CN207646086U - Tunnel-type lime kiln - Google Patents

Abstract

The utility model provides a kind of tunnel-type lime kiln, is related to the technical field of lime generation equipment, including limekiln body and track；The limekiln body left and right ends are provided with the inlet and outlet entered for railcar；The smoke outlet for smoke evacuation is provided with above the limekiln body；At least one ash discharging passage being in communication with the outside is provided in limekiln body.It is external that the coal ash that tunnel-type lime kiln provided by the utility model generates can be discharged to limekiln from ash discharging passage, is preferably cleaned to tunnel-type lime kiln；Tunnel-type lime kiln tool production serialization, period are short, yield, the high advantage of quality.

Description

Tunnel-type lime kiln

Technical field

The utility model is related to lime generation equipment technical fields, more particularly, to a kind of tunnel-type lime kiln.

Background technology

It is every with calcium carbonate natural rock as main component, such as limestone, chalk, dolomitic limestone, it is all available To produce lime.

By the natural rock that main component is calcium carbonate, calcine at moderate temperatures, after excluding the carbon dioxide decomposited, Gained is lime with calcium oxide (CaO) product as main component, also known as quick lime.In actual production, it is quickening point Solution, calcination temperature are often increased to 1000~1200 DEG C.

Steel and iron industry, calcium carbide industry, aluminum oxide industry, the industry such as refractory material is all lime consumption rich and influential family, nearly 2 years this Several industries are all the industries of high speed development.Annual yield is substantially to be increased with 20% or more speed.

But main material (auxiliary material) lime that they are needed does not increase accordingly really, so causing the tight of lime , starting to have stimulated a large amount of of social native limekiln, native firing in full flourish and causing serious pollution to environment, In this case, country and local government have put into effect the policy and regulation of the native firing of yarn row regulation in succession, but difficult to realize Desired effect, the reason is that there is the stimulation of demand.Therefore to infuse the pollution that native firing is administered at bottom, it is necessary to carry out Modern New Technology stone Ash furnace solves the problems, such as demand.

Utility model content

The purpose of this utility model is to provide tunnel-type lime kiln, with the present limekiln production time alleviated it is long, Seriously polluted technical problem.

A kind of tunnel-type lime kiln provided by the utility model, including limekiln body and track；In the limekiln Body left and right ends are provided with the inlet and outlet entered for railcar；

The smoke outlet for smoke evacuation is provided with above the limekiln body；It is provided at least in limekiln body One ash discharging passage being in communication with the outside.

Further, the ashes import of the ash discharging passage is provided with fire grate, and ashes outlet is provided with grate furnace ash door.

Further, the import and/or outlet of the limekiln body are provided with heating device.

Further, the heating device is coal burner.

Further, multiple ashes imports are provided in the limekiln body, multiple ashes inlets evens are arranged in institute State two, track or so.

Further, the limekiln body is refractory brick limekiln body.

Further, it is provided with temperature sensor in the limekiln body.

Further, the dust pelletizing system for removing dust is provided on the smoke outlet.

Further, further include setting kiln car in orbit, the kiln car includes at least one wearing fire basket.

Further, described wear is provided with 6 load chambers on fire basket, and is provided with fire-through passage between adjacent load chamber.

It is external that the coal ash that tunnel-type lime kiln provided by the utility model generates can be discharged to limekiln from ash discharging passage, Preferably tunnel-type lime kiln is cleaned；Tunnel-type lime kiln tool production serialization, period are short, yield, and quality is high Advantage.

Description of the drawings

It, below will be right in order to illustrate more clearly of specific embodiment of the present invention or technical solution in the prior art Specific implementation mode or attached drawing needed to be used in the description of the prior art are briefly described, it should be apparent that, it is described below In attached drawing be that some embodiments of the utility model are not paying creativeness for those of ordinary skill in the art Under the premise of labour, other drawings may also be obtained based on these drawings.

Fig. 1 is the structural schematic diagram for the tunnel-type lime kiln that the utility model embodiment provides；

Fig. 2 is the stereogram for wearing fire basket that the utility model embodiment provides；

Fig. 3 is the front view that fire basket is worn shown in Fig. 2；

Fig. 4 is the vertical view that fire basket is worn shown in Fig. 3.

Icon：100- limekiln bodies；200- imports；300- is exported；400- heating devices；500- grate furnace ash doors； 600- fire grates；700- tracks；The second tracks of 701-；800- ashes imports；900- ashes export；110- wears fire basket； 120- fire-through passages；130- load chambers；140- discharge ports.

Specific implementation mode

The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally The every other embodiment that field those of ordinary skill is obtained without making creative work, belongs to this practicality Novel protected range.

It is in the description of the present invention, it should be noted that term "center", "upper", "lower", "left", "right", " perpendicular Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only The utility model and simplifying describes for ease of description, do not indicate or imply the indicated device or element must have it is specific Orientation, with specific azimuth configuration and operation, therefore should not be understood as limiting the present invention.In addition, term " the One ", " second ", " third " are used for description purposes only, and are not understood to indicate or imply relative importance.

In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally Connection；It can be mechanical connection, can also be electrical connection；Can be directly connected, can also indirectly connected through an intermediary, It can be the connection inside two elements.For the ordinary skill in the art, it can understand above-mentioned art with concrete condition The concrete meaning of language in the present invention.

Fig. 1 is the structural schematic diagram for the tunnel-type lime kiln that the utility model embodiment provides；

Fig. 2 is the stereogram for wearing fire basket that the utility model embodiment provides；Fig. 3 is the front view that fire basket is worn shown in Fig. 2； Fig. 4 is the vertical view that fire basket is worn shown in Fig. 3.

Shown in referring to Fig.1, in a kind of tunnel-type lime kiln provided by the utility model, including limekiln body 100 and rail Road 700；100 left and right ends of the limekiln body are provided with the import 200 entered for 700 vehicle of track and outlet 300；

The top of the limekiln body 100 is provided with the smoke outlet for smoke evacuation；The setting in limekiln body 100 There is at least one ash discharging passage being in communication with the outside.

In the present embodiment, import 200 and the outlet 300 of kiln car entrance, track 700 are useful on limekiln body 100 It is arranged in limekiln body 100, track 700 is stretched out from 100 import 200 of limekiln body and outlet 300, and such kiln car can Limekiln body 100 is passed in and out along track 700.

In some embodiments, the length of limekiln body 100 could be provided as 10m, and 700 length of track is 21m； When lime is calcined in limekiln, limekiln body 100 is discharged by ash discharging passage in the coal ash generated in limekiln body 100 Outside；Lime plus thermogenetic high-temperature flue gas are discharged from smoke outlet.

On above-described embodiment basis, further, the ashes import 800 of the ash discharging passage is provided with fire grate 600, Ashes outlet 900 is provided with grate furnace ash door 500.

In some embodiments, the ashes import 800 of ash discharging passage is in limekiln body 100, and ashes outlet 900 is in lime Outside kiln kiln body 100, coal ash is generated in limekiln body 100 from the entrance of ashes import 800, is exported from ashes by ash discharging passage 900 discharges, general ashes export 900 horizontal positions and are less than ashes import 800, and such coal ash is in ash discharging passage in the work of gravity 900 discharges can be exported from ashes under.

Fire grate 600 is provided in ashes import 800, the gap very little between fire grate 600 disclosure satisfy that coal ash passes through, Stop that the entrance of lime, the lime fallen on kiln car in this way will not be mixed in coal ash and be discharged, cause to waste；Even if the later stage can Separation, cost performance are too low.

On above-described embodiment basis, further, in the import 200 and/outlet 300 of the limekiln body 100 It is provided with heating device 400.

