CN203021524U - Efficient drying and quality lifting device for brown coal - Google Patents
Efficient drying and quality lifting device for brown coal Download PDFInfo
- Publication number
- CN203021524U CN203021524U CN 201220705665 CN201220705665U CN203021524U CN 203021524 U CN203021524 U CN 203021524U CN 201220705665 CN201220705665 CN 201220705665 CN 201220705665 U CN201220705665 U CN 201220705665U CN 203021524 U CN203021524 U CN 203021524U
- Authority
- CN
- China
- Prior art keywords
- brown coal
- rotary
- outlet
- drum drier
- coal
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Landscapes
- Drying Of Solid Materials (AREA)
Abstract
The utility model relates to an efficient drying and quality lifting device for brown coal. At current, no efficient drying and quality lifting device for brown coal for improving the value in use of brow coal is available. The device provided by the utility model is characterized by comprising a coal storage cabin, a fuel cabin, a hot blast furnace, a drum-type drier, a product cabin, a cyclone dust collector, an electric deduster, a draught fan, a chimney and a plurality of pipelines. The coal storage cabin is connected with the brown coal inlet of the drum-type drier, the brown coal outlet of the drum-type drier is connected with the product cabin, the low temperature smoke outlet of the drum-type drier is connected with the smoke inlet of the cyclone dust collector, the initial purified gas outlet of the cyclone dust collector is connected with the initial purified gas inlet of the electric deduster, the purified gas outlet of the electric deduster is connected the draught fan, and the initial smoke outlet of the cyclone dust collector, the smoke outlet of the electric deduster and the fuel cabin are connected with the gas inlet of the hot blast furnace. According to the device provided by the utility model, the water content in brown coal can be greatly reduced, the partial ash content in brown coal can be reduced, and the value in use of brown coal is improved.
Description
Technical field
The utility model relates to a kind of brown coal highly effective drying device for improving quality, is used for brown coal are carried out drying and dehydrating and remove part of ash, to improve the grade of brown coal.
Background technology
China has abundant coal resources, and wherein, the brown coal reserves account for 15% left and right of coal total reserves.But, because the water content of brown coal is high, and be attended by many spoils and sand in coalification course, cause the calorific value of brown coal lower, thereby bring certain difficulty to industrial application.
Brown coal have following typical characteristics.
(1) calorific value is low.The brown coal calorific value is generally in 3000 about kilocalories, and is also more much lower than the low grade coal 4600 kilocalorie standards of industrial application regulation, and as seen, the industrial utilization that wants to improve brown coal is worth, must its calorific value of raising.
(2) water content is high.The water content of general brown coal is more than 30%, and the high-moisture of brown coal has not only increased transportation cost unnecessary in the transportation, and when brown coal during as steam coal, and it enters the reduction that will cause the interior original temperature of stove after stove.
(3) hole is flourishing, and density is low.Brown coal have flourishing hole, easily weathering, and easily spontaneous combustion is unfavorable for storing.
(4) high volatile.Brown coal have very high volatile matter, surpass the steam coal for power specified standards, are unfavorable for the stable burning of burner hearth.
because brown coal have above-mentioned characteristic, so, when using brown coal in industry, need to carry out drying and upgrading to brown coal processes, also there are at present some to be used for brown coal are carried out the equipment that drying and upgrading is processed, it was on October 31st, 2012 as open day, publication number is in the Chinese patent of CN102759260A, a kind of brown coal drying and upgrading system is disclosed, this brown coal drying and upgrading system comprises the raw coal crusher, the raw coal preheater, drying machine, initial raw coal in the high temperature upgraded coal of drying machine drying and raw coal preheater carries out the low temperature upgraded coal discharge that heat exchange forms, send into the heating unit tube bank of drying machine after the compressed machine compression of heat pump fluid, the dry initial raw coal of heat pump fluid through after enter waste gas recovery interchanger by the heating unit tube bank, compressed machine is sent into the heating unit tube bank formation closed cycle of drying machine again, the dried tail gas of drying machine also reclaims interchanger with waste gas by the road and is connected.The energy that this brown coal drying and upgrading system utilizes heat pump principle to reclaim dried tail gas is used for brown coal drying, utilize the dry rear higher upgraded coal of temperature to carry out preheating to raw coal, although reached the purpose that reduces the brown coal drying energy consumption, relatively poor to the upgrading effect of brown coal.
