CN203164076U - Device for determining gas-liquid chemical reaction rate based on volumetric method - Google Patents
Device for determining gas-liquid chemical reaction rate based on volumetric method Download PDFInfo
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- CN203164076U CN203164076U CN 201320172106 CN201320172106U CN203164076U CN 203164076 U CN203164076 U CN 203164076U CN 201320172106 CN201320172106 CN 201320172106 CN 201320172106 U CN201320172106 U CN 201320172106U CN 203164076 U CN203164076 U CN 203164076U
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Abstract
The utility model discloses a device for determining a gas-liquid chemical reaction rate based on a volumetric method, which belongs to the field of chemical reaction engineering. The device comprises a gas source system, a vacuum system, a gas metering system, a gas-liquid reaction system, a heating system, a stirring system, a cooling system and a data acquisition system, wherein a solution and a magnetic stirrer are arranged inside a gas-liquid reaction chamber through a liquid inlet; a metering cavity and the gas-liquid reaction chamber are vacuumized by a vacuum pump to remove residual gas; a vacuum electromagnetic valve is closed, gas with appointed pressure is fed into the metering cavity;, and the mole number is calculated; a gas source electromagnetic valve is closed, and then the solution is subjected to temperature control and stirred; a voltage-sharing electromagnetic valve is opened when the reaction condition is achieved; reaction gas is injected into the gas-liquid reaction chamber; the voltage-sharing electromagnetic valve is closed when the pressure is balanced; and therefore, the chemical reaction rate is obtained by monitoring the change along with time of the gas pressure inside the gas-liquid reaction chamber. The device disclosed by the utility model is automatic in a test process, high in temperature control and measurement accuracy, and convenient to operate.
Description
Technical field
The utility model belongs to the Chemical Reaction Engineering field, relates to a kind of device based on volumetric determination gas-liquid chemical reaction rate, the rate constant when being suitable for measuring gas and liquid generation chemical reaction, and obtain corresponding rate equation.
Background technology
Gas liquid reaction is typical process control link in the Chemical Reaction Engineering, plays an important role in fields such as industry, medical treatment, teaching, scientific researches.As, adopt wet method to remove SO in generating plant or the kiln tail gas
2, absorb with copper ammon solution in the ammonia synthesizing industry and adopt alkaline solution to absorb CO in CO, the industrial methane
2, adopt in the copper gas washing NaOH solution to absorb remaining CO
2, adopt in the chemical analysis copper ammon solution to demarcate to adopt silver ammino solution to detect trace amounts of CO etc. in oxygen concentration, the medical oxygen.The speed of reaction rate has determined the input ability of raw material, the fan-out capability of product and the size of reaction vessel, directly influence one-time investment and the operation expense of enterprise, reaction conditions has great importance for cutting down the consumption of energy, raise the efficiency and increasing profit efficiently, therefore, the speed of mensuration chemical reaction and acquisition respective rate equation are the keys that addresses the above problem.
Usually, the concentration of liquid adopts titrimetry, chromatography or pH value method etc. to carry out labor measurement in the gas liquid reaction, and data are obtained hysteresis, can't obtain the instantaneous value of chemical reaction rate, have influenced the measurement precision of data; And gas is a kind of compressible medium, and no matter as reactant or product, its volume or pressure all can carry out tight tracking to chemical reaction process with the transient change that takes place of reaction, have reflected the real time status of chemical reaction.In addition, for the high-temperature high-voltage reaction condition, it is more difficult to get the liquid analytic process, concrete condition when measuring liquid property at normal temperatures and pressures and can't reflect high-temperature high-pressure state, and the variation of gas property at this moment is sensitiveer, and the physical parameter of measurement gas has enlarged the measurement range of chemical reaction rate.
At present, measure the report of chemical reaction rate and be more common in education experiment, as, " improvement of a measurement zinc and sulfuric acid reaction speed experimental provision " literary composition (experimental teaching and instrument, 2010, (9): 30) adopt syringe metering gas volume " ' different catalysts is to the influence of hydrogen peroxide dissociation reaction speed ' experimental provision design with a probe into " literary composition (Cangzhou teacher training school journal, 2008,24(3): 42) adopt soap bubble flowmeter to measure the volume that produces gas; " hydrochloric acid and acetic acid reaction speed to when dissociation equilibrium move experimental provision " literary composition (instruments used for education and experiment, 2004, (4): 31-32) adopt graduated cylinder to measure the volume that produces gas.These methods belong to constant-voltage method, and by measurement gas volume change chemistry reaction rate, its weak point is comparatively obvious.At first, syringe, soap bubble flowmeter or graduated cylinder etc. can't be realized the automatic measurement to volume, must manual operation and read registration, increased the error of indication and subjectivity; Secondly, in the gasmetry process, because the shattered to pieces error that causes of residual gas, frictional resistance or soap bubble is difficult to eliminate in the container; Again, glass container is all adopted in this class experiment, can't be applicable to high pressure or pyroreaction condition; At last, for complex conditions reaction rate measuring process, owing to can't realize robotization, increased labour cost, be difficult to raise the efficiency.
Summary of the invention
The purpose of this utility model is to develop a kind of device based on volumetric determination gas-liquid chemical reaction rate, guaranteeing to carry out real time dynamic measurement to gas pressure intensity by high-precision pressure sensor under the gas volume permanence condition by constant volume transformation mode, avoided traditional constant-voltage method measurement volumes can't realize robotization, increased labour cost, the drawback that is difficult to raise the efficiency has real-time and reliability.
A kind of device based on volumetric determination gas-liquid chemical reaction rate, be to utilize the constant volume method to adopt buffer container to measure the mode that air inlet or substep metering give vent to anger step by step reactant or product are controlled, calculate the consumption of reactant or the output speed of product by the variation of gas pressure intensity in the monitoring chemical reaction in good time, thereby calculate rate constant and the rate equation of chemical reaction process.This device is made up of air supply system, vacuum system, gas metering system, gas liquid reaction system, heating system, stirring system, cooling system and data acquisition system (DAS) eight parts.
Wherein said air supply system is made up of source of the gas gas cylinder to be measured, reduction valve, source of the gas solenoid valve and source of the gas joint flange.Source of the gas gas cylinder to be measured is used for holding the gas of participating in chemical reaction, because storage pressure is higher, needs through reduction valve pressure to be reduced to chemical reaction and operates required pressure, and reduction valve links to each other with source of the gas gas cylinder to be measured by the high pressure sealing screw thread.The source of the gas solenoid valve is opened or closed by programmed control, is used for control and enters measurement chamber through the source of the gas to be measured that reduces pressure, and the source of the gas solenoid valve links to each other with the source of the gas joint flange with reduction valve by pipeline, and the source of the gas joint flange is used for connecting air supply system and measurement chamber.
Described vacuum system is made up of vacuum joint flange, vacuum solenoid and vacuum pump.Vacuum system is joined by vacuum joint flange and measurement chamber, is used for measurement chamber is vacuumized, and gets rid of the influence of residual gas.Vacuum pump, vacuum solenoid and vacuum joint flange link to each other by pipeline, and vacuum solenoid is opened or closed by programmed control.
Described gas metering system is by measurement chamber, measurement chamber thermocouple sheath, measurement chamber thermopair, all press joint flange, measurement chamber pressure measurement joint flange and measurement chamber pressure transducer to form.The measurement chamber thermopair places in the measurement chamber thermocouple sheath, and the measurement chamber thermocouple sheath stretches in the measurement chamber, links together by welding technology and measurement chamber, and the measurement chamber thermopair is used for measuring the temperature of metering intracavity gas.The measurement chamber pressure transducer links to each other with measurement chamber by measurement chamber pressure measurement joint flange, is used for measuring the pressure of metering intracavity gas.Measurement chamber links to each other with equal pressure electromagnetic valve by all pressing joint flange.
Described gas liquid reaction system is made up of equal pressure electromagnetic valve, reaction chamber pressure transducer, gas liquid reaction chamber, inlet, gas thermometric idol sleeve pipe, gas temperature thermocouple, liquid thermometric idol sleeve pipe and liquid temperature thermocouple; The gas temperature thermocouple places in the gas thermometric idol sleeve pipe, and gas thermometric idol sleeve pipe inserts top, gas liquid reaction chamber, links together by welding technology and gas liquid reaction chamber, and the gas temperature thermocouple is used for measuring the temperature of gas liquid reaction chamber upper space gas; The liquid temperature thermocouple places in the liquid thermometric idol sleeve pipe, liquid thermometric idol sleeve pipe inserts bottom, gas liquid reaction chamber, but be higher than the magnetic stir bar height, link together by welding technology and gas liquid reaction chamber, the liquid temperature thermocouple is used for measuring the temperature of gas liquid reaction chamber lower space liquid; Inlet is the pipeline that has square nut, links together by welding technology with the gas liquid reaction chamber, is used for putting into or pour out liquid, puts into or pour out magnetic stir bar, during work, by supporting bolt seal; The reaction chamber pressure transducer is installed in Y shape cooling worm top by screw thread, be used for measuring the pressure of gas liquid reaction intracavity gas, when the gas liquid reaction temperature is higher, by the heat eliminating medium in the cooling jacket liquid vapour is cooled off, what assurance reaction chamber pressure transducer recorded is reaction gas pressure; Y shape cooling worm internal diameter is between 4 ~ 7mm, and internal diameter is excessive, and heat conduction cooling effect is poor, and internal diameter is too small, and the liquid of condensation is because surface tension meeting blocking pipeline;
Described gas heating system is made up of heater strip, the equal backing of metal, temperature-control heat couple, heating cable and temperature control instrument.Heater strip, links to each other with temperature control instrument by the heating cable in the equal backing of metal inside by the insulating material uniform winding, and temperature-control heat couple places the equal backing of metal inside, closely contacts with the gas liquid reaction chamber, reaches the effect of quick temperature measurement and temperature control.Metal soaking sheet is looped around periphery, gas liquid reaction chamber, its bottom coincide together by metal flanging technology, the heat that the equal backing of metal produces heater strip is evenly distributed on the outer wall in gas liquid reaction chamber, by heat exchange pattern gas liquid reaction chamber internal-response thing is heated.
Described gas stirring system accelerates knob by magnetic stir bar, magnetic stirring apparatus and stirring and forms.Magnetic stir bar is put into the gas liquid reaction chamber by inlet, and magnetic stir bar is the magnetic material that is coated by wear-resisting organic material, carries out circular motion in the moving magnetic field of rotation.Magnetic stirring apparatus produces the magnetic field of rotation, accelerates the frequency that knob can change rotating magnetic field by regulating to stir, thereby changes the circular motion speed of magnetic stir bar.
Described cooling system is made up of cooling jacket, cooling jacket entrance, cooling jacket outlet, Y shape cooling worm and coiled pipe joint flange.Y shape cooling worm top is Y shape bifurcated, makes condensed fluid flow into the gas liquid reaction chamber, and the bottom is coiled pipe or the spirality pipeline that spirals and rise, and links to each other with the gas liquid reaction chamber by the coiled pipe joint flange bottom.Y shape cooling worm outer flow supercooling medium, heat eliminating medium enters from the cooling jacket entrance, overflows from the cooling jacket outlet.Y shape cooling worm and cooling jacket (16) are by being welded together.
Described data acquisition system (DAS) is made up of data acquisition and valve controling circuit plate and host computer.After being converted into digital signal, the voltage that data acquisition and valve controling circuit plate import measurement chamber thermopair, gas temperature thermocouple, liquid temperature thermocouple, measurement chamber pressure transducer and reaction chamber pressure transducer into or current analog signal import host computer into as computational data.When the satisfied setting of pressure condition requires, host computer sends the digital switch instruction to data acquisition and valve controling circuit plate, data acquisition and valve controling circuit plate are converted into voltage signal with digital signal, drive source of the gas solenoid valve, vacuum solenoid or equal pressure electromagnetic valve and open or closure, realize the automatic control of program.
Described measurement chamber thermocouple sheath, gas thermometric idol sleeve pipe and liquid thermometric idol sleeve pipe front end are through the processing attenuate, strengthen heat-conductive characteristic, its wall thickness is no more than 0.3 mm, thus the sensitivity that improves measurement chamber thermopair, gas temperature thermocouple and survey the warm galvanic couple of body examination.
The gas liquid reaction rate test process of described device based on volumetric determination gas-liquid chemical reaction rate is as follows: at first, magnetic stir bar is placed in the gas liquid reaction chamber by inlet, the solution for preparing is put into the gas liquid reaction chamber by funnel through inlet, the sealing inlet, the gas liquid reaction chamber is placed on the magnetic stirring apparatus, open the magnetic stirring apparatus switch, rotation is stirred and is accelerated knob, make magnetic stir bar in liquid, be rotated motion, open temperature control instrument, set heating-up temperature, temperature control is carried out in the gas liquid reaction chamber, open host computer and data acquisition and valve controling circuit plate.Then, open vacuum pump, open vacuum solenoid, equal pressure electromagnetic valve and source of the gas solenoid valve, gas circuit and cavity are vacuumized, remove foreign gas and liquid upper steam, when pressure reaches designated value, close vacuum solenoid, source of the gas solenoid valve and equal pressure electromagnetic valve, open source of the gas gas cylinder to be measured, when reduction valve pressure is adjusted to the specified pressure value, open the source of the gas solenoid valve, after measurement chamber pressure transducer institute measuring pressure value and measurement chamber thermopair measured temperature are stable, record metering intracavity gas force value and temperature value because metering chamber volume is known, calculate the number of moles of gas that enters measurement chamber according to the equation of gas state.Afterwards, when treating liquid temperature thermocouple numerical value in the gas liquid reaction chamber and temperature control instrument setting value phase difference constant, the temperature value of the warm galvanic couple of the gentle body examination of force value of record reaction chamber pressure transducer, according to gas liquid reaction cavity volume and the institute's liquor capacity of adorn calculating gas liquid reaction chamber upper space gas volume, again according to the molal quantity of equation of gas state calculating liquid vapour.At this moment, open equal pressure electromagnetic valve, because gaseous tension is higher than vapor pressure in the gas liquid reaction chamber in the measurement chamber, gas in the measurement chamber enters the gas liquid reaction chamber through equal pressure electromagnetic valve, with liquid generation chemical reaction, when measurement chamber pressure transducer institute measuring pressure numerical value and reaction chamber pressure transducer institute measuring pressure value difference value are constant, close equal pressure electromagnetic valve, be worth over time by data acquisition and valve controling circuit plate record gas liquid reaction cavity pressure, can calculate the molal quantity that the gas liquid reaction intracavity gas reduces according to Dalton's law (of partial pressures), thereby calculate the speed of gas liquid reaction.
The temperature of heat eliminating medium is determined by actual needs in the length of described Y shape cooling worm and the cooling jacket, guarantees reaction chamber pressure transducer place frozen-free liquid.
Described temperature-control heat couple can adopt thermometric components and parts such as the thermal resistance that meets the temperature-controlled precision requirement, thermistor.
The equal backing of described metal adopts the good materials such as red copper, aluminium or stainless steel of heat conductivility.
Described measurement chamber thermopair, the warm galvanic couple of the gentle body examination of liquid temperature thermocouple can adopt other thermometric components and parts that meet on-the-spot accuracy requirement respectively, substitute as thermal resistance, thermistor etc.
Modes such as the pressure measurement of measurement chamber constant volume, gas-liquid separation thermometric, the endless metal that the utility model proposes evenly heats, external heating temperature control, cooling are thrown in reaction gas except liquid, divided dose have guaranteed the reliable and stable of this contrive equipment test performance, simple and convenient, it is the strong test unit of research gas liquid reaction speed, be applicable to the reaction of all gases and liquid under different temperatures, the different pressures, the gas at rest uptake in the time of can also measuring the reaction rate of liquid desorption gas inverse process and gas liquid reaction as required and be in mobile equilibrium.
Description of drawings
Fig. 1 is the principle of work synoptic diagram of the utility model device;
Among Fig. 1: 1. source of the gas gas cylinder to be measured; 2. reduction valve; 3. source of the gas solenoid valve; 4. source of the gas joint flange; 5. measurement chamber; 6. measurement chamber thermocouple sheath; 7. measurement chamber thermopair; 8. all press joint flange; 9. measurement chamber pressure measurement joint flange; 10. measurement chamber pressure transducer; 11. vacuum joint flange; 12. vacuum solenoid; 13. vacuum pump; 14. equal pressure electromagnetic valve; 15. reaction chamber pressure transducer; 16. cooling jacket; 17. cooling jacket entrance; 18. cooling jacket outlet; 19. Y shape cooling worm; 20. coiled pipe joint flange; 21. gas liquid reaction chamber; 22. inlet; 23. gas thermometric idol sleeve pipe; 24. gas temperature thermocouple; 25. liquid thermometric idol sleeve pipe; 26. liquid temperature thermocouple; 27. heater strip; 28. the equal backing of metal; 29. magnetic stir bar; 30. magnetic stirring apparatus; Accelerate knob 31. stir; 32. temperature-control heat couple; 33. heating cable; 34. temperature control instrument; 35. data acquisition and valve controling circuit plate; 36. host computer;
Fig. 2 is all thermopairs and the sleeve pipe sketch thereof that places in the utility model device in the container;
6. measurement chamber thermocouple sheath; 7. measurement chamber thermopair; 23. gas thermometric idol sleeve pipe; 24. gas temperature thermocouple; 25. liquid thermometric idol sleeve pipe; 26. liquid temperature thermocouple.
Embodiment
Embodiment measures the chemical reaction rate of monoethanolamine solution (MEA) and carbon dioxide, select 30% MEA solution 500mL for use, measurement chamber 5 volumes are 500mL, gas liquid reaction chamber 21 volumes are 1000mL, measurement chamber thermopair 7, gas temperature thermocouple 24 and liquid temperature thermocouple 26 all adopt one-level T type thermopair, and its precision is ± 0.5 ℃.It is 0 ~ 1MPa that measurement chamber pressure transducer 10 adopts pressure limit, and precision is ± 0.06% piezoelectric transducer, and it is 0 ~ 0.2MPa that reaction chamber pressure transducer 15 adopts working pressure range, and maximum is born pressure 1MPa, and precision is ± 0.06% piezoresistive transducer.Vacuum pump 13 speed of exhausts are 0.5L/s, and source of the gas gas cylinder 1 to be measured is the dioxide bottle of 40L, and top pressure is 15MPa, and reduction valve 2 maximum ranges are 1.4MPa.Cooling jacket 16 links to each other with recirculated cooling water, and the recirculated cooling water temperature is controlled at 1 ± 0.1 ℃.The temperature of measurement chamber 5 is 28 ℃ of room temperatures, and temperature control instrument 34 temperature are made as 40 ℃.
Referring to Fig. 1 and Fig. 2, magnetic stir bar 29 and 30%MEA solution are placed in the gas liquid reaction chamber 21 by inlet 22, the sealing inlet, gas liquid reaction chamber 21 is placed on the magnetic stirring apparatus 30, adjust to stir and accelerate knob 31, make magnetic stir bar 29 Rotating with Uniform in liquid, open temperature control instrument 34, setting heating-up temperature is 40 ℃, open host computer 36 and data acquisition and valve controling circuit plate 35, open vacuum pump 13, open vacuum solenoid 12 and equal pressure electromagnetic valve 14, gas circuit and cavity are vacuumized, when the pressure instantaneous value is lower than 1Pa, close equal pressure electromagnetic valve 14 and vacuum solenoid 12, open source of the gas gas cylinder 1 to be measured, open reduction valve 2, be adjusted to 1MPa.Open source of the gas solenoid valve 3, charge into the carbon dioxide of 1.0MPa to measurement chamber 5, treat measurement chamber pressure transducer 10 pressure vary stable after, close source of the gas solenoid valve 3, calculate the molal quantity that charges into carbon dioxide in the measurement chamber 5 according to the equation of gas state.When treating that liquid temperature thermocouples 26 record in the gas liquid reaction chamber 21 temperature reaches 40 ± 0.1 ℃, open equal pressure electromagnetic valve 14, when measurement chamber pressure transducer 10 force value and 15 measuring pressure values of reaction chamber pressure transducer differ when satisfying the program setting requirement, close equal pressure electromagnetic valve 14.At this moment, the changing value of monitoring reaction cavity pressure sensor 15 pressure is made curve to the time, and during less than 120Pa/s, reaction finishes up to its force value rate of change.According to 40 ℃ of vapour pressures of calculating liquid of temperature that gas temperature thermocouple 24 records, calculate the carbon dioxide molar weight that enters gas liquid reaction chamber 21 according to the equation of gas state and Dalton's law (of partial pressures) again.By reaction pressure curve calculation carbon dioxide dividing potential drop rate over time, the volume by gas liquid reaction chamber 21 calculates chemical reaction rate again, thereby provides the rate equation of carbon dioxide and 30%MEA solution reaction.
Claims (4)
1. device based on volumetric determination gas-liquid chemical reaction rate is characterized in that this device is made up of air supply system, vacuum system, gas metering system, gas liquid reaction system, heating system, stirring system, cooling system and data acquisition system (DAS) eight parts;
Wherein said air supply system is made up of source of the gas gas cylinder to be measured (1), reduction valve (2), source of the gas solenoid valve (3) and source of the gas joint flange (4); Reduction valve (2) links to each other with source of the gas gas cylinder to be measured (1) by the high pressure sealing screw thread, source of the gas solenoid valve (3) links to each other with source of the gas joint flange (4) with reduction valve (2) by pipeline, and source of the gas joint flange (4) is used for being connected of air supply system and measurement chamber (5);
Described vacuum system is made up of vacuum joint flange (11), vacuum solenoid (12) and vacuum pump (13); Vacuum system is joined by vacuum joint flange (11) and measurement chamber (5), and vacuum pump (13), vacuum solenoid (12) and vacuum joint flange (11) link to each other by pipeline;
Described gas metering system is by measurement chamber (5), measurement chamber thermocouple sheath (6), measurement chamber thermopair (7), all press joint flange (8), measurement chamber pressure measurement joint flange (9) and measurement chamber pressure transducer (10) to form; Measurement chamber thermopair (7) places in the measurement chamber thermocouple sheath (6), measurement chamber thermocouple sheath (6) stretches in the measurement chamber (5), link together by welding technology and measurement chamber (5), measurement chamber pressure transducer (10) links to each other with measurement chamber (5) by measurement chamber pressure measurement joint flange (9), and measurement chamber (5) links to each other with equal pressure electromagnetic valve (14) by all pressing joint flange (8);
Described gas liquid reaction system is made up of equal pressure electromagnetic valve (14), reaction chamber pressure transducer (15), gas liquid reaction chamber (21), inlet (22), gas thermometric idol sleeve pipe (23), gas temperature thermocouple (24), liquid thermometric idol sleeve pipe (25) and liquid temperature thermocouple (26); Gas temperature thermocouple (24) places in the gas thermometric idol sleeve pipe (23), gas thermometric idol sleeve pipe (24) inserts top, gas liquid reaction chamber (21), link together by welding technology and gas liquid reaction chamber (21), liquid temperature thermocouple (26) places in the liquid thermometric idol sleeve pipe (25), liquid thermometric idol sleeve pipe (25) inserts bottom, gas liquid reaction chamber (21), but be higher than the magnetic stir bar height, link together by welding technology and gas liquid reaction chamber (21), inlet (22) is for having the pipeline of square nut, link together by welding technology with gas liquid reaction chamber (21), during work, by supporting bolt seal; Reaction chamber pressure transducer (15) is installed in Y shape cooling worm (19) top by screw thread, and Y shape cooling worm (19) internal diameter is between 4 ~ 7mm;
Described gas heating system is made up of heater strip (27), the equal backing of metal (28), temperature-control heat couple (32), heating cable (33) and temperature control instrument (34); Heater strip (27) passes through the insulating material uniform winding in the equal backing of metal (28) inside, link to each other with temperature control instrument (34) by heating cable (33), temperature-control heat couple (32) places the equal backing of metal (28) inside, closely contact with gas liquid reaction chamber (21), the equal backing of metal (28) is looped around periphery, gas liquid reaction chamber (21), its bottom coincide together by metal flanging technology, and the heat that the equal backing of metal (28) produces heater strip (27) is evenly distributed on the outer wall of gas liquid reaction chamber (21);
Described gas stirring system accelerates knob (31) by magnetic stir bar (29), magnetic stirring apparatus (30) and stirring and forms; Magnetic stir bar (29) is put into gas liquid reaction chamber (21) by inlet, and magnetic stir bar (29) is the magnetic material that is coated by wear-resisting organic material, carries out circular motion in the moving magnetic field of rotation; Magnetic stirring apparatus (30) produces the magnetic field of rotation, accelerates the frequency that knob (31) changes rotating magnetic field by regulating to stir, thereby changes the circular motion speed of magnetic stir bar (29);
Described cooling system is made up of cooling jacket (16), cooling jacket entrance (17), cooling jacket outlet (18), Y shape cooling worm (19) and coiled pipe joint flange (20); Y shape cooling worm (19) top is Y shape bifurcated, makes condensed fluid flow into gas liquid reaction chamber (21), and the bottom is coiled pipe or the spirality pipeline that spirals and rise, and links to each other with gas liquid reaction chamber (21) by coiled pipe joint flange (20) bottom; Y shape cooling worm (19) outer flow supercooling medium, heat eliminating medium enters from cooling jacket entrance (17), overflows from cooling jacket outlet (18); Y shape cooling worm (19) and cooling jacket (16) are by being welded together;
Described data acquisition system (DAS) is made up of data acquisition and valve controling circuit plate (35) and host computer (36); After being converted into digital signal, the voltage that data acquisition and valve controling circuit plate (35) import measurement chamber thermopair (7), gas temperature thermocouple (24), liquid temperature thermocouple (26), measurement chamber pressure transducer (10) and reaction chamber pressure transducer (15) into or current analog signal import host computer (36) into as computational data; When the satisfied setting of pressure condition requires, host computer (36) sends the digital switch instruction to data acquisition and valve controling circuit plate (35), data acquisition and valve controling circuit plate (35) are converted into voltage signal with digital signal, drive source of the gas solenoid valve (3), vacuum solenoid (12) or equal pressure electromagnetic valve (14) and open or closure, realize the automatic control of program;
Described measurement chamber thermocouple sheath (6), gas thermometric idol sleeve pipe (23) and liquid thermometric idol sleeve pipe (26) front end are through the processing attenuate, and its wall thickness is no more than 0.3 mm.
2. the device based on volumetric determination gas-liquid chemical reaction rate as claimed in claim 1 is characterized in that temperature-control heat couple can substitute with thermal resistance, thermistor temperature detecting components and parts.
3. the device based on volumetric determination gas-liquid chemical reaction rate as claimed in claim 1 is characterized in that the equal backing of metal adopts good red copper, aluminium or the stainless steel of heat conductivility.
4. the device based on volumetric determination gas-liquid chemical reaction rate as claimed in claim 1 is characterized in that substituting with thermal resistance, thermistor at measurement chamber thermopair, the warm galvanic couple of the gentle body examination of liquid temperature thermocouple.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320172106 CN203164076U (en) | 2013-04-08 | 2013-04-08 | Device for determining gas-liquid chemical reaction rate based on volumetric method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201320172106 CN203164076U (en) | 2013-04-08 | 2013-04-08 | Device for determining gas-liquid chemical reaction rate based on volumetric method |
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| CN203164076U true CN203164076U (en) | 2013-08-28 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196784A (en) * | 2013-04-08 | 2013-07-10 | 北京科技大学 | Device and method for measuring gas-liquid chemical reaction rate based on volumetric method |
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2013
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103196784A (en) * | 2013-04-08 | 2013-07-10 | 北京科技大学 | Device and method for measuring gas-liquid chemical reaction rate based on volumetric method |
| CN103196784B (en) * | 2013-04-08 | 2015-05-13 | 北京科技大学 | Device and method for measuring gas-liquid chemical reaction rate based on volumetric method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130828 Effective date of abandoning: 20150513 |
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| RGAV | Abandon patent right to avoid regrant |