CN203191273U - Thermogravimetric analysis device for coal performance test - Google Patents
Thermogravimetric analysis device for coal performance test Download PDFInfo
- Publication number
- CN203191273U CN203191273U CN 201320209572 CN201320209572U CN203191273U CN 203191273 U CN203191273 U CN 203191273U CN 201320209572 CN201320209572 CN 201320209572 CN 201320209572 U CN201320209572 U CN 201320209572U CN 203191273 U CN203191273 U CN 203191273U
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- coal
- crucible
- thermogravimetric analysis
- analysis device
- burner hearth
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Abstract
The utility model discloses a thermogravimetric analysis device for coal performance test. The thermogravimetric analysis device is characterized in that a balance is placed on a working platform and is used for measuring the mass of sample coal in a crucible; the crucible is hung at the bottom of the balance by a hanging wire; a tubular resistance furnace is positioned below the working platform; the crucible is positioned in the hearth in the tubular resistance furnace; an air inlet and an air outlet are respectively formed on the side wall of the hearth; an air atmosphere or an weak reducing atmosphere which simulates the hearth of a boiler is introduced into the hearth through the air inlet; a temperature controller is used for controlling the heating rate of the tubular resistance furnace; a thermocouple is used for measuring the temperature value in the hearth.
Description
Technical field
The utility model relates to a kind of coal-fired thermogravimetric analysis device, especially is applied in thermal power plant, at the coal-fired thermogravimetric analysis device of the combustion characteristics of fire coal.
Background technology
Along with coal supply day is becoming tight, burned coal price sharply rises, and for reducing cost of electricity-generating, most of thermal power plants realize the power mixed coal.Mixed coal is a simple mechanical mixture process, but the combustion characteristics of mixing back coal grain is not simple weighted stacking, owing to can influence each other in combustion process, mutual restriction is difficult to predict simply the combustion characteristics of mixed coal.And the combustion characteristics of mixed coal comprises its kindling point, burnout characteristic and steady combustion property etc., directly influences security, economy and the feature of environmental protection of boiler actual production.Thermal power plant has to fire coal is done the thermogravimetric analysis experiment for analyzing the combustion characteristics of mixed coal.
But at present, commercially available thermogravimetric analyzer has following problem:
1, expensive, only be equipped with to some extent in research unit usually, most of thermal power plants need deliver to relevant unit with coal sample and analyze in order to grasp coal-fired burning performance.Such process often is difficult in time obtain related data, and influence is produced.
2, the sample size of be used for analyzing is the mg level, little sample size like this, and for the unevenness of thermal power plant's fire coal, as easy as rolling off a log generation error is difficult to accurately show the situation of change of the weightless situation of fired coal combustion and ignition temperature.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, provide a kind of be suitable for practicality, can be for producing the thermogravimetric analysis device that is used for coal-fired performance test that test data in time is provided.
The utility model adopts following technical scheme for the technical solution problem:
The design feature that the utility model is used for the thermogravimetric analysis device of coal-fired performance test is to arrange:
One balance places on the workbench, is used for measuring the quality of crucible sample fire coal; Described crucible is by hanging a bottom that is suspended on balance;
One resistance tube stove, be in the below of workbench, described crucible is arranged in the burner hearth of resistance tube stove, is respectively arranged with air intake opening and gas outlet at the sidewall of described burner hearth, importing by air intake opening is air atmosphere in described burner hearth, or the weak reducing atmosphere of simulation boiler furnace.
One temperature controller is for the rate of heat addition of the described resistance tube stove of control;
One thermopair is for the temperature value of measuring described burner hearth.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model adopts day gentle resistance tube stove as quality measurement system and the heating system of thermogravimetric analysis device; To hang silk as mass sensor, the quality of sample fire coal can reach 1g, realizes the bigger thermogravimetric analysis of coal sample quality, especially for the problem that has coal-fired inhomogeneous characteristic one good solution is arranged.
2, the utility model test process is quick, can in time obtain test data, is used for instructing producing.
3, the utility model experimentation is stable, the experimental phenomena performance is clear.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 realizes novel thermogravimetric curve for this.
Number in the figure: 1 electronic balance, 2 experiment tablees, 3 hang silk, 4 burner hearths, 5 gas outlets, 6 refractory brick, 7 air intake openings, 8 resistance tube stoves, 9 monkeys, 10 thermopairs, 11 heating and temperature controlling devices, 12 atmosphere adjustment devices, 13 gas cylinders.
Embodiment
Referring to Fig. 1, the thermogravimetric analysis device that is used for coal-fired performance test in the present embodiment is to arrange:
The version of present embodiment, its assembled material total cost only is 1%～5% of thermogravimetric analyzer of the prior art.
In concrete the enforcement, temperature controller 11 is and resistance tube stove 8 support equipments, be used for the control programming rate, balance 1 is placed on the experiment table 2, with experiment table 2 perforation, to hang silk 3 and in the perforation of experiment table 2, run through, crucible hangs by hanging silk 3, hang silk 3 and should not touch the side of experiment table 2 and burner hearth 4, to guarantee the accuracy of balance measurement; Burner hearth 4 in the resistance tube stove 8 is heat-resisting burner hearth, roof of the furnace is annotated by refractory brick 6 envelopes, stay an aperture, allow the extension silk hang, hang silk and can not touch refractory brick, burner hearth is connected with gas cylinder 13 by air intake opening 7, and regulates gas composition and the flow that enters in the burner hearth by atmosphere adjustment device 12, gas flow can not be very big, generally is not more than 3.5L/min.Flow is excessive, can make the balance indeterminacy.。
During experiment, the sample fire coal is put into crucible, regulate gas composition and flow in the burner hearth, set heating rate, heating tubulose resistance furnace, every interval certain hour, quality and fire box temperature that recording balance is measured; Mass change is converted into weight-loss ratio divided by the sample coal quantity, is ordinate with the weight-loss ratio, and temperature variation is the horizontal ordinate mapping, gets thermogravimetric curve (DTG curve) as shown in Figure 2.Curve among Fig. 2 clearly shows the combustion characteristics of sample fire coal, and its sample fired coal combustion is steady.
Claims (2)
1. thermogravimetric analysis device that is used for coal-fired performance test is characterized in that arranging:
One balance (1) places on the workbench (2), is used for measuring the quality of crucible (9) sample fire coal; Described crucible (9) is the bottom that is suspended on balance (1) by extension silk (3);
One resistance tube stove (8), be in the below of workbench (2), described crucible (9) is arranged in the burner hearth (4) of resistance tube stove (8), sidewall at described burner hearth (4) is respectively arranged with air intake opening (7) and gas outlet (5), importing by air intake opening (7) is air atmosphere in described burner hearth (4), or the weak reducing atmosphere of simulation boiler furnace;
One temperature controller (11) is for the rate of heat addition of the described resistance tube stove of control (8);
One thermopair (10) is for the temperature value of measuring described burner hearth (4).
2. the thermogravimetric analysis device for coal-fired performance test according to claim 1 is characterized in that described extension silk (3) adopts platinum wire.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209572 CN203191273U (en) | 2013-04-23 | 2013-04-23 | Thermogravimetric analysis device for coal performance test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320209572 CN203191273U (en) | 2013-04-23 | 2013-04-23 | Thermogravimetric analysis device for coal performance test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203191273U true CN203191273U (en) | 2013-09-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320209572 Expired - Fee Related CN203191273U (en) | 2013-04-23 | 2013-04-23 | Thermogravimetric analysis device for coal performance test |
Country Status (1)
| Country | Link |
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| CN (1) | CN203191273U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089477A (en) * | 2014-07-17 | 2014-10-08 | 济南大学 | Thermogravimetric analysis furnace |
| CN104849174A (en) * | 2015-05-14 | 2015-08-19 | 北京科技大学 | Simple device and method for reduction weight loss measurement in hydrogen gas |
| CN106018155A (en) * | 2016-08-16 | 2016-10-12 | 王宏铭 | System for evaluating nickel catalyst inactivation performance |
| CN107345886A (en) * | 2016-05-04 | 2017-11-14 | 神华集团有限责任公司 | Determine coal thermal weight loss performance and thermal conductivity and the apparatus and method of measure coal or coke reactivity |
| WO2018054068A1 (en) * | 2016-09-22 | 2018-03-29 | 安徽理工大学 | Coal oxidation characteristic testing device based on coal and gas cogeneration and testing method thereof |
-
2013
- 2013-04-23 CN CN 201320209572 patent/CN203191273U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104089477A (en) * | 2014-07-17 | 2014-10-08 | 济南大学 | Thermogravimetric analysis furnace |
| CN104849174A (en) * | 2015-05-14 | 2015-08-19 | 北京科技大学 | Simple device and method for reduction weight loss measurement in hydrogen gas |
| CN104849174B (en) * | 2015-05-14 | 2017-09-15 | 北京科技大学 | The weightless device and method determined is reduced in a kind of simple hydrogen gas |
| CN107345886A (en) * | 2016-05-04 | 2017-11-14 | 神华集团有限责任公司 | Determine coal thermal weight loss performance and thermal conductivity and the apparatus and method of measure coal or coke reactivity |
| CN106018155A (en) * | 2016-08-16 | 2016-10-12 | 王宏铭 | System for evaluating nickel catalyst inactivation performance |
| WO2018054068A1 (en) * | 2016-09-22 | 2018-03-29 | 安徽理工大学 | Coal oxidation characteristic testing device based on coal and gas cogeneration and testing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130911 Termination date: 20190423 |