and for example open day is on 07 14th, 2010, publication number is in the Chinese patent of CN101776370A, a kind of method and apparatus of brown coal drying and upgrading is disclosed, this device comprises drying/sifter, preheating and drying/sifter, hotblast stove, drying drum, vibrated fluidized bed, cyclonic separator, mist eliminator and fly-ash separator, hotblast stove is connected respectively to drying drum and vibrated fluidized bed, the outlet of predrying/sifter is connected with vibrated fluidized bed with drying drum respectively, preheating and drying/sifter is divided into brown coal greatly, the small particle size two-stage, the high-temperature flue gas that produces take hotblast stove is as heating medium, after isolating oxygen with space division system, remaining low-oxygen gas is regulated flue-gas temperature, large with drying drum and vibrated fluidized bed production, the upgraded brown coal of small particle size, satisfy different Production requirements, a part is discharged tail gas and be cycled to used in preheating brown coal raw material after demist.The purpose of this device is by stage equipment, and brown coal are carried out respectively drying and upgrading by size, has eliminated the particle diameter difference and has caused the even problem of uneven drying.
Also having open day is on 02 15th, 2012, publication number is in the Chinese patent of CN102352272A, a kind of brown coal device for improving quality is disclosed, this brown coal device for improving quality is set up heat collector between kiln and tempering room, effectively control the total heat of kiln, but overall construction design is reasonable not, and is relatively poor to the upgrading effect of brown coal.
In sum, also do not have at present a kind of simple in structurely, reasonable in design, can significantly reduce the moisture in brown coal, and reduce the part ash content in brown coal, reduce the porosity of brown coal, improve the brown coal highly effective drying device for improving quality of the utility value of brown coal.
The utility model content
The purpose of this utility model is to overcome above shortcomings in prior art, and provide a kind of reasonable in design, can significantly reduce the moisture in brown coal, and the part ash content in the reduction brown coal, reduce the porosity of brown coal, improve the brown coal highly effective drying device for improving quality of the utility value of brown coal.
the technical scheme in the invention for solving the above technical problem is: the constructional feature of this brown coal highly effective drying device for improving quality is: this device comprises coal store, fuel bunker, hotblast stove, rotary-drum drier, the product storehouse, tornado dust collector, electric precipitator, induced draft fan, chimney and several pipeline, axis in described rotary-drum drier and the angle between horizontal plane are the 3-5 degree, the upper end of described rotary-drum drier is provided with the brown coal entrance, the lower end of this rotary-drum drier is provided with the brown coal outlet, the bottom of described rotary-drum drier is provided with high-temperature flue gas entry, the top of this rotary-drum drier is provided with the low-temperature flue gas outlet, be provided with smoke inlet on described tornado dust collector, preliminary exhanst gas outlet and the outlet of rough purification gas, be provided with rough purification gas entrance on described electric precipitator, exhanst gas outlet and clean gas outlet, be provided with the outlet of inlet mouth and high-temperature flue gas in described hotblast stove, described coal store is connected the brown coal entrance and is connected with rotary-drum drier, the outlet of the brown coal of this rotary-drum drier is connected with the product storehouse, the outlet of the low-temperature flue gas of described rotary-drum drier is connected smoke inlet and is connected with tornado dust collector by pipeline, the outlet of the rough purification gas of these tornado dust collector is connected rough purification gas entrance and is connected with electric precipitator by pipeline, the clean gas outlet of described electric precipitator is connected with induced draft fan by pipeline, this induced draft fan is connected with chimney by pipeline, the preliminary exhanst gas outlet of described tornado dust collector, the exhanst gas outlet of electric precipitator and fuel bunker all are connected inlet mouth and are connected with hotblast stove by pipeline, the high-temperature flue gas entry that the high-temperature flue gas outlet of this hotblast stove is connected with rotary-drum drier by pipeline connects.
