CN204154090U - brown coal drying device - Google Patents
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- CN204154090U CN204154090U CN201420547022.5U CN201420547022U CN204154090U CN 204154090 U CN204154090 U CN 204154090U CN 201420547022 U CN201420547022 U CN 201420547022U CN 204154090 U CN204154090 U CN 204154090U
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Abstract
The utility model relates to a kind of brown coal drying device, and it comprises conveyer system of raw coal, steam source system, drying system and Wet-type electric dust removal system; Described drying system comprises the steam dryer with feeding mouth, discharging opening, air intake, venthole and steam drain, described feeding mouth is connected with described conveyer system of raw coal to receive described brown coal particle, described air intake is connected to receive described drying medium with described steam source system, exported by described discharging opening through described drying medium dried brown coal particle, the drying medium after brown coal particle carries out dry process is exported by described venthole; Wet-type electric dust removal system is connected with described steam drain, to carry out dedusting, condensation, filtration and recovery to the mixture coming from coal dust that drying system produces in dry run and humid gas.While the utility model achieves and carries out drying to brown coal, carrying out dedusting and recovery by steaming the moisture be evaporated in a large number in brown coal, improve resource utilization.
Description
Technical field
The utility model belongs to technical field of power generation, is specifically related to a kind of brown coal drying device.
Background technology
Coal is the main primary energy of China, accounts for 78.6% of total output of primary energy.Along with the reserves of fat coal (bituminous coal and anthracite) are gradually reducing and rise in price, the coal of low cost is badly in need of in electricity power enterprise.Brown coal are the relatively low resources of a kind of high volatile, high-moisture, high ash content, low heat value, low ash smelting point, utilization rate, are directly used in economics of power generation poor.Generation current enterprise is cognitive increases drying equipment in brown coal power plant, and carry out drying process to entering the brown coal before coal pulverizer, removing its most of moisture is a kind of cost-effective scheme.
But drying machine of the prior art only carries out drying to entering the brown coal before coal pulverizer, the steam produced in dry run is disregarded, and causes the wasting of resources.
Summary of the invention
In order to solve the problem, the utility model provides a kind of brown coal drying device, and its technical scheme comprises: conveyer system of raw coal, steam source system, drying system and Wet-type electric dust removal system; Described conveyer system of raw coal is used for raw coal to be processed into brown coal particle, and is delivered to described drying system; Described steam source system is used for drying medium to be delivered to described drying system; Described drying system is used for utilizing described drying medium to carry out drying to described brown coal particle, described drying system comprises the steam dryer with feeding mouth, discharging opening, air intake, venthole and steam drain, described feeding mouth is connected with described conveyer system of raw coal to receive described brown coal particle, described air intake is connected to receive described drying medium with described steam source system, exported by described discharging opening through described drying medium dried brown coal particle, the drying medium after brown coal particle carries out dry process is exported by described venthole; Described Wet-type electric dust removal system is connected with described steam drain, to carry out dedusting, condensation, filtration and recovery to the mixture coming from coal dust that described drying system produces in dry run and humid gas.
In brown coal drying device as above, preferably, described steam source system comprises: sub-cylinder; The steam ports that enters of described sub-cylinder receives the steam coming from boiler and produce, and the venthole of described sub-cylinder is connected with by steam Transportation extremely described steam dryer with the air intake of described steam dryer.
In brown coal drying device as above, preferably, the steam coming from boiler generation entering steam ports reception of described sub-cylinder is overheated saturated vapor; The pressure that described sub-cylinder is delivered to the steam of described steam dryer through the venthole of described sub-cylinder is 0.45MPa (G), and temperature is 170 ~ 180 DEG C.
In brown coal drying device as above, preferably, described steam dryer comprises: central shaft driven tubular type revolution steam dryer and carrying roller transmission tubular type revolution steam dryer; The quantity of described central shaft driven tubular type revolution steam dryer and carrying roller transmission tubular type revolution steam dryer is one; The air intake of described central shaft driven tubular type revolution steam dryer is connected with the same venthole of described sub-cylinder with the carrying roller transmission tubular type revolution air intake of steam dryer.
