CN206430163U - A kind of refuse burning system - Google Patents

Abstract

The utility model discloses refuse burning system, doffer including connecting incinerator furnace chamber, provided with burning fire grate in the incinerator, provided with the inlet air plenum for being passed through burning wind below the fire grate, the incinerator rear connects flue gas purification system by pipeline, and flue gas is discharged after being purified through the flue gas purification system.The utility model refuse burning system, from blanking to burning, using effect is good, is greatly improved the firing efficiency of rubbish, with preferable application prospect.

Description

A kind of refuse burning system

Technical field

The utility model belongs to technical field of waste treatment, more specifically to refuse burning system.

Background technology

The processing of rubbish is the Tough questions that Process of Urbanization and economic development are faced, and in the prior art, refuse depot exists Refuse burning system can not adapt to domestic high-moisture, the rubbish of low heat value, and irrational refuse burning system is to rubbish Burn incomplete, its emission affects to surrounding enviroment.

Utility model content

The purpose of this utility model is to solve the problem of prior art is present to imitate there is provided a kind of burning for improving rubbish Rate, applicability is good, the refuse burning system of energy-conserving and environment-protective.

To achieve these goals, the technical scheme that the utility model is taken is：This refuse burning system provided, It is characterized in that：Provided with burning fire grate in doffer including connecting incinerator furnace chamber, the incinerator, below the fire grate Provided with the inlet air plenum for being passed through burning wind, the incinerator rear connects flue gas purification system by pipeline, and flue gas is through the flue gas Discharged after cleaning system purification.

To make above-mentioned technical proposal more detailed and specific, the utility model also provides optimization technique further below Scheme, to obtain satisfied practical function：

Provided with the feed device for pushing to rubbish in incinerator below the doffer.

The doffer includes hopper and blanking groove, the hopper provided with control blanking between the hopper and blanking groove Door.

The blanking groove includes stage casing blanking groove and hypomere blanking groove, and the hypomere blanking groove is towards the furnace chamber side of incinerator Extend to bending.

The neck formed in the hypomere blanking groove bending is provided with the air cooling portion cooled down to rubbish.

Provided with the broken Biodge device for breaing up the bridge formation rubbish of accumulation in the hopper.

The feed device includes receiving the feed platform that doffer falls rubbish, the front connection of the feed platform The incinerator, the feed platform is provided with push rod, and the push rod is driven by push cylinder.

The feed device includes total travel pusher and short stroke pusher, the total travel pusher and short Stroke pusher connects the push rod by the independent push cylinder of correspondence and formed.

Directive wheel of the feed platform provided with some limitation push rod directions of motion.

Provided with the leachate collection groove for collecting percolate below the feed platform.

The fire grate includes the drying fire grate of conveying garbage burning successively, combustion grate and burn-out grate, each fire grate Stepped arrangement.

The dry fire grate, combustion grate and burn-out grate are by the drive device powered motion for being connected to each fire grate both sides Rubbish is conveyed.

The drive device includes driving cylinder, and the driving cylinder passes through pushing away that the connecting rod connection promotion fire grate is moved forward and backward Bar.

The connecting rod is V-structure bar, is rotatably coupled in the middle part of the V-structure bar by rotating shaft on bearing, One end of the V-structure bar connects the driving cylinder, and the other end connects the push rod.

The push rod is provided with the second buffer spring.

Each fire grate tilts down arrangement, and support swing rod is equipped with below each fire grate.

Described to be provided with independent inlet air plenum per one-level fire grate lower section, primary air fan distinguishes the air in garbage pool through pipeline Each inlet air plenum is sent to, control respectively is equipped with the pipeline for connecting each inlet air plenum by the primary air fan and enters each inlet air plenum The flow air door of interior air mass flow.

Pipeline between the primary air fan and the inlet air plenum is provided with the preheater preheated to air.

The burning furnace upper end is connected with overfire air fan, and the overfire air fan extracts air at the top of the incinerator through pipe Road is sent to auxiliary smoke combustion above the burner hearth of the incinerator.

Flue gas purification system rear pipeline is provided with EGR blower fans, and the EGR blower fans outlet air end is connected to by pipeline Above the burner hearth of the incinerator.

The burner hearth of the incinerator is provided with one section of burner hearth throat to be formed to inside contracting, overfire air fan and/or the EGR wind The air of machine is connected through pipeline with the burner hearth throat.