As preferably, be provided with the oxygen content of smoke gas detector in the outlet of the high-temperature flue gas of hotblast stove described in the utility model.
As preferably, the two ends of rotary-drum drier described in the utility model are provided with sealing member.
As preferably, be provided with the flight structure in rotary-drum drier described in the utility model.
The utility model compared with prior art has the following advantages and effect: brown coal highly effective drying device for improving quality simple in structure, reasonable in design, easy to use, operation is reliable, the drying and upgrading successful, can significantly reduce the moisture in brown coal, and reduce the part ash content in brown coal, reduce the porosity of brown coal, improve the utility value of brown coal, environmental protection, efficient, the product after drying and upgrading does not absorb water, not easy-weathering and spontaneous combustion, calorific value is high, but large-scale application.
Brown coal highly effective drying method for upgrading adopts the high temperature anaerobic operation, has improved the drying and upgrading effect of brown coal, has avoided the burning of brown coal in cylinder; By recycling the fine coal of fly-ash separator, saved part of fuel; Flight in cylinder can improve the heat transfer effect of brown coal and flue gas; Adopt the reverse heat transfer type of convection current, improved heat transfer intensity.
The high-temperature flue gas that Combustion of Hot Air Furnace in the utility model produces is by the form of transmission of heat by convection, carries out countercurrent flow with brown coal in the rotary-drum drier of sealing, and dried brown coal are delivered in airtight product storehouse cooling by the high temperature belt conveyor.The utility model adopts the mode that reclaims fine coal in fly-ash separator to take full advantage of fuel, improves efficiency.Whole drying and upgrading device adopts two cover cleaning apparatuss, has guaranteed the feature of environmental protection of a whole set of brown coal drying and upgrading system, and the efficiency of this drying and upgrading device is high, simplicity of design, operation is reliable, the feature of environmental protection good, brown coal drying and upgrading is effective.
Description of drawings
Fig. 1 is the structural representation of brown coal highly effective drying device for improving quality in the utility model embodiment.
Fig. 2 is the structure for amplifying schematic diagram of the interior flight structure of the rotary-drum drier of the utility model embodiment.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing and by embodiment, and following examples are to explanation of the present utility model and the utility model is not limited to following examples.
Embodiment.
Referring to Fig. 1 to Fig. 2, brown coal highly effective drying device for improving quality in the present embodiment comprises coal store 1, fuel bunker 2, hotblast stove 3, rotary-drum drier 4, product storehouse 5, tornado dust collector 6, electric precipitator 7, induced draft fan 8, chimney 9 and several pipeline, wherein, be provided with sealing member 10 at the two ends of rotary-drum drier 4, the rotary-drum drier 4 in the utility model is interior can be provided with the flight structure.
Axis in rotary-drum drier 4 in the present embodiment and the angle between horizontal plane are the 3-5 degree, make rotary-drum drier 4 be ramp-like configuration, as shown in Figure 1, the left end of rotary-drum drier 4 is higher than right-hand member, the left end that is rotary-drum drier 4 is the upper end, and the right-hand member of rotary-drum drier 4 is the lower end.Be provided with the brown coal entrance in the upper end of rotary-drum drier 4, the lower end of this rotary-drum drier 4 is provided with the brown coal outlet, is provided with high-temperature flue gas entry in the bottom of rotary-drum drier 4, and the top of this rotary-drum drier 4 is provided with the low-temperature flue gas outlet.Brown coal entrance in the utility model rotary-drum drier 4, brown coal outlet, high-temperature flue gas entry, low-temperature flue gas outlet and axis are common practise to those skilled in the art.
Be provided with smoke inlet, preliminary exhanst gas outlet and the outlet of rough purification gas on tornado dust collector 6 in the present embodiment, be provided with rough purification gas entrance, exhanst gas outlet and clean gas outlet on electric precipitator 7, be provided with the outlet of inlet mouth and high-temperature flue gas in hotblast stove 3.
the brown coal entrance that coal store 1 in the present embodiment is connected with rotary-drum drier connects, connection is connected in the outlet of the brown coal of this rotary-drum drier 4 with the product storehouse, the smoke inlet that the low-temperature flue gas outlet of cylinder drier 4 is connected with tornado dust collector by pipeline connects, the rough purification gas entrance that the rough purification gas outlet of these tornado dust collector 6 is connected with electric precipitator by pipeline connects, the clean gas outlet of electric precipitator 7 is connected connection with induced draft fan by pipeline, this induced draft fan 8 is connected connection with chimney by pipeline, the preliminary exhanst gas outlet of tornado dust collector 6, the exhanst gas outlet of electric precipitator 7 is connected all the inlet mouth of being connected with hotblast stove by pipeline and is connected with fuel bunker, the outlet of the high-temperature flue gas of this hotblast stove 3 connects with high-temperature flue gas entry during rotary-drum drier is connected by pipeline.
The utility model can be provided with the oxygen content of smoke gas detector in the high-temperature flue gas outlet of hotblast stove 3.
Brown coal highly effective drying method for upgrading in the present embodiment comprises the steps.
(1) the raw material brown coal are delivered in rotary-drum drier 4 by coal store 1, and the axis in this rotary-drum drier 4 and the angle between horizontal plane are the 3-5 degree, and the raw material brown coal move from top to bottom along skewed rotary-drum drier 4.
(2) the coal-fired and fine coal that separate from tornado dust collector 6 and electric precipitator 7 from fuel bunker 2 burns in hotblast stove 3, the generation temperature is the high-temperature flue gas of 700-900 ℃, this high-temperature flue gas is as drying source, be transported in rotary-drum drier 4, and flow from the bottom up along the rotary-drum drier 4 that tilts, be used for the raw material brown coal of drying drum formula moisture eliminator 4, carry out convective heat exchange between high-temperature flue gas and raw material brown coal.
(3) after high-temperature flue gas carries out drying to the raw material brown coal, become the low-temperature flue gas that carries the fine coal in the raw material brown coal, the temperature of low-temperature flue gas is 90-120 ℃, this low-temperature flue gas is from rotary-drum drier 4 outputs, entering tornado dust collector 6 separates with electric precipitator 7, the fine coal of separating enters burning in hotblast stove 3 again, and the purified gas of separating enters chimney 9 by induced draft fan 8, finally is discharged in atmosphere.
(4) the raw material brown coal are through after the drying of high-temperature flue gas, are transported to from rotary-drum drier 4 and carry out airtight coolingly product storehouse 5, obtain the finished product brown coal after cooling.
Can recycle in the brown coal drying process and produce fine coal, reduce energy consumption; Brown coal in high-temperature flue gas and rotary-drum drier 4 adopt transmission of heat by convection, and flue gas flow direction adopts reflux type to carry out.From coal store 1 raw material brown coal to be dried out, send into rotary-drum drier 4 by rotary conveyor, the effect of flight in the revolution by rotary-drum drier 4 and cylinder makes that the raw material brown coal fully contact with the high-temperature flue gas thermal source, heat exchange.Sealing member 10 is equipped with at rotary-drum drier 4 two ends, can guarantee more effectively that the brown coal in cylinder are in the anaerobic drying regime.Rotary-drum drier 4 has the inclination angle of 3-5 degree, and the length of brown coal residence time in cylinder can realize by the velocity of rotation of regulating cylinder.
