CN105062523A - Pulverized coal upgrading pyrolysis device and upgrading pyrolysis process - Google Patents
Pulverized coal upgrading pyrolysis device and upgrading pyrolysis process Download PDFInfo
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Abstract
The invention relates to the field of coal chemical industry, in particular to the field of energy utilization. The invention provides a pulverized coal upgrading pyrolysis device and a process using the device. The device comprises a coal drop port, an upgrading furnace body, a gas outlet pipeline and a gas outlet. The device is characterized in that the upgrading furnace body is internally provided with toothed driving wheels and a toothed steel strip, and the toothed steel strip is a heating medium. Pulverized coal enters the upgrading furnace body through the coal drop port, drops onto the hot toothed steel strip, and is sent to the other end of the upgrading furnace body along with the movement of the toothed steel strip, thus realizing the upgrading pyrolysis reaction of pulverized coal. The device and the process provided by the invention can solve the technical problems of low utilization efficiency, easy combustion and serious loss in a pulverized coal upgrading process.
Description
Technical field
The present invention relates to coal chemical technology, particularly relates to field of energy utilization, is specifically related to a kind of fine coal device for improving quality and technique.
Background technology
Going from bad to worse in recent years along with the northern area of China atmospheric environment, how efficient and rationally utilize coal resources, avoid coal directly to burn using more and more obtaining the attention of domestic scholars, and to produce high value added product by the method for improving quality of coal by pyrolysis be effective way that is clean, that utilize coal resources efficiently.The domestic equipment for improving quality of coal by pyrolysis mainly contains vertical retort and stationary heat carrier dry distillation of coal fluidized-bed etc. at present, vertical retort uses largest, equipment is simple, it is less to invest, but also there is many shortcomings, namely can only use lump coal, the caloric power of gas of generation is low, and can not use as industrial chemicals, and stationary heat carrier dry distillation of coal fluidized-bed is still not mature enough technically, cannot large-scale promotion.Also have a lot of mechanism and scholar's research to adopt rotary furnace equipment to carry out improving quality of coal by pyrolysis, this equipment have that investment is low, oil yield rate and factor of created gase is high, can process the advantages such as fine coal, therefore there is good prospect, obtain increasing attention.
Coal process for upgrading mainly comprises distillation process and drying process, for fine coal upgrading technology, mainly adopt fluidized-bed process, vibrating bed technique, solid thermal carriers technique at present, but above-mentioned technology only can process the fine coal of more than granularity 1mm usually, some even requires the particle that particle diameter is larger, and for the less fine coal of particle diameter, due to generation, the burning of dust in treating processes, make to submit the defects such as efficiency is low, equipment loss is serious to.In grading process, the thermal barrier adopted is respectively heat smoke, high-temperature semi-coke, pate dure ball or high temperature coal ash.
Can carry a large amount of dust in gaseous heat-carrier, raw gas, and calorific value is lower; For solid thermal carriers, carrier thermal conductivity is poor, and heat exchange rate is slow, efficiency is low, and thermal barrier needs fully to mix with feed coal, otherwise quality product is difficult to stable, thus causes service rating to increase.For low-rank coal (as brown coal), because its intensity is poor, breakage rate can be increased, cause serious loss being uniformly mixed in process.
CN203976719U discloses a kind of internal heat type fine coal destructive distillation rotary kiln, and this body of heater internal fixtion is provided with thermal barrier, can store heat after this thermal barrier is heated, and in body of heater turning course, fine coal flows through and realized fine coal destructive distillation by the thermal barrier heated.
CN201358172Y discloses a kind of microwave heating type cracking furnace of improvement, microwave heating is adopted to realize the cracking of gac, be specially, pyrolysis oven indoor are provided with the microwave radiation wall for heated material, the microwave radiation wall energy and control port pass from slipper seal cover plate, be arranged on pyrolysis oven external, supporting with microwave radiation wall microwave generator is connected.
CN102803851A discloses a kind of for operate continuously pyrolysis reactor, material in supplying duct is wherein fed into slope in conduit by the first screw-conveyor and to further second screw-conveyor of at least one in feed conduit, feed conduit is connected to supplying duct, wherein the driven speed of the second forwarder is lower than the driven speed of the first forwarder, and the top, hot-zone of reactor is provided with heating unit, as the thermal source of pyrolytic reaction, travelling belt carries by pyrolytic material through overheated zone, about 3 minutes are in the chamber kept by the fragment of pyrolysis, its middle chamber keeps the substantially constant temperature of about 550 degrees Celsius to realize pyrolytic reaction in hot-zone 13.