The incinerator is provided with start-up burner, auxiliary burner and the temperature sensor for detecting in-furnace temperature.

The utility model compared with prior art, with advantages below：The utility model rubbish is received and discharge system, is made It is stable effective with easy to control, connection and reasonable arrangement, can the controllable reception and discharging of realizing rubbish in order, with stronger reality With property and preferable application prospect.

Brief description of the drawings

The mark in the content and figure expressed by the accompanying drawing of this specification is briefly described below：

Fig. 1 is the utility model refuse burning system and its air and gas system schematic diagram；

Fig. 2 is middle flow pattern chamber structure schematic diagram；

Fig. 3 is the utility model feeding system structural representation；

Fig. 4 is A partial enlargement structural representations in Fig. 3；

Fig. 5 is burning fire grate structural representation；

Fig. 6 is B partial enlargement structural representations in Fig. 5；

Fig. 7 is that Fig. 5 burns fire grate left side view.

Marked in figure：1st, doffer, 101, hopper, 102, hopper door, 103, stage casing blanking groove, 104, hypomere blanking Groove, 105, air cooling portion, 106, expansion joint, 107, broken Biodge device；

2nd, feed device, 201, push cylinder, 202, directive wheel, 203, push rod, the 204, first buffer spring, 205, push Block, 3, leachate collection groove；

4th, fire grate, 41, dry fire grate, 42, combustion grate, 43, burn-out grate, 44, drive device, 441, driving cylinder, 442nd, connecting rod, 443, push rod, the 444, second buffer spring, 45, support swing rod, 46, support post；

5th, inlet air plenum, 6, burner hearth, 7, primary air fan, 8, preheater, 9, overfire air fan, 10, incinerator, 11, gas cleaning System, 12, EGR blower fans, 13, air-introduced machine, 14, necking section, 15, combustion zone again.

Embodiment

Below against accompanying drawing, by the description to embodiment, further detailed is made to embodiment of the present utility model Thin explanation.

Rubbish is deposited about 7 days in refuse pit, house refuse enter factory it is fermented after, by the grab bucket of garbage crane by rubbish Rubbish sends into each incinerator in hole, and through doffer 1, the combustion zone of fire grate is pushed to by feed device 2.

As shown in figure 3, feeding system includes doffer 1, doffer 1 includes hopper 101, in addition to connection hopper 101 and the blanking groove of incinerator, the hopper door 102 provided with control blanking between hopper 101 and blanking groove；Under doffer Side is fallen provided with the feed device 2 that pushes to rubbish in incinerator, rubbish through hopper and blanking groove, then by feed device by rubbish Rubbish is pushed in burner hearth.

In the utility model, hopper 101 is placed on hopper platform, can accommodate inventory of grab bucket, and its width, which is more than, grabs The maximum open width of bucket, it is to avoid grab bucket is bumped against with bucket wall and scattering of rubbish is on platform.It is preferred that, can be in hopper 101 Top sets camera, and camera will monitor that picture is fed back on the display frequency of control cabinl pulpit, be easy to monitor the blanking feelings that feed intake of hopper Condition.

To prevent bridge formation, the wall of hopper 101 is welded by steel plate, rubbish is easily moved.As shown in Figure 3, blanking groove with Vertical direction is in 5 degree~10 degree of inclination angle, in order to smooth blanking.It is provided with break up the bridge formation rubbish of accumulation in hopper 101 Broken Biodge device 106.In the utility model, it is respectively provided with the hopper 101 of each stove and starts letter for build bridge detection and crane grab bucket Number microwave sensor, such as detecting has bridge formation situation in hopper 103, then can stop grab bucket deliver material, simultaneously start Broken Biodge device 106 removes bridge formation rubbish, in order to which rubbish smoothly feeds intake blowing.In the present embodiment, broken Biodge device can be set to by Cylinder drives arc to break bridge plate pivoting and broken up rubbish is accumulated.

