CN204065036U - A kind of pretreating device of TDI product - Google Patents
A kind of pretreating device of TDI product Download PDFInfo
- Publication number
- CN204065036U CN204065036U CN201420508485.0U CN201420508485U CN204065036U CN 204065036 U CN204065036 U CN 204065036U CN 201420508485 U CN201420508485 U CN 201420508485U CN 204065036 U CN204065036 U CN 204065036U
- Authority
- CN
- China
- Prior art keywords
- way valve
- pipe adapter
- tdi
- tdi product
- pipe
- 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.)
- Active
Links
Landscapes
- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a kind of pretreating device of TDI product, comprise filtration unit, comprise Filter column and filtering membrane interconnective with described Filter column, in described Filter column, be provided with the packing layer filtering interfering material; Proportioning device, comprise the first six-way valve connected with described filtering membrane, second six-way valve, connect the first quantitative loop of described first six-way valve and described second six-way valve, connect the liquid storage pipe of described first six-way valve two pipe adapter, connect the second quantitative loop of described second six-way valve two pipe adapter and connect the thinning agent sampling device of described second six-way valve; Mixer, described mixer is connected with described second six-way valve, and is also provided with T-valve between itself and described second six-way valve; And the aerating device to be connected with described first six-way valve.The pretreating device of TDI product of the present utility model, can realize the filtration of interfering material in TDI product, the quantitative dilution of TDI product and sample introduction simultaneously, the danger that when avoiding manual operation, direct product of contact is brought.
Description
Technical field
The utility model relates to a kind of pretreating device, is specifically related to a kind of pretreating device for TDI product.
Background technology
Organic compound containing isocyanate groups (-NCO) in molecular structure is referred to as organic isocyanate, the overwhelming majority of organic isocyanate output is used in the commercial production of polyurethane, is also the important organic intermediate of the industry such as agricultural chemicals, dyestuff, leather polish.And toluene diisocyanate (be called for short TDI) because of its excellence performance and widely purposes become in isocyanate compound and can apply one of maximum kind, be mainly used in making various soft with rigid foam, urethane rubber, polyurethane coating, leatheret, tackifier, fiber etc. with the polyurethane material that it is made.
Along with the widespread use that toluene diisocyanate (TDI) is applied, the output of TDI also gets more and more, and the phosgenation of traditional production TDI is difficult to the shortcomings such as removal and applies limited due to raw materials technology phosgene severe toxicity, by-product hydrochloric acid etching apparatus and product residual chlorine.At present, non-phosgene has become the focus that domestic and international researcher pays close attention to, and wherein, with first synthesis of carbamates intermediate, and then the method that thermal cracking obtains corresponding isocyanates attracts most attention.The synthetic method of carbamate mainly comprises nitro compound reducing carbonyl method, amine oxidation carbonylation method, carbonic acid ester process and urea method, catalyzer all can be used with the synthesis of catalytic reaction in said method, thus make to there is impurity in the TDI product of generation, TDI comprises 2 in addition, 4-toluene diisocyanate and 2, the potpourri of 6-toluene diisocyanate, the TDI product therefore synthesized needs to carry out stratographic analysis to detect the content of two kinds of structures.As mentioned above, existence due to interfering material makes must isolate in follow-up stratographic analysis to detecting the catalyzer producing interference, such as, in the technique of urea method synthesis TDI, conventional catalyzer is heterogeneous catalysis and homogeneous catalyst, heterogeneous catalysis can block liquid phase chromatotube road, the heavy metal ion of homogeneous catalyst affects liquid-phase chromatographic column effect, enters liquid-phase chromatographic column in a large number, may cause liquid-phase chromatographic column inactivation.Traditional laboratory method needs manually to be separated the TDI of urea method synthesis, then analyze by gas chromatography or liquid chromatography, inevitably directly TDI and other organic solvents is contacted in operating process, TDI has strong impulse smell, stimulation damaging action is had to skin, eyes and respiratory tract, in Occupational contact poison Harm level classification standard, TDI is listed in the chemical substance highly endangering level, when being manually separated in a conventional manner, bring serious danger to the health of staff.Therefore set up between TDI synthetic product with chromatogram column analysis to be a kind ofly separated, pretreating device that quantitatively dilution, sample introduction are integrated has great importance.
