CN203704558U - Hot waste gas reverse-flow type brown coal drying furnace - Google Patents
Hot waste gas reverse-flow type brown coal drying furnace Download PDFInfo
- Publication number
- CN203704558U CN203704558U CN201420066132.XU CN201420066132U CN203704558U CN 203704558 U CN203704558 U CN 203704558U CN 201420066132 U CN201420066132 U CN 201420066132U CN 203704558 U CN203704558 U CN 203704558U
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- waste gas
- hot waste
- hot
- air
- brown coal
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- 239000002912 waste gas Substances 0.000 title claims abstract description 84
- 238000001035 drying Methods 0.000 title claims abstract description 45
- 239000003077 lignite Substances 0.000 title claims abstract description 39
- 239000003245 coal Substances 0.000 claims abstract description 35
- 238000011084 recovery Methods 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims description 20
- 239000000428 dust Substances 0.000 claims description 16
- 239000004744 fabric Substances 0.000 claims description 11
- 239000007789 gas Substances 0.000 abstract description 15
- 230000018044 dehydration Effects 0.000 abstract description 9
- 238000006297 dehydration reaction Methods 0.000 abstract description 9
- 238000003860 storage Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 5
- 238000000034 method Methods 0.000 abstract description 4
- 239000002699 waste material Substances 0.000 abstract 2
- 239000002440 industrial waste Substances 0.000 description 8
- 238000001704 evaporation Methods 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000032258 transport Effects 0.000 description 5
- 238000002485 combustion reaction Methods 0.000 description 4
- 230000008020 evaporation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000002269 spontaneous effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 206010033799 Paralysis Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 239000003990 capacitor Substances 0.000 description 1
- 239000000567 combustion gas Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
Abstract
The utility model discloses a hot waste gas reverse-flow type brown coal drying furnace and belongs to the technical field of brown coal drying equipment. The brown coal drying furnace is good in dehydration effect and high in dehydration efficiency. According to the technical scheme, the hot waste gas reverse-flow type brown coal drying furnace comprises a drying oven, an air supply device and a recovery device, an air supply pipe is arranged in the drying oven, the air supply pipe divides the drying oven into a drying bin and a coal storage bin, the drying bin is arranged above the coal storage bin, the air supply pipe and the air supply device are connected through a hot waste gas inlet pipe, a plurality of hot waste gas distributing umbrellas are arranged on the air supply pipe, air outlets of the hot waste gas distributing umbrellas are formed downwards, the inner portion of the drying bin is connected with the recovery device through a waste hot gas outlet pipe which is arranged above the air supply pipe, and the waste hot gas outlet pipe is provided with a plurality of air sucking holes. The hot waste gas reverse-flow type brown coal drying furnace can process raw coal with different grain diameters.
Description
Technical field
The reverse-flow brown coal drying stove of a kind of hot waste gas of the utility model, belongs to brown coal drying equipment technical field.
Background technology
Whole world brown coal oil in place is about 4,000,000,000,000 t, accounts for 40%-50% of global coal reserves.China's brown coal are verified reserves 1,300 hundred million t, account for 13% left and right of national coal gross reserves, separately have brown coal prognostic resources 1,903 hundred million t.China's lignite resource distributes relatively concentrated, with northeastern Inner Mongolia area at most, accounts for 3/4 of national brown coal reserves; Account for 1/5 of the whole nation with the brown coal reserves of Wei Zhu southwest, Yunnan Province; The brown coal of northeast, East China and ALFISOL IN CENTRAL only account for 5% left and right in the whole nation.
Brown coal because its calorific value is low, easy-weathering, water content high (total moisture is up to 30～50%), easily spontaneous combustion, and brought many difficulties to aspects such as its storage, transport and burnings.The feature of brown coal self has determined that it should not do long term storage or long-distance transport; And the high brown coal of boiler combustion moisture will cause flame temperature to reduce, the thermal efficiency declines; When power plant is used the high brown coal of moisture, need to adopt larger more expensive boiler just can significantly reduce or avoid power plant's nominal output to reduce.Visible brown coal had both been unfavorable for transport and storage without dry processing, were also difficult to meet the quality requirement of multiple user to coal, had had a strong impact on the direct utilization of lignite resource.Therefore, brown coal are carried out to upgrading, reduce moisture, improve caloric value, strengthen applicability, to building a resource-conserving society, ensure the sustainable development of national economy, there is important theoretical and practical significance.After brown coal drying, its composition and character level off to bituminous coal, are more conducive to transport, storage and utilize.
The drying and dehydrating technology of coal is a lot, roughly can be divided into mechanical dehydration, dehydration by evaporation and non-evaporating dehydrolysis three major types.Wherein mechanical dehydration technology is in coal preparation plant extensive use, but the still difficult requirement that adapts to brown coal dehydration of its disposal ability and dewatering efficiency.Dehydration by evaporation method can reduce the moisture of brown coal, improves the calorific value of brown coal, but simple dehydration by evaporation is difficult to change the physical chemistry structure of brown coal, can not solve its easy spontaneous combustion and the difficult problem such as water suction again, can be used as stokehold dehydration technique use.Non-evaporating dehydrolysis upgrading technology is that brown coal are directly contacted with high temperature and high pressure steam, makes moisture be in a liquid state, and does not need evaporation latent heat, and the thermal efficiency is high.
Utility model content
The utility model overcomes the deficiency that prior art exists, and technical problem to be solved is for providing the brown coal drying that a kind of dehydrating effect is good and dewatering efficiency is high stove.
In order to solve the problems of the technologies described above, the technical solution adopted in the utility model is: the reverse-flow brown coal drying stove of a kind of hot waste gas, comprise drying oven, for drying oven provides the air supply device of hot waste gas and the retracting device of recovery hot waste gas, in drying oven, be provided with for airduct, for airduct, drying oven is divided into dryness storehouse and coal warehouse two parts, dryness storehouse and coal warehouse comprise again multiple independently small chamber, dryness storehouse is arranged on the top of coal warehouse, for being connected by hot waste gas inlet tube between airduct and air supply device, be provided with multiple hot waste gas cloth ballutes on airduct, all arranging down for airduct air outlet under multiple hot waste gas cloth ballutes, between the inside of dryness storehouse and retracting device, be connected by hot waste gas outlet, hot waste gas outlet is arranged on the top for airduct, on hot waste gas outlet, be provided with multiple wind inlets.
Wherein, described air supply device comprises hot-blast stove and returns gas-distributing fan, between described hot-blast stove and confession airduct, is connected by hot waste gas inlet tube, between described hot-blast stove and retracting device, is connected by returning gas-distributing fan, is also connected with air blast on described hot-blast stove.
Wherein, described retracting device comprises cyclone dust collectors, air-introduced machine and cooling device composition, one end of described cyclone dust collectors is connected with hot waste gas outlet, between the other end and air cooling tower, is connected by air-introduced machine, passes through back gas-distributing fan and be connected between described air cooling tower and hot-blast stove.
Wherein, between described cyclone dust collectors and air cooling tower, be provided with the accessory fan in parallel with air-introduced machine.
Wherein, between described air cooling tower and air-introduced machine, be also connected with chimney, on described chimney, be provided with valve.
The utility model compared with prior art has following beneficial effect.
One, drying oven of the present utility model is divided into dryness storehouse and two parts of coal warehouse, between dryness storehouse and coal warehouse, be provided with heat for airduct, hot waste gas cloth ballute is arranged with the airduct that supplies of Jet with downward flow direction hot waste gas, from dryness storehouse, in direction dryness storehouse, pour the raw coal that needs processing into, the hot waste gas of air feed pipe inspection and brown coal counter current contacting under hot waste gas cloth ballute, between raw coal and hot waste gas, heat exchange is complete, moisture in raw coal is pulled away, drying effect is good, and, the utility model can be dried the raw coal of various different sizes, and operation that can be continual and steady for a long time, meet the demand of different industrial production to coal particle diameter.
Two, hot waste gas of the present utility model can be industrial waste gas, also can make hot waste gas by oneself, hot waste gas of the present utility model can utilize multiple industrial waste gas, such as coal combustion waste gas, gas-fired waste gas, gas retort smoke evacuation waste gas and boiler exhaust gas waste gas etc., can utilize industrial waste gas to process raw coal and produce economic benefit, can process industrial waste gas again, reduce the pollution of industrial waste gas to environment.
Three, on the hot waste gas outlet of drying oven of the present utility model, be provided with cyclone dust collectors, hot waste gas outlet is in the time of combustion gas, in pipeline, have unavoidably dust, cyclone dust collectors can be processed the dust in hot waste gas outlet clean, avoid because dust causes damage to other equipment, and affect the normal operation of whole system.
Four, between cyclone dust collectors of the present utility model and air cooling tower, be set side by side with air-introduced machine and accessory fan, in course of normal operation, only have the normal work of air-introduced machine can meet need of work, in the time that air-introduced machine breaks down, can start accessory fan and carry out air draught, like this, for whole system provides dual fail-safe, avoid because the fault of air-introduced machine causes whole system paralysis.
Five, in retracting device of the present utility model, arrange with air cooling tower, by air cooling tower to the hot waste gas processing of lowering the temperature of reclaiming, and the cold air after discharging is mixed with the hot waste gas in drying oven, to reach the dry required temperature of raw coal, so both can both utilize waste gas after treatment, reduce again the pollution to environment.
Six, between air cooling tower of the present utility model and blower fan, be provided with chimney, when reclaim hot waste gas amount too large, can not utilize completely time, in order to ensure the safe and stable operation of whole system, unnecessary hot waste gas is just discharged from chimney, in chimney, be provided with controllable valve, control the discharge rate of hot waste gas by valve, efficient and convenient.
Brief description of the drawings
Below in conjunction with accompanying drawing, the utility model is described in more detail.
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the internal structure schematic diagram of drying oven in Fig. 1.
In figure: 1 is drying oven, 2 is air supply device, and 3 is retracting device, 11 for supplying airduct, and 12 is dryness storehouse, and 13 is coal warehouse, 14 is hot waste gas inlet tube, and 15 is hot waste gas cloth ballute, and 16 is hot waste gas outlet, 17 is wind inlet, and 21 is hot-blast stove, and 22 are back gas-distributing fan, 23 is air blast, and 31 is cyclone dust collectors, and 32 is air-introduced machine, 33 is air cooling tower, and 34 is accessory fan, and 35 is chimney.
Detailed description of the invention
By reference to the accompanying drawings the utility model is described in further detail now, these accompanying drawings are the schematic diagram of simplification, and basic structure of the present utility model is only described in a schematic way, and therefore it only shows the formation relevant with the utility model.
The utility model is a kind of reverse-flow brown coal drying stove of industrial hot waste gas that is applicable to, between hot-blast stove 21 of the present utility model and drying oven 1, be connected by hot waste gas inlet tube 14, hot-blast stove 21 provides the hot waste gas of drying use under the effect of air blast 23 in drying oven 1, drying oven 1 is mainly divided into dryness storehouse 12 and coal warehouse 13 two parts, dryness storehouse 12 and coal warehouse 13 are divided into multiple supporting small chamber, between dryness storehouse 12 and coal warehouse 13, be provided with for airduct 11, be provided with multiple hot waste gas cloth ballutes 15 on airduct 11, hot waste gas cloth ballute 15 is beveled structure, the bottom of beveled structure is air outlet, hot waste gas inlet tube 14 is incorporated into the hot waste gas of hot-blast stove 21 in airduct 11, for hot waste gas out in airduct 11 after hot waste gas cloth ballute 15 distributes air-flow, hot waste gas is from the 15 bottom ejections of hot waste gas cloth ballute, dryness storehouse 12 is arranged on the top of coal warehouse 13, belt conveyor is sent to material in dryness storehouse 12 from the top of dryness storehouse 12, raw coal slowly moves from top to bottom in dryness storehouse 12, carry out counter current contacting with hot waste gas from bottom to top, raw coal and hot waste gas carry out after heat exchange, moisture in coal is taken away, raw coal mixes in capacitor with hot waste gas, drying effect is good, avoid the long range diffusion of coal in dryness storehouse 12, after dried brown coal drop to coal warehouse 13, the belt conveyor arranging via 13 ends of coal warehouse transports user to, in addition, the hot waste gas adopting can be industrial waste gas, like this, can utilize industrial waste gas to produce economic benefit, can reduce again the harmful effect that industrial waste gas causes environment.
Air-introduced machine 32 extracts the gas in hot waste gas outlet 16, hot waste gas after heat exchange enters into hot waste gas outlet 16 after wind inlet 17, hot waste gas is sent to dedusting in cyclone dust collectors 31 by hot waste gas outlet 16, avoid the dust in hot waste gas to cause damage to other equipment, hot waste gas after dedusting enters in air cooling tower 33 after by air-introduced machine 32, between air-introduced machine 32 and air cooling tower 33, be also provided with chimney 35, on chimney 35, be provided with valve, unnecessary hot waste gas can be discharged from chimney 35 according to needs of production, in the time not needing exhaust, by valve closing, ensure the safe operation of a whole set for the treatment of system, air cooling tower 33 is by after the cooling precipitation of hot waste gas after discharging, be sent to back in gas-distributing fan 22, returning gas-distributing fan 22 need to be by after the hot waste gas mixing of cold gas recovery and new dispensing according to actual temperature, for drying oven 1 provides the required dry gas of using.
In addition, between cyclone dust collectors 31 and air cooling tower 33, be also provided with accessory fan 34, accessory fan 34 is in parallel with air-introduced machine 32, in the time that air-introduced machine 32 breaks down, can start accessory fan 34 and work, for the safe normal operation of system provides dual fail-safe.
Claims (5)
1. the reverse-flow brown coal drying stove of hot waste gas, comprise drying oven (1), for drying oven (1) provides the air supply device (2) of hot waste gas and the retracting device (3) of recovery hot waste gas, it is characterized in that, in described drying oven (1), be provided with for airduct (11), drying oven (1) is divided into dryness storehouse (12) and coal warehouse (13) two parts by the described airduct (11) that supplies, described dryness storehouse (12) is positioned at the top of coal warehouse (13), described for being connected by hot waste gas inlet tube (14) between airduct (11) and air supply device (2), for being provided with multiple hot waste gas cloth ballutes (15) on airduct (11), the lower air outlet for airduct of described multiple hot waste gas cloth ballutes (15) all arranges down, between the inside of described dryness storehouse (12) and retracting device (3), be connected by hot waste gas outlet (16), described hot waste gas outlet (16) is arranged on the top for airduct (11), on described hot waste gas outlet (16), be provided with multiple wind inlets (17).
2. the reverse-flow brown coal drying stove of a kind of hot waste gas according to claim 1, it is characterized in that, described air supply device (2) comprises hot-blast stove (21) and returns gas-distributing fan (22), between described hot-blast stove (21) and confession airduct (11), be connected by hot waste gas inlet tube (14), between described hot-blast stove (21) and retracting device (3), be connected by returning gas-distributing fan (22), on described hot-blast stove (21), be also connected with air blast (23).
3. the reverse-flow brown coal drying stove of a kind of hot waste gas according to claim 1, it is characterized in that, described retracting device (3) comprises cyclone dust collectors (31), air-introduced machine (32) and air cooling tower (33), one end of described cyclone dust collectors (31) is connected with hot waste gas outlet (16), between the other end and air cooling tower (33), be connected by air-introduced machine (32), between described air cooling tower (33) and hot-blast stove (21), pass through back gas-distributing fan (22) and be connected.
4. the reverse-flow brown coal drying stove of a kind of hot waste gas according to claim 3, is characterized in that, is provided with the accessory fan (34) in parallel with air-introduced machine (32) between described cyclone dust collectors (31) and air cooling tower (33).
5. the reverse-flow brown coal drying stove of a kind of hot waste gas according to claim 4, is characterized in that, between described air cooling tower (33) and air-introduced machine (32), is also provided with chimney (35), and described chimney is provided with valve on (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066132.XU CN203704558U (en) | 2014-02-15 | 2014-02-15 | Hot waste gas reverse-flow type brown coal drying furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420066132.XU CN203704558U (en) | 2014-02-15 | 2014-02-15 | Hot waste gas reverse-flow type brown coal drying furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203704558U true CN203704558U (en) | 2014-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420066132.XU Expired - Lifetime CN203704558U (en) | 2014-02-15 | 2014-02-15 | Hot waste gas reverse-flow type brown coal drying furnace |
Country Status (1)
| Country | Link |
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| CN (1) | CN203704558U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513396A (en) * | 2017-08-31 | 2017-12-26 | 榆林煤化工产业促进中心 | A kind of fine coal drying oven dried based on packed bed and drying device and technique based on the drying oven |
-
2014
- 2014-02-15 CN CN201420066132.XU patent/CN203704558U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107513396A (en) * | 2017-08-31 | 2017-12-26 | 榆林煤化工产业促进中心 | A kind of fine coal drying oven dried based on packed bed and drying device and technique based on the drying oven |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANXI XINGYUZHOU COKING ENGINEERING DESIGN CO., L Free format text: FORMER OWNER: DU JINAN Effective date: 20150414 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20150414 Address after: Tianjia science and technology building 20 No. 030006 Shanxi city of Taiyuan province high technology zone road, Room 302 Patentee after: SHANXI XINGYUZHOU COKING ENGINEERING DESIGN Co.,Ltd. Address before: Tianjia science and technology building 20 No. 030006 Shanxi city of Taiyuan province high technology zone road 301 Patentee before: Du Jinan |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140709 |