Rubbish fermentation and influenceed in blanking groove by furnace high-temperature, temperature has a certain degree of rise.In the utility model, It is preferred that, the temperature detector provided with rubbish temperature in detect tank in blanking groove, to monitor temperature in groove in real time, it is to avoid temperature Cause damage in incineration firing caused by too high, multiple-grooved body wall face.Blanking groove includes stage casing blanking groove 103 and hypomere blanking groove 104, It is easy to coordinate feed device so that rubbish is smoothly towards the furnace chamber direction bending extension of incinerator in the lower end of hypomere blanking groove 104 Into in burner hearth.Rubbish easily accumulates heat production at hypomere blanking groove 104, the bending of hypomere blanking groove formed neck provided with pair The air cooling portion that rubbish is cooled down, air cooling portion includes the cavity fitted with neck, during startup, and extraneous air compressor is to chamber Body-internal-circulation is passed through cooling gas, by heat transfer with realize to rubbish cool purpose.When temperature detector detects groove When interior temperature is increased to setting value, controller can be transmitted a signal to, controller control air cooling portion starts circulation and is passed through cooling sky Gas cools to groove internal rubbish herein, prevents it from burning.

In the utility model, as shown in figure 4, feed device 2 includes receiving the feed platform that doffer falls rubbish, give Expect the front connection incinerator of platform, feed platform is provided with push rod 203, and push rod 203 is driven by push cylinder 201.

Every incinerator is equipped with feed device 2, can control feeding coal, and each push rod 203 is driven by push cylinder 201. Feed device includes total travel pusher and short stroke pusher, total travel pusher and short stroke pusher by The independent push cylinder of correspondence connects the push rod 203 and formed.One group of total travel is used for pusher when incinerator startup and blowing out, Push amplitude is big, realizes complete pusher blanking, and another group of short stroke pusher is the pusher under normal running (operation) conditions, promotes width Section is spent, frequency is fast, two groups of travel switches can at the scene or master control room switching

Advanced to ensure that each push rod 203 is smoothly promoted, feed platform is moved provided with some limitation push rod 203 The directive wheel 202 in direction, plays certain support and guide effect, push rod can be enable smoothly to move.The front end of push rod 203 is provided with and pushed away Block 205 is sent, the both sides of feed device 2 leave thermal expansion surplus, have several piece heating resisting metal to assemble in vertical direction, can inhale Receive thermal expansion.When push rod 203 completes a stroke, the rubbish remained on bed surface can be cleaned out.Such as the processing of rubbish Amount is very big, and the push cylinder 201 and the device of push rod 203 of feeding can be divided into several parallel strokes.

The first buffer spring 204 is also cased with push rod 203, plays a part of vibration reduction and cushioning in pushing course, it is ensured that The stability of feeding process.

It is fed provided with the leachate collection groove 3 for collecting percolate below platform, can be by the garbage leachate on platform Discharged after collection.

The intake section of burner hearth is hopper 101, and the blanking groove of bottom is the passage that rubbish enters incinerator.In this two parts Between install hopper door 102, control blanking simultaneously may also function as prevent air penetrate into stove in act on, can be in blowing out and hopper Prevent that combustion gas from spilling, extraneous air leaks into when being underfilled with.

In the utility model, the hopper 101 of doffer 1 and the angle of blanking groove are designed by mature consideration, To prevent rubbish from blocking to greatest extent；In order to prevent blocking, there is provided preventing the broken Biodge device 106 built bridge；Blanking groove has Certain height, blanking groove internal memory has the several meter Gao Du bed of material during operation, serves sealing function, in case air is infiltered in stove； Blanking groove is cooled down using air, prevents from stacking the rubbish after a couple of days and combustion is blended to produce at blanking groove with furnace high-temperature flue gas Burn.

Feed device 2 is used for rubbish being pushed into stoker surface from blanking groove.It has advantages below：When push rod 203 is complete During into a stroke, the rubbish remained on feed bed surface can be cleaned out.It is fed on bed surface and roller is housed so that push rod 203 can smoothly move, and the treating capacity of such as rubbish is very big, can be divided into several parallel strokes, prevent sanitary fill.

Hopper 101 is funnel shaped, can store the rubbish of about 1 hour or so burning amount, hopper 101 is provided with shooting Head and rubbish material position induction installation, avoid rubbish from taking for observing to be additionally provided with the rubbish material position in hopper and chute, hopper 101 The broken Biodge device 107 of bridge.Blanking groove vertical height direction, which can be stored, is provided with cover plate, blowing out at the top of a certain amount of rubbish, blanking groove When cover plate is closed, incinerator is isolated with refuse pit.Feed device 2 is located at the bottom of blanking groove, it is ensured that rubbish is uniform, On controllable entrance fire grate 4.Feed device 2 promotes rubbish to enter burner hearth by push rod 203.Fire grate can be adjusted by control system Section, the speed of motion and interval time can be measured and be set by control system.

As shown in figure 5, fire grate 4 is included in the drying fire grate 41 being sequentially arranged in incinerator, combustion grate 42 and after-flame stove Row 43, each fire grate dries fire grate 41, combustion grate 42 and burn-out grate 43 are respectively by connecting in arranged in step shape from high to low Drive device 44 in each fire grate both sides, which drives, to be moved back and forth, and rubbish is burned conveying by realization in incinerator.

As shown in fig. 6, this embodiment that the utility model is provided, drive device 44 is that hydraulic-driven or pneumatic actuation are filled Put, including driving cylinder 441, the push rod 443 that driving cylinder 441 is moved forward and backward by the connection promotion fire grate of connecting rod 442.

It is preferred that, connecting rod 442 has two connection ends, for the V-structure bar with certain angle, V-structure bar middle part It is rotatably coupled to by rotating shaft on bearing, one end connection driving cylinder 441 of V-structure bar, other end connection push rod 443. As shown in Figure 6, driving cylinder 441, connecting rod 442 and push rod 443 are in M type link positions, during driving, with rotating shaft position on bearing For center of rotation, it is push rod 443 towards fire grate direction that the tailpiece of the piston rod of driving cylinder 441, which protrudes through the bearing change of connecting rod 442, It is mobile, so as to promote fire grate to move.

In the utility model, it is preferred that the second buffer spring 444 is provided with push rod 443, is back and forth pushed away with mitigating fire grate Vibration during dynamic.

In the utility model, it is further preferred that drying fire grate 41, combustion grate 42 and the board face of burn-out grate 43 are downward It is in tilted layout, by the inclined mode in row face of fire grate, makes rubbish under gravity, by the drying fire grate of eminence through combustion furnace Arrange and transported to burn-out grate, effectively realize the course of conveying of rubbish on fire grate from the front to the back, from top to bottom, can be achieved with compared with The drive device of small driving force, drives the motion of whole fire grate, plays a part of reducing energy consumption.And rubbish can be realized in stove simultaneously Drying on row, burning and fully burn.

Support swing rod 45 is equipped with below each fire grate.

Fire grate 441 is dried, combustion grate 442 and burn-out grate 443 arrange the cloth that interlocks by travelling oven arrangement and stationary furnace Put and form.Fixed grate is fixed on fire-grating frame, and moving grate is driven by drive device 44 and carries out front-rear reciprocation movement.

Independent inlet air plenum 5 is provided with below per one-level fire grate.Control air stream is equipped with the pipeline that each inlet air plenum 5 is connected The flow air door of amount.Fire grate bottom is not alter wind between several independent air compartments, each air compartment mutually, and each air compartment is provided with independent flow Air door.Flow air door can individually adjust individual according to each fire grate institute individually with a control actuator to the combustion case in region The aperture of other air door, to realize optimal combustion efficiency.

Each inlet air plenum 5 is connected to sealed refuse pond by pipeline, and primary air fan 7 is by the air in garbage pool through pipeline point Each inlet air plenum 5 is not sent to.The air extracted using primary air fan 7 in garbage pool is passed through each air compartment and burnt, can relative drop Solve the stink in garbage pool, relatively environment-friendly and energy-conservation.

Inlet air plenum 5 is connected with grey blower fan, and the fine particle of air compartment is fallen into by fire grate gap, is introduced by deashing blower fan High-pressure blast is blown into slag releasing channel by putting grey passage.

Using SUN type fire grates, modularized design, maintenance simply, using high chromium material are cast, and service life is long.

Using intermediate flow SUN type fire grates, rubbish enters three sections of fire grates diagonally downward by feed hopper, be divided into dry section, Combustion zone, burnt zone, due to the crisscross motions between fire grate, rubbish are promoted downwards, rubbish is passed sequentially through on fire grate Regional, when rubbish enters another area by an area, plays a part of one big stand up and breaks up, until burning discharge stove Thorax.SUN types fire grate is constituted by drying fire grate 41, combustion grate 42, burn-out grate 43, the 1st section of dry fire grate be mainly used in dry, 2nd section of combustion grate, which is mainly used in burning, the 3rd section of burn-out grate, to be used to burn completely.Sufficient drop, profit are provided between each section Rubbish is broken up with the drop, stirred.