Chinese patent literature CN102323433A discloses a kind of reagent precise quantitative sample-injection method and system, and the method for reagent accurate quantification sample introduction comprises the following steps (1) and quantitatively extracts, (2) tube emptying, (3) sample introduction.This system comprises control module, pump, reagent liquid feed valve group, six-way valve and functional switch, but said system can only realize the object of accurate sample introduction, its test agent has been formulated in feed liquor bottle in advance, it cannot realize the object be separated TDI product, and TDI also will dilute when entering look post liquid and analyzing, as adopt said apparatus its be separated, dilution process still need manually to complete, still there is the risk of human contact TDI in it.
Utility model content
Need artificial separation when carrying out stratographic analysis thus the problem health of operating personnel being brought to grave danger for solving TDI product in prior art, thus a kind of pretreating device of TDI product is provided.
For this reason, the technical scheme that the application takes is,
A pretreating device for TDI product, comprises,
Filtration unit, comprises Filter column and filtering membrane interconnective with described Filter column, is provided with the packing layer filtering interfering material in described Filter column;
Proportioning device, comprise the first six-way valve connected with described filtering membrane, second six-way valve, connect the first quantitative loop of described first six-way valve and described second six-way valve, connect the liquid storage pipe of described first six-way valve two pipe adapter, connect the second quantitative loop of described second six-way valve two pipe adapter and connect the thinning agent sampling device of described second six-way valve;
Mixer, described mixer is connected with described second six-way valve, and is also provided with T-valve between described mixer and described second six-way valve; With,
Aerating device, described aerating device is connected with described first six-way valve.
In the pretreating device of above-mentioned TDI product, described packing layer comprises the inert filler layer, layer of silica gel and the sieve plate that arrange according to liquid flow direction.
In the pretreating device of above-mentioned TDI product, described filtering membrane is organic filter membrane.
In the pretreating device of above-mentioned TDI product, described filtering membrane is connected with first pipe adapter of described first six-way valve by described first six-way valve, described liquid storage pipe connects the 5th pipe adapter and the 6th pipe adapter of described first six-way valve, and described aerating device connects the 3rd pipe adapter of described first six-way valve;
Described first quantitative loop connects the 4th pipe adapter of described first six-way valve and the 3rd pipe adapter of described second six-way valve respectively;
Described second quantitative loop connects the 5th pipe adapter and the 6th pipe adapter of described second six-way valve, and the second pipe adapter of described second six-way valve connects described thinning agent sampling device, and the 4th pipe adapter of described second six-way valve connects described T-valve.
In the pretreating device of above-mentioned TDI product, the second pipe adapter of described first six-way valve and the first pipe adapter of described second six-way valve are in emptying state.
In the pretreating device of above-mentioned TDI product, in described mixer, be provided with the rifle bar promoting described TDI product and described mixing diluents.
In the pretreating device of above-mentioned TDI product, described liquid storage pipe is the stainless-steel tube that volume is not less than described first quantitative loop.
In the pretreating device of above-mentioned TDI product, described rifle bar is metal or corrosion-resistant rifle bar.
In the pretreating device of above-mentioned TDI product, the liquid outlet of described mixer is connected with the import of TDI product analysis device.
In the pretreating device of above-mentioned TDI product, be connected by the metal tube or corrosion-resistant pipe being welded with pintle between described filtering membrane with the first pipe adapter of described first six-way valve.
Compared with prior art, the application's tool has the following advantages,
(1) pretreating device of TDI product of the present utility model, can realize the filtration of interfering material in TDI product, the quantitative dilution of TDI product and sample introduction simultaneously, the danger that when avoiding manual operation, direct product of contact is brought.
