CN206755184U - Domestic waste incineration water-cooled grate system and its incinerator - Google Patents
Domestic waste incineration water-cooled grate system and its incinerator Download PDFInfo
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- CN206755184U CN206755184U CN201720401166.3U CN201720401166U CN206755184U CN 206755184 U CN206755184 U CN 206755184U CN 201720401166 U CN201720401166 U CN 201720401166U CN 206755184 U CN206755184 U CN 206755184U
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Abstract
A kind of domestic waste incineration water-cooled grate system and its incinerator are the utility model is related to, belongs to technical field of waste incineration.The system includes fire grate segment, the first expansion tank, the second expansion tank, pipe heat exchanger, air heat exchanger, first circulation water pump and second circulation water pump；Fire grate segment has multiple, and is hollow structure；Multiple fire grate segments are arranged in parallel by water pipe；Heat medium pipeline, first circulation water pump in first expansion tank, pipe heat exchanger and the multiple fire grate segments being arranged in parallel connect to form loop by water pipe；The heat medium pipeline of cold medium pipeline, second circulation water pump and air heat exchanger in second expansion tank, pipe heat exchanger connects to form loop by water pipe.The system can maintain fire grate metal inside and surface temperature, reach stable operation purpose under high hot blast temperature, high burning load state, extend the fire grate life-span, reduce the deformation bite in incinerator running, strengthen mechanical stability, maintenance workload is greatly reduced.
Description
Technical field
The utility model belongs to technical field of waste incineration, and in particular to a kind of consumer waste incineration water-cooled grate system
System and its incinerator, more particularly to a kind of Stable Combustion Technology of high heating value waste incineration.
Background technology
Waste incinerator is designed generally according to domestic refuse thermal value（4.2MJ/KG-9.6MJ/KG）Scope is carried out, at present rubbish
Rubbish incineration furnace grate is the fritter fire grate of hydraulic-driven, is divided into two kinds of forwards and backstepping.Because rubbish water content is high and part is sent out
Up to regional refuse thermal value it is high the reason for.Generally existing problems with running：
1st, rubbish water content high request improves the temperature of dry-heat air, and hot blast temperature can reach 200-220 DEG C at present, make
Fire grate chilling temperature drop is obtained not get off.
2nd, combustion temperature in hearth can reach 600-700 DEG C, and temperature is very high when stoker surface contact is burnt away the refuse, and often makes
Red into fire grate burning, too high temperature causes the fire grate lost of life.
3rd, high-temperature expansion causes fire grate segment backlash compensation insufficient, causes bite to deform, and driving is difficult, causes hydraulic system event
Barrier.
4th, Miniature air-cooling fire grate due to quantity it is more, installation and maintenance difficult, overhaul need the long period.
The class problem of the above four is small-sized fire grate segment frequent produced problem at high operating temperatures.
As the calorific value in Chinese flourishing city and external rubbish further improves, air-cooled small-sized fire grate segment is more difficult to adapt to from now on
The requirement of waste incineration stable operation.
Because domestic waste incineration adapts to the needs of high heating value rubbish, the fire grate segment cooling of urgent need to resolve and wind-warm syndrome improve
Between contradiction.Therefore how to overcome the shortcomings of existing Miniature air-cooling fire grate chip technology is current high heating value garbage incineration technology neck
The problem of domain urgent need to resolve.
Utility model content
The purpose of this utility model is exactly to solve domestic waste incineration Miniature air-cooling fire grate to be not suitable with high heating value rubbish fortune
The problem of row, while solve the problems, such as that the small-sized deformation of fire grate segment various modifications bite, insufficient rigidity and fire grate overtemperature shorten the life-span,
A kind of domestic waste incineration water-cooled grate system and its incinerator are provided.Enter in current domestic flourishing municipal refuse calorific value
One step raises and the refuse thermal value of external refuse classification reaches（10MJ/KG-16MJ/KG）In the case of, make burning adapt to high heating value,
High-moisture rubbish, and ensure fire grate equipment normal operation.
To achieve the above object, the technical solution adopted in the utility model is as follows：
Domestic waste incineration water-cooled grate system, including fire grate segment, the first expansion tank, the second expansion tank,
Pipe heat exchanger, air heat exchanger, first circulation water pump and second circulation water pump；
Described fire grate segment has multiple, and is hollow structure；Multiple fire grate segments are arranged in parallel by water pipe；
Heat medium pipeline, first circulation water pump in first expansion tank, pipe heat exchanger and it is arranged in parallel multiple
Fire grate segment connects to form loop by water pipe；
Heat Jie of cold medium pipeline, second circulation water pump and air heat exchanger in second expansion tank, pipe heat exchanger
Matter pipeline connects to form loop by water pipe.
It is further preferred that fire grate segment is fixed type grate piece or slidingtype fire grate segment.
It is further preferred that first circulation water pump there are two, and it is arranged in parallel by water pipe.
It is further preferred that second circulation water pump also there are two, and it is arranged in parallel also by water pipe.
It is further preferred that described water pipe uses metal hose.
The utility model also provides a kind of domestic waste incineration, using above-mentioned domestic waste incineration new type water black furnace
Heat-extraction system, that is, it is water-cooled grate system of the present utility model to change existing fire grate segment.
It is further preferred that described domestic waste incineration includes the fire grate being located in burner hearth and on fire grate
The flue of side, described fire grate are made up of section fire grate, if every section of fire grate includes dry plate fire grate segment, section fire grate is followed successively by dryer section stove
Row, burning zone fire grate and after-flame section fire grate；
Fire grate has multiple independent air compartments；The air intake vent of each air compartment passes through the air-out of warm-air pipe and frequency conversion fan
Mouth is connected；A damper is mounted on each warm-air pipe；The air intake vent of all frequency conversion fans passes through the total air feed of hot blast
Road is connected with the air outlet of steam type airheater, is connected above burner hearth by backheat high-temperature hot-air pipe with the total wind channel of hot blast.
It is further preferred that the air intake of described steam type airheater is connected with the top of dump pit.
It is further preferred that described steam type airheater there are two, and it is arranged in series.
It is further preferred that fire grate is arranged at intervals is formed successively by fixed grate film and slip fire grate segment（I.e. according to
One piece of fixed grate film, one piece slide fire grate segment, one piece of fixed grate film, one piece slide fire grate segment this order set）, in phase
Air vent is provided between adjacent fixed grate film and slip fire grate segment.
Compared with prior art, its advantage is the utility model：
Tthe utility model system improves what waste incinerator was run to high heating value, the adaptability of high-moisture rubbish and fire grate
Stability.The rational fire grate type of cooling is ensured under high hot blast temperature, high burning load state, can maintain fire grate metal inside
And surface temperature, reach stable operation purpose, also extend the fire grate life-span, life longer at least 60%.In addition, hot blast high temperature and
Fine regulation air feed, moving and stirring plus segmentation fire grate, strengthens incineration firing effect, reduces uncombusted rate.So that
Water-cooled grate can bear the load relative to 1.5-2 times of air-cooled furnace grate, reduce fire grate size.Water-cooled grate metal low thermal expansion
And support bindiny mechanism simplifies, and reduces the deformation bite in running, strengthens mechanical stability and reliability, maintenance work
Amount is greatly reduced, and can at least reduce by 30% workload.
Brief description of the drawings
Fig. 1 is the structural representation of domestic waste incineration water-cooled grate system；
Fig. 2 is the structural representation of domestic waste incineration；
Fig. 3 is the phantom in domestic waste incineration；
Wherein, 1, fire grate segment；2nd, the first expansion tank；3rd, the second expansion tank；4th, pipe heat exchanger；5th, air heat-exchange
Device；6th, first circulation water pump；7th, second circulation water pump；8th, burner hearth；9th, flue；10th, dryer section fire grate；11st, burning zone fire grate；
12nd, after-flame section fire grate；13rd, air compartment；14th, warm-air pipe；15th, frequency conversion fan；16th, damper；17th, the total wind channel of hot blast；18th, steam
Vapour air preheater；19th, backheat high-temperature hot-air pipe；20th, dump pit；21st, fixed type grate piece；22nd, slidingtype fire grate segment；23、
Hydraulic push rod；24th, air vent；25th, valve；26th, feed bin；Wherein the direction of arrow is moved towards for flue gas.
Embodiment
The utility model is described in further detail with reference to embodiment.
It will be understood to those of skill in the art that the following example is merely to illustrate the utility model, and should not be regarded as limiting
The scope of the utility model.In the examples where no specific technique or condition is specified, according to document in the art described by skill
Art or condition are carried out according to product description.Material therefor or the unreceipted production firm person of equipment, are that can pass through purchase
Buy the conventional products of acquisition.
As shown in figure 1, domestic waste incineration water-cooled grate system, including fire grate segment 1, the first expansion tank 2,
Two expansion tanks 3, pipe heat exchanger 4, air heat exchanger 5, first circulation water pump 6 and second circulation water pump 7；Described fire grate segment
1 has multiple, is hollow structure.
Multiple fire grate segments 1 are arranged in parallel by water pipe；
First expansion tank 2, the heat medium pipeline in pipe heat exchanger 4, first circulation water pump 6 and it is arranged in parallel more
Individual fire grate segment 1 is connected to form loop by water pipe, and medium is adopted water as in general pipeline, to cool for fire grate segment 1；It is preferred that fire grate
The import and export water temperature difference of piece 1 reaches 30-40 DEG C；
10 are arranged in parallel fire grate segment 1 in Fig. 1, are divided into two groups, and every group has 5, share a set of first expansion tank 2, pipe
Heat medium pipeline and first circulation water pump 6 in formula heat exchanger 4, form full wafer combined water-cooled fire grate.
Cold medium pipeline, second circulation water pump 7 and air heat exchanger 5 in second expansion tank 3, pipe heat exchanger 4
Heat medium pipeline is connected to form loop by water pipe, and medium is adopted water as in general pipeline, by air heat-exchange, in pipeline
Water cooling.The 3bar it is preferred that first circulation water pump 6 and second circulation water pump 7 pressurize.Heat medium pipeline in pipe heat exchanger 4 with
Cold medium pipeline exchanges heat；The heat medium pipeline and air heat-exchange of air heat exchanger 5.
Fire grate segment 1 is fixed type grate piece 21 or slidingtype fire grate segment 22.Fixed type grate piece 21, slidingtype fire grate segment 22
Structure does not just repeat as shown in figure 3, both fire grate segments and its power providing system are existing structure herein.
It is using the benefit of both fire grates：When needing to promote rubbish movement, slide fire grate and driven forwards by hydraulic cylinder.
When needing to promote rubbish mixing, the stand of each fire grate can cause rubbish to stir.
First circulation water pump 6 has two, and is arranged in parallel by water pipe, and a conduct is primary, and a conduct is standby；Second
Water circulating pump 7 also has two, and is arranged in parallel also by water pipe, and a conduct is primary, and a conduct is standby.
Described water pipe uses metal hose, so conveniently adapts to the thermal environment in incinerator.
The utility model water-cooled grate system is full wafer combined water-cooled fire grate：There is the large-scale of circulating cooling aquaporin inside
Fire grate, it is different from scattered Miniature air-cooling fire grate segment.
A kind of domestic waste incineration, using above-mentioned domestic waste incineration water-cooled grate system, that is, change existing
Common fire grate or air-cooled furnace grate are water-cooled grate system of the present utility model.
As shown in Fig. 2 domestic waste incineration includes the fire grate in burner hearth 8 and the flue 9 above fire grate, institute
The fire grate stated is made up of 3 sections of fire grates, if every section of fire grate is followed successively by dryer section fire grate 10, combustion including 1,3 sections of fire grates of dry plate fire grate segment
Burn section fire grate 11 and after-flame section fire grate 12；
Fire grate has multiple independent air compartments 13；The air intake vent of each air compartment 13 passes through warm-air pipe 14 and frequency conversion fan
15 air outlet is connected；
Be not limited to be provided only with a fire grate in burner hearth 8, can be provided with it is multiple, the utility model is preferably provided with two；This reality
Do not limited with the new number to air compartment 13, the dryer section fire grate 10 in a preferably fire grate has two air compartments 13, combustion
Burn that section fire grate 11 has two air compartments 13 and after-flame section fire grate 12 has an air compartment 13, such as Fig. 2, set altogether under two fire grates
There are 10 air compartments 13.It is preferred that 1 frequency conversion fan 15 supplies an air compartment 13.But not limited to this, can also several air compartments 13 shared one
Platform frequency conversion fan 15；
Shown in Fig. 2, there are 5 air compartments 13 under a fire grate, each air compartment 13 is connected with a frequency conversion fan 15；Due to Fig. 2
It is schematic diagram, so only depicting a fire grate and its attachment structure.
A damper 16 is mounted on each warm-air pipe 14；The air intake vent of all frequency conversion fans 15 passes through hot blast
Total wind channel 17 is connected with the air outlet of steam type airheater 18, and the top of burner hearth 8 passes through backheat high-temperature hot-air pipe 19 and hot blast
Total wind channel 17 is connected.
The air intake of described steam type airheater 18 is connected with the top of dump pit 20, can so prevent dump pit
The diffusion of interior rubbish taste.
Described steam type airheater 18 has two, and is arranged in series.
As shown in figure 3, fire grate is arranged at intervals is formed successively by fixed grate film 21 and slip fire grate segment 22（I.e. according to one
21, one pieces of block fixed grate film slides 22, one pieces of fire grate segment, 21, one pieces of fixed grate film slip fire grate segment 22, and this sequentially sets
Put）, air vent 24 is provided between adjacent fixed grate film 21 and slip fire grate segment 22.
The utility model waste incinerator disperses air feed system using the frequency conversion with backheat hot blast：Frequency conversion fan is segmented to supply
Wind, the requirement for fine-tuning dryer section, burning zone and after-flame section air feed flow can be reached.High temperature backheat hot blast incorporation simultaneously is empty
Pre- device hot blast, improve hot blast temperature and strengthen dry and combustion efficiency, it is mainly characterized by its scattered air feed and high temperature and mixed
Close.
The utility model waste incinerator is in use, air is extracted by dump pit top, and is passed through using steam as thermal source
Air preheater heating after, be sent to the total wind channel of hot blast, each air compartment be sent into by frequency conversion fan.It is simultaneously raising dryer section stove
Thermal wind exhausting temperature regulating range, above burner hearth extracting high-temperature hot blast by backheat high-temperature hot-air pipe connect the total wind channel of hot blast to
Fan inlet end, realize that backheat adjusts temperature function.Air vent is arranged between fixed grate film and slip fire grate segment, there is provided heat
Wind enters the passage of the rubbish bed of material.
So the utility model waste incinerator is to adjust wind supply quantity by frequency conversion fan, by steam-heated empty pre-
Device heats cold wind, while the high-temperature hot-air for mixing backheat further improves the temperature of fans entrance, and hot blast temperature can be brought up to
More than 250 DEG C, strengthen drying garbage and combustion efficiency, improve efficiency of combustion.
The utility model is exactly to use full wafer combination water black furnace heat-extraction system, is protected in the case of rubbish high heating value, high-moisture
The safe and reliable operation of incinerator and convenient maintenance are demonstrate,proved, reduces blowing out caused by grate failure.
Fire grate in the utility model water-cooled grate system is combined by multi-disc fire grate segment, and preferably 3-4 pieces are one group,
Length can reach 2-2.5 rice, and preferably the left and right sides is arranged, i.e., each side one group, but not limited to this；The advantages of so setting
It is that the fire grate quantity needed is few, rigidity is strong.Fire grate structure is simple simultaneously, and combination is easy, and easy for installation, supporting mechanism is succinct, easily
In dismounting, maintenance time is reduced.
Water pipe operating pressure is preferably 3-5Bar in the utility model water-cooled grate system, can ensure fire grate segment Inlet water
Temperature is 60-90 DEG C, and exit water temperature degree is 90-110 DEG C.
Air-cooled heat exchanger provides cold medium for cooling pipe heat exchanger, can be run under high-temperature high-pressure state, ensures pipe
The heat of thermal medium is discharged in atmospheric environment in time in formula heat exchanger, maintains the supply water temperature of fire grate segment in normal range (NR).
The scattered frequency conversion fan air feed of the utility model can fine-tune dryer section fire grate, burning zone fire grate and after-flame section
The flow of fire grate each several part, air feed requirement is met in the case of appropriate excess air coefficient, while save the energy.
The utility model incinerator can use existing ACC（Incinerator automatic burner control system）Control, according to load
Adjust loading frequency and dryer section thickness of feed layer.Dryer section fire grate coordinates hot air flow and temperature according to thickness of feed layer is detected,
Regulation dryer section slides fire grate travel frequency and travelling grate stirs frequency, completes the drying and mixing of rubbish, is tentatively pyrolyzed shape
Into gasification product.Burning zone fire grate is according to the residue detected in thickness of feed layer, grate area ignition temperature, combustion product flue gas
The parameters such as oxygen content, adjust wind supply quantity and fire grate travel frequency and stir frequency, reach clean-burning effect, while control cigarette
The generation of pollutant in gas.After-flame section fire grate according to uncombusted rate is detected, slide fire grate travel frequency, control in after-flame by regulation
The section incineration firing time, reach completely burned off purpose.Clinker under after-flame paragraph, after water-bath, pulled out, added by mucking machine
In hot ash residue storehouse.Whole fire grate combustion system is driven by fire grate, and air feed regulation, which coordinates, to be completed, and it is simultaneously most to reach rubbish completely burned
Amount reduces the purpose of pollution products.
Incineration firing control is adjusted by the regulation of rubbish thickness of feed layer, wind supply quantity, hot blast temperature, the factor such as burning time regulation
Form, rubbish movement and mixing are controlled by adjusting each section of fire grate travel frequency, pass through hot blast temperature and Flow-rate adjustment burning effect
Fruit, control burn-off rate.
The advantages of general principle of the present utility model, principal character and the utility model has been shown and described above.One's own profession
The technical staff of industry is not it should be appreciated that the utility model is limited by above-mentioned example, described in examples detailed above and specification
Simply illustrate principle of the present utility model, on the premise of the spirit and scope of the utility model is not departed from, the utility model can also
There are various changes and modifications, these changes and improvements are both fallen within claimed the scope of the utility model.The utility model will
Protection domain is sought by appended claims and its equivalent thereof.
Claims (10)
1. domestic waste incineration water-cooled grate system, it is characterised in that including fire grate segment（1）, the first expansion tank
（2）, the second expansion tank（3）, pipe heat exchanger（4）, air heat exchanger（5）, first circulation water pump（6）With second circulation water pump
（7）；
Described fire grate segment（1）Have multiple, and be hollow structure；Multiple fire grate segments（1）It is arranged in parallel by water pipe；
First expansion tank（2）, pipe heat exchanger（4）Interior heat medium pipeline, first circulation water pump（6）And be arranged in parallel
Multiple fire grate segments（1）Connect to form loop by water pipe；
Second expansion tank（3）, pipe heat exchanger（4）Interior cold medium pipeline, second circulation water pump（7）And air heat exchanger
（5）Heat medium pipeline connect to form loop by water pipe.
2. domestic waste incineration water-cooled grate system according to claim 1, it is characterised in that fire grate segment（1）
For fixed type grate piece or slidingtype fire grate segment.
3. domestic waste incineration water-cooled grate system according to claim 1, it is characterised in that first circulation water
Pump（6）There are two, and be arranged in parallel by water pipe.
4. domestic waste incineration water-cooled grate system according to claim 1, it is characterised in that second circulation water
Pump（7）Also there are two, and be arranged in parallel also by water pipe.
5. domestic waste incineration water-cooled grate system according to claim 1, it is characterised in that described water pipe
Using metal hose.
6. a kind of domestic waste incineration, it is characterised in that using the consumer waste incineration described in claim 1-5 any one
Stove water-cooled grate system.
7. domestic waste incineration according to claim 6, it is characterised in that including positioned at burner hearth（8）Interior fire grate and
Flue above fire grate（9）, described fire grate is made up of 3 sections of fire grates, if every section of fire grate includes dry plate fire grate segment（1）, 3 sections
Fire grate is followed successively by dryer section fire grate（10）, burning zone fire grate（11）With after-flame section fire grate（12）；
Fire grate has multiple independent air compartments（13）；Each air compartment（13）Air intake vent pass through warm-air pipe（14）With frequency conversion wind
Machine（15）Air outlet be connected；Each warm-air pipe（14）On be mounted on a damper（16）；All frequency conversion fans（15）
Air intake vent pass through the total wind channel of hot blast（17）With steam type airheater（18）Air outlet be connected, burner hearth（8）Top leads to
Cross backheat high-temperature hot-air pipe（19）With the total wind channel of hot blast（17）It is connected.
8. domestic waste incineration according to claim 7, it is characterised in that described steam type airheater（18）'s
Air intake and dump pit（20）Top be connected.
9. domestic waste incineration according to claim 7, it is characterised in that described steam type airheater（18）Have
Two, and be arranged in series.
10. domestic waste incineration according to claim 7, it is characterised in that fire grate is by fixed grate film and slip
Fire grate segment is arranged at intervals composition successively, and air vent is provided between adjacent fixed grate film and slip fire grate segment（24）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720401166.3U CN206755184U (en) | 2017-04-17 | 2017-04-17 | Domestic waste incineration water-cooled grate system and its incinerator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720401166.3U CN206755184U (en) | 2017-04-17 | 2017-04-17 | Domestic waste incineration water-cooled grate system and its incinerator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206755184U true CN206755184U (en) | 2017-12-15 |
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ID=60613075
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720401166.3U Active CN206755184U (en) | 2017-04-17 | 2017-04-17 | Domestic waste incineration water-cooled grate system and its incinerator |
Country Status (1)
| Country | Link |
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| CN (1) | CN206755184U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871134A (en) * | 2017-04-17 | 2017-06-20 | 云南水务投资股份有限公司 | Domestic waste incineration water-cooled grate system and its incinerator |
-
2017
- 2017-04-17 CN CN201720401166.3U patent/CN206755184U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106871134A (en) * | 2017-04-17 | 2017-06-20 | 云南水务投资股份有限公司 | Domestic waste incineration water-cooled grate system and its incinerator |
| CN106871134B (en) * | 2017-04-17 | 2023-11-03 | 云南水务投资股份有限公司 | Novel water-cooling grate system of household garbage incinerator and incinerator thereof |
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