In the design of fire grate 4, by controlling thickness of feed layer, reduction fire grate is exposed, improves durability；Each fire grate has independent Inlet air plenum 5, air, which is evenly distributed, improves flammability；Grey reduction is fallen in fire grate gap, and clinker ignition loss is improved, less than≤ 3%, generally 1-2%.Using the utility model drive mechanism, fire grate jam can be avoided, come off, fire grate each other without friction, Reduce abrasion, drive it is bad.Flameholding, the activity time of fire grate is automatically adjusted by automatic combustion control system.

The rubbish newly sent into is mixed with spent rubbish in the presence of fire grate, while be dried and ignition process, Then garbage slag after burning is delivered to pit by falling slag well into water cooling mucking machine through jigging conveyer.

Rubbish hangs in doffer 1 by garbage crane from garbage pool, is fallen into by doffer 1, then through feed device 2 by rubbish Rubbish is pushed in incinerator 10, and leachate collection groove 3 receives percolate located at the lower section of feed device 2.Set in incinerator 10 There is fire grate 4, inlet air plenum 5 is provided with below fire grate 4.The air intake connection garbage pool of primary air fan 7, outlet air end connection inlet air plenum 5； Overfire air fan 9, burner hearth 6 top of the outlet air end of overfire air fan 9 through pipeline communication to incinerator 10 are connected with the upper end of incinerator 10； Incinerator rear is provided with flue gas purification system 11；TEMP of the incinerator 10 provided with start-up burner and detection in-furnace temperature Device.

According to the instruction of Combustion System, the feed device 2 of hydraulic cylinder type can be used, rubbish push-in is burnt by the speed of setting Burn in stove 10, rubbish is constantly stirred and incited somebody to action by the operation of fire grate 4 by the siege being made up of in stove fixed grate with motion fire grate It is pushed forward.Fire grate 4 includes drying fire grate successively in step arrangement, combustion grate and burn-out grate, distinguishes thereunder Provided with inlet air plenum 5 corresponding with each fire grate.Rubbish is by drying, burning and burn process in incinerator 10, and clinker is by burning Duan Houduan falls into mucking machine.

Control respectively is equipped with the pipeline for connecting each inlet air plenum 5 by primary air fan 7 and enters air stream in each inlet air plenum 5 The flow valve of amount.

Provided with the preheater 8 preheated to air on pipeline between primary air fan 7 and inlet air plenum 5.For combustion-supporting First air temperature is reached 200 DEG C~220 DEG C by steam preheating so that just enter the rubbish rapid draing of stove, catch fire and Burning.The excess air coefficient of incinerator is designed more than 1.5, with oxygen amount sufficient in holding furnace, reduces the generation of bioxin. In the top of incinerator 10, sprayed into by the high speed of high temperature secondary wind, flue gas is sufficiently disturbed, extended in burner hearth Residence time, to improve combustion position, it is ensured that flue-gas temperature reaches more than 850 DEG C, more than 2 seconds residence time in burner hearth 6.Cigarette The rear pipeline of gas cleaning system 11 is provided with EGR blower fans 12, and the outlet air end of EGR blower fans 12 is connected to the combustion of incinerator 10 by pipeline Burn the top of burner hearth 6, i.e. EGR blower fans and be exported to extraction on the flue of air-introduced machine 13 from smoke processing system, be all sent to secondary combustion Burn room.

Preheater 8 is two-part steam air heater, and regulating valve is provided with the entrance point pipeline of preheater 8, to control Air themperature processed.Using two-part steam air heater, one section heated by extracted steam from turbine, two sections taken out by superheater outlet Vapour is heated.Due to containing dust from the air that dump pit is extracted, therefore steam air heater is taken using light pipe and wide spacing Pipeline.

Incinerator combustion air fan by supply fire grate garbage combustion air primary air fan 7 and supply secondary combustion chamber combustible The overfire air fan 9 and EGR blower fans 12 of combustion air are constituted.Primary air fan 7 is evacuated at dump pit, after being preheated by primary air It is supplied to fire grate garbage to burn.Overfire air fan 9 is evacuated at the top of incinerator workshop, and EGR blower fans 12 are exported from smoke processing system Extracted on to the flue of air-introduced machine 13, be all sent to secondary combustion chamber.The combustion air flow for supplying fire grate each several part passes through preheating The bypass flow valve of device 8 is adjusted, and the temperature of corresponding main burning air can also realize control.

