CN107966398A - A kind of experimental rig for simulating high temperature corrosion - Google Patents
A kind of experimental rig for simulating high temperature corrosion Download PDFInfo
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- CN107966398A CN107966398A CN201711206120.7A CN201711206120A CN107966398A CN 107966398 A CN107966398 A CN 107966398A CN 201711206120 A CN201711206120 A CN 201711206120A CN 107966398 A CN107966398 A CN 107966398A
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- high temperature
- weighing device
- heating furnace
- temperature corrosion
- corrosion
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N17/00—Investigating resistance of materials to the weather, to corrosion, or to light
- G01N17/006—Investigating resistance of materials to the weather, to corrosion, or to light of metals
Abstract
The present invention relates to a kind of experimental rig for simulating high temperature corrosion, including high temperature corrosion system, air supply system, electric-control system and exhaust treatment system, high temperature corrosion system to include heating furnace and weighing device, and specimen surface is optionally coated with all kinds of corrosivity salt deposits；Air supply system can optionally input all kinds of corrosive gas into heating furnace, and electric-control system includes weigh recording unit and display unit；Recording unit of weighing is able to record the real-time weight of sample and calculates the gain in weight of sample；Display unit can show the high temperature corrosion kinetic curve of acquisition；Exhaust treatment system can be recycled the corrosive gas exported from heating furnace.The experimental rig intelligent automaticization degree of the present invention is high, can corrosion kinetics Dependence Results of the real-time display during simulative corrosion test, high temperature corrosion behavior and corrosion mechanism of the metal material in high-temperature gas, high temperature salt and a variety of Korrosionsmediums and the environment deposited easily are studied for system good guarantee are provided.
Description
Technical field
The present invention relates to a kind of corrosion simulated technical field, and in particular to a kind of experimental rig for simulating high temperature corrosion.
Background technology
With the progress of human civilization, the continuous growth of population and human living standard, the level of urbanization and industry water
The various rubbish such as flat continuous improvement, house refuse, municipal refuse and the industrial refuse of generation are also growing day by day, and are directed to these
The process problem of rubbish is also increasingly serious.Incineration treatment of garbage is realize innoxious solid waste, minimizing and recycling one
Kind effective means, has good Social benefit and economic benefit, is increasingly valued by people.But when burning away the refuse
HCl, Cl can be produced2、SO2, corrosive gas and NaCl, KCl, the Na such as CO2SO4、K2SO4Deng metal deposit salt, to burning facility
Serious high temperature corrosion is caused at the position such as superheater and water-cooling wall, causes trommel, booster etc., greatly reduces making for equipment
Use the service life.At the same time, with the industrial expansions such as the energy, power, petrochemical industry and continuous progressive, the production work of modern science
For skill towards high temperature, maximization development, this all make it that the High Temperature Corrosion of equipment and materials is further prominent.In these industrial productions
Or in experimental study, often it is related to high-temperature oxydation, high-temp chlorination and other high temperature corrosion gases and/or high temperature is rotten
The research or use of corrosion salt, and these materials can cause the equipment of industrial product or experimental facilities serious corrosion, and then
Influence the service life of equipment.Therefore, high temperature corrosion behavior and corruption of the metal material in these Korrosionsmediums are fully understood by
It is particularly significant to lose selection and protection of the mechanism to the various equipment such as garbage incinerating system, the equipment of industrial product or experimental facilities.
Utilize the high temperature corrosion behavior of simulation analysis metal material in specific environment in the lab, be it is apparent its
High temperature corrosion dynamics, discloses its effective method of high temperature corrosion mechanism, and this analogy method has been a concern.The party
The initial form of method is discontinuous weight method：The sample of certain mass and size is placed in heating unit, in specified temp
With holding a period of time postcooling, taking-up in corrosive environment, the front and rear weight change of sample corrosion is weighed, is aided with X-ray and spreads out
Penetrate the high temperature corrosion behavior that the analysis means such as instrument (XRD) and scanning electron microscope (SEM) carry out research material.Since discontinuous weight method needs
Multiple samples are wanted to obtain one group of dynamics data, time-consuming and laborious, therefore, continuous weighting method is gradually developed, that is, is used
Continuous automatic recording balance to monitor the weight change of sample in real time, only needs a sample just to complete whole corrosion kinetics and grinds
Study carefully.While measuring method is developed, the atmosphere of corrosive environment is also from single particular atmosphere progressively to Various Complex atmosphere
Development.
However, existing this continuous weighting simulator is only limitted to the high-temperature gas corrosion research of material, do not have also at present
It is found the continuous measurement experimental rig that can be simulated high-temperature gas corrosion and high temperature salt corrosion and deposit.It is meanwhile existing continuous
Simulation test device intelligent automaticization degree of weighing is low, can not corrosion power of the real-time display during simulative corrosion test
Learn Dependence Results, it is impossible to understand to quicklook the high temperature corrosion behavior of metal material, and then can not system easily study gold
Belong to high temperature corrosion behavior and corrosion mechanism of the material in high-temperature gas, high temperature salt and a variety of Korrosionsmediums and the environment deposited,
Cannot the offer reference such as the selection for equipment, corrosion protection in time.
The content of the invention
(1) technical problems to be solved
In order to solve the above problem of the prior art, the present invention provides a kind of experimental rig for simulating high temperature corrosion, the examination
Experiment device intelligent automaticization degree is high, being capable of corrosion kinetics curve knot of the real-time display during simulative corrosion test
Fruit, can understand to quicklook the high temperature corrosion behavior of metal material, and then easily study metal material in height for system
Wet body, high temperature salt and a variety of Korrosionsmediums and high temperature corrosion behavior in the environment deposited and corrosion mechanism provide safeguard, and
When for the selection of equipment, corrosion protection etc. provide foundation.
(2) technical solution
In order to achieve the above object, the main technical schemes that the present invention uses include：
The present invention provides a kind of experimental rig for simulating high temperature corrosion, it includes：High temperature corrosion system, including heating furnace and
Weighing device, heating furnace are used to provide hot environment for the sample in stove, and weighing device is used to detect in stove in real time
Sample weight, wherein, the surface of sample is optionally coated with all kinds of corrosivity salt deposits；Air supply system, can be selective
Ground inputs all kinds of corrosive gas into heating furnace；Electric-control system, including weigh recording unit and display unit, record of weighing
Member can record the real-time weight of sample in real time and calculate gain in weight of the sample at each moment relative to initial time；Display is single
Member being capable of real-time display test period and the gain in weight based on test period and sample at each moment relative to initial time
The high temperature corrosion kinetic curve of acquisition；Exhaust treatment system, can be recycled the corrosive gas exported from heating furnace
Processing.
According to the present invention, the boiler tube of heating furnace is the hollow structure of both ends open, and weighing device is arranged on boiler tube top
Top, is movably connected on weighing device to sample suspension type, high temperature corrosion system further includes the lifting being connected with weighing device
Mechanism, sample put under the elevating movement driving of elevating mechanism or stretch out in the boiler tube of heating furnace.
According to the present invention, electric-control system further includes the elevating mechanism control unit being connected with elevating mechanism, elevating mechanism control
Unit processed can control elevating mechanism elevating movement, and drive dress of weighing according to the lifting speed and lifting distance parameter of input
Realization is put to move up and down.
According to the present invention, high temperature corrosion system further includes the weighing device case for being built-in with weighing device, and weighing device case is
The enclosed housing structure being made of head cover and base, the through hole that connect can be formed with boiler tube by offering on base, for supplying
The suspender of suspension sample passes through；The side wall of weighing device case is connected with elevating mechanism.
According to the present invention, cooling zone is provided between the lower part of weighing device case and the top of boiler tube, is come from for cooling down
The high temperature corrosion gas of heating furnace；Formed and be tightly connected between the bottom of cooling zone and the top of boiler tube；One bodily form of cooling zone
Into on the base in weighing device case, weighing device is removably disposed on cooling zone；Cooling zone passes through pipeline and tail gas
Processing system is connected.
According to the present invention, the boiler tube bottom of heating furnace is connected with the second sealing flange, offered on the second sealing flange with
The air inlet that air supply system is connected；Positioned at the lower section of air inlet, sealing is embedded with lens, the second Sealing Method in second sealing flange
Blue bottom terminal ends are equipped with monitor, and electric-control system further includes supervising data storage unit, supervising data storage unit and monitoring
Device connects, for storing monitored picture in stove；Display unit is connected with monitor and supervising data storage unit, for aobvious in real time
Show monitored picture in stove.
According to the present invention, air supply system includes being used for the multiple caissons for storing all kinds of corrosive gas, each gas storage
Device passes sequentially through respective bye-pass and mixed pipe line and is connected with the air inlet on the second sealing flange, connects each gas storage
Mass flowmenter is each provided with the bye-pass of device, connects and is provided with gas mixer on the mixed pipe line of each bye-pass；Electricity
Control system includes gas flow rate control unit, and gas flow rate control unit is connected with each mass flowmenter, can be according to input
Each gas flow parameter, control mass flowmenter are measured.
According to the present invention, the center flat-temperature zone of heating furnace is provided with temperature-control heat couple, and electric-control system further includes and temperature control heat
The control temperature unit of galvanic couple connection, control temperature unit can control heating furnace heating, at the same time according to the predetermined test temperature parameter of input
Temperature-control heat couple can be controlled to detect in-furnace temperature in real time to change and record the temperature in stove；Display unit can also real-time display
Temperature in predetermined test temperature and stove.
According to the present invention, it is provided with thermal insulation material, temperature-control heat couple is installed on the boiler tube tube wall periphery parcel of heating furnace
In thermal insulation material；Calandria is equipped with thermal insulation material, calandria is silicon-carbon calandria or molybdenum dioxide calandria.
According to the present invention, exhaust treatment system includes absorption tower, and the bottom on absorption tower is connected with cooling zone, in absorption tower
Multiple partition plates in formula arrangement of wriggling along longitudinal direction are provided with, is equipped with absorption tower and absorbs lye, carry out self-heating for dissolving and absorbing
The tail gas of stove.
(3) beneficial effect
The beneficial effects of the invention are as follows：
The experimental rig of the present invention can optionally input all kinds of corrosive gas from air supply system into heating furnace, together
When sample surface be optionally coated with all kinds of corrosivity salt deposits, and heating furnace can provide high temperature ring for the sample in stove
Border, thus, experimental rig of the invention can simulate high-temperature gas, high temperature salt and a variety of Korrosionsmediums and the corrosion ring deposited
Border.
Simultaneously because the weighing device for the weight that can detect sample in real time is equipped with high temperature corrosion system, and automatically controlled
Be equipped with and weigh recording unit in system, be able to record the real-time weight of sample and calculate sample each moment relative to it is initial when
The gain in weight at quarter, while display unit being capable of real-time display test period and the high temperature based on test period and gain in weight acquisition
Corrosion kinetics curve.Thus, experimental rig intelligent automaticization degree of the invention is high, additionally it is possible to which real-time display is high in simulation
Corrosion kinetics Dependence Results during warm corrosion test, can understand to quicklook the high temperature corrosion row of metal material
For, and then metal material is easily studied in high-temperature gas, high temperature salt and a variety of Korrosionsmediums and the environment deposited for system
High temperature corrosion behavior and corrosion mechanism provide safeguard, be in time the selection of equipment, corrosion protection etc. foundation is provided.
Brief description of the drawings
Fig. 1 is the structure diagram of the experimental rig of the simulation high temperature corrosion provided in following examples；
Fig. 2 is the structure diagram of the high temperature corrosion system of the experimental rig of the simulation high temperature corrosion shown in Fig. 1；
Fig. 3 is the structure diagram of the air supply system of the experimental rig of the simulation high temperature corrosion shown in Fig. 1；
Fig. 4 is the structure diagram of the electric-control system of the experimental rig of the simulation high temperature corrosion shown in Fig. 1；
Fig. 5 is the structure diagram of the exhaust treatment system of the experimental rig of the simulation high temperature corrosion shown in Fig. 1；
Fig. 6 is a variety of deposition salt for obtaining and high temperature corrosion kinetic curve when depositing in following examples 1；
Fig. 7 is the multiple gases that obtain and high temperature corrosion dynamic curve diagram when depositing in following examples 2；
Fig. 8 is a variety of deposition salt for obtaining and multiple gases and high temperature corrosion dynamics when depositing is bent in following examples 3
Line chart.
【Description of reference numerals】
I：Air supply system；Ⅱ：High temperature corrosion system；Ⅲ：Electric-control system；Ⅳ：Exhaust treatment system；1：Gas bomb；2：Subtract
Pressure valve；3：Mass flowmenter；4：Cyclone gas mixer；5：Vacuum pump；6：Air-supplying valve；7：Vavuum pump valve；8：Vacuum meter
Valve；9：Vacuum meter；10：Weighing device case；11：Weighing device；12：Separate type binding post；13：Lift actuator；14：Column
Formula track；15：Exhausting-gas hole；16：Cooling zone；A：Refrigerant inlet；B：Refrigerant exit；17：Through hole；18：Hang silk；19：Heating furnace；
20：First sealing flange；21：Temperature-control heat couple；22：Second sealing flange；23：Air inlet；24：Lens；25：Monitor；26：
Sample；27：Auxiliary strut；28：First auxiliary support plate；29：Second auxiliary support plate；30：3rd auxiliary support plate；31：The
Four auxiliary support plates；32：Elevating mechanism control unit；33：Weigh recording unit；34：Control temperature unit；35：Supervising data storage
Unit；36：Pumped vacuum systems control unit；37：Gas flow rate control unit；38：Air supply system control unit；39：Display is single
Member；40：Absorption tower valve.
Embodiment
In order to preferably explain the present invention, in order to understand, below in conjunction with the accompanying drawings, by embodiment, to this hair
It is bright to be described in detail.
With reference to Fig. 1, the present embodiment provides a kind of experimental rig for simulating high temperature corrosion, it is rotten that it includes air supply system I, high temperature
Erosion system II, electric-control system III and exhaust treatment system IV.
Wherein, high temperature corrosion system II includes heating furnace 19 and weighing device 11, and heating furnace 19 is used to be in stove
Sample 26 provides hot environment, and weighing device 11 is used for the weight for detecting the sample 26 in stove in real time, wherein, sample 26
Surface is optionally coated with all kinds of corrosivity salt deposits.
Air supply system I can optionally input all kinds of corrosive gas into heating furnace 19.
Electric-control system III, including weigh recording unit 33 and display unit 39, recording unit of weighing 33 are able to record experiment
The initial weight of sample 26 in time, stove, during experiment the real-time weight of sample 26 and calculate the real-time weight of sample 26 with
The difference of initial weight, i.e., each moment relative to initial time gain in weight.It should be noted that recording unit 33 of weighing is counted
Several time intervals can be preset.
Display unit 39 can real-time display test period, the setting time interval of input, in stove sample 26 first starting weight
Amount, the gain in weight of the real-time weight of sample 26, sample 26 at each moment relative to initial time, and based on test period and
The high temperature corrosion kinetic curve that sample 26 obtains at each moment relative to the gain in weight of initial time.It should be noted that
Here the abscissa of high temperature corrosion kinetic curve is test period, and ordinate is unit area sample 26 in each moment phase
For the gain in weight of initial time.
Exhaust treatment system IV can future self-heating stove 19 high temperature corrosion gas recycled.Due to from adding
Hot stove 19 exports various pernicious gases, therefore sets exhaust treatment system IV to primarily serve the absorption to these pernicious gases
Filter, and then the effect of environmental protection.
To sum up, the experimental rig of the present embodiment can optionally input all kinds of corruption from air supply system I into heating furnace 19
Corrosion gas, while the surface of sample 26 is optionally coated with all kinds of corrosivity salt deposits, and heating furnace 19 can be in stove
Sample 26 hot environment is provided, therefore the high temperature coated on the surface of sample 26 after all kinds of corrosivity salt deposits in heating furnace 19 adds
The lower corrosive environment that can individually simulate high temperature salt of heat；If being passed through corrosive gas into heating furnace 19 at the same time, the corrosivity gas
Body is then changed into high-temperature gas under the high-temperature heating of heating furnace 19, and then can simulate high temperature salt and high-temperature gas and the corrosion deposited
Environment；If being not coated by all kinds of corrosivity salt deposits on the surface of sample 26, corrosive gas is only passed through into heating furnace 19, then can be with
The individually corrosive environment of simulation high-temperature gas.Thus, the experimental rig of the present embodiment can simulate high-temperature gas, high temperature salt and
A variety of Korrosionsmediums and the high-temperature corrosion environment deposited.
Simultaneously because the weight weighing device 11 that can detect sample 26 in real time is equipped with high temperature corrosion system II, and
It is equipped with and weighs recording unit 33 in electric-control system III, is able to record the initial weight of sample 26 in test period and stove and can
Calculate gain in weight of the sample 26 at each moment relative to initial time, at the same display unit 39 can real-time display experiment when
Between, the initial weight of sample 26 in stove, in stove sample 26 real-time weight, and based on test period and sample 26 when each
Carve the high temperature corrosion kinetic curve obtained relative to the gain in weight of initial time.
Thus, the experimental rig intelligent automaticization degree in the present embodiment is high, additionally it is possible to which real-time display is corroded in simulation
Corrosion kinetics Dependence Results during experiment, can understand to quicklook the high temperature corrosion behavior of metal material, and then
It is rotten that high temperature of the metal material in high-temperature gas, high temperature salt and a variety of Korrosionsmediums and the environment deposited easily is studied for system
Erosion behavior and corrosion mechanism provide safeguard, and the selection for equipment, corrosion protection etc. in time provides foundation.
Further, with reference to Fig. 2, the boiler tube of heating furnace 19 is the hollow structure of both ends open, and weighing device 11 is arranged on
The top on boiler tube top, high temperature corrosion system II further include the elevating mechanism being connected with weighing device 11,26 suspension type of sample
It is movably connected on weighing device 11, sample 26 can put under the elevating movement of elevating mechanism driving or stretch out heating furnace 19
Boiler tube in.When starting to simulate high temperature corrosion experiment, sample 26 is put in the boiler tube of heating furnace 19, and when completing, simulation high temperature is rotten
During corrosion test, sample 26 stretches out the boiler tube of heating furnace 19.Preferably, sample 26 is connected by hanging silk 18 with weighing device 11,
It can be convenient to picking and placeing for sample 26.It is further preferred that detachable connecting device is used in the centre of hanging silk 18, for example with
Hook, being capable of picking and placeing more convenient for sample 26.It should be noted that the surface of sample 26 needs to coat all kinds of corrosivity salt deposits
When, after the coating salt deposit of experiment 26, first sample 26 should be loaded in crucible, then the bottom with hanging silk 18 is connected, and then prevent
Salt deposit comes off, and influences the actual weight of sample 26.Sample 26 can be directly placed into crucible, then by crucible directly with hanging silk 18
Bottom connection, at this time crucible play the role of holding sample 26, while also can the access salt and corrosion layer that come off.Certainly, try
Sample 26 can be also suspended in crucible, sample 26 and crucible are connected with hanging the bottom of silk 18 at the same time, crucible plays access at this time
The effect of the salt and corrosion layer that come off.
