CN216484742U - Drying agent pressure dew point testing device for laboratory - Google Patents
Drying agent pressure dew point testing device for laboratory Download PDFInfo
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- CN216484742U CN216484742U CN202122747023.7U CN202122747023U CN216484742U CN 216484742 U CN216484742 U CN 216484742U CN 202122747023 U CN202122747023 U CN 202122747023U CN 216484742 U CN216484742 U CN 216484742U
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- dew point
- dryer
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Abstract
The utility model relates to the technical field of dew point testing, and discloses a drying agent pressure dew point testing device for a laboratory. The laboratory desiccant dew point testing device comprises an air supply system, a temperature control system, a dew point testing system, a PLC control system, a silencer and a blow-off pipe. The air compressor provides compressed air, the PLC control system adjusts the inlet air temperature, flow and pressure of the dryer by controlling the heating device, the water cooling device and the buffer device, the gas-liquid separation device ensures that the compressed air entering the dryer is oil-free and water drop-free saturated (the humidity is more than 95%) wet air, and the dehumidification capacity of the desiccant is evaluated by measuring the dew point of the pressure gas dried by the desiccant, so that the aim of measuring the pressure dew point of the desiccant is fulfilled. The device has the advantages of compact structure, small occupied area, small desiccant consumption (the effective volume is 1.54L/column) and stable test performance, and is favorable for improving the efficiency of the in-situ regeneration activation technology of the waste desiccant in the laboratory.
Description
Technical Field
The utility model relates to a drying agent dew point testing device for a laboratory, and belongs to the technical field of dew point testing.
Background
The drying agent is widely used for deep drying of petroleum cracking gas and ethylene propylene gas and drying of hydrogen production, air separation devices and instrument air dryers, and the used drying agent is largely discarded because of losing most of the original functions, so that a large amount of solid waste is generated, and resource waste is caused. The in-situ (keeping the original pore structure) resource regeneration and reuse of the waste drying agent not only can change waste into valuable, but also can achieve the purposes of saving energy, reducing consumption and reducing carbon emission. The dew point measurement of the product is an important link for evaluating the feasibility of the regeneration process. The industrial dew point measuring device occupies a large area, has large consumption of the drying agent and large testing gas amount, and is not beneficial to the research and development of the regeneration process. There is a need to develop a dew point measuring device for a laboratory, which has a compact structure, a small amount of drying agent, a small amount of testing gas and stable performance. Taking industrial activated alumina as an example, the pressure dew point measurement generally requires that the amount of alumina is 20 kg/column (the stacking volume is about 30.77L), and an air supply system, a pressure control system and a temperature regulation system occupy a large area.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects of the prior art, the utility model provides a drying agent dew point testing device for a laboratory (the dosage of alumina only needs 1 kg/column, the air inlet flow is 18.5 +/-0.56L/min, and the air inlet pressure is 0.7 +/-0.014 MPa).
The utility model adopts the following technical scheme:
a desiccant dew point testing device for a laboratory, comprising:
the movable frame and the pipeline are used for assembling and connecting all the devices;
the air compressor is used for providing power for the device;
the heating device and the water cooling device are used for changing the temperature of the compressed gas conveyed from the air compressor;
the air buffer device is used for buffering and stabilizing air flow;
the gas-liquid separation device is used for ensuring that the compressed air entering the dryer has no oil or water drops;
a dryer with an effective diameter of 65mm and an effective height of 464mm (effective volume of 1.54L), wherein the column can be disassembled and replaced for drying the compressed gas and regenerating the drying agent;
the flowmeter, the first pressure gauge and the first thermometer are sequentially arranged between the gas-liquid separation device and the dryer;
the dew point instrument, the second thermometer and the second pressure gauge are all sequentially arranged on the outlet side of the dryer;
ball valves, stop valves, pneumatic valves, pressure regulating valves, check valves;
a PLC control system;
a muffler for noise processing;
the sewage discharge pipe is used for discharging sewage of each part;
and the pneumatic valves are electrically connected with the PLC control system.