Primary air fan 7 extracts the air in rubbish storing hole, pressure in hole can be made to maintain negative pressure state, to prevent foul smell Escape.Feeding fire grate bottom inlet air plenum 5 after First air is heated to 220 DEG C through steam type airheater, hot-air by calorific value it is low, contain The high rubbish of water rate is effectively disturbed and just dried.Auxiliary air and EGR (flue gas recirculation) wind of after-burner is respectively by two Secondary blower fan 9 extracts incineration plants headspace and is exported to by smoke processing system on the flue of air-introduced machine 13 and extracted, as combustion-supporting Wind, is sprayed into burner hearth throat position by nozzle with very high speed, stirs flue gas, strengthens the disturbance of gas in burner hearth, it is ensured that The mixing of combustion gas, eliminates unburned volatile matter.

1 start-up burner is installed in furnace wall after incinerator, is used to burn furnace igniting.1 is installed on incinerator top Auxiliary burner, to ensure that flue gas reaches 850 DEG C of stops, 2 seconds states in incinerator burner hearth.

Start-up burner is made up of burner body, electronic ignition device, control panel and safety device, is arranged in rear wall every Stove sets 1.When burning furnace igniting in stove under without rubbish state, burner makes heater outlet temperature rise to after 600 DEG C, then throws Entering waste incineration makes furnace temperature slowly rise to more than nominal operating temperature (850 DEG C).If the Temperature Distribution of steep temperature rise stove material is also sent out Raw acute variation, because of the effect of thermal machine power, producer material surface is peeled off, and shortens the service life of refractory material, because This start-up burner should carry out periodically temperature adjustment to prevent the drastically change of furnace temperature.Identical during with starting is used during blowing out Start-up burner, makes furnace temperature slowly decline, and to prevent the drastically change of temperature, and makes the combustible remained on combustion grate complete Burning.The capacity of burner by igniting and stopping when heating and cooling the need for measure and determine, waste of low heating value burning can be provided Required heat supplement.Start-up burner can withdraw from incinerator manually.

Auxiliary burner is made up of burner body, electronic ignition device, control panel and safety device, is arranged in a side wall 1 is set per stove.Auxiliary burner is designed to keep the temperature of secondary combustion chamber more than 850 DEG C and gas residence time No less than 2 seconds.Start-up burner and auxiliary burner make fuel using diesel oil.Incinerator side wall is provided with auxiliary burner, cloth Put in adiabatic furnace, when the refuse thermal value for entering stove is relatively low so that when fire box temperature is less than 850 DEG C, the system will be automatically engaged.

To incineration firing state, operator can be by being arranged on the camera of incinerator rear end, in the industrial electro of Central Control Room Depending on upper observation.Incinerator combustion air is extracted out by air blower from garbage pool top, through steam air heater, is carried out two-stage and is added Hot (about 220 DEG C of air themperature), as First air, is introduced into the public air compartment of fire grate bottom, then enter through each air adjustment baffle plate Enter hearth combustion.In addition, First air also acts the effect of cooling fire grate.Secondary Air is extracted out by overfire air fan between incinerator, Sprayed into again through side nozzle before and after incinerator in stove.Burn away the refuse the primary air amounts of needs, changed by primary air fan frequency converter Motor speed is controlled, and secondary air flow equally changes motor speed to be controlled using frequency converter.It is combustion-supporting in order to control Air themperature, in the steam inlet of steam air heater, installs regulating valve.What steam air heater flowed out dredges Water, is directly entered oxygen-eliminating device.The clinker produced after waste incineration, is extinguished with water in mucking machine, cooled, then will by mucking machine Clinker is transferred out.Mucking machine uses water seal, to prevent air from being leak into by mucking machine in stove, it is ensured that combustion chamber draft.

A kind of refuse incineration control method, comprises the following steps：

1) starting ignition burner, burns furnace igniting, and burner makes heater outlet temperature rise to 600 DEG C；

2) waste incineration is put into by doffer, start-up burner makes furnace temperature slowly rise to and is not less than nominal operating temperature 850℃；

3) primary air fan extracts First air above garbage pool, and the preheated device of First air is sent after being heated to 200 DEG C~220 DEG C Enter fire grate bottom inlet air plenum；

4) overfire air fan is extracted out above incinerator and sprays into stove by nozzle above Secondary Air, then the burner hearth through incinerator It is interior；

5) EGR blower fans are discarded what is discharged by flue gas purification system through circulating combustion profit above nozzle penetrating burner hearth With；

6) clinker is discharged by slag notch after the completion of burning, and is shut down again after slowly reducing in-furnace temperature.

