CN216747241U - Gas adsorption performance testing device capable of heating uniformly - Google Patents
Gas adsorption performance testing device capable of heating uniformly Download PDFInfo
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- CN216747241U CN216747241U CN202220027742.3U CN202220027742U CN216747241U CN 216747241 U CN216747241 U CN 216747241U CN 202220027742 U CN202220027742 U CN 202220027742U CN 216747241 U CN216747241 U CN 216747241U
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Abstract
The utility model provides an even heating's gas adsorption performance testing arrangement, includes the sleeve, the sleeve is double-deck sleeve, divide into urceolus and inner tube, urceolus top and bottom lateral wall set up heat source import and heat source export, the inner tube downside is the necking down structure, the necking down structure is used for keeping flat the baffle, arranges miniature dynamometry weighing sensor in on the baffle of necking down, be provided with the thermocouple data line preformed hole and the miniature dynamometry weighing sensor data line preformed hole that run through the urceolus on the sleeve, be provided with the fine sieve board that is used for bearing the weight of the adsorbent on the miniature dynamometry weighing sensor. The utility model discloses a gas adsorption device capable of monitoring the quality change of a reactant in real time, which is used for solving the problems of uniform heating, single adsorption quantity indication, temperature difference inside and outside a cylinder and safety of the conventional device.
Description
Technical Field
The utility model belongs to the technical field of laboratory gas adsorption performance testing, and particularly relates to a uniformly-heated gas adsorption performance testing device.
Background
The conventional gas adsorption apparatus is generally composed of three parts: a reactor, an object stage and an electric heating device. The reactor is generally cylindrical and mainly comprises a stainless steel pipe and a quartz pipe; the objective table is used for bearing a sample, and fine sieve plates or quartz wool with different specifications can be selected according to the particle size; the electric heating device is generally connected with an intelligent temperature controller through a resistance wire wrapped outside the cylinder to realize constant temperature or programmed temperature control. The existing device has a plurality of defects:
first, resistance wire heating presents the following problems:
1) due to the difference of winding density of the resistance wire, the reaction temperature at each position in the cylinder body is different, that is, the uniform heating of the reactor cannot be guaranteed, and the accuracy and the reliability of experimental data can be influenced.
2) The quality change of the solid adsorbent on the objective table can not be monitored in real time in the experimental process, so that the representation mode of the sample adsorption capacity is single (namely the difference value of the concentrations of inlet and outlet gases).
Secondly, due to the limitations of the devices themselves, the existing devices have the following defects:
3) the existing device adopts resistance wires to heat the outer wall of a cylinder body, and indirectly regulates and controls the reaction temperature of a bed layer. When the bed material quantity is less, the barrel wall and the adsorbent clearance is bigger, and the actual reaction temperature is a little lower than the theoretical temperature, and the experiment has the error.
4) The resistance wire wraps up in the barrel outer wall, exposes in the air, has very big potential safety hazard (scald, electric shock, conflagration etc.), easily takes place dangerous accident.
The prior adsorption device has the following problems: the problem of uniform heating, the problem of single indication of adsorption amount, the problem of temperature difference inside and outside the cylinder body and the safety problem.
Disclosure of Invention
In order to overcome the defects of the prior art, the utility model aims to provide a gas adsorption performance testing device capable of uniformly heating, and provides a gas adsorption device capable of uniformly heating at a constant temperature and monitoring the quality change of a reactant in real time, so as to solve the problems of uniform heating, single adsorption quantity indication, temperature difference inside and outside a cylinder and safety of the conventional device.
In order to achieve the purpose, the utility model adopts the technical scheme that:
a gas adsorption performance testing device capable of heating uniformly comprises a sleeve 3, wherein the sleeve 3 is a double-layer sleeve and is divided into an outer cylinder with two closed ends and an inner cylinder with two closed ends, a heat source inlet 13 is formed in the side wall of the top of the outer cylinder, a heat source outlet 6 is formed in the side wall of the bottom of the outer cylinder, a necking structure is arranged below the inner part of the inner cylinder, a baffle 9 is flatly placed at the necking structure, a miniature force measuring and weighing sensor 10 is arranged on the baffle 9, a thermocouple data line reserved hole 4 and a miniature force measuring and weighing sensor data line reserved hole 5 which penetrate through the outer cylinder are formed in the sleeve 3, a thermocouple 12 and the miniature force measuring and weighing sensor 10 are respectively connected with a temperature digital display 14 and a weighing digital display 15 through a sensing data line penetrating hole, a fine sieve plate 11 used for bearing an adsorbent is arranged on the miniature force measuring and weighing sensor 10, an upper cover 2 is placed at the top of the inner cylinder, lower cover 8 has been placed to the bottom, passes upper cover 2 and is provided with air inlet 1, passes lower cover 8 and is provided with gas outlet 7, has placed the adsorbent on fine screen plate 11, thermocouple 12 is through hanging in fine screen plate 11 central top and 4 parallel and level departments of thermocouple data line preformed hole.
