CN205157361U - Oxidation reaction generates measuring equipment of moisture among coal low temperature oxidation process - Google Patents
Oxidation reaction generates measuring equipment of moisture among coal low temperature oxidation process Download PDFInfo
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- CN205157361U CN205157361U CN201520713037.9U CN201520713037U CN205157361U CN 205157361 U CN205157361 U CN 205157361U CN 201520713037 U CN201520713037 U CN 201520713037U CN 205157361 U CN205157361 U CN 205157361U
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Abstract
The utility model provides a measuring device of oxidation reaction formation moisture among the coal low temperature oxidation process, includes that two are surveyed moisture balance, trachea fixed band, resistance furnace and two quartzy reactors. In the resistance furnace was arranged in to two quartzy reactors, its bottom let in air and nitrogen gas respectively, and the coal sample is placed at quartzy reactor. Quartzy reactor upper end is equipped with gas conduit, gas conduit and the gas introduction union coupling of surveying the moisture balance. The trachea fixed band is fixed with gas conduit and gas introduction pipe. The utility model discloses simple structure, through monitoring coal oxidation and add the moisture quality of thermal generation under the nitrogen gas under the air in step, the moisture that utilizes moisture that its difference generated the oxidation of coal reaction and coal itself to have is peeled off and is come.
Description
Technical field
The utility model relates to the measuring equipment that oxidation reaction in a kind of Low-temperature Oxidation of Coal generates moisture, belongs to oxidation of coal from the analysis of thermal characteristics and research field.
Background technology
Coal is one of the main energy sources and the raw material of industry of the world today, but coal in exploitation, store and face serious spontaneous combustion and threaten in application process.The low-temperature oxidation of coal is the immediate cause causing coal generation spontaneous combustion, and therefore, the low-temperature oxidation mechanism that research discloses coal realizes the safety of coal resources, the key of efficiency utilization.
The process that the low-temperature oxidation of coal is heat transfer in an extremely complicated porous medium, mass transfer and chemical reaction are coupled, mainly comprises four phenomenons: 1. oxygen is diffused into particle surface and the pore surface of coal; 2. coal and oxygen carry out chemical reaction; 3. the release of heat in course of reaction; 4. the generation of gas oxidation products.The low-temperature oxidation characteristic of coal can be analysed in depth by the gaseous product discharged in monitoring analysis oxidation of coal process.Gas oxidation products is mainly CO
2, CO and H
2o.Current correlative study both domestic and external is round CO mostly
2analyze with the generation of CO, very deficient to the supervision and analysis of the moisture that oxidation reaction in oxidation of coal process generates.Coal itself contains moisture, as brown coal moisture can reach 25-60%; The heat discharged in oxidation of coal process can make the moisture of coal itself evaporate, and mixes with the moisture that oxidation reaction generates, and this makes monitoring oxidation reaction being generated to moisture more complicated.In order to the low-temperature oxidation mechanism of system further investigation coal, how being peeled away by the moisture that the moisture of existence in coal itself and oxidation reaction generate, is then realize oxidation of coal water generation reaction to divide monitoring a major issue to be solved.
Utility model content: for above-mentioned the deficiencies in the prior art, the utility model provides a kind of device and method can measuring the biodiversity that oxidation of coal reaction generates in low temperature oxidization process in real time.
For achieving the above object, the technical solution adopted in the utility model is: in a kind of Low-temperature Oxidation of Coal, oxidation reaction generates the measurement mechanism of moisture, comprises two and surveys moisture balance, tracheae fixed band, resistance furnace and two quartz reactors.Two quartz reactors are placed in resistance furnace, and pass into air and nitrogen respectively bottom it, coal sample is placed in quartz reactor.Quartz reactor upper end is provided with gas conduit, and gas conduit is connected with the gas introduction tube surveying moisture balance.Gas conduit and gas introduction tube are fixed by tracheae fixed band.
Preferably, described survey moisture balance comprises electronic balance, conical flask, anhydrous calcium chloride drying agent, piston type sealing-plug, gas introduction tube and gas eduction tube.Conical flask is arranged on electronic balance.Be placed with anhydrous calcium chloride drying agent in conical flask, the bottleneck of conical flask is sealed by piston type sealing-plug.Gas introduction tube is inserted into the bottom of conical flask by piston type sealing-plug, and gas eduction tube is inserted into the upper end of anhydrous calcium chloride drying agent by piston type sealing-plug.
Preferably, described gas conduit is made up of high temperature resistant bend pipe and rubber hose, and high temperature resistant bend pipe is inserted in quartz reactor, and rubber hose is connected with gas introduction tube.
Preferably, the upper end of described quartz reactor is provided with piston type sealing-plug.
The beneficial effect that the utility model has is:
1), under low temperature, coal is oxidized in atmosphere and generates gaseous product and comprise moisture that coal itself contains and the moisture that oxidation of coal reaction generates; And coal heat in nitrogen in the gaseous product of generation only contain coal itself with moisture.The utility model is oxidized under air by Simultaneous Monitoring coal and heats the biodiversity of generation under a nitrogen, the moisture utilizing its difference oxidation of coal reaction to be generated and coal itself with moisture peel away;
2) the utility model directly generates the quality of moisture with electronics balance measurement, and by data acquisition system (DAS) record in a computer, data collection interval is short for the data of measurement, Real-Time Monitoring oxidation of coal for a long time can react the biodiversity generated;
3) apparatus structure of the utility model use is simple; In measurement mechanism, gas introduction tube adopts various material pipe fitting to be connected, and measures under both can having met hot environment, can avoid again because gas circuit connects the measurement system error produced; Conical flask sitting is on band cover electronic balance tray, and when can ensure to measure, conical flask steadily and do not affect by external environment flow perturbation; Electronic balance precision reaches 0.1mg, and range 220g meets in coal the requirement producing amount of moisture.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is that coal oxidation reaction in low temperature oxidization process generates the mass change figure of moisture.
Embodiment:
As shown in Figure 1: in a kind of Low-temperature Oxidation of Coal, oxidation reaction generates the measurement mechanism of moisture, comprise two and survey moisture balance 5, tracheae fixed band 13, resistance furnace 1 and two quartz reactors 2,3.Two quartz reactors 2,3 are placed in resistance furnace 1, pass into air 14 and nitrogen 15 bottom it respectively, and coal sample 4 is placed in quartz reactor 2,3.Quartz reactor 2,3 upper end is provided with gas conduit, and gas conduit is connected with the gas introduction tube 8 surveying moisture balance.Gas eduction tube and gas introduction tube 8 are fixed by tracheae fixed band 13.Described survey moisture balance comprises electronic balance 5, conical flask 11, anhydrous calcium chloride drying agent 10, piston type sealing-plug 9, gas introduction tube 8 and gas eduction tube 12.Conical flask 11 is arranged on electronic balance 5.Be placed with anhydrous calcium chloride drying agent 10 in conical flask 11, the bottleneck of conical flask 11 is sealed by piston type sealing-plug 9.Gas introduction tube 8 is inserted into the bottom of conical flask 11 by piston type sealing-plug 9, and gas eduction tube 12 is inserted into the upper end of anhydrous calcium chloride drying agent 10 by piston type sealing-plug 9.Described gas conduit is made up of high temperature resistant bend pipe 6 and rubber hose 7, and high temperature resistant bend pipe 6 is inserted in quartz reactor 2,3, and rubber hose 7 is connected with gas introduction tube 8.The upper end of described quartz reactor 2,3 is provided with piston type sealing-plug 9.
Embodiment 1
Utilize this device to carry out oxidation reaction in Low-temperature Oxidation of Coal and generate specifically being implemented as follows of moisture measurement:
The first step: two parts of equal in quality 90 ~ 100g anhydrous calcium chloride drying agent 10 are respectively charged in corresponding wide mouthed Erlenmeyer bottle 11; Wide mouthed Erlenmeyer bottle 11 seals with the piston type sealing-plug 9 with gas introduction tube plastic rigid pipe section 8 and gas eduction tube 12 respectively, gas introduction tube plastic rigid pipe section 8 be connected successively with rubber hose 7, high temperature resistant bend loss 6, wherein rubber hose 7 tracheae fixed band 13 is fixed on crucible type resistance furnace 1; The device for measuring moisture connected steadily is placed on electronic balance 5 stand-by for upper 10 hour.
Second step: be 0.335-0.45mm by particle diameter, moisture be 10% 12g brown coal coal sample 4 divide equally after put into quartz reactor 2,3, being connected with quartz reactor 2,3 by piston type sealing-plug 4 by high temperature resistant bend loss 6, is then that air 14 and the nitrogen 15 of 100mL/min passes in quartz reactor 2,3 respectively by airflow rate; Temperature in crucible type resistance furnace 1 is warmed up to 200 DEG C from 50 DEG C with the rate linear of 1 DEG C/min, and the coal sample in quartz reactor 2 is oxidized in atmosphere, and the coal sample in quartz reactor 3 heats in nitrogen; The gaseous product of two reactor outlets imports the bottom of wide mouthed Erlenmeyer bottle 11 through gas conduit, the moisture in gaseous product is absorbed by anhydrous calcium chloride drying agent 10, and remaining gas is discharged by gas eduction tube 12.
3rd step: utilize two electronic balance 5 synchronous real-time measurements and record the quality that two are equipped with anhydrous calcium chloride wide mouthed Erlenmeyer bottle 11, its difference is coal oxidation reaction in oxidizing process and generates the quality change rule of moisture, as shown in Figure 2.
Claims (6)
1. in Low-temperature Oxidation of Coal, oxidation reaction generates a measuring equipment for moisture, it is characterized in that: comprise two and survey moisture balance, tracheae fixed band, resistance furnace and two quartz reactors; Two quartz reactors are placed in resistance furnace, pass into air and nitrogen respectively bottom it, and coal sample is placed in quartz reactor; Quartz reactor upper end is provided with gas conduit, and gas conduit is connected with the gas introduction tube surveying moisture balance; Gas conduit and gas introduction tube are fixed by tracheae fixed band.
2. in a kind of Low-temperature Oxidation of Coal as claimed in claim 1, oxidation reaction generates the measuring equipment of moisture, it is characterized in that: described survey moisture balance comprises electronic balance, conical flask, anhydrous calcium chloride drying agent, piston type sealing-plug, gas introduction tube and gas eduction tube; Conical flask is arranged on electronic balance, anhydrous calcium chloride drying agent is placed with in conical flask, the bottleneck of conical flask is sealed by piston type sealing-plug, gas introduction tube is inserted into the bottom of conical flask by piston type sealing-plug, and gas eduction tube is inserted into the upper end of anhydrous calcium chloride drying agent by piston type sealing-plug.
3. in a kind of Low-temperature Oxidation of Coal as claimed in claim 1, oxidation reaction generates the measuring equipment of moisture, it is characterized in that: described gas conduit is made up of high temperature resistant bend pipe and rubber hose, high temperature resistant bend pipe is inserted in quartz reactor, and rubber hose is connected with gas introduction tube.
4. in a kind of Low-temperature Oxidation of Coal as claimed in claim 1, oxidation reaction generates the measuring equipment of moisture, it is characterized in that: the upper end of described quartz reactor is provided with piston type sealing-plug.
5. in a kind of Low-temperature Oxidation of Coal as claimed in claim 2, oxidation reaction generates the measuring equipment of moisture, it is characterized in that: described conical flask is wide mouthed Erlenmeyer bottle.
6. in a kind of Low-temperature Oxidation of Coal as claimed in claim 2, oxidation reaction generates the measuring equipment of moisture, and it is characterized in that: described electronic balance precision reaches 0.1mg, range is 220g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520713037.9U CN205157361U (en) | 2015-09-15 | 2015-09-15 | Oxidation reaction generates measuring equipment of moisture among coal low temperature oxidation process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520713037.9U CN205157361U (en) | 2015-09-15 | 2015-09-15 | Oxidation reaction generates measuring equipment of moisture among coal low temperature oxidation process |
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| Publication Number | Publication Date |
|---|---|
| CN205157361U true CN205157361U (en) | 2016-04-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520713037.9U Expired - Fee Related CN205157361U (en) | 2015-09-15 | 2015-09-15 | Oxidation reaction generates measuring equipment of moisture among coal low temperature oxidation process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181514A (en) * | 2015-09-15 | 2015-12-23 | 沈阳航空航天大学 | Measuring device and measuring method for water generated from oxidizing reaction during low-temperature oxidation process of coal |
| CN114324444A (en) * | 2021-12-03 | 2022-04-12 | 辽宁科技大学 | Device for determining high-temperature reaction of coke and water vapor |
-
2015
- 2015-09-15 CN CN201520713037.9U patent/CN205157361U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105181514A (en) * | 2015-09-15 | 2015-12-23 | 沈阳航空航天大学 | Measuring device and measuring method for water generated from oxidizing reaction during low-temperature oxidation process of coal |
| CN114324444A (en) * | 2021-12-03 | 2022-04-12 | 辽宁科技大学 | Device for determining high-temperature reaction of coke and water vapor |
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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 |
Granted publication date: 20160413 Termination date: 20160915 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |