CN107966398B - Test device for simulating high-temperature corrosion - Google Patents
Test device for simulating high-temperature corrosion Download PDFInfo
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Abstract
The invention relates to a test device for simulating high-temperature corrosion, which comprises a high-temperature corrosion system, a gas supply system, an electric control system and a tail gas treatment system, wherein the high-temperature corrosion system comprises a heating furnace and a weighing device, and the surface of a sample can be selectively coated with various corrosive salt layers; the gas supply system can selectively input various corrosive gases into the heating furnace, and the electric control system comprises a weighing recording unit and a display unit; the weighing recording unit can record the real-time weight of the sample and calculate the weight gain of the sample; the display unit can display the obtained high-temperature corrosion kinetic curve; the exhaust gas treatment system can recover and treat the corrosive gas output from the heating furnace. The testing device disclosed by the invention is high in intelligent automation degree, can display a corrosion dynamics curve result in a simulated corrosion test process in real time, and provides a good guarantee for conveniently and systematically researching the high-temperature corrosion behavior and corrosion mechanism of a metal material in an environment with coexistence of high-temperature gas, high-temperature salt and multiple corrosive media.
Description
Technical Field
The invention relates to the technical field of corrosion simulation, in particular to a test device for simulating high-temperature corrosion.
Background
With the progress of human civilization, the increasing population, and the increasing living, urbanization and industrial levels of human beings, various kinds of garbage such as domestic garbage, municipal garbage and industrial garbage are generated day by day, and the treatment problem of the garbage is more and more serious. The waste incineration treatment is an effective hand for realizing the harmlessness, reduction and reclamation of solid wasteThe method has good social benefit and economic benefit, and is more and more paid attention by people. However, HCl and Cl are generated when garbage is incinerated2、SO2Corrosive gases such as CO and the like and NaCl, KCl and Na2SO4、K2SO4When the metal deposits salt, the parts such as the superheater of the incineration equipment, the water wall and the like are seriously corroded at high temperature, so that the pipe wall is thinned, the pipe is exploded and the like, and the service life of the equipment is greatly reduced. Meanwhile, with the development of industries such as energy, power, petrochemical industry and the like and the continuous progress of modern science, the production process is developed towards high temperature and large scale, which makes the high temperature corrosion problem of equipment materials more prominent. In these industrial production or experimental research, high temperature oxidation, high temperature chlorination and other high temperature corrosive gas and/or high temperature corrosive salt research or use are often involved, and these substances can cause serious corrosion to industrial production equipment or experimental equipment, and further affect the service life of the equipment. Therefore, it is important to fully understand the high-temperature corrosion behavior and corrosion mechanism of metal materials in these corrosive media for the selection and protection of various equipments such as garbage incineration equipments, industrial production equipments or experimental equipments.
The method for researching the high-temperature corrosion behavior of the metal material in a specific environment by using a simulation device in a laboratory is an effective method for clarifying the high-temperature corrosion kinetics and disclosing the high-temperature corrosion mechanism of the metal material, and the simulation method is always concerned. The initial form of the method is a discontinuous weighing method: the method comprises the steps of putting a sample with certain mass and size into a heating device, keeping the sample in a specific temperature and corrosive environment for a period of time, cooling and taking out the sample, weighing the weight change of the sample before and after corrosion, and researching the high-temperature corrosion behavior of the material by using analysis means such as an X-ray diffractometer (XRD) and a Scanning Electron Microscope (SEM). Because the discontinuous weighing method requires a plurality of samples to obtain a group of dynamic data, which is time-consuming and labor-consuming, the continuous weighing method is gradually developed, namely, a continuous automatic recording balance is adopted to monitor the weight change of the samples in real time, and only one sample is needed to complete all corrosion dynamics researches. While the measurement method is developed, the atmosphere of the corrosive environment is also gradually developed from a single specific atmosphere to a plurality of complex atmospheres.
However, the existing continuous weighing simulator is only limited to the research on the high-temperature gas corrosion of materials, and no continuous measurement test device capable of simulating the coexistence of the high-temperature gas corrosion and the high-temperature salt corrosion is found at present. Meanwhile, the intelligent automation degree of the existing continuous weighing simulation test device is low, the corrosion dynamics curve result in the corrosion test simulation process cannot be displayed in real time, the high-temperature corrosion behavior of the metal material cannot be rapidly and intuitively known, the high-temperature corrosion behavior and the corrosion mechanism of the metal material in the environment with coexistence of high-temperature gas, high-temperature salt and various corrosive media cannot be systematically and conveniently researched, and references cannot be timely provided for material selection, corrosion protection and the like of equipment.
Disclosure of Invention
Technical problem to be solved
In order to solve the problems in the prior art, the invention provides a test device for simulating high-temperature corrosion, which has high intelligent automation degree, can display a corrosion dynamics curve result in the process of a corrosion simulation test in real time, can quickly and intuitively know the high-temperature corrosion behavior of a metal material, further provides guarantee for a system to conveniently research the high-temperature corrosion behavior and corrosion mechanism of the metal material in an environment with high-temperature gas, high-temperature salt and various corrosive media coexisting, and provides basis for material selection, corrosion protection and the like of equipment in time.
(II) technical scheme
In order to achieve the purpose, the invention adopts the main technical scheme that:
the invention provides a test device for simulating high-temperature corrosion, which comprises: the high-temperature corrosion system comprises a heating furnace and a weighing device, wherein the heating furnace is used for providing a high-temperature environment for a sample positioned in the furnace, and the weighing device is used for detecting the weight of the sample positioned in the furnace in real time, wherein the surface of the sample can be selectively coated with various corrosive salt layers; the gas supply system can selectively input various corrosive gases into the heating furnace; the electronic control system comprises a weighing recording unit and a display unit, wherein the weighing recording unit can record the real-time weight of the sample in real time and calculate the weight gain of the sample relative to the initial time at each moment; the display unit can display the test time and a high-temperature corrosion dynamic curve obtained based on the test time and the weight gain of the sample at each moment relative to the initial moment in real time; and an exhaust gas treatment system capable of recovering the corrosive gas discharged from the heating furnace.
According to the invention, the furnace tube of the heating furnace is of a hollow structure with two open ends, the weighing device is arranged above the top end of the furnace tube, the sample is movably connected to the weighing device in a suspension manner, the high-temperature corrosion system also comprises a lifting mechanism connected with the weighing device, and the sample extends into or out of the furnace tube of the heating furnace under the driving of the lifting motion of the lifting mechanism.
According to the invention, the electric control system also comprises a lifting mechanism control unit connected with the lifting mechanism, and the lifting mechanism control unit can control the lifting mechanism to move up and down according to the input lifting speed and lifting distance parameters and drive the weighing device to move up and down.