The heat source inlet 13 and the heat source outlet 6 are bent pipes.
The sleeve 3 is a double-layer quartz glass sleeve.
The baffle 9 is a large-pore stainless steel baffle.
The fine sieve plate 11 is flatly placed on the miniature load cell 10.
Thermoelectric even data line preformed hole 4 and miniature dynamometry weighing sensor data line preformed hole 5, thermoelectric even data line preformed hole 4 seals with the trompil rubber buffer for external temperature digital display instrument 14, miniature dynamometry weighing sensor data line preformed hole 5 seals with the trompil rubber buffer for external weighing digital display instrument 15, the mass change of monitoring reactant in the reaction process.
The inner cylinder is evenly wrapped by the outer cylinder.
The area between the upper part of the fine sieve plate 11 in the inner cylinder and the upper cover 2 is a reaction chamber of the device.
The thermocouple 12 is covered with an adsorbent wrap, measuring the real-time temperature of the adsorbent reactor.
The use method of the uniformly heated gas adsorption performance testing device comprises the following steps;
before the experiment is started, a heat source is introduced from a heat source inlet 13 and discharged from a heat source outlet 6, the heat source flows in the sleeve 3 in a circulating mode to heat the reaction chamber of the inner barrel at a constant temperature, a temperature digital display instrument 14 of the thermocouple is observed, and the experiment is started after the temperature reading reaches the specified temperature and is constant;
when the experiment is started, gas to be adsorbed is introduced from the gas inlet 1, firstly passes through the adsorbent and is adsorbed by the adsorbent, and residual gas is discharged from the gas outlet 7 after passing through the fine sieve plate 11 and is received by the gas data collector; the mass of the adsorbent is changed due to the reaction of the adsorbent and the gas to be adsorbed, and at the moment, the mass change and the mass change rate of the reactant can be monitored in real time through the miniature force-measuring weighing sensor 10 supporting the fine sieve plate 11;
the reaction of the adsorbent with the gas is usually accompanied by an increase or decrease in heat, and the temperature change in the reactor can be monitored in real time by inserting a thermocouple 12 into the adsorbent and observing a digital temperature display 14 connected thereto.
The utility model has the beneficial effects that:
1) the reactor was heated uniformly. The heat source adopts gas and liquid states, and can evenly heat the reactor barrel by matching with a double-layer sleeve structure, so that the experimental data is more accurate.
2) And the quality change of the reaction materials is monitored in real time, and a new characterization mode (mass rate, mass size and the like of the adsorbent) is provided for the adsorption capacity of the adsorbent.
3) Effectively reducing the error between the actual temperature and the theoretical value of the reaction. The traditional heating system heats bed materials indirectly through the outer wall of the heating cylinder, so that the actual temperature of a bed layer is slightly lower than the theoretical temperature. The heat source can be properly heated in the experimental process, so that the experimental temperature is close to a theoretical value, and the influence of temperature errors on experimental data is reduced.
4) The heat source selection is diversified. The quartz glass has the characteristics of high temperature resistance, stable chemical property and good electric-thermal insulation performance, and on the basis, the device has a wide heat source selection range, namely, gases and liquids with different temperatures can be selected according to the scene requirements.
5) The safety is improved. The traditional resistance wire heating is abandoned, and a double-layer quartz sleeve structure is adopted, so that the risk that an experimenter gets an electric shock and a fire disaster occurs due to the fact that the high-temperature resistance wire contacts with inflammable matters is effectively avoided.
Drawings
FIG. 1 is a schematic view of the structure of the present invention.
Fig. 2 is a cross-sectional view of the present invention.
FIG. 3 is a schematic view of a gas adsorption system of the present invention.
In the drawings: 1-air inlet, 2-upper cover, 3-sleeve, 4-thermocouple data line preformed hole, 5-miniature force-measuring weighing sensor data line preformed hole, 6-heat source outlet, 7-air outlet, 8-lower cover, 9-baffle, 10-miniature force-measuring weighing sensor, 11-fine sieve plate, 12-thermocouple, 13-heat source inlet, 14-temperature digital display instrument, 15-weight digital display instrument, 16-heat source circulating device, 17-fixed bed device, 18-air bottle, 19-data collector and 20-peristaltic pump.
