CN208239396U - Pressure swing adsorption separation CH4/N2Performance evaluation device for adsorbent for mixed gas - Google Patents
Pressure swing adsorption separation CH4/N2Performance evaluation device for adsorbent for mixed gas Download PDFInfo
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- CN208239396U CN208239396U CN201820707500.2U CN201820707500U CN208239396U CN 208239396 U CN208239396 U CN 208239396U CN 201820707500 U CN201820707500 U CN 201820707500U CN 208239396 U CN208239396 U CN 208239396U
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Abstract
The utility model discloses a pressure swing adsorption separation CH4/N2The evaluation device comprises an adsorption tower, an argon bottle, a methane-nitrogen gas mixed bottle, a gas analyzer and a vacuum pump, wherein the argon bottle is communicated with an upper gas outlet pipeline through an argon conveying pipeline, the methane-nitrogen gas mixed bottle is communicated with a lower gas outlet pipeline through a mixed gas conveying pipeline, the gas analyzer is communicated with the argon conveying pipeline and the upper gas outlet pipeline through a first gas pipeline, the gas analyzer is communicated with a P L C controller, a first pressure sensor is connected to the first gas pipeline and is communicated with a P L C controller, a P L C controller is communicated with a computer, the vacuum pump is communicated with the mixed gas conveying pipeline and the lower gas outlet pipeline through a second gas pipeline, a second pressure sensor is connected to the second gas pipeline and is communicated with the P L C controllerAnd (5) communication connection. The device has reliable evaluation result, simple structure and convenient operation.
Description
Technical field
The utility model relates to performance of the adsorbent detection engineering device technique fields, separate more particularly to a kind of pressure-variable adsorption
CH4/N2The device for evaluating performance of gaseous mixture adsorbent.
Background technique
PSA Technology is a kind of way of realization of gas absorption separation, i.e., using adsorbent to each in gaseous mixture
The kinetic effect of external diffusion or the difference of steric effect in the adsorption capacity of component, absorbent particles are to push away with pressure change
Power, the technology for making a kind of component be purified and be purified.
In recent years, the pressure swing adsorption technique advantage good with flexible and convenient operation, small investment, performance, become concentration methane/
The technology of greatest concern of nitrogen.The selection that the very crucial factor of pressure swing adsorption/separation of methane/nitrogen is exactly adsorbent is influenced,
The superiority and inferiority of performance of the adsorbent directly affects methane/nitrogen mixture pressure-variable adsorption separating effect.Therefore the research to adsorbent
Exploitation is always popular research topic.
But there is presently no special adsorbent evaluation equipment, cannot carry out to the performance of pressure-variable adsorption separation adsorbent
Objective appraisal, it is therefore necessary to solve the problems, such as this, a kind of device for evaluating performance of pressure-variable adsorption separation adsorbent is provided.
Utility model content
The utility model is mainly solving the technical problems that provide a kind of performance evaluation of pressure-variable adsorption separation adsorbent
Device, the device evaluation result is reliable, and structure is simple, easy to operate.
In order to solve the above technical problems, the technical solution adopted in the utility model is: a kind of pressure-variable adsorption separation CH4/N2It is mixed
The device for evaluating performance of gas adsorbent is closed, the device for evaluating performance includes adsorption tower, is inhaled in the adsorption tower for filling
Attached dose, be connected with outlet pipe at the top of the adsorption tower, the bottom of the adsorption tower is connected with lower outlet pipe, it is described on
The first common valve and the first needle valve are serially connected on outlet pipe；
The device for evaluating performance further includes argon bottle and methane nitrogen mixture bottle, the gas outlet installation of the argon bottle
There is the first pressure reducing valve, the gas outlet of the methane nitrogen mixture bottle is equipped with the second pressure reducing valve, and first pressure reducing valve passes through
Argon delivery lines road is connected to the upper outlet pipe, and second pressure reducing valve passes through mixed gas pipeline road and the lower outlet
Pipeline connection, is serially connected with the second needle valve and the second common valve on the argon delivery lines road, on the mixed gas pipeline road
It is serially connected with third common valve；
The device for evaluating performance further includes gas analyzer, and the gas analyzer passes through first gas pipeline and argon gas
Conveyance conduit is connected to the upper outlet pipe, is serially connected with the 4th common valve, third needle valve on the first gas pipeline
And mass flowmenter, the gas analyzer and PLC controller communication connection are also connected with first on the first gas pipeline
Pressure sensor, the first pressure sensor and the PLC controller communication connection, the PLC controller and computer are logical
News connection；
The device for evaluating performance further includes vacuum pump, and the vacuum pump passes through second gas pipeline and mixed gas pipeline
Road is connected to the lower outlet pipe, is serially connected with the 5th common valve and the 6th common valve on the second gas pipeline, and described
Second pressure sensor, the second pressure sensor and the PLC controller communication connection are also connected on two gas pipelines.