Further, electric-control system III further includes the elevating mechanism control unit 32 being connected with elevating mechanism, elevating mechanism
Control unit 32 can control elevating mechanism elevating movement, and drive title according to the lifting speed and lifting distance parameter of input
Refitting is put 11 realizations and is moved up and down.It is movably connected in due to 26 suspension type of sample on weighing device 11, elevating mechanism energy
Enough drive weighing device 11 to realize to move up and down, and then sample 26 can be driven to realize and moved up and down.Thus, the examination in the present embodiment
Experiment device can input lifting speed and lifting distance parameter because being equipped with elevating mechanism and elevating mechanism control unit 32,
And then more accurate stable control the lifting of weighing device 11, easy to operate more convenient for picking and placeing for sample 26, the degree of automation
It is high.
Further, high temperature corrosion system II further includes weighing device case 10, and weighing device case 10 is by head cover and base
The enclosed housing structure of composition, the perforation that connect can be formed with boiler tube by offering on base, for for hanging sample 26
Suspender passes through.Weighing device 11 is preferably precision electronic balance, by increasing capacitance it is possible to increase weighing device 11 weighs the weight of sample 26
Accuracy, makes experimental result more accurate.Weighing device 11 is detachably arranged in weighing device case 10, and then is convenient to weigh
The dismounting of device 11.It is preferably to be detachably connected between the head cover and base of weighing device case 10, more convenient for weighing device 11
Pick and place.Above-mentioned base is the semi-enclosed body structure that a upper end has opening in attached drawing 1 and Fig. 2, certainly can be with
It is the other structures that can be supported weighing device 11 and enclosed housing is formed with head cover.
The side wall of weighing device case 10 is connected with elevating mechanism, and being additionally provided with separate type on the side wall of weighing device case 10 connects
Terminal 12, one end of the separate type binding post 12 are connected with the data cable of weighing device 11, and the other end is by data cable with weighing
Recording unit 33 connects.Herein it should be noted that separate type mentioned here refers to the separate type binding post 12 with weighing
Device 11 and weigh recording unit 33 be it is detachably connected, so need take out weighing device 11 when then can be by data
Line first disconnects with separate type binding post 12 and further takes out weighing device 11, simple to operate.
Further, cooling zone 16 is provided between the lower part of weighing device case 10 and the top of boiler tube, is come for cooling down
The high temperature corrosion tail gas of self-heating stove 19.Cooling zone 16 has housing and is internally formed to be connected with weighing device case 10 and boiler tube
The cooling zone 16 of logical cavity.Specifically, the cover top plate of cooling zone 16 and bottom plate respectively offer one be connected with cavity it is logical
Hole 17, two through holes 17 run through whole cooling zone 16, the bottom of cooling zone 16 for the suspender of suspension sample 26 (such as hanging silk 18)
Formed and be tightly connected between plate and the top of boiler tube, offered in the housing sidewall of cooling zone 16 and be connected with exhaust treatment system IV
Exhausting-gas hole 15.Thus, because the setting of cooling zone 16 can preferably avoid whole babinet from overheating, and then weighing device 11 is avoided
It is damaged because of overheat.
Specifically, cooling zone 16 is located in weighing device case 10, and integrative-structure is formed with the base in weighing device case 10,
Weighing device 11 is removably disposed on the top plate of cooling zone 16, so when elevating mechanism moves up and down, while drives title
Weighing device 11 in case 10 is put in refitting and cooling zone 16 is realized move up and down together.
It is further preferred that the housing of cooling zone 16 is the hollow structure for coolant media circulation, housing enters with refrigerant
Mouth and refrigerant exit show that coolant media is preferably cooling water, cost-saved with label A, B respectively in fig. 2.
Further, elevating mechanism includes multiple tracks and multiple lift actuators 13, each lift actuator 13
Match somebody with somebody with a track and merge and can move linearly along the track.The top of multiple tracks is connected with the first auxiliary support plate 28,
Lateral wall of multiple lift actuators 13 with weighing device case 10 is connected, while multiple lift actuators 13 are gone back and elevating mechanism
Control unit 32 connects, and elevating mechanism control unit 32 can control lift actuator 13 to move along a straight line along track, and drive
Weighing device 11 is realized and moved up and down.Preferably, which is column track 14.
It is further preferred that elevating mechanism includes four lift actuators 13 and four column tracks 14, and four rise
Drop driver 13 and four column tracks 14 are symmetrically distributed in the both sides of weighing device case 10, can be more preferable per each two of side
Ground ensures that stablizing for weighing device case 10 lifts, and then can adjust to free and stable the upper-lower position of weighing device case 10, just
In picking and placeing for sample 26 and picking and placeing for weighing device 11.
Further, the boiler tube bottom of heating furnace 19 is connected with the second sealing flange 22, on 22 side of the second sealing flange
The air inlet 23 being connected with air supply system I is offered, is sealed in the second sealing flange 22 positioned at the lower section of air inlet 23 embedded
Lens 24 are provided with, the bottom terminal ends of the second sealing flange 22 are provided with monitor 25, for monitoring the situation in stove in real time.It is excellent
Selection of land, monitor 25 are high-definition digital monitor, can make clarity higher, be more convenient for observing.It should be noted that here
24 one side of lens play and the picture in stove can be further amplified so that monitored picture becomes apparent from, another aspect lens
24 can also play and prevent corrosive gas from flowing on monitor 25 or flowing in air, and then monitor 25 is caused necessarily
Corrosion or air is polluted.
Electric-control system III further includes supervising data storage unit 35, and supervising data storage unit 35 is connected with monitor 25,
For storing monitored picture in stove, display unit 39 is connected with monitor 25 and supervising data storage unit 35, for aobvious in real time
Show monitored picture in stove, and the monitored picture of storage can be had access at any time.Therefore, the experimental rig in the present embodiment is because equipped with monitoring
Device 25 and supervising data storage unit 35, while be additionally provided with display unit 39, real-time display and can store the monitoring picture in stove
Face, more convenient for observing the state of sample 26.
The boiler tube top of heating furnace 19 is tightly connected, it is necessary to illustrate by the first sealing flange 20 and the bottom plate of cooling zone 16
, when driving the realization of weighing device case 10 to move up and down using elevating mechanism, it is necessary to first dismantle the first sealing flange 20
Lifting is realized again.
Further, the center flat-temperature zone of heating furnace 19 is provided with temperature-control heat couple 21, and electric-control system III further includes temperature control
Unit 34 and it is connected with temperature-control heat couple 21, control temperature unit 34 can control heating furnace 19 according to the predetermined test temperature of input
Heating, while temperature-control heat couple 21 can be controlled to detect the temperature change in stove in real time and record the temperature in heating furnace 19, show
Show the temperature that unit 39 can also be in the predetermined test temperature of real-time display and heating furnace 19, in order to understand the temperature in stove in time
Degree situation of change simultaneously makes correspondingly adjustment (the staged heating that can such as realize heating furnace 19) in time, and the degree of automation is high,
It is directly perceived and highly practical.
Further, it is provided with thermal insulation material the tube wall periphery parcel of boiler tube, and the inner wall of thermal insulation material and boiler tube
At least spacing of 2mm is equipped between outer wall, to facilitate the taking-up of boiler tube.Temperature-control heat couple 21 is installed in thermal insulation material, insulation
Calandria is equipped with material, for predetermined test temperature will to be heated in boiler tube.Herein it should be noted that calandria uses
Well known to a person skilled in the art mode to be located in thermal insulation material, such as can be punched in thermal insulation material, then calandria is inserted
Enter wherein.Heat insulation effect well can be played to boiler tube equipped with thermal insulation material to being heated in boiler tube after calandria energization,
Prevent scattering and disappearing and influencing final result of the test for heat.
It is further preferred that boiler tube uses corundum furnace tube, calandria uses four U-shaped Elema calandrias, temperature control thermoelectricity
Even 21 use double platinum rhodium type thermocouple.Using corundum furnace tube, possesses excellent thermal conductivity, the heat that can produce calandria is quick
It is delivered in boiler tube.And the length of calandria can be extended in equal spatial dimension using U-shaped calandria, make firing rate more
It hurry up, and form wider more stable flat-temperature zone.Wherein, the maximum heating temperature of the U-shaped Elema calandria is up to 1300 DEG C.Compared with
For maximum heating temperature of the prior art, the accessible maximum heating temperature higher of the calandria in the present embodiment, i.e.,
Can meet that the needs of wider analog temperature scope is (mentioned here wider to refer to that heating-up temperature reach higher, Jin Erkuo
Wide analog temperature scope).
Certain the present embodiment is also not limited to this, and calandria can also use molybdenum disilicide calandria, and the calandria is most
High heating-up temperature can reach 1600 DEG C or so.It should be noted that the selection of temperature-control heat couple 21 and thermal insulation material is
According to the material selection of calandria, because the different attainable maximum heating temperatures of calandria institute is different, that is, add
Thermal energy power is different, therefore the requirement to temperature-control heat couple 21 and thermal insulation material is also different.Therefore, the experiment in the present embodiment
The calandria of device reasonably selects temperature control because that can select silicon-carbon calandria or molybdenum disilicide calandria, and according to calandria used
Thermocouple 21 and thermal insulation material, thus, it is possible to meet the needs of wider analog temperature scope, and the demand of wider flat-temperature zone.
Further, heating furnace 19 is located between the second auxiliary support plate 29 and the 3rd auxiliary support plate 30, the second auxiliary
Bottom of the support plate 29 also with multiple tracks is connected.The both ends of boiler tube are each passed through the second auxiliary support plate 29 and the 3rd auxiliary branch
Fagging 30, final both ends are connected with the first sealing flange 20 and the second sealing flange 22 respectively.It is appreciated that in the second auxiliary branch
Through hole is respectively equipped with order to which boiler tube passes through on 29 and the 3rd auxiliary support plate 30 of fagging.In the lower section of the second sealing flange 22 also
Equipped with the 4th auxiliary support plate 31, and pass through multiple 27 and second auxiliary support plates 29 of auxiliary strut and the 3rd auxiliary support plate 30
Connection.Preferably by four auxiliary struts 27, play the role of stablizing support to whole high temperature corrosion system II.
Further, corrosive gas air supply system and protective gas air supply system are included with reference to Fig. 3, air supply system I,
Corrosive gas air supply system can optionally input all kinds of corrosive gas, protective gas supply system into heating furnace 19
System optionally can input protective gas into heating furnace 19.Electric-control system III further includes air supply system control unit 38,
It is capable of the opening and closing of control corrosion rate gas air supply system and protective gas air supply system.Tested when completing simulation high temperature corrosion
When, corrosive gas air supply system is closed, stops inputting corrosive gas into heating furnace 19, opens protective gas supply system
System, inputs protective gas, to drain corrosive gas into heating furnace 19.It is herein it should be noted that mentioned here
Protective gas can be the inert gases such as nitrogen or argon gas, and this is not restricted.
Further, air supply system I includes being used for the multiple gas storage dress for storing all kinds of corrosive gas or protective gas
Put, each caisson passes sequentially through respective bye-pass and mixed pipe line and is connected with the air inlet 23 on the second sealing flange 22
It is logical, connect and pressure reducing valve 2 and mass flowmenter 3 are each provided with the bye-pass of each caisson, connect the mixing of each bye-pass
Gas mixer is provided with pipeline, gas mixing can be made uniform.Electric-control system III includes gas flow rate control unit 37, gas
Flow controlling unit 37 is connected with each mass flowmenter 3, can control mass flowmenter according to each gas flow parameter of input
3 are measured.Preferably, caisson is gas bomb 1, and certain caisson can also be other storage devices.In gas bomb 1
It is respectively provided with the N needed for experiment2、SO2、O2Or the gas such as HCI, the gas that the quantity and needs of certain gas bomb 1 store are not done
Limit, depending on actual needs.Gas mixer is preferably cyclone gas mixer 4, can make gas mixing more
Uniformly, so can more realistically simulate rubbish burn when various mixed gases corrosive environment.
Therefore, the experimental rig in the present embodiment is abundant thus, it is possible to which gas is carried out because being equipped with cyclone gas mixer 4
It is passed into high temperature corrosion system II, is uniformly mixed again after mixing；At the same time in the present embodiment experimental rig because of each caisson
Mass flowmenter 3 is equipped with, and gas flow rate control unit 37 can control quality stream according to each gas flow parameter of input
Gauge 3 is measured, and thus, it is possible to independently accurately control the flow and ratio of every kind of gas, and then can reach preferably mixed
Effect is closed, easy to operate, the degree of automation is high.
Further, on mixed pipe line pumped vacuum systems is connected between gas mixer and high temperature corrosion system II
With air-supplying valve 6, air-supplying valve 6 is used for controlling the opening and closing of air supply system I, and pumped vacuum systems can be selectively to high temperature corrosion system
System II vacuumizes.Electric-control system III further includes pumped vacuum systems control unit 36 at the same time, can control the opening and closing of pumped vacuum systems,
Preferably, pumped vacuum systems is vacuum pump 5 and vavuum pump valve 7, and is additionally provided between vacuum pump 5 and high temperature corrosion system II
Vacuum meter 9 and vacuum meter valve 8, set vacuum meter 9 to be used for showing the vacuum in high temperature corrosion system II, in order to more
The vacuum situation being visually known in high temperature corrosion system II.
Therefore, the experimental rig in the present embodiment because being equipped with vacuumizing of being vacuumized to high temperature corrosion system II
System, it is possible thereby to high temperature corrosion system II carry out vacuumize process, prevent II internal cause of high temperature corrosion system there are air etc. its
His foreign gas and influence the degree of purity in high temperature corrosion system II, and then influence the accuracy of result of the test.
Further, absorption tower is included with reference to Fig. 5, exhaust treatment system IV, the bottom on absorption tower has tail gas air inlet
With absorption tower valve 40, top has tail gas gas outlet, and tail gas air inlet is connected with the exhausting-gas hole 15 of cooling zone 16, absorption tower
The multiple partition plates arranged along longitudinal direction in sinuous formula are inside provided with, is equipped with absorption tower and absorbs lye, are added for dissolving and absorbing to come from
The tail gas of hot stove 19.
It should be noted that should be by with certain anti-between the exhausting-gas hole 15 of tail gas air inlet and cooling zone 16
Pressure energy power and corrosion-resistant and can bend mobile pipe fitting connection, such as bellows, is lifted with being more convenient to realize in weighing device 11
When can also drive pipe fitting to be moved.Therefore, the experimental rig in the present embodiment is because in the absorption tower of exhaust treatment system IV
Equipped with multiple partition plates along longitudinal direction in formula arrangement of wriggling, tail gas is fully absorbed it is possible thereby to realize, and then be more advantageous to ring
Protect.
Further, it is a power control cabinet in III main body of electric-control system, display unit 39 is located at power control cabinet with reference to Fig. 4
In order to intuitively observe on lateral wall, at the same in electric-control system III all controls (including elevating mechanism control unit 32,
Recording unit of weighing 33, control temperature unit 34, supervising data storage unit 35, pumped vacuum systems control unit 36, gas flow control
Unit 37, air supply system control unit 38 and display unit 39 processed) controlled by special control software, this specially controls soft
Part can make each unit realize above-mentioned control function.It should be noted that for some parameters input (including lifting
The parameters such as speed, lifting distance, in-furnace temperature, the flow of every kind of gas, test period, setting time interval) can directly it lead to
Input through keyboard is crossed, can also be on display unit 39 by touch screen key input, this is not restricted.
Therefore, the experimental rig in the present embodiment because equipped with special control software come control elevating mechanism control unit 32,
Recording unit of weighing 33, control temperature unit 34, supervising data storage unit 35, pumped vacuum systems control unit 36, gas flow control
The work of unit 37 processed, air supply system control unit 38 and display unit 39, thus the experimental rig in the present embodiment can be real
When show and record test period, the setting time interval of input, in stove the initial weight of sample 26, sample 26 real-time weight
Amount, gain in weight of the sample 26 at each moment relative to initial time, and the high temperature corrosion kinetic curve obtained, Neng Goushi
When show temperature in predetermined test temperature program and heating furnace 19, while can also in real-time display stove monitored picture and with
When have access to the monitored picture of storage, the degree of automation is high, while integrated level is high.Meanwhile all data of record are with the shape of file
Formula is stored in electric-control system III, flash disk or optical disc copy can be used at any time, in order to experimental data subsequent treatment.
Further, the material of weighing device case 10 and each flange uses high corrosion resisting stainless steel, each connecting pipe
Material use high corrosion resistant material, prevent being corroded property dielectric corrosion.
Further, each interface of whole experimental rig is carried out using measures such as fluid sealant, airtight and watertight padding, rubber cushions
Stringent sealing, to ensure that pernicious gas and reaction volatile matter are not revealed during entirely testing.
Below by exemplified by simulating in waste incineration environment high temperature corrosion situation of the different Korrosionsmediums to sample 26,
The application method and the course of work of the experimental rig in the present embodiment is discussed in detail, it will be appreciated by a person skilled in the art that
Experimental rig in the present embodiment is not limited to the environment of simulation waste incineration.
Embodiment 1：
In the present embodiment main analog waste incineration environment it is a variety of deposition salt and deposit high temperature corrosions experiment, specifically include as
Lower step：
Step 1：Cooling water switch and power control cabinet power supply are opened, heating schedule is set in special control software, will heat
Temperature in stove 19 rises to 800 DEG C.
Step 2：It is respectively 1m/min and 0.5m that the rate of climb and climb are inputted in special control software, will be claimed
Refitting is put case 10 and is risen.The surface of super austenitic stainless steel 254SMO samples 26 is uniformly applied into salt (40%NaCl+40%KCl+
10%Na2SO4+ 10%K2SO4) load afterwards in corundum crucible, hang over the bottom of the hanging silk 18 of connection weighing device 11.Special
It is respectively 1m/min and 0.5m with decrease speed and dropping distance is inputted in control software, weighing device case 10 is landed, locks
And the first sealing flange 20 of good seal connection weighing device case 10 and boiler tube.Step 3：Close air-supplying valve 6,5 valve of vacuum pump
Door and vacuum meter valve 8, open absorption tower valve 40, open monitor 25, click on " ON " icon, start to test.It is small to test 120
Shi Hou, opens the cylinder valve and air-supplying valve 6 of gas bomb 1, argon flow amount is set as 500mL/min in special control software,
5min is ventilated into heating furnace 19 until draining corrosive gas.The cylinder valve of gas bomb 1 is closed, clicks on " OFF " icon, closes control
Warm program and monitor 25.It is respectively 1m/min and 0.5m that the rate of climb and climb are inputted in special control software, is incited somebody to action
Weighing device case 10 rises, and takes out sample 26.
Herein it should be noted that here first closing air-supplying valve 6,5 valve of vacuum pump and vacuum meter valve 8 and elder generation
Absorption tower valve 40 is opened, is in order to which the gaseous product for making to produce in experimentation is arranged to exhaust treatment system IV.
Step 4：After taking out sample 26, all valves (including air-supplying valve 6,5 valve of vacuum pump, vacuum meter valve are closed
8 and absorption tower valve 40), close power control cabinet power supply, system closes cooling water switch after being cooled to room temperature.
A variety of deposition salt for finally obtaining and high temperature corrosion kinetic curve when depositing is as shown in Figure 6.
Embodiment 2：
Multiple gases and the high temperature corrosion experiment deposited, specifically include as follows in the present embodiment main analog waste incineration environment
Step：
Step 1：Cooling water switch and power control cabinet power supply are opened, heating schedule is set in special control software, will heat
Temperature in stove 19 rises to 800 DEG C.
Step 2：It is respectively 1m/min and 0.5m that the rate of climb and climb are inputted in special control software, will be claimed
Refitting is put case 10 and is risen.Super austenitic stainless steel 254SMO samples 26 are hung over to the bottom of the hanging silk 18 of connection weighing device 11
End.It is respectively 1m/min and 0.5m that decrease speed and dropping distance are inputted in special control software, and weighing device case 10 is dropped
Fall, lock simultaneously the first sealing flange 20 of good seal connection weighing device case 10 and boiler tube.
Step 3：Air-supplying valve 6 and absorption tower valve 40 are closed, opens 5 valve of vacuum pump and vacuum meter valve 8, is opened
Vacuum pump 5 vacuumizes system, when the registration of vacuum meter is reached within 100Pa, closes vacuum pump 5, closes 5 valve of vacuum pump
Door, opens air-supplying valve 6, all kinds of gas flows is set in special control software：N2284.7mL/min, SO2 0.06mL/
Min, O215mL/min, HCl 0.24mL/min, open cyclone gas mixer 4, the cylinder valve of gas bomb 1 are opened, to heating furnace
Gas is passed through in 19, after the registration of vacuum meter up to closing vacuum meter valve 8 after an atmospheric pressure, absorption tower valve 40 is opened, opens
Monitor 25 is opened, " ON " icon is clicked on, starts to test.Test 120 it is small when after, close SO2、O2With the cylinder valve of HCl gases, keep
N2Cylinder valve open, by N in special control software2Flow set is 500mL/min, into heating furnace 19 ventilate 10min until
Drain corrosive gas.
The cylinder valve and cyclone gas mixer 4 of gas bomb 1 are closed, clicks on " OFF " icon, closes temperature control program and monitor
25.It is respectively 1m/min and 0.5m that the rate of climb and climb are inputted in special control software, by 10 liters of weighing device case
Rise, take out sample 26.
It is tail when vacuumizing in order to prevent it should be noted that in this step, first closing absorption tower valve 40
Absorbing liquid in gas processing system IV blows back into high temperature corrosion system II.
Step 4：After taking out sample 26, all valves (including air-supplying valve 6,5 valve of vacuum pump, vacuum meter valve are closed
8 and absorption tower valve 40), close power control cabinet power supply, system closes cooling water switch after being cooled to room temperature.
The multiple gases that finally obtain and high temperature corrosion kinetic curve when depositing is as shown in Figure 7.
Embodiment 3
Multiple gases and deposition salt and the high temperature corrosion experiment deposited in the present embodiment main analog waste incineration environment, specifically
Include the following steps：
Step 1：Cooling water switch and power control cabinet power supply are opened, heating schedule is set in special control software, will heat
Temperature in stove 19 rises to 800 DEG C.
Step 2：It is respectively 1m/min and 0.5m that the rate of climb and climb are inputted in special control software, will be claimed
Refitting is put case 10 and is risen.The surface of super austenitic stainless steel 254SMO samples 26 is uniformly applied into salt (40%NaCl+40%KCl+
10%Na2SO4+ 10%K2SO4) load afterwards in corundum crucible, hang over the bottom of the hanging silk 18 of connection weighing device 11.Special
It is respectively 1m/min and 0.5m with decrease speed and dropping distance is inputted in control software, weighing device case 10 is landed, locks
And the first sealing flange 20 of good seal connection weighing device case 10 and boiler tube.
Step 3：Valve air-supplying valve 6 and absorption tower valve 40 are closed, opens 5 valve of vacuum pump and vacuum meter valve 8,
Open vacuum pump 5 to vacuumize system, when the registration of vacuum meter is reached within 100Pa, close vacuum pump 5, close vacuum
5 valves are pumped, air-supplying valve 6 is opened, all kinds of gas flows is set in special control software：N2189.8mL/min, SO2
0.04mL/min, O210mL/min, HCl 0.16mL/min, open cyclone gas mixer 4, open the cylinder valve of gas bomb 1,
Gas is passed through into heating furnace 19, after the registration of vacuum meter up to closing vacuum meter valve 8 after an atmospheric pressure, opens absorption tower valve
Door 40, opens monitor 25, clicks on " ON " icon, starts to test.Test 120 it is small when after, close SO2、O2With the bottle of HCl gases
Valve, keeps N2Cylinder valve open, by N in special control software2Flow set is 500mL/min, is ventilated into heating furnace 19
10min is until drain corrosive gas.
The cylinder valve and cyclone gas mixer 4 of gas bomb 1 are closed, clicks on " OFF " icon, closes temperature control program and monitor
25.It is respectively 1m/min and 0.5m that the rate of climb and climb are inputted in special control software, by 10 liters of weighing device case
Rise, take out sample 26.
Step 4：After taking out sample 26, all valves (including air-supplying valve 6,5 valve of vacuum pump, vacuum meter valve are closed
8 and absorption tower valve 40), close power control cabinet power supply, system closes cooling water switch after being cooled to room temperature.
The a variety of deposition salt and multiple gases that finally obtain and high temperature corrosion kinetic curve when depositing is as shown in Figure 8.
More than, only it is presently preferred embodiments of the present invention, is not the limitation that other forms are done to invention, it is any to be familiar with
Professional and technical personnel is changed or is modified as the equivalence enforcement of equivalent variations possibly also with the technology contents of the disclosure above
Example.But it is every without departing from technical solution of the present invention content, what the technical spirit according to the present invention made above example appoints
What simple modification, equivalent variations and remodeling, still falls within the protection domain of technical solution of the present invention.
Claims (10)
1. a kind of experimental rig for simulating high temperature corrosion, it is characterised in that it includes：
High temperature corrosion system (II), including heating furnace (19) and weighing device (11), the heating furnace (19) are used to be positioned at stove
Interior sample (26) provides hot environment, and the weighing device (11) is used for the weight for detecting the sample (26) in stove in real time
Amount, wherein, the surface of the sample (26) is optionally coated with all kinds of corrosivity salt deposits；
Air supply system (I), can optionally input all kinds of corrosive gas into the heating furnace (19)；
Electric-control system (III), including recording unit of weighing (33) and display unit (39), the recording unit of weighing (33) can
The real-time weight of the sample (26) is recorded in real time and calculates increasing of the sample (26) at each moment relative to initial time
Weight；The display unit (39) real-time display test period and can be existed based on the test period and the sample (26)
The high temperature corrosion kinetic curve that each moment obtains relative to the gain in weight of initial time；
Exhaust treatment system (IV), can be recycled the corrosive gas exported from heating furnace (19).
2. the experimental rig of simulation high temperature corrosion as claimed in claim 1, it is characterised in that
The boiler tube of the heating furnace (19) is the hollow structure of both ends open, and the weighing device (11) is arranged on boiler tube top
Top, is movably connected on weighing device (11) to sample (26) suspension type, the high temperature corrosion system (II) further includes
The elevating mechanism being connected with weighing device (11), the sample (26) put in or stretch out under the elevating movement driving of elevating mechanism
In the boiler tube of heating furnace (19).
3. the experimental rig of simulation high temperature corrosion as claimed in claim 2, it is characterised in that
The electric-control system (III) further includes the elevating mechanism control unit (32) being connected with the elevating mechanism, the elevator
Structure control unit (32) can control elevating mechanism elevating movement, and band according to the lifting speed and lifting distance parameter of input
Dynamic weighing device (11), which is realized, to be moved up and down.
4. the experimental rig of simulation high temperature corrosion as claimed in claim 2, it is characterised in that
The high temperature corrosion system (II) further includes the weighing device case (10) for being built-in with weighing device (11), the weighing device
Case (10) is the enclosed housing structure being made of head cover and base, and being offered on the base can form what is connected with boiler tube
Through hole (17), for being passed through for the suspender of suspension sample (26)；
The side wall of the weighing device case (10) is connected with elevating mechanism.
5. the experimental rig of simulation high temperature corrosion as claimed in claim 4, it is characterised in that
Cooling zone (16) is provided between the lower part of the weighing device case (10) and the top of boiler tube, for cooling down from described
The high temperature corrosion gas of heating furnace (19)；Formed and be tightly connected between the bottom of the cooling zone (16) and the top of boiler tube；
The cooling zone (16) is integrally formed on the base in the weighing device case (10), and the weighing device (11) is removable
It is arranged on unloading on the cooling zone (16)；
The cooling zone (16) is connected by pipeline with exhaust treatment system (IV).
6. the experimental rig of simulation high temperature corrosion as claimed in claim 1, it is characterised in that
The boiler tube bottom of the heating furnace (19) is connected with the second sealing flange (22), is opened up on second sealing flange (22)
There is the air inlet (23) being connected with air supply system (I)；
Positioned at the lower section of air inlet (23), sealing is embedded with lens (24), second sealing in second sealing flange (22)
The bottom terminal ends of flange (22) are equipped with monitor (25), and the electric-control system (III) further includes supervising data storage unit (35),
The supervising data storage unit (35) is connected with monitor (25), for storing monitored picture in stove；
The display unit (39) is connected with monitor (25) and supervising data storage unit (35), for being supervised in real-time display stove
Control picture.
7. the experimental rig of simulation high temperature corrosion as claimed in claim 6, it is characterised in that
The air supply system (I) includes being used for the multiple caissons for storing all kinds of corrosive gas, and each caisson is successively
It is connected by respective bye-pass and mixed pipe line with the air inlet (23) on second sealing flange (22), connection is each
Mass flowmenter (3) is each provided with the bye-pass of caisson, is connected and is provided with gas on the mixed pipe line of each bye-pass and mixes
Clutch；
The electric-control system (III) includes gas flow rate control unit (37), the gas flow rate control unit (37) and each quality
Flowmeter (3) connects, and according to each gas flow parameter of input mass flowmenter (3) can be controlled to be measured.
8. the experimental rig of simulation high temperature corrosion as claimed in claim 1, it is characterised in that
The center flat-temperature zone of the heating furnace (19) is provided with temperature-control heat couple (21), and the electric-control system (III) further includes and controls
The control temperature unit (34) of galvanic couple (21) connection is warmed, the control temperature unit (34) can join according to the predetermined test temperature of input
Number, control heating furnace (19) heating, while temperature-control heat couple (21) can be controlled to detect in-furnace temperature in real time and change and record stove
Interior temperature；
The display unit (39) can also be in the predetermined test temperature of real-time display and stove temperature.
9. the experimental rig of simulation high temperature corrosion as claimed in claim 8, it is characterised in that
It is provided with thermal insulation material, the temperature-control heat couple (21) is installed on the boiler tube tube wall periphery parcel of the heating furnace (19)
In the thermal insulation material；
Calandria is equipped with the thermal insulation material, the calandria is silicon-carbon calandria or molybdenum dioxide calandria.
10. the experimental rig of simulation high temperature corrosion as claimed in claim 5, it is characterised in that
The exhaust treatment system (IV) includes absorption tower, and the bottom on the absorption tower is connected with cooling zone (16), the suction
Multiple partition plates in formula arrangement of wriggling along longitudinal direction are provided with receipts tower, is equipped with the absorption tower and absorbs lye, inhaled for dissolving
Receive the tail gas from heating furnace (19).
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| CN113866080B (en) * | 2021-09-28 | 2023-12-05 | 太原理工大学 | Salt corrosion damage test device and method for simulating porous medium material |
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