Preferably, the dryer comprises a first dryer and a second dryer, a first pneumatic valve and a third pneumatic valve are arranged below the first dryer, a second pneumatic valve and a fourth pneumatic valve are arranged below the second dryer, one of the upper parts of the first dryer and the second dryer is connected through a third ball valve, the other one of the upper parts of the first dryer and the second dryer is connected through a first check valve and a second check valve, and the middle of the first check valve and the second check valve is connected to the outlet.
Preferably, the PLC control system is connected to the inlet of the dryer through a first ball valve and a first pressure regulating valve, and the PLC control system is connected to the outlet of the dryer through a second ball valve and a second pressure regulating valve.
As a preferred scheme, the first pressure gauge, the first temperature gauge, the dew point instrument, the second temperature gauge and the second pressure gauge are all connected with a pipeline through stop valves.
As a preferred scheme, the air compressor, the heating device, the water cooling device, the air buffer device, the gas-liquid separation device and the dryer are all connected with the sewage discharge pipe through ball valves.
Preferably, the flowmeter is a mass flowmeter.
Compared with the prior art, the laboratory desiccant dew point testing device provided by the utility model has the beneficial effects that:
the laboratory desiccant dew point testing device provided by the utility model adopts a heatless regeneration pressure swing adsorption device, the adsorbent amount is obviously reduced (the using amount of industrial activated alumina only needs 1 kg/column), the equipment volume is compact (1200 x 500 x 1750mm), an electric heater, a blower, a heat insulation layer and the like are omitted, the metal material consumption and the equipment investment cost are reduced, the power consumption and the operation cost are saved, and the development efficiency of the desiccant in-situ activation regeneration technology is improved.
Drawings
FIG. 1 is a process flow diagram of the apparatus;
FIG. 2 is a perspective view of the apparatus;
FIG. 3 is a top view of the device;
fig. 4 is a portion of the dryer of fig. 1.
Detailed Description
The utility model provides a drier pressure dew point testing arrangement is used in laboratory, comprises air compressor machine, heating device, water cooling plant, gas-liquid separation device, desiccator, flowmeter, manometer, thermometer, dew point meter, PLC control system and silencer.
The air compressor disclosed in example 1 provides compressed air for the device, the discharged compressed air sequentially passes through a heating device, a water cooling device and a gas-liquid separation device, and a PLC control system controls the air inlet temperature to be 35 +/-1 ℃ or 38 +/-1 ℃, the air inlet flow to be 18.5 +/-0.56L/min and the air inlet pressure to be 0.7 +/-0.014 MPa; saturated wet air enters an adsorption column (the using amount of industrial activated alumina is 1 kg/column), and the dew point of the dried air is measured by a dew point meter.
The utility model is further described below with reference to the accompanying drawings.
As shown in FIG. 4, when the adsorption dryer A (8-1) is operated and B (8-2) is regenerated, the pneumatic valves V01(17-1) are opened, V02(17-2) is closed, V03(17-3) is closed, V04(17-4) is opened, moisture enters the adsorption dryer A (8-1) from V01(17-1), after moisture is removed, dry gas is sent out through a check valve ZV1(19-1), a dew point instrument, a thermometer and a pressure gauge, part of the dry gas is sent into the adsorption dryer B (8-2) through a ball valve QV (15-3) to regenerate an adsorbent, and waste gas is discharged through V04(17-4) and a silencer. After regeneration of the adsorption dryer B (8-2) is finished, closing V04(17-4) to stop exhaust gas discharge, causing a pressurizing process of the adsorption dryer B (8-2), opening V03(17-3) and V02(17-2) when the pressure of the adsorption dryer B (8-2) reaches or approaches to working pressure, closing V01(17-1), namely, moisture enters the adsorption dryer B (8-2) through V02(17-2), then sending dry gas through ZV2(19-2), a dew point instrument, a thermometer and a pressure gauge, sending part of the dry gas into the adsorption dryer A (8-1) through a ball valve QV (15-3) to regenerate an adsorbent, and emptying the exhaust gas through V03(17-3) and a silencer.
Claims (6)
1. A laboratory is with drier pressure dew point testing arrangement which characterized in that includes:
the movable type pipeline device comprises a movable type frame (1) and a pipeline (2) which are used for assembling and connecting all devices;
the air compressor (3) is used for providing power for the device;
the heating device (4) and the water cooling device (5) are used for changing the temperature of the compressed gas delivered from the air compressor;
the air buffer device (6) is used for buffering and stabilizing air flow;
a gas-liquid separation device (7) for ensuring that the compressed air entering the dryer is free of oil and water drops;
a dryer (8) for drying the compressed gas and regenerating the drying agent;
the flowmeter (9), the first pressure gauge (10) and the first thermometer (11) are sequentially arranged between the gas-liquid separation device and the dryer;
the dew point instrument (12), the second thermometer (13) and the second pressure gauge (14) are sequentially arranged on the outlet side of the dryer;
a ball valve (15), a stop valve (16), an air-operated valve (17), a pressure regulating valve (18) and a check valve (19);
PLC control system (20)
A muffler (21) for noise processing;
a sewage discharge pipe (22) for discharging sewage of each component;
the pneumatic valves (17) are all electrically connected with the PLC control system (20).
2. The laboratory desiccant pressure dew point testing device of claim 1, the dryer (8) comprises a first dryer (8-1) and a second dryer (8-2), a first pneumatic valve (17-1) and a third pneumatic valve (17-3) are arranged below the first dryer (8-1), a second pneumatic valve (17-2) and a fourth pneumatic valve (17-4) are arranged below the second dryer (8-2), one of the upper parts of the first dryer (8-1) and the second dryer (8-2) is connected through a third ball valve (15-3), and the other one is connected with the second check valve (19-2) through a first check valve (19-1), the first check valve (19-1) and the second check valve (19-2) are connected to the outlet in between.
3. Desiccant pressure dew point test device for laboratory use according to claim 1, characterized in that said PLC control system (20) is connected to the inlet of the drier (8) through a first ball valve (15-1) and a first pressure regulating valve (18-1), said PLC control system (20) being connected to the outlet of the drier (8) through a second ball valve (15-2) and a second pressure regulating valve (18-2).
4. Desiccant pressure dew point test device for laboratory use according to claim 1, characterised in that the first pressure gauge (10), the first temperature gauge (11), the dew point meter (12), the second temperature gauge (13), the second pressure gauge (14) are connected to the pipeline (2) by means of a shut-off valve (16).
5. The drying agent pressure dew point testing device for the laboratory according to claim 1, wherein the air compressor (3), the heating device (4), the water cooling device (5), the air buffer device (6), the gas-liquid separation device (7) and the dryer (8) are all connected with the blow-off pipe (22) through a ball valve (15).
6. Desiccant pressure dew point testing device for laboratory use according to claim 1, characterized in that the flow meter (9) is a mass flow meter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122747023.7U CN216484742U (en) | 2021-11-11 | 2021-11-11 | Drying agent pressure dew point testing device for laboratory |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122747023.7U CN216484742U (en) | 2021-11-11 | 2021-11-11 | Drying agent pressure dew point testing device for laboratory |
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| Publication Number | Publication Date |
|---|---|
| CN216484742U true CN216484742U (en) | 2022-05-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122747023.7U Active CN216484742U (en) | 2021-11-11 | 2021-11-11 | Drying agent pressure dew point testing device for laboratory |
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| Country | Link |
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| CN (1) | CN216484742U (en) |
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2021
- 2021-11-11 CN CN202122747023.7U patent/CN216484742U/en active Active
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