(2) in the pretreating device of TDI product of the present utility model, be provided with in Filter column inert filler layer, layer of silica gel with sieve plate thus realize being separated at interfering material, wherein inert filler can realize the filtration to heterogeneous catalysis in product, layer of silica gel can realize metal biosorption in homogeneous catalyst, and sieve plate and organic filter membrane realize filtering further other impurity in TDI product.
(3) in the pretreating device of TDI product of the present utility model, the rifle bar promoting described TDI product and described mixing diluents is provided with in described mixer, described liquid storage pipe is the stainless-steel tube that volume is not less than described first quantitative loop, thus the accurate quantification realized TDI product, be connected by metal tube or corrosion-resistant pipe between described filtering membrane with the first pipe adapter of described first six-way valve, described metal tube or corrosion-resistant pipe weld pintle and realize itself and filtering membrane or being tightly connected of six-way valve pipe adapter thus leaking outside of the TDI product avoided.
Accompanying drawing explanation
In order to make content of the present utility model be more likely to be clearly understood, below according to specific embodiment of the utility model also by reference to the accompanying drawings, the utility model is described in further detail, wherein
The structural representation of the pretreating device of Fig. 1 the utility model TDI product;
The quantitative collection TDI product of the pretreating device of Fig. 2 TDI product and the schematic diagram of thinning agent;
The sample introduction schematic diagram of the pretreating device of Fig. 3 TDI product;
Fig. 4 adopts the utility model to carry out to TDI product the HPLC analysis chart that pre-treatment obtains.
Wherein, Reference numeral is expressed as,
100-Filter column; 101-inert filler layer; 102-layer of silica gel; 103-sieve plate; 200-filtering membrane; 301-first six-way valve; 302-second six-way valve; 400-liquid storage pipe; 501-first quantitative loop; 502-second quantitative loop; 600-T-valve; 700-mixer, 800-thinning agent sampling device; 900-aerating device; 1-1-first six-way valve first pipe adapter; 1-2-first six-way valve second pipe adapter; 1-3-first six-way valve the 3rd pipe adapter; 1-4-first six-way valve the 4th pipe adapter 1-5-first six-way valve the 5th pipe adapter; 1-6-first six-way valve the 6th pipe adapter; 2-1-second six-way valve first pipe adapter; 2-2-second six-way valve second pipe adapter; 2-3-second six-way valve the 3rd pipe adapter; 2-4-second six-way valve the 4th pipe adapter; 2-5-second six-way valve the 5th pipe adapter; 2-6-second six-way valve the 6th pipe adapter; 6-1-T-valve drain; 6-2 T-valve liquid outlet.
Embodiment
As shown in Figure 1, for the structural representation of the pretreating device of a kind of TDI product of the present utility model, it comprises, filtration unit, comprise Filter column 100 and filtering membrane 200 interconnective with described Filter column, in described Filter column 100, be provided with the packing layer filtering interfering material; Proportioning device, comprise the first six-way valve 301 connected with described filtering membrane 200, second six-way valve 302, connect the first quantitative loop 501 of described first six-way valve 301 and described second six-way valve 302, connect the liquid storage pipe 400 of described first six-way valve 501 liang of pipe adapters, connect the second quantitative loop 502 of described second six-way valve 302 liang of pipe adapters and connect the thinning agent sampling device 800 of described second six-way valve 302; Mixer 700, described mixer 700 is connected with described second six-way valve 302, and is also provided with T-valve 600 between described mixer 700 and described second six-way valve 302; And the aerating device 900 to be connected with described first six-way valve 301.
On the basis of above-mentioned embodiment, described packing layer comprises the inert filler layer 101, layer of silica gel 102 and the sieve plate 103 that arrange according to liquid flow direction, layer of silica gel 102 described in the present embodiment is made up of silica gel particle, can also be the layer of silica gel of other form in other embodiments.
