CN201748770U - Brown coal drying and quality-improving system - Google Patents

Brown coal drying and quality-improving system Download PDF

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Publication number
CN201748770U
CN201748770U CN2010202850760U CN201020285076U CN201748770U CN 201748770 U CN201748770 U CN 201748770U CN 2010202850760 U CN2010202850760 U CN 2010202850760U CN 201020285076 U CN201020285076 U CN 201020285076U CN 201748770 U CN201748770 U CN 201748770U
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China
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coal
machine
sealing
air
drying
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CN2010202850760U
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Chinese (zh)
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朱绍辉
田尚锋
陈绪庆
马军
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泰安立人选煤工程有限公司
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Abstract

The utility model relates to a brown coal drying and quality-improving system, which has advantages of compact and reasonable process arrangement, large processing capacity, high thermal efficiency, small occupation area, less investment, safe and reliable utilization, energy conservation and environmental protection. The whole system is of a totally-enclosed and non-oxidation negative pressure type. The system comprises a high-temperature smoke heat source device, and is characterized in that the smoke outlet of the high-temperature smoke heat source device is connected to the air inlet of a roller drying machine with multiple rolling processes; the material feeding end of the roller drying machine with multiple rolling processes is connected to a material feeding device, and the material discharge end cooperates with a product transport device; the gas outlet is connected to an cyclone dedusting device; the outlet of the cyclone dedusting device is connected to a wet dust collector.

Description

A kind of brown coal drying and upgrading system

Technical field

The utility model relates to a kind of brown coal drying and upgrading system.

Background technology:

Explored lignite resource is very abundant in China and the world wide, reserves are big, but grade is lower, shortcomings such as moisture height (usually about 30%-50%), ash content height, volatile matter height, burning-point is low, calorific value is low, so high moisture has seriously restricted the development and use of brown coal, and especially the moisture height has seriously reduced the caloric value of brown coal.Will be applied to brown coal industries such as chemical industry, electric power, metallurgy today in great shortage at the energy, must take off redundant moisture, improves caloric value, not only can improve caloric value behind the brown coal drying and dehydrating, also helps storage, dress, fortune.At present, at home and abroad Jue Dabufen brown coal drying ubiquity technology is aging, and equipment is outmoded, and treating capacity is little, drying system blow-by phenomenon, brown coal burning even generation coal-dust explosion during operation.The common employing one way of brown coal drying precipitation upgrading roller drier, there are situations such as pan feeding putty, fracture simultaneously, and treating capacity is smaller, because of its manufacturing and transportation reason, the diameter maximum can't be above 4 meters, separate unit more than 100 tonnes the roller drier length for the treatment of capacity need 40-50 rice, need segmentation manufacturing, segmentation transportation, on-the-spot assembling, design, manufacturing, transportation, installation difficulty are all very big, and occupation area of equipment is big, the equipment heat loss is big, the thermal efficiency is low, and complete equipment factory building foundation building is also very huge, and investment is expensive.Hot-blast stove generally adopts chain furnace, and than higher and the fuel burn-off rate is low, the thermal efficiency has only about 60% to the requirement of bunker coal.In the brown coal drying system, brown coal lighter weight and burning-point caloric value are lower, the interior air blast of burner hearth blows afloat brown coal easily and can't burn, the coal that can't act as a fuel though lignite resource is abundant uses, need the high coal of the outward transport caloric value coal that acts as a fuel, the existing energy can not utilize, and has increased operating cost simultaneously.The automaticity of whole in the past brown coal drying system is low, and personnel selection is many, and also than higher, working strength of workers is very big to workman's competency profiling.Therefore the brown coal drying industry is badly in need of wanting a kind of economical and practical again new technology reasonable in design and equipment.

Summary of the invention:

Goal of the invention of the present utility model is to overcome above-mentioned existing technical deficiency, physicochemical property at brown coal is handled, a kind of brown coal drying and upgrading system is provided, it has technology arrangement compactness, reasonable, and treating capacity is big, thermal efficiency height, floor space is little, reduce investment, safe and reliable, the characteristics of energy-conserving and environment-protective.

