CN102564887B - High heating rate controllable thermal balance - Google Patents
High heating rate controllable thermal balance Download PDFInfo
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- CN102564887B CN102564887B CN 201010590839 CN201010590839A CN102564887B CN 102564887 B CN102564887 B CN 102564887B CN 201010590839 CN201010590839 CN 201010590839 CN 201010590839 A CN201010590839 A CN 201010590839A CN 102564887 B CN102564887 B CN 102564887B
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- heating rate
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 27
- 238000002474 experimental method Methods 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims abstract description 9
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- 238000011160 research Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 5
- 239000004449 solid propellant Substances 0.000 abstract description 2
- 238000009529 body temperature measurement Methods 0.000 abstract 1
- 238000005485 electric heating Methods 0.000 abstract 1
- 238000007789 sealing Methods 0.000 abstract 1
- 239000000446 fuel Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 5
- 238000002309 gasification Methods 0.000 description 3
- 238000000197 pyrolysis Methods 0.000 description 3
- 238000001311 chemical methods and process Methods 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000035945 sensitivity Effects 0.000 description 2
- 239000002910 solid waste Substances 0.000 description 2
- 229910001220 stainless steel Inorganic materials 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
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Classifications
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
- G05D23/00—Control of temperature
- G05D23/19—Control of temperature characterised by the use of electric means
- G05D23/27—Control of temperature characterised by the use of electric means with sensing element responsive to radiation
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/52—Weighing apparatus combined with other objects, e.g. furniture
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
The invention discloses a high heating rate controllable thermal balance and belongs to electric heating experimental equipment. The equipment comprises a wire net reaction system, a temperature acquisition and control system and a quality acquisition system. The wire net reaction system comprises a double-layered metal wire net, a metal electrode, a wireless power supply device and a wireless receiving device. The materials are heated by current to be clamped between the double-layered metal wire net. The temperature acquisition and control system comprises a high-sensitivity temperature measurement device and a temperature control device; and the acquisition and the control of the temperature are completed by a computer. The quality acquisition system is used for converting the quality change of a sample into an electric signal and transmitting the electric signal into the computer for storage. A sealing cover is arranged outside the equipment to realize the experiments under different atmosphere conditions. The heating rate and the reaction atmosphere of the thermal balance can be controlled; the heating rate can be up to 1000 DEG C/s maximally; thereby realizing the accurate control to the sample temperature process and the real-time monitoring to the quality change of the sample. The high heating rate-controllable thermal balance provides conditions for the research on the thermo-chemical reaction characteristics and the reaction dynamics of solid fuels under the industrial conditions.
Description
Technical field
The invention belongs to electrical heating experimental facilities field, be specifically related to a kind of controlled high heating rate thermobalance, be applicable to that mainly various solid fuels such as coal, living beings and solid waste are at different atmosphere with near experiment and the theoretical research of the conflagration under the actual condition, pyrolysis and gasification property and reaction kinetics.
Background technology
Thermal chemical reaction mechanism such as solid-fuelled pyrolysis such as coal, living beings and solid waste, gasification and burning under researching high-temperature, the high heating rate, and grasp it and having very important significance near the physical and chemical process Changing Pattern under the full-scale condition.In order to simulate the course of reaction of fuel combustion in the actual motion, gasification, pyrolysis, set up forecast model accurately, the particle heating rate that obtains in heating process must be up to 10
2～10
5℃/s.
At present, the various thermochemistrys of fuel are utilized the main thermobalance that adopts of mechanism research of mode.The heating rate of conventional thermobalance generally has only 10～40 ℃/min, well below the heating rate of practical application.This makes the accuracy of research remain to be discussed.Therefore, how under the condition of particle heating rate near actual condition, accurately obtain the mass change of material, thereby obtain actual fuel reaction kinetic parameter, become the bottleneck of this class research.
Chinese patent, open day: on August 11st, 2010, publication number: CN101799242A, application number: 201010104591.9 patent of invention " a kind of controllable fast-heating up thermobalance reacting furnace ", the heating of employing two-part, the highest heating rate is 102 ℃/s, the heating rate in the actual motion.The heating principle of this device is that material is put into the high temperature constant temperature district, adopts the process of conducting heat that material is heated, so heating rate is low, the intensification course can't realize linear controlled.
Chinese patent, open day: on November 7th, 2007, publication number: CN200972442Y, application number: 200620127972.8 patent of invention " elevated temperature heat balance ", adopt tube type resistance furnace and electronic balance to constitute jointly thermobalance, utilize tube type resistance furnace that material is heated.This type of heating has determined that this device rate of heat addition is low, and energy consumption is bigger.
Summary of the invention
The technical problem to be solved in the present invention provides a kind of controlled high heating rate thermobalance, can be under the heating rate condition near actual condition, the sample quality that obtains various fuel changes and the particle temperature course, thereby obtain the reaction power mathematic(al) constant, for gas-solid reaction mechanism and the physical and chemical process Changing Pattern of grasping various fuel provides foundation.
The technical scheme that the present invention adopts for achieving the above object is:
The present invention includes gauze reactive system, temperature acquisition and control system, quality collection system.
The gauze reactive system comprises double-level-metal gauze, evener, metal electrode and radio source system.The radio source system comprises radio source electric supply installation and radio source receiving trap.Metal electrode is placed on the two ends of evener, and double-level-metal gauze two ends are clamped on the metal electrode.The radio source receiving trap links to each other with metal electrode, and the electric energy that provides by reception radio source electric supply installation makes the double-level-metal gauze have electric current to flow through, and uses electric current material to be carried out the heating of high heating rate.
Temperature acquisition and control system are provided with highly sensitive temperature measuring equipment, and highly sensitive temperature measuring equipment links to each other with power governor, and the measurement of temperature is carried out by computing machine automatically with control.Measure the particle temperature of sample by highly sensitive temperature measuring equipment, the temperature signal that measures is converted into electric signal through amplifier, wave filter effect and enters computing machine and carry out signal and handle.Temperature signal is after machine is controlled computing as calculated, and the output control signal is controlled power controller, realizes the control to heating rate.
Quality collection system adopts highly sensitive elementary errors balance, the mass change of sample is changed into electric signal in real time be transferred to and carry out continuous monitoring and storage in the electric control gear.Highly sensitive elementary errors balance has displacement detector, and the mass change of sample causes the evener displacement, and displacement detector changes into electric signal with detected displacement, and electric signal amplifies through amplifier, enters computing machine and stores.
Device of the present invention is outer can establish seal closure, by feed gas in seal closure, realizes the experiment under the different atmosphere condition.
Beneficial effect of the present invention is:
1) reaction unit heating rate height, scope are wide.The heating rate minimum is 10 ℃/min, is 1000 ℃/s to the maximum.The highest heating rate makes the research of fuel applications process more near actual condition near industrial condition.
2) the temperature-rise period linearity is controlled.Under the condition of linear temperature increase, accurately obtain mass change and the temperature history of sample.For simulation provides condition near the reaction kinetics process of the fuel under the industrial condition.
3) reaction atmosphere is controlled.The atmospheric condition of different purity is provided, satisfies the experiment under the higher atmosphere purity requirement condition.
Description of drawings
Accompanying drawing is embodiment of the invention structural representation.
Among the figure: 1 highly sensitive elementary errors balance; 2 eveners; 3 metal electrodes; 4 double-level-metal gauzes; 5 radio source receiving traps; 6 radio source electric supply installations; 7 highly sensitive temperature measuring equipments; 8 seal closures; 9 air intake openings; 10 exhausr ports.
Embodiment
Elaborate the present invention below in conjunction with specific embodiments and the drawings, but the present invention is not limited to specific embodiment.
Embodiment:
This device adopts the mode of current flow heats, and controlled current flow by the double-level-metal gauze, is produced intensification institute heat requirement.Highly sensitive elementary errors balance 1 has been formed the framework of equipment.Highly sensitive elementary errors balance 1 has evener 2, and metal electrode 3 is established at evener 2 two ends.In the operational process, double-level-metal gauze 4 is clamped on the metal electrode 3, and it is 200 purpose stainless steel gauzes that present embodiment double-level-metal gauze is chosen the aperture.Radio receiver 5 links to each other with metal electrode 3, and the electric energy by accepting wireless power supply 6 transmission heats the material of clamping between double-level-metal gauze 4 and gauze.
Temperature signal that highly sensitive temperature measuring equipment 7 measures is converted into electric signal through amplifier, wave filter effect and enters computing machine and carry out signal and handle.The temperature signal collection frequency is 100Hz, and after microprocessor was controlled computing, the output control signal was controlled power controller, realizes the control to heating rate.This device is provided with seal closure 8, and balance air intake opening 9 and exhausr port 10 are arranged on the seal closure.Atmosphere difference that can be according to demand during experiment feeds different gas in from balance air intake opening 9 to device.
Quality collection system adopts high sensitivity elementary errors balance 1 that the mass change of sample is changed into electric signal in real time and is transferred to and carries out continuous monitoring and storage in the computing machine.Because selecting the aperture for use is 200 purpose stainless steel gauzes, before the experiment testing sample is made the powder that particle diameter is 100-200 μ m, guarantee that like this sample can evenly spread out with the individual particle state when lay, the punching press impression of gauze prevents the excessive displacement of sample again.With the side of the even lay of testing sample in double-level-metal gauze 4, along with temperature raises, the mass change of sample is converted into telecommunications and is transferred to microcontroller by high sensitivity elementary errors balance 1 in real time and stores during experiment.
After experiment finishes, according to being stored in the kinetic parameter that temperature variation curve in the computing machine and mass change curve obtain reaction, the analytical reactions characteristic, infer reaction mechanism.
Claims (2)
1. controlled high heating rate thermobalance, comprise gauze reactive system, temperature acquisition and control system, quality collection system, it is characterized in that: the gauze reactive system comprises double-level-metal gauze (4), evener (2), metal electrode (3) and radio source system; The radio source system comprises radio source electric supply installation (6) and radio source receiving trap (5); Metal electrode is placed on the two ends of evener, and double-level-metal gauze two ends are clamped on the metal electrode; The radio source receiving trap links to each other with metal electrode, and the electric energy that provides by reception radio source electric supply installation makes the double-level-metal gauze have electric current to flow through, and uses electric current the material sample to be carried out the heating of high heating rate; Temperature acquisition and control system are provided with highly sensitive temperature measuring equipment (7), and highly sensitive temperature measuring equipment links to each other with power governor, and the measurement of temperature is carried out by computing machine automatically with control; Quality collection system adopts highly sensitive elementary errors balance (1), the mass change of material sample is changed into electric signal in real time be transferred to and carry out continuous monitoring and storage in the computing machine.
2. a kind of controlled high heating rate thermobalance according to claim 1, it is characterized in that: at gauze reactive system, temperature acquisition and control system, quality collection system peripheral hardware seal closure (8), by in seal closure, feeding gas, realize the experiment under the different atmosphere condition.
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010590839 CN102564887B (en) | 2010-12-16 | 2010-12-16 | High heating rate controllable thermal balance |
| JP2013543500A JP2014505237A (en) | 2010-12-16 | 2011-03-15 | A kind of thermobalance with high heating rate control |
| PCT/CN2011/071793 WO2012079314A1 (en) | 2010-12-16 | 2011-03-15 | Thermobalance with controllable high heating rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010590839 CN102564887B (en) | 2010-12-16 | 2010-12-16 | High heating rate controllable thermal balance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102564887A CN102564887A (en) | 2012-07-11 |
| CN102564887B true CN102564887B (en) | 2013-07-10 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010590839 Active CN102564887B (en) | 2010-12-16 | 2010-12-16 | High heating rate controllable thermal balance |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2014505237A (en) |
| CN (1) | CN102564887B (en) |
| WO (1) | WO2012079314A1 (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104374669B (en) * | 2014-11-19 | 2017-02-22 | 东北大学 | Direct reduction and smelting reduction linked testing device and use method thereof |
| CN104568649A (en) * | 2015-01-21 | 2015-04-29 | 杨康莉 | Device and method for testing total flooding critical fire extinguishing concentration of superfine powder fire extinguishing agent |
| CN109900587A (en) * | 2019-03-09 | 2019-06-18 | 徐立杰 | A kind of device of the measurement heat-sensitive materials water content with multiple measurement positions |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6125687A (en) * | 1998-08-20 | 2000-10-03 | International Business Machines Corporation | Apparatus for measuring outgassing of volatile materials from an object |
| CN200972442Y (en) * | 2006-10-24 | 2007-11-07 | 中国科学院山西煤炭化学研究所 | High temp. thermobalance |
| CN101799242A (en) * | 2010-01-29 | 2010-08-11 | 华中科技大学 | Controllable fast-heating up thermobalance reacting furnace |
| CN201903489U (en) * | 2010-12-16 | 2011-07-20 | 大连理工大学 | High heating rate controllable thermal balance |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6418042A (en) * | 1987-07-14 | 1989-01-20 | Mitsubishi Heavy Ind Ltd | Thermogravimetric and gas analyzer |
| JP2667021B2 (en) * | 1989-10-19 | 1997-10-22 | 株式会社ケット科学研究所 | Method and apparatus for measuring moisture in infrared moisture meter |
| JPH053982U (en) * | 1991-07-05 | 1993-01-22 | 財団法人シツプ・アンド・オーシヤン財団 | Thermogravimetric analyzer |
| JP2563852Y2 (en) * | 1993-07-09 | 1998-02-25 | 株式会社ケット科学研究所 | Heat drying type moisture meter |
| JP3113998B2 (en) * | 1993-07-22 | 2000-12-04 | 住友化学工業株式会社 | Thermal analyzer |
| CN2445321Y (en) * | 2000-11-22 | 2001-08-29 | 中国科学院金属研究所 | Multi-atmosphere high-temp corrosion thermobalance measuring means |
| US20040141541A1 (en) * | 2002-12-02 | 2004-07-22 | John Williams | MEMS-based thermogravimetric analyzer |
| JP2009517630A (en) * | 2005-07-27 | 2009-04-30 | エル−３ コミュニケイションズ サイテラ コーポレイション | Energy substance detector |
| JP5215744B2 (en) * | 2008-06-13 | 2013-06-19 | 株式会社エー・アンド・デイ | Moisture meter |
| CN101382478A (en) * | 2008-08-18 | 2009-03-11 | 山东大学 | Gravitational thermal analysis method and device for heating sample by microwave |
| CN201373831Y (en) * | 2009-02-23 | 2009-12-30 | 斯芹 | Pressurized thermo-balance measurement device |
-
2010
- 2010-12-16 CN CN 201010590839 patent/CN102564887B/en active Active
-
2011
- 2011-03-15 WO PCT/CN2011/071793 patent/WO2012079314A1/en active Application Filing
- 2011-03-15 JP JP2013543500A patent/JP2014505237A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6125687A (en) * | 1998-08-20 | 2000-10-03 | International Business Machines Corporation | Apparatus for measuring outgassing of volatile materials from an object |
| CN200972442Y (en) * | 2006-10-24 | 2007-11-07 | 中国科学院山西煤炭化学研究所 | High temp. thermobalance |
| CN101799242A (en) * | 2010-01-29 | 2010-08-11 | 华中科技大学 | Controllable fast-heating up thermobalance reacting furnace |
| CN201903489U (en) * | 2010-12-16 | 2011-07-20 | 大连理工大学 | High heating rate controllable thermal balance |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2012079314A1 (en) | 2012-06-21 |
| JP2014505237A (en) | 2014-02-27 |
| CN102564887A (en) | 2012-07-11 |
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