CN109283273A - A kind of low-temperature mixed object gas-liquid phase equilibrium experiment test system and its measuring method - Google Patents
A kind of low-temperature mixed object gas-liquid phase equilibrium experiment test system and its measuring method Download PDFInfo
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- CN109283273A CN109283273A CN201811322091.5A CN201811322091A CN109283273A CN 109283273 A CN109283273 A CN 109283273A CN 201811322091 A CN201811322091 A CN 201811322091A CN 109283273 A CN109283273 A CN 109283273A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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Abstract
The present invention relates to the field of test technology that balances each other, and in particular to a kind of low-temperature mixed object gas-liquid phase equilibrium experiment test system and its measuring method；Gas-liquid phase equilibrium experiment test system includes sample storage tank, constant temperature system, equilibrium still, data collection system, component measuring system and vacuum air distribution system；The equilibrium still is located in constant temperature system, and sample storage tank is communicated with equilibrium still by pipeline；Data collection system, component measuring system and vacuum air distribution system connect with equilibrium still respectively；The present invention can solve the technical issues of equilibrium wretched insufficiency in current chemical industry, gas-liquid phase data is sampled and measured simultaneously using two groups of chromatographs, avoid it is single cover when gas chromatograph acquires gas phase and liquid phase sample respectively due to equilibrium deviation caused by time irreversibility, gas-liquid phase equilibrium DATA REASONING precision can be improved.
Description
Technical field
The present invention relates to the field of test technology that balances each other, and in particular to a kind of low-temperature mixed object gas-liquid phase equilibrium experiment test
System and its measuring method.
Background technique
Gas-liquid phase equilibrium data are that chemical field develops the behaviour such as new product, exploitation new process, progress mixture phase transformation separation
One of important foundation data of work.The behaviour such as transformation and design of the separation such as rectifying, condensation and evaporation process device in Chemical Manufacture
It is required to accurate reliable gas-liquid phase equilibrium data.Currently, the experimental determining method of gas-liquid phase equilibrium data mainly has directly
Method and indirect method two major classes, direct method include static method, flow method and round-robin method, indirect method include dew point method, Vesicular protein and
Total pressure method, wherein the static method in direct method is more common.Low-temperature mixed object gas-liquid phase equilibrium test macro is more in the prior art
Using single set gas chromatograph acquisition gas phase and liquid phase sample, time irreversibility is thereby resulted in, to be easy to cause the number that balances each other
There is relatively large deviation according to measurement.
Summary of the invention
The present invention solves the above-mentioned technical problems in the prior art, and it is real to provide a kind of low-temperature mixed object gas-liquid phase equilibrium
Test test system and its measuring method.The present invention is device and the side that static method measures mixture gas-liquid phase equilibrium experimental data
Method.
To solve the above problems, technical scheme is as follows:
Goal of the invention: to overcome the shortcomings of the existing technology, improving measurement accuracy, the present invention is with the burning of low temperature phase change separating oxygen enrichment
CO in flue gas2Research be starting point, it is desirable to provide a kind of more accurate low-temperature mixed object gas-liquid phase equilibrium experiment test system
System and its measuring method.
Technical solution: in order to solve the above technical problems, the present invention adopts the following technical scheme:
A kind of low-temperature mixed object gas-liquid phase equilibrium experiment test system, including sample storage tank, constant temperature system, equilibrium still, number
According to acquisition system, component measuring system and vacuum air distribution system；The equilibrium still is located in constant temperature system, sample storage tank and balance
Kettle is communicated by pipeline；Data collection system, component measuring system and vacuum air distribution system connect with equilibrium still respectively.
Working principle: the present invention measures low-temperature mixed object gas-liquid phase equilibrium system when in use, and equilibrium still is mounted on constant temperature
In system, sample storage tank is filled into equilibrium still under test gas, is that equilibrium still maintains set temperature by constant temperature system, by counting
According to data such as acquisition system acquisition pressure, temperature, the formation of gas liquid film and mobile phenomenons, acquired by component measuring system
Gas-liquid phase component in equilibrium still carries out gas-liquid phase component using two groups of gas chromatographs in sample acquisition with measurement process
Sample, measure simultaneously simultaneously, avoid it is single cover gas chromatograph acquire time irreversibility caused by gas phase and liquid phase sample respectively and
The deviation of caused equilibrium carries out vacuum pumping to equilibrium still by vacuum air distribution system.
Preferably, the constant temperature system includes constant temperature gas bath device, Dewar container for liquefied nitrogen bottle, flow control valve, Self-operated pressure
Regulating valve, refrigeration machine, cooling coil, temperature controller, electric heater, the first temperature sensor and vacuum insulation cover；Vacuum is exhausted
Heat is located at constant temperature gas bath device periphery, and Dewar container for liquefied nitrogen bottle, refrigeration machine and temperature controller are located at outside constant temperature gas bath device, balance
Kettle, cooling coil, electric heater and the first temperature sensor are each provided in constant temperature gas bath device, and cooling coil stretches out constant temperature gas bath
Device connects with refrigeration machine, and electric heater and the first temperature sensor stretch out constant temperature gas bath device and connect with temperature controller, liquid
Nitrogen Dewar bottle is communicated with constant temperature gas bath device by pipeline, and flow control valve is located between Dewar container for liquefied nitrogen bottle and constant temperature gas bath device
Pipeline on；Self-contained pressure regulator is arranged in constant temperature gas bath bottom of device；Equilibrium still is mounted on the perseverance in vacuum insulation cover
In wet bath apparatus, the cooling capacity of constant temperature is maintained to be mentioned with Dewar container for liquefied nitrogen bottle by flow control valve by refrigeration machine by cooling coil
For refrigeration machine provides cooling capacity when carrying out the experiment of 230K~310K gas-liquid phase equilibrium for system, and combines the micro- compensation of electric heater
Control the temperature in gas bath；And Dewar container for liquefied nitrogen bottle provides cooling capacity when 216~230K gas-liquid phase equilibrium is tested for system, passes through tune
It saves constant flow valve aperture and controls liquid nitrogen consumption, and combine the temperature in the micro- compensation control gas bath of electric heater, Self-operated pressure
Regulating valve is for maintaining constant temperature gas bath device internal pressure in safe range.
Preferably, the data collection system includes computer, data collecting instrument, pressure sensor, second temperature sensing
Device, the first video camera and the second video camera, pressure sensor and second temperature sensor pass through data collecting instrument respectively and calculate
Machine connects, and the first video camera and the second video camera connect with computer；Pressure sensor and second temperature sensor respectively from
It is protruded into equilibrium still at the top of equilibrium still；At the top of equilibrium still and at the top of constant temperature gas bath device corresponding position be equipped with first can electric heating it is anti-
Mist form, equilibrium still side wall and constant temperature gas bath device side wall corresponding position be equipped with second can electric heating anti-fog form, first camera shooting
Instrument is located at outside constant temperature gas bath device corresponding first can be at electric heating anti-fog form, and the second video camera is located at right outside constant temperature gas bath device
Answering second can be at electric heating anti-fog form；First, second video camera can by first, second can electric heating anti-fog form observe gas
Liquid interface, which is formed, can obtain the temperature of mixture in equilibrium still, pressure sensor measurement with mobile phenomenon, second temperature sensor
Pressure in equilibrium still, computer capacity record the measurement and observation data of all acquisitions.
Preferably, above-mentioned second temperature sensor is high-precision platinum resistor thermometer, and pressure sensor is that high-precision is absolute
Pressure sensor.
Preferably, the component measuring system include the first gas chromatograph, the second gas chromatograph, gas phase acquisition valve,
Liquid phase acquires valve and gasification vessel；First gas chromatograph, the second gas chromatograph connect with computer respectively, the first gas phase color
Spectrometer is communicated by pipeline with equilibrium still bottom, and gasification vessel is located at the pipeline between the first gas chromatograph and equilibrium still bottom
On, liquid phase acquisition valve is located on the pipeline between gasification vessel and the first gas chromatograph；Second gas chromatograph passes through pipeline
It is communicated with equilibrium still top, gas phase acquisition valve is located on the pipeline between the second gas chromatograph and equilibrium still.Using first,
Two liang of set gas chromatographs acquire trace gas liquid phase fluid sample simultaneously and carry out the analysis of gas/liquid phase component, can reach in equilibrium still
To after balance, single gas chromatograph that covers is avoided to acquire gas phase and liquid phase sample respectively due to balancing each other caused by time irreversibility
Data deviation.
Preferably, the vacuum air distribution system includes the first vacuum pump, the second vacuum pump and third vacuum pump；First vacuum
Pump connects with the pipeline between sample storage tank and equilibrium still, and the second vacuum pump connects with vacuum insulation cover, third vacuum pump difference
Pipeline, gas phase acquisition valve between gasification vessel and equilibrium still and the pipeline between equilibrium still connect；It can be measurement liquid phase
Balance system provides initial vacuum environment.
Preferably, it is equipped with blower in the constant temperature gas bath device, gas can be promoted to recycle, is recycled by gas and guarantees constant temperature
Temperature Quick uniform in gas bath device.
Preferably, bottom and constant temperature gas bath bottom of device are equipped with non-contact type magnetic blender in the equilibrium still, non-to connect
Touch magnetic stirrer part is located at bottom in equilibrium still, and control section is located at the constant temperature gas bath device of corresponding mixing part
Bottom；It is stirred using non-contact type magnetic, Mass and heat transfer in liquid phase can be promoted, accelerate to realize balancing each other inside equilibrium still
State, and it is avoided that directly influence of the contact agitating mode to the high-pressure sealed performance of equilibrium still.
Preferably, the sample storage tank is 2 or more, and each sample tank bottom is equipped with electronic balance, can be quantitative
The quality of control injection sample.
A kind of low-temperature mixed object gas-liquid phase equilibrium experimental determining method, includes the following steps:
(1) system air-leakage test: before experimental implementation starts, should carry out air-leakage test to experimental system first,
After determining that system air-tightness is good, the first vacuum pump and the second vacuum pump are opened, vacuum pumping is carried out to system；
(2) equilibrium still cleans: system is passed through after vacuum pumping, and the high boiling CO of 0.1kg-0.2kg is filled with2, stand
After a period of time, gas in system is discharged and carries out vacuum pumping again；After repeated multiple times, it is ensured that the impurity in system
Gas excludes clean, influence of the impurity to experimentation and result in maximum reduction system by sufficient displacement；
(3) laboratory sample is equipped with and fills: system is by being cleaned multiple times after operation, according to experiment purpose and requirement, note
Record it is each needed for sample storage tank initial mass, use single-stage vapor compression refrigeration unit for equilibrium still and constant temperature gas bath device into
Row pre-cooling, after being pre-chilled to 230K, equilibrium still continues cooling and constant temperature is realized by liquid nitrogen spraying (due to the filling of liquid nitrogen, perseverance
It will appear the security risk of hypertonia inside wet bath apparatus, constant temperature gas bath dress need to be set on self-contained pressure regulator door
Safe pressure value is set, after pressure reaches setting value, valve automatically opens pressure release, it is ensured that constant temperature gas bath device internal pressure is being pacified
Gamut), counter sample storage tank valve and equilibrium still air intake valve in opening conduits carry out sample filling operation to system, are
Ensure the accurate of charging amount, valve opening is answered first big after small；
(4) experimental temperature is set: after the completion of laboratory sample filling in system, on temperature controller needed for setting experiment
Temperature condition, opens blower and non-contact type magnetic blender, acceleration system Mass and heat transfer, waiting system temperature reach setting
Value；
(5) record temperature, pressure data: when system reach set temperature and stablize ± 0.01K, pressure stablize ±
After 0.001MPa two hours, system reaches the state of balancing each other, and records temperature, pressure data by data collection system；
(6) the first gas chromatograph, the second gas chromatograph and respective valves, adjustment first record group divided data: are opened
Gas chromatograph, the second gas chromatograph relevant parameter, acquisition gaseous component are analyzed；Adjust liquid phase sampler, collection liquid
Phase component is analyzed, and liquid phase acquires simultaneously, is measured simultaneously, and gas-liquid component related data is recorded；
(7) change temperature: repeating step (4)-(6) relevant operation, the experiment to balance each other under new test temperature
Operation.
(8) change component: the experiment component for changing the ratio of component or more renewing carries out down since experimental procedure (2)
A kind of experimental implementation of component.
Compared with the existing technology, advantages of the present invention is as follows,
The present invention can be used for the measurement of any object system gas-liquid phase equilibrium data, can be used in the survey of most of gas-liquid phase equilibrium
Experimental place is measured, measurement and the collecting work of gas-liquid phase equilibrium data can be carried out within the scope of biggish temperature and pressure.It adopts
Sampled and measured simultaneously with two groups of chromatographs, avoid it is single cover gas chromatograph acquire respectively gas phase and liquid phase sample due to when
Between it is asynchronous caused by equilibrium deviation；It is stirred using non-contact type magnetic, caloic in liquid phase can be promoted to pass
It passs, accelerates to realize the state that balances each other inside equilibrium still, and be avoided that directly contact agitating mode property high-pressure sealed to equilibrium still
The influence of energy.The invention can solve the technical issues of equilibrium wretched insufficiency in current chemical industry, when raising balances each other
Liquid phase DATA REASONING precision.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
In figure: 1 is electronic balance, and 2 be sample storage tank, and 3 be the first vacuum pump, and 4 be blower, and 5 be pressure sensor, and 6 are
First temperature sensor, 7 be the first video camera, and 8 be data collecting instrument, and 9 be computer, and 10 be the second video camera, and 11 be second
Vacuum pump, 12 be the first gas chromatograph, and 13 acquire valve for gas phase, and 14 acquire valve for liquid phase, and 15 be gasification vessel, and 16 be magnetic force
Blender, 17 for first can electric heating anti-fog form, 18 be equilibrium still, 19 for first can electric heating anti-fog form, 20 be cooling
Coil pipe, 21 be refrigeration machine, and 22 be electric heater, and 23 be temperature controller, and 24 be second temperature sensor, and 25 be vacuum insulation
Cover, 26 be constant temperature gas bath device, and 27 be third vacuum pump, and 28 be flow control valve, and 29 be Dewar container for liquefied nitrogen bottle, and 30 be the second gas phase
Chromatograph, 31 be self-contained pressure regulator.
Specific embodiment
Embodiment 1:
As shown in Figure 1, a kind of low-temperature mixed object gas-liquid phase equilibrium experiment test system, including sample storage tank 2, constant temperature system
System, equilibrium still 18, data collection system, component measuring system and vacuum air distribution system；The equilibrium still 18 is located at constant temperature system
Interior, sample storage tank 2 is communicated with equilibrium still 18 by pipeline；Data collection system, component measuring system and vacuum air distribution system point
Do not connect with equilibrium still 18；Constant temperature system includes constant temperature gas bath device 26, Dewar container for liquefied nitrogen bottle 29, flow control valve 28, refrigeration machine
21, cooling coil 20, temperature controller 23, electric heater 22, the first temperature sensor 6, vacuum insulation cover 25 and self-operated type pressure
Force regulating valve 31；Vacuum insulation cover 25 is located at 26 periphery of constant temperature gas bath device, Dewar container for liquefied nitrogen bottle 29, refrigeration machine 21 and temperature control
Device 23 is located at outside constant temperature gas bath device 26, and equilibrium still 18, cooling coil 20, electric heater 22 and the first temperature sensor 6 are all provided with
In constant temperature gas bath device 26, cooling coil 20 stretches out constant temperature gas bath device 26 and connects with refrigeration machine 21, electric heater 22 and the
One temperature sensor 6 stretches out constant temperature gas bath device 26 and connects with temperature controller 23, Dewar container for liquefied nitrogen bottle 29 and constant temperature gas bath device
26 are communicated by pipeline, and flow control valve 28 is located on the pipeline between Dewar container for liquefied nitrogen bottle 29 and constant temperature gas bath device 26；It relies on oneself
Formula pressure-regulating valve 31 is arranged in 26 bottom of constant temperature gas bath device；Data collection system includes computer 9, data collecting instrument 8, pressure
Force snesor 5, second temperature sensor 24, the first video camera 7 and the second video camera 10, pressure sensor 5 and second temperature pass
Sensor 24 is connected with computer 9 by data collecting instrument 8 respectively, the first video camera 7 and the second video camera 10 with 9 phase of computer
It connects；Pressure sensor 5 and second temperature sensor 24 protrude into equilibrium still 18 at the top of equilibrium still 18 respectively；18 top of equilibrium still
Being equipped with first with 26 top corresponding position of constant temperature gas bath device can electric heating anti-fog form 19,18 side wall of equilibrium still and constant temperature gas bath
26 side wall corresponding position of device be equipped with second can electric heating anti-fog form 17, the first video camera 7 is located at outside constant temperature gas bath device 26
Corresponding first can be at electric heating anti-fog form 19, and the second video camera 10 is located at outside constant temperature gas bath device 26 corresponding second can electric heating
At antifog form 17；Component measuring system include the first gas chromatograph 12, the second gas chromatograph 30, gas phase acquisition valve 13,
Liquid phase acquires valve 14 and gasification vessel 15；First gas chromatograph 12, the second gas chromatograph 30 connect with computer 9 respectively,
First gas chromatograph 12 is communicated by pipeline with 18 bottom of equilibrium still, and gasification vessel 15 is located at the first gas chromatograph 12 and puts down
On pipeline between weighing apparatus 18 bottom of kettle, liquid phase acquisition valve 14 is located at the pipeline between gasification vessel 15 and the first gas chromatograph 12
On；Second gas chromatograph 30 is communicated by pipeline with 18 top of equilibrium still, and gas phase acquisition valve 13 is located at the second gas chromatograph
On pipeline between 30 and equilibrium still 18；Vacuum air distribution system includes the first vacuum pump 3, the second vacuum pump 11 and third vacuum pump
27；First vacuum pump 3 connects with the pipeline between sample storage tank 2 and equilibrium still 18, the second vacuum pump 11 and constant temperature gas bath device
26 sidewall bottoms connect, and the pipeline between gasification vessel 15 and equilibrium still 18, gas phase acquire valve 13 to third vacuum pump 27 respectively
Pipeline between equilibrium still 18 connects；Blower 4 is equipped in constant temperature gas bath device 26；Bottom and constant temperature gas bath in equilibrium still 18
26 bottom of device is equipped with non-contact type magnetic blender 16, and the mixing part of non-contact type magnetic blender 16 is located at equilibrium still 18
Interior bottom, the control section of non-contact type magnetic blender 16 are located at 26 bottom of constant temperature gas bath device of corresponding mixing part；Sample
Storage tank 2 is 2 or more, and each 2 bottom of sample storage tank is equipped with electronic balance 1.
Embodiment 2:
The low-temperature mixed object gas-liquid phase equilibrium experiment test system of embodiment 1 is used to obtain gas-liquid phase equilibrium data, with
Lower abbreviation system
Low-temperature mixed object gas-liquid phase equilibrium experimental determining method, includes the following steps:
(1) system air-leakage test: before experimental implementation starts, should carry out air-leakage test to experimental system first,
After determining that system air-tightness is good, the first vacuum pump 3 and the second vacuum pump 11 are opened, vacuum pumping is carried out to system；
(2) equilibrium still cleans: system is passed through after vacuum pumping, and the high boiling CO of 0.1kg-0.2kg is filled with2, stand
After a period of time, gas in system is discharged and carries out vacuum pumping again；After repeated multiple times, it is ensured that the impurity in system
Gas excludes clean, influence of the impurity to experimentation and result in maximum reduction system by sufficient displacement；
(3) laboratory sample is equipped with and fills: system is by being cleaned multiple times after operation, according to experiment purpose and requirement, note
The initial mass for recording each required sample storage tank, opens constant temperature system, equilibrium still 18 and constant temperature gas bath device 26 is pre-chilled
Operation, after a period of time, respective valves in opening conduits carry out sample filling operation to system, to ensure the accurate of charging amount,
Valve opening is answered first big after small；
(4) experimental temperature is set: after the completion of laboratory sample filling in system, the setting experiment institute on temperature controller 23
Temperature condition is needed, blower 4 is opened and non-contact type magnetic blender 16, acceleration system Mass and heat transfer, waiting system temperature reaches
Setting value；
(5) temperature, pressure data are recorded: when system temperature is stable small in ± 0.001MPa two in ± 0.01K, pressure stabilization
Shi Hou, it is believed that system reaches the state of balancing each other, and records temperature, pressure data by data collection system；
(6) the first gas chromatograph 12, the second gas chromatograph 30 and respective valves, adjustment record group divided data: are opened
First gas chromatograph 12,30 relevant parameter of the second gas chromatograph, acquisition gaseous component are analyzed；Adjust liquid phase sampling
Device, acquisition liquid phase component are analyzed, and liquid phase acquires simultaneously, measures simultaneously, record gas-liquid component related data；
(7) change temperature: repeating step (4)-(6) relevant operation, the experiment to balance each other under new test temperature
Operation；
(8) change component: the experiment component for changing the ratio of component or more renewing carries out down since experimental procedure (2)
A kind of experimental implementation of component.
The present embodiment is to measure CO2-N2-O2The gas-liquid phase equilibrium data instance of ternary mixture, injects in equilibrium still 18
Before working medium, first equilibrium still 18 is vacuumized and with higher boiling CO2Cleaning, it is miscellaneous without other to be repeated twice the above guarantee equilibrium still 18
Matter；Gas-liquid phase equilibrium system call interception will entirely be measured to preset experiment temperature by being then turned on refrigeration machine 21 and temperature controller 23
Sample gas is introduced equilibrium still 18 by degree, using the quality of electronic balance 1 and quantitative valve control injection sample, is first filled with height
Boiling point CO2, low boiling point N is quantitatively filled with after reaching saturation state according to temperature and pressure judgement2And O2；It is existing to observe gas-liquid phase equilibrium
As to temperature, pressure (temperature ± 0.01K；Pressure ± 0.001MPa) stablize two hours after, pass through data collection system record pressure
Power, temperature acquire gas/liquid phase component data and other related datas by component measuring system.
The unmentioned technology of the present invention is referring to the prior art.
Although the application is to measure CO2-N2-O2Ternary mixture gas-liquid phase equilibrium is starting point, but in practical application not
It is confined to this, however, it would be possible to the measurement for any object system gas-liquid phase equilibrium data.
To illustrate that above-described embodiment is only presently preferred embodiments of the present invention, there is no guarantors for the purpose of limiting the invention
Range is protected, the equivalent substitution or substitution made on the basis of the above all belongs to the scope of protection of the present invention.
Claims (9)
1. a kind of low-temperature mixed object gas-liquid phase equilibrium experiment test system, which is characterized in that including sample storage tank, constant temperature system,
Equilibrium still, data collection system, component measuring system and vacuum air distribution system；The equilibrium still is located in constant temperature system, sample
Storage tank is communicated with equilibrium still by pipeline；Data collection system, component measuring system and vacuum air distribution system respectively with equilibrium still
Connect.
2. low-temperature mixed object gas-liquid phase equilibrium experiment test system according to claim 1, which is characterized in that the perseverance
Warm system include constant temperature gas bath device, Dewar container for liquefied nitrogen bottle, flow control valve, refrigeration machine, cooling coil, temperature controller, electricity plus
Hot device, self-contained pressure regulator, the first temperature sensor and vacuum insulation cover；Vacuum insulation is located at outside constant temperature gas bath device
Week, Dewar container for liquefied nitrogen bottle, refrigeration machine and temperature controller are located at outside constant temperature gas bath device, equilibrium still, cooling coil, electric heater and
First temperature sensor is each provided in constant temperature gas bath device, and cooling coil stretches out constant temperature gas bath device and connects with refrigeration machine, and electricity adds
Hot device and the first temperature sensor stretch out constant temperature gas bath device and connect with temperature controller, Dewar container for liquefied nitrogen bottle and constant temperature gas bath device
It is communicated by pipeline, flow control valve is located on the pipeline between Dewar container for liquefied nitrogen bottle and constant temperature gas bath device, Self-operated pressure tune
It saves valve to be arranged in constant temperature gas bath bottom of device, blower is in heat screen.
3. low-temperature mixed object gas-liquid phase equilibrium experiment test system according to claim 2, which is characterized in that the number
It include that computer, data collecting instrument, pressure sensor, second temperature sensor, the first video camera and second are taken the photograph according to acquisition system
As instrument, pressure sensor and second temperature sensor pass through data collecting instrument respectively and connect with computer, the first video camera and the
Two video cameras connect with computer；Pressure sensor and second temperature sensor protrude into equilibrium still at the top of equilibrium still respectively
It is interior；At the top of equilibrium still and at the top of constant temperature gas bath device corresponding position be equipped with first can electric heating anti-fog form, equilibrium still side wall and
Constant temperature gas bath device side wall corresponding position be equipped with second can electric heating anti-fog form, the first video camera is located at outside constant temperature gas bath device
Corresponding first can be at electric heating anti-fog form, and the second video camera is located at outside constant temperature gas bath device corresponding second can electric heating anti-fog view
At window.
4. low-temperature mixed object gas-liquid phase equilibrium experiment test system according to claim 3, which is characterized in that described group
Dividing measuring system includes the first gas chromatograph, the second gas chromatograph, gas phase acquisition valve, liquid phase acquisition valve and gasification vessel；
First gas chromatograph, the second gas chromatograph connect with computer respectively, and the first gas chromatograph passes through pipeline and equilibrium still
Bottom communicates, and gasification vessel is located on the pipeline between the first gas chromatograph and equilibrium still bottom, and liquid phase acquisition valve is located at gas
Change on the pipeline between container and the first gas chromatograph；Second gas chromatograph is communicated by pipeline with equilibrium still top, gas
Mutually acquisition valve is located on the pipeline between the second gas chromatograph and equilibrium still.
5. low-temperature mixed object gas-liquid phase equilibrium experiment test system according to claim 4, which is characterized in that described true
Empty air distribution system includes the first vacuum pump, the second vacuum pump and third vacuum pump；First vacuum pump and sample storage tank and equilibrium still
Between pipeline connect, the second vacuum pump connects with vacuum insulation cover, third vacuum pump respectively with gasification vessel and equilibrium still it
Between pipeline, gas phase acquisition valve and equilibrium still between pipeline connect.
6. according to the described in any item low-temperature mixed object gas-liquid phase equilibrium experiment test systems of claims 2-5, feature exists
In bottom and constant temperature gas bath bottom of device in the equilibrium still are equipped with non-contact type magnetic blender, and non-contact type magnetic stirs
The mixing part for mixing device is located at bottom in equilibrium still, and the control section of non-contact type magnetic blender is located at corresponding mixing part
Constant temperature gas bath bottom of device.
7. according to the described in any item low-temperature mixed object gas-liquid phase equilibrium experiment test systems of claims 1-5, feature exists
In the sample storage tank is 2 or more, and each sample tank bottom is equipped with electronic balance.
8. a kind of low-temperature mixed object gas-liquid phase equilibrium experimental determining method, which comprises the steps of:
Step 1 fills the equilibrium still progress sample of low-temperature mixed object gas-liquid phase equilibrium experiment test system described in claim 5
Note；
Step 2 is that equilibrium still maintains set temperature by the constant temperature system；
Step 3 records temperature, pressure data by the data collection system；
Step 4 acquires gas-liquid phase component in equilibrium still by the component measuring system.
9. low-temperature mixed object gas-liquid phase equilibrium experimental determining method according to claim 8, which is characterized in that step 1
Air-leakage test and equilibrium still cleaning are carried out before starting.
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|---|---|---|---|---|
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| CN113155886A (en) * | 2021-03-31 | 2021-07-23 | 珠海格力电器股份有限公司 | Visual experiment device and measurement method for determining VLE |
| CN113177951A (en) * | 2021-04-23 | 2021-07-27 | 昆明理工大学 | Device and method for non-contact measurement of content of incompatible gas-liquid two-phase mixed gas |
| CN113624570A (en) * | 2021-08-06 | 2021-11-09 | 清华大学 | Vapor-liquid phase equilibrium device and method for analyzing HF in hydrofluorocarbon |
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| CN115267026A (en) * | 2022-08-25 | 2022-11-01 | 南京工业大学 | High-pressure low-temperature phase balance measuring device |
| CN116223556A (en) * | 2023-02-16 | 2023-06-06 | 北京中科富海低温科技有限公司 | Binary gas-liquid phase balance test system and binary gas-liquid phase balance test method |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205146108U (en) * | 2015-10-21 | 2016-04-13 | 中国石油化工股份有限公司 | Quick gas -liquid looks balancing unit under high pressure condition |
| CN107202815A (en) * | 2017-05-11 | 2017-09-26 | 南京工业大学 | A kind of continuous flowing type high temperature and high voltage experimental device |
| CN107727805A (en) * | 2017-10-18 | 2018-02-23 | 中石化炼化工程（集团）股份有限公司 | HTHP gas-liquid phase equilibrium test device and method |
-
2018
- 2018-11-08 CN CN201811322091.5A patent/CN109283273A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN205146108U (en) * | 2015-10-21 | 2016-04-13 | 中国石油化工股份有限公司 | Quick gas -liquid looks balancing unit under high pressure condition |
| CN107202815A (en) * | 2017-05-11 | 2017-09-26 | 南京工业大学 | A kind of continuous flowing type high temperature and high voltage experimental device |
| CN107727805A (en) * | 2017-10-18 | 2018-02-23 | 中石化炼化工程（集团）股份有限公司 | HTHP gas-liquid phase equilibrium test device and method |
Non-Patent Citations (6)
| Title |
|---|
| WOLFGANG DORAU ET AL.: "An apparatus for the investigation of low-temperature, high-pressure, vapor—liquid and vapor—liquid—liquid equilibria", 《FLUID PHASE EQUILIBRIA》 * |
| 余国保等: "新型低温气液相平衡实验系统调试与验证", 《低温与超导》 * |
| 冯耀声，孙更生，侯虞钧: "汽相循环法测定CO_2－C_2H_5OH－H_2O－夹带剂体系相平衡 ", 《高校化学工程学报》 * |
| 张宇等: "低温汽液相平衡实验系统的研制与验证 ", 《工程热物理学报》 * |
| 张宇等: "用于汽液相平衡实验的电磁循环泵的设计与测试 ", 《流体机械》 * |
| 韩晓红等: "高精度深低温(80～180K)汽液相平衡实验装置研制 ", 《高校化学工程学报》 * |
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110715950A (en) * | 2019-09-27 | 2020-01-21 | 中国科学院理化技术研究所 | Volume-variable fluid thermophysical property measuring device |
| CN110715950B (en) * | 2019-09-27 | 2022-11-22 | 中国科学院理化技术研究所 | Volume-variable fluid thermophysical property measuring device |
| CN113155886A (en) * | 2021-03-31 | 2021-07-23 | 珠海格力电器股份有限公司 | Visual experiment device and measurement method for determining VLE |
| CN113177951A (en) * | 2021-04-23 | 2021-07-27 | 昆明理工大学 | Device and method for non-contact measurement of content of incompatible gas-liquid two-phase mixed gas |
| CN113177951B (en) * | 2021-04-23 | 2022-06-10 | 昆明理工大学 | Device and method for non-contact measurement of content of incompatible gas-liquid two-phase mixed gas |
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| CN115267026A (en) * | 2022-08-25 | 2022-11-01 | 南京工业大学 | High-pressure low-temperature phase balance measuring device |
| CN116223556A (en) * | 2023-02-16 | 2023-06-06 | 北京中科富海低温科技有限公司 | Binary gas-liquid phase balance test system and binary gas-liquid phase balance test method |
| CN116223556B (en) * | 2023-02-16 | 2023-07-28 | 北京中科富海低温科技有限公司 | Binary gas-liquid phase balance test system and binary gas-liquid phase balance test method |
| CN116626246A (en) * | 2023-07-24 | 2023-08-22 | 四川空分设备(集团)有限责任公司 | Low-temperature adsorption testing device and testing method thereof |
| CN116626246B (en) * | 2023-07-24 | 2023-10-20 | 四川空分设备(集团)有限责任公司 | Low-temperature adsorption testing device and testing method thereof |
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