In brown coal drying device as above, preferably, described conveyer system of raw coal comprises: run coal bin, the first insertion plate door, inclined conveyer, disintegrating machine, bucket elevator, broken coal storehouse, the second insertion plate door, electronic-weighing feeder and embedded scraper transporter, be placed in the raw coal in described run coal bin, described inclined conveyer is fallen into after the first insertion plate door through being arranged on the outlet of described run coal bin regulates coal-supplying amount, be delivered to described disintegrating machine through described inclined conveyer again and carry out fragmentation, raw coal after fragmentation is delivered to described broken coal storehouse through described bucket elevator, brown coal particle is obtained through the process of described broken coal storehouse, second insertion plate door of described brown coal particle through being arranged on the outlet of described broken coal storehouse enters described electronic-weighing feeder, described embedded scraper transporter is entered again after described electronic-weighing feeder is weighed, exported by the discharging opening of the described embedded scraper transporter be connected with the feeding mouth of described steam dryer.
In brown coal drying device as above, preferably, the blast injection joint with compressed air communication is provided with in described broken coal storehouse.
In brown coal drying device as above, preferably, described Wet-type electric dust removal system comprises: wet electrical dust precipitator, filter, pulverized coal recovery device and apparatus for recovering, described wet electrical dust precipitator is used for carrying out dedusting to the mixture of coal dust and humid gas, its import is connected with the steam drain of described steam dryer, with the mixture of the coal dust and humid gas that receive the discharge of described steam drain, the coal dust obtained after dedusting is expelled to the described pulverized coal recovery device for collecting coal dust by its first outlet, humid gas after dedusting is delivered to described filter by condenser pipe by its second outlet, in described condenser pipe, carry out cooling become cooling water, water after described filtration devices delivers to described apparatus for recovering to carry out recycling by the water out of described filter.
In brown coal drying device as above, preferably, described brown coal drying device also comprises: the Technics in Condensate System with condensate drum, condensate pump, jet pump and expansion blowdown drum; The entrance of described condensate drum is communicated with the venthole of described steam dryer, first outlet of described condensate drum is connected with the entrance of described condensate pump, first entrance of described jet pump and second of described condensate drum exports and is connected, second entrance of described jet pump is connected with described condensate water delivery side of pump, and described injection delivery side of pump is connected with the import of described expansion blowdown drum.
In brown coal drying device as above, preferably, between the entrance and the venthole of described steam dryer of described condensate drum, be provided with the drain valve for steam regulation pressure.
In brown coal drying device as above, preferably, described brown coal drying device also comprises: rotatory feeder valve, electronic-weighing belt feeder and brown coal retracting device; The charging aperture of described rotatory feeder valve is connected to receive the brown coal particle that described steam dryer is discharged with the discharging opening of described steam dryer; Described electronic-weighing belt feeder is arranged at the below of the discharging opening of described rotatory feeder valve, for by described brown coal particle transport to described brown coal retracting device.
The beneficial effect that the technical scheme that the utility model embodiment provides is brought is:
(1), this brown coal drying device is using overheated saturated vapor as thermal source; with steam dryer; especially tubular type rotary dryer is as heat exchange instrument; contact drying is carried out to brown coal particle; in dry run, nitrogen protection is passed into dryer inner; can effectively prevent lignite dust from exploding and spontaneous combustion, this brown coal drying device has high reliability and high security.
(2), heat exchange adjustment is carried out by Technics in Condensate System (condensate recovery device) at steam heat-exchanging end in this brown coal drying device, overheated saturated vapor can be made to complete abundant heat exchange, overheated saturated vapor becomes saturation water after abundant heat exchange, steam heat is fully discharged, and improves drying machine (steam dryer) heat exchange efficiency.
(3), this brown coal drying device adopts overheated saturated vapor as thermal source, sufficient heat exchange heat can be provided, drying machine (steam dryer), especially tubular type rotary dryer has enough heat exchange areas, after can making the brown coal drying of initial water content 35%, water content control is within 10%, and drying system has good drying capacity.
(4), in this brown coal drying device, main drying equipment adopts the pipes type steaming drying machine of two different drive mechanisms, these two drying machines can control to run simultaneously and also can individually run, can effective ratio compared with the drying efficiency of different structure form drying machine and ruuning situation, can be the experience that the application of pipe drier heavy industrialization provides reference.