Technical scheme for achieving the above object is:

A kind of brown coal drying and upgrading system, whole system is totally-enclosed non-oxidation suction type, it comprises the high-temperature flue gas heat power supply device, and this device is connected with the bunker coal feed arrangement, and the outlet of high-temperature flue gas heat power supply device high-temperature flue gas is connected with the air inlet of many pass rotary drums drying machine; The feed end of many pass rotary drums drying machine then is connected with feed arrangement, and discharge end cooperates with the finished product transporting equipment, and air outlet is connected with one-level cleaner at least.

Described feed arrangement is the pan feeding sealing scraper plate machine of VFC, and it is connected with the feed end of many pass rotary drums drying machine.

Described high-temperature flue gas heat power supply device is a coal-powder boiler, the bunker coal feed arrangement comprises the fuel coal bunker, the fuel coal bunker is connected with coal-powder boiler pulverized coal preparation machine by screw feeder, and coal-powder boiler pulverized coal preparation machine top is provided with analytical engine, and analytical engine is connected with cyclone collector by the cyclone collector blast pipe; Coal-powder boiler pulverized coal preparation machine also is connected with the air outlet of coal-powder boiler air-introduced machine, and the air outlet of coal-powder boiler air-introduced machine also is connected with air-introduced machine blast pipe, coal-powder boiler blast pipe respectively.

Described many pass rotary drums drying machine one end is provided with the sealing feed box, which is provided with material inlet, and material inlet is connected with feed arrangement; The sealing feed box is connected with many pass rotary drums drying machine inner core by the material feeding end sealing ring, tube and urceolus in outside many pass rotary drums drying machine inner core, then being provided with successively, urceolus is provided with at least one rolling ring, and rolling ring is placed on the support roller, and support roller is connected the drive cylinder and rotates with transmission device; The other end of many pass rotary drums drying machine is provided with the sealing discharging case, which is provided with the discharge end sealing ring, and the sealing discharging case is provided with sealing discharging case discharge port.

Described dust arrester has multistage, comprises two stage cyclone deduster and one-level wet scrubber, and the final stage cyclone dust collectors are connected with wet scrubber by air-introduced machine.

Drying system of the present utility model moves under air-tight state from going into to expect discharging; The hot-blast stove that thermal source is provided is a coal-powder boiler; Roller drier is many pass rotary drums drying machine; Whole system automation control and monitoring; Qualified discharge after the dry tails dedusting that produces, purification, the desulfurization.

The brown coal drying system equipment of this scheme comprises: coal-powder boiler, many pass rotary drums drying machine, sealing feed box, sealing discharging case, cyclone dust collectors, wet scrubber, product input and output material transporting equipment etc.The technical characterstic of this scheme is: the totally-enclosed non-oxidation negative pressure operation of whole system, sealing pan feeding scraper plate machine feed opening and sealing feed box fastening linking to each other suitable for reading, the exhaust opening of coal-powder boiler advances with the left side of sealing feed box that mouth is fastening to link to each other, the right side of sealing feed box links to each other with the feed end of many pass rotary drums drying machine is fastening, the discharge end of many pass rotary drums drying machine closely links to each other with the sealing discharging case, the sealing nesting box is suitable for reading closely to link to each other with the air intake vent of cyclone dust collectors, sealing discharging case end opening is a sealing device, exhaust outlet closely links to each other with fan inlet by outlet volute and pipeline on the cyclone dust collectors, and the air outlet of this air-introduced machine closely links to each other with wet scrubber.

Its material flow is in the technical program: when many pass rotary drums possess operating condition is that the drying machine inlet temperature reaches when being fit to the brown coal drying temperature, brown coal are by the pan feeding sealing scraper plate machine of VFC, material is even must sending in many pass rotary drums machine continuously, but pan feeding sealing scraper plate machine is by feeding of frequency control easy adjustment and pan feeding speed; Material is sent into the inner core of many pass rotary drums drying machine earlier through the spiral propeller that possesses broken function, strong matter heat exchange takes place in the high-temperature flue gas that provides at inner core and coal-powder boiler, by inner raising material unit material from the inner core end drain into many backhauls drying machine the tube, in middle tube, drain into urceolus by raising material unit, it is exhaust end that dried material drains into the drying machine end by many backhauls urceolus through raising material unit, discharge by sealed discharging device through the sealing discharging case, the dust that cyclone dust collectors are collected is discharged by the weight sealing device, delivers to the outward transport of product outfeed belt in the lump by the helixseal conveyer.

The flow process of flue gas in the technical program: the high-temperature flue gas that fuel produces by coal-powder boiler burning back, under the effect of air-introduced machine, produce negative pressure, exhaust opening by coal-powder boiler enters in many pass rotary drums drying machine by the sealing feed box, with the heat exchange of material generation matter, the elevated temperature heat flue gas returns urceolus along material flow by tube in the inner core process and arrives the sealing discharging case, under the effect of air-introduced machine, carry out first order dedusting by cyclone dust collectors again, the bulky grain product that contains in the flue gas is separated, flue gas enters air-introduced machine by cyclone dust collectors spiral case and pipeline, the air-introduced machine exit forms the high velocity air self-excitation and goes into the water surface in the wet scrubber, the rising flue gas is through spray cleaning, after reaching discharging standards, enter atmosphere through the wet scrubber chimney, finish whole dry run.

The technical program compared with prior art, a whole set of drying equipment is omnidistance sealing operation from the material feeding system to the discharge system, two core component hot-blast stoves, roller driers adopt the equipment of up-to-date development, hot-blast stove adopts coal-powder boiler, roller drier adopts many pass rotary drums drying machine, the full-automatic operation of system.

Material feeding system adopts sealing scraper plate machine, the scraper plate machine is a hermetically-sealed construction, inner each section installs sealing baffle additional, do not hinder material to enter drying system by but stoping air, dynamo-electric machine of scraper plate and the reductor type selecting pattern of breaking the normal procedure, according to brown coal drying system feeding size, motor is selected high number of poles motor for use, reductor is selected high speed reducing ratio reductor for use, and scraper plate chain prompt drop is low, and sealing scraper plate machine adopts frequency control, the not only more accurate control scraper plate machine speed of service, save a large amount of electric energy simultaneously, solved the inhomogeneous putty that does not match and cause with roller drier system drying capacity of pan feeding in the past, the fracture situation has guaranteed that dried back product quality is qualified, stable.

Coal-powder boiler is by brown coal drying coal pulverizer, analytical engine, screw feeder, air-introduced machine, cyclone collector, and airduct is formed.Operation principle is: utilize the special-purpose coal pulverizer of brown coal drying that bunker coal is worn into granularity and be 40-325 purpose coal dust, coal dust passes through analytical engine from coal pulverizer under the effect of air-introduced machine, the coal dust that reaches the requirement granularity enters cyclone collector by analytical engine, analytical engine adopts frequency control to control the throughput of qualified coal dust, adjusts the coal dust amount of supplying with coal-powder boiler and the flexible modulation fire box temperature.Cyclone collector is with the dust separation in the air-flow and the bottom of collecting cyclone collector, and the sealing discharge valve is installed to guarantee the discharge process sealing in the cyclone collector bottom.Air-flow then enters air-introduced machine by the cyclone collector spiral case through the air-introduced machine pipeline, and the air-introduced machine exit flow is divided into two-way, and one road air-flow is sent into the special-purpose coal pulverizer of brown coal and formed closed cycle, and another road air-flow is sent into the coal-powder boiler burner hearth.First via air-flow enters the special-purpose coal pulverizer of brown coal and forms closed cycle, and under the effect of air-introduced machine, this closed cycle is the negative pressure operation, on this transportation work style pipe air inlet is set, so air inlet can suck natural wind to replenish the wind loss of sending in the burner hearth.Another road air-flow is sent into burner hearth, the valve of regulating the air quantity size is set on this transportation work style pipe controls the air quantity size that enters coal-powder boiler, this road high velocity air is sent into burner hearth through the coal dust of the release mesh of sealing discharge valve discharge by airduct with the cyclone collector bottom, and coal dust abundant rapidly burning in burner hearth produces the warm-air supply drying system.Coal-powder boiler is to the extremely well-adapted of fuel, can use various colms, can gather materials on the spot in the brown coal drying industry, the burn-off rate of coal-powder boiler is up to 99%, the thermal efficiency reaches more than 90%, ratio chain furnace in the past improves the thermal efficiency more than 30%, coal-powder boiler has been simplified boiler accessory machinery systems such as traveling-grate stoker, has saved cost of investment, and bunker coal is all closed negative pressure operation from powder process to the burning, working environment is good, safe and reliable, fuel feed and coal-making system VFC are according to the furnace temperature needs, control bunker coal feeding coal and coal dust coal-grinding amount can the easy adjustment fire box temperatures.