But the technical problem that above-mentioned prior art still cannot solve that utilising efficiency in pulverized coal pyrolysis process is low, easy firing, loss are serious.
Summary of the invention
The present invention is just for above-mentioned the deficiencies in the prior art, a kind of pulverized coal pyrolysis upgrading furnace and technique are provided, effectively can improve the utilising efficiency of fine coal, overcome in prior art particle diameter is less than that utilising efficiency in the fine coal grading process of 1mm is low, technical problem that easy firing, loss are serious.
For solving the problems of the technologies described above, the invention provides a kind of pulverized coal pyrolysis upgrading furnace, comprise coal dropping port (1), upgrading body of heater (2), outlet gas line (3), pneumatic outlet (4), it is characterized in that, described upgrading body of heater (2) inside is provided with band tooth driving wheel (5), band tooth steel band (6), and described band tooth steel band (6) is heating medium;
Described fine coal enters in described upgrading body of heater (2) by coal dropping port (1), fall on hot described band tooth steel band (6), and be sent to the other end of described upgrading body of heater (2) along with the movement of described band tooth steel band (6), realize the upgrading pyrolytic reaction of fine coal.
Preferably, described upgrading body of heater (2) inside arranges interchanger (9), realizes the heating to described band tooth steel band (6), and described interchanger (9) is arranged on the bottom of described band tooth steel band (6).
Preferably, described interchanger (9) is provided with smoke inlet pipeline (10) and exhanst gas outlet pipeline (8).
Preferably, the hot stove of described upgrading is set to multiple series connection and uses, fine coal through last upgrading pyrolysis oven is discharged from the feed opening (7) of described last upgrading pyrolysis oven, the coal dropping port of a upgrading pyrolysis oven after entering into, after described the coal dropping port of a upgrading pyrolysis oven fall into described after a upgrading pyrolysis oven inside hot band tooth steel band on complete pyrolytic process, discharge, until last carries hot pyrolysis oven from the coal dropping port of a described rear upgrading pyrolysis oven again.
Preferably, inner same described upgrading body of heater (2), described band tooth steel band (6), described interchanger (9) are set to organize series connection more, last group of band tooth steel band setting position is higher than rear one group of band tooth steel band, there is one section of overlapping region in the end of last group of band tooth steel band and the front end of rear one group of band tooth steel band, the fine coal that last group of band tooth steel band is moved can drop on next group band tooth steel band, successively forward, until the feed opening through this upgrading body of heater discharges described upgrading body of heater (2).
Preferably, described band tooth steel band (6), can realize all being engaged with band tooth driving wheel (5) at different temperatures.
Preferably, the fine coal through pyrolysis of discharging from described feed opening (7) falls cold burnt device (17).
Preferably, the thermal source of described interchanger (9) is from the purified gas burning produced in grading process; Or, from the combustion heat wind furnace set up separately; Or, the heat that other material that burns produces.
Preferably, it is inner that raw material fine coal enters upgrading body of heater (2) through coal dropping port (1), fall on band tooth steel band (6), movement along with hot band tooth steel band (6) is sent to the other end of described upgrading body of heater (2), realizes the upgrading pyrolytic reaction of fine coal.
The present invention also provides a kind of improving quality of coal by pyrolysis technique utilizing the aforesaid pyrolysis upgrading furnace of the present invention further, it is characterized in that, it is inner that raw material fine coal enters upgrading body of heater (2) through coal dropping port (1), fall on band tooth steel band (6), movement along with hot band tooth steel band (6) is sent to the other end of described upgrading body of heater (2), realizes the upgrading pyrolytic reaction of fine coal.
Preferably, described upgrading body of heater (2) inside arranges interchanger (9), realizes the heating to described band tooth steel band (6), and described interchanger (9) is arranged on the bottom of described band tooth steel band (6);
Described interchanger (9) is provided with smoke inlet pipeline (10) and exhanst gas outlet pipeline (8);
The described high-temperature flue gas from hotblast stove (14) enters into interchanger (9) from smoke inlet pipeline (10) after suitable temperature adjusted to by thermosistor (15), heat exchange is completed with band tooth steel band (6), the temperature being suitable for pyrolysis upgrading reaction will be heated to tooth steel band (6), the flue gas completing heat exchange transmits through induced draft fan (16) through exhanst gas outlet pipeline (8) again, through the first valve (18) directly emptying or be recycled to through the second valve (19) and be transported to interchanger (9) after thermosistor (15) reheats again and complete and recycle, fine coal through the process of pyrolysis grading process drops to feed opening (7) from the end of band tooth steel band, discharges, realize cooling through cold burnt device (17) through feed opening (7) from upgrading body of heater (2).
Preferably, fine coal is through after achieving pyrolysis upgrading reaction in upgrading body of heater (2), produce coal gas of high temperature to discharge from pneumatic outlet (4) through outlet gas line (3), successively through fly-ash separator (11), water cooler (12), press (13), hotblast stove (14) is entered after pressurized, heat exchange interchanger (9) is entered from smoke inlet pipeline (10) after thermosistor (15), discharge from exhanst gas outlet pipeline (8) again, the first valve (18) emptying is delivered to via induced draft fan (16), or be circulated to through the second valve (19) recycle and reuse that thermosistor (15) realizes thermal source.
Preferably, inner same described upgrading body of heater (2), described band tooth steel band (6), described interchanger (9) are set to organize series connection more, last group of band tooth steel band setting position is higher than rear one group of band tooth steel band, there is one section of overlapping region in the end of last group of band tooth steel band and the front end of rear one group of band tooth steel band, the fine coal that last group of band tooth steel band is moved can drop on next group band tooth steel band, successively forward, until the feed opening through this upgrading body of heater discharges described upgrading body of heater (2);
Each interchanger has independently smoke inlet pipeline and exhanst gas outlet pipeline, each smoke inlet pipeline is connected to thermosistor (15), each exhanst gas outlet pipeline is connected to the first valve (18) emptying, or is circulated to thermosistor (15) through the second valve (19) and realizes recycle.
Preferably, inner same described upgrading body of heater (2), described band tooth steel band (6), described interchanger (9) are set to organize series connection more, last group of band tooth steel band setting position is higher than rear one group of band tooth steel band, there is one section of overlapping region in the end of last group of band tooth steel band and the front end of rear one group of band tooth steel band, the fine coal that last group of band tooth steel band is moved can drop on next group band tooth steel band, successively forward, until the feed opening through this upgrading body of heater discharges described upgrading body of heater (2);
Heat source gas passes into the smoke inlet pipeline of First Heat Exchanger from thermosistor (15), again from the exhanst gas outlet pipeline of this First Heat Exchanger and then the smoke inlet pipeline entering into the second interchanger, the exhanst gas outlet pipeline of an interchanger is made to connect with the smoke inlet pipeline of next interchanger in this way, to the last to be finally connected to the first valve (18) emptying for the exhanst gas outlet pipeline of an interchanger, or be circulated to thermosistor (15) by the second valve (19) and realize recycle.
Preferably, described upgrading pyrolysis oven is set to multiple series connection and uses, fine coal through last upgrading pyrolysis oven is discharged from the feed opening (7) of described last upgrading pyrolysis oven, the coal dropping port of a upgrading pyrolysis oven after entering into, after described the coal dropping port of a upgrading pyrolysis oven fall into described after a upgrading pyrolysis oven inside hot band tooth steel band on complete pyrolytic process, discharge, until last carries hot pyrolysis oven from the coal dropping port of a described rear upgrading pyrolysis oven again;
From thermosistor (15) heat source gas out by mode in parallel for the interchanger of each upgrading pyrolysis oven provides heat, or by the mode of connecting for the interchanger of each upgrading pyrolysis oven provides heat;
Pool together by induced draft fan (16) through the first valve (18) emptying from the exhanst gas outlet pipeline expellant gas of the interchanger of each upgrading pyrolysis oven, or be circulated to thermosistor (15) realize recycle by the second valve (19).
Beneficial effect of the present invention:
(1) pyrolysis upgrading furnace of the present invention adopts band tooth steel band as heating medium, first steel band obtains heat, after raised temperature, fine coal is heated, carry out again after completing heat exchange reheating to realize carrying out continuously of upgrading reaction, utilize band tooth steel band can ensure that fine coal realizes sufficient heat exchange in transmitting procedure as heating medium, improve the upgrading efficiency of fine coal, and because flue gas is by heat exchange heating zone tooth steel band, there are not the corrosion to equipment and wearing and tearing;
(2) pyrolysis upgrading furnace of the present invention adopts the type of heating of external-heat, fine coal can be avoided directly to contact with air, make in pyrolysis upgrading reaction process, reduce or avoid the generation of dust, and then the pulverized coal friring of small particle size can not be made, thus reduce fragmentation, the loss of fine coal raw material to greatest extent, improve the security of system cloud gray model, improve the efficiency of pulverized coal pyrolysis upgrading, and owing to have employed the type of heating of external-heat, in reaction process, there is not the reaction of air and carbon, reduce carbon loss to greatest extent, improve system cloud gray model security;
(3) pyrolysis upgrading furnace of the present invention is to be with tooth steel band as thermal barrier, owing to itself being the transport agent of fine coal raw material equally, and directly can contact with fine coal raw material, therefore, its heat transfer rate is fast, heat exchange efficiency is high, and whole equipment runs in enclosed space, and thermosteresis is little;
(4) pyrolysis upgrading furnace of the present invention can also by recycling the coal gas of high temperature that fine coal upgrading produces, as the high-temperature flue gas of heating zone tooth steel band, namely ensure that and do not cause burn into wear and tear to steel band, effective utilization of resource can be realized again, there is the important meaning of environmental protection.
(5) pyrolysis upgrading furnace of the present invention possesses modular construction, extended capability is strong, both can increase steel band quantity or increased the length of steel band in same upgrading furnace, also can the series operation of multiple stage upgrading furnace, to raw coal particle strong adaptability, particle is less, upgrading effect is better.
(6) the band tooth driving wheel in pyrolysis upgrading furnace of the present invention is arranged on interchanger outside, and convenient cooling, improves work-ing life.
(7) pyrolysis upgrading furnace of the present invention is owing to being provided with temperature controlling unit, makes its temperature of reaction adjustable, can meet different reaction requirements, both can carry out drying or destructive distillation separately, also can carry out drying and retorting operation simultaneously.
(8) pyrolysis upgrading furnace of the present invention can be connected use, band tooth steel band wherein and interchanger mating portions also can use at pyrolysis upgrading furnace internal series-connection, and the mode of series connection or parallel connection can be adopted for the heat supply of multi-group heat exchanger, this can realize effective utilization of heat, also coal can be made to realize pyrolysis grading process more fully, improve utilising efficiency.
Accompanying drawing explanation
Fig. 1 is a kind of embodiment of pyrolysis upgrading furnace of the present invention, and it adopts high-temperature flue gas to be that band tooth steel band heats;
Fig. 2 is the another kind of embodiment of pyrolysis upgrading furnace of the present invention, and its coal gas of high temperature adopting pyrolysis upgrading furnace to reclaim heats for being with tooth steel band;
Fig. 3-4 is the embodiment used in multiple band tooth steel band series connection at a pyrolysis upgrading body of heater internal memory;
Fig. 5 is the embodiment that the series connection of multiple pyrolysis upgrading furnace uses.
Reference numeral implication is: 1-coal dropping port; 2-upgrading body of heater; 3-outlet gas line; 4-gas outlet; 5-is with tooth driving wheel; 6-is with tooth steel band; 7-feed opening; 8-exhanst gas outlet pipeline; 9-interchanger; 10-smoke inlet pipeline; 11-fly-ash separator; 12-water cooler; 13-press; 14-hotblast stove; 15-thermosistor; 16-induced draft fan; The cold burnt device of 17-; 18-valve.
Embodiment
As shown in Figure 1, pyrolysis upgrading Reaktionsofen of the present invention comprises coal dropping port 1, upgrading body of heater 2, outlet gas line 3, pneumatic outlet 4, band tooth driving wheel 5, band tooth driving wheel 6.Coal dropping port 1 is arranged on the upper front end of upgrading body of heater 2, and it is inner that raw material fine coal enters upgrading body of heater 2 through coal dropping port 1, falls on band tooth steel band 6, and band tooth steel band 6 carries fine coal and slowly advances under the driving of band tooth driving wheel 5; Upgrading body of heater 2 inside is also provided with interchanger 9, is arranged on the bottom of band tooth steel band 6, mid-way, is used for realizing the heating to band tooth steel band 6; Described interchanger 9 comprises smoke inlet pipeline 10 and exhanst gas outlet pipeline 8, to adjust to after suitable temperature through thermosistor 15 from the high-temperature flue gas of hotblast stove 14 and enter into interchanger 9 from smoke inlet pipeline 10, heat exchange is completed with band tooth steel band 6, band tooth steel band 6 is heated to the temperature being suitable for pyrolysis upgrading reaction, the flue gas completing heat exchange transmits through induced draft fan 16 through exhanst gas outlet pipeline 8 again, through the directly emptying or be recycled to through the second valve 19 and be transported to interchanger 9 after thermosistor reheats again and complete and recycle of the first valve 18.Fine coal through the process of pyrolysis grading process drops to feed opening 7 from the end of band tooth steel band, discharges, realize cooling through cold burnt device 17 through feed opening 7 from upgrading body of heater 2.Like this be arranged so that fine coal is in pyrolysis upgrading reaction process, can not produce dust much more especially, and directly contact with fine coal due to band tooth steel band 6, its heat exchange efficiency is higher, pyrolysis upgrading reacts more abundant.
As shown in Figure 2, fine coal is through after achieving pyrolysis upgrading reaction in upgrading body of heater 2, produce coal gas of high temperature to discharge from pneumatic outlet 4 through outlet gas line 3, successively through fly-ash separator 11, water cooler 12, press 13, after entering hotblast stove 14 after pressurized, be recovered recycle as the thermal source of interchanger 9.The coal gas of high temperature that such setting makes upgrading furnace interior produce, as the thermal source of interchanger 9, realizes the recycling of the energy, has both eliminated finishing apparatus and the technique of coal gas of high temperature, can save again the thermal source cost of interchanger.
As shown in Figure 3-4, upgrading body of heater 2 internal series-connection is provided with multiple band tooth steel band 6, and interchanger 9 is separately positioned on bottom, the mid-way of corresponding band tooth steel band 6, to realize the heating to band tooth steel band 6.The end and rear one of last band tooth steel band is with the front end of tooth steel band to there is partly overlapping, the position that last band tooth steel band is arranged is higher than the position of a rear band tooth steel band, this makes fine coal can move to the end of upgrading body of heater 2 successively from first group of band tooth steel band, until after last group band tooth steel band, discharge upgrading body of heater 2 through feed opening 7, then fall into cold burnt device 17 and complete cooling.Operation like this can make fine coal realize sufficient pyrolysis upgrading reaction in upgrading body of heater 2 inside, makes to diffuse the thermosteresis that flue gas takes away and decreases 18%.Pulverized coal pyrolysis upgrading can be made to react carry out more abundant is so set, realizes making full use of of raw material fine coal, improve pyrolysis upgrading efficiency.
As shown in Figure 5, for the embodiment that multiple pyrolysis upgrading furnace series connection of the present invention uses, the coal dropping port 1 of the corresponding rear upgrading body of heater of feed opening 7 of last upgrading body of heater, make from last upgrading body of heater processed after fine coal fall into after a upgrading body of heater proceed pyrolysis upgrading reaction, until after last group upgrading body of heater, be expelled to cold burnt device 17 from the feed opening of last group upgrading body of heater and complete cooling.Pulverized coal pyrolysis upgrading can be made to react carry out more abundant is so set, realizes making full use of of raw material fine coal, improve pyrolysis upgrading efficiency.
Obviously, above-described embodiment is only for clearly example being described, and the restriction not to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here exhaustive without the need to also giving all embodiments.And thus the apparent change of extending out or variation be still among the protection domain of the invention.
Claims (14)
1. a fine coal upgrading pyrolysis oven, comprise coal dropping port (1), upgrading body of heater (2), outlet gas line (3), pneumatic outlet (4), it is characterized in that, described upgrading body of heater (2) inside is provided with band tooth driving wheel (5), band tooth steel band (6), and described band tooth steel band (6) is heating medium;
Described fine coal enters in described upgrading body of heater (2) by coal dropping port (1), fall on hot described band tooth steel band (6), and be sent to the other end of described upgrading body of heater (2) along with the movement of described band tooth steel band (6), realize the upgrading pyrolytic reaction of fine coal.
2. fine coal upgrading pyrolysis oven according to claim 1, it is characterized in that, described upgrading body of heater (2) inside arranges interchanger (9), realizes the heating to described band tooth steel band (6), and described interchanger (9) is arranged on the bottom of described band tooth steel band (6).
3. fine coal upgrading pyrolysis oven according to claim 1 and 2, is characterized in that, described interchanger (9) is provided with smoke inlet pipeline (10) and exhanst gas outlet pipeline (8).
4. the hot stove of fine coal upgrading according to any one of claim 1-3, it is characterized in that, described upgrading pyrolysis oven is set to multiple series connection and uses, fine coal through last upgrading pyrolysis oven is discharged from the feed opening (7) of described last upgrading pyrolysis oven, the coal dropping port of a upgrading pyrolysis oven after entering into, after described the coal dropping port of a upgrading pyrolysis oven fall into described after a upgrading pyrolysis oven inside hot band tooth steel band on complete pyrolytic process, discharge, until last carries hot pyrolysis oven from the coal dropping port of a described rear upgrading pyrolysis oven again.
5. the fine coal upgrading pyrolysis oven according to any one of claim 1-4, it is characterized in that, inner same described upgrading body of heater (2), described band tooth steel band (6), described interchanger (9) is set to organize series connection more, last group of band tooth steel band setting position is higher than rear one group of band tooth steel band, there is one section of overlapping region in the end of last group of band tooth steel band and the front end of rear one group of band tooth steel band, the fine coal that last group of band tooth steel band is moved can drop on next group band tooth steel band, successively forward, until discharge described upgrading body of heater (2) through the feed opening of this upgrading body of heater.
6. the fine coal upgrading pyrolysis oven according to any one of claim 1-5, is characterized in that, described band tooth steel band (6), can all be engaged with band tooth driving wheel (5) at different temperatures.
7. the fine coal upgrading pyrolysis oven according to any one of claim 1-6, is characterized in that, the fine coal through pyrolysis of discharging from described feed opening (7) falls cold burnt device (17).
8. the fine coal upgrading pyrolysis oven according to any one of claim 1-7, is characterized in that, the thermal source of described interchanger (9) is from the purified gas burning produced in grading process; Or, from the combustion heat wind furnace set up separately; Or, the heat that other material that burns produces.
9. the coal upgrading pyrolytic process utilizing the fine coal upgrading pyrolysis oven described in any one of claim 1-8 to carry out, it is characterized in that, it is inner that raw material fine coal enters upgrading body of heater (2) through coal dropping port (1), fall on band tooth steel band (6), movement along with hot band tooth steel band (6) is sent to the other end of described upgrading body of heater (2), realizes the upgrading pyrolytic reaction of fine coal.
10. coal upgrading pyrolytic process according to claim 9, it is characterized in that, described upgrading body of heater (2) inside arranges interchanger (9), realizes the heating to described band tooth steel band (6), and described interchanger (9) is arranged on the bottom of described band tooth steel band (6);
Described interchanger (9) is provided with smoke inlet pipeline (10) and exhanst gas outlet pipeline (8);
The described high-temperature flue gas from hotblast stove (14) enters into interchanger (9) from smoke inlet pipeline (10) after suitable temperature adjusted to by thermosistor (15), heat exchange is completed with band tooth steel band (6), the temperature being suitable for pyrolysis upgrading reaction will be heated to tooth steel band (6), the flue gas completing heat exchange again through exhanst gas outlet pipeline (8) through induced draft fan (16) transmission, through the first valve (18) directly emptying or be recycled to through the second valve (19) and be transported to interchanger (9) after thermosistor (15) reheats again and complete and recycle; Fine coal through the process of pyrolysis grading process drops to feed opening (7) from the end of band tooth steel band, discharges, realize cooling through cold burnt device (17) through feed opening (7) from upgrading body of heater (2).
11. coal upgrading pyrolytic processes according to claim 9, it is characterized in that, fine coal is through after achieving pyrolysis upgrading reaction in upgrading body of heater (2), produce coal gas of high temperature to discharge from pneumatic outlet (4) through outlet gas line (3), successively through fly-ash separator (11), water cooler (12), press (13), hotblast stove (14) is entered after pressurized, heat exchange interchanger (9) is entered from smoke inlet pipeline (10) after thermosistor (15), discharge from exhanst gas outlet pipeline (8) again, the first valve (18) emptying is delivered to via induced draft fan (16), or be circulated to through the second valve (19) recycle and reuse that thermosistor (15) realizes thermal source.
12. coal upgrading pyrolytic processes according to claim 11, it is characterized in that, inner same described upgrading body of heater (2), described band tooth steel band (6), described interchanger (9) is set to organize series connection more, last group of band tooth steel band setting position is higher than rear one group of band tooth steel band, there is one section of overlapping region in the end of last group of band tooth steel band and the front end of rear one group of band tooth steel band, the fine coal that last group of band tooth steel band is moved can drop on next group band tooth steel band, successively forward, until discharge described upgrading body of heater (2) through the feed opening of this upgrading body of heater,
Each interchanger has independently smoke inlet pipeline and exhanst gas outlet pipeline, each smoke inlet pipeline is connected to thermosistor (15), each exhanst gas outlet pipeline is connected to the first valve (18) emptying, or is circulated to thermosistor (15) through the second valve (19) and realizes recycle.
13. improving quality of coal by pyrolysis techniques according to claim 11, it is characterized in that, inner same described upgrading body of heater (2), described band tooth steel band (6), described interchanger (9) is set to organize series connection more, last group of band tooth steel band setting position is higher than rear one group of band tooth steel band, there is one section of overlapping region in the end of last group of band tooth steel band and the front end of rear one group of band tooth steel band, the fine coal that last group of band tooth steel band is moved can drop on next group band tooth steel band, successively forward, until discharge described upgrading body of heater (2) through the feed opening of this upgrading body of heater,
Heat source gas passes into the smoke inlet pipeline of First Heat Exchanger from thermosistor (15), again from the exhanst gas outlet pipeline of this First Heat Exchanger and then the smoke inlet pipeline entering into the second interchanger, the exhanst gas outlet pipeline of an interchanger is made to connect with the smoke inlet pipeline of next interchanger in this way, to the last to be finally connected to the first valve (18) emptying for the exhanst gas outlet pipeline of an interchanger, or be circulated to thermosistor (15) by the second valve (19) and realize recycle.
14. coal upgrading pyrolytic processes according to claim 11, it is characterized in that, described upgrading pyrolysis oven is set to multiple series connection and uses, fine coal through last upgrading pyrolysis oven is discharged from the feed opening (7) of described last upgrading pyrolysis oven, the coal dropping port of a upgrading pyrolysis oven after entering into, after described the coal dropping port of a upgrading pyrolysis oven fall into described after a upgrading pyrolysis oven inside hot band tooth steel band on complete pyrolytic process, discharge, until last carries hot pyrolysis oven from the coal dropping port of a described rear upgrading pyrolysis oven again;
From thermosistor (15) heat source gas out by mode in parallel for the interchanger of each upgrading pyrolysis oven provides heat, or by the mode of connecting for the interchanger of each upgrading pyrolysis oven provides heat;
Pool together by induced draft fan (16) through the first valve (18) emptying from the exhanst gas outlet pipeline expellant gas of the interchanger of each upgrading pyrolysis oven, or be circulated to thermosistor (15) realize recycle by the second valve (19).
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2539108A (en) * | 2016-06-10 | 2016-12-07 | Green Made Easy Ltd | Pyrolysis device |
| CN110172358A (en) * | 2019-06-27 | 2019-08-27 | 西安建筑科技大学 | A kind of pyrolysis atmosphere furnace and coal hydrogenation microwave-heating system and method |
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| GB2539108B (en) * | 2016-06-10 | 2017-05-17 | Green Made Easy Ltd | Pyrolysis device |
| CN110172358A (en) * | 2019-06-27 | 2019-08-27 | 西安建筑科技大学 | A kind of pyrolysis atmosphere furnace and coal hydrogenation microwave-heating system and method |
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| CN105062523B (en) | 2018-07-13 |
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