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