(5), apparatus for recovering is set in this brown coal drying device, can by evaporate in brown coal particle water vapour condensation after dedusting, filtration, can utilize after collection.Namely this brown coal drying device is while carrying out drying to brown coal, the moisture be evaporated in a large number in brown coal is carried out dedusting and recovery (possess drying brown coal and reclaim water function in brown coal), promote that water resource recycles, for raising resource utilization, alleviate Chinese energy anxiety significant.And the exploitation of brown coal drying and upgrading Technology and equipment is clean and effectively utilize the key of brown coal, as the important component part of national clean coal technology, for the development promoting China's clean coal technology, very profound significance will be had.
Accompanying drawing explanation
The structural representation of a kind of brown coal drying device that Fig. 1 provides for the utility model embodiment.
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the utility model is described in further details.
See Fig. 1, the utility model embodiment provides a kind of brown coal drying device, it comprises: for raw coal is processed into brown coal particle conveyer system of raw coal, be used for carrying the steam source system of drying medium, be used for utilizing drying medium to carry out dry drying system to brown coal particle and the mixture of the coal dust that produces drying system and humid gas carries out the Wet-type electric dust removal system of dedusting, condensation, filtration and recovery, drying system is connected respectively with conveyer system of raw coal and steam source system, is also connected with Wet-type electric dust removal system.It should be noted that the drying medium carried in steam source system is steam, be preferably saturated vapours.
Wherein, drying system comprises steam dryer, steam dryer has feeding mouth, discharging opening, air intake, venthole and steam drain, feeding mouth is connected with conveyer system of raw coal to receive brown coal particle, air intake is connected with steam source system to receive drying medium (steam), the dried brown coal particle of drying medium is exported by discharging opening, drying medium enters in steam dryer by air intake, drying medium after brown coal particle carries out dry process is exported by venthole, the coal dust produced in dry run and the mixture of humid gas are discharged by steam drain.Steam dryer is preferably pipes type steaming rotary dryer, such as: central shaft driven tubular type revolution steam dryer 8, carrying roller transmission tubular type revolution steam dryer 9 etc., during application, drying medium enters drying tube (heat exchanger tube) in the body of steam dryer outward by air intake, brown coal particle is entered in the drying tube in the body of steam dryer by charging aperture, that is the version walking vapour outside coal pipe pipe is walked in pipe, brown coal particle enters in drying tube and carries out indirect heat exchange with drying medium, indirect heat exchange is completed in drying tube internal flow process, namely drying medium and brown coal particle are indirect contact heat exchanger, discharged by venthole after heat exchange.Further preferably, the quantity of steam dryer is two, a central shaft driven tubular type revolution steam dryer and a carrying roller transmission tubular type revolution steam dryer, both models can be ZZG1 × 8 type pipes type steaming drying machines, both diameters are 1m, length is 8m, and that is, the main drying equipment (steam dryer) in drying system can adopt the pipes type steaming rotary dryer of two kinds of different structure forms.Two can be started in use simultaneously, can also individually start.In order to effectively prevent lignite dust from exploding and spontaneous combustion, improving high reliability and the high security of brown coal device, being also filled with nitrogen in the drying tube in the body of drying machine, thus realizing the protection to brown coal particle in dry run.Dried brown coal particle is exported by the discharging opening of steam dryer, send into electronic-weighing belt feeder 16 (or belt conveyer or drag conveyor) through rotatory feeder valve 11 (rotary feeder), then send into brown coal retracting device 22 (receipts device for coal).
Particularly, steam source system comprises sub-cylinder (steam cylinder) 10, it for the steam that produced by boiler along separate routes, then be delivered in steam dryer, and have into steam ports and venthole, enter steam ports and receive the steam coming from boiler (can be oil burning boiler or coal-burning boiler or gas fired-boiler) and produce, venthole be connected with the air intake of steam dryer with by steam Transportation to steam dryer.That is steam source system provides drying medium for drying system, the drying medium that boiler (can be oil burning boiler or coal-burning boiler or gas fired-boiler) produces delivers to sub-cylinder by jet chimney, by sub-cylinder by steam along separate routes, and then deliver in steam dryer through pipeline and think that steam dryer provides the drying medium of certain pressure and flow.In order to provide sufficient heat exchange heat to steam dryer, drying medium is preferably overheated saturated vapor, further, the steam pressure being delivered to (for steam dryer provides) in steam dryer is 0.45MPa (G), and temperature is 170 ~ 180 DEG C.In reality, the quantity of sub-cylinder venthole is multiple.When the quantity of steam dryer is when centered by two: one, through-drive tubular type revolution steam dryer and one are for carrying roller transmission tubular type revolution steam dryer, the air intake of air intake and the carrying roller transmission tubular type revolution steam dryer of central shaft driven tubular type revolution steam dryer is preferably connected with the same venthole of sub-cylinder, thus can effective ratio compared with the drying efficiency of different structure form drying machine and ruuning situation.Figure 1 shows that the structural representation of brown coal drying device when steam dryer quantity is two.
