CN203741270U - Quality-lifting processing device for low-rank coal - Google Patents
Quality-lifting processing device for low-rank coal Download PDFInfo
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- CN203741270U CN203741270U CN201320875222.9U CN201320875222U CN203741270U CN 203741270 U CN203741270 U CN 203741270U CN 201320875222 U CN201320875222 U CN 201320875222U CN 203741270 U CN203741270 U CN 203741270U
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- semicoke
- water cooler
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Abstract
The utility model provides a quality-lifting processing device for low-rank coal. The device comprises a drying furnace, wherein the lower end of the drying furnace is connected with a pyrolyzing furnace and the lower end of the pyrolyzing furnace is connected with a semicoke cooler; the upper end of the drying furnace is connected with a cooler which is connected with the bottom end of the semicoke cooler at the same time; raw coal dried by the drying furnace enters the pyrolysing furnace to generate hot semicoke which enters the semicoke cooler to be subjected to heat exchange with a low-temperature recycle gas cooled by the cooler in the semicoke cooler. The device can realize the purpose of recycling quantity of heat, and hot semicoke can be cooled by the low-temperature drying tail gas to realize the purpose of saving water.
Description
Technical field
The utility model relates to a kind of processing unit (plant) of coal, relates in particular to a kind of device of low-rank coal upgrading processing.
Background technology
Chinese coal reserves account for 12% of global coal resources, and the standing stock of China's low-rank coal just account for 50% left and right of coal reserves, but output accounts for 30% of current total amount.See by the formation epoch of CHINESE COAL, with Jurassic Coal reserves maximum, account for the whole nation and verified 45% left and right of retained reserve, the coal being formed by these epoch is except only a few hard coal, and all the other great majority are the low-rank coal such as brown coal, long-flame coal, non-caking coal and weakly caking coal.In areal distribution, reserves major part concentrates on the Inner Mongol, Shaanxi, Xinjiang, Gansu, Shanxi, six provinces in Ningxia (district), and these areas are places of the serious scarcity of China's water resources, restrict to a certain extent and utilized these low-rank coal to process upgrading industrial expansion.
Low-rank coal is due to high-moisture, high-volatile, low heat value and the feature of spontaneous combustion very easily, thereby be unsuitable for standing storage and long-distance transportation, be considered for a long time a kind of low-grade coal resource, be only used as at present near coal-mine Power Plant Fuel and near coal-mine gasified raw material, limited the rational exploitation and utilization of low-rank coal resource.How Efficient Conversion utilizes low-rank coal just to become a major issue of coal utilization.
In recent years, adopt low-temperature pyrolysis, low-rank coal is carried out to upgrading and put forward oily technique, due to its technology maturation, invest the advantages such as low, be subject to domestic and international common concern.
The existing technique report about low-rank coal upgrading processing has many, the wherein typical as large new method technique of work solid thermal carriers, the silver-colored LCC technology of Datang China etc.
In the patent of invention that is 200810188298.8 in the patent No., it specifically discloses following technical scheme: raw coal grain is sent into moisture eliminator, under normal pressure, carry out weary oxygen hot gas dry, moisture content in raw coal grain is carried out to physics to be removed, the dry coal that removes moisture content is sent into dry distiller, under normal pressure, pass into weary carrier of oxygen and heat destructive distillation, by chemical transformation, fugitive constituent in raw coal is overflowed with gaseous form.Shortcoming in this patented technology is carried out Quench for (1) hot semicoke type of cooling adopts cold water, and water consumption is large, and the heat of hot semicoke do not recycle, not energy-conservation; (2) water that raw coal is removed by physics mode does not reclaim.
Summary of the invention
In order to address the above problem, the utility model provides a kind of low-rank coal upgrading processing unit (plant), and it can reach the object of heat recycle, and can utilize cryodrying tail gas cooling heat semicoke, reaches the object of water saving.
In order to achieve the above object, the utility model provides a kind of low-rank coal upgrading processing unit (plant), comprises drying oven, and the lower end of drying oven connects pyrolysis oven, and the lower end of pyrolysis oven connects semicoke water cooler; The upper end of drying oven connects water cooler, water cooler is connected with the bottom of semicoke water cooler simultaneously, raw coal enters into pyrolysis oven and produces hot semicoke after kiln dried, and hot semicoke enters into semicoke water cooler and carries out heat exchange through the cooled cold cycle gas of water cooler at semicoke water cooler.
Preferably, be connected the first fly-ash separator between drying oven and water cooler, between drying oven and semicoke water cooler, be connected with the second fly-ash separator, fly-ash separator can be by the dedusting of flowing through.