On the basis of above-mentioned embodiment, described filtering membrane 200 is organic filter membrane.
On the basis of above-mentioned embodiment, described filtering membrane 200 is connected by the first six-way valve first pipe adapter 1-1 with described first six-way valve 301, described liquid storage pipe 400 connects the first six-way valve the 5th pipe adapter 1-5 and the first six-way valve the 6th pipe adapter 1-6 of described first six-way valve, and described aerating device connects the first six-way valve the 3rd pipe adapter 1-3; Described first quantitative loop 501 connects the first six-way valve the 4th pipe adapter 1-4 and the second six-way valve the 3rd pipe adapter 2-3 respectively; Described second quantitative loop 502 connects described second six-way valve the 5th pipe adapter 2-5 and the second six-way valve the 6th pipe adapter 2-6, and the second six-way valve second pipe adapter 2-2 connects described thinning agent sampling device, and the second six-way valve the 4th pipe adapter 2-4 connects described T-valve.
On the basis of above-mentioned embodiment, the first six-way valve second pipe adapter 1-2 and the second six-way valve first pipe adapter 2-1 is in emptying state.
On the basis of above-mentioned embodiment, the rifle bar promoting described TDI product and described mixing diluents is provided with in described mixer 700, rifle bar described in present embodiment is metal spiral rod, and it can be the corrosion-resistant rifle bar formed by other resistant material in other embodiments.
On the basis of above-mentioned embodiment, the stainless-steel tube of described liquid storage pipe 400 described first quantitative loop 501 for volume is not less than, to ensure accuracy when adopting described first quantitative loop quantitative.
On the basis of above-mentioned embodiment, the liquid outlet of described mixer 700 is connected with the import of TDI product analysis device.
On the basis of above-mentioned embodiment, be connected by the metal tube or corrosion-resistant pipe being welded with pintle between described filtering membrane 200 with described first six-way valve first pipe adapter 1-1.
The pretreating device of the TDI product of the application is adopted to carry out the overanxious of TDI product, in the course of work of quantitative dilution and sample introduction, first the state of device as shown in Figure 1, first six-way valve the 3rd pipe adapter 1-3 and the first six-way valve the 4th pipe adapter 1-4 of the first six-way valve 301 are in connected state, first six-way valve first pipe adapter 1-1 and the first six-way valve the 5th pipe adapter 1-5 is in connected state, first six-way valve second pipe adapter 1-2 and the first six-way valve the 6th pipe adapter 1-6 is in connected state, T-valve liquid outlet 6-2 is communicated with mixer 700, first pass through aerating device 900 by the pipeline of inert gas access equipment, air in emptying pipeline, avoid it to the interference of detection material, the TDI product that the simultaneous reactions of logical inert gas generates accesses in Filter column 100, the filtration of interfering material in TDI product is realized by packing layer, and by after organic filter membrane 200, by TDI product to be detected by the first six-way valve first pipe adapter 1-1, be stored in liquid storage pipe 400, surplus liquid is emptying by the first six-way valve second pipe adapter 1-2, treat that logical inert gas and liquid storage process complete, close aerating device.
Rotate the first six-way valve 301, as shown in Fig. 2, make the first six-way valve first pipe adapter 1-1 be communicated with the first six-way valve second pipe adapter 1-2, first six-way valve the 3rd pipe adapter 1-3 is communicated with the first six-way valve the 5th pipe adapter 1-5, after first six-way valve the 4th pipe adapter 1-4 is communicated with the first six-way valve the 6th pipe adapter 1-6, open aerating device, rotate T-valve makes T-valve liquid outlet 6-2 close T-valve drain 6-1 unlatching simultaneously, now, under the promotion of inert gas, TDI product to be measured in liquid storage pipe 400 is pushed in the first quantitative loop 501, unnecessary liquid is emptying by T-valve drain 6-1, again close aerating device and the liquid outlet 6-2 of T-valve is communicated with mixer 700, close T-valve drain 6-1, after said process completes, thinning agent is pumped into the second six-way valve second pipe adapter 2-2 of the second six-way valve by thinning agent sampling device 800, and be stored in the second quantitative loop 502, surplus liquid is emptying by the second six-way valve first pipe adapter 2-1.