Detailed Description
The present invention will be described in further detail with reference to examples.
As shown in fig. 1: a fixed bed gas adsorption device capable of achieving uniform heating specifically comprises a reactor, an objective table, a heating system and a mass weighing system.
Furthermore, the reactor is a double-layer quartz glass sleeve 3, firstly, the quartz glass has good heat conductivity coefficient, and secondly, the quartz glass has high heat resistance, and the short-term use temperature can reach 1400 ℃. Therefore, the quartz glass material is selected as the reactor, so that the temperature error and energy loss caused in the adsorption process can be reduced, and an equipment basis is provided for diversified selection of heat sources and adsorbents.
The sleeve 3 is structured as follows: double-deck sleeve is the closed sleeve, and upper cover 2, lower cover 8 are the trompil rubber buffer, and urceolus top and bottom lateral wall design heat source import 13 and heat source export 6, and heat source import 13 and heat source export 6 are the return bend, and the necking down of inner tube downside design, barrel are run through in 3 trompils two places (hole 1 of sleeve, hole 2), compare with traditional resistance wire electrical heating, and double-deck sleeve structure can effectively carry out the even heating of constant temperature to adsorbent in the reactor.
Furthermore, the constriction is used for flatly placing the baffle 9, and the baffle 9 should be selected to have a large aperture as much as possible so as to reduce the obstruction of the air flow due to too small an aperture. A miniature load cell 10 was placed on the necked baffle 9 to monitor the change in weight of the adsorbent during the reaction in real time.
Furthermore, the objective table is to place the fine sieve plate 11 on the micro load cell 10 to bear the adsorbent. The objective table is a fine sieve plate with different specifications according to different particle sizes of the adsorbent particles.
Further, hole 1 is thermocouple sensing wire preformed hole 4 to seal with the trompil rubber buffer, for external temperature digital display appearance, both can be used for the initial temperature in the accurate control reactor, can monitor the temperature variation in the reactor again in the reaction process.
Further, hole 2 is miniature dynamometry weighing sensor data line preformed hole 5 to seal with the trompil rubber buffer, for external digital display instrument of weighing, the mass change of monitoring reactant in the reaction process provides new characterization mode (mass change, the mass rate of change etc. of adsorbent) for the adsorption capacity of adsorbent.
FIG. 2 is a cross sectional view of the present invention, through which it can be seen visually that the reaction tube (inner tube) is uniformly wrapped by the outer tube, and the temperature in the reaction tube is effectively uniform and constant, and during the experiment process, the change of the reaction material mass is monitored by the digital weighing display 15, and the change of the temperature in the reactor is monitored by the digital temperature display 14, so that the problems of uneven heating and single measurement mode of gas adsorption amount of the existing device are effectively solved.
Fig. 3 is a schematic view of the gas adsorption system of the present invention, which is composed of a heat source circulation device 16, a gas adsorption device 17, a gas cylinder 18, a data acquisition device 19 and a peristaltic pump 20. The heat source circulating device 16 provides a constant heat source for the whole experiment process; the gas adsorption device 17 is used for adsorbing gas and monitoring the quality change of the reactant; the data acquisition unit 19 is used for collecting and analyzing the gas concentration of the inlet and the outlet; peristaltic pump 20 powers the circulating flow of the heat source.
Firstly, the gas cylinder 18 is closed, the heat source circulating device 16 provides a heat source for the gas adsorption device 17, the heat source is circularly supplied through the peristaltic pump 20, then, the gas adsorption device 17 is observed to reach the specified temperature, the gas cylinder 18 is opened, the gas to be adsorbed is introduced, the adsorbent reacts with the gas, and finally, the observation data acquisition device 19 and the temperature and weighing digital display instrument record the experimental data in the experimental process.
