CN218865616U - BET sample pretreatment device - Google Patents
BET sample pretreatment device Download PDFInfo
- Publication number
- CN218865616U CN218865616U CN202223060775.7U CN202223060775U CN218865616U CN 218865616 U CN218865616 U CN 218865616U CN 202223060775 U CN202223060775 U CN 202223060775U CN 218865616 U CN218865616 U CN 218865616U
- Authority
- CN
- China
- Prior art keywords
- sample
- needle valve
- base
- sample cell
- bet
- 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
Images
Abstract
The utility model provides a BET sample preprocessing device, a serial communication port, include: vacuum system, gaseous purge system, base, first preheating stage, second preheating stage, heating member, sample cell, pressure sensor, vacuum system passes through vacuum pump, discharge valve, first needle valve, air guide pipeline and sample cell and is connected, gaseous purge system is connected with the air inlet of sample cell through second needle valve, air guide pipeline, the gas outlet of sample cell is passed through air guide pipeline and is connected with pressure sensor. The preheating table is arranged on the base, and a heating element is arranged in the base. The utility model discloses the advantage lies in being provided with 2 preheating stages, can set up simultaneously that different treatment temperature is long with the processing, and the different sample of degasification temperature of simultaneous processing has promoted pretreatment efficiency, save time greatly.
Description
Technical Field
The utility model relates to a physical adsorption sample pretreatment field, concretely relates to BET sample pretreatment device.
Background
The BET specific surface area test method is widely applied to particle surface adsorption performance research and data processing of related detection instruments, the BET formula is the most widely applied method in the industry at present, the reliability of the test result is the strongest, and almost all domestic and foreign related standards are established according to the BET equation. Before the BET specific surface area is measured, the sample is first pretreated, mainly by heating and degassing, and the pretreatment temperature is not only to remove water from the sample, but also to take care not to damage the sample. Generally, the safe degassing temperature of the oxides such as alumina and silicon dioxide can reach 350 ℃; the safe degassing temperature of most carbon materials and calcium carbonate is about 300 ℃; whereas hydrates require much lower degassing temperatures. The treatment times are also not very different for different samples, and for some microwell samples the degassing time needs to be even more than 12 hours.
The BET sample pretreatment device in the current market can only set one treatment temperature when heating a sample, can not treat samples with different degassing temperatures at the same time, and leads to lower utilization rate of a test position and inconvenient use under the conditions of more test samples and heavy test tasks. Therefore, a BET sample pretreatment device is proposed to solve the above problems.
Disclosure of Invention
In order to compensate prior art not enough, solve the sample preliminary treatment of BET sample and can not handle the sample of different degasification temperatures simultaneously, use inconvenient, the problem of inefficiency, the utility model provides a BET sample preliminary treatment device.
The utility model provides a technical scheme that its technical problem adopted is: a BET sample preprocessing device, including vacuum system, gaseous purge system, base, first preheating stage, second preheating stage, heating member, sample cell, pressure sensor, vacuum system passes through vacuum pump, discharge valve, first needle valve, air conduit and sample cell connection, gaseous purge system is connected with the air inlet of sample cell through second needle valve, air conduit, the gas outlet of sample cell is passed through air conduit and is connected with pressure sensor, the preheating stage is arranged in on the base, the inside of base is provided with the heating member.
Further, there are 2 preheating stages.
Furthermore, there are 6 sample tubes, and the sample tubes are connected with the vacuum system, the gas purging system and the pressure sensor through gas pipelines.
Further, the first needle valve may adjust a vacuum rate.
Further, the second needle valve may regulate a gas flow rate.
The beneficial effects of the utility model reside in that: be provided with 2 preheating stages, can set up different treatment temperature simultaneously and process duration, handle different degassing temperature's sample simultaneously, promoted preliminary treatment efficiency greatly, save time.
Drawings
In order to illustrate the embodiments of the present invention or the technical solutions in the prior art more clearly, the drawings used in the description of the embodiments or the prior art will be briefly introduced, and it is obvious that the drawings in the description below are only some embodiments of the present invention.
Fig. 1 is a schematic structural diagram of the present invention.
In the figure, 1, a vacuum system; 101. a vacuum pump; 102 a first needle valve; 103. an exhaust valve; 2. a gas purging system; 3. a second needle valve; 4. a base; 5. a heating member; 6. a first preheating stage; 7. a second preheat stage; 8. a sample tube; 9. a pressure sensor.
Detailed Description
Referring to fig. 1, a BET sample pretreatment device includes a vacuum system (1), a gas purging system (2), a base (4), a heating member (5), a first preheating stage (6), a second preheating stage (7), a sample tube (8), and a pressure sensor (9).
