CN109507360A - The experimental provision and test method of carbonate high-temperature calcination response characteristic under the conditions of a kind of hot carrier gas temperature concussion - Google Patents
The experimental provision and test method of carbonate high-temperature calcination response characteristic under the conditions of a kind of hot carrier gas temperature concussion Download PDFInfo
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Abstract
The experimental provision and test method of carbonate high-temperature calcination response characteristic under the conditions of a kind of hot carrier gas temperature concussion, including grain bed calcination reaction experimental section, carbon dioxide heating system, carbon dioxide cooling system, dedusting and dynamical system, data acquisition control system etc..Test device can study influence of the hot carrier gas temperature concussion of carbon dioxide to carbonate high-temperature calcination response characteristic, while used cycle fluid is the product of high-temperature calcination reaction, and the resource utilization of product may be implemented.
Description
Technical field
The invention belongs to the industries raw material high-temperature calcinations such as metallurgy, chemical industry to react reinforcement technique field, in particular to a kind of heat
The experimental provision and test method of carbonate high-temperature calcination response characteristic under the conditions of carrier gas temperature concussion.
Background technique
For metallurgy, in chemical field, bulk cargo calcination process has that bulk cargo bed temperature is uneven and product quality is irregular not
Neat feature needs just to can solve heating present in bulk cargo bed using effective heating method and strengthened and temperature homogenisation phase
The problem of contradiction, effectively improves product quality, has a very important significance to promoting metallurgy, chemical industry to develop.Shaft furnace tool
Have the advantages that the thermal efficiency is high, yield is big, becomes a kind of bulk cargo calciner with broad prospect of application.But its internal temperature is equal
Even property outstanding problem, needs to improve by relevant experimental study.
At present for bulk cargo calcination process temperature homogenisation and reaction strengthen experimental study it is less, have document point out hot-fluid with
Time facilitates the temperature homogenisation of material with the heating method that cosine formula, square wave formula change, but is only simulated to individual particle,
And there is very big simplification in model, while alternation heating method is still unintelligible to the action characteristic of bulk cargo bed.And by carbonic acid
Working medium of the product carbon dioxide of salt calcination reaction as the circulatory system, may be implemented the resource utilization of carbon dioxide, but right
The influence of reaction is unclear.For this purpose, needing the reality of carbonate high-temperature calcination response characteristic under the conditions of kind of hot carrier gas temperature concussion
Experiment device.
Summary of the invention
In order to overcome the disadvantages of the above prior art, the purpose of the present invention is to provide a kind of hot carrier gas temperatures to shake condition
The experimental provision and test method of lower carbonate high-temperature calcination response characteristic can study the hot carrier gas temperature concussion item of carbon dioxide
Carbonate high-temperature calcination response characteristic under part.
To achieve the goals above, the technical solution adopted by the present invention is that:
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of a kind of hot carrier gas temperature concussion, comprising:
Experimental section 8, it is cylindrical, it is horizontally disposed with, carries out grain bed calcination reaction wherein；
Carbon dioxide heating system, including the pipeline 1 being connect with 8 one end of experimental section and be wrapped in except pipeline 1 with
The connected multiple rotary heating furnaces of control cabinet, heat from the carbon dioxide that the end enters experimental section 8 to through pipeline 1, pass through
The power of each rotary heating furnace is controlled, so that the carbon dioxide temperature of pipeline 1 is in dynamic change out；
Carbon dioxide cooling system 10 connects the other end of experimental section 8, carries out to the carbon dioxide for bringing out experimental section 8 from this
It is cooling；
Dedusting and dynamical system connect between carbon dioxide cooling system 10 and carbon dioxide heating system, after cooling
Carbon dioxide dedusting after, be sent into carbon dioxide heating system heats, formed circulation；
Data acquisition control system 15 acquires the ambient parameter data in reaction process.
It is disposed with and 15 phase of data acquisition control system on 8 inside of experimental section different axial position and radial position
Temperature sensor and pressure sensor even.
Wire mesh 15 is provided in the pipeline 1.
The carbon dioxide temperature of the pipeline 1 out changes in square wave or cosine wave.
The heating furnace include for be preheating to assigned temperature positioned at front side heating furnace and for control concussion heating
The heating furnace positioned at rear side, the number of the heating furnace for preheating be at least calcination reaction temperature and environment temperature difference divided by
Each heating furnace can heat the temperature difference of raising, and the heating furnace for controlling concussion heating at least needs 1, to realize temperature
Concussion variation.
The carbon dioxide cooling system 10 uses finned tube exchanger, carbon dioxide flows direction and cooling water in adverse current
Arrangement is separately installed on the inlet and outlet pipeline of heat exchanger gas side and water side and is connected with data acquisition control system 14
Temperature sensor.
The dedusting and dynamical system include bag filter 11, centrifugal blower 13 and frequency converter 12, in centrifugal blower 13
Exit the flow sensor being connected with data acquisition control system 14 is installed.
The carbon dioxide that the present invention is generated using 8 high-temperature calcination of experimental section reaction is cycle fluid.
The present invention also provides one kind based on carbonate high-temperature calcination response characteristic under the conditions of the hot carrier gas temperature concussion
Experimental provision test method, comprising:
1) circulatory system carbon dioxide flow controls:
Data acquisition control system 14 enters the carbon dioxide stream of carbon dioxide heating system by reading flow flowmeter measurement
Information is measured, by adjusting the registration of frequency converter 12, the carbon dioxide flow in the circulatory system is adjusted, until reaching setting
Value；
2) experimental section entrance carbon dioxide temperature controls:
Data acquisition control system 14 is entered before and after carbon dioxide heating system by reading temperature sensor data measurement
Temperature information, the power of each heating furnace is adjusted by control cabinet, the temperature of furnace outlet carbon dioxide is made to reach carbonic acid
The calcination reaction temperature of salt, and be in dynamic change；
3) experimental section interior temperature distribution measures
The temperature sensor number of axially and radially position different in experimental section 8 is read by data acquisition control system 14
According to the non-uniform Distribution of temperature during acquisition calcination reaction；
4) high-temperature calcination reaction product activity and yield monitoring
It is measured by the weight to experiment front and back experimental section 8, converses the production quantity of carbonate calcination decomposition product；
By by decomposition product aquation, and certain density hydrochloric acid is added, according to the consumption of hydrochloric acid under certain time, converses product
Activity degree.
Carbon dioxide cycle system flow control of the present invention: carbon dioxide flow setting value is obtained according to the operating condition of setting,
When setting value is not achieved in gas flow, frequency converter is adjusted, the power of blower is increased.
The control of experimental section entrance carbon dioxide temperature: being respectively controlled by power of the control cabinet to each heating furnace,
Change the power of each heating furnace of streamwise in square wave or cosine wave, the dynamic regulation of carbon dioxide temperature；In order to protect
The uniformity for demonstrate,proving heating system outlet temperature, adds wire mesh in the pipeline of heating system.
The measurement of experimental section interior temperature distribution: axial position different in experimental section is read according to data acquisition control system
The reading of temperature sensor, axial Temperature Distribution, is equivalent to vertical piston stream moving bed endoparticle motion process in grain bed
In temperature change.
High-temperature calcination reaction product activity and yield monitoring: being measured by the weight to experiment front and back experimental section, can
To converse the consumption and product formation of carbonate during carbonate calcination；By a certain amount of Product samples aquation, together
When with certain density hydrochloric acid, the hydroxide generated in product hydration process is neutralized, hydrochloric acid when accurate recording lucky 10min
Consumption, with the activity degree for ml indicating product of 10min consumption hydrochloric acid.
The present invention can study the hot carrier gas temperature concussion condition of carbon dioxide to carbonate high temperature on an experimental provision
The affecting laws of calcining and decomposing reaction.
Compared with prior art, the beneficial effects of the present invention are:
1, under a kind of carbon dioxide atmosphere of the present invention carbonate high-temperature calcination response characteristic experimental provision and test method,
The response characteristic that high-temperature burning process under carbon dioxide atmosphere can be studied makes up existing study only for air atmosphere not
Foot；
2, under a kind of carbon dioxide atmosphere of the present invention carbonate high-temperature calcination response characteristic experimental provision and test method,
Maximum temperature can arrive 1200K, widen the range of experimental study, can study the high temperature of different carbonate under carbon dioxide atmosphere
Calcination reaction characteristic.
3, under a kind of carbon dioxide atmosphere of the present invention carbonate high-temperature calcination response characteristic experimental provision and test method,
The influence of hot carrier gas temperature square wave or cosine concussion to high-temperature calcination reaction process can be studied.
4, under a kind of carbon dioxide atmosphere of the present invention carbonate high-temperature calcination response characteristic experimental provision and test method,
Used cycle fluid is the product of high-temperature calcination reaction, and the resource utilization that product may be implemented utilizes, environmentally protective nothing
Pollution.
Detailed description of the invention
Fig. 1 is overall structure diagram of the invention.
Fig. 2 is the installation site of radial temperature sensor in experimental section.
Fig. 3 is pipeline inner wire net schematic diagram in carbon dioxide heating system.
Specific embodiment
The embodiment that the present invention will be described in detail with reference to the accompanying drawings and examples.
Referring to Fig. 1, the inventive system comprises experimental sections 8, the carbon dioxide heating system being connected with experimental section 8, dioxy
Change carbon cooling system 11, dedusting and dynamical system and data acquisition control system 15.
Referring to Fig. 1 and Fig. 2, experimental section 8 is cylindrical, is horizontally disposed with, for the bed structure full of carbonate particle, wherein
Carry out grain bed calcination reaction.It is disposed on the inside of experimental section 8 different axial position and radial position and data acquisition control
The connected temperature sensor and pressure sensor of system 14, specifically may be mounted at each section of 9 junction of flange.Temperature sensing
Device is at least equally spaced 5 in the axial direction of experimental section 1, for monitoring Axial Temperature Distribution in experimental section；In experimental section 1
Radial arrangement 3 is located at experimental section middle line, by near wall position and 1/2 radial location.
Carbon dioxide heating system include the pipeline 1 being connect with 8 one end of experimental section and be wrapped in except pipeline 1 with control
Cabinet processed connected multiple rotary heating furnaces select 6 in figure, are heating furnace 1, heating furnace 23, heating furnace 34, heating respectively
Furnace 45, heating furnace 56, heating furnace 67.Wire mesh 15 can be set in pipeline 1, as shown in Figure 3.Carbon dioxide heating system
System is heated to through pipeline 1 from the carbon dioxide that the end enters experimental section 8, is equipped on the inlet/outlet pipe road of heating system
The temperature sensor being connected with data acquisition control system 15.By controlling the power of each rotary heating furnace, make to obtain
The carbon dioxide temperature of pipeline 1 is in dynamic change, such as square wave or cosine wave variation.
Carbon dioxide cooling system 10 connects the other end of experimental section 8, using finned tube exchanger, carbon dioxide flows side
To being in counter-flow arrangement with cooling water, it is separately installed on the inlet and outlet pipeline of heat exchanger gas side and water side and is acquired with data
The connected temperature sensor of control system 14, carbon dioxide cooling system 10 carry out the carbon dioxide that experimental section 8 is brought out from this
It is cooling.
Dedusting and dynamical system connect between carbon dioxide cooling system 10 and carbon dioxide heating system, including cloth bag
Deduster 11, centrifugal blower 13 and frequency converter 12 are equipped with and data acquisition control system 14 in the exit of centrifugal blower 13
Connected flow sensor.After dedusting and dynamical system are to carbon dioxide dedusting after cooling, it is sent into carbon dioxide heating system
Heating forms circulation.
Data acquisition control system 15 acquires the ambient parameter data in reaction process, different including 8 inside of experimental section
Temperature and pressure data on axial position and radial position, the temperature data of carbon dioxide heating system import and export, dioxy
Change the temperature data of 10 gas side of carbon cooling system and water side import and export and the data on flows of blower 13.
The number of the heating furnace determines that entire heating part includes using according to temperature change section and concussion heating requirements
In the heating furnace (front) for being preheating to assigned temperature and the heating furnace (rear side) heated for controlling concussion.For preheating heat rate
Number be at least calcination reaction temperature and environment temperature difference and can heat the temperature difference of raising divided by each heating furnace.(such as
Reaction temperature is 800 DEG C, and single heating furnace can heat up 150 DEG C, then at least needs 800/150=5.33).It is shaken for controlling
The heating furnace for swinging heating at least needs 1, and the concussion variation of temperature can be realized.
For example, reaction temperature is 800 DEG C, single heating furnace can heat up 150 DEG C, select 6 to be used for heating furnace for preheating (1-
6#) and 1 for controlling the heating furnace (7#) of concussion heating.6, front heating furnace is by the carbon dioxide temperature in pipeline 1 from ring
Border temperature is gradually heated to 750 DEG C.By controlling the power of No. 7 heating furnaces, it is heated to 7# heating furnace by carbon dioxide temperature
It 850 DEG C -750 DEG C -850 DEG C -750 DEG C, moves in circles, the square-wave variations of carbon dioxide temperature can be realized.
On the basis of square wave, increases the heating furnace quantity for controlling concussion heating, carbon dioxide temperature can be realized
Cosine wave variation.
For the carbon dioxide that the present invention is generated using 8 high-temperature calcination of experimental section reaction as cycle fluid, test method is as follows:
1) circulatory system carbon dioxide flow controls:
Data acquisition control system 14 is followed by the carbon dioxide that reading flow flowmeter measurement enters carbon dioxide heating system
Flow information, by adjust frequency converter 12 registration, change blower 13 flow, to the carbon dioxide flow in the circulatory system into
Row is adjusted；When setting value is not achieved in gas flow, the reading of frequency converter 12 is tuned up, increases the power of blower 13.
2) experimental section entrance carbon dioxide temperature controls:
Data acquisition control system 14 is entered by the temperature sensor measurement before and after reading carbon dioxide heating system and is added
Temperature information before and after hot systems is crossed control cabinet and is respectively controlled to the power of each heating furnace 2-7, makes furnace outlet two
The temperature of carbonoxide changes in square wave or cosine wave, realizes the dynamic regulation of carbon dioxide temperature；In order to guarantee that heating system goes out
The uniformity of mouth temperature, adds wire mesh 15 in the pipeline 1 of heating system.
The temperature sensor number of axially and radially position different in experimental section 8 is read by data acquisition control system 14
According to the non-uniform temperature during acquisition calcination reaction is distributed；It is measured by the weight to experiment front and back experimental section 8, it can
To converse the production quantity of carbonate calcination decomposition product；By by decomposition product aquation, and certain density hydrochloric acid, root is added
According to the consumption of hydrochloric acid under certain time, the activity degree of product is conversed.
Referring to Fig. 1, when carbonate particle high-temperature calcination reactivity worth is tested under the conditions of needing to uniform heat carrier gas temperature,
According to experimental test content experimental section 8 and remaining system are attached in the experimental section assembling stage, it is ensured that each interface without
Leakage.
Before experiment starts, as shown in Figure 1, adjusting the reading of frequency converter 12 by opening 13 power supply of blower, making carbon dioxide
It is circulated, obtains the initial flow and speed of carbon dioxide；
After the stability of flow of carbon dioxide, by the control cabinet of adjusting heating system, the power of heating furnace 2-7 is adjusted,
So that the temperature of furnace outlet carbon dioxide is reached the calcination reaction temperature of carbonate, and change in square wave or cosine wave, starts
Carry out the calcination reaction characteristic test of experimental section 8.
After the reactant reaction of experimental section is complete, the power supply of frequency converter 12 and blower 13 is closed；If you need to carry out further
Performance test, can be by replacing experimental section, the flow and temperature for adjusting carbon dioxide reach setting value, repeat the above step
Suddenly, the performance test of next step is carried out.
Pass through the calcining to the experimental section equipped with different porosities under the conditions of the hot carrier gas temperature of different carbon dioxide shakes
Response characteristic test can evaluate hot carrier gas temperature concussion to the mechanism of action of carbonate high-temperature calcination response characteristic.
Claims (9)
1. the experimental provision of carbonate high-temperature calcination response characteristic under the conditions of a kind of hot carrier gas temperature concussion, which is characterized in that packet
It includes:
Experimental section (8), it is cylindrical, it is horizontally disposed with, carries out grain bed calcination reaction wherein；
Carbon dioxide heating system including the pipeline (1) connecting with experimental section (8) one end and is wrapped in except pipeline (1)
The multiple rotary heating furnaces being connected with control cabinet add to through pipeline (1) from the carbon dioxide that the end enters experimental section (8)
Heat, by controlling the power of each rotary heating furnace, so that the carbon dioxide temperature of pipeline (1) is in dynamic change out；
Carbon dioxide cooling system (10), connects the other end of experimental section (8), to brought out from this carbon dioxide of experimental section (8) into
Row cooling；
Dedusting and dynamical system connect between carbon dioxide cooling system (10) and carbon dioxide heating system, to after cooling
After carbon dioxide dedusting, carbon dioxide heating system heats are sent into, form circulation；
Data acquisition control system (15) acquires the ambient parameter data in reaction process.
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of 2. hot carrier gas temperature shakes according to claim 1,
It is characterized in that, being disposed with and data acquisition control system on the experimental section (8) internal different axial position and radial position
The connected temperature sensor and pressure sensor of system (15).
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of 3. hot carrier gas temperature shakes according to claim 1,
It is characterized in that, being provided with wire mesh (15) in the pipeline (1).
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of 4. hot carrier gas temperature shakes according to claim 1,
It is characterized in that, the carbon dioxide temperature of pipeline (1) out changes in square wave or cosine wave.
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of 5. hot carrier gas temperature shakes according to claim 1,
It is characterized in that, the heating furnace include for be preheating to assigned temperature positioned at front side heating furnace and for control concussion plus
The heating furnace positioned at rear side of heat, the number of the heating furnace for preheating is at least calcination reaction temperature and environment temperature difference is removed
The temperature difference that raising can be heated with each heating furnace, the heating furnace for controlling concussion heating at least needs 1, to realize temperature
Concussion variation.
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of 6. hot carrier gas temperature shakes according to claim 1,
It is characterized in that, the carbon dioxide cooling system (10) uses finned tube exchanger, carbon dioxide flows direction and cooling water
In counter-flow arrangement, it is separately installed on the inlet and outlet pipeline of heat exchanger gas side and water side and data acquisition control system
(14) connected temperature sensor.
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of 7. hot carrier gas temperature shakes according to claim 1,
It is characterized in that, the dedusting and dynamical system include bag filter (11), centrifugal blower (13) and frequency converter (12), from
The exit of heart blower (13) is equipped with the flow sensor being connected with data acquisition control system (14).
The experimental provision of carbonate high-temperature calcination response characteristic under the conditions of 8. hot carrier gas temperature shakes according to claim 1,
It is characterized in that, the carbon dioxide generated using experimental section (8) high-temperature calcination reaction is cycle fluid.
9. one kind is reacted based on carbonate high-temperature calcination under the conditions of hot carrier gas temperature concussion described in any one of claim l-8
The test method of the experimental provision of characteristic characterized by comprising
1) circulatory system carbon dioxide flow controls:
Data acquisition control system (14) enters the carbon dioxide flow of carbon dioxide heating system by reading flow flowmeter measurement
Information is adjusted the carbon dioxide flow in the circulatory system, by adjusting the registration of frequency converter (12) until reaching setting
Value；
2) experimental section entrance carbon dioxide temperature controls:
Data acquisition control system (14) is entered before and after carbon dioxide heating system by reading temperature sensor data measurement
Temperature information adjusts the power of each heating furnace by control cabinet, and the temperature of furnace outlet carbon dioxide is made to reach carbonate
Calcination reaction temperature, and be in dynamic change；
3) experimental section interior temperature distribution measures
The temperature sensor number of axially and radially position different in experimental section (8) is read by data acquisition control system (14)
According to the non-uniform Distribution of temperature during acquisition calcination reaction；
4) high-temperature calcination reaction product activity and yield monitoring
It is measured by the weight to experiment front and back experimental section (8), converses the production quantity of carbonate calcination decomposition product；It is logical
It crosses decomposition product aquation, and certain density hydrochloric acid is added, according to the consumption of hydrochloric acid under certain time, converse product
Activity degree.
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| CN111707698A (en) * | 2020-07-16 | 2020-09-25 | 西安交通大学 | Experimental device and test method for high-temperature calcination reaction characteristics in flow and temperature cooperative alternating heating mode |
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| CN111811276A (en) * | 2020-07-16 | 2020-10-23 | 西安交通大学 | High-temperature circulating alternating heating experimental system and method |
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