The working principle of the utility model is as follows:
before the experiment is started, a heat source is introduced from a heat source inlet and discharged from a heat source outlet 6, the heat source circularly flows in the double-layer quartz glass sleeve 3 to heat the reaction chamber of the inner cylinder at constant temperature, a temperature digital display instrument 14 of the thermocouple is observed, and the experiment is started after the temperature reading reaches the specified temperature and is constant;
when the experiment is started, gas to be adsorbed is introduced from the gas inlet 1, firstly passes through the adsorbent and is adsorbed by the adsorbent, and residual gas is discharged from the gas outlet 7 after passing through the fine sieve plate 11 and is received by the gas data collector; the mass of the adsorbent is changed due to the reaction of the adsorbent and the gas to be adsorbed, and at the moment, the mass change and the mass change rate of the reactant can be monitored in real time through the miniature force-measuring weighing sensor 10 supporting the fine sieve plate 11;
the reaction of the adsorbent with the gas is usually accompanied by an increase or decrease in heat, and the temperature change in the reactor can be monitored in real time by inserting a thermocouple 12 into the adsorbent and observing a digital temperature display 14 connected thereto.
The device can complete constant temperature and uniform heating of the reaction chamber, and simultaneously monitor the reaction temperature, the reaction quality change, the quality rate change and the like in real time, thereby completing the whole adsorption process of the adsorbent to the gas to be detected.
Claims (9)
1. The uniformly-heated gas adsorption performance testing device is characterized by comprising a sleeve (3), wherein the sleeve (3) is a double-layer sleeve and is divided into an outer cylinder with two closed ends and an inner cylinder with two closed ends, a heat source inlet (13) is formed in the side wall of the top of the outer cylinder, a heat source outlet (6) is formed in the side wall of the bottom of the outer cylinder, a necking structure is arranged below the inner part of the inner cylinder, a baffle (9) is horizontally arranged at the necking structure, a miniature force measuring and weighing sensor (10) is arranged on the baffle (9), a thermoelectric even data line reserved hole (4) and a miniature force measuring and weighing sensor data line reserved hole (5) which penetrate through the outer cylinder are formed in the sleeve (3), a thermocouple (12) and the miniature force measuring and weighing sensor (10) are respectively connected with a temperature digital display instrument (14) and a weighing digital display instrument (15) through a sensing data line penetrating hole, a fine sieve plate (11) used for bearing an adsorbent is arranged on the miniature force measuring and weighing sensor (10), an upper cover (2) is placed at the top of the inner barrel, a lower cover (8) is placed at the bottom of the inner barrel, an air inlet (1) is formed by penetrating through the upper cover (2), an air outlet (7) is formed by penetrating through the lower cover (8), an adsorbent is placed on the fine sieve plate (11), and the thermocouple (12) is hung above the center of the fine sieve plate (11) and is aligned with the thermoelectric even data line reserved hole (4).
2. A uniformly heated gas sorption performance testing apparatus according to claim 1, wherein the heat source inlet (13) and the heat source outlet (6) are elbows.
3. A uniformly heated gas sorption performance testing apparatus according to claim 1, wherein the sleeve (3) is a double quartz glass sleeve.
4. A uniformly heated gas adsorption performance testing apparatus as claimed in claim 1, wherein the fine screen plate (11) is laid flat on a micro load cell (10).
5. The uniformly-heated gas adsorption performance testing device according to claim 1, wherein the thermoelectric even data line preformed hole (4) and the miniature load cell data line preformed hole (5) are sealed by perforated rubber plugs for externally connecting the temperature digital display instrument (14), and the miniature load cell data line preformed hole (5) is sealed by perforated rubber plugs for externally connecting the load cell data line preformed hole (15), so as to monitor the mass change of reactants in the reaction process.
6. The apparatus for testing adsorption performance of a uniformly heated gas as claimed in claim 1, wherein said inner cylinder is uniformly wrapped by said outer cylinder.
7. The apparatus for testing the adsorption performance of a uniformly heated gas according to claim 1, wherein the baffle (9) is a large-pore stainless steel baffle.
8. A uniformly heated gas adsorption performance testing apparatus as claimed in claim 1, wherein the region of the inner cylinder above the fine sieve plate (11) to the upper cover (2) is the reaction chamber of the apparatus.
9. A uniformly heated gas sorption performance testing apparatus according to claim 1, wherein the thermocouple (12) is coated with sorbent and measures the real-time temperature of the sorbent reactor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220027742.3U CN216747241U (en) | 2022-01-06 | 2022-01-06 | Gas adsorption performance testing device capable of heating uniformly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220027742.3U CN216747241U (en) | 2022-01-06 | 2022-01-06 | Gas adsorption performance testing device capable of heating uniformly |
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| Publication Number | Publication Date |
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| CN216747241U true CN216747241U (en) | 2022-06-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202220027742.3U Active CN216747241U (en) | 2022-01-06 | 2022-01-06 | Gas adsorption performance testing device capable of heating uniformly |
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- 2022-01-06 CN CN202220027742.3U patent/CN216747241U/en active Active
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