CN106896054A - A kind of supercritical carbon dioxide corrosion experimental device - Google Patents
A kind of supercritical carbon dioxide corrosion experimental device Download PDFInfo
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Abstract
A kind of supercritical carbon dioxide corrosion experimental device, including carbon dioxide air source, preheating furnace and corrosion reacting kettle, the outlet of carbon dioxide air source is connected through booster pump with preheating furnace entrance, preheating outlet of still is connected with for placing the corrosion reacting kettle of sample, and the outlet of corrosion reacting kettle is connected with cooling system.The present invention is by setting carbon dioxide air source, booster pump, corrosion reacting kettle and cooling system, by carbon dioxide air source by entering corrosion reacting kettle after booster pump supercharging, by setting condenser system after corrosion reacting kettle, the condensing rate of gas is improved, increase the stability and security of system.Present apparatus simple structure, can be simple and effective to realize test material in high-temperature supercritical carbon dioxide (S CO in laboratory conditions2) under the conditions of corrosion behavior.
Description
Technical field
The present invention relates to a kind of material corrosion experimental provision, and in particular to a kind of supercritical carbon dioxide corrosion experiment dress
Put.
Background technology
Supercritical carbon dioxide (S-CO2) Brayton cycle is with carbon dioxide (critical pressure in a supercritical state
7.38MPa, 30.98 DEG C of critical-temperature) it is working medium, realize that energy is changed using Brayton cycle principle.It is extensive compared to current
The Steam Power Circulation for using, S-CO2Energy conversion efficiency under Brayton cycle high temperature (generally greater than 400 DEG C) is higher, and
The volume of turbine system and cooling device just corresponds to 1/10th of vapour system corresponding device volume；Compared to conventional gas
Brayton cycle, its compression process parameter be located at working medium Near The Critical Point the characteristics of cause that compression power consumption is significantly reduced, circulation effect
Rate is significantly improved.Supercritical carbon dioxide (S-CO2) Brayton cycle is because the technical advantage of its own is in new combustion engine, forth generation
There is potential application in nuclear power, thermoelectricity and solar power generation unit.Relative to system design, S-CO2Brayton cycle system
Critical component in system, such as turbine, heat exchanger, pipeline, alloy corrosion behavior will be decision systems safety and component life
One of key factor.
It is generally believed that under lower temperature (<400 DEG C) dry, pure S-CO2Fluid is stable, with the metal portion for contacting
The speed that part (pressure vessel, pipeline, power part etc.) reacts is extremely low.And in CO2Catch and storage, CO2Transport, surpass and face
Boundary CO2In Brayton Cycle system, doping vapor, sulfurous gas (1mg/L magnitudes), air etc. are inevitable, are also
Causing corrosion phenomenon Producing reason.At higher temperatures, such as supercritical CO2CO in Brayton cycle fired power generating unit2Temperature
650 DEG C/25MPa or higher is can reach with pressure, even if with ultrapure CO2Used as flow media, the critical component in system is still
Certain corrosion phenomenon occurs.The ambient parameter such as extent of corrosion and alloy material, temperature and pressure has close relationship.
Therefore, by supercritical carbon dioxide (S-CO2) Brayton cycle is necessary to alloy when being applied to generating set
Supercritical carbon dioxide corrosion behavior investigated, the corrosion mechanism in alloy under arms environment is dissected.But examine
Consider power plants generating electricity efficiency, it is difficult to carry out actual measurement experiment in power plant, therefore, it is necessary to developing one kind can effectively simulate pot
The laboratory instrumentation of stove service condition.Relevant alloy is in S-CO at present2Corrosion behavior research report in environment is relatively
Few, corrosion experimental device used does not possess condition of high voltage, and its experiment parameter circulates thermal power generation far below supercritical carbon dioxide
Aims of systems parameter (750 DEG C, 30MPa), and the experiment demand of HTHP Dynamic Corrosion cannot be simulated.Accordingly, it is considered to arrive conjunction
The resistance to supercritical carbon dioxide corrosivity of gold is to research and development supercritical carbon dioxide (S-CO2) Brayton cycle generating set it is important
Property, design a kind of supercritical carbon dioxide HTHP corrosion resistance laboratory instrumentation of effective simulation boiler operatiopn condition and compel
In the eyebrows and eyelashes, supercritical carbon dioxide etching problem is solved, be that high parameter supercritical carbon dioxide generation technology is provided fundamental basis
And new approaches.
The content of the invention
To overcome the defect of prior art, it is an object of the present invention to be directed to supercritical carbon dioxide (S-CO2) Bretton
Circulation, there is provided one kind can be simple and effective to realize test material in the overcritical titanium dioxide of HTHP in laboratory conditions
Carbon (S-CO2) under the conditions of corrosion behavior dynamic circulation supercritical carbon dioxide corrosion experimental device.
To achieve the above object, the technical scheme is that：
A kind of supercritical carbon dioxide corrosion experimental device, including carbon dioxide air source, preheating furnace and for placing sample
Corrosion reacting kettle, the outlet of carbon dioxide air source is through booster pump, quantitatively injection container is connected with preheating furnace entrance, preheating furnace
Outlet is connected with corrosion reacting kettle entrance, and the outlet of corrosion reacting kettle is connected with cooling system；It is provided with the preheating furnace
Temperature-control heat couple for controlling preheating furnace temperature.
Further improvement of the invention is that the booster pump is connected with air compressor.
Further improvement of the invention is that the outlet of the booster pump is connected through high pressure storage tank with quantitative injection container
It is logical.
Further improvement of the invention is that the quantitatively injection container is connected with high pressure constant-flux pump.
Further improvement of the invention is that the corrosion reacting kettle is arranged in kettle heating furnace.
Further improvement of the invention is that the corrosion reacting kettle top and bottom are provided with quick opening valve, and corrosion is anti-
Answer and be additionally provided with kettle kettle temperature thermocouple.
Further improvement of the invention is that the cooling system includes condenser and gas-liquid separator, autoclave
Outlet be connected with gas-liquid separator by the road, after counterbalance valve and condenser.
Of the invention further improvement be, the outlet of the gas-liquid separator by the road, the entrance of valve and drier
It is connected, the outlet of drier is connected with carbon dioxide air source.
Compared with prior art, beneficial effects of the present invention：
The present invention is by setting carbon dioxide air source, quantitatively booster pump, injection container, corrosion reacting kettle and cooling system
System, by carbon dioxide air source by after booster pump supercharging, by quantitative injection container, can be required in preheating furnace according to experiment
A certain amount of carbon dioxide is injected, and the temperature in preheating furnace is controlled in real time by setting temperature-control heat couple in preheating furnace
Degree, then carbon dioxide enters corrosion reacting kettle, and condenser system is set after corrosion reacting kettle, it is possible to increase the condensation speed of gas
Rate, increases the stability and security of system.Present apparatus simple structure, can in laboratory conditions, simple and effective realization
Test material is in high-temperature supercritical carbon dioxide (S-CO2) under the conditions of corrosion behavior.
Further, the present invention is connected by by cooling system with carbon dioxide air source, forms media flow loop, realizes
The dynamic circulation of carbon dioxide, can truly simulate boiler operatiopn condition, effectively save cost.
Further, by setting kettle heating furnace, carbon dioxide can be again heated needed for reaching corrosion experiment
Temperature.
Brief description of the drawings
Fig. 1 is apparatus structure schematic diagram of the invention.
Wherein：1st, carbon dioxide air source；2nd, drier；3rd, air compressor；4th, booster pump；5th, high pressure storage tank；6th, it is quantitative
Injection container；7th, high pressure constant-flux pump；8th, preheating furnace；9th, corrosion reacting kettle；10th, condenser；11st, gas-liquid separator；12nd, back pressure
Valve；13rd, temperature thermocouple；14th, temperature-control heat couple；15th, valve.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
Referring to Fig. 1, the present invention includes that the carbon dioxide plenum system, preheating furnace 8 and the corrosion that are sequentially connected with by pipeline are anti-
Kettle 9, carbon dioxide is answered to come from 99.9998% carbon dioxide air source 1 and by the dried carbon dioxide of drier 2；Two
Carbonoxide plenum system includes carbon dioxide air source 1, and carbon dioxide air source 1 is exported and is connected with booster pump 4 through valve, booster pump 4
It is connected with air compressor 3；Source of the gas after the supercharging of booster pump 4 by entering high pressure storage tank 5；The outlet of high pressure storage tank 5 and quantitative note
Enter the entrance of container 6 to be connected, quantitatively inject the outlet of container 6 and be connected with the entrance of preheating furnace 8, preheating furnace 8 is exported and corrosion reacting kettle 9
Entrance is connected；Quantitatively injection container 6 is connected with high pressure constant-flux pump 7, and this quantitatively injects the import and export of container 6 and is respectively provided with valve
To control source of the gas flow velocity；The source of the gas for obtaining proper flow rates by control enters preheating furnace 8, is provided with for controlling on preheating furnace 8
Preheat the temperature-control heat couple 14 of furnace temperature, the outlet of preheating furnace 8 through pipeline be arranged in kettle heating furnace and treat for placing
The autoclave 9 for surveying part is connected, and kettle temperature thermocouple 13, and corrosion reacting kettle 9 are provided with corrosion reacting kettle 9
Top and bottom are provided with quick opening valve, the outlet of autoclave 9 by the road, after counterbalance valve 12 and condenser 10 with gas-liquid point
Connected from device 11；Gas-liquid separator 11 outlet by the road, valve 15 be connected with the entrance of drier 2, by gas-liquid separation
Source of the gas after device 11 is separated enters in drier 2 by the road, and the outlet of drier 2 is connected with carbon dioxide air source 1, realizes gas
Body circulation is utilized.
The course of work of the invention：Preparation before plant running include checking source of the gas, sample installation, emptying system,
Booster pump 4 is set and the several steps of container 6 are quantitatively injected.First check for source of the gas, it is ensured that carbon dioxide air source is sufficient, air tight,
Then sample is installed.Sample is installed and refers to sample is fixed on sample stand and is positioned in corrosion reacting kettle 9.Emptying
System refers to closing counterbalance valve 12 and valve 15, and the valve opened on corrosion reacting kettle 9 is passed through gas needed for experiment to corrosion reacting kettle 9
Source, discharges other fluids.Set booster pump 4 and quantitatively injection container 6, including pressure and flow setting.
Normal condition：With booster pump 4 and container 6 quantitatively is injected as starting point, pressure of the supercritical carbon dioxide in booster pump 4
The lower flow forward of effect, enters steam pre- after being fluctuated through quantitative injection container 6 and the regime flow of high pressure constant-flux pump 7 and compensator or trimmer pressure
Hot stove 8 is heated, and reaches specified steam preheating temperature, about 350-650 DEG C；Then fluid is heated by pipeline into kettle
Stove, is heated again by kettle heating furnace, reaches temperature needed for experiment, and enter autoclave 9 by bottom of furnace body.Go out high pressure anti-
Answer the source of the gas of kettle 9 first by counterbalance valve 12, cooled down by condenser 10 after decompression, by fluid condensation, liquefaction.It is condensed
Fluid enters gas-liquid separator 11 by pipeline, then drier 2 is imported by pipeline, so as to realize recycling.
At the end of experiment, gas source valve is first shut off, closes booster pump 4 and quantitatively inject container 6, be then shut off preheating furnace
8th, corrosion reacting kettle 9, corrosion reacting kettle 9 is slowly cooled to room temperature with stove, opens quick opening valve and takes out sample.Normal experiment is general
Experimenter is not needed to intervene, system is by automatic running.
Claims (8)
1. a kind of supercritical carbon dioxide corrosion experimental device, it is characterised in that including carbon dioxide air source (1), preheating furnace (8)
With the corrosion reacting kettle (9) for placing sample, the outlet of carbon dioxide air source (1) through booster pump (4), quantitatively inject container
(6) it is connected with preheating furnace (8) entrance, preheating furnace (8) outlet is connected with corrosion reacting kettle (9) entrance, corrosion reacting kettle (9)
Outlet be connected with cooling system；Temperature-control heat couple for controlling preheating furnace (8) temperature is installed on the preheating furnace (8)
(14)。
2. a kind of supercritical carbon dioxide corrosion experimental device according to claim 1, it is characterised in that the booster pump
(4) it is connected with air compressor (3).
3. a kind of supercritical carbon dioxide corrosion experimental device according to claim 1, it is characterised in that the booster pump
(4) outlet is connected through high pressure storage tank (5) with quantitative injection container (6).
4. a kind of supercritical carbon dioxide corrosion experimental device according to claim 1 or 3, it is characterised in that described fixed
Amount injection container (6) is connected with high pressure constant-flux pump (7).
5. a kind of supercritical carbon dioxide corrosion experimental device according to claim 1, it is characterised in that the corrosion is anti-
Kettle (9) is answered to be arranged in kettle heating furnace.
6. a kind of supercritical carbon dioxide corrosion experimental device according to claim 1, it is characterised in that the corrosion is anti-
Answer kettle (9) top and bottom to be provided with quick opening valve, kettle temperature thermocouple (13) is additionally provided with corrosion reacting kettle (9).
7. a kind of supercritical carbon dioxide corrosion experimental device according to claim 1, it is characterised in that the cooling system
System includes condenser (10) and gas-liquid separator (11), the outlet of autoclave (9) by the road, counterbalance valve (12) and condenser
(10) it is connected with gas-liquid separator (11) afterwards.
8. a kind of supercritical carbon dioxide corrosion experimental device according to claim 7, it is characterised in that the gas-liquid point
From device (11) outlet by the road, valve (15) be connected with the entrance of drier (2), the outlet of drier (2) and titanium dioxide
Carbon source of the gas (1) is connected.
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| CN201710262493.XA CN106896054B (en) | 2017-04-20 | 2017-04-20 | Supercritical carbon dioxide corrosion experimental device |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436260A (en) * | 2017-07-31 | 2017-12-05 | 中国核动力研究设计院 | A kind of HTHP supercritical carbon dioxide slow strain rate test system |
| CN107449728A (en) * | 2017-07-31 | 2017-12-08 | 中国核动力研究设计院 | A kind of HTHP supercritical carbon dioxide homogeneous corrosion pilot system |
| CN107917872A (en) * | 2017-12-01 | 2018-04-17 | 西安交通大学 | Supercritical carbon dioxide corrosion experimental device and method under a kind of stress effect |
| CN108132211A (en) * | 2018-02-24 | 2018-06-08 | 华能国际电力股份有限公司 | A kind of supercritical carbon dioxide corrosion testing apparatus and application method |
| CN109596510A (en) * | 2019-01-07 | 2019-04-09 | 武汉钢铁有限公司 | The detection method of pipe line steel corrosive nature under supercritical carbon dioxide |
| CN110527943A (en) * | 2019-08-06 | 2019-12-03 | 西安交通大学 | The device and method that magnesium and magnesium alloy anticorrosion are handled with supercritical carbon dioxide |
| CN112326484A (en) * | 2020-09-28 | 2021-02-05 | 山东大学 | Supercritical carbon dioxide dynamic rock erosion test system and working method thereof |
| CN112730129A (en) * | 2020-12-21 | 2021-04-30 | 山东大学 | Accelerated test method for dynamic rock erosion by supercritical carbon dioxide |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107436260A (en) * | 2017-07-31 | 2017-12-05 | 中国核动力研究设计院 | A kind of HTHP supercritical carbon dioxide slow strain rate test system |
| CN107449728A (en) * | 2017-07-31 | 2017-12-08 | 中国核动力研究设计院 | A kind of HTHP supercritical carbon dioxide homogeneous corrosion pilot system |
| CN107436260B (en) * | 2017-07-31 | 2019-11-05 | 中国核动力研究设计院 | A kind of high temperature and pressure supercritical carbon dioxide slow strain rate test system |
| CN107917872A (en) * | 2017-12-01 | 2018-04-17 | 西安交通大学 | Supercritical carbon dioxide corrosion experimental device and method under a kind of stress effect |
| CN108132211A (en) * | 2018-02-24 | 2018-06-08 | 华能国际电力股份有限公司 | A kind of supercritical carbon dioxide corrosion testing apparatus and application method |
| CN109596510A (en) * | 2019-01-07 | 2019-04-09 | 武汉钢铁有限公司 | The detection method of pipe line steel corrosive nature under supercritical carbon dioxide |
| CN110527943A (en) * | 2019-08-06 | 2019-12-03 | 西安交通大学 | The device and method that magnesium and magnesium alloy anticorrosion are handled with supercritical carbon dioxide |
| CN110527943B (en) * | 2019-08-06 | 2021-01-19 | 西安交通大学 | Device and method for performing anti-corrosion treatment on magnesium and magnesium alloy by using supercritical carbon dioxide |
| CN112326484A (en) * | 2020-09-28 | 2021-02-05 | 山东大学 | Supercritical carbon dioxide dynamic rock erosion test system and working method thereof |
| CN112730129A (en) * | 2020-12-21 | 2021-04-30 | 山东大学 | Accelerated test method for dynamic rock erosion by supercritical carbon dioxide |
| CN112730129B (en) * | 2020-12-21 | 2022-05-20 | 山东大学 | Accelerated test method for dynamic rock erosion of supercritical carbon dioxide |
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| CN106896054B (en) | 2020-10-30 |
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