From the coal-fired of fuel bunker 2 and burn in hotblast stove 3 from tornado dust collector 6 and the isolated fine coal of electric precipitator 7, produce the high-temperature flue gas of 700-900 ℃.High-temperature flue gas enters from the lower end of rotary-drum drier 4, after carrying out convective heat exchange with brown coal in cylinder, discharges from the cylinder upper end, and flue gas enters tornado dust collector 6 and carries out dedusting, the separation that is purified in this separator of the flue gas of the overwhelming majority.Flue gas through tornado dust collector 6 initial gross separations continues to enter electric precipitator 7 separation, draws by induced draft fan 8 from electric precipitator 7 flue out, and then enters in atmosphere by chimney 9.Brown coal in the cylinder of rotary-drum drier 4 are discharged from discharge port after super-dry, by the high temperature belt conveyor, it are sent in product storehouse 5 airtight coolingly, and cooled product can carry out entrucking and take out.
High-temperature flue gas oxygen level in the present embodiment is extremely low, for guaranteeing that more effectively the brown coal in cylinder are in the anaerobic drying regime, can the oxygen content of smoke gas detector be installed in the high-temperature flue gas exit, be used for the monitoring oxygen content of smoke gas, avoid brown coal ignition in cylinder even to explode.
In addition, need to prove, the specific embodiment described in this specification sheets, the shape of its parts and components, institute's title of being named etc. can be different, and the above content described in this specification sheets is only to the explanation of the utility model structure example.All equivalence variation or simple change of doing according to the described structure of the utility model patent design, feature and principle are included in the protection domain of the utility model patent.The utility model person of ordinary skill in the field can make various modifications or replenishes or adopt similar mode to substitute described specific embodiment; only otherwise depart from structure of the present utility model or surmount this scope as defined in the claims, all should belong to protection domain of the present utility model.
Claims (4)
1. brown coal highly effective drying device for improving quality, it is characterized in that: this device comprises coal store, fuel bunker, hotblast stove, rotary-drum drier, the product storehouse, tornado dust collector, electric precipitator, induced draft fan, chimney and several pipeline, axis in described rotary-drum drier and the angle between horizontal plane are the 3-5 degree, the upper end of described rotary-drum drier is provided with the brown coal entrance, the lower end of this rotary-drum drier is provided with the brown coal outlet, the bottom of described rotary-drum drier is provided with high-temperature flue gas entry, the top of this rotary-drum drier is provided with the low-temperature flue gas outlet, be provided with smoke inlet on described tornado dust collector, preliminary exhanst gas outlet and the outlet of rough purification gas, be provided with rough purification gas entrance on described electric precipitator, exhanst gas outlet and clean gas outlet, be provided with the outlet of inlet mouth and high-temperature flue gas in described hotblast stove, described coal store is connected the brown coal entrance and is connected with rotary-drum drier, the outlet of the brown coal of this rotary-drum drier is connected with the product storehouse, the outlet of the low-temperature flue gas of described rotary-drum drier is connected smoke inlet and is connected with tornado dust collector by pipeline, the outlet of the rough purification gas of these tornado dust collector is connected rough purification gas entrance and is connected with electric precipitator by pipeline, the clean gas outlet of described electric precipitator is connected with induced draft fan by pipeline, this induced draft fan is connected with chimney by pipeline, the preliminary exhanst gas outlet of described tornado dust collector, the exhanst gas outlet of electric precipitator and fuel bunker all are connected inlet mouth and are connected with hotblast stove by pipeline, the high-temperature flue gas entry that the high-temperature flue gas outlet of this hotblast stove is connected with rotary-drum drier by pipeline connects.
2. brown coal highly effective drying device for improving quality according to claim 1, is characterized in that: be provided with the oxygen content of smoke gas detector in the high-temperature flue gas outlet of described hotblast stove.
3. brown coal highly effective drying device for improving quality according to claim 1, it is characterized in that: the two ends of described rotary-drum drier are provided with sealing member.
4. brown coal highly effective drying device for improving quality according to claim 1, is characterized in that: be provided with the flight structure in described rotary-drum drier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705665 CN203021524U (en) | 2012-12-19 | 2012-12-19 | Efficient drying and quality lifting device for brown coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220705665 CN203021524U (en) | 2012-12-19 | 2012-12-19 | Efficient drying and quality lifting device for brown coal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203021524U true CN203021524U (en) | 2013-06-26 |
Family
ID=48645519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220705665 Expired - Lifetime CN203021524U (en) | 2012-12-19 | 2012-12-19 | Efficient drying and quality lifting device for brown coal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203021524U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013615A (en) * | 2012-12-19 | 2013-04-03 | 华电电力科学研究院 | Efficient drying and quality-improving device and method for brown coal |
| CN108679963A (en) * | 2018-08-09 | 2018-10-19 | 浙江天禄环境科技有限公司 | A kind of coal using flue gas dries dedusting and feed system |
| CN110862835A (en) * | 2019-12-03 | 2020-03-06 | 嘉禾聚能（天津）科技有限公司 | System for producing fuel gas |
-
2012
- 2012-12-19 CN CN 201220705665 patent/CN203021524U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103013615A (en) * | 2012-12-19 | 2013-04-03 | 华电电力科学研究院 | Efficient drying and quality-improving device and method for brown coal |
| CN108679963A (en) * | 2018-08-09 | 2018-10-19 | 浙江天禄环境科技有限公司 | A kind of coal using flue gas dries dedusting and feed system |
| CN110862835A (en) * | 2019-12-03 | 2020-03-06 | 嘉禾聚能（天津）科技有限公司 | System for producing fuel gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103013615A (en) | Efficient drying and quality-improving device and method for brown coal | |
| CN203116491U (en) | Lignite water take-out lignite efficient burning system | |
| WO2016155267A1 (en) | Process and system for waste-heat staged recycling and pollutant emission reduction of sintering flue gases | |
| CN101975388B (en) | Biomass boiler system capable of saving energy and reducing emission | |
| CN203116490U (en) | Brown coal drying and combusting system with gas exhaust heat energy and water recovery function | |
| CN102329628B (en) | Large-size low-temperature destructive distillation system for low-order lignite | |
| CN102661666A (en) | Tail gas utilization method and tail gas utilization system of rotary lime kiln | |
| CN101812310A (en) | High-efficiency lignite low-temperature dry distillation quality-enhancing process by using dry distillation coal gas as heat-carrying medium | |
| CN102258923A (en) | Method for recycling and reusing tail gas of calcium carbide furnace | |
| CN201819190U (en) | Energy saving and emission reduction biomass boiler system | |
| CN203021524U (en) | Efficient drying and quality lifting device for brown coal | |
| CN108240619A (en) | A kind of flue gas recirculation system using hi-temp hi-effective cyclone separator | |
| CN103756698B (en) | Low-grade coal gas flow injection dense-phase quick dry distillation upgrading method and system | |
| CN205174413U (en) | Boiler smoke whirlwind separation recycle device | |
| CN203212525U (en) | Gas-solid combined biomass partition speed control pyrolysis system | |
| CN104132362A (en) | Open powder making steam warm air type boiler unit and power generation system thereof | |
| CN104566431B (en) | Low-temperature drying and coal conveying integrated equipment for raw coal | |
| CN103961955B (en) | A kind of cleaner unit pre-heating technique for filtering flammable dusty gas | |
| CN202547358U (en) | Tail gas utilization system for lime rotary kiln | |
| CN203116450U (en) | Low-order coal drying upgrading equipment | |
| CN102914170B (en) | Device and method for performing hot air sintering by reusing sintering high-temperature flue gas | |
| CN103062999B (en) | Low-rank coal drying and upgrading unit | |
| CN104848684B (en) | A kind of double discharging powder dynamic calcining furnaces | |
| CN204786512U (en) | Unit pulverized -coal system with coal drying and water recovery function | |
| CN104132361A (en) | Open powder making steam warm air type boiler unit and power generation system thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Hangzhou City, Zhejiang Province, 310030 Xihu District science and Technology Park of West Lake Park Road, No. 10 Patentee after: HUADIAN ELECTRIC POWER RESEARCH INSTITUTE Co.,Ltd. Address before: Hangzhou City, Zhejiang Province, 310030 Xihu District science and Technology Park of West Lake Park Road, No. 10 Patentee before: Huadian Electric Power Research Institute |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130626 |