Preferably, water cooler is connected with tank, and the cooling circulation gas cold cycle gas that becomes is entered into semicoke water cooler by the recycle-water that water cooler absorbs in tank, and the water coolant producing in water cooler enters into tank and is recovered utilization.
Preferably, pyrolysis oven is connected with tar recovery system and the 3rd fly-ash separator in turn, and tar recovery system is also connected with tar storage tank, and the coal tar of collecting in tar recovery system enters into tar storage tank.
Preferably, between the 3rd fly-ash separator and pyrolysis oven, be also connected with hotblast stove, dried raw coal enters into high temperature pyrolysis gas that pyrolysis oven produces and after tar recovery system, forms Low Temperature Thermal and vent one's spleen, Low Temperature Thermal is vented one's spleen and after the 3rd fly-ash separator dedusting, is entered into hotblast stove and burn, and the hot flue gas after burning enters into pyrolysis oven as the hot flue gas of destructive distillation.
Preferably, semicoke water cooler comprises body of heater, body of heater middle part is tubular shaft, the top of body of heater is provided with the airtight guard shield of circle of a certain taper, the central authorities of the airtight guard shield of circle on top are provided with production well, be provided with semicoke opening for feed at the side of production well, the bottom of body of heater is an airtight guard shield of flat circle, and the central authorities of the circular gas-tight enclosure of bottom are provided with circular semicoke discharge port.
Preferably, the side of the circular gas-tight enclosure semicoke discharge port of semicoke water cooler bottom is also provided with inlet mouth, rotary oven dish is housed in body of heater, and by a series of diameters, donuts different and crossover mutually form rotation stone or metal plate for standing a stove on as a precaution against fire, and rotation stone or metal plate for standing a stove on as a precaution against fire is downward-sloping from outside towards dish center direction.
Preferably, on rotation stone or metal plate for standing a stove on as a precaution against fire, some rake teeths have been arranged.
Preferably, the airtight guard shield of circle on semicoke water cooler top and rotation stone or metal plate for standing a stove on as a precaution against fire, be sealing structure for water between the airtight guard shield of circle of semicoke water cooler bottom and tubular shaft.
Preferably, drying oven, pyrolysis oven are identical with semicoke cooler construction.
The advantage that the utility model has compared to prior art is:
(1) can utilize the dried tail gas of dryer section generation after the moisture content in cooling back ending gas, then carry out heat exchange with hot semicoke, after heat exchange, cryodrying tail gas becomes high-temperature flue gas, then after dedusting, enters moisture eliminator, be dried raw coal, reach the object of heat recycle;
(2) utilize cryodrying tail gas cooling heat semicoke, reach the object of water saving.
Brief description of the drawings
Fig. 1 is the structural representation of low-rank coal upgrading processing unit (plant) in the utility model;
Fig. 2 is the structure iron of semicoke water cooler in Fig. 1.
Embodiment
Below, by exemplary embodiment, the utility model is specifically described.But should be appreciated that element, structure and the feature in an embodiment also can be attached in other embodiments valuably in the situation that further not narrating.
Referring to Fig. 1, it is the structural representation of low-rank coal upgrading processing unit (plant) in the utility model.As shown in the figure, low-rank coal upgrading processing unit (plant) comprises drying oven 1, and the lower end of drying oven 1 connects pyrolysis oven 2, and the lower end of pyrolysis oven 2 connects semicoke water cooler 3, and the bottom of semicoke water cooler 3 connects water cooler 6; The upper end of drying oven 1 connects water cooler 6, water cooler 6 is connected with tank 7, the cooling circulation gas cold cycle gas that becomes is entered into semicoke water cooler 3 by the recycle-water that water cooler 6 absorbs in tank 7, and the water coolant producing in water cooler 6 enters into tank 7 and is recovered utilization; Water cooler 6 is connected with the bottom of semicoke water cooler 3 simultaneously, is also connected the first fly-ash separator 81 between drying oven 1 and water cooler 6, is connected with the second fly-ash separator 82 between drying oven 1 and semicoke water cooler 3, and fly-ash separator can be by the dedusting of flowing through,
When work, raw coal enters into pyrolysis oven 2 after drying oven 1 is dry, at the hot semicoke of the interior generation of pyrolysis oven 2, hot semicoke further enters into semicoke water cooler 3, the circulation gas (this circulation gas is tail gas) that drying oven 1 produces in the time of drying low-order coal is in addition through the first fly-ash separator 81 dedustings, the cooling tail gas cold cycle gas that becomes is entered into semicoke water cooler 3 by the recycle-water that water cooler 6 absorbs in tank 7, the water coolant producing in water cooler 6 enters into tank 7 and is recovered utilization, cold cycle gas with in semicoke water cooler 3, carry out heat exchange from the high temperature semicoke in pyrolysis oven 2, and then after semicoke is cooling, enter semicoke e Foerderanlage 9, and then be admitted to warehouse, cold cycle gas becomes high temperature circulation gas after by the heat exchange of high temperature semicoke, high temperature circulation gas enters into drying oven 1 through the second fly-ash separator 82, as the thermal source of dry raw coal.
Pyrolysis oven 2 is also connected with tar recovery system 4 and the 3rd fly-ash separator 83 in turn, tar recovery system 4 is also connected with tar storage tank 41, between the 3rd fly-ash separator 83 and pyrolysis oven 2, be also connected with hotblast stove 5, when work, dried raw coal enters into pyrolysis oven 2 except producing half hot afocal, also produce high temperature pyrolysis gas, high temperature pyrolysis gas forms Low Temperature Thermal and vents one's spleen after tar recovery system 4, Low Temperature Thermal is vented one's spleen and is entered into hotblast stove 5 burnings through the laggard step of the 3rd fly-ash separator 83 dedustings, hot flue gas after burning enters into pyrolysis oven 2 as the hot flue gas of destructive distillation, in addition, the coal tar of collecting in tar recovery system 41 enters into tar storage tank 41.
Referring to Fig. 2, it is the structure iron of semicoke water cooler in Fig. 1.It should be noted that the structural similitude of drying oven 1, pyrolysis oven 2 and semicoke water cooler 3 in Fig. 1 is only to describe as an example of semicoke water cooler example herein.As shown in the figure, semicoke water cooler comprises body of heater, the top of body of heater is provided with the airtight guard shield of circle of a certain taper, the central authorities of the airtight guard shield of circle on top are provided with production well 12, be provided with semicoke opening for feed 10 at the side of production well, the bottom of body of heater is an airtight guard shield of flat circle, the central authorities of the circular gas-tight enclosure of bottom are provided with circular semicoke discharge port 13, semicoke enters from semicoke opening for feed 10, from semicoke discharge port 13, semicoke is discharged, side at the circular gas-tight enclosure semicoke discharge port 13 of bottom is also provided with inlet mouth 11, rotary oven dish 14 is housed in body of heater, by some diameters, donuts different and crossover mutually form rotation stone or metal plate for standing a stove on as a precaution against fire 14, rotation stone or metal plate for standing a stove on as a precaution against fire 14 is downward-sloping from outside towards dish center direction.
On rotation stone or metal plate for standing a stove on as a precaution against fire 14, some rake teeths 15 are arranged, in the time that rotation stone or metal plate for standing a stove on as a precaution against fire 14 rotates, rake teeth 15 is as plough, semicoke is constantly pushed away toward stone or metal plate for standing a stove on as a precaution against fire center from the outside of rotation stone or metal plate for standing a stove on as a precaution against fire 14, in the time that rotation stone or metal plate for standing a stove on as a precaution against fire 14 rotates, the semicoke discharge port 13 that by rake teeth 15, coal is constantly pushed into dish from the outside of rotation stone or metal plate for standing a stove on as a precaution against fire 14, the effect of recycling gravity transmits.
The airtight guard shield of circle on semicoke water cooler 3 tops and rotation stone or metal plate for standing a stove on as a precaution against fire 14 are sealing structure for water 16 between the airtight guard shield of circle of semicoke water cooler 3 bottoms and revolving tubular shaft.Water seal is the device of flexibility and changeability, for the sealing gland of interface between the rotation of equipment and fixed part is provided, to prevent that hot gas flow is from air gap leakage, safeguards the pressure of hot gas carrier.
Be appreciated that the utility model is described by some embodiment, those skilled in the art know, in the situation that not departing from spirit and scope of the present utility model, can carry out various changes or equivalence replacement to these features and embodiment.In addition, under instruction of the present utility model, can modify to adapt to concrete situation and material and can not depart from spirit and scope of the present utility model these features and embodiment.Therefore, the utility model is not subject to the restriction of specific embodiment disclosed herein, and the embodiment within the scope of all the application's of falling into claim belongs in the scope that the utility model protects.
Claims (10)
1. a low-rank coal upgrading processing unit (plant), comprises drying oven (1), and the lower end of drying oven (1) connects pyrolysis oven (2), it is characterized in that, the lower end of pyrolysis oven (2) connects semicoke water cooler (3); The upper end of drying oven (1) connects water cooler (6), water cooler (6) is connected with the bottom of semicoke water cooler (3) simultaneously, raw coal enters into pyrolysis oven (2) and produces hot semicoke after drying oven (1) is dry, and hot semicoke enters into semicoke water cooler (3) and carries out heat exchange through the cooled cold cycle gas of water cooler (6) at semicoke water cooler (3).
2. low-rank coal upgrading processing unit (plant) according to claim 1, it is characterized in that, drying oven (1) and middle the first fly-ash separator (81) that is connected of water cooler (6), between drying oven (1) and semicoke water cooler (3), be connected with the second fly-ash separator (82), fly-ash separator can be by the dedusting of flowing through.
3. low-rank coal upgrading processing unit (plant) according to claim 1 and 2, it is characterized in that, water cooler (6) is connected with tank (7), the cooling circulation gas cold cycle gas that becomes is entered into semicoke water cooler (3) by the recycle-water that water cooler (6) absorbs in tank (7), and the water coolant producing in water cooler (6) enters into tank (7) and is recovered utilization.
4. low-rank coal upgrading processing unit (plant) according to claim 3, it is characterized in that, pyrolysis oven (2) is connected with tar recovery system (4) and the 3rd fly-ash separator (83) in turn, tar recovery system (4) is also connected with tar storage tank (41), and the coal tar of collecting in tar recovery system (41) enters into tar storage tank (41).
5. low-rank coal upgrading processing unit (plant) according to claim 4, it is characterized in that, between the 3rd fly-ash separator (83) and pyrolysis oven (2), be also connected with hotblast stove (5), dried raw coal enters into the high temperature pyrolysis gas that pyrolysis oven (2) produces and after tar recovery system (4), forms Low Temperature Thermal and vent one's spleen, Low Temperature Thermal is vented one's spleen and after the 3rd fly-ash separator (83) dedusting, is entered into hotblast stove (5) burning, and the hot flue gas after burning enters into pyrolysis oven (2) as the hot flue gas of destructive distillation.
6. low-rank coal upgrading processing unit (plant) according to claim 1, it is characterized in that, semicoke water cooler (3) comprises body of heater, body of heater middle part is tubular shaft, the top of body of heater is provided with the airtight guard shield of circle of a certain taper, the central authorities of the airtight guard shield of circle on top are provided with production well (12), be provided with semicoke opening for feed (10) at the side of production well, the bottom of body of heater is an airtight guard shield of flat circle, and the central authorities of the circular gas-tight enclosure of bottom are provided with circular semicoke discharge port (13).
7. low-rank coal upgrading processing unit (plant) according to claim 6, it is characterized in that, the side of the circular gas-tight enclosure semicoke discharge port (13) of semicoke water cooler (3) bottom is also provided with inlet mouth (11), rotary oven dish (14) is housed in body of heater, by a series of diameters, donuts different and crossover mutually form rotation stone or metal plate for standing a stove on as a precaution against fire (14), and rotation stone or metal plate for standing a stove on as a precaution against fire (14) is downward-sloping from outside towards dish center direction.
8. low-rank coal upgrading processing unit (plant) according to claim 7, is characterized in that, on rotation stone or metal plate for standing a stove on as a precaution against fire (14), has arranged some rake teeths (15).
9. low-rank coal upgrading processing unit (plant) according to claim 8, it is characterized in that, the airtight guard shield of circle on semicoke water cooler (3) top and rotation stone or metal plate for standing a stove on as a precaution against fire (14) are sealing structure for water (16) between the airtight guard shield of circle of semicoke water cooler (3) bottom and tubular shaft.
10. low-rank coal upgrading processing unit (plant) according to claim 9, is characterized in that, drying oven (1), pyrolysis oven (2) are identical with semicoke water cooler (3) structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875222.9U CN203741270U (en) | 2013-12-27 | 2013-12-27 | Quality-lifting processing device for low-rank coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320875222.9U CN203741270U (en) | 2013-12-27 | 2013-12-27 | Quality-lifting processing device for low-rank coal |
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| Publication Number | Publication Date |
|---|---|
| CN203741270U true CN203741270U (en) | 2014-07-30 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201320875222.9U Expired - Fee Related CN203741270U (en) | 2013-12-27 | 2013-12-27 | Quality-lifting processing device for low-rank coal |
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| CN (1) | CN203741270U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312598A (en) * | 2014-10-30 | 2015-01-28 | 神华集团有限责任公司 | Semicoke producing system |
| CN106053119A (en) * | 2016-08-04 | 2016-10-26 | 中国五环工程有限公司 | Experiment device for researching rake teeth design |
-
2013
- 2013-12-27 CN CN201320875222.9U patent/CN203741270U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104312598A (en) * | 2014-10-30 | 2015-01-28 | 神华集团有限责任公司 | Semicoke producing system |
| CN106053119A (en) * | 2016-08-04 | 2016-10-26 | 中国五环工程有限公司 | Experiment device for researching rake teeth design |
| CN106053119B (en) * | 2016-08-04 | 2019-02-22 | 中国五环工程有限公司 | A kind of experimental provision of research rake teeth design |
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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: 20140730 Termination date: 20191227 |