There are heating device 400 in the import 200 of limekiln body 100 and/or outlet 300, to the limestone mine on kiln car into Row calcining, limestone mine becomes quick lime after burning；This limekiln body 100 is compared with present technology, this limekiln only has Calcining zone, kiln car load limestone mine and enter in limekiln, and heating device 400 is heated, and generate coal ash and are exported from ashes 900 discharges, flue gas are discharged from smoke outlet；It is both provided with limekiln at the import 200 and outlet 300 of limekiln body 100 Door, by 300 closing of import 200 and outlet, prevents heat diffusion when limestone calcination.

On above-described embodiment basis, further, the heating device 400 is coal burner.

In some embodiments, heating device 400 uses coal burner, and a large amount of coal is in coal storehouse, by coal Powder machine crushes coal, then lights a fire by fuel point firearm, is jetted out flames, is carried out to limestone mine by rotating burner hearth Calcining.

Desulfurizing agent composition is added in coal dust can slough the sulfur dioxide composition in coal dust during coal dust firing, Reduce the discharge of sulfur dioxide.

The use of coal burner can be preferably that lime burning transmits heat；The change that coal is generated in 700 DEG C of high temperature It learns thermal energy and further increases combustion heat value, heat is transmitted the limestone mine time and shortened in 1200 DEG C of ignition temperature, to make calcining The lime time shortens.

During coal dust firing, needs enough air and participate in burning；First, ensureing that burning being capable of completely burned Enough energy are discharged, in addition controls and saves the carbon monoxide of row because oxygen deficiency incomplete combustion burns.

Simultaneously in order to increase the reaction speed of coal dust, the grain size of coal dust is minimized, the area that gas-solid is in contact has been increased； Oxygen concentration in gas is improved by increasing air capacity, increases the speed of diffusion；While increasing air capacity by air blower Also air velocity is improved, air-film thickness is reduced.

On above-described embodiment basis, further, multiple ashes imports are provided in the limekiln body 100 800, multiple ashes imports 800 are evenly arranged in 700 or so two, the track.

In some embodiments, there are multiple ashes imports 800, the vehicle-mounted limestone calcination of kiln car in limekiln body 100 When will produce a large amount of coal ash, a large amount of coal ash enter ash discharging passage to be discharged to limekiln body from ashes import 800 Outside 100.

In coal burner when to limestone calcination, due to providing energy using coal dust firing；Coal burner It can make to generate a large amount of coal ash in limekiln body 100, a part of coal ash is discharged from smoke outlet, and a part is fallen in limekiln body It in 100, is entered in ash discharging passage by ashes import 800, using 900 discharge limekiln body 100 of ashes outlet.

When calcining, the grate furnace ash door 500 of ashes outlet 900 is to close, and with continuous calcining, ashes are gradual The accumulation in grate furnace ash door 500 is less than ashes import when opening grate furnace ash door 500 since ashes outlet 900 is located at 800, such coal ash can rely on gravity to be automatically discharged from ash discharging passage.

On above-described embodiment basis, further, the limekiln body 100 is refractory brick limekiln body.

The refractory material that refractory brick refractory clay or other refractory raw materials are fired into.It is faint yellow or with brown.It is main to use In building smelting furnace, it is resistant to 1580 DEG C -1770 DEG C of high temperature.

On above-described embodiment basis, further, temperature sensor is provided in the limekiln body 100.

In some embodiments, it is provided with temperature sensor in limekiln body 100, limekiln body can be monitored in real time Temperature in 100, temperature sensor pass data to control room, and coal dust firing can be controlled by controlling indoor control device Device, the data that the operating personnel of control room are detected by temperature sensor, controls coal burner, to adjust lime Temperature in kiln kiln body 100.

Multiple temperature sensors can be set in limekiln body 100, so as to monitor in limekiln body 100 not With the temperature of position, to more easily by control room control coal burner control temperature in limekiln body 100.