Conveyer system of raw coal can by raw coal Particle Breakage evenly to meet the requirement of drying system to particle, and feeding mouth raw coal particle being transported to steam dryer is to enter in steam dryer, such as by water content 35 ~ 45% raw coal sieving approach be the brown coal particle that diameter is less than 10mm.This conveyer system of raw coal comprises: run coal bin 1, inclined conveyer 2, disintegrating machine 3, bucket elevator 4, broken coal storehouse 5, embedded scraper transporter 7.Raw coal is transported in run coal bin 1 by loading machine, through the outlet blanking of run coal bin 1 to inclined conveyer, disintegrating machine 3 is entered continuously, equably again through inclined conveyer 2, coal after disintegrating machine 3 fragmentation enters bucket elevator 4, and be transported to broken coal storehouse 5, export the broken coal exported through broken coal storehouse 5 and fall into embedded scraper transporter 7, by embedded scraper transporter 7, broken coal (brown coal particle) is transported to the feeding mouth of steam dryer to enter in steam dryer heat exchanger tube.In order to carry out fragmentation by more effective for raw coal, disintegrating machine 3 is preferably fine crusher.
In order to adjust coal-supplying amount at any time, conveyer system of raw coal also comprises the first insertion plate door being arranged on run coal bin 1 exit, and preferably the first insertion plate door is manual inserting plate door; In order to Real-Time Monitoring raw coal quantity delivered, conveyer system of raw coal also comprises the electronic-weighing feeder 6 being arranged at outlet below, broken coal storehouse 5, and the brown coal particle being exported output by broken coal storehouse 5 enters embedded scraper transporter 7 again after electronic-weighing feeder 6 is weighed.Conveyer system of raw coal also comprises the second insertion plate door being arranged on exit, broken coal storehouse 5, and preferably the second insertion plate door is electronic insertion plate door, and the brown coal particle being exported output by broken coal storehouse 5 enters electronic-weighing feeder 6 through the second insertion plate door, sends into embedded scraper transporter 7.The situation that the circulation of brown coal particle is smooth or block is there is in order to prevent broken coal storehouse 5, the blast injection joint of (broken coal storehouse is built-in) and compressed air communication is provided with in broken coal storehouse 5, namely when the situation that broken coal storehouse 5 occurs that brown coal circulation is smooth or block, by opening blast injection joint to spray the mobility that compressed air improves brown coal in broken coal storehouse, the circulation of brown coal particle or stopping state in reality, can be monitored by the induction installation that broken coal storehouse 5 is built-in; In broken coal storehouse, the jet-sub of built-in low pressure steam for fire xtinguishing and low pressure anti-spontaneous combustion nitrogen jet joint are to prevent lignite dust from exploding and nature, thus improve reliability and the security of brown coal drying device.
Wet-type electric dust removal system comprises: wet electrical dust precipitator 12, filter 14, pulverized coal recovery device 21 and apparatus for recovering 15.Wet electrical dust precipitator 12 is for carrying out dedusting to the mixture of coal dust and humid gas, its import is connected with the steam drain of steam dryer, with the mixture of the coal dust and humid gas that receive steam drain discharge, the coal dust obtained after dedusting is expelled to pulverized coal recovery device 21 to collect coal dust by its first outlet, humid gas after dedusting is delivered to filter 14 by condenser pipe by its second outlet, in condenser pipe, carry out cooling become cooling water, water after filtration after device 14 filtration carries out recycling by apparatus for recovering 15, the water that can also reclaim apparatus for recovering 15 collects recycling after doing further sedimentation filtration process, the water of this recovery can be used as water for industrial use.In order to the mixture being beneficial to coal dust and humid gas enters in wet electrical dust precipitator 12, between wet electrical dust precipitator 12 and the steam drain of steam dryer, be provided with air-introduced machine 13.