It is further preferred that being provided with temperature regulation layer outside the adsorption tower.
As a kind of specific embodiment, the temperature regulation layer is the fire resisting being packaged on the adsorption tower periphery wall
Brick layer is provided with resistive heater in the fire brick layer.
Further, also packet is equipped with glass fibre cotton insulating layer outside the fire brick layer.
PSA Technology adsorbs in high pressure, low pressure when desorb.Pressure-variable adsorption separation provided by the utility model
With the device for evaluating performance of adsorbent, N is utilized2Compared with CH4The bigger feature of diffusion rate on the sorbent adsorbs N under high pressure2,
N at this time2Shared partial pressure is greater than CH in adsorption tower bed4Shared partial pressure, weakly adsorbed components are product gas CH4, directly from suction
Attached column overhead outflow, has certain pressure.Major part N when reducing pressure2It is desorbed from absorbent particles, when absorption terminates to inhale
When attached tower bed layer pressure is down to normal pressure, further decreasing gross pressure in adsorption tower adsorption bed using the method inversely vacuumized makes
N2Partial pressure further decrease, N2It is desorbed, so that adsorbent is regenerated, prepares for next adsorption experiment as far as possible.
The pressure-variable adsorption separation provided by the utility model device for evaluating performance of adsorbent, can be by controlling methane nitrogen
The pressure of work off one's feeling vent one's spleen flow and the adsorption tower of gas mixing gas cylinder tests CH at adsorption column outlet4Concentration, find out outlet CH4
The highest experiment condition of content, compares the absorption property of adsorbent, filters out optimal adsorbent.
The beneficial effects of the utility model are: the device evaluation result is reliable, and structure is simple, easy to operate.
Detailed description of the invention
Fig. 1 is a kind of pressure-variable adsorption separation CH provided by the utility model4/N2The performance evaluation of gaseous mixture adsorbent fills
It sets；
Fig. 2 is the structural schematic diagram of another adsorption tower provided by the utility model；
Wherein, 1- argon bottle, 2- methane nitrogen mixture bottle, the first pressure reducing valve of 3-, the second pressure reducing valve of 4-, the second needle-like of 5-
Valve, the second common valve of 6-, 7- third common valve, 10- adsorption tower, the first needle valve of 11-, the first common valve of 12-, 13- first are pressed
Force snesor, the 4th common valve of 14-, the 5th common valve of 15-, the 6th common valve of 16-, 17- third needle valve, 18- mass flow
Meter, 19- second pressure sensor, 21- gas analyzer, 22- vacuum pump, 23-PLC controller, 24- computer, 30- temperature tune
Ganglionic layer, 31- glass fibre cotton insulating layer, 111- argon delivery lines road, 112- mixed gas pipeline road, the upper outlet pipe of 101-,
Outlet pipe under 102-, 230- first gas pipeline, 201- second gas pipeline.
Specific embodiment
With reference to the accompanying drawing, the technical solution of the utility model is described in detail.
As shown in Figure 1, a kind of pressure-variable adsorption provided by the utility model separates CH4/N2The performance of gaseous mixture adsorbent is commented
Valence device, including adsorption tower 10 are provided with filling batch in adsorption tower, for loading adsorbent, the top connection of adsorption tower 10
There is upper outlet pipe 101, the bottom of adsorption tower 10 is connected with lower outlet pipe 102, and it is general to be serially connected with first on upper outlet pipe 101
Port valve 12 and the first needle valve 11；
The device for evaluating performance further includes argon bottle 1 and methane nitrogen mixture bottle 2, and the gas outlet of argon bottle 1 is equipped with
First pressure reducing valve 3, the gas outlet of methane nitrogen mixture bottle 2 are equipped with the second pressure reducing valve 4, and the first pressure reducing valve 3 is defeated by argon gas
Pipeline 111 is sent to be connected to upper outlet pipe 101, the second pressure reducing valve 4 passes through mixed gas pipeline road 112 and lower outlet pipe 102
It is connected to, is serially connected with the second needle valve 5 and the second common valve 6 on argon delivery lines road 111, is concatenated on mixed gas pipeline road 112
There is third common valve 7；
Device for evaluating performance further includes gas analyzer 21, and gas analyzer 21 passes through first gas pipeline 230 and argon gas
Conveyance conduit 111 is connected to upper outlet pipe 101, and the 4th common valve 14, third needle-like are serially connected on first gas pipeline 230
Valve 17 and mass flowmenter 18, gas analyzer 21 and 23 communication connection of PLC controller are also connected on first gas pipeline 230
There are first pressure sensor 13, first pressure sensor 13 and 23 communication connection of PLC controller, PLC controller 23 and computer
24 communication connections；
Device for evaluating performance further includes vacuum pump 22, and vacuum pump 22 passes through second gas pipeline 201 and mixed gas pipeline
Road 112 is connected to lower outlet pipe 102, and the 5th common valve 15 and the 6th common valve 16 are serially connected on second gas pipeline 201, the
Second pressure sensor 19 is also connected on two gas pipelines 201, second pressure sensor 19 and the communication of PLC controller 23 connect
It connects.
As the further improvement of above technical scheme, as shown in Fig. 2, temperature adjusting can also be arranged outside adsorption tower 10
Layer 30.Such as a kind of specific embodiment, temperature regulation layer 30 is the refractory brick being packaged on 10 periphery wall of adsorption tower
Layer, it is provided with resistive heater in fire brick layer, heating temperature adjustment can be carried out to adsorption tower 10.Fire brick layer outsourcing is equipped with glass
Cellucotton insulating layer 31.Pass through the temperature in the adjustable adsorption tower 10 of temperature regulation layer 30, it can test is in different temperatures
Under the conditions of adsorbent absorption property, more fully evaluated to be made to adsorbent absorption property.
Pressure-variable adsorption provided by the utility model separates CH4/N2The operation of the device for evaluating performance of gaseous mixture adsorbent
Journey is as follows:
1, it charges, adsorbent to be tested is loaded into adsorption tower 10, connect experimental provision, confirm that all valves are closed；
2, particular flow rate is set by computer 24, the first pressure reducing valve 3 of rotation opens the first pressure reducing valve 3, opens the later
Two needle valves 5, the second common valve 6 are passed through argon gas into adsorption tower 10, and come regulation experiment institute by adjusting the first pressure reducing valve 3
Need pressure；
3, when the detection for passing through first pressure sensor 13, computer 24 shows that bed layer pressure reaches experiment in adsorption tower 10
After setting pressure, the second needle valve 5, the second common valve 6 are closed, sees whether pressure changes, no longer variation is the gas for showing device
Close property is good, and variation then needs to exclude gas leakage to turnaround of unit.After determining that air-tightness is good, reopen the second needle valve 5,
Second common valve 6, the 4th common valve 14, third needle valve 17 purge a period of time with argon gas, until gas analyzer 21 is shown
Methane concentration can guarantee the accuracy of detection in this way, it is common to close the second needle valve 5, the second common valve the 6, the 4th later to 0
Then valve 14, third needle valve 17 open the first needle valve 11, the first common valve 12, by the gas in adsorption tower 10 along putting, directly
To normal pressure, the first needle valve 11, the first common valve 12 are closed；
4, vacuum pump 22 to be opened, the 5th common valve 15, the 6th common valve 16 is opened, starts to vacuumize, vacuum degree maintains-
0.1MPa (close to 0Mpa, is observed) by second pressure sensor 19, after 20min, closes the 5th common valve 15, the 6th common valve
16, close vacuum pump 22；
5, the second needle valve 5, the second common valve 6 are opened, applying argon gas is charged to required pressure (according to calculating into adsorption tower 10
Machine 24 and the first display jointly of pressure reducing valve 3), after 10 pressure of adsorption tower is stablized, close the second needle valve 5, the second common valve 6；
6, the second pressure reducing valve 4 of methane nitrogen mixture bottle 2 is opened, third common valve 7 is opened, computer 24 shows pressure
It can decline, adjust the second pressure reducing valve 4, be consistent pressure with setting before, then turn on the 4th common valve 14 of valve, third
Needle valve 17, and record the time at the same time, that is, adsorb the time started；
7, when gas analyzer 21 detects that methane concentration is the methane concentration in methane nitrogen mixture bottle 2, stop
Experiment, acquisition vacuumizes and adsorpting data, is calculated, the absorption property of adsorbent is evaluated according to calculated result.
The above description is only the embodiments of the present invention, and therefore it does not limit the scope of the patent of the utility model, all
Equivalent structure transformation made based on the specification and figures of the utility model, it is relevant to be applied directly or indirectly in other
Technical field is included in the scope of patent protection of the utility model.
Claims (4)
1. a kind of pressure-variable adsorption separates CH4/N2The device for evaluating performance of gaseous mixture adsorbent, which is characterized in that the performance is commented
Valence device includes adsorption tower, is used to fill adsorbent in the adsorption tower, is connected with outlet pipe at the top of the adsorption tower,
The bottom of the adsorption tower is connected with lower outlet pipe, is serially connected with the first common valve and the first needle-like on the upper outlet pipe
Valve；
The device for evaluating performance further includes argon bottle and methane nitrogen mixture bottle, and the gas outlet of the argon bottle is equipped with
One pressure reducing valve, the gas outlet of the methane nitrogen mixture bottle are equipped with the second pressure reducing valve, and first pressure reducing valve passes through argon gas
Conveyance conduit is connected to the upper outlet pipe, and second pressure reducing valve passes through mixed gas pipeline road and the lower outlet pipe
It is connected to, is serially connected with the second needle valve and the second common valve on the argon delivery lines road, is concatenated on the mixed gas pipeline road
There is third common valve；
The device for evaluating performance further includes gas analyzer, and the gas analyzer is conveyed by first gas pipeline and argon gas
Pipeline is connected to the upper outlet pipe, is serially connected with the 4th common valve, third needle valve and matter on the first gas pipeline
Flowmeter, the gas analyzer and PLC controller communication connection are measured, is also connected with first pressure on the first gas pipeline
Sensor, the first pressure sensor and the PLC controller communication connection, the PLC controller and computer communication connect
It connects；
The device for evaluating performance further includes vacuum pump, the vacuum pump by second gas pipeline and mixed gas pipeline road and
The lower outlet pipe is connected to, and is serially connected with the 5th common valve and the 6th common valve, second gas on the second gas pipeline
Second pressure sensor, the second pressure sensor and the PLC controller communication connection are also connected on body pipeline.
2. device for evaluating performance according to claim 1, which is characterized in that be provided with temperature adjusting outside the adsorption tower
Layer.
3. device for evaluating performance according to claim 2, which is characterized in that the temperature regulation layer is to be packaged in the suction
Fire brick layer on attached tower periphery wall is provided with resistive heater in the fire brick layer.
4. device for evaluating performance according to claim 3, which is characterized in that also packet is equipped with glass fibers outside the fire brick layer
Vinylon and cotton blend insulating layer.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820707500.2U CN208239396U (en) | 2018-05-14 | 2018-05-14 | Pressure swing adsorption separation CH4/N2Performance evaluation device for adsorbent for mixed gas |
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| CN201820707500.2U CN208239396U (en) | 2018-05-14 | 2018-05-14 | Pressure swing adsorption separation CH4/N2Performance evaluation device for adsorbent for mixed gas |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110124441A (en) * | 2019-05-20 | 2019-08-16 | 中冶长天国际工程有限责任公司 | A kind of judgement of rotary valve gas leakage and processing method and its system |
| CN110124442A (en) * | 2019-05-20 | 2019-08-16 | 中冶长天国际工程有限责任公司 | A kind of judgement of rotary valve gas leakage and processing method and its system |
| CN113433051A (en) * | 2021-06-28 | 2021-09-24 | 中国科学院过程工程研究所 | Negative pressure steam penetration curve analysis device and application method thereof |
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2018
- 2018-05-14 CN CN201820707500.2U patent/CN208239396U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110124441A (en) * | 2019-05-20 | 2019-08-16 | 中冶长天国际工程有限责任公司 | A kind of judgement of rotary valve gas leakage and processing method and its system |
| CN110124442A (en) * | 2019-05-20 | 2019-08-16 | 中冶长天国际工程有限责任公司 | A kind of judgement of rotary valve gas leakage and processing method and its system |
| CN110124441B (en) * | 2019-05-20 | 2021-07-20 | 中冶长天国际工程有限责任公司 | Method and system for treating air leakage of rotary valve |
| CN110124442B (en) * | 2019-05-20 | 2021-07-20 | 中冶长天国际工程有限责任公司 | Method and system for treating air leakage of rotary valve |
| CN113433051A (en) * | 2021-06-28 | 2021-09-24 | 中国科学院过程工程研究所 | Negative pressure steam penetration curve analysis device and application method thereof |
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