Then the second six-way valve 302 is rotated, as shown in Figure 3, second six-way valve first pipe adapter 2-1 is communicated with the second six-way valve second pipe adapter 2-2, second six-way valve the 3rd pipe adapter 2-3 is communicated with the second six-way valve the 5th pipe adapter 2-5, second six-way valve the 4th pipe adapter 2-4 is communicated with the second six-way valve the 6th pipe adapter 2-6, finally open aerating device 900, under the promotion of inert gas, TDI product to be measured in first quantitative loop 501 and the thinning agent in the second quantitative loop 502 are entered in mixer 700 by T-valve 600 and realize mixing, further under the promotion of gas, mixed liquor enters analytical equipment by the liquid outlet of mixer 700, realize the detection to TDI product, the TDI product adopting said apparatus to utilize high performance liquid chromatography (HPLC) in Fig. 4 to analyze, it obviously can see 2, 4-toluene diisocyanate and 2, the peak of 6-toluene diisocyanate, peak shape is stablized, and there is no the interference of impurity peaks, show that this device can be used for analyzing TDI product.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (10)
1. a pretreating device for TDI product, is characterized in that, comprises,
Filtration unit, comprises Filter column and filtering membrane interconnective with described Filter column, is provided with the packing layer filtering interfering material in described Filter column;
Proportioning device, comprise the first six-way valve connected with described filtering membrane, second six-way valve, connect the first quantitative loop of described first six-way valve and described second six-way valve, connect the liquid storage pipe of described first six-way valve two pipe adapter, connect the second quantitative loop of described second six-way valve two pipe adapter and connect the thinning agent sampling device of described second six-way valve;
Mixer, described mixer is connected with described second six-way valve, and is also provided with T-valve between described mixer and described second six-way valve; With,
Aerating device, described aerating device is connected with described first six-way valve.
2. the pretreating device of TDI product according to claim 1, is characterized in that, described packing layer comprises the inert filler layer, layer of silica gel and the sieve plate that arrange according to liquid flow direction.
3. the pretreating device of TDI product according to claim 1 and 2, is characterized in that, described filtering membrane is organic filter membrane.
4. the pretreating device of TDI product according to claim 3, is characterized in that,
Described filtering membrane is connected with first pipe adapter of described first six-way valve by described first six-way valve, described liquid storage pipe connects the 5th pipe adapter of described first six-way valve and the 6th pipe adapter of the first six-way valve, and described aerating device connects the 3rd pipe adapter of described first six-way valve;
Described first quantitative loop connects the 4th pipe adapter of described first six-way valve and the 3rd pipe adapter of described second six-way valve respectively;
Described second quantitative loop connects the 5th pipe adapter of described second six-way valve and the 6th pipe adapter of the second six-way valve, second pipe adapter of described second six-way valve connects described thinning agent sampling device, and the 4th pipe adapter of described second six-way valve connects described T-valve.
5. the pretreating device of TDI product according to claim 4, is characterized in that, the second pipe adapter of described first six-way valve and the first pipe adapter of described second six-way valve are in emptying state.
6. the pretreating device of the TDI product according to claim 4 or 5, is characterized in that,
The rifle bar promoting described TDI product and described mixing diluents is provided with in described mixer.
7. the pretreating device of TDI product according to claim 6, is characterized in that, described liquid storage pipe is the stainless-steel tube that volume is not less than described first quantitative loop.
8. the pretreating device of TDI product according to claim 7, is characterized in that, described rifle bar is metal or corrosion-resistant rifle bar.
9. the pretreating device of the TDI product according to claim 7 or 8, is characterized in that, the liquid outlet of described mixer is connected with the import of TDI product analysis device.
10. the pretreating device of TDI product according to claim 9, is characterized in that, is connected between described filtering membrane with the first pipe adapter of described first six-way valve by the metal tube or corrosion-resistant pipe being welded with pintle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508485.0U CN204065036U (en) | 2014-09-04 | 2014-09-04 | A kind of pretreating device of TDI product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420508485.0U CN204065036U (en) | 2014-09-04 | 2014-09-04 | A kind of pretreating device of TDI product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204065036U true CN204065036U (en) | 2014-12-31 |
Family
ID=52206521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420508485.0U Active CN204065036U (en) | 2014-09-04 | 2014-09-04 | A kind of pretreating device of TDI product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204065036U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072557A (en) * | 2018-03-02 | 2018-05-25 | 南京科创检测技术有限公司 | A kind of volum-controlled type automatic dilutor |
| CN108072557B (en) * | 2018-03-02 | 2024-06-11 | 南京科创检测技术有限公司 | Constant volume type automatic dilution instrument |
-
2014
- 2014-09-04 CN CN201420508485.0U patent/CN204065036U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108072557A (en) * | 2018-03-02 | 2018-05-25 | 南京科创检测技术有限公司 | A kind of volum-controlled type automatic dilutor |
| CN108072557B (en) * | 2018-03-02 | 2024-06-11 | 南京科创检测技术有限公司 | Constant volume type automatic dilution instrument |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Ito | Determination of iodide in seawater by ion chromatography | |
| CN105628810A (en) | In-situ capture heterogeneous catalytic reaction intermediate product device and use method thereof | |
| US9995661B2 (en) | Flow-through high hydrostatic pressure microfluidic sample preparation device and related methods therefor | |
| Büldt et al. | Determination of nitrite in waters by microplate fluorescence spectroscopy and HPLC with fluorescence detection | |
| EP3043178B1 (en) | Automated sampling and reaction system for high pressure liquid chromatography and other types of detection | |
| Caballo-López et al. | Continuous ultrasound-assisted extraction coupled to on line filtration–solid-phase extraction–column liquid chromatography–post column derivatisation–fluorescence detection for the determination of N-methylcarbamates in soil and food | |
| Workman et al. | Process analytical chemistry | |
| Li et al. | Simultaneous determination of airborne carbamates in workplace by high performance liquid chromatography with fluorescence detection | |
| EP3179245B1 (en) | Multi-lumen mixing device for chromatography | |
| Reginato et al. | Scaling up metal scavenging operations for pharmaceutical pilot plant manufactures | |
| JP2021530198A (en) | Automatic synthetic reactor system with circulation loop | |
| Delahaye et al. | Implementing stationary-phase optimized selectivity in supercritical fluid chromatography | |
| CN204065036U (en) | A kind of pretreating device of TDI product | |
| CN104569201A (en) | Detecting method for testing residues of disperse dyes and dye intermediates | |
| Chen et al. | Advances in the on-line solid-phase extraction-liquid chromatography-mass spectrometry analysis of emerging organic contaminants | |
| McClain et al. | Greening flash chromatography | |
| EP2812309B1 (en) | Method for continuous separation of valine | |
| CN106610404A (en) | Method used for detecting cinacalcet hydrochloride isomerides via HPLC method | |
| CN108918899B (en) | High-throughput screening system, device and method for chemical reaction | |
| CN102680590B (en) | Two-dimensional liquid chromatogram (LC)-tandem mass spectrometry method for detecting four amine substances in water | |
| CN101470103B (en) | Sterides compound analysis method | |
| CN102139194B (en) | Evaluation device of cyclohexenol catalyst prepared by using benzene hydrogenation | |
| CN104181253A (en) | Integrated device used for catalyst estimation in hydrogenation process | |
| CN103331111B (en) | Acid feeding mechanism system and method | |
| CN101819187B (en) | Method for chromatographic determination of crude furfuryl alcohol composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |