CN209054560U - Garbage derivatived fuel boiler high temperature combustion system - Google Patents

Abstract

The utility model discloses a kind of garbage derivatived fuel boiler high temperature combustion systems, including furnace body, burner hearth is equipped in the furnace body, the furnace body is equipped with slag outlet and exhanst gas outlet, the fire grate for stretching out the burner hearth setting is installed in the burner hearth, it is sequentially arranged uniform cloth sand device, fuel feeding device and gasified combustion apparatus along fire grate conveying direction above the fire grate outside the burner hearth, the uniform cloth sand device is connected with layer of sand cloth bucket；The utility model can increase layer of sand as bed course before charging on fire grate, on the one hand can play the role of being spaced ignition temperature, ablation of the high temperature in gasified combustion apparatus to fire grate is effectively reduced, on the other hand initial stage can be prevented to be fused into the fuel of liquid to fire grate gap leakage, improve fuel combustion utilization rate, it is therefore prevented that corrosion of the fuel to fire grate structure；The utility model has well solved problem of the existing technology, economic value and social value with higher.

Description

Garbage derivatived fuel boiler high temperature combustion system

Technical field

It is burnt the utility model relates to boiler technology field more particularly to a kind of garbage derivatived fuel with boiler high temperature and is System.

Background technique

With the rapid raising of China's rapid development of economy and living standards of the people, domestic waste, industrial refuse Equal yields sharply increase, caused by environmental pollution get worse.Processing rubbish achieves innoxious, recycling and decrement Change, oneself becomes the significant problem that China must solve.

The maximum problem of garbage disposal is that its ingredient is heterogeneous and each ingredient properties differ greatly, as include in rubbish paper, Timber, cloth, castoff of food and drink, rubber, plastics, metal, sandstone, glass etc., and because of the differences such as area and rubbish source, rubbish The ratio of each ingredient is also not quite similar in rubbish.Multiple countries produce RDF (rubbish using combustable organic component in rubbish is extracted at present Derivatived fuel) measure, RDF is used for the fields such as cement manufacture, Heat Supply Engineering and generation engineering, to realize the money of garbage disposal Sourceization utilizes.

Inventor is dedicated to the research and application of incineration firing technology, has developed including rubbish is carried out magnetic separation, cutting, is washed in a pan Wash flotation, cleaning, extrusion dehydration and etc. waste disposal method, wherein eluriate flotation step mainly utilize specific gravity different Principle separates specific gravity in rubbish compared with the light and heavier ingredient of specific gravity, and the lighter ingredient of specific gravity is mainly above-mentioned combustable organic Component, including paper, timber, cloth, rubber, plastics etc.；The heavier ingredient of specific gravity is mainly sand.Above-mentioned flammable organic component can For producing RDF, inevitably there is organic pollutant (such as dioxin, polycyclic aromatic hydrocarbon and more chlorine in RDF in combustion Biphenyl etc.) generation.Temperature (Temperature), residence time (Time) and turbulent (Turbulent) quilt are simultaneously known as " 3T ", It is the key factor for inhibiting organic pollutant to generate in RDF combustion process, that is, combustion process is needed to guarantee sufficiently high temperature, There are certain residence time in burning situation, organic pollutant can mix with air sufficiently organic pollutant.

Inventor, can be to fire grate structure in practice, it has been found that guarantee organic pollutant burning furnace combustion temperature totally Cause very serious ablation, most of melt can occur first and be in a liquid state and lack for fire grate well damage, and when RDF burns The phenomenon that part direct gasification, the fuel of liquid easily infiltrate into fire grate gap, are on the one hand difficult to be burned utilization again, on the other hand Fuel easily corrodes fire grate structure, is further exacerbated by fire grate damage.And the ignition temperature in combustion furnace is reduced, RDF can not fire again It burns down complete, it is difficult to avoid the generation of above-mentioned organic pollutant, above-mentioned contradictory problem, which becomes, promotes and applies RDF combustion technology A great problem.

Utility model content

The technical problem to be solved by the utility model is to provide one kind effectively to drop while guaranteeing furnace combustion temperature Low fire grate ablation and corrosion and the garbage derivatived fuel boiler high temperature combustion system for preventing liquid fuel from leaking.

In order to solve the above technical problems, the technical solution of the utility model is: garbage derivatived fuel is burnt with boiler high temperature System, including furnace body, are equipped with burner hearth in the furnace body, and the furnace body is equipped with slag outlet and exhanst gas outlet, in the burner hearth The fire grate for stretching out burner hearth setting is installed, along fire grate conveying direction successively cloth above the fire grate outside the burner hearth It is equipped with uniform cloth sand device, fuel feeding device and gasified combustion apparatus, the uniform cloth sand device is connected with layer of sand cloth bucket.

The layer of sand cloth bucket is connected with placing sand screening circulation supply equipment and/or elutriation as a preferred technical solution, Sand feedway.

The placing sand screening circulation supply equipment includes screening plant as a preferred technical solution, the screening plant Feed end connect the slag outlet, the discharge end of the screening plant connects the layer of sand cloth bucket, the screening plant It is connected with recrement output device.

The screening plant includes vibrating screen as a preferred technical solution, the vibrating screen be equipped with two layers of compass screen surface, two The compass screen surface is in lateral V-arrangement arrangement, and the mesh number of compass screen surface described in upper layer is less than the mesh number of compass screen surface described in lower layer, compass screen surface described in upper layer Feeding end connects the slag outlet, and the discharge end of compass screen surface described in lower layer connects the layer of sand cloth bucket.

The recrement output device includes the recrement output below compass screen surface described in lower layer as a preferred technical solution, Belt, the recrement output belt stretch out the discharge end setting of compass screen surface described in upper layer.

The layer of sand cloth bucket is also connected with coal-fired feedway as a preferred technical solution,.

The uniform cloth sand device is connected with the fire grate as a preferred technical solution,.

The fuel feeding device includes the loading channel along fire grate conveying direction arrangement as a preferred technical solution, It is equipped with the fuel cloth bucket connecting with the loading channel above the loading channel, it is closed in the loading channel to be slidably installed There is expeller, the expeller is fixedly connected with several pusher connecting rods, the pusher far from one end of the gasified combustion apparatus The outer end of connecting rod is connected with pusher connecting plate jointly, and the pusher connecting plate is connected with reciprocal material-pulling device；The charging is logical It is equipped with bed course between road and the fire grate and passes through gap.

The exhanst gas outlet is connected with deduster as a preferred technical solution, the dust discharge end of the deduster with it is described Flue dust back-burning device is connected between gasified combustion apparatus or the fuel feeding device.

The gasified combustion apparatus includes gasification, and combustion chamber as a preferred technical solution, is set on the gasification, and combustion chamber Have and the corresponding bed course entrance of the uniform cloth sand device, charging entrance corresponding with the fuel feeding device and with the furnace The corresponding flame slag-drip opening of thorax；The cavity wall of the gasification, and combustion chamber is equipped with heat insulation and heat control device, the chamber of the gasification, and combustion chamber Top is equipped with the air lance of several directive fuel surfaces, and the chamber top that the air lance passes through the gasification, and combustion chamber is connected with Air supply device；The lower end edge fuel conveying direction of the air lance gradually decreases.

By adopting the above-described technical solution, garbage derivatived fuel boiler high temperature combustion system, including furnace body, the furnace It is equipped with burner hearth in vivo, the furnace body is equipped with slag outlet and exhanst gas outlet, and the stretching burner hearth is equipped in the burner hearth and is set The fire grate set has been sequentially arranged uniform cloth sand device, combustion along fire grate conveying direction above the fire grate outside the burner hearth Material feeding device and gasified combustion apparatus, the uniform cloth sand device are connected with layer of sand cloth bucket；The utility model can feed On the one hand the preceding layer of sand that increases on fire grate can play the role of being spaced ignition temperature, gasification, and combustion dress is effectively reduced as bed course Ablation of the high temperature to fire grate in setting, the fuel that initial stage on the other hand can be prevented to be fused into liquid are improved to fire grate gap leakage Fuel combustion utilization rate, it is therefore prevented that corrosion of the fuel to fire grate structure；The utility model has well solved prior art presence Problem, economic value and social value with higher.

Detailed description of the invention

Following drawings are only intended to schematically illustrate and explain the present invention, does not limit the model of the utility model It encloses.Wherein:

Fig. 1 is the schematic cross-sectional view of the utility model embodiment one；

Fig. 2 is the left view enlarged structure schematic diagram in Fig. 1 at expeller and pusher connecting rod；

Fig. 3 is the structural schematic diagram of the utility model embodiment two；

Fig. 4 is the enlarged diagram of placing sand screening circulation supply equipment in the A-A structure of Fig. 3；

Fig. 5 is the structural schematic diagram of the utility model embodiment three.

In figure: 1- furnace body；11- burner hearth；12- exhanst gas outlet；13- scraper slagging machine；14- slag outlet；2- fire grate；3- gas Change burner；31- gasification, and combustion chamber；32- cooling jacket；33- air lance；34- cloth wind chamber；4- fuel feeding device；40- Fuel cloth bucket；41- loading channel；42- expeller；43- pusher connecting rod；44- pusher connecting plate；The reciprocal bull stick of 45-；46- is past Physical pendulum bar；The uniform cloth sand device of 5-；50- layer of sand cloth bucket；6- placing sand sieves circulation supply equipment；61- screening plant；611- vibration Dynamic sieve；612- compass screen surface；613- recrement exports belt；62- screens conveyer；63- loopback conveyer；7- deduster.

Specific embodiment

With reference to the accompanying drawings and examples, the utility model is further described.In the following detailed description, only pass through Bright mode describes certain exemplary embodiments of the utility model.Undoubtedly, those skilled in the art can be with It recognizes, it, can be with a variety of different modes to described without departing from the spirit and scope of the utility model Embodiment is modified.Therefore, attached drawing and description are regarded as illustrative in nature, rather than the protection for limiting claim Range.

Embodiment one: as depicted in figs. 1 and 2, garbage derivatived fuel boiler high temperature combustion system, including furnace body 1, it is described Burner hearth 11 is equipped in furnace body 1, the furnace body 1 is equipped with slag outlet 14 and exhanst gas outlet 12, is equipped with and stretches in the burner hearth 11 The fire grate 2 that the burner hearth 11 is arranged out.Scraper plate corresponding with the slag output end of the fire grate 2 is equipped with before certain slag outlet 14 Mucking machine 13, the exhanst gas outlet 12 connect exhaust gas processing device.The slag outlet 14, described is scraped the exhanst gas outlet 12 The well-known technique that plate mucking machine 13 and the exhaust gas processing device are well known to those skilled in the art, details are not described herein.

Uniform cloth sand device has been sequentially arranged along 2 conveying direction of fire grate above the fire grate 2 outside the burner hearth 11 5, fuel feeding device 4 and gasified combustion apparatus 3, the uniform cloth sand device 5 are connected with layer of sand cloth bucket 50.

The gasified combustion apparatus 3 includes gasification, and combustion chamber 31, and the gasification, and combustion chamber 31 is equipped with and the uniform cloth The corresponding bed course entrance of the sand device 5 and corresponding charging entrance of the fuel feeding device 4 and spray corresponding with the burner hearth 11 Fire row cinder notch.The cavity wall of the gasification, and combustion chamber 31 is equipped with heat insulation and heat control device, and heat insulation and heat control device described in the present embodiment is Cooling jacket 32 in 31 cavity wall of gasification, and combustion chamber is set, and the cooling jacket 32 can will be in the gasification, and combustion chamber 31 The heat progress that burning generates is initial to be absorbed and utilized, and can prevent the high temperature in the gasification, and combustion chamber 31 to cavity wall simultaneously Ablation, the cooling jacket 32 connect circulating pump etc., what the circulating pump was well known to those skilled in the art, no longer superfluous herein It states and is being not shown in the figure.Certain heat insulation and heat control device can also be to be fixed in the cavity wall of the gasification, and combustion chamber 31 Flame retardant coating.The chamber top of the gasification, and combustion chamber 31 is equipped with the air lance 33 of several directive fuel surfaces, the air spray The chamber top that pipe 33 passes through the gasification, and combustion chamber 31 is connected with air supply device.The air supply device includes being arranged in the gasification combustion The cloth wind chamber 34 outside the chamber top of chamber 31 is burnt, the cloth wind chamber 34 is connected with blower, and the blower is well-known technique, no longer superfluous herein It states and is being not shown in the figure.The lower end edge fuel conveying direction of the air lance 33 gradually decreases.

The working principle of the gasified combustion apparatus 3 are as follows: combustible material is added to the fire grate by the fuel feeding device 4 After on 2, combustible material burns since surface layer, and the air lance 33 makes the combustion on surface to combustible material surface forced air supply Layer oxygen-enriched combusting is burnt, a large amount of heat is generated and is blown to the internal layer of combustible material, the combustible material of internal layer is thermally decomposed, melted Change the raw fuel gas of not stopping pregnancy, just includes dioxin, polycyclic aromatic hydrocarbon and Polychlorinated biphenyls etc. in fuel gas, fuel gas is by institute It states fire grate 2 described in the wind band trend of air lance 33 to move, by the rebound of the fire grate 2, passes through combustible material surface layer again, Fuel gas is further cracked in the process, and cracked gas can not escape, under the abundant oxygen supply of the air lance 33 Burning rapidly, above-mentioned entire combustion process generate higher temperature, and at these elevated temperatures, all macromolecular functional groups continue to crack And burn, all pernicious gases such as dioxin is completely broken down, with the conveying of the fire grate 2, combustible material is constantly to institute The movement of 11 direction of burner hearth is stated, material constantly burns until becoming the ashes of the carbon containing small part and falling from the slag output end of the fire grate 2 It is discharged on to the scraper slagging machine 13, the flame of high temperature is sprayed from the flame slag-drip opening, and benefit is carried out in the burner hearth 11 With.Can be seen that from those skilled in the art in above-mentioned principle can form ideal can decompose in the gasified combustion apparatus 3 The high temperature of organic pollutant, and because of the principle of downward air feed, organic pollutant residence time in burning situation is longer and can It mixes well with air, so organic pollutant can be sufficiently burned in the gasified combustion apparatus 3, burning tail is greatly reduced The content of harmful substance in gas, gasified combustion apparatus 3 described in the present embodiment can be carried out effectively for RDF and other combustable organic objects Burning utilizes.

Sand in layer of sand cloth bucket 50 described in the present embodiment is will to eluriate separating step elutriation by eluriating sand feedway Sand supply out, the elutriation sand feedway can be screw conveyor, or belt conveyor etc., it is described to wash in a pan Washed-out sand feedway is well known to those skilled in the art, and details are not described herein and is being not shown in the figure.Certain the present embodiment Sand in the layer of sand cloth bucket 50 can also be the addition of artificial or other sand loading machinery.

The uniform cloth sand device 5 includes that two lateral rotations are mounted on cloth sand roller fire grate 2 top and rotated towards each other, It is circumferentially uniformly provided with several band sand plates in the cloth sand roller, is equipped with cloth sand shield at the lower port of the layer of sand cloth bucket 50. At sand free accumulation to the two cloth sand rollers in the layer of sand cloth bucket 50, the cloth sand roller rotation, the band sand strip is moved Sand rotation, and after turning an angle, sand is because self weight is gradually poured down from the end with sand plate, in the fire grate 2 One layer of bed course of upper formation, when the cloth sand roller does not rotate, the band sand plate in the two cloth sand rollers can be to the layer of sand cloth Sand in hopper 50 plays the role of leakproof.What the uniform cloth sand device 5 was well known to those skilled in the art, structure and original Details are not described herein for reason.The uniform cloth sand device 5 is connected with the fire grate 2, i.e., the described cloth sand roller and the fire grate 2 It can be with using transmission connection, the uniform cloth sand devices 5 described in this way such as gear drive, chain conveyer or belt transmissions between power end With the synchronous speed for realizing cloth of the conveying speed of the fire grate 2, make the bed course being arranged on the fire grate 2 more evenly.

The fuel feeding device 4 includes the loading channel 41 along 2 conveying direction of fire grate arrangement, and the loading channel 41 connects Connect the charging entrance.The fuel cloth bucket 40 connecting with the loading channel 41 is equipped with above the loading channel 41, it is described Closed in loading channel 41 to be slidably fitted with expeller 42, the one end of the expeller 42 far from the gasified combustion apparatus 3 is solid Surely several pusher connecting rods 43 are connected with, the outer end of the pusher connecting rod 43 is connected with pusher connecting plate 44 jointly.The present embodiment The uniform cloth sand device 5 is located at 41 oblique upper of loading channel, so the pusher connecting rod 43 is across the uniform cloth 5 lower section of sand device, knockout gap is formed between the pusher connecting rod 43, is guaranteed that sand can normally be fallen on the fire grate 2 and is formed Bed course.Bed course is equipped between the loading channel 41 and the fire grate 2 by gap, the bed course connects the pad by gap Layer entrance.Certain uniform cloth sand device 5 may also be arranged on 41 obliquely downward of loading channel, and the pusher connecting rod 43 passes through Above the uniform cloth sand device 5, knockout gap is also formed between the pusher connecting rod 43, knockout gap described herein guarantees sand It can normally be fallen in the layer of sand cloth bucket 50 in the uniform cloth sand device 5.

The pusher connecting plate 44 is connected with reciprocal material-pulling device.The reciprocal material-pulling device includes what lateral rotation was installed Reciprocating drive shaft, it is radially fixed on the reciprocating drive shaft to be connected with reciprocal bull stick 45, the end of the reciprocal bull stick 45 and institute It states and is connected with reciprocal swing rod 46 between pusher connecting plate 44.The reciprocating drive shaft can also be driven with the power end of the fire grate 2 Connection.Certain reciprocal material-pulling device can also be the structure for including reciprocal drive cylinder, and the reciprocal drive cylinder connection is changed To solenoid valve.

The working principle of the present embodiment are as follows: provide elutriation by the elutriation sand feedway in the layer of sand cloth bucket 50 The sand filtered out.Sand is uniformly laid on the fire grate 2 through the uniform cloth sand device 5 and forms bed course, and bed course is with the fire grate 2 It is reached in the gasification, and combustion chamber 31 through the bed course by gap；Combustible material, it is as organic in filtered out in RDF or rubbish Combustible component etc. is sent into the gasification, and combustion chamber 31 by the fuel feeding device 4 and is present on bed course, and combustible material exists Full combustion in the gasification, and combustion chamber 31, the theory of combustion have been illustrated before, and details are not described herein.Combustible material exists Stopped when being fused into liquid in combustion process by bed course, be not easy to penetrate into the fire grate 2, and by high temperature and filled under the blocking of bed course The effect of sufficient oxygen is sufficiently vaporized burning.The bed course of lime-ash and its underpart after burning falls into the scraper slagging machine jointly 13 send out, and submitting is the sand slag mixture that tailings and lime-ash are formed.Sand slag mixture is through described in scraper slag removing machine submitting It is sent after slag outlet 14 to other processing equipments and is handled.In above process, the sand filtered out is eluriated to fire in the gasification At a high temperature of burning chamber 31, the organic matter adhered on sand grains is also sufficiently pyrolyzed and is burnt, and reduces the intensity of subsequent sand cleaning, and same When sterilization functions are played to sand, the processing difficulty of sewage after cleaning sand can be reduced, killed two birds with one stone.

On the one hand the present embodiment can play interval ignition temperature using layer of sand is increased on the fire grate 2 as bed course Effect, is effectively reduced ablation of the high temperature to the fire grate 2 in the gasified combustion apparatus 3, and initial stage on the other hand can be prevented molten The fuel of liquid is melted into the gap leakage of the fire grate 2, improves fuel combustion utilization rate, it is therefore prevented that fuel is to 2 structure of fire grate Corrosion.The present embodiment is applicable to RDF and the burning of other combustable organic objects utilizes, and has very high economic value and society It can be worth.

Layer of sand cloth bucket 50 described in the present embodiment is also connected with coal-fired feedway, and the fire coal feedway can be skin Band conveyer, or drag conveyor.After the fire coal feedway is opened, it can be synchronized in the layer of sand cloth bucket 50 Storage is a large amount of coal-fired, and fire coal forms the mixing of coal sand under the action of uniform cloth sand device 5 together with sand on the fire grate 2 Bed course.Because there may be blocky combustible or combustible material itself the moisture contents such as such as duroplasts, onal band in combustible material It is more, so quickly forming high-temp combustion environment, the present embodiment for the ignition temperature in gasification, and combustion chamber 31 described in fast lifting It will be first laid on the fire grate 2 containing a large amount of coal-fired coal sand bedding courses, be utilized using the coal-fired feedway at the beginning of burning Fire coal reaches combustion-supporting effect, has further widened the applicable surface of the present embodiment in this way.The fire coal feedway is this field skill Known to art personnel, therefore it is being not shown in the figure.

Embodiment two: as shown in Figure 3 and Figure 4, the present embodiment and embodiment one the difference is that: the layer of sand cloth Bucket 50 is connected with placing sand screening circulation supply equipment 6, and placing sand described in the present embodiment is sand, fire coal and biomass on the fire grate 2 The clinker generated after equal compounding substances burning.The placing sand screening circulation supply equipment 6 includes screening plant 61, the screening dress The feed end for setting 61 connects the slag outlet 14, and the discharge end of the screening plant 61 connects the layer of sand cloth bucket 50, institute It states screening plant 61 and is connected with recrement output device.The present embodiment signal is using the screening conveyer 62 that is obliquely installed by the furnace The sand slag mixture of 14 discharge of slag outlet is transported to the feed end of the screening plant 61, is mentioned by loopback conveyer 63 and loopback The available sand that the discharge end of the screening plant 61 sifts out is recycled to the layer of sand cloth bucket 50 and recycled by the machine of liter.When The right screening plant 61 can also be placed directly at the slag outlet 14, i.e., the sand slag mixture that the described slag outlet 14 is discharged The feed end of the screening plant 61 is directly fallen in, it then can by what is sifted out by the loopback conveyer 63 and loopback elevator It is recycled with sand loopback.

The screening plant 61 includes vibrating screen 611, and the vibrating screen 611 is equipped with two layers of compass screen surface 612, two compass screen surfaces 612 arrange in lateral V-arrangement, and the mesh number of compass screen surface 612 described in upper layer is less than the mesh number of compass screen surface 612 described in lower layer, compass screen surface described in upper layer 612 feeding end connects the slag outlet 14 by the screening conveyer 62, and the discharge end of compass screen surface 612 described in lower layer passes through The loopback conveyer 63 connects the layer of sand cloth bucket 50 with loopback elevator.Because the sand being routed on the fire grate 2 is wanted Play the role of heat-insulated and prevents leakage two, so needing to screen out the biggish particle of partial size prevents layer of sand bed course gap larger, The lesser lime-ash of partial size or fine sand, which are screened out, prevents layer of sand bed course itself from leaking into 2 gap of fire grate, so this implementation Compass screen surface 612 described in example upper layer is for screening out the biggish particle of partial size, and mesh number is 8~14, and the small particle of partial size drops down onto lower layer On the compass screen surface 612, compass screen surface 612 described in lower layer is 20~60 for screening out the smaller lime-ash of partial size, mesh number, will be available It is transmitted back in the layer of sand cloth bucket 50 after sand grains screening.The present embodiment, which is shown on the same vibrating screen 611, is arranged two The compass screen surface 612, certain screening plant 61 can also be two about 611 vibrating screens arrangements, the compass screen surface of two vibrating screens 611 612 also can also be used rotary screen etc. in lateral V-arrangement arrangement or the screening plant 61.

The vibrating screen 611 is connected with recrement output device, and the recrement output device includes being located at compass screen surface described in lower layer The recrement of 612 lower sections exports belt 613, and the recrement output belt 613 stretches out the discharge end setting of compass screen surface 612 described in upper layer, The biggish sand of partial size under the sieve of compass screen surface 612 described in lime-ash and the lesser sand grains of partial size, upper layer under the sieve of compass screen surface 612 described in lower layer The substance of grain or other such as metals, glass is all dropped down onto and is exported on the recrement output belt 613.The present embodiment illustrates institute It states recrement output belt 613 to be located at below 63 feed end of loopback conveyer, when the shutdown of loopback conveyer 63 or the vibrating screen When the 611 available sand quantity sifted out are larger, the sand sifted out can be overflowed from the feed inlet of loopback conveyer 63, be exported by the recrement Belt 613 is delivered to other equipment or place together.

The working principle of the present embodiment are as follows: be initially in the layer of sand cloth bucket 50 and fed by artificial or sand loading is mechanical etc. Sand, sand are uniformly laid on the fire grate 2 through the uniform cloth sand device 5 and form bed course, and bed course is with the fire grate 2 through the pad Layer is reached in the gasification, and combustion chamber 31 by gap；Combustible material is sent into the gasification, and combustion by the fuel feeding device 4 Chamber 31 is simultaneously present on bed course, combustible material full combustion in the gasification, and combustion chamber 31.Combustible material is in combustion process In stopped when being fused into liquid by bed course, be not easy to penetrate into the fire grate 2, and by high temperature and sufficient oxygen under the blocking of bed course Effect, is sufficiently vaporized burning.The bed course of lime-ash and its underpart after burning falls into the scraper slagging machine 13 jointly and sends out, and send It is out the sand slag mixture that tailings and lime-ash are formed.The sand slag mixture is sieved through placing sand screening circulation supply equipment 6 After choosing, available sand is sent into the layer of sand cloth bucket 50 and is recycled, the bulky grain that the vibrating screen 611 sifts out Solids and lime-ash are sent out by recrement output belt 613.

The present embodiment recycles sand, reduces the cost in addition purchasing sand, and the sand recycled is after screening, grain More preferably, heat-insulated and antiseep effect is more preferable for degree.

Because of the presence of the screening plant 61, the missing of the total amount of having of the sand of circulation, so the present embodiment can also make institute It states the connection of layer of sand cloth bucket 50 and eluriates sand feedway, the elutriation sand feedway also can be used as artificial, sand loading machinery etc. and mend The source except sand as sand is filled, it is certainly described to eluriate sand feedway for next sand also by high temperature degerming.Described in the present embodiment Layer of sand cloth bucket 50 can also connect coal-fired feedway, combustion-supporting to play the role of at the beginning to the fuel for being not easy to ignite.

Embodiment three: as shown in figure 5, the present embodiment and embodiment two the difference is that: the exhanst gas outlet 12 connects It is connected to deduster 7, is connected between the dust discharge end of the deduster 7 and the gasified combustion apparatus 3 or the fuel feeding device 4 It is connected to flue dust back-burning device.The exhaust end of the deduster 7 connects the exhaust gas processing device.The flue dust back-burning device includes Spiral transferring dirt machine.Because when incineration firing, there may be part metals in sand, metal switchs to gaseous state at high temperature, partially in institute State on the wall of burner hearth 11 cooling condensation, be partially discharged with flue gas, at the same in the floating ash for generation of burning also containing a small amount of carbon and its His solid matter, metal cooling in deduster 7 are mixed with flue dust.Flue dust mixture can be returned to institute by the flue dust back-burning device It states gasification, and combustion chamber 31 to be rekindled, a small amount of carbon is completely burned off, other solids can have part and sand slag mixture one It rises and carries out subsequent processing.The treatment process of flue dust, and smoke dust secondary burning can be not only reduced in this way, more reduce energy waste It is remained with harmful substance.Certain exhanst gas outlet 12 can also be directly connected to blower, and pass through the cloth wind chamber 34 by blower Flue dust is directly sprayed into the gasification, and combustion chamber 31 by the air duct.

The advantages of basic principles and main features and the utility model of the utility model have been shown and described above.Current row The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments Only illustrate the principles of the present invention, on the premise of not departing from the spirit and scope of the utility model, the utility model is also It will have various changes and improvements, these various changes and improvements fall within the scope of the claimed invention.The utility model Claimed range is defined by the appending claims and its equivalent thereof.

Claims (10)

1. garbage derivatived fuel boiler high temperature combustion system, including furnace body, the furnace body is interior to be equipped with burner hearth, set on the furnace body There are slag outlet and exhanst gas outlet, the fire grate for stretching out the burner hearth setting is installed, it is characterised in that: be located at institute in the burner hearth It states and has been sequentially arranged uniform cloth sand device, fuel feeding device and gasification along fire grate conveying direction above the fire grate outside burner hearth Burner, the uniform cloth sand device are connected with layer of sand cloth bucket.

2. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the layer of sand cloth Bucket is connected with placing sand screening circulation supply equipment and/or eluriates sand feedway.

3. garbage derivatived fuel as claimed in claim 2 boiler high temperature combustion system, it is characterised in that: the placing sand screening Circulation supply equipment includes screening plant, and the feed end of the screening plant connects the slag outlet, the screening plant Discharge end connects the layer of sand cloth bucket, and the screening plant is connected with recrement output device.

4. garbage derivatived fuel as claimed in claim 3 boiler high temperature combustion system, it is characterised in that: the screening plant Including vibrating screen, the vibrating screen is equipped with two layers of compass screen surface, and two compass screen surfaces are in lateral V-arrangement arrangement, the mesh of compass screen surface described in upper layer Number is less than the mesh number of compass screen surface described in lower layer, and the feeding end of compass screen surface described in upper layer connects the slag outlet, compass screen surface described in lower layer Discharge end connects the layer of sand cloth bucket.

5. garbage derivatived fuel as claimed in claim 4 boiler high temperature combustion system, it is characterised in that: the recrement output Device includes the recrement output belt below compass screen surface described in lower layer, and the recrement output belt stretches out compass screen surface described in upper layer Discharge end setting.

6. garbage derivatived fuel as claimed in claim 2 boiler high temperature combustion system, it is characterised in that: the layer of sand cloth Bucket is also connected with coal-fired feedway.

7. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the uniform cloth sand Device is connected with the fire grate.

8. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the fuel charging Device includes the loading channel along fire grate conveying direction arrangement, is equipped with above the loading channel and connect with the loading channel Fuel cloth bucket, closed in the loading channel to be slidably fitted with expeller, the expeller is far from the gasified combustion apparatus One end be fixedly connected with several pusher connecting rods, the outer end of the pusher connecting rod is connected with pusher connecting plate jointly, described to push away Material connecting plate is connected with reciprocal material-pulling device；It is equipped with bed course between the loading channel and the fire grate and passes through gap.

9. garbage derivatived fuel as described in claim 1 boiler high temperature combustion system, it is characterised in that: the exhanst gas outlet It is connected with deduster, is connected between the dust discharge end of the deduster and the gasified combustion apparatus or the fuel feeding device There is flue dust back-burning device.

10. the garbage derivatived fuel boiler high temperature combustion system as described in claim 1 to 9 any claim, feature Be: the gasified combustion apparatus includes gasification, and combustion chamber, and the gasification, and combustion chamber is equipped with and the uniform cloth sand device pair The corresponding charging entrance of bed course entrance and the fuel feeding device answered and flame slag-drip opening corresponding with the burner hearth；Institute The cavity wall for stating gasification, and combustion chamber is equipped with heat insulation and heat control device, and the chamber top of the gasification, and combustion chamber is equipped with several directive fuel quantity ga(u)ges The air lance in face, the chamber top that the air lance passes through the gasification, and combustion chamber are connected with air supply device；The air lance Lower end edge fuel conveying direction gradually decrease.