According to the invention, the high-temperature corrosion system also comprises a weighing device box internally provided with a weighing device, the weighing device box is of a closed box body structure consisting of a top cover and a base, and the base is provided with a through hole which can be communicated with the furnace tube and is used for a hanging piece for hanging a sample to pass through; the side wall of the weighing device box is connected with the lifting mechanism.
According to the invention, a cooling zone is arranged between the lower part of the weighing device box and the top end of the furnace tube and is used for cooling high-temperature corrosive gas from the heating furnace; the bottom of the cooling zone is in sealing connection with the top end of the furnace tube; the cooling area is integrally formed on a base in the weighing device box, and the weighing device is detachably arranged on the cooling area; the cooling zone is connected with a tail gas treatment system through a pipeline.
According to the invention, the bottom end of the furnace tube of the heating furnace is connected with a second sealing flange, and the second sealing flange is provided with an air inlet connected with an air supply system; a lens is hermetically embedded in the second sealing flange below the air inlet, a monitor is arranged at the bottom end of the second sealing flange, and the electric control system further comprises a monitoring data storage unit which is connected with the monitor and used for storing a monitoring picture in the furnace; the display unit is connected with the monitor and the monitoring data storage unit and is used for displaying the monitoring picture in the furnace in real time.
According to the invention, the gas supply system comprises a plurality of gas storage devices for storing various corrosive gases, each gas storage device is communicated with the gas inlet on the second sealing flange through respective branch pipelines and mixing pipelines in sequence, the branch pipelines connected with each gas storage device are respectively provided with a mass flow meter, and the mixing pipelines connected with each branch pipeline are provided with a gas mixer; the electric control system comprises a gas flow control unit, the gas flow control unit is connected with each mass flow meter, and the mass flow meters can be controlled to measure according to input gas flow parameters.
According to the invention, the central constant temperature area of the heating furnace is provided with the temperature control thermocouple, the electric control system also comprises a temperature control unit connected with the temperature control thermocouple, and the temperature control unit can control the heating furnace to be heated according to the input preset test temperature parameters, and can control the temperature control thermocouple to detect the temperature change in the furnace in real time and record the temperature in the furnace; the display unit can also display the preset test temperature and the temperature in the furnace in real time.
According to the invention, the periphery of the tube wall of the furnace tube of the heating furnace is wrapped with a heat-insulating material, and the temperature-control thermocouple is arranged in the heat-insulating material; the heat insulating material is internally provided with a heating body which is a silicon-carbon heating body or a molybdenum dioxide heating body.
According to the invention, the tail gas treatment system comprises an absorption tower, the bottom of the absorption tower is communicated with a cooling area, a plurality of partition boards which are arranged in a winding manner along the longitudinal direction are arranged in the absorption tower, and absorption alkali liquor is filled in the absorption tower and is used for dissolving and absorbing tail gas from a heating furnace.
(III) advantageous effects
The invention has the beneficial effects that:
the testing device can selectively input various corrosive gases into the heating furnace through the gas supply system, meanwhile, the surface of the sample can be selectively coated with various corrosive salt layers, and the heating furnace can provide a high-temperature environment for the sample in the heating furnace, so that the testing device can simulate the corrosion environment with coexistence of the high-temperature gases, the high-temperature salts and various corrosive media.
Meanwhile, a weighing device capable of detecting the weight of the sample in real time is arranged in the high-temperature corrosion system, a weighing recording unit is arranged in the electric control system, the real-time weight of the sample can be recorded, the weight gain of the sample relative to the initial moment at each moment can be calculated, and meanwhile, the display unit can display the test time and a high-temperature corrosion dynamics curve obtained based on the test time and the weight gain in real time. Therefore, the intelligent automation degree of the testing device is high, the corrosion dynamics curve result in the process of simulating the high-temperature corrosion test can be displayed in real time, the high-temperature corrosion behavior of the metal material can be rapidly and intuitively known, the guarantee is further provided for a system to conveniently research the high-temperature corrosion behavior and corrosion mechanism of the metal material in the environment with coexistence of high-temperature gas, high-temperature salt and various corrosive media, and the basis is provided for material selection, corrosion protection and the like of equipment in time.
Drawings
FIG. 1 is a schematic structural view of a test apparatus for simulating high-temperature corrosion provided in the following examples;
FIG. 2 is a schematic structural diagram of a high-temperature corrosion system of the test device for simulating high-temperature corrosion shown in FIG. 1;
FIG. 3 is a schematic structural diagram of a gas supply system of the test device for simulating high-temperature corrosion shown in FIG. 1;
FIG. 4 is a schematic diagram of an electrical control system of the test device for simulating high-temperature corrosion shown in FIG. 1;
FIG. 5 is a schematic structural diagram of an exhaust gas treatment system of the test device for simulating high-temperature corrosion shown in FIG. 1;
FIG. 6 is a graph of the high temperature corrosion kinetics for the presence of various deposition salts as obtained in example 1 below;
FIG. 7 is a graph of the high temperature corrosion kinetics for the coexistence of multiple gases as obtained in example 2 below;
FIG. 8 is a graph of the high temperature corrosion kinetics of a plurality of deposited salts and a plurality of gases in the presence of one another, as obtained in example 3 below.
[ description of reference ]
I: an air supply system; II: a high temperature corrosion system; III: an electronic control system; IV: a tail gas treatment system; 1: a gas cylinder; 2: a pressure reducing valve; 3: a mass flow meter; 4: a cyclone gas mixer; 5: a vacuum pump; 6: an air supply valve; 7: a vacuum pump valve; 8: a vacuum gauge valve; 9: a vacuum gauge; 10: a weighing device box; 11: a weighing device; 12: a separable terminal; 13: a lift drive; 14: a column rail; 15: an exhaust hole; 16: a cooling zone; a: a refrigerant inlet; b: a refrigerant outlet; 17: a through hole; 18: hanging wires; 19: heating furnace; 20: a first sealing flange; 21: a temperature control thermocouple; 22: a second sealing flange; 23: an air inlet; 24: a lens; 25: a monitor; 26: a sample; 27: an auxiliary column; 28: a first auxiliary support plate; 29: a second auxiliary support plate; 30: a third auxiliary support plate; 31: a fourth auxiliary support plate; 32: a lifting mechanism control unit; 33: a weighing recording unit; 34: a temperature control unit; 35: a monitoring data storage unit; 36: a vacuum pumping system control unit; 37: a gas flow rate control unit; 38: a gas supply system control unit; 39: a display unit; 40: an absorber valve.
Detailed Description
For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.
Referring to fig. 1, the present embodiment provides a test apparatus for simulating high temperature corrosion, which includes an air supply system I, a high temperature corrosion system ii, an electric control system iii, and an exhaust gas treatment system iv.
Wherein, high temperature corrosion system II includes heating furnace 19 and weighing device 11, and heating furnace 19 is used for providing the high temperature environment for being located the sample 26 in the stove, and weighing device 11 is used for the weight of the sample 26 that is located in the stove of real-time detection, and wherein, the surface of sample 26 optional coating all kinds of corrosive salt layer.
The gas supply system I can selectively supply various types of corrosive gases into the heating furnace 19.
And the electronic control system III comprises a weighing recording unit 33 and a display unit 39, wherein the weighing recording unit 33 can record the test time, the initial weight of the sample 26 in the furnace and the real-time weight of the sample 26 in the test process and calculate the difference value between the real-time weight and the initial weight of the sample 26, namely the weight gain of each moment relative to the initial moment. It should be noted that the time interval counted by the weight recording unit 33 may be preset.
The display unit 39 is capable of displaying the test time, the inputted set time interval, the initial weight of the sample 26 in the furnace, the real-time weight of the sample 26, the weight gain of the sample 26 at each time with respect to the initial time, and the high-temperature corrosion kinetic curve obtained based on the test time and the weight gain of the sample 26 at each time with respect to the initial time. Here, the abscissa of the high-temperature corrosion kinetics curve represents the test time, and the ordinate represents the weight increase of the unit area sample 26 at each time point with respect to the initial time point.
The off-gas treatment system iv can recover and treat the high-temperature corrosive gas from the heating furnace 19. Because various harmful gases are output from the heating furnace 19, the tail gas treatment system IV is arranged to mainly absorb and filter the harmful gases, and the environment-friendly effect is achieved.
In summary, the testing apparatus of the present embodiment can selectively input various corrosive gases into the heating furnace 19 through the gas supply system I, and at the same time, the surface of the sample 26 can be selectively coated with various corrosive salt layers, and the heating furnace 19 can provide a high temperature environment for the sample 26 located in the furnace, so that after the surface of the sample 26 is coated with various corrosive salt layers, the corrosion environment of the high temperature salt can be separately simulated under the high temperature heating of the heating furnace 19; if corrosive gas is introduced into the heating furnace 19 at the same time, the corrosive gas is changed into high-temperature gas under the high-temperature heating of the heating furnace 19, and further, the corrosion environment with high-temperature salt and high-temperature gas coexisting can be simulated; if the surface of the sample 26 is not coated with various corrosive salt layers and only the corrosive gas is introduced into the heating furnace 19, the corrosive environment of the high-temperature gas can be simulated alone. Thus, the test apparatus of the present embodiment can simulate a high-temperature corrosive environment in which high-temperature gas, high-temperature salt, and various corrosive media coexist.
Meanwhile, as the weight weighing device 11 capable of detecting the sample 26 in real time is arranged in the high-temperature corrosion system II, and the weighing recording unit 33 is arranged in the electric control system III, the test time and the initial weight of the sample 26 in the furnace can be recorded, the weight gain of the sample 26 relative to the initial time at each moment can be calculated, and the display unit 39 can display the test time, the initial weight of the sample 26 in the furnace, the real-time weight of the sample 26 in the furnace and a high-temperature corrosion dynamic curve obtained based on the test time and the weight gain of the sample 26 relative to the initial time at each moment in real time.
Therefore, the intelligent automation degree of the testing device in the embodiment is high, the corrosion dynamics curve result in the corrosion test simulation process can be displayed in real time, the high-temperature corrosion behavior of the metal material can be rapidly and intuitively known, the guarantee is further provided for a system to conveniently research the high-temperature corrosion behavior and the corrosion mechanism of the metal material in the environment with coexistence of high-temperature gas, high-temperature salt and multiple corrosive media, and the basis is timely provided for material selection, corrosion protection and the like of equipment.
Further, referring to fig. 2, the furnace tube of the heating furnace 19 is a hollow structure with openings at two ends, the weighing device 11 is disposed above the top end of the furnace tube, the high-temperature corrosion system ii further includes a lifting mechanism connected with the weighing device 11, the sample 26 is movably connected to the weighing device 11 in a suspension manner, and the sample 26 can extend into or out of the furnace tube of the heating furnace 19 under the driving of the lifting movement of the lifting mechanism. When the simulated high-temperature corrosion test is started, the sample 26 extends into the furnace tube of the heating furnace 19, and when the simulated high-temperature corrosion test is completed, the sample 26 extends out of the furnace tube of the heating furnace 19. Preferably, the sample 26 is connected with the weighing device 11 through the hanging wire 18, so that the sample 26 can be conveniently taken and placed. It is further preferred that a detachable connection device, such as a hook, is used in the middle of the hanging wire 18 to facilitate the taking and placing of the sample 26. When the surface of the sample 26 needs to be coated with various corrosive salt layers, after the test 26 is coated with the salt layer, the sample 26 is put into the crucible and then connected with the bottom end of the hanging wire 18, so as to prevent the salt layer from falling off and affecting the actual weight of the sample 26. The sample 26 can be directly placed in the crucible, and then the crucible is directly connected with the bottom end of the hanging wire 18, so that the crucible plays a role in containing the sample 26, and can also contain the fallen salt and the corrosion layer. Of course, the sample 26 may be suspended in a crucible, and the sample 26 and crucible are connected to the bottom end of the hanger wire 18 at the same time, in which case the crucible acts to contain the shed salt and corrosion layer.
Further, the electronic control system iii further includes a lifting mechanism control unit 32 connected to the lifting mechanism, and the lifting mechanism control unit 32 can control the lifting mechanism to move up and down according to the input lifting speed and lifting distance parameters, and drive the weighing device 11 to move up and down. Because the sample 26 is suspended movably connected to the weighing device 11, the lifting mechanism can drive the weighing device 11 to move up and down, and then can drive the sample 26 to move up and down. Therefore, the test device in the embodiment is provided with the lifting mechanism and the lifting mechanism control unit 32, and can input the lifting speed and the lifting distance parameter at the same time, so that the lifting of the weighing device 11 is controlled more accurately and stably, the sample 26 is more conveniently taken and placed, the operation is simple, and the automation degree is high.
Further, the high-temperature corrosion system II further comprises a weighing device box 10, the weighing device box 10 is a closed box structure consisting of a top cover and a base, and a through hole capable of being communicated with the furnace tube is formed in the base and used for enabling a hanging piece for hanging the sample 26 to penetrate through. The weighing device 11 is preferably a precision electronic balance, which can increase the accuracy of weighing the sample 26 by the weighing device 11, and thus the experimental result is more accurate. The weighing device 11 is detachably arranged in the weighing device box 10, so that the weighing device 11 is convenient to detach. The top cover and the base of the weighing device box 10 are preferably detachably connected, so that the weighing device 11 is more convenient to take and place. The base is a semi-enclosed box structure with an opening at the upper end in fig. 1 and 2, but may be other structures capable of supporting the weighing device 11 and forming an enclosed box with the top cover.
The side wall of the weighing device box 10 is connected with the lifting mechanism, a separating type binding post 12 is further arranged on the side wall of the weighing device box 10, one end of the separating type binding post 12 is connected with a data line of the weighing device 11, and the other end of the separating type binding post is connected with a weighing recording unit 33 through the data line. It should be noted that, the separable terminal 12 is detachably connected to the weighing device 11 and the weighing recording unit 33, so that when the weighing device 11 needs to be taken out, the data line can be disconnected from the separable terminal 12 first and then the weighing device 11 can be taken out, and the operation is simple and convenient.
Further, a cooling zone 16 is provided between the lower portion of the weighing device box 10 and the top end of the furnace tube for cooling the high temperature corrosive tail gas from the heating furnace 19. The cooling zone 16 has a housing and the interior of the cooling zone 16 forms a cavity that communicates with the weighing device tank 10 and the furnace tube. Specifically, a top plate and a bottom plate of a shell of the cooling area 16 are respectively provided with a through hole 17 communicated with the cavity, suspension pieces (such as suspension wires 18) for suspending a sample 26 penetrate through the whole cooling area 16 through the two through holes 17, the bottom plate of the cooling area 16 is in sealed connection with the top end of the furnace tube, and the side wall of the shell of the cooling area 16 is provided with an exhaust hole 15 connected with the tail gas treatment system IV. Therefore, the whole box body can be better prevented from being overheated due to the arrangement of the cooling area 16, and further the weighing device 11 is prevented from being damaged due to overheating.
Specifically, cooling area 16 is established in weighing device case 10, forms a body structure with the base in weighing device case 10, and weighing device 11 detachably sets up on the roof of cooling area 16, like this when elevating system reciprocates, drives weighing device 11 and the cooling area 16 in weighing device case 10 and realizes reciprocating together.
Further preferably, the housing of the cooling area 16 is a hollow structure for flowing a refrigerant medium, the housing has a refrigerant inlet and a refrigerant outlet, which are respectively shown by reference numeral A, B in fig. 2, and the refrigerant medium is preferably cooling water, which can save cost.
Further, the elevating mechanism includes a plurality of rails and a plurality of elevating drivers 13, and each of the elevating drivers 13 is engaged with one of the rails and linearly movable along the rail. The top ends of the plurality of tracks are connected with the first auxiliary supporting plate 28, the plurality of lifting drivers 13 are connected with the outer side wall of the weighing device box 10, the plurality of lifting drivers 13 are connected with the lifting mechanism control unit 32, the lifting mechanism control unit 32 can control the lifting drivers 13 to do linear motion along the tracks, and the weighing device 11 is driven to move up and down. Preferably, the rail is a post rail 14.
Further preferably, the lifting mechanism comprises four lifting drivers 13 and four column rails 14, and the four lifting drivers 13 and the four column rails 14 are symmetrically distributed on two sides of the weighing device box 10, and two lifting drivers 13 and two column rails 14 are arranged on each side of the weighing device box, so that stable lifting of the weighing device box 10 can be better ensured, the upper and lower positions of the weighing device box 10 can be freely and stably adjusted, and the sample 26 and the weighing device 11 can be conveniently taken and placed.
Further, the bottom end of the furnace tube of the heating furnace 19 is connected with a second sealing flange 22, the side surface of the second sealing flange 22 is provided with an air inlet 23 connected with the air supply system I, a lens 24 is arranged in the second sealing flange 22 below the air inlet 23 in a sealing and embedding manner, and the bottom end of the second sealing flange 22 is provided with a monitor 25 for monitoring the condition in the furnace in real time. Preferably, the monitor 25 is a high-definition digital monitor, which can make the definition higher and facilitate observation. It should be noted that, on one hand, the lens 24 can further enlarge the picture in the furnace to make the monitoring picture clearer, and on the other hand, the lens 24 can also prevent the corrosive gas from flowing onto the monitor 25 or into the air, so as to cause certain corrosion to the monitor 25 or cause pollution to the air.
The electric control system III further comprises a monitoring data storage unit 35, the monitoring data storage unit 35 is connected with the monitor 25 and used for storing the monitoring pictures in the furnace, and the display unit 39 is connected with the monitor 25 and the monitoring data storage unit 35 and used for displaying the monitoring pictures in the furnace in real time and being capable of retrieving the stored monitoring pictures at any time. Therefore, the test device in this embodiment is provided with the monitor 25, the monitoring data storage unit 35, and the display unit 39, so that the monitoring picture in the furnace can be displayed and stored in real time, and the state of the sample 26 can be observed more conveniently.
The top end of the furnace tube of the heating furnace 19 is hermetically connected with the bottom plate of the cooling area 16 through a first sealing flange 20, and it should be noted that when the lifting mechanism is used to drive the weighing device box 10 to move up and down, the first sealing flange 20 needs to be detached first and then lifted up and down.
Further, the central constant temperature zone of heating furnace 19 is provided with accuse temperature thermocouple 21, electrical system III still includes accuse temperature unit 34 and is connected with accuse temperature thermocouple 21, accuse temperature unit 34 can be according to the predetermined test temperature of input, control heating furnace 19 intensifies, can control the temperature change in accuse temperature thermocouple 21 real-time detection stove simultaneously and record the temperature in heating furnace 19, display element 39 can also show the temperature in predetermined test temperature and heating furnace 19 in real time, so that in time know the temperature change condition in the stove and in time make corresponding adjustment (if can realize the cascaded intensification of heating furnace 19), degree of automation is high, directly perceived and the practicality is strong.
Furthermore, the periphery of the tube wall of the furnace tube is wrapped with a heat insulation material, and a distance of at least 2mm is arranged between the inner wall of the heat insulation material and the outer wall of the furnace tube, so that the furnace tube can be taken out conveniently. The temperature control thermocouple 21 is arranged in the heat insulation material, and a heating body is arranged in the heat insulation material and used for heating the interior of the furnace tube to a preset test temperature. It should be noted here that the heating body is provided in the insulating material in a manner known to those skilled in the art, for example, by making a hole in the insulating material and inserting the heating body therein. The heating body can heat the interior of the furnace tube after being electrified, and the heat insulation material is arranged to play a good heat insulation effect on the furnace tube, so that the heat loss is prevented from influencing the final test result.