On above-described embodiment basis, further, the dedusting system for removing dust is provided on the smoke outlet System.

In some embodiments, since limekiln is when production, a large amount of dust is will produce, if these dust are not Trapping recycling is timely given, environment is not only polluted, seriously affects the health of post operation personnel, waste preciousness The energy and resource.

Dust pelletizing system is by gas collection dust hood, admission line, deduster, ash exhauster, wind turbine, silencer and exhaust chimney group At the gas in smoke outlet enters admission line, is discharged after the processing of dust pelletizing system；The powder in flue dust is purified in this way Dirt.

Dust pelletizing system can also use water mist dust-removing system, and flue gas enter in flue, due to flue gas high-speed motion, The water of penetrating is melted into the ash material in tiny water mist wet flue gas by it, in this way, collision cohesion just has occurred with water droplet in ash material, especially It is that the tiny dust material of material diameter can be water-soluble by water mist.Reach first time dedusting and desulfurization, these are carried out for the separation of ash material Adequately prepare, then into cylinder, the flue gas for reducing rapidly temperature continues to impact the limewash in pond, dust in flue gas and SO₂It is reacted with the limewash in pond and generates sulfate, sunk under water under the action of inertia force, gravity, adhesive force, cohesiveness At second of sweetening process, the spray evoked by flue gas, water mist with the flue gas after washing under wind turbine gravitation, lift simultaneously by air water It opens, flue gas is made fully to be reacted with limewash, then carry out gas-water separation through vane dewatering, water flows into pond through tapping pipe, and Flue gas completion third time dedusting and desulfurization, purified gas is set to be discharged into air by wind turbine.

As shown in figs 2-4, further include being arranged on track 700 further on above-described embodiment basis Kiln car, the kiln car include at least one wearing fire basket 110.

Track 700, import 200 and outlet of the track 700 from limekiln body 100 are provided in limekiln body 100 It is stretched out in 300, kiln car travels on track 700, and lime is filled on kiln car, and stone is entered from the import 200 of limekiln body 100 In ash furnace.

In some embodiments, furnace superintendent 10m is calcined in limekiln body 100, the length of kiln car is no longer than 10m, generally Using the kiln car of 9m long, each kiln car is made of the fire basket 110 of wearing of 9 1m long.Each wear fire basket 110 high 1.4m, wide 1.8m.

As shown in figs 2-4, on above-described embodiment basis, further, described wear is provided with 6 on fire basket 110 Load chamber 130, and fire-through passage 120 is provided between adjacent load chamber 130.

Each to wear there are six load chamber 130 on fire basket 110,130 length of load chamber and height are identical as fire basket 110 is worn；Phase Fire-through passage 120 is formed between adjacent load chamber 130；In some embodiments, 110 width 1.8m of fire basket, the width of load chamber 130 are worn 0.23m has the fire-through passage 120 of 0.08m between connected load chamber 130.

When coal burner heats lime in limekiln body 100 in this way, heat can pass through fire-through passage 120 transmit；It is surrounded by high temperature in load chamber 130, the time of lime burning can be reduced in this way.

In some embodiments, wearing fire basket 110 uses unified specification, load chamber 130 also to use unified specification, in this way When calcining, heat is transmitted and the lime stone in each load chamber 130 can be transmitted quickly, and each is filled The environment carried residing for room 130 is similar, and the time that such limestone calcination is completed also is not much different.

Kiln car can be arranged as required to wear the number of fire basket 110, wear 130 numbers of load chamber on fire basket 110 be also can To be changed according to actual demand, when the number of load chamber 130 on fire basket 110 is worn in the size influence of limestone particle；In order to Lime stone calcination time in limekiln is reduced, can be rapidly performed by when thus needing heat to transmit, lime stone is made to exist When calcining, heat is transmitted rapid, and lime stone is little in the time phase difference that calcining is completed, which reduces lime stone burning and The generation of the problem of underburnt, to ensure the quality of lime.

There are three tracks 700, two siding tracks 700 to be used for the traveling of kiln car, intermediate track in limekiln body 100 There is the second track 701 on 700；Second track 701 is used to control the lime discharge of kiln car, has discharge gate under kiln car, in discharge It is hinged with discharge door on mouthful, discharge door one end is fixed by the second track 701, and the other end works as kiln in this way by being hinged on kiln car When vehicle is moved to discharge port 140, by mobile second track 701, discharge door is set to open, lime is entered from discharge door and unloaded In material mouth 140, then mobile second track 701, so that discharge door is closed on discharge gate.

Track 700 is three, and the second track 701 on intermediate orbit 700 is above discharge port 140, the second track 701 On be provided with sawtooth, can be engaged with the gear of the tractor on kiln car；Make the second track by the front and back rotation on tractor 701 move forward and backward；When the second track 701 removes above discharge port 140, the discharge door on kiln car is opened, the stone on kiln car Ash enters from discharge gate in discharge port 140, and when the lime on kiln car is unsnatched, tractor makes the second track 701 move backward, by kiln Discharge door on vehicle is shut.

It is suitble to be not limited to calcined limestone specification in tunnel limekiln between 2cm to 4cm；The ratio between general limestone particle size Control within 2, be not in thus compared with small particle decomposition of limestone complete after also burning is asked under high temperature environment The problem of topic, the larger lime stone of grain size decomposes complete, generation underburnt, influences product quality not yet.

The coal ash that tunnel-type lime kiln provided by the utility model generates can be discharged to limekiln body 100 from ash discharging passage Outside, preferably tunnel-type lime kiln is cleaned；Tunnel-type lime kiln tool production serialization, period are short, yield, and quality is high The advantages of, and using after wearing fire basket 110, there is fire-through passage 120 between each load chamber 130, it is each to fill when calcining The lime stone carried in room 130 is in hot environment, and the time of such limestone calcination is short, can subtract compared with the prior art Few a large amount of time.

Finally it should be noted that：The above various embodiments is only to illustrate the technical solution of the utility model, rather than limits it System；Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should Understand：It still can be with technical scheme described in the above embodiments is modified, either to which part or whole Technical characteristic carries out equivalent replacement；And these modifications or replacements, this practicality that it does not separate the essence of the corresponding technical solution are new The range of each embodiment technical solution of type.

Claims (8)

1. a kind of tunnel-type lime kiln, which is characterized in that including limekiln body and track；In described limekiln body or so two End is provided with the inlet and outlet entered for railcar；

The smoke outlet for smoke evacuation is provided with above the limekiln body；It is provided in limekiln body at least one The ash discharging passage being in communication with the outside；

Further include setting kiln car in orbit, the kiln car includes at least one wearing fire basket；

Described wear is provided with 6 load chambers on fire basket, and is provided with fire-through passage between adjacent load chamber.

2. tunnel-type lime kiln according to claim 1, which is characterized in that the ashes import of the ash discharging passage is provided with stove Row, ashes outlet are provided with grate furnace ash door.

3. tunnel-type lime kiln according to claim 1, which is characterized in that the limekiln body import and/or Outlet is provided with heating device.

4. tunnel-type lime kiln according to claim 3, which is characterized in that the heating device is coal burner.

5. tunnel-type lime kiln according to claim 1, which is characterized in that be provided with multiple stoves in the limekiln body Grey import, multiple ashes inlets evens are arranged in two, described track or so.

6. tunnel-type lime kiln according to claim 1, which is characterized in that the limekiln body is refractory brick limekiln Kiln body.

7. tunnel-type lime kiln according to claim 1, which is characterized in that be provided with temperature biography in the limekiln body Sensor.

8. tunnel-type lime kiln according to claim 1, which is characterized in that be provided on the smoke outlet for removing powder The dust pelletizing system of dirt.