Roller drier is many pass rotary drums drying machine of up-to-date development, its reasonable in design, the tubular axis of body is parallel with horizontal plane, eliminate cylindrical shell and be the axial force that is in tilted layout and produces, body adopts support roller supporting transmission, cancelled big pinion drive, the tapering wearing and tearing of drive mechanisms such as support roller, backing ring, gear, gear ring have effectively been eliminated, prolonged the service life of bearing and equipment, make equipment install more convenient, operation is simpler, operation is more reliable, has reduced accident rate, improved equipment and started rate, reduce maintenance cost, improved operating efficiency.Many backhauls dryer complete machine length shortens about about 50% than single backhaul dryer, reduce floor space about 50%, and construction investment reduces about 50%.

Smooth and easy in order to guarantee the drying machine feed, no backup, at the drying machine feeding end sealing feed box is set, spiral propeller, the sealing feed box is provided with feeding mouth, half is positioned at the sealing feed box spiral propeller, second half is welded on the cylinder feeding end barrel, the external diameter of sealing feed box is less than the charging aperture internal diameter of many pass rotary drums drying machine, the sealing feed box prevents to drop on outside the material feeding end when stretching in the roller drier one section feed, install back-up ring additional between feed box and roller drier feed end, returning charge takes place when preventing feed, spiral propeller rotates with cylinder like this, and material is sent into many pass rotary drums drying machine inner core fast, realizes quick feed.Dryer entrance pipe diameter is less than the spiral propeller internal diameter, and the elevated temperature heat flue gas has avoided the direct calcination conveyor screw of high temperature thermal medium to cause the spiral propeller deformed damaged from middle the passing of conveyor screw.Feeding end adopts the labyrinth mode to seal, and assurance equipment no air in the feed process enters system.

Said roller drier comprises that inner core, middle tube and three tubes of urceolus or forms such as inner core and urceolus constitute many backhauls multi-cavity body structure, middle tube is sealing at discharge end, make material fall into tube by inner core, middle tube is sealing at feeding end, make material therefrom tube fall into urceolus.Raising material unit is arranged on each cylinder inboard wall by certain angle, is staggered the installation along circumference and axially-aligned, and the one, can constantly push ahead in order to guarantee material, the 2nd, even in order to guarantee material cloth in cylindrical shell, improve exchange rate.Material from inner core through raising material unit continuous must being kicked up in cylindrical shell, shed, disperse is at the whole volume space of a plurality of cavitys, form the material curtain, the integrity degree of this material curtain and the uniformity thereof have determined the transmission and the exchange of thermal medium, also concerning the thermal efficiency, precipitation ability and quantum of output, material through preliminarily dried falls into tube, material is kicked up in middle tube, shed, in the cavity of inner core and middle tube formation, move to feed end, free water in the material has begun a large amount of evaporations at this moment, middle tube is a hermetically-sealed construction at feeding end, material can only fall in the urceolus, material is kicked up once more by the lifting blade in the urceolus, shed, this process is a drainage procedure, moisture in the material hands over matter that strong heat exchange took place with heat, final material is expelled to the sealing discharging case through exhaust end, and the moisture that is evaporated out is discharged from the top outlet flue of sealing discharging case and entered rear portion cyclone dust collectors and wet scrubber purified treatment.Adopt the labyrinth seal mode to guarantee that air can not enter in the system from the nesting box position between sealing discharging case and the many pass rotary drums drying machine, removal device and sealing discharging case are as one, removal device is closed condition all the time under no material state, material is opened by the sealing discharging device of conducting oneself with dignity just when material flows out, discharger cuts out automatically during no discharging, material is full of whole discharge port during continuous discharge, air does not have the possibility that enters discharger inside, therefore guaranteed the sealing of whole drying system, the structure of Jian Huaing but also improved operating efficiency not only, material fall into product conveying unit and are transported to product and store canopy and store.

Native system is in the negative pressure running status all the time under the effect of air-introduced machine, and from the pan feeding source to the discharging overall process be sealing state, thoroughly stopped the possibility of brown coal burning and coal-dust explosion, safe and reliable to operation.Many pass rotary drums structure integrates many drying units of multi-cavity body drying, has prolonged drying time, and the precipitation ability is strong, therefore output improve greatly, and has saved the energy, has reduced operating cost.Cylindrical shell oneself high insulating effect, the heat that is distributed by inner core passes to middle tube, and the heat that middle tube distributes reaches urceolus, and the heat that distributes also is fully utilized, so the thermal efficiency improves the thermal efficiency 50% up to 80% (traditional monotubular dryer thermal efficiency only is 30%).Cylinder adopts frequency control in addition, adjusts drum speed, and according to pan feeding moisture, suitable rotating speed is adopted in the output requirement, can easily regulate and control desired whole moisture content index as requested.The work of a cover unit is equivalent to the summation of existing conventional art, monotubular roller drier 2-3 platform cover unit series connection ability, so has saved one-time investment.After adopting the technical program, workshop length can shorten 10-20 rice, reduces construction investment more than 30%, and power consumption 20% is saved in equipment investment 20%.

The equipment of native system also comprises the environmental protection dust pelletizing system, is reached and is connected to form successively by airduct by cyclone dust collectors, wet scrubber, air-introduced machine.A large amount of flue gases that dry run produces together are transported to the storage canopy as product after elder generation's process cyclone dust collectors under the effect of air-introduced machine are with oarse-grained feed separation, flue gas enters wet scrubber then from the cyclone dust collectors air-introduced machine that enters suitable for reading, the air-introduced machine exit forms the high velocity air self-excitation and goes into the water surface in the wet scrubber, the rising flue gas is through spray cleaning, after reaching discharging standards, enter atmosphere through the wet scrubber chimney, finish whole dry run.

Pan feeding sealing drag conveyor, roller drier, air-introduced machine, blower equipment are equipped with frequency converter, are convenient to the equipment speed governing, alleviated the impact of starting current simultaneously electrical network, the service life of having improved equipment, and can save a large amount of electric energy.

The control of native system full-automatic operation, system monitoring.Power-equipment adopts control mode and control room centralized control on the spot.A GCK--III type observing and controlling operating desk is established in the control room, and there are equipment such as the central controlled PLC of realization operating desk inside; Near the on-the-spot running device local operation case is set all; 1 signal box is set in the appropriate location, workshop.To the omnidistance monitoring of this system temperature, the flue-gas temperature of 4 of combustion furnace burner hearth, roller drier inlet, outlet and air-introduced machine inlets is monitored.Wherein combustion furnace burner hearth, roller drier inlet adopt thermocouple, compensating wire to realize the detection and the controlling alarm of temperature, and other is by the detection of realization temperature such as thermal resistance.Detect system pressure is omnidistance, totally 4 of pressure-measuring-points, one is the furnace pressure measuring point, is used for judging that furnace pressure is whether within range of normal value, to realize the operating condition monitoring of combustion furnace.1 pressure detecting point respectively is set in roller drier inlet, outlet and air-introduced machine porch in addition.System's oxygen content is omnidistance to be detected, in roller drier inlet, the outlet of many pass rotary drums drying machine and air-introduced machine porch 1 oxygen content test point is set respectively, realize the operation of total system non-oxidation negative pressure, thoroughly stop the brown coal burning and coal-dust explosion takes place, guarantee safe operation.System operation, control function are realized by software, can make amendment neatly according to the control object variation, and to the parameter automatic failure alarm that transfinites, accident is stopped in emergency, and is safe and reliable to operation.

Description of drawings:

Fig. 1: apparatus arrangement of the present utility model and johning knot composition;

Fig. 2: the structural representation of coal-powder boiler of the present utility model;

Fig. 3: the structural representation of many pass rotary drums drying machine of the present utility model.

1 bunker coal feed arrangement among the figure, 2 coal-powder boilers, 3 pan feedings sealing scraper plate machine, the drying machine of pass rotary drum more than 4,5 cyclone dust collectors, 6 air-introduced machines, 7 wet scrubbers, 8 sealing feed boxs, 9 material inlets, 10 material feeding end sealing rings, the drying machine of pass rotary drum more than 11 inner core, tube in 12,13 urceolus, 14 rolling rings, 15 transmission devices, 16 discharge end sealing rings, 17 sealing discharging casees, 18 sealing discharging case discharge ports, 19 fuel coal bunkers, 20 screw feeders, 21 coal-powder boiler pulverized coal preparation machines, 22 analytical engines, 23 cyclone collector blast pipes, 24 coal-powder boiler air-introduced machines, 25 air-introduced machine blast pipes, 26 cyclone collectors, 27 coal-powder boiler blast pipes.

The specific embodiment:

Further specify the utility model below in conjunction with drawings and Examples.

With reference to accompanying drawing 1,2,3, whole system is totally-enclosed non-oxidation suction type, and it comprises the high-temperature flue gas heat power supply device, and this device is connected with bunker coal feed arrangement 1, and the high-temperature flue gas outlet of this device is connected with the air inlet of many pass rotary drums drying machine 4; The feed end of many pass rotary drums drying machine 4 then is connected with feed arrangement, and discharge end cooperates with the finished product transporting equipment, and air outlet is connected with one-level cleaner at least.

Described feed arrangement is the pan feeding sealing scraper plate machine 3 of VFC, and it is connected with the feed end of many pass rotary drums drying machine 4.

Described high-temperature flue gas heat power supply device is a coal-powder boiler 2, bunker coal feed arrangement 1 comprises fuel coal bunker 19, fuel coal bunker 19 is connected with coal-powder boiler pulverized coal preparation machine 21 by screw feeder 20, coal-powder boiler pulverized coal preparation machine 21 tops are provided with analytical engine 22, and analytical engine 22 is connected with cyclone collector 26 by cyclone collector blast pipe 23; Coal-powder boiler pulverized coal preparation machine 21 also is connected with the air outlet of coal-powder boiler air-introduced machine 24, and the air outlet of coal-powder boiler air-introduced machine 24 also is connected with air-introduced machine blast pipe 25, coal-powder boiler blast pipe 27 respectively.

Described many pass rotary drums drying machine 4 one ends are provided with sealing feed box 8, which is provided with material inlet 9, and material inlet 9 is connected with feed arrangement; Sealing feed box 8 is connected with many pass rotary drums drying machine inner core 11 by material feeding end sealing ring 10, tube 12 and urceolus 13 in outside many pass rotary drums drying machine inner core 11, then being provided with successively, urceolus 13 is provided with at least one rolling ring 14, and 14 of rolling rings are connected with transmission device 15; The other end of many pass rotary drums drying machine 4 is provided with sealing discharging case 17, which is provided with discharge end sealing ring 16, and sealing discharging case 17 is provided with sealing discharging case discharge port 18.

Described dust arrester has multistage, comprises two stage cyclone deduster 5 and one-level wet scrubber 7, and final stage cyclone dust collectors 5 are connected with wet scrubber 7 by air-introduced machine 6.

Brown coal drying technical process of the present utility model is divided into material flow and thermal medium flow process two parts:

Material flow: brown coal are through sealing pan feeding scraper plate machine 3, enter sealing feed box 8 from material inlet 9, enter roller drying system 4, drying system 4 is by sealing feed box 8, material inlet 9, material feeding end sealing device 10, many pass rotary drums drying machine inner core 11, middle tube 12, urceolus 13, rolling ring 14, support roller transmission device 15, discharge end sealing device 16, sealing discharging case 17, discharge gate is formed, and material enters many pass rotary drums drying machine inner core 11 by sealing feed box 8, under the effect of inner lifting blade, material is fallen in the tube 12 by the inner core front end, and the front end of middle tube 12 moves with lifting blade for sealing, material backward, fall into urceolus 13 in moving to during tube rear end, material moves to the exhaust end of drying machine under the effect of urceolus lifting blade, drain into sealing discharging case 17 by the exhaust end raising material unit, finally falls into the below product transport apparatus through discharge gate 18, be transported to product coal storage canopy, finish dry run.

Thermal medium flow process: the high-temperature flue gas that fuel produces by coal-powder boiler 2 burning backs, under the effect of air-introduced machine 6, produce negative pressure, exhaust opening by coal-powder boiler 2 enters in many pass rotary drums drying machine by sealing feed box 8, with the heat exchange of material generation matter, the elevated temperature heat flue gas returns urceolus 13 along material flow by tube 12 in inner core 11 processes and arrives sealing discharging casees 17, under the effect of air-introduced machine, carry out first order dedusting by cyclone dust collectors 5 again, the bulky grain product that contains in the flue gas is separated, flue gas enters air-introduced machine 6 by cyclone dust collectors 5 spiral cases and pipeline, air-introduced machine 6 exits form the high velocity air self-excitation and go into the water surface in the wet scrubber 7, the rising flue gas is through spray cleaning, after reaching discharging standards, enter atmosphere through wet scrubber 7 chimneys, finish whole dry run.

Many pass rotary drums drying machine, its reasonable in design, the tubular axis of body is parallel with horizontal plane, eliminate cylindrical shell and be the axial force that is in tilted layout and produces, body adopts support roller 14 supporting transmissions, cancelled big pinion drive, the tapering wearing and tearing of drive mechanisms such as support roller, backing ring, gear, gear ring have effectively been eliminated, prolonged the service life of bearing and equipment, make equipment install more convenient, operation is simpler, operation is more reliable, has reduced accident rate, improved equipment and started rate, reduce maintenance cost, improved operating efficiency.Many backhauls dryer complete machine length shortens about about 50% than single backhaul dryer, reduce floor space about 50%, and construction investment reduces about 50%.

Native system is in the negative pressure running status all the time under the effect of air-introduced machine, and from the pan feeding source to the discharging overall process be sealing state, thoroughly stopped the possibility of brown coal burning and coal-dust explosion, safe and reliable to operation.Many pass rotary drums structure integrates many drying units of multi-cavity body drying, has prolonged drying time, and the precipitation ability is strong, therefore output improve greatly, and has saved the energy, has reduced operating cost.Cylindrical shell oneself high insulating effect, the heat that is distributed by inner core passes to middle tube, and the heat that middle tube distributes reaches urceolus, and the heat that distributes also is fully utilized, so the thermal efficiency improves the thermal efficiency 50% up to 80% (traditional monotubular dryer thermal efficiency only is 30%).Cylinder adopts frequency control in addition, adjusts drum speed, and according to pan feeding moisture, suitable rotating speed is adopted in the output requirement, can easily regulate and control desired whole moisture content index as requested.

Claims (5)

1. a brown coal drying and upgrading system is characterized in that, whole system is totally-enclosed non-oxidation suction type, and it comprises the high-temperature flue gas heat power supply device, and the outlet of high-temperature flue gas heat power supply device high-temperature flue gas is connected with the air inlet of many pass rotary drums drying machine; The feed end of many pass rotary drums drying machine then is connected with feed arrangement, and discharge end cooperates with the finished product transporting equipment, and discharge end cooperates with product transport apparatus, and air outlet is connected with cyclone dust removal equipment, and the outlet of cyclone dust removal equipment is connected with wet scrubber.
2. brown coal drying and upgrading as claimed in claim 1 system is characterized in that, described feed arrangement is the pan feeding sealing scraper plate machine of VFC, and it is connected with the feed end of many pass rotary drums drying machine.
3. brown coal drying and upgrading as claimed in claim 1 system, it is characterized in that, described high-temperature flue gas heat power supply device is a coal-powder boiler, the bunker coal feed arrangement comprises the fuel coal bunker, the fuel coal bunker is connected with coal-powder boiler pulverized coal preparation machine by screw feeder, coal-powder boiler pulverized coal preparation machine top is provided with analytical engine, and analytical engine is connected with cyclone collector by the cyclone collector blast pipe; Coal-powder boiler pulverized coal preparation machine also is connected with the air outlet of coal-powder boiler air-introduced machine, and the air outlet of coal-powder boiler air-introduced machine also is connected with air-introduced machine blast pipe, coal-powder boiler blast pipe respectively.
4. brown coal drying and upgrading as claimed in claim 1 system is characterized in that described many pass rotary drums drying machine one end is provided with the sealing feed box, which is provided with material inlet, and material inlet is connected with feed arrangement; The sealing feed box is connected with many pass rotary drums drying machine inner core by the material feeding end sealing ring, tube and urceolus in outside many pass rotary drums drying machine inner core, then being provided with successively, urceolus is provided with at least one rolling ring, and rolling ring is placed on the support roller, and support roller is connected the drive cylinder and rotates with transmission device; The other end of many pass rotary drums drying machine is provided with the sealing discharging case, which is provided with the discharge end sealing ring, and the sealing discharging case is provided with sealing discharging case discharge port.
5. brown coal drying and upgrading as claimed in claim 1 system is characterized in that described dust arrester has multistage, comprises two stage cyclone deduster and one-level wet scrubber, and the final stage cyclone dust collectors are connected with wet scrubber by air-introduced machine.
CN2010202850760U 2010-08-09 2010-08-09 Brown coal drying and quality-improving system CN201748770U (en)

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Cited By (11)

* Cited by examiner, † Cited by third party
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CN102878789A (en) * 2012-10-24 2013-01-16 熊汉夫 Method for manufacturing dedusting and radiating device of guilloche dryer of fertilizer drying oven
CN102914125A (en) * 2012-10-09 2013-02-06 王远大 Heating tank for quality improvement of high-yielding lignite by drying
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
CN104147884A (en) * 2014-08-21 2014-11-19 唐山天和科技开发有限公司 Hot smoke gas processing technology and device of slack coal drying system
CN104833189A (en) * 2015-04-29 2015-08-12 神华集团有限责任公司 Gasification coal cinder drying equipment and system
CN105333724A (en) * 2015-11-06 2016-02-17 西安热工研究院有限公司 Safety storage and transportation method of dried brown coal
CN105387697A (en) * 2015-10-08 2016-03-09 镇江裕久智能装备股份有限公司 Aluminum skimming drying machine
CN106996687A (en) * 2017-02-28 2017-08-01 武汉天颖环境工程股份有限公司 A kind of baking furnace system controlled with pressure and temp
CN107144106A (en) * 2017-04-21 2017-09-08 北京路优材料技术有限公司 A kind of method of superhigh temperature negative pressure drying kir powder
CN107576166A (en) * 2017-07-31 2018-01-12 浦江县元寿农业科技有限公司 Multifunction chemical fertilizer drying machine based on roller
CN107677070A (en) * 2017-08-03 2018-02-09 浦江县元寿农业科技有限公司 Beneficial to the High-efficiency dryer of chemical fertilizer shaping

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102914125A (en) * 2012-10-09 2013-02-06 王远大 Heating tank for quality improvement of high-yielding lignite by drying
CN102914125B (en) * 2012-10-09 2014-10-22 王远大 Heating tank for quality improvement of high-yielding lignite by drying
CN102878789B (en) * 2012-10-24 2014-10-29 熊汉夫 drying device of fertilizer and producing method thereof
CN102878789A (en) * 2012-10-24 2013-01-16 熊汉夫 Method for manufacturing dedusting and radiating device of guilloche dryer of fertilizer drying oven
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
CN104147884B (en) * 2014-08-21 2016-05-04 唐山天和科技开发有限公司 The hot flue gas treating process of a kind of fine cleaned coal drying system
CN104147884A (en) * 2014-08-21 2014-11-19 唐山天和科技开发有限公司 Hot smoke gas processing technology and device of slack coal drying system
CN104833189A (en) * 2015-04-29 2015-08-12 神华集团有限责任公司 Gasification coal cinder drying equipment and system
CN105387697A (en) * 2015-10-08 2016-03-09 镇江裕久智能装备股份有限公司 Aluminum skimming drying machine
CN105333724A (en) * 2015-11-06 2016-02-17 西安热工研究院有限公司 Safety storage and transportation method of dried brown coal
CN106996687A (en) * 2017-02-28 2017-08-01 武汉天颖环境工程股份有限公司 A kind of baking furnace system controlled with pressure and temp
CN107144106A (en) * 2017-04-21 2017-09-08 北京路优材料技术有限公司 A kind of method of superhigh temperature negative pressure drying kir powder
CN107576166A (en) * 2017-07-31 2018-01-12 浦江县元寿农业科技有限公司 Multifunction chemical fertilizer drying machine based on roller
CN107677070A (en) * 2017-08-03 2018-02-09 浦江县元寿农业科技有限公司 Beneficial to the High-efficiency dryer of chemical fertilizer shaping

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