Further preferably, the furnace tube is a corundum furnace tube, the heating bodies are four U-shaped silicon carbide rod heating bodies, and the temperature control thermocouple 21 is a double platinum rhodium thermocouple. The corundum furnace tube has excellent heat conductivity, and can quickly transfer heat generated by the heating body into the furnace tube. The adoption of the U-shaped heating body can prolong the length of the heating body in the same space range, so that the heating speed is higher, and a wider and more stable constant temperature area is formed. Wherein, the maximum heating temperature of the U-shaped silicon carbide rod heating body can reach 1300 ℃. The maximum heating temperature of the heating body in this embodiment is higher than that in the prior art, that is, the requirement of a wider analog temperature range can be satisfied (the wider means that the heating temperature can be higher, and thus the analog temperature range is widened).
Of course, the present embodiment is not limited to this, and the heating member may also be a molybdenum disilicide heating member, and the maximum heating temperature of the heating member can reach about 1600 ℃. It should be noted here that the selection of the temperature-controlling thermocouple 21 and the heat-insulating material is selected according to the material of the heating body, because the highest heating temperatures that can be achieved by different heating bodies are different, i.e. the heating capacities are different, the requirements for the temperature-controlling thermocouple 21 and the heat-insulating material are different. Therefore, the heating body of the test device in the embodiment can select a silicon-carbon heating body or a molybdenum disilicide heating body, and reasonably selects the temperature control thermocouple 21 and the heat insulation material according to the used heating body, so that the requirement of wider simulation temperature range can be met, and the requirement of wider constant temperature area can be met.
Further, the heating furnace 19 is provided between the second subsidiary support plate 29 and the third subsidiary support plate 30, and the second subsidiary support plate 29 is also connected to the bottom ends of the plurality of rails. Two ends of the furnace tube respectively penetrate through the second auxiliary supporting plate 29 and the third auxiliary supporting plate 30, and finally, the two ends are respectively connected with the first sealing flange 20 and the second sealing flange 22. It is understood that through holes are respectively formed in the second auxiliary support plate 29 and the third auxiliary support plate 30 to facilitate the furnace tube to pass through. A fourth auxiliary support plate 31 is further provided below the second sealing flange 22 and is connected to the second auxiliary support plate 29 and the third auxiliary support plate 30 by a plurality of auxiliary columns 27. Preferably, four auxiliary columns 27 are adopted to play a role in stably supporting the whole high-temperature corrosion system II.
Further, referring to fig. 3, the gas supply system I includes a corrosive gas supply system capable of selectively inputting various types of corrosive gases into the heating furnace 19, and a protective gas supply system capable of selectively inputting protective gases into the heating furnace 19. The electric control system iii further includes a gas supply system control unit 38 capable of controlling the opening and closing of the corrosive gas supply system and the protective gas supply system. When the simulated high-temperature corrosion test is completed, the corrosive gas supply system is closed, the corrosive gas is stopped from being input into the heating furnace 19, the protective gas supply system is opened, and the protective gas is input into the heating furnace 19, so that the corrosive gas is exhausted. It should be noted that the protective gas mentioned here may be an inert gas such as nitrogen or argon, and is not limited herein.
Further, the gas supply system I comprises a plurality of gas storage devices for storing various corrosive gases or protective gases, each gas storage device is communicated with the gas inlet 23 on the second sealing flange 22 sequentially through a branch pipeline and a mixing pipeline, the branch pipeline connected with each gas storage device is respectively provided with a pressure reducing valve 2 and a mass flow meter 3, and the mixing pipeline connected with each branch pipeline is provided with a gas mixer, so that the gases can be uniformly mixed. The electronic control system iii includes a gas flow rate control unit 37, and the gas flow rate control unit 37 is connected to each mass flow meter 3, and can control the mass flow meter 3 to perform metering according to each input gas flow rate parameter. Preferably, the gas storage device is a gas cylinder 1, although other storage devices are also possible. N required by experiments are respectively arranged in the gas storage cylinder 12、SO2、O2Or HCI, etc., and the number of the gas cylinders 1 and the gas to be stored are not limited, and are determined according to actual needs. The gas mixer is preferably a cyclone gas mixer 4, so that the gas can be mixed more uniformly, and the corrosion environment of various mixed gases during the incineration of the garbage can be simulated more truly.
Therefore, the test device in the embodiment is provided with the cyclone gas mixer 4, so that the gas can be fully mixed and then introduced into the high-temperature corrosion system II to be uniformly mixed; meanwhile, in the embodiment, the mass flow meter 3 is arranged on each gas storage device, and the gas flow control unit 37 can control the mass flow meter 3 to measure according to each input gas flow parameter, so that the flow and the proportion of each gas can be independently and accurately controlled, a better mixing effect can be achieved, the operation is simple, and the automation degree is high.
Furthermore, a vacuumizing system and an air supply valve 6 are connected between the gas mixer and the high-temperature corrosion system II on the mixing pipeline, the air supply valve 6 is used for controlling the opening and closing of the air supply system I, and the vacuumizing system can selectively vacuumize the high-temperature corrosion system II. Meanwhile, the electric control system III further comprises a vacuumizing system control unit 36 which can control the opening and closing of the vacuumizing system, preferably, the vacuumizing system comprises a vacuum pump 5 and a vacuum pump valve 7, a vacuum gauge 9 and a vacuum gauge valve 8 are further arranged between the vacuum pump 5 and the high-temperature corrosion system II, and the vacuum gauge 9 is arranged to display the vacuum degree in the high-temperature corrosion system II so that the vacuum degree condition in the high-temperature corrosion system II can be known more intuitively.
Therefore, the test device in this embodiment can carry out evacuation treatment to high temperature corrosion system II from this because of being equipped with the evacuation system that can be to II vacuums of high temperature corrosion system, prevents that the interior purity that influences high temperature corrosion system II because of having other impurity gas such as air in the high temperature corrosion system II, and then influences the accuracy of test result.
Further, referring to fig. 5, the tail gas treatment system iv includes an absorption tower, the bottom of the absorption tower has a tail gas inlet and an absorption tower valve 40, the top of the absorption tower has a tail gas outlet, the tail gas inlet is communicated with the exhaust hole 15 of the cooling zone 16, a plurality of partition boards arranged in a winding manner along the longitudinal direction are arranged in the absorption tower, and absorption alkali liquor is filled in the absorption tower for dissolving and absorbing the tail gas from the heating furnace 19.
It should be noted that, the exhaust gas inlet and the exhaust hole 15 of the cooling area 16 should be connected by a pipe having a certain pressure resistance and corrosion resistance, and capable of bending and moving, such as a corrugated pipe, so as to more conveniently drive the pipe to move when the weighing device 11 is lifted. Therefore, the test device in this embodiment is provided with a plurality of partition plates arranged in a serpentine manner along the longitudinal direction in the absorption tower of the tail gas treatment system iv, so that the tail gas can be fully absorbed, and the test device is more favorable for environmental protection.
Further, referring to fig. 4, the main body of the electronic control system iii is an electronic control cabinet, the display unit 39 is disposed on the outer side wall of the electronic control cabinet for visual observation, and all the controls (including the lifting mechanism control unit 32, the weighing recording unit 33, the temperature control unit 34, the monitoring data storage unit 35, the vacuum pumping system control unit 36, the gas flow control unit 37, the gas supply system control unit 38, and the display unit 39) in the electronic control system iii are controlled by dedicated control software, which enables each unit to realize the above-mentioned control functions. It should be noted that, the input of some parameters (including parameters such as the lifting speed, the lifting distance, the temperature in the furnace, the flow rate of each gas, the test time, the set time interval, etc.) may be directly input through a keyboard, or may be input through a touch screen key on the display unit 39, which is not limited herein.
Therefore, the testing device in this embodiment is provided with special control software to control the operations of the lifting mechanism control unit 32, the weighing recording unit 33, the temperature control unit 34, the monitoring data storage unit 35, the vacuum-pumping system control unit 36, the gas flow control unit 37, the gas supply system control unit 38 and the display unit 39, the test apparatus in this embodiment can display and record the test time, the inputted set time interval, the initial weight of the sample 26 in the furnace, the real-time weight of the sample 26, and the weight increase of the sample 26 at each time with respect to the initial time in real time, and the obtained high-temperature corrosion dynamics curve, can display the preset test temperature program and the temperature in the heating furnace 19 in real time, meanwhile, the monitoring picture in the furnace can be displayed in real time and the stored monitoring picture can be retrieved at any time, so that the automation degree is high, and the integration degree is high. Meanwhile, all recorded data are stored in the electronic control system III in a file form and can be copied by a U disk or an optical disk at any time, so that the subsequent processing of experimental data is facilitated.
Further, the weighing device box 10 and each flange are made of high-corrosion-resistant stainless steel, and each connecting pipeline is made of high-corrosion-resistant materials, so that corrosion caused by corrosive media is prevented.
Furthermore, each interface of the whole test device is strictly sealed by measures such as sealant, sealing filler, rubber pads and the like, so that the harmful gas and reaction volatile matters are prevented from being leaked in the whole test process.
The method for using the test apparatus and the working process of the test apparatus in this embodiment will be described in detail below by taking as an example the simulation of the high-temperature corrosion of the sample 26 by different corrosive media in the environment of refuse incineration, but it will be understood by those skilled in the art that the test apparatus in this embodiment is not limited to the environment of refuse incineration simulation.
Example 1:
the embodiment mainly simulates a high-temperature corrosion experiment with coexistence of various deposited salts in a waste incineration environment, and specifically comprises the following steps:
the method comprises the following steps: and (3) turning on a cooling water switch and an electric control cabinet power supply, setting a temperature-raising program in special control software, and raising the temperature in the heating furnace 19 to 800 ℃.
Step two: the weighing device box 10 is raised by inputting the rising speed and the rising distance to be 1m/min and 0.5m respectively in the special control software. The surface of the super austenitic stainless steel 254SMO sample 26 is evenly coated with salt (40% NaCl + 40% KCl + 10% Na)2SO4+10％K2SO4) Then the mixture is put into a corundum crucible and hung at the bottom end of a hanging wire 18 connected with a weighing device 11. The input descending speed and the descending distance are respectively 1m/min and 0.5m in the special control software, the weighing device box 10 is descended, and the first sealing flange 20 for connecting the weighing device box 10 and the furnace tube is locked and sealed. Step three: the air supply valve 6, the vacuum pump 5 valve and the vacuum meter valve 8 are closed, the absorption tower valve 40 is opened, the monitor 25 is started, and the 'ON' icon is clicked to start the experiment. After 120 hours of the experiment, the cylinder valve of the gas cylinder 1 and the gas supply valve 6 were opened, the flow rate of argon was set to 500mL/min in the dedicated control software, and the heating furnace 19 was vented for 5min until the corrosive gas was exhausted. The cylinder valve of the gas cylinder 1 is closed, the OFF icon is clicked, and the temperature control program and the monitor 25 are closed. The lifting speed and the lifting distance are respectively 1m/min and 0.5m, which are input in the special control software, the weighing device box 10 is lifted, and the sample 26 is taken out.
It should be noted here that the gas supply valve 6, the vacuum pump 5 valve and the vacuum gauge valve 8 are closed and the absorber valve 40 is opened first, so that the gas products generated during the experiment are discharged to the off-gas treatment system iv.
Step four: after the sample 26 is taken out, all valves (including the air supply valve 6, the vacuum pump 5 valve, the vacuum meter valve 8 and the absorption tower valve 40) are closed, the power supply of the electric control cabinet is closed, and the cooling water switch is closed after the system is cooled to the room temperature.
The high temperature corrosion kinetics curves obtained when various deposited salts coexist are shown in fig. 6.
Example 2:
the embodiment mainly simulates the high-temperature corrosion experiment of coexistence of various gases in the waste incineration environment, and specifically comprises the following steps:
the method comprises the following steps: and (3) turning on a cooling water switch and an electric control cabinet power supply, setting a temperature-raising program in special control software, and raising the temperature in the heating furnace 19 to 800 ℃.
Step two: the weighing device box 10 is raised by inputting the rising speed and the rising distance to be 1m/min and 0.5m respectively in the special control software. The super austenitic stainless steel 254SMO sample 26 is hung on the bottom end of the hanger wire 18 connected to the weighing device 11. The input descending speed and the descending distance are respectively 1m/min and 0.5m in the special control software, the weighing device box 10 is descended, and the first sealing flange 20 for connecting the weighing device box 10 and the furnace tube is locked and sealed.
Step three: closing the gas supply valve 6 and the absorption tower valve 40, opening the vacuum pump 5 valve and the vacuum meter valve 8, opening the vacuum pump 5 to vacuumize the system, when the number of readings of the vacuum meter reaches within 100Pa, closing the vacuum pump 5 valve, opening the gas supply valve 6, and setting various gas flows in special control software: n is a radical of2284.7mL/min，SO20.06mL/min，O215mL/min and HCl 0.24mL/min, starting the cyclone gas mixer 4, opening the cylinder valve of the gas storage cylinder 1, introducing gas into the heating furnace 19, closing the vacuum meter valve 8 after the indication of the vacuum meter reaches one atmosphere, opening the absorption tower valve 40, starting the monitor 25, clicking the 'ON' icon, and starting the experiment. After 120 hours of the experiment, the SO was turned off2、O2And a cylinder valve of HCl gas, holding N2The cylinder valve of (2) is opened, N is set in a special control software2The flow rate was set at 500mL/min, and the heating furnace 19 was vented for 10min until the corrosive gas was exhausted.
The cylinder valve of the cylinder 1 and the cyclone gas mixer 4 are closed, the "OFF" icon is clicked, and the temperature control program and monitor 25 are closed. The lifting speed and the lifting distance are respectively 1m/min and 0.5m, which are input in the special control software, the weighing device box 10 is lifted, and the sample 26 is taken out.
It should be noted that, in this step, the valve 40 of the absorption tower is first closed, so as to prevent the absorption liquid in the tail gas treatment system iv from flowing back into the high temperature corrosion system ii during the vacuum pumping.
Step four: after the sample 26 is taken out, all valves (including the air supply valve 6, the vacuum pump 5 valve, the vacuum meter valve 8 and the absorption tower valve 40) are closed, the power supply of the electric control cabinet is closed, and the cooling water switch is closed after the system is cooled to the room temperature.
The high-temperature corrosion kinetics curve of the finally obtained multi-gas coexistence is shown in figure 7.
Example 3
The embodiment mainly simulates a high-temperature corrosion experiment of coexistence of various gases and deposited salt in a waste incineration environment, and specifically comprises the following steps:
the method comprises the following steps: and (3) turning on a cooling water switch and an electric control cabinet power supply, setting a temperature-raising program in special control software, and raising the temperature in the heating furnace 19 to 800 ℃.
Step two: the weighing device box 10 is raised by inputting the rising speed and the rising distance to be 1m/min and 0.5m respectively in the special control software. The surface of the super austenitic stainless steel 254SMO sample 26 is evenly coated with salt (40% NaCl + 40% KCl + 10% Na)2SO4+10％K2SO4) Then the mixture is put into a corundum crucible and hung at the bottom end of a hanging wire 18 connected with a weighing device 11. The input descending speed and the descending distance are respectively 1m/min and 0.5m in the special control software, the weighing device box 10 is descended, and the first sealing flange 20 for connecting the weighing device box 10 and the furnace tube is locked and sealed.
Step three: closing the valve air supply valve 6 and the absorption tower valve 40, opening the vacuum pump 5 valve and the vacuum meter valve 8, opening the vacuum pump 5 to vacuumize the system, closing the vacuum pump 5 when the indication number of the vacuum meter reaches within 100Pa, closing the vacuum pump 5 valve, opening the air supply valveThe valve 6, various gas flow rates are set in the special control software: n is a radical of2189.8mL/min，SO20.04mL/min，O210mL/min and HCl 0.16mL/min, starting the cyclone gas mixer 4, opening the cylinder valve of the gas storage cylinder 1, introducing gas into the heating furnace 19, closing the vacuum meter valve 8 after the indication of the vacuum meter reaches one atmosphere, opening the absorption tower valve 40, starting the monitor 25, clicking the 'ON' icon, and starting the experiment. After 120 hours of the experiment, the SO was turned off2、O2And a cylinder valve of HCl gas, holding N2The cylinder valve of (2) is opened, N is set in a special control software2The flow rate was set at 500mL/min, and the heating furnace 19 was vented for 10min until the corrosive gas was exhausted.
The cylinder valve of the cylinder 1 and the cyclone gas mixer 4 are closed, the "OFF" icon is clicked, and the temperature control program and monitor 25 are closed. The lifting speed and the lifting distance are respectively 1m/min and 0.5m, which are input in the special control software, the weighing device box 10 is lifted, and the sample 26 is taken out.
Step four: after the sample 26 is taken out, all valves (including the air supply valve 6, the vacuum pump 5 valve, the vacuum meter valve 8 and the absorption tower valve 40) are closed, the power supply of the electric control cabinet is closed, and the cooling water switch is closed after the system is cooled to the room temperature.
The high-temperature corrosion kinetics curves of the finally obtained various deposited salts and various gases in the presence of one another are shown in FIG. 8.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not intended to limit the present invention in any way, so that any person skilled in the art can make modifications or changes in the technical content disclosed above. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (10)
1. A test device for simulating high-temperature corrosion is characterized by comprising:
the high-temperature corrosion system (II) comprises a heating furnace (19) and a weighing device (11), wherein the heating furnace (19) is used for providing a high-temperature environment for a sample (26) positioned in the furnace, and the weighing device (11) is used for detecting the weight of the sample (26) positioned in the furnace in real time, wherein the surface of the sample (26) can be selectively coated with various corrosive salt layers;
the sample (26) is movably connected to the weighing device (11) in a suspension manner; the high-temperature corrosion system (II) also comprises a lifting mechanism connected with the weighing device (11), and the sample (26) extends into or out of a furnace tube of the heating furnace (19) under the driving of the lifting motion of the lifting mechanism; the lifting mechanism comprises a plurality of tracks and a plurality of lifting drivers, each lifting driver can be matched with one track and can linearly move along the track, the top ends of the plurality of tracks are connected with the first auxiliary supporting plate, and the plurality of lifting drivers are connected with the outer side wall of the weighing device box; the plurality of lifting drivers and the plurality of tracks are symmetrically distributed on two sides of the weighing device box;
the high-temperature corrosion system (II) further comprises a weighing device box (10) internally provided with a weighing device (11), the weighing device (11) is detachably arranged in the weighing device box (10), and the side wall of the weighing device box (10) is connected with a lifting mechanism;
the gas supply system (I) can selectively input various corrosive gases into the heating furnace (19);
an electronic control system (III) comprising a weight recording unit (33) and a display unit (39), wherein the weight recording unit (33) can record the real-time weight of the test sample (26) in real time and calculate the weight gain of the test sample (26) relative to the initial time at each moment; the display unit (39) is capable of displaying in real time a test time and a high temperature corrosion kinetics curve obtained on the basis of the test time and the weight gain of the test piece (26) at each moment with respect to an initial moment; the electric control system (III) also comprises a lifting mechanism control unit (32) connected with the lifting mechanism, and the lifting mechanism control unit can control the lifting mechanism to move up and down and can drive the weighing device (11) to move up and down;
a cooling area (16) is arranged between the lower part of the weighing device box (10) and the top end of the furnace tube and is used for cooling high-temperature corrosive gas from the heating furnace (19); the bottom of the cooling zone (16) is in sealed connection with the top end of the furnace tube; the cooling zone (16) is integrated on a base inside the weighing device box (10), and the weighing device (11) is detachably arranged on the cooling zone (16);
an exhaust gas treatment system (IV) capable of recovering the corrosive gas output from the heating furnace (19); the tail gas treatment system (IV) comprises an absorption tower, and the bottom of the absorption tower is communicated with a cooling area (16);
the bottom end of a furnace tube of the heating furnace (19) is connected with a second sealing flange (22), and the bottom end part of the second sealing flange (22) is provided with a monitor (25).
2. The test apparatus for simulating high temperature corrosion according to claim 1,
the furnace tube of the heating furnace (19) is of a hollow structure with two open ends, and the weighing device (11) is arranged above the top end of the furnace tube.
3. The test apparatus for simulating high temperature corrosion according to claim 2,
the lifting mechanism control unit (32) can control the lifting mechanism to move up and down according to the input lifting speed and lifting distance parameters and drive the weighing device (11) to move up and down.
4. The test apparatus for simulating high temperature corrosion according to claim 2,
the weighing device box (10) is of a closed box structure consisting of a top cover and a base, and the base is provided with a through hole (17) capable of being communicated with the furnace tube and used for enabling a hanging piece for hanging a sample (26) to pass through.
5. The test apparatus for simulating high temperature corrosion according to claim 1,
and the cooling area (16) is connected with a tail gas treatment system (IV) through a pipeline.
6. The test apparatus for simulating high temperature corrosion according to claim 1,
the second sealing flange (22) is provided with an air inlet (23) connected with an air supply system (I);
a lens (24) is embedded in the second sealing flange (22) below the air inlet (23) in a sealing manner, the electronic control system (III) further comprises a monitoring data storage unit (35), and the monitoring data storage unit (35) is connected with the monitor (25) and used for storing a monitoring picture in the furnace;
and the display unit (39) is connected with the monitor (25) and the monitoring data storage unit (35) and is used for displaying the monitoring picture in the furnace in real time.
7. The test apparatus for simulating high temperature corrosion according to claim 6,
the gas supply system (I) comprises a plurality of gas storage devices for storing various corrosive gases, each gas storage device is communicated with the gas inlet (23) on the second sealing flange (22) sequentially through a respective branch pipeline and a mixing pipeline, a mass flowmeter (3) is arranged on each branch pipeline connected with each gas storage device, and a gas mixer is arranged on each mixing pipeline connected with each branch pipeline;
the electronic control system (III) comprises a gas flow control unit (37), wherein the gas flow control unit (37) is connected with each mass flow meter (3) and can control the mass flow meter (3) to measure according to input gas flow parameters.
8. The test apparatus for simulating high temperature corrosion according to claim 1,
the central constant-temperature area of the heating furnace (19) is provided with a temperature control thermocouple (21), the electric control system (III) further comprises a temperature control unit (34) connected with the temperature control thermocouple (21), the temperature control unit (34) can control the heating furnace (19) to heat according to input preset test temperature parameters, and meanwhile, the temperature control thermocouple (21) can be controlled to detect the temperature change in the furnace in real time and record the temperature in the furnace;
the display unit (39) is also capable of displaying the predetermined test temperature and the temperature inside the furnace in real time.
9. The test rig for simulating high temperature corrosion according to claim 8,
the periphery of the tube wall of the furnace tube of the heating furnace (19) is wrapped with a heat-insulating material, and the temperature-control thermocouple (21) is arranged in the heat-insulating material;
and a heating body is arranged in the heat-insulating material, and the heating body is a silicon-carbon heating body or a molybdenum dioxide heating body.
10. The test apparatus for simulating high temperature corrosion according to claim 1,
a plurality of partition boards which are arranged in a winding manner along the longitudinal direction are arranged in the absorption tower, and absorption alkali liquor is filled in the absorption tower and is used for dissolving and absorbing tail gas from the heating furnace (19).
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| CN108919670B (en) * | 2018-06-22 | 2021-08-24 | 光大环保技术研究院（南京）有限公司 | Semi-physical simulation test system and test method for waste incineration control system |
| CN109030140B (en) * | 2018-06-30 | 2020-12-11 | 西南石油大学 | Simulation test device and method for high-temperature water-wet curing of cement stone of thermal production well |
| CN109147970B (en) * | 2018-08-10 | 2021-06-08 | 中广核研究院有限公司 | Fuel cladding LOCA simulation test device |
| CN109507102A (en) * | 2018-12-03 | 2019-03-22 | 中国电子产品可靠性与环境试验研究所（（工业和信息化部电子第五研究所）（中国赛宝实验室）） | The test method of the damp and hot marine atmosphere performance of the resistance to height of turbo blade alloy material |
| CN109974999B (en) * | 2019-04-25 | 2023-09-12 | 西安热工研究院有限公司 | Device and method for dynamically simulating and testing falling of oxide skin of superheater reheater |
| CN110261287B (en) * | 2019-05-08 | 2020-10-27 | 西安交通大学 | Device and method for evaluating hot corrosion resistance of heat-resistant material in combustion atmosphere |
| CN110702597A (en) * | 2019-11-14 | 2020-01-17 | 西安热工研究院有限公司 | Atmosphere generating device for simulating coal-fired corrosive environment |
| CN112229782B (en) * | 2020-09-01 | 2021-08-10 | 华北电力大学 | Device for simulating corrosion research of liquid metal battery |
| CN112557292A (en) * | 2020-11-30 | 2021-03-26 | 西北有色金属研究院 | Device and method for evaluating ultrahigh-temperature water vapor oxidation corrosion of zirconium alloy coating |
| CN113219121B (en) * | 2021-02-28 | 2022-09-27 | 湘潭大学 | Oxidation simulation experiment device and method |
| CN113295605A (en) * | 2021-05-21 | 2021-08-24 | 中国石油化工股份有限公司 | Experimental device and experimental method for simulating soot corrosion or flue gas corrosion |
| CN113654976A (en) * | 2021-08-13 | 2021-11-16 | 北京航空航天大学 | Aeroengine high pressure rotor blade service environment simulation device |
| 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 |
| CN114062235B (en) * | 2021-11-09 | 2022-11-29 | 四川科力特油气技术服务有限公司 | Sulfur-containing gas corrosion high-sensitivity evaluation device and evaluation method |
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| CN1128350C (en) * | 2000-11-22 | 2003-11-19 | 中国科学院金属研究所 | Gas supplying system of mixed atmosphere for high-temp corrosion thermal balance measuring equipment |
| CN101799242B (en) * | 2010-01-29 | 2011-08-10 | 华中科技大学 | Controllable fast-heating up thermobalance reacting furnace |
| CN106151118B (en) * | 2016-08-16 | 2018-12-18 | 浙江特塑龙化工设备有限公司 | Environment-friendly type vacuum pump set |
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