Flue gas after burning, realizes fully burning, reduces CO content, and make flue gas 850 after being stirred through Secondary Air Stopped more than 2 seconds under DEG C environment, to ensure that bioxin is fully decomposed.

Auxiliary burner is additionally provided with incinerator 10.If temperature sensor detects in-furnace temperature and is less than in burning process Nominal operating temperature, then auxiliary burner, which starts, lifts in-furnace temperature to nominal operating temperature.

Each grate area waste incineration situation in incinerator is monitored by monitoring camera, then passes through the flow of each inlet air plenum Valve regulation control enters the air capacity of each air compartment.

A part helps combustion air to be introduced through primary air fan 7 above dump pit, is preheated through two-stage steam type airheater To about 220 DEG C, into the inlet air plenum 5 of the bottom of fire grate 4, it is combustion-supporting that the air vent through fire grate 4 enters burner hearth.Overfire air fan 9 is provided separately A part of combustion air, Secondary Air air draught from dump pit or on the spot is entered through overfire air jet by overfire air fan 9 and burned Stove.

In the first exhaust gases passes of incinerator, the ammoniacal liquor progress SNCR denitration for burning the high-temperature flue gas produced and penetrating is anti- Should.High-temperature flue gas after denitration is after waste heat boiler carries out heat exchange, and flue-gas temperature is cooled to 190~230 DEG C or so, cold But the flue gas after enters the half dry type reaction tower of flue gas purification system 11 by flue, is filled with the cooling water and slaked lime powder of penetrating It is removed after dividing the neutralization reaction of HCl, SO2 and Ca (OH) 2 in mixing, flue gas.After the reacted tower neutralization reaction of high-temperature flue gas, enter One step is cooled to 140~160 DEG C and enters sack cleaner.Activated carbon is provided with flue between sack cleaner and reaction tower Jet mixer, can be further because the filter bag fiber surface of sack cleaner has one layer of Ca (OH) 2 and active carbon powder The material such as acidic materials and bioxin and heavy metal is removed, and removes dust, flue dust (flying dust under being separated) delivers to flying dust Processing system carries out curing process.Flue gas is discharged into chimney by air-introduced machine 13 after sack cleaner is clean and enters air.

Incinerator is provided with auxiliary burner, to keep flue gas temperature of hearth outlet more than 850 DEG C, when the calorific value of rubbish During ignition temperature that is relatively low and being unable to reach more than 850 DEG C, according to the feedback information of temperature measuring equipment in incinerator, it can throw automatically Enter operation.

The percolate collected by garbage warehouse, delivered to after concentration Sewage Disposal processing it is up to standard after reuse, as following The moisturizing of ring cooling water, realizes wastewater zero discharge.

Clinker is delivered to cement plant with flying dust and used as cement raw material, or clinker take-away is done into building material, by flying dust Carry out landfill disposal after chelating solidification.

Waste heat boiler absorbs the heat in high-temperature flue gas by working medium of water, produces 4.00MPa, 400 DEG C of steam, steam supply wheel Generating set generates electricity.The electric power of generation is except for our factory, in addition to, excrescent electric power sends into area power grid.

Rubbish is hung in from garbage pool by garbage crane and hopper is put into after hopper.According to the instruction of Combustion System, hydraulic pressure is used Rubbish is pushed into stove by formula drawing-in device by the speed of setting, the siege being made up of in stove fixed grate with motion fire grate, is passed through Rubbish is constantly stirred and pushes it against advance by the operation of fire grate.By drying, burn and burn process, clinker is after burning segment End falls into mucking machine.

The utility model refuse burning system, from blanking to burning, using effect is good, is greatly improved the burning effect of rubbish Rate, with preferable application prospect.

The utility model is exemplarily described above in conjunction with accompanying drawing, but the utility model be not limited to it is above-mentioned Mode, as long as conceiving the improvement of the various unsubstantialities carried out with technical scheme using method of the present utility model or directly applying In other occasions, all fall within protection domain of the present utility model.

Claims (22)

1. a kind of refuse burning system, it is characterised in that：Set in doffer including connecting incinerator furnace chamber, the incinerator Have below burning fire grate, the fire grate provided with the inlet air plenum for being passed through burning wind, the incinerator rear connects flue gas by pipeline Cleaning system, flue gas is discharged after being purified through the flue gas purification system.

2. according to the refuse burning system described in claim 1, it is characterised in that：It is provided with below the doffer by rubbish The feed device pushed in incinerator.

3. according to the refuse burning system described in claim 1, it is characterised in that：The doffer includes hopper and blanking Groove, the hopper door provided with control blanking between the hopper and blanking groove.

4. according to the refuse burning system described in claim 3, it is characterised in that：The blanking groove include stage casing blanking groove and under Section blanking groove, furnace chamber direction bending extension of the hypomere blanking groove towards incinerator.

5. according to the refuse burning system described in claim 4, it is characterised in that：The neck formed in the hypomere blanking groove bending Portion is provided with the air cooling portion cooled down to rubbish.

6. according to the refuse burning system described in any one of claim 3 to 5, it is characterised in that：It is provided with the hopper by heap The broken Biodge device that long-pending bridge formation rubbish is broken up.

7. according to the refuse burning system described in claim 2, it is characterised in that：The feed device includes receiving doffer The feed platform of rubbish is fallen, the front of the feed platform connects the incinerator, and the feed platform is provided with push rod, The push rod is driven by push cylinder.

8. according to the refuse burning system described in claim 7, it is characterised in that：The feed device includes total travel pusher Structure and short stroke pusher, the total travel pusher and short stroke pusher are by the independent push cylinder of correspondence The push rod is connected to be formed.

9. according to the refuse burning system described in claim 8, it is characterised in that：The feed platform is provided with some limitation institutes State the directive wheel of the push rod direction of motion.

10. according to the refuse burning system described in claim 9, it is characterised in that：Provided with collection rubbish below the feed platform The leachate collection groove of rubbish percolate.

11. according to the refuse burning system described in claim 1, it is characterised in that：The fire grate fires including conveying garbage successively The drying fire grate of burning, combustion grate and burn-out grate, the stepped arrangement of each fire grate.

12. according to the refuse burning system described in claim 11, it is characterised in that：The dry fire grate, combustion grate and combustion Fire grate to the greatest extent conveys rubbish by the drive device powered motion for being connected to each fire grate both sides.

13. according to the refuse burning system described in claim 12, it is characterised in that：The drive device includes driving cylinder, institute State driving cylinder and the push rod for promoting the fire grate to move forward and backward is connected by connecting rod.

14. according to the refuse burning system described in claim 13, it is characterised in that：The connecting rod is V-structure bar, described It is rotatably coupled in the middle part of V-structure bar by rotating shaft on bearing, one end of the V-structure bar connects the driving cylinder, The other end connects the push rod.

15. according to the refuse burning system described in claim 14, it is characterised in that：The push rod is provided with the second buffering elastic Spring.

16. according to the refuse burning system described in claim 15, it is characterised in that：Each fire grate tilts down cloth Put, support swing rod is equipped with below each fire grate.

17. according to the refuse burning system described in any one of claim 11 to 16, it is characterised in that：Under the fire grate per one-level Side is provided with independent inlet air plenum, and the air in garbage pool is sent to each inlet air plenum through pipeline by primary air fan respectively, by described Primary air fan connects and the flow air door that control respectively enters air mass flow in each inlet air plenum is equipped with the pipeline of each inlet air plenum.

18. according to the refuse burning system described in claim 17, it is characterised in that：The primary air fan and the inlet air plenum it Between pipeline be provided with the preheater that is preheated to air.

19. according to the refuse burning system described in claim 18, it is characterised in that：The burning furnace upper end is connected with Secondary Air Machine, the air that the overfire air fan is extracted at the top of the incinerator is sent to auxiliary cigarette above the burner hearth of the incinerator through pipeline Gas burns.

20. according to the refuse burning system described in claim 19, it is characterised in that：On the pipeline of the flue gas purification system rear Provided with EGR blower fans, the EGR blower fans outlet air end is connected to by pipeline above the burner hearth of the incinerator.

21. according to the refuse burning system described in claim 20, it is characterised in that：The burner hearth of the incinerator is provided with one section The burner hearth throat to be formed to inside contracting, the air of overfire air fan and/or the EGR blower fan is connected through pipeline with the burner hearth throat.

22. according to the refuse burning system any one of claim 1-5,7-16,18-21, it is characterised in that：It is described to burn Stove is burnt provided with start-up burner, auxiliary burner and the temperature sensor for detecting in-furnace temperature.