In order to avoid the drying medium after heat exchange directly enters in atmospheric environment, brown coal drying device also comprises: Technics in Condensate System, and it has condensate drum 17, condensate pump (condensate pump) 18, jet pump 19 and expansion blowdown drum 20.The entrance of condensate drum 17 is communicated with the venthole of steam dryer by condensate line, entrance and first outlet be arranged at below condensate drum 17 of condensate pump 18, first entrance and second outlet be positioned at above condensate drum 17 of jet pump 19, second entrance of jet pump 19 and the outlet of condensate pump 18, the entrance of expansion blowdown drum 20 and the outlet of jet pump 19, export exhaust steam to enter air by first of expansion blowdown drum 20, discharge water to enter Xia Shui by the second outlet of expansion blowdown drum 20.During application, the steam completing abundant heat exchange in steam dryer enters condensate line, become condensate liquid, namely low pressure cold lime set (enters the overheated saturated vapor in drying machine, saturation water is become) after abundant heat exchange, then condensate drum 17 is entered, carbonated drink pressurization in condensate drum 17 is led to jet pump 19 by condensate pump 18, under the effect of jet pump 19, the carbonated drink in condensate drum 17 is sent into expansion blowdown drum 20, after expansion blowdown drum 20 processes, discharge of steam is to air, and water enters lower water.
Carry out heat exchange adjustment by condensate recovery device at steam heat-exchanging end in system, overheated saturated vapor can be made to complete abundant heat exchange, and overheated saturated vapor becomes saturation water after abundant heat exchange, and steam heat is fully discharged, and improves drying machine heat exchange efficiency;
In order to ensure steam at utmost heat release in steam dryer, between the entrance and the venthole of steam dryer of condensate drum 17, drain valve is set, and then regulable control is carried out to steam pressure, thus steam heat is fully discharged, improve steam dryer heat exchange efficiency.
Below the use procedure of the brown coal drying device that the utility model provides is described in detail:
In coal yard, raw coal is transported to run coal bin 1 by charging appliance, by handling the manual inserting plate door of run coal bin 1 bottom, control raw coal and fall to inclined conveyer 2, raw coal is sent into disintegrating machine 3 by inclined conveyer 2, disintegrating machine 3 is by granularity size required by brown coal Particle Breakage to drying machine, broken good brown coal particle enters bucket elevator 4, and enter broken coal storehouse 5 through bucket elevator, broken coal prevents coal bunker blocking by blowing pressurized air in storehouse;
In brown coal drying device, trunk dry equipment center shaft type tubular type rotary dryer 8 and roller-type tubular type rotary dryer 9 start and dally, the overheated saturated vapor carrying out spontaneous combustion coal (fuel oil, combustion gas) boiler enters sub-cylinder 10, by controlling sub-cylinder pressure versus flow, control overheated saturated vapor and enter drying machine 8 and 9, carry out unloaded preheating;
The preheating of brown coal drying device complete stable after, the brown coal particle controlled in broken coal storehouse 5 by electronic insertion plate door (or manually-operated gate) enters electronic-weighing feeder 6, and electronic-weighing feeder 6 can Real-Time Monitoring raw coal quantity delivered; Brown coal particle enters embedded scraper transporter 7 through electronic-weighing feeder 6, and then enters the feed arrangement of drying machine 8,9, enters drying machine internal body and carries out heat exchange; Dry complete brown coal particle enters electronic-weighing belt feeder 16 through rotatory feeder valve 11, finally enters brown coal retracting device 20;
The coal dust produced in brown coal drying process and humid gas mixture enter wet electrical dust precipitator 12 under the effect of centrifugal blower (air-introduced machine) 13, the humid gas evaporated in dust and brown coal enters filter 14 after cooling-sedimentation, coal dust is filtered rear collection, water after filtration enters apparatus for recovering, after further sedimentation filtration process, collect recycling, this part water can be used as water for industrial use after filtering.
This brown coal drying device can be used for carrying out drying process and constituent analysis (testing with half industrialization brown coal drying and upgrading process unit) to colliery, thermal power plant brown coal used, its coal for different regions is helped to formulate different drying sides, can efficient solution to determine the work of variety classes brown coal drying process test research, Scheme Security is reasonable, technically reliable.
In sum, the beneficial effect of the utility model embodiment is as follows:
(1), this brown coal drying device is using overheated saturated vapor as thermal source; with steam dryer; especially tubular type rotary dryer is as heat exchange instrument; contact drying is carried out to brown coal particle; in dry run, nitrogen protection is passed into dryer inner; can effectively prevent lignite dust from exploding and spontaneous combustion, this brown coal drying device has high reliability and high security.
(2), heat exchange adjustment is carried out by Technics in Condensate System (condensate recovery device) at steam heat-exchanging end in this brown coal drying device, overheated saturated vapor can be made to complete abundant heat exchange, overheated saturated vapor becomes saturation water after abundant heat exchange, steam heat is fully discharged, and improves drying machine (steam dryer) heat exchange efficiency.
(3), this brown coal drying device adopts overheated saturated vapor as thermal source, sufficient heat exchange heat can be provided, drying machine (steam dryer), especially tubular type rotary dryer has enough heat exchange areas, after can making the brown coal drying of initial water content 35%, water content control is within 10%, and drying system has good drying capacity.
(4), in this brown coal drying device, main drying equipment adopts the pipes type steaming drying machine of two different drive mechanisms, these two drying machines can control to run simultaneously and also can individually run, can effective ratio compared with the drying efficiency of different structure form drying machine and ruuning situation, can be the experience that the application of pipe drier heavy industrialization provides reference.
(5), apparatus for recovering is set in this brown coal drying device, can by evaporate in brown coal particle water vapour condensation after dedusting, filtration, can utilize after collection.Namely this brown coal drying device is while carrying out drying to brown coal, the moisture be evaporated in a large number in brown coal is carried out dedusting and recovery (possess drying brown coal and reclaim water function in brown coal), promote that water resource recycles, for raising resource utilization, alleviate Chinese energy anxiety significant.And the exploitation of brown coal drying and upgrading Technology and equipment is clean and effectively utilize the key of brown coal, as the important component part of national clean coal technology, for the development promoting China's clean coal technology, very profound significance will be had.
As known by the technical knowledge, the utility model can be realized by other the embodiment not departing from its Spirit Essence or essential feature.Therefore, above-mentioned disclosed embodiment, with regard to each side, all just illustrates, is not only.Allly all to be included in the utility model within the scope of the utility model or being equal to the change in scope of the present utility model.
Claims (10)
1. a brown coal drying device, is characterized in that, described brown coal drying device comprises: conveyer system of raw coal, steam source system, drying system and Wet-type electric dust removal system;
Described conveyer system of raw coal is used for raw coal to be processed into brown coal particle, and is delivered to described drying system;
Described steam source system is used for drying medium to be delivered to described drying system;
Described drying system is used for utilizing described drying medium to carry out drying to described brown coal particle, described drying system comprises the steam dryer with feeding mouth, discharging opening, air intake, venthole and steam drain, described feeding mouth is connected with described conveyer system of raw coal to receive described brown coal particle, described air intake is connected to receive described drying medium with described steam source system, exported by described discharging opening through described drying medium dried brown coal particle, the drying medium after brown coal particle carries out dry process is exported by described venthole;
Described Wet-type electric dust removal system is connected with described steam drain, to carry out dedusting, condensation, filtration and recovery to the mixture coming from coal dust that described drying system produces in dry run and humid gas.
2. brown coal drying device according to claim 1, is characterized in that, described steam source system comprises: sub-cylinder;
The steam ports that enters of described sub-cylinder receives the steam coming from boiler and produce, and the venthole of described sub-cylinder is connected with by steam Transportation extremely described steam dryer with the air intake of described steam dryer.
3. brown coal drying device according to claim 2, is characterized in that, the steam coming from boiler generation entering steam ports reception of described sub-cylinder is overheated saturated vapor;
The pressure that described sub-cylinder is delivered to the steam of described steam dryer through the venthole of described sub-cylinder is 0.45MPa (G), and temperature is 170 ~ 180 DEG C.
4. brown coal drying device according to claim 2, is characterized in that, described steam dryer comprises: central shaft driven tubular type revolution steam dryer and carrying roller transmission tubular type revolution steam dryer;
The quantity of described central shaft driven tubular type revolution steam dryer and carrying roller transmission tubular type revolution steam dryer is one;
The air intake of described central shaft driven tubular type revolution steam dryer is connected with the same venthole of described sub-cylinder with the carrying roller transmission tubular type revolution air intake of steam dryer.
5. brown coal drying device according to claim 1, it is characterized in that, described conveyer system of raw coal comprises: run coal bin, the first insertion plate door, inclined conveyer, disintegrating machine, bucket elevator, broken coal storehouse, the second insertion plate door, electronic-weighing feeder and embedded scraper transporter;
Be placed in the raw coal in described run coal bin, described inclined conveyer is fallen into after the first insertion plate door through being arranged on the outlet of described run coal bin regulates coal-supplying amount, be delivered to described disintegrating machine through described inclined conveyer again and carry out fragmentation, raw coal after fragmentation is delivered to described broken coal storehouse through described bucket elevator, brown coal particle is obtained through the process of described broken coal storehouse, second insertion plate door of described brown coal particle through being arranged on the outlet of described broken coal storehouse enters described electronic-weighing feeder, described embedded scraper transporter is entered again after described electronic-weighing feeder is weighed, exported by the discharging opening of the described embedded scraper transporter be connected with the feeding mouth of described steam dryer.
6. brown coal drying device according to claim 5, is characterized in that, is provided with the blast injection joint with compressed air communication in described broken coal storehouse.
7. brown coal drying device according to claim 1, is characterized in that, described Wet-type electric dust removal system comprises: wet electrical dust precipitator, filter, pulverized coal recovery device and apparatus for recovering;
Described wet electrical dust precipitator is used for carrying out dedusting to the mixture of coal dust and humid gas, its import is connected with the steam drain of described steam dryer, with the mixture of the coal dust and humid gas that receive the discharge of described steam drain, the coal dust obtained after dedusting is expelled to the described pulverized coal recovery device for collecting coal dust by its first outlet, humid gas after dedusting is delivered to described filter by condenser pipe by its second outlet, in described condenser pipe, carry out cooling become cooling water, water after described filtration devices delivers to described apparatus for recovering to carry out recycling by the water out of described filter.
8. brown coal drying device according to claim 1, is characterized in that, described brown coal drying device also comprises: the Technics in Condensate System with condensate drum, condensate pump, jet pump and expansion blowdown drum;
The entrance of described condensate drum is communicated with the venthole of described steam dryer, first outlet of described condensate drum is connected with the entrance of described condensate pump, first entrance of described jet pump and second of described condensate drum exports and is connected, second entrance of described jet pump is connected with described condensate water delivery side of pump, and described injection delivery side of pump is connected with the import of described expansion blowdown drum.
9. brown coal drying device according to claim 8, is characterized in that, the porch of described condensate drum is provided with the drain valve for steam regulation pressure.
10. brown coal drying device according to claim 1, is characterized in that, described brown coal drying device also comprises: rotatory feeder valve, electronic-weighing belt feeder and brown coal retracting device;
The charging aperture of described rotatory feeder valve is connected to receive the brown coal particle that described steam dryer is discharged with the discharging opening of described steam dryer;
Described electronic-weighing belt feeder is arranged at the below of the discharging opening of described rotatory feeder valve, for by described brown coal particle transport to described brown coal retracting device.
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| CN201420547022.5U CN204154090U (en) | 2014-09-23 | 2014-09-23 | brown coal drying device |
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| CN201420547022.5U CN204154090U (en) | 2014-09-23 | 2014-09-23 | brown coal drying device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024081A (en) * | 2017-03-27 | 2017-08-08 | 辽宁科技大学 | A kind of brown coal drying device and method |
| CN107227189A (en) * | 2017-07-11 | 2017-10-03 | 云南国能清洁能源有限公司 | The steam-cured processing system of lignite |
| CN107300297A (en) * | 2017-08-10 | 2017-10-27 | 阜阳华润电力有限公司 | A kind of coal slime drying system |
-
2014
- 2014-09-23 CN CN201420547022.5U patent/CN204154090U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107024081A (en) * | 2017-03-27 | 2017-08-08 | 辽宁科技大学 | A kind of brown coal drying device and method |
| CN107227189A (en) * | 2017-07-11 | 2017-10-03 | 云南国能清洁能源有限公司 | The steam-cured processing system of lignite |
| CN107300297A (en) * | 2017-08-10 | 2017-10-27 | 阜阳华润电力有限公司 | A kind of coal slime drying system |
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