The vacuum system (1) is connected with the sample tube (8) through a vacuum pump (101), a first needle valve (102), an exhaust valve (103) and an air guide pipeline.
The gas purging system (2) is connected with a gas inlet of the sample tube (8) through the second needle valve (3) and the gas guide pipeline, and a gas outlet of the sample tube (8) is connected with the pressure sensor (9) through the gas guide pipeline.
The first preheating table (6) and the second preheating table (7) are arranged on the base (4), and a heating element (5) is arranged in the base (4).
Furthermore, there are 6 sample tubes (8), and the sample tubes (8) are connected with the vacuum system (1), the gas purging system (2) and the pressure sensor (9) through gas guide pipelines.
Further, the first needle valve (102) may adjust a vacuum rate.
Further, the second needle valve (3) can adjust the gas flow.
The working principle is as follows: putting sample tubes filled with samples with the same degassing treatment temperature into a first preheating table (6), setting treatment temperature and time, putting sample tubes needing different temperature treatment into a second preheating table (7), setting treatment temperature and time, opening a vacuum system (1) for vacuumizing, adjusting vacuum rate through a first needle valve (102), opening a gas purging system for purging when the vacuum degree reaches a target value, and cooling the sample tubes after heating treatment.
While the preferred embodiments of the present invention have been described, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the general inventive concept, and it is intended to cover all such changes and modifications as fall within the true spirit and scope of the invention.
Claims (4)
1. A BET sample pretreatment device is characterized by comprising: vacuum system, gaseous purge system, base, first preheating stage, second preheating stage, heating member, sample cell, pressure sensor, vacuum system passes through vacuum pump, discharge valve, first needle valve, air guide pipeline and sample cell and is connected, gaseous purge system is connected with the air inlet of sample cell through second needle valve, air guide pipeline, the gas outlet of sample cell is passed through air guide pipeline and is connected with pressure sensor, preheating stage arranges in on the base, the inside of base is provided with the heating member.
2. The BET sample pretreatment apparatus of claim 1, wherein: there are 2 preheating stages.
3. The BET sample pretreatment apparatus of claim 1, wherein: the number of the sample tubes is 6, and the sample tubes are connected with the vacuum system, the gas purging system and the pressure sensor through gas guide pipelines.
4. The BET sample pretreatment apparatus of claim 1, wherein: the first needle valve can adjust the vacuum rate, and the second needle valve can adjust the gas flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223060775.7U CN218865616U (en) | 2022-11-18 | 2022-11-18 | BET sample pretreatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223060775.7U CN218865616U (en) | 2022-11-18 | 2022-11-18 | BET sample pretreatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218865616U true CN218865616U (en) | 2023-04-14 |
Family
ID=87375795
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223060775.7U Active CN218865616U (en) | 2022-11-18 | 2022-11-18 | BET sample pretreatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218865616U (en) |
-
2022
- 2022-11-18 CN CN202223060775.7U patent/CN218865616U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203191239U (en) | Online analyzing and pretreating system for outlet samples of carbonyl reactor | |
| CN108132211A (en) | A kind of supercritical carbon dioxide corrosion testing apparatus and application method | |
| CN218865616U (en) | BET sample pretreatment device | |
| CN102062708B (en) | Device for pretreatment of amino acid test sample | |
| CN207992012U (en) | A kind of supercritical carbon dioxide corrosion testing apparatus | |
| CN111855922A (en) | Online sampling device | |
| CN111351907A (en) | High-purity gas analysis system and use method | |
| CN101169451B (en) | Integral multi-components fermented tail gas on-line detection device | |
| CN201909730U (en) | Preprocessing device for amino acid testing sample | |
| CN216522673U (en) | Airtight drying device of electronic grade polyimide resin | |
| CN115267026A (en) | High-pressure low-temperature phase balance measuring device | |
| CN210905703U (en) | Membrane belt cleaning device | |
| CN201107318Y (en) | Integration multi-component fermentation tail gas on-line testing apparatus | |
| CN2554618Y (en) | Pressure treatment reactor | |
| CN219283056U (en) | Gas cylinder purifying treatment system with self-detection function | |
| CN112337271A (en) | Water removal method and device for hydrogen chloride steel cylinder | |
| CN113804518B (en) | High-purity and ultra-purity gas high-fidelity sampling device and method | |
| CN212301505U (en) | Online sampling device | |
| CN214895111U (en) | Electronic gas purity analysis detection control device | |
| CN212568673U (en) | High-purity gas analysis system | |
| CN205223334U (en) | A high accuracy vacuum developments control system for vacuum nitrogenize | |
| CN220542589U (en) | Purging device | |
| CN215864581U (en) | Novel vacuum furnace gas supply and exhaust system | |
| CN209656415U (en) | Digesting | |
| CN220507711U (en) | Atmosphere regulating system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |