CN114832438A - Dehydration treatment equipment for anhydrous acetonitrile and treatment process thereof - Google Patents
Dehydration treatment equipment for anhydrous acetonitrile and treatment process thereof Download PDFInfo
- Publication number
- CN114832438A CN114832438A CN202210610290.6A CN202210610290A CN114832438A CN 114832438 A CN114832438 A CN 114832438A CN 202210610290 A CN202210610290 A CN 202210610290A CN 114832438 A CN114832438 A CN 114832438A
- Authority
- CN
- China
- Prior art keywords
- dehydration
- tank
- raw material
- distribution
- material tank
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 208000005156 Dehydration Diseases 0.000 title claims abstract description 98
- 230000018044 dehydration Effects 0.000 title claims abstract description 98
- 238000006297 dehydration reaction Methods 0.000 title claims abstract description 98
- WEVYAHXRMPXWCK-UHFFFAOYSA-N Acetonitrile Chemical compound CC#N WEVYAHXRMPXWCK-UHFFFAOYSA-N 0.000 title claims abstract description 96
- 238000000034 method Methods 0.000 title claims abstract description 10
- 230000008569 process Effects 0.000 title claims abstract description 10
- 239000002994 raw material Substances 0.000 claims abstract description 44
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims abstract description 18
- 230000007246 mechanism Effects 0.000 claims abstract description 17
- 239000002808 molecular sieve Substances 0.000 claims abstract description 15
- 238000009826 distribution Methods 0.000 claims description 59
- 239000007788 liquid Substances 0.000 claims description 37
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 31
- 239000002904 solvent Substances 0.000 claims description 26
- 239000007791 liquid phase Substances 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 15
- 230000008676 import Effects 0.000 claims description 6
- 238000005070 sampling Methods 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 4
- 238000011049 filling Methods 0.000 claims description 3
- 229910001873 dinitrogen Inorganic materials 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 8
- 238000001179 sorption measurement Methods 0.000 abstract description 6
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 230000000750 progressive effect Effects 0.000 abstract description 2
- 238000004821 distillation Methods 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 239000012153 distilled water Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002798 polar solvent Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/14—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the introduction of the feed to the apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D15/00—Separating processes involving the treatment of liquids with solid sorbents; Apparatus therefor
- B01D15/08—Selective adsorption, e.g. chromatography
- B01D15/10—Selective adsorption, e.g. chromatography characterised by constructional or operational features
- B01D15/22—Selective adsorption, e.g. chromatography characterised by constructional or operational features relating to the construction of the column
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C253/00—Preparation of carboxylic acid nitriles
- C07C253/32—Separation; Purification; Stabilisation; Use of additives
- C07C253/34—Separation; Purification
-
- 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
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
Landscapes
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Organic Chemistry (AREA)
- Treatment Of Liquids With Adsorbents In General (AREA)
Abstract
The invention discloses dehydration treatment equipment for anhydrous acetonitrile and a treatment process thereof, wherein the dehydration treatment equipment comprises a raw material tank, an air inlet and an air outlet which are respectively arranged at the top end of the raw material tank, a dehydration mechanism connected to the discharge outlet of the raw material tank through a conveying assembly, and a circulating pipe connected to the outlet of the dehydration mechanism, wherein the outlet of the circulating pipe is communicated with the circulating inlet of the raw material tank, and the raw material tank, the conveying assembly, the dehydration mechanism and the circulating pipe form a circulating pipeline for dehydration treatment of acetonitrile; in addition, the dehydration components are arranged in a plurality of groups to form a structural form from initial stage adsorption to deep adsorption, so that a progressive dehydration effect is achieved, and the dehydration reliability is greatly improved; meanwhile, the molecular sieve can be regenerated and recycled, so that the production cost is greatly reduced.
Description
Technical Field
The invention relates to the technical field of anhydrous acetonitrile dehydration treatment, in particular to dehydration treatment equipment for anhydrous acetonitrile and a treatment process thereof.
Background
Anhydrous acetonitrile is an aprotic polar solvent with strong solubility, and can be used as a solvent for spinning, coating, resin and certain organic metals. Dehydration treatment is needed in the separation and extraction preparation process of the anhydrous acetonitrile. Most of the existing acetonitrile dehydration treatment adopts a distillation retort to carry out distillation dehydration, and distilled water formed in the distillation process is repeatedly mixed in the acetonitrile, so that the dehydration effect is poor; meanwhile, the temperature in the distillation tank is not uniformly controlled, so that the temperature is high and low, and the dehydration effect of the acetonitrile is greatly influenced.
Disclosure of Invention
The invention aims to provide dehydration treatment equipment for anhydrous acetonitrile and a treatment process thereof, and aims to solve the problem of poor dehydration effect on acetonitrile in the existing anhydrous acetonitrile preparation process.
The technical scheme for solving the technical problems is as follows: the utility model provides a dehydration equipment for anhydrous acetonitrile, includes the head tank, sets up air inlet and the gas vent on the head tank top respectively, connects the dehydration mechanism and the circulating pipe of connection in the dehydration mechanism exit in the discharge gate department of head tank through conveying component, and the export intercommunication of circulating pipe is in the circulation import department of head tank, and head tank, conveying component, dehydration mechanism and circulating pipe form the circulation pipeline that is used for acetonitrile dehydration.
Further, the dehydration mechanism includes the dehydration jar, sets up the multiunit dehydration subassembly that just communicates in proper order in the dehydration jar, and the dehydration subassembly is arranged along the export direction by the import of dehydration jar intercommunication in proper order, the import department at the dehydration jar is connected to conveying assembly's discharge end, and the exit at the dehydration jar is connected in the import of circulating pipe.
Further, the dehydration subassembly is including setting up the liquid phase distribution subassembly in the dehydration jar and communicating the molecular sieve that sets up in liquid phase distribution subassembly exit, and the liquid phase distribution subassembly of head end dehydration subassembly sets up in the import department of dehydration jar, and the molecular sieve setting of tail end dehydration subassembly is in the inside department of export of dehydration jar.
Further, the liquid phase distribution subassembly includes the distribution dish, set up on the distribution dish and a plurality of bar grooves that set up side by side and set up the distribution post on the bar groove, has the clearance between the adjacent distribution post.
Furthermore, the distribution column comprises a bar-shaped column body which is arranged on the distribution disc and is internally provided with a cavity structure and a plurality of liquid distribution ribs which are positioned on the inner wall of the bar-shaped column body and are arranged at intervals, and the end parts of the liquid distribution ribs extend out of the top surface of the bar-shaped column body and are connected with a liquid distribution baffle;
a liquid discharge cavity is formed between the liquid distribution baffle and the top end of the strip-shaped column body, a liquid distribution cavity is formed between adjacent liquid distribution ribs, and the liquid distribution cavity is communicated with the liquid discharge cavity.
Furthermore, a nitrogen generator is connected to the air inlet at the top end of the raw material tank through a pipeline, and nitrogen generated by the nitrogen generator is used for discharging air in the raw material tank from an air outlet.
Further, a liquid level meter is arranged on the raw material tank.
Further, the conveying assembly comprises a conveying pipe connected between the outlet of the raw material tank and the inlet of the dewatering tank and a conveying pump arranged on the conveying pipe, and the conveying pipe is provided with a sampling port and a control valve.
Further, a control valve and a turbidity remover for preventing the solvent from being turbid are respectively arranged on the circulating pipes.
The invention also provides a dehydration treatment process for the anhydrous acetonitrile, which adopts a dehydration treatment device for treatment and comprises the following steps:
s1: starting a nitrogen generator, filling nitrogen into the raw material tank, continuously discharging air in the raw material tank, then quantitatively injecting raw materials into the raw material tank,
s2: starting a conveying pump, and conveying the raw materials into the dehydration component through a conveying pipe;
s3: then, liquid is distributed in the strip-shaped column body through a liquid phase distribution assembly in the dehydration assembly and is uniformly discharged to the molecular sieve, and the solution reaching the molecular sieve adsorbs moisture in the solvent;
s4: the adsorbed solvent flows back to the raw material tank through a circulating pipe, and S2-S3 are repeated until the solvent detected from the sampling port is in an anhydrous state;
s5: the dehydrated solvent is collected and stored in a concentrated manner, and then S1 to S4 are repeated.
The invention has the following beneficial effects: the dehydration treatment equipment for anhydrous acetonitrile and the treatment process thereof provided by the invention have the advantages of reliable structure and simple process, and realize reliable dehydration effect in a circulating dehydration system of nitrogen with certain purity, so that the dehydration effect is good; in addition, the dehydration components are arranged in a plurality of groups to form a structural form from initial stage adsorption to deep adsorption, so that a progressive dehydration effect is achieved, and the dehydration reliability is greatly improved; meanwhile, the molecular sieve can be regenerated and recycled, so that the production cost is greatly reduced.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a liquid phase distribution assembly according to the present invention;
FIG. 3 is a side sectional view of the strip cylinder of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in figure 1, the dehydration treatment equipment for anhydrous acetonitrile comprises a raw material tank 1, an air inlet 2 and an air outlet 3 which are respectively arranged at the top end of the raw material tank 1, a dehydration mechanism 5 connected to the discharge outlet of the raw material tank 1 through a conveying component 4, and a circulating pipe 6 connected to the outlet of the dehydration mechanism 5, wherein the outlet of the circulating pipe 6 is communicated with the circulation inlet of the raw material tank 1, and the raw material tank 1, the conveying component 4, the dehydration mechanism 5 and the circulating pipe 6 form a circulating pipeline for acetonitrile dehydration treatment. The air inlet 2 is connected with a nitrogen generator through a pipeline, nitrogen generated by the nitrogen generator is used for discharging air in the raw material tank 1 from the exhaust port 3, the purity of the air in the raw material tank 1 is improved, and the influence of the air on the preparation of a solvent is avoided. After quantitative solvent is injected into the raw material tank 1 through the feed inlet, the solvent is conveyed into the dehydration mechanism 5 through the conveying assembly 4, the moisture of the solvent is fully adsorbed under the adsorption action of the dehydration mechanism 5, the solvent after adsorption is returned into the raw material tank 1 through the circulating pipe 6 to form cyclic dehydration, and after the solvent with the amount is dehydrated, the solvent is collected in a centralized manner, and then the dehydration operation of the next injection amount is performed.
As shown in fig. 1, the dewatering mechanism 5 includes a dewatering tank 50, and a plurality of sets of dewatering assemblies 51 disposed in the dewatering tank 50 and sequentially connected, and the dewatering assemblies 51 are sequentially connected and arranged along the outlet direction from the inlet of the dewatering tank 50, the discharge end of the conveying assembly 4 is connected to the inlet of the dewatering tank 50, and the inlet of the circulating pipe 6 is connected to the outlet of the dewatering tank 50. Through multiunit dehydration subassembly 51, form by the initial stage absorption to the adsorbed structural style of degree of depth, reach the dehydration effect of step-advancing formula, improve the reliability of dehydration greatly.
As shown in fig. 2 to 3, the dewatering module 51 includes a liquid phase distribution module 510 disposed in the dewatering tank 50 and a molecular sieve 511 communicatively disposed at an outlet of the liquid phase distribution module 510, the liquid phase distribution module 510 of the head-end dewatering module 51 is disposed at an inlet of the dewatering tank 50, and the molecular sieve 511 of the tail-end dewatering module 51 is disposed at an inside of the outlet of the dewatering tank 50. The molecular sieve 511 can be regenerated and recycled, so that the production cost is greatly reduced. The liquid phase distribution assembly 510 is connected with a quick-assembly connector, so that the disassembly and the assembly are convenient.
The liquid phase distribution assembly 510 includes a distribution disc 512, a plurality of strip-shaped grooves provided on the distribution disc 512 and arranged in parallel, and distribution pillars 513 provided on the strip-shaped grooves, wherein a gap is provided between adjacent distribution pillars 513. The distribution column 513 comprises a bar-shaped column body 514 which is arranged on the distribution disc 512 and has a hollow cavity structure inside, and a plurality of liquid distribution ribs 515 which are positioned on the inner wall of the bar-shaped column body 514 and are arranged at intervals, wherein the end parts of the liquid distribution ribs 515 extend out of the top surface of the bar-shaped column body 514 and are connected with liquid distribution baffles 516; a liquid discharge cavity 517 is formed between the liquid distribution baffle 516 and the top end of the strip-shaped column body 514, a liquid distribution cavity 518 is formed between adjacent liquid distribution ribs 515, and the liquid distribution cavity 518 is communicated with the liquid discharge cavity 517. The solvent flows into the distribution column 513 through the strip-shaped groove, the liquid is uniformly distributed under the action of the liquid distribution ribs 515 in the strip-shaped column body 514, and then the solvent is concentrated in the plurality of liquid distribution cavities 518 and is uniformly discharged along with the liquid discharge cavity 517.
In order to accurately measure the solvent in the raw material tank 1, the raw material tank 1 is provided with a liquid level meter 10. The reading end of the liquid level meter 10 is positioned outside the raw material tank 1, so that the staff can observe in real time conveniently, and the use performance is improved.
The conveying assembly 4 comprises a feeding pipe 40 connected between the outlet of the raw material tank 1 and the inlet of the dewatering tank 50 and a conveying pump 41 arranged on the feeding pipe 40, and a sampling port 42 and a control valve 43 are respectively arranged on the feeding pipe 40. The circulation pipe 6 is provided with a control valve 43 and a turbidity remover 44 for preventing turbidity of the solvent, respectively.
The invention also provides a dehydration treatment process for the anhydrous acetonitrile, which adopts a dehydration treatment device for treatment and comprises the following steps:
s1: starting a nitrogen generator, filling nitrogen into the raw material tank 1, continuously discharging air in the raw material tank 1, then injecting raw materials into the raw material tank 1 at a fixed amount,
s2: starting the conveying pump 41, and conveying the raw materials into the dehydration component 51 through the feeding pipe 40;
s3: then, the liquid is distributed in the strip-shaped cylinder 514 through the liquid phase distribution component 510 in the dehydration component 51 and is uniformly discharged to the molecular sieve 511, and the solution reaching the molecular sieve 511 absorbs the moisture in the solvent;
s4: the adsorbed solvent is returned to the raw material tank 1 through the circulation pipe 6, and S2 to S3 are repeated until the solvent detected from the sampling port 42 is in an anhydrous state;
s5: the dehydrated solvent is collected and stored in a concentrated manner, and then S1 to S4 are repeated.
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent replacements, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a dehydration equipment for anhydrous acetonitrile, its characterized in that includes head tank (1), sets up respectively air inlet (2) and gas vent (3) on head tank (1) top, connect through transport component (4) dehydration mechanism (5) and connection in the discharge gate department of head tank (1) are in circulation pipe (6) in dehydration mechanism (5) exit, the export intercommunication of circulation pipe (6) is in the circulation import department of head tank (1), transport component (4), dehydration mechanism (5) and circulation pipe (6) form the circulation pipeline that is used for acetonitrile dehydration.
2. The dehydration treatment apparatus for anhydrous acetonitrile according to claim 1, wherein the dehydration mechanism (5) comprises a dehydration tank (50), multiple groups of dehydration components (51) disposed in the dehydration tank (50) and sequentially communicated, and the dehydration components (51) are sequentially communicated and arranged along an outlet direction from an inlet of the dehydration tank (50), a discharge end of the conveying component (4) is connected to the inlet of the dehydration tank (50), and an inlet of the circulating pipe (6) is connected to an outlet of the dehydration tank (50).
3. The dehydration treatment apparatus for anhydrous acetonitrile according to claim 2, wherein said dehydration module (51) comprises a liquid phase distribution module (510) disposed inside said dehydration tank (50) and a molecular sieve (511) communicatively disposed at an outlet of said liquid phase distribution module (510), the liquid phase distribution module (510) of the head end of said dehydration module (51) being disposed at an inlet of said dehydration tank (50), the molecular sieve (511) of the tail end of said dehydration module (51) being disposed at an inside of an outlet of said dehydration tank (50).
4. The dehydration treatment apparatus for anhydrous acetonitrile according to claim 3, wherein said liquid phase distribution assembly (510) comprises a distribution disk (512), a plurality of strip-shaped grooves which are opened on said distribution disk (512) and are arranged in parallel, and distribution columns (513) which are arranged on said strip-shaped grooves, wherein a gap is provided between adjacent distribution columns (513).
5. The dehydration treatment equipment for anhydrous acetonitrile according to claim 4, wherein the distribution column (513) comprises a bar-shaped cylinder (514) which is arranged on the distribution disc (512) and has a hollow structure inside, and a plurality of liquid distribution ribs (515) which are arranged at intervals on the inner wall of the bar-shaped cylinder (514), wherein the ends of the liquid distribution ribs (515) extend out of the top surface of the bar-shaped cylinder (514) and are connected with liquid distribution baffles (516);
a liquid discharge cavity (517) is formed between the liquid distribution baffle (516) and the top end of the strip-shaped column body (514), a liquid distribution cavity (518) is formed between the adjacent liquid distribution ribs (515), and the liquid distribution cavity (518) is communicated with the liquid discharge cavity (517).
6. The dehydration treatment apparatus for anhydrous acetonitrile according to claim 1, wherein a nitrogen generator is connected to the gas inlet (2) at the top end of the raw material tank (1) through a pipe, and nitrogen gas is generated by the nitrogen generator to discharge the air in the raw material tank (1) from the gas outlet (3).
7. The dehydration treatment apparatus for anhydrous acetonitrile according to claim 1, wherein a level gauge (10) is provided on said raw material tank (1).
8. The dehydration treatment apparatus for anhydrous acetonitrile according to claim 2, wherein the conveying assembly (4) comprises a feeding pipe (40) connected between the outlet of the raw material tank (1) and the inlet of the dehydration tank (50), and a conveying pump (41) arranged on the feeding pipe (40), and the feeding pipe (40) is provided with a sampling port (42) and a control valve (43).
9. The dehydration treatment apparatus for anhydrous acetonitrile according to claim 1, wherein said circulating pipe (6) is provided with a control valve (43) and a turbidity remover (44) for preventing turbidity of the solvent, respectively.
10. A dehydration treatment process for anhydrous acetonitrile, characterized by using the dehydration treatment apparatus according to any one of claims 1 to 9 for treatment, comprising the steps of:
s1: starting a nitrogen generator, filling nitrogen into the raw material tank (1), continuously discharging air in the raw material tank (1), and then quantitatively injecting raw materials into the raw material tank (1);
s2: starting a conveying pump (41) and conveying the raw materials into a dehydration assembly (51) through a feeding pipe (40);
s3: then, the liquid is distributed in the strip-shaped cylinder (514) through a liquid phase distribution assembly (510) in the dehydration assembly (51) and is uniformly discharged to the molecular sieve (511), and the solution reaching the molecular sieve (511) adsorbs the moisture in the solvent;
s4: the adsorbed solvent is refluxed into the raw material tank (1) through a circulating pipe (6), and S2 to S3 are repeated until the solvent detected from the sampling port (42) is in an anhydrous state;
s5: the dehydrated solvent is collected and stored in a concentrated manner, and then S1 to S4 are repeated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210610290.6A CN114832438B (en) | 2022-05-31 | Dehydration treatment equipment and dehydration treatment process for anhydrous acetonitrile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210610290.6A CN114832438B (en) | 2022-05-31 | Dehydration treatment equipment and dehydration treatment process for anhydrous acetonitrile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114832438A true CN114832438A (en) | 2022-08-02 |
| CN114832438B CN114832438B (en) | 2024-07-16 |
Family
ID=
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2540397Y (en) * | 2002-05-21 | 2003-03-19 | 山东省化工规划设计院 | Hydrogen nitrate concentration tower sparger |
| CN2574754Y (en) * | 2002-10-25 | 2003-09-24 | 天津天大天久科技股份有限公司 | Composite funnel cyclone sand precipitating device |
| RU2429452C1 (en) * | 2009-12-28 | 2011-09-20 | Федеральное государственное унитарное предприятие Всероссийский научно-исследовательский институт расходометрии (ФГУП ВНИИР) | Constant-level pressure tank |
| JP2012081412A (en) * | 2010-10-12 | 2012-04-26 | Toyobo Co Ltd | Solvent dehydrator |
| CN204933481U (en) * | 2015-08-21 | 2016-01-06 | 天津科林泰克科技有限公司 | A kind of band is from the liquid distribution trough of distributed architecture |
| US20180140966A1 (en) * | 2016-11-22 | 2018-05-24 | IFP Energies Nouvelles | Exchange column distributor tray comprising a dispersive material within a chimney for gas passage |
| CN207430247U (en) * | 2017-10-17 | 2018-06-01 | 杭州富如德科技有限公司 | A kind of water filling distributor for preventing ammonium salt crystallization deposition underdeposit corrosion |
| CN207545870U (en) * | 2017-07-18 | 2018-06-29 | 南通百川新材料有限公司 | A kind of liquid distribution trough for trimellitic anhydride rectifying |
| CN210103865U (en) * | 2019-05-14 | 2020-02-21 | 天津市赫瑞森燃气设备有限公司 | Dehydration sled |
| CN213668031U (en) * | 2020-11-05 | 2021-07-13 | 福建博鸿新能源科技有限公司 | Novel molecular sieve adsorbs dehydration device |
| CN217340166U (en) * | 2022-05-31 | 2022-09-02 | 成都格莱高科技有限公司 | A dehydration equipment for anhydrous acetonitrile |
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2540397Y (en) * | 2002-05-21 | 2003-03-19 | 山东省化工规划设计院 | Hydrogen nitrate concentration tower sparger |
| CN2574754Y (en) * | 2002-10-25 | 2003-09-24 | 天津天大天久科技股份有限公司 | Composite funnel cyclone sand precipitating device |
| RU2429452C1 (en) * | 2009-12-28 | 2011-09-20 | Федеральное государственное унитарное предприятие Всероссийский научно-исследовательский институт расходометрии (ФГУП ВНИИР) | Constant-level pressure tank |
| JP2012081412A (en) * | 2010-10-12 | 2012-04-26 | Toyobo Co Ltd | Solvent dehydrator |
| CN204933481U (en) * | 2015-08-21 | 2016-01-06 | 天津科林泰克科技有限公司 | A kind of band is from the liquid distribution trough of distributed architecture |
| US20180140966A1 (en) * | 2016-11-22 | 2018-05-24 | IFP Energies Nouvelles | Exchange column distributor tray comprising a dispersive material within a chimney for gas passage |
| CN207545870U (en) * | 2017-07-18 | 2018-06-29 | 南通百川新材料有限公司 | A kind of liquid distribution trough for trimellitic anhydride rectifying |
| CN207430247U (en) * | 2017-10-17 | 2018-06-01 | 杭州富如德科技有限公司 | A kind of water filling distributor for preventing ammonium salt crystallization deposition underdeposit corrosion |
| CN210103865U (en) * | 2019-05-14 | 2020-02-21 | 天津市赫瑞森燃气设备有限公司 | Dehydration sled |
| CN213668031U (en) * | 2020-11-05 | 2021-07-13 | 福建博鸿新能源科技有限公司 | Novel molecular sieve adsorbs dehydration device |
| CN217340166U (en) * | 2022-05-31 | 2022-09-02 | 成都格莱高科技有限公司 | A dehydration equipment for anhydrous acetonitrile |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| BR102019013159A2 (en) | lignocellulosic biomass treatment process | |
| CN217340166U (en) | A dehydration equipment for anhydrous acetonitrile | |
| CN114832438A (en) | Dehydration treatment equipment for anhydrous acetonitrile and treatment process thereof | |
| CN106669867A (en) | Continuous and automatic ion exchange device | |
| CN104761538A (en) | Method for extracting nicotine through steam distillation and acid absorption | |
| CN102051329A (en) | Biomass ferment-separation coupling device and method for preparing ethanol | |
| CN114832438B (en) | Dehydration treatment equipment and dehydration treatment process for anhydrous acetonitrile | |
| CN106731494A (en) | The process of desorption air lift coupled and pressurizing absorption purification biogas | |
| CN102173991A (en) | Continuous alcohol-removing device and alcohol-removing method of di-sec-octyl phthalate | |
| CN102120628B (en) | Hydronic-heating flash distillation process high-efficiency ammonia distillation tower | |
| CN204767471U (en) | With high -temperature gas concentrate system all | |
| CN202322584U (en) | Hydrothermal flash evaporation device capable of realizing afterheat recovery | |
| CN205420247U (en) | Device is carried to chinese yam saponin mellow wine against current | |
| CN105439994A (en) | Method for preparing furfural from corncobs through microwave assisted SnCl4 catalysis | |
| CN210855286U (en) | Equipment for continuously rinsing chemically activated carbon | |
| CN203569056U (en) | Device for eliminating naphthalene from coke oven gas with washing oil | |
| CN103060085A (en) | Total-immersion continuous differential countercurrent extractor | |
| CN101054177B (en) | Method and system for producing high concentration carbon dioxide of carbon-13 | |
| CN205965108U (en) | A device that is arranged in thick alcohol ketone material sodium salt desorption | |
| CN206916146U (en) | Dry and wet combines integral anaerobic installation for fermenting | |
| CN216457024U (en) | Tower type countercurrent leaching device for instant tea | |
| CN105566078A (en) | Gas phase coupling method for preparing polyoxymethylene dimethyl ethers DMM3-5 | |
| CN104355345A (en) | Negative-pressure ammonia distillation tower and ammonia distillation method | |
| CN206492247U (en) | A kind of automatic dress post continuous operation series connection macroporous resin adsorption separator | |
| CN204752561U (en) | Recovery unit of acetylene in vinyl acetate production process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant |