CN205749419U - A kind of kinetics detection device of the hydrogen catalysis plate that disappears - Google Patents
A kind of kinetics detection device of the hydrogen catalysis plate that disappears Download PDFInfo
- Publication number
- CN205749419U CN205749419U CN201620047077.9U CN201620047077U CN205749419U CN 205749419 U CN205749419 U CN 205749419U CN 201620047077 U CN201620047077 U CN 201620047077U CN 205749419 U CN205749419 U CN 205749419U
- Authority
- CN
- China
- Prior art keywords
- hydrogen
- density
- instrument
- distribution tank
- reaction vessel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
The utility model discloses the kinetics detection device of a kind of hydrogen catalysis plate that disappears, including hydrogen source, distribution tank, reaction vessel, density of hydrogen instrument, gas circulator and data acquisition processing device；Gas circulator, distribution tank, reaction vessel and density of hydrogen instrument join end to end and form a closed loop, wherein: hydrogen source is used for providing hydrogen；Distribution tank within it mixes for hydrogen and air, obtains measuring required density of hydrogen；Reaction vessel is used for placing catalytic plate, and provides the environment of hydrogen-oxygen catalytic reaction；Density of hydrogen instrument density of hydrogen in quantitative measurement closed loop；Gas circulator is for controlling the gas circulation in closed loop；Data acquisition processing device is filled with catalyst temperature and hydrogen reaction density data in the pressure before and after hydrogen and closed loop for gathering in distribution tank.This utility model is reasonable in design, simple to operate, safe and reliable, can realize detection nuclear power station hydrogen-eliminating catalyst activation energy accurately and fast and pre-exponential factor.
Description
Technical field
This utility model relates to the security detection field of nuclear power station, particularly relates to the kinetics detection device of a kind of hydrogen catalysis plate that disappears.
Background technology
After Fukushima, Japan nuclear accident, the risk of hydrogen explosion in nuclear power plant containment shell is increasingly paid close attention to by international and national, and require to be distributed the placement passive hydrogen recombiner of dozens of (PARs) in the secondary containment with three generations's nuclear power station, to be used for the hydrogen concentration under accident condition is quickly consumed, thus it is reduced or avoided when design basis accident and major accident, there is the quick-fried danger of hydrogen.The core component of this passive hydrogen recombiner is the catalytic plate that catalyst is contained on surface, and its operation principle can be summarized as follows:
Under accident condition, hydrogen molecule contacts on recombiner catalytic plate with the oxygen molecule in air and occursStrongly exothermic radical reaction, reaction discharge amount of heat heating Vertical Channel in air, hot air temperature raise, density reduce and along passage rise；Meanwhile, recombiner bottom cold air flows into and supplements, the circulation of gas natural diffuseness forms " stack effect ", achieving " passive " convection circulation of gas inside and outside hydrogen oxygen recombination device, the catalyst on catalytic plate surface can be substantially reduced the activation energy of hydrogen oxygen composite reaction, makes reaction quickly carry out, thus the convection circulation of atmospheric environment in accelerating recombiner and containment, promote hydrogen-oxygen mixing, improve the Hydrogen Energy power that disappears of recombiner, it is to avoid the accumulation of hydrogen.
Activation energy and pre-exponential factor are in chemical kinetics and two important parameters, the essence of chemical reaction and catalyst role rationally can be characterized, it is activation energy that katakinetomeres is changed into the required energy absorbed of anakmetomeres, and it is the average energy difference with reactant molecule average energy of anakmetomeres.And pre-exponential factor is one and is only determined and the constant unrelated with material concentration in reaction temperature and system by reaction person's character.For the catalytic plate of heterogeneity, its hydrogen oxygen composite reaction activation capacity is different, and it is too many and cause hydrogen quick-fried that catalytic reaction is easily caused heat production the soonest, and reaction also is difficult to meet accident condition the most slowly and quickly disappears the requirement of hydrogen.For this, it is to be appreciated that add the activation energy after catalytic plate in hydrogen oxygen composite reaction, the heat that catalytic reaction can be sold quantitatively Hydrogen Energy power and generation by the size of activation energy is estimated, pass judgment on this and select suitable catalyst, for conventional liquid catalyst reaction, activation energy is the important indicator passing judgment on catalyst activity, and pre-exponential factor is the description the most essential to this chemical reaction.But, for gas reaction, response speed is too fast, and reaction fluctuation is very big, and influence factor is the most extremely complex, and the activation energy of therefore gas reaction measures always one of this area subject matter needing solution badly.
Utility model content
For above-mentioned the deficiencies in the prior art, this utility model provides the kinetics detection device of a kind of hydrogen catalysis plate that disappears, activation energy and the pre-exponential factor of different catalytic plate can be recorded, for catalytic plate preparation in actual applications with select and provide theoretical foundation while the catalytic performance of catalytic plate being passed judgment on activation energy.
For achieving the above object, the technical solution adopted in the utility model is as follows:
The kinetics detection device of a kind of hydrogen catalysis plate that disappears, including hydrogen source, distribution tank, reaction vessel, density of hydrogen instrument, gas circulator and data acquisition processing device；Described gas circulator, distribution tank, reaction vessel and density of hydrogen instrument join end to end and form a closed loop, wherein:
Hydrogen source, for providing hydrogen in distribution tank；
Distribution tank, within it mixes for hydrogen and air, obtains measuring required density of hydrogen；
Reaction vessel, for placing the catalytic plate used by test, and provides the environment of hydrogen-oxygen catalytic reaction；
Density of hydrogen instrument, the density of hydrogen in quantitative measurement closed loop；
Gas circulator, for controlling the gas circulation in closed loop；
Data acquisition processing device, is filled with catalyst temperature and hydrogen reaction density data in the pressure before and after hydrogen and closed loop for gathering in distribution tank.
Further, described hydrogen source and distribution tank are connected to form an open cycle system by connecting tube.
Specifically, described data acquisition processing device includes PC, the data collecting instrument being simultaneously connected with this PC and density of hydrogen instrument by signal transmssion line, simultaneously piezometer tank connected with data collecting instrument and distribution, and one end is connected with this data collecting instrument, the other end is inserted in reaction vessel and for the thermocouple of real time record catalytic plate reaction temperature.
Yet further, the drying tube for absorbing the water vapour generated in reaction vessel it is additionally provided with between the reaction vessel in described closed loop and density of hydrogen instrument.
Further, the effusion meter for controlling to enter the gas concentration in density of hydrogen instrument it is additionally provided with between density of hydrogen instrument and the gas circulator in described closed loop.
As preferably, described effusion meter is chosen as suspended body flowmeter.
As preferably, described hydrogen source is chosen as hydrogen sky generator.
As preferably, described density of hydrogen instrument is chosen as heat-conducted density of hydrogen instrument.
Compared with prior art, this utility model has the advantages that
(1) this utility model uses for reference the measuring method of liquid catalyst kinetics parameter, designed by rational structure, well the kinetics of gas reactions parameter being difficult to measure can be carried out Static Measurement And Calculation in use, thus solve gas reaction activation energy and pre-exponential factor is difficult to the difficult problem measured.This utility model has immeasurable value and significance to the selection of hydrogen recombiner catalyst.
(2) this utility model uses gas circulator as the power source of closed loop, makes course of reaction circulation carry out, it is to avoid reaction is interrupted and reacts the generation of incomplete phenomenon, most important to the continuous acquisition of measurement data.
(3) this utility model installs drying tube after reaction vessel additional, and the measurement of density of hydrogen instrument is impacted by the water vapour that reaction can be avoided to generate, and the most also the selection for density of hydrogen instrument is provided convenience.
(4) this utility model is also provided with effusion meter after density of hydrogen instrument, it is possible to achieve current limliting, it is ensured that the flow in closed loop is less than the metered flow of density of hydrogen instrument, thus plays protection equipment and strengthen the effect of processing safety.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is density of hydrogen and catalytic plate temperature time history plot.
Fig. 3 is the relation schematic diagram between the natural logrithm of reaction rate constant and the inverse of catalytic plate temperature.
Wherein, the parts that reference is corresponding are entitled:
1-hydrogen source, 2-pipe valve, 3-distribution tank, 4-pipe valve, 5-piezometer, 6-reaction vessel, 7-catalytic plate, 8-thermocouple, 9-drying tube, 10-density of hydrogen instrument, 11-effusion meter, 12-gas circulator, 13-pipe valve, 14-data collecting instrument, 15-PC machine, 16-data line, 17-connecting tube.
Detailed description of the invention
The utility model is described in further detail with embodiment in explanation below in conjunction with the accompanying drawings, and mode of the present utility model includes but are not limited to following example.
As shown in Figure 1, this utility model provides the device of a kind of hydrogen catalysis kinetics parameter measurement that can be used for disappearing, and it includes hydrogen source 1, distribution tank 3, reaction vessel 6, drying tube 9, density of hydrogen instrument 10, effusion meter 11, gas circulator 12, data acquisition processing device, connecting tube 17 and each terminal valve.
Described gas circulator 12, distribution tank 3, reaction vessel 6, drying tube 9, density of hydrogen instrument 10 and effusion meter 11 are connected to form a closed loop (also referred to as response circuit in the present embodiment) by connecting tube 17.
Described hydrogen source 1 is connected with distribution tank 3, for providing the hydrogen needed for reaction, the present embodiment selects hydrogen sky generator as hydrogen source, the valvular circular cylindrical cavity of band that described distribution tank 3 selects volume to be 4L, within it mix for hydrogen and air, obtain measuring required density of hydrogen.
The rustless steel cylindrical cavity that volume is 100ml of the flange assembling that described reaction vessel 6 selects good leak tightness, can often dismantle, built-in catalytic plate station, for placing the catalytic plate used by test, as shown in Figure 1.Reaction vessel 6 provides hydrogen-oxygen catalytic reaction environment, and catalytic plate 7 then contains the porous stainless steel of Pt, Pd or Pt-Pd nanoparticle catalyst for surface.Described drying tube 9 is internal is filled with desiccant, and it is placed in the exit of reaction vessel 6, for absorbing water vapour that is reacted in reaction vessel 6 and that generate, provides hydrogen measurement environment for density of hydrogen instrument 10, and the most also the selection for density of hydrogen instrument provides convenient.
Described density of hydrogen instrument 10 option is more, and general density of hydrogen instrument can be selected, and the present embodiment selects heat-conducted density of hydrogen instrument, and its maximum gas flow allowed is 800ml/min, the density of hydrogen in quantitative measurement response circuit.And the effusion meter 11 after density of hydrogen instrument 10, then for controlling the metered flow less than density of hydrogen instrument of the flow in response circuit, in the present embodiment, suspended body flowmeter selected by this effusion meter.
Described gas circulator 12, for driving the gas in response circuit to cycle through the catalytic plate in reaction vessel 6, can be selected for the small-flow gas circulating pump that metered flow is 1L/min, and this circulating pump 12 was connected with distribution tank 3 by connecting.
Described data acquisition processing device is filled with catalyst temperature and hydrogen reaction density data in the pressure before and after hydrogen and closed loop for gathering in distribution tank, it includes PC 15, the data collecting instrument 14 being simultaneously connected with this PC 15 and density of hydrogen instrument 10 by signal transmssion line, be connected with data collecting instrument 14 and distribution tank 3 simultaneously, for the piezometer 5 that the pressure before and after inflation in distribution tank 3 is monitored, and one end is connected with this data collecting instrument 14, the other end is inserted in reaction vessel and for the thermocouple 8 of real time record catalytic plate reaction temperature.
Below use process of the present utility model is introduced.
This utility model use first density of hydrogen is configured, after in circulating pump makes response circuit mixed gas circulation by the way of, it is achieved to the static measurement of catalyst reaction activity in reaction vessel, its metering system is as follows:
The pipe valve 4 being first shut off between distribution tank 3 and reaction vessel 6, opens the pipe valve 2 between itself and hydrogen source 1, and and gas circulator 12 between pipe valve 13.Hydrogen source 1 is filled with hydrogen in distribution tank 3, monitors the piezometer 5 of distribution tank simultaneously, is then estimated volumetric concentration C being filled with hydrogen by below equation:
In formula, P1、P2Respectively it is filled with the force value before and after hydrogen.
After in distribution tank 3, the blowing pressure arrives estimated value, close the valve 2 between distribution tank 3 and hydrogen source 1, then the pipe valve 4 between distribution tank 3 and reaction vessel 6 is opened, open circulating pump 12 and data collecting instrument 14 simultaneously, the hydrogen that configuration is good is made to circulate in response circuit, the density of hydrogen that in temperature during reaction vessel 6 recorded by PC 15 simultaneously and loop, hydrogen concentration instrument records.
When the temperature of catalytic plate 7 drops to room temperature in question response container 6, close the valve 13 and 4 between circulating pump 12 and distribution tank 3 and reaction vessel 6, then preserve the data of data collecting instrument.
Then, change over curve by the hydrogen concentration obtained and catalyst temperature changes over curve, as in figure 2 it is shown, can obtain hydrogen and oxygen catalytic reaction temperature is reaction rate constant k during TT:
In formula, t is the response time, and T is catalyst thermodynamic temperature.
Obtain kTAfter, then by Arrhenius formula, the activation energy of this catalytic reaction can be obtaineda:
lnkT=ln A-Ea/RT
Wherein, lnkTAfter the curve matching formed with 1/T be a slope be the straight line of negative, as it is shown on figure 3, the slope correspondence-E of this straight linea/ R, R are molar gas constant, and its value is 8.314J/molK, then can obtain activation energya, and the intercept that matched curve is on the horizontal scale is the natural logrithm value of pre-exponential factor A of this reaction.
This utility model is designed by rational structure, hydrogen catalysis kinetics parameter can be offseted well and carry out Static Measurement And Calculation, it first passes through air distribution system and prepares density of hydrogen, and ensure gas mix homogeneously, then make, by gas circulator, the catalytic plate that mixed gas is continuously circulated through in reaction vessel, achieve the continuous monitoring of density of hydrogen change and catalytic plate variations in temperature, last binding isotherm calculates, existing mode is utilized to complete data analysis and process, thus successfully calculated disappear hydrogen catalysis plate catalytic reaction activation energy and pre-exponential factor, solve the difficult problem that gas reaction activation energy is difficult to measure.The measurement process that this utility model offsets hydrogen catalysis kinetics parameter is simple, and results of measuring is accurate, measures Environmental security, thus also reasonable selection and preparation for nuclear power station hydrogen-eliminating catalyst provides reliable foundation.
Above-described embodiment is only one of preferred implementation of the present utility model; should not be taken to limit protection domain of the present utility model; all in body design thought of the present utility model and the change having no essential meaning made mentally or polishing; it is solved the technical problem that still consistent with this utility model, within all should being included in protection domain of the present utility model.
Claims (5)
1. the hydrogen catalysis plate that disappears kinetics detection device, it is characterised in that include hydrogen source (1), distribution tank (3),
Reaction vessel (6), density of hydrogen instrument (10), gas circulator (12) and data acquisition processing device；Described gas circulator
(12), distribution tank (3), reaction vessel (6) and density of hydrogen instrument (10) join end to end and form a closed loop, wherein:
Hydrogen source, for providing hydrogen in distribution tank；
Distribution tank, within it mixes for hydrogen and air, obtains measuring required density of hydrogen；
Reaction vessel, for placing the catalytic plate used by test, and provides the environment of hydrogen-oxygen catalytic reaction；
Density of hydrogen instrument, the density of hydrogen in quantitative measurement closed loop；
Gas circulator, for controlling the gas circulation in closed loop；
Data acquisition processing device, is filled with catalyst temperature in the pressure before and after hydrogen and closed loop for gathering in distribution tank
With hydrogen reaction density data.
The kinetics detection device of a kind of hydrogen catalysis plate that disappears the most according to claim 1, it is characterised in that described hydrogen
Source of the gas (1) and distribution tank (3) are connected to form an open cycle system by connecting tube.
The kinetics detection device of a kind of hydrogen catalysis plate that disappears the most according to claim 1 and 2, it is characterised in that institute
State data acquisition processing device and include PC (15), by signal transmssion line simultaneously with this PC (15) and density of hydrogen instrument
(10) data collecting instrument (14) connected, the piezometer (5) being simultaneously connected with data collecting instrument (14) and distribution tank (3),
And one end is connected with this data collecting instrument (14), the other end is inserted in reaction vessel and reacts for real time record catalytic plate
The thermocouple (8) of temperature.
A kind of hydrogen catalysis plate that disappears the most according to claim 3 kinetics detection device, it is characterised in that described in close
It is additionally provided with between reaction vessel (6) and density of hydrogen instrument (10) in loop back path for absorbing the water vapour generated in reaction vessel
Drying tube (9).
A kind of hydrogen catalysis plate that disappears the most according to claim 4 kinetics detection device, it is characterised in that described in close
It is additionally provided with between density of hydrogen instrument (10) and gas circulator (12) in loop back path for controlling in entrance density of hydrogen instrument
The effusion meter (11) of gas concentration.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620047077.9U CN205749419U (en) | 2016-01-18 | 2016-01-18 | A kind of kinetics detection device of the hydrogen catalysis plate that disappears |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620047077.9U CN205749419U (en) | 2016-01-18 | 2016-01-18 | A kind of kinetics detection device of the hydrogen catalysis plate that disappears |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205749419U true CN205749419U (en) | 2016-11-30 |
Family
ID=57388702
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620047077.9U Expired - Fee Related CN205749419U (en) | 2016-01-18 | 2016-01-18 | A kind of kinetics detection device of the hydrogen catalysis plate that disappears |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205749419U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527369A (en) * | 2016-01-18 | 2016-04-27 | 中国工程物理研究院材料研究所 | Reaction kinetics detecting device of dehydrogenation and catalyzation board and realizing method thereof |
-
2016
- 2016-01-18 CN CN201620047077.9U patent/CN205749419U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105527369A (en) * | 2016-01-18 | 2016-04-27 | 中国工程物理研究院材料研究所 | Reaction kinetics detecting device of dehydrogenation and catalyzation board and realizing method thereof |
| CN105527369B (en) * | 2016-01-18 | 2018-02-02 | 中国工程物理研究院材料研究所 | A kind of implementation method of the kinetics detection means for the hydrogen catalysis plate that disappears |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104392753B (en) | The experimental system of simulation Nuclear Safety shell major accident operating mode and its implementation | |
| CN105527369B (en) | A kind of implementation method of the kinetics detection means for the hydrogen catalysis plate that disappears | |
| CN105891094B (en) | A kind of corrosion testing apparatus and its test method of analog complex environment | |
| CN104269195B (en) | The implementation method of the experimental system of simulation Nuclear Safety shell basis accident operating mode | |
| CN103033591B (en) | System and method for testing catalyst dehydrogenation performance | |
| CN104200856B (en) | The comprehensive performance testing device of a kind of hydrogen oxygen recombination catalyst and application process thereof | |
| CN108120568A (en) | A kind of fuel cell pile air-tightness care testing device | |
| CN102744062B (en) | Passive hydrogen recombiner catalytic plate for nuclear power plant and hydrogen recombiner composed of catalytic plate | |
| CN211159795U (en) | Hydrate formation simulation device | |
| CN109738801A (en) | Battery system heating power test method and system | |
| CN203275231U (en) | Device for measuring dynamic adsorption coefficient of material in vacuum | |
| CN106908347A (en) | The experimental provision and application method of moisture are quantitatively adding in a kind of coal body to the adsorbed state for having certain pressure | |
| CN105551542B (en) | A kind of water cooling containment simulator | |
| CN207096165U (en) | Mixed gas concentration on-line measurement device | |
| CN205749419U (en) | A kind of kinetics detection device of the hydrogen catalysis plate that disappears | |
| CN103512966B (en) | Sulfur recovery catalyst activity evaluating device and test method | |
| Yang | An LMR core thermal-hydraulics code based on the ENERGY model | |
| CN102608001A (en) | Hydrogen diffusion penetration characteristics measuring device | |
| CN204087820U (en) | The experimental system of simulation Nuclear Safety shell basis accident operating mode | |
| CN114636810A (en) | Air thermochemical oil gas in-situ hydrogen production and modification simulation system | |
| CN202471554U (en) | Hydrogen diffusion and permeability measuring device | |
| CN103698092B (en) | The quantitative leak detecting device of pressure system | |
| CN205353035U (en) | Detect denitration catalyst comprehensive properties's test device | |
| CN104998575A (en) | Acid solution preparation apparatus capable of continuously monitoring pH value and monitoring and preparation method therefor | |
| CN216259896U (en) | Device for hydrogen elimination treatment of hydrogen-containing gas |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161130 Termination date: 20180118 |