CN203881674U - Observation device for coal pyrolysis action in fluidized bed furnace - Google Patents
Observation device for coal pyrolysis action in fluidized bed furnace Download PDFInfo
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- CN203881674U CN203881674U CN201420279023.6U CN201420279023U CN203881674U CN 203881674 U CN203881674 U CN 203881674U CN 201420279023 U CN201420279023 U CN 201420279023U CN 203881674 U CN203881674 U CN 203881674U
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- coal
- pyrolysis
- observation device
- sight chamber
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Abstract
The utility model discloses an observation device for coal pyrolysis action in a fluidized bed furnace. The observation device comprises a nitrogen gas tank, an electric heater and an observation chamber, wherein the observation chamber is made of transparent organic glass; a feed pipe is arranged on one side wall of the observation chamber, a smoke outlet pipe is arranged at the top of the observation chamber, the observation chamber is connected with an external induced draft fan through the smoke outlet pipe, an air distribution cabinet is arranged at the bottom of the observation chamber, an air distribution plate is arranged at the top of the air distribution cabinet, and a plurality of air inlet pipes are distributed on the air distribution plate; the outlet end of the nitrogen gas tank is connected with the inlet end of the electric heater through an air guide pipe, the outlet end of the electric heater is connected with the air distribution cabinet at the bottom of the observation chamber through an intake manifold, a first check valve is arranged on the air guide pipe, a second check valve is arranged on the intake manifold, and a flowmeter is further arranged on a pipeline between the electric heater and the second stop valve. The observation device is simple and compact in structure, safe, reliable, convenient to observe, wide in application rate, and capable of conveniently detecting the law non-linear dynamics of bubbles during pyrolysis of low-temperature coal.
Description
Technical field
The utility model belongs to pyrolysis of coal facilities for observation technical field, is specifically related to pyrolysis of coal behavior observation device in a kind of fluidized furnace.
Background technology
Pyrolysis of coal refers to series of physical that coal occurs when continuous heating is to higher temperature under inert atmosphere and the complex process of chemical change, pyrolysis of coal can be produced coal tar, coal gas and tar, thereby improve the utilization ratio of coal, also need effectively to remove the pollutant in coal simultaneously, could realize the clean and effective utilization of coal resources.The advantages such as low temperature pyrolysis of coal (0-700 DEG C) is many to be carried out in internal thermal upright carbonization furnace, has small investment, and production cost is low, and economic competitiveness is strong, are particularly useful for northern Shensi high volatile coal.Internal thermal upright carbonization furnace is made up of carbonization chamber, qi-emitting hole, firing chamber, coke discharging mouth etc., carbonization chamber is divided into preheating section, retort section and cooling section from top to bottom, in retort section, firing chamber is set outward, coal gas and air generate high-temp waste gas in burning Indoor Combustion, high-temperature gas enters carbonization chamber through the qi-emitting hole of firing chamber and carbonization chamber retort section division wall, add the lump coal of carbonization chamber to move from top to bottom, with high-temperature gas counter current contacting.Therefore, in actual production, low temperature pyrolysis of coal completes in high temperature convective flow atmosphere.
Because high-temperature flue gas passed coal seam from bottom to top, require coal seam to have enough gas penetration potentiaies, and air-flow is evenly distributed, be convenient to carrying out smoothly of low temperature pyrolysis of coal chemical reaction.If green coke, will appear in gas permeability of coal seam variation, even furnace chamber inside builds the pressure, coal gas leaks, the consequences such as production declining.Therefore, be necessary to study the Chemical Kinetics characteristic of low temperature pyrolysis of coal under convective flow atmosphere, for low temperature pyrolytic process of coal provides useful reference.
Along with the increase of convection current flow velocity, the diameter of bubble, shape and movement locus change thereupon, coal grain also can with bubble grow up, rise, break and strenuous exercise and strongly mix with convective flow atmosphere.If bubble is too little, very little, coal grain will be affected with fully mixing of convective flow atmosphere; If bubble is too large, a large amount of bubbles has little time and the transmission of coal dust particle generation caloic, just from coal dust particle, gushes out, and will be unfavorable for the pyrolysis of coal.Therefore, the pyrolysis important of the differentiation of the Nonlinear dynamic behaviors of bubble to coal dust particle.Therefore, be necessary to design a kind of device of observing low temperature pyrolysis of coal bubble Nonlinear dynamic behaviors in fluidized furnace.
Utility model content
The purpose of this utility model is to provide a kind of device of observing pyrolysis of coal behavior in fluidized furnace, and this device can effectively be observed the bubble Nonlinear dynamic behaviors in pyrolysis of coal process in fluidized furnace, thereby the convection current flow velocity of fluidized furnace is carried out to Effective Regulation.
The utility model is to be achieved through the following technical solutions:
Pyrolysis of coal behavior observation device in a kind of fluidized furnace, comprises nitrogen box, electric heater and sight chamber, and sight chamber is made up of transparent organic glass; On a sidewall of sight chamber, be provided with feed pipe, the top of sight chamber is provided with out fume pipe, and sight chamber is connected with external induced draft fan by going out fume pipe; The bottom of sight chamber is provided with air chest, and the top of air chest is provided with air distribution plate, and some blast pipes distribute on air distribution plate;
The endpiece of nitrogen box is connected with the entrance point of electric heater by wireway, the endpiece of electric heater is connected with the air chest of sight chamber bottom by inlet manifold, on wireway, be provided with the first stop valve, on inlet manifold, be provided with the second stop valve, on the pipeline between electric heater and the second stop valve, be also provided with flowmeter.
The bottom of air chest is provided with some gas-distribution pipes, and some gas-distribution pipes are all connected with inlet manifold, is also provided with distributing valve on gas-distribution pipe.
On the sight chamber sidewall relative with feed pipe, be provided with some run-down pipes, run-down pipe is provided with surplus valve.
The distribution height difference of some run-down pipes on sight chamber sidewall.
Go out and on fume pipe, be also provided with air-flow stop valve.
On sight chamber sidewall below feed pipe, thermometer and tensimeter are also installed.
On described some blast pipes, blast cap is installed.
The bottom of sight chamber is also provided with discharge nozzle, and discharge nozzle is provided with outlet valve.
Feed pipe is provided with inlet valve.
Nitrogen box is provided with draft tube, and draft tube is provided with gas admittance valve.
Compared with prior art, the utlity model has following useful technique effect:
Observation device of the present utility model, comprise nitrogen box, electric heater and sight chamber, be provided with the air chest of air distribution plate in sight chamber bottom, sight chamber sidewall is provided with the feed pipe of coal to be observed, coal is entered in sight chamber and is dropped on air distribution plate by feed pipe, sight chamber top is also provided with out fume pipe, sight chamber is connected with external induced draft fan by going out fume pipe, heated nitrogen stream blast pipe on being arranged on air distribution plate in air chest flows in sight chamber, by the twitch of induced draft fan, nitrogen in sight chamber is flowed from bottom to top, the coal grain on air distribution plate is blown to obtain rolling up and down by nitrogen stream, form fluidization.Nitrogen flows on the pipeline of seeing air chest and is also provided with stop valve and flowmeter, when adjustable cut-off valve aperture, by observing the registration of flowmeter, the bubble Nonlinear dynamic behaviors just can observe different in flow rate time.Due to sight chamber poly (methyl methacrylate) plate material, size, the growth of bubble, merge and break can adopt high-speed camera take obtain.The utility model is simple and compact for structure, safe and reliable, is convenient to observation, applied widely, the bubble nonlinear kinetics rule of low temperature pyrolysis of coal can be detected easily, thereby provides reference for the setting of pyrolysis of coal design of Fluidized bed air-flow velocity in service.
Further, in the bottom of air chest, some gas-distribution pipes are set, these gas-distribution pipes are all connected with inlet manifold, nitrogen can be sent in air chest uniformly, make nitrogen flow even, stable, the mild sight chamber of sending into.
Further, on the sight chamber sidewall relative with feed pipe place sidewall, be also provided with some run-down pipes, the distribution height difference of run-down pipe on sight chamber sidewall, can select to open the surplus valve of differing heights, collect the coal grain flowing out from differing heights run-down pipe, and measure weight, obtain the fluid height of Different Weight coal grain in sight chamber, control the residence time of coal grain in fluidized furnace by the height of controlling water kick pipe, can effectively instruct actual production.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
Wherein: 1 is nitrogen box; 2 is wireway; 3 is the first stop valve; 4 is electric heater; 5 is inlet manifold; 6 is flowmeter; 7 is distributing valve; 8 is gas-distribution pipe; 9 is air chest; 10 is air distribution plate; 11 is run-down pipe; 12 is surplus valve; 13 is sight chamber; 14 for going out fume pipe; 15 is air-flow stop valve; 16 is induced draft fan; 17 feed pipes; 18 is inlet valve; 19 is thermometer; 20 is tensimeter; 21 is discharge nozzle; 22 is outlet valve; 23 is blast pipe; 24 is blast cap; 25 is draft tube; 26 is gas admittance valve; 27 is the second stop valve.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
Referring to Fig. 1, the utility model comprises nitrogen box 1, electric heater 1 and sight chamber 13, and sight chamber 13 is made up of transparent organic glass; On a sidewall of sight chamber 13, be provided with feed pipe 17, thermometer 19 and tensimeter 20, feed pipe 17 is provided with inlet valve 18; On another sidewall of sight chamber 13, be provided with some run-down pipes 11, surplus valve 12 is installed on run-down pipe 11, and the distribution height difference of these run-down pipes 11 on sight chamber 13 sidewalls, the top of sight chamber 13 is provided with out fume pipe 14, go out fume pipe 14 and be provided with air-flow stop valve 15, sight chamber 13 is connected with external induced draft fan 16 by going out fume pipe 14, the bottom of sight chamber 13 is provided with air chest 9, the top of air chest 9 is provided with air distribution plate 10, some blast pipes 23 that distribute on air distribution plate 10, are also provided with blast cap 24 on blast pipe 23; The endpiece of nitrogen box 1 is connected with the entrance point of electric heater 4 by wireway 2, the endpiece of electric heater 4 is connected with the air chest 9 of sight chamber 13 bottoms by inlet manifold 5, on wireway 2, be provided with the first stop valve 3, on inlet manifold 5, be provided with the second stop valve 27, on the pipeline between electric heater 4 and the second stop valve 27, be also provided with flowmeter 6.The bottom of air chest 9 is provided with some gas-distribution pipes 8, and some gas-distribution pipes 8 are all connected with inlet manifold 5, is also provided with distributing valve 7 on gas-distribution pipe 9.
The bottom of sight chamber 13 is also provided with discharge nozzle 21, and discharge nozzle 21 is provided with outlet valve 22, and nitrogen box 1 is provided with draft tube 25, and draft tube 25 is provided with gas admittance valve 26.
Pyrolysis of coal behavior observation device in a kind of fluidized furnace of the present utility model, in use:
Close the second stop valve 27, open the first stop valve 3, the nitrogen in nitrogen box 1 flows into electric heater 4, is heated to 200 DEG C of left and right.Open inlet valve 18, the coal of certain particle diameter is poured in sight chamber 13 from feed pipe 17, drop on air distribution plate 10, close inlet valve 18.Open induced draft fan 16, air-flow stop valve 11, the second stop valve 27 and distributing valve 7, nitrogen flow in electric heater 4 from nitrogen box, is heated to 200 DEG C of left and right, the nitrogen of heating flows into gas-distribution pipe 8 from electric heater 4 through inlet manifold 5, enters into air chest 9.Blast pipe 23 after the nitrogen stream of heating evenly mixes in air chest 9 from air distribution plate 10 flow in sight chamber 13.The rolling up and down that the nitrogen of producing by boasting from the blast pipe 23 of air distribution plate 10 blows the coal grain on air distribution plate 10, forms fluidization.By regulating the aperture of the first stop valve 3, and observe the registration of flowmeter 6, the bubble Nonlinear dynamic behaviors while can observe different in flow rate.Because sight chamber is poly (methyl methacrylate) plate material, size, the growth of bubble, merge and break can adopt high-speed camera take obtain.Simultaneously, also can select to open the surplus valve 12 of differing heights, collect the coal grain flowing out from differing heights run-down pipe 11, and measure weight, obtain the fluid height of Different Weight coal grain in stove, thereby control the residence time of coal grain in stove by controlling water kick open height.Temperature and pressure in sight chamber 13 is measured with the thermometer 19 on it and tensimeter 20, and the coal grain that inside installs additional can be opened outlet valve 22, from discharge nozzle 21, takes out.After nitrogen is finished, can open the gas admittance valve 26 on it, add from draft tube 25.
Claims (10)
1. a pyrolysis of coal behavior observation device in fluidized furnace, is characterized in that, comprise nitrogen box (1), electric heater (4) and sight chamber (13), sight chamber (13) is made up of transparent organic glass; On a sidewall of sight chamber (13), be provided with feed pipe (17), the top of sight chamber (13) is provided with out fume pipe (14), and sight chamber (13) is connected with external induced draft fan (16) by going out fume pipe (14); The bottom of sight chamber (13) is provided with air chest (9), and the top of air chest (9) is provided with air distribution plate (10), the upper some blast pipes (23) that distribute of air distribution plate (10);
The endpiece of nitrogen box (1) is connected with the entrance point of electric heater (4) by wireway (2), the endpiece of electric heater (4) is connected with the air chest (9) of sight chamber (13) bottom by inlet manifold (5), on wireway (2), be provided with the first stop valve (3), on inlet manifold (5), be provided with the second stop valve (27), on the pipeline between electric heater (4) and the second stop valve (27), be also provided with flowmeter (6).
2. pyrolysis of coal behavior observation device in a kind of fluidized furnace according to claim 1, it is characterized in that, the bottom of air chest (9) is provided with some gas-distribution pipes (8), some gas-distribution pipes (8) all and inlet manifold (5) be connected, on gas-distribution pipe (8), be also provided with distributing valve (7).
3. pyrolysis of coal behavior observation device in a kind of fluidized furnace according to claim 1, it is characterized in that, on sight chamber (13) sidewall relative with feed pipe (17), be provided with some run-down pipes (11), run-down pipe (11) is provided with surplus valve (12).
4. pyrolysis of coal behavior observation device in a kind of fluidized furnace according to claim 3, is characterized in that the distribution height difference of some run-down pipes (11) on sight chamber (13) sidewall.
5. according to pyrolysis of coal behavior observation device in a kind of fluidized furnace described in any one in claim 1～4, it is characterized in that, go out and on fume pipe (14), be also provided with air-flow stop valve (15).
6. according to pyrolysis of coal behavior observation device in a kind of fluidized furnace described in any one in claim 1～4, it is characterized in that, on sight chamber (13) sidewall of feed pipe (17) below, thermometer (19) and tensimeter (20) are also installed.
7. according to pyrolysis of coal behavior observation device in a kind of fluidized furnace described in any one in claim 1～4, it is characterized in that, blast cap (24) is installed on described some blast pipes (23).
8. according to pyrolysis of coal behavior observation device in a kind of fluidized furnace described in any one in claim 1～4, it is characterized in that, the bottom of sight chamber (13) is also provided with discharge nozzle (21), and discharge nozzle (21) is provided with outlet valve (22).
9. according to pyrolysis of coal behavior observation device in a kind of fluidized furnace described in any one in claim 1～4, it is characterized in that, feed pipe (17) is provided with inlet valve (18).
10. according to pyrolysis of coal behavior observation device in a kind of fluidized furnace described in any one in claim 1～4, it is characterized in that, nitrogen box (1) is provided with draft tube (25), and draft tube (25) is provided with gas admittance valve (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279023.6U CN203881674U (en) | 2014-05-28 | 2014-05-28 | Observation device for coal pyrolysis action in fluidized bed furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420279023.6U CN203881674U (en) | 2014-05-28 | 2014-05-28 | Observation device for coal pyrolysis action in fluidized bed furnace |
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| Publication Number | Publication Date |
|---|---|
| CN203881674U true CN203881674U (en) | 2014-10-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420279023.6U Expired - Fee Related CN203881674U (en) | 2014-05-28 | 2014-05-28 | Observation device for coal pyrolysis action in fluidized bed furnace |
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| CN (1) | CN203881674U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842386A (en) * | 2016-05-31 | 2016-08-10 | 扬州大学 | Two-section separate testing system for eliminating emission of pollutants for coal burning |
-
2014
- 2014-05-28 CN CN201420279023.6U patent/CN203881674U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105842386A (en) * | 2016-05-31 | 2016-08-10 | 扬州大学 | Two-section separate testing system for eliminating emission of pollutants for coal burning |
| CN105842386B (en) * | 2016-05-31 | 2018-03-27 | 扬州大学 | Eliminate the two-phase seperation formula pilot system of coal contaminants discharge |
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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: 20141015 Termination date: 20150528 |
|
| EXPY | Termination of patent right or utility model |