CN104075331B - A kind of heat-accumulating type high-temperature time delay combustion system - Google Patents
A kind of heat-accumulating type high-temperature time delay combustion system Download PDFInfo
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- UGFAIRIUMAVXCW-UHFFFAOYSA-N carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 abstract description 46
- 239000003546 flue gas Substances 0.000 abstract description 46
- 239000000126 substance Substances 0.000 abstract description 15
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- 238000000197 pyrolysis Methods 0.000 description 7
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Abstract
Burning or in thermal decomposition gasification combustion processing procedure at life refuse high temperature, owing to traditional Theory of Combustion and combustion system exist major defect, thus it is of common occurrence to cause the phenomenon that the discharge of the especially toxic organic compound of the poisonous and harmful substance in flue gas exceeds standard.A kind of heat-accumulating type high-temperature time delay combustion system that the present invention proposes, can make flue gas thoroughly burn, and decomposes flue gas completely and includes that two English are at interior various poisonous and harmful elements such as grade.The efficient stable when present invention runs, deft design, of a tightly knit structure, highly reliable.It both can be applicable in common life refuse high temperature heat treatment system, it is also possible in clinical waste and Hazardous Chemical Substances burning process, is the renewal product of traditional combustion stove.
Description
Invention field
The present invention relates to the equipment of the high-temperature hot treatment technology process such as house refuse or medical waste, it is that a kind of heat accumulating type is high
Temperature time delay combustion system.
Background technology
The high-temperature heat treatment process such as house refuse, medical waste, chemical refuse are to include directly burning, and pyrolytic gasification is gentle
Changing to melt waits high temperature to incinerate means.Wherein pyrolytic gasification and gasification melting method are all first at high temperature to carry out house refuse
Pyrolytic gasification, generates CO, CO2、HCl、SO2、NOx、H2、CH4、CmHnAnd it is the polycyclic aromatic hydrocarbon of trace, many
The toxic organic compound compositions such as chlorine aromatic hydrocarbons and two English, the most again by these flammable mixed gas or imperfect combustion flue gas
Introduce the further combustion decomposition of combustion system so that it is be finally changed into by simple inorganic matter (CO2、HCl、SO2、NOx、
H2O) flue gas formed, it discharges after heat energy utilization and gas cleaning process again, it is achieved innoxious purpose.
Traditional design theory is thought, under 850 DEG C of high temperature, the above-mentioned fuel gas time of staying can break completely not less than 2s
Ruin the toxic organics including high chemical stability such as including two English, but the really not so ideal of practical operation situation.
Owing to component of refuse is extremely complex, the factor that therefore impact high stable Organic substance including two English decomposes is the most suitable
Complicated.Actual flue gas is carried out detection show, in its flue gas of combustion furnace of the Design Theory stopping 2s by more than 850 DEG C
In the content of toxic organics of the high chemical stability such as two English be significantly larger than theoretic prediction level, this is at cigarette
During gas disposal, people would have to the system big carbon content active of addition to adsorb them, and otherwise fume emission is by severe overweight.
This just provides jerry chance to garbage disposal enterprise.Therefore, we would have to traditional design theory
(more than 850 DEG C, >=2s) query and again examine closely.Show through lot of experiments, about 850 DEG C or slightly higher
Temperature can not decompose all of high stability organic compound in flue gas about the 2s time completely.And current work
In journey, the actual combustion furnace used is sky thorax combustion furnace mostly, i.e. in addition to furnace wall, almost without assembling heat-storing material in burner hearth
Using as high-temperature stable device.So, empty thorax combustion furnace not only temperature is relatively low, and the burning gases time of staying is short, and behaviour
In work, in burner hearth, temperature is fluctuated substantially by gas composition influence up and down, these factors composition conventional heating technique and combustion furnace
Birth defect.It is therefore desirable to propose new Theory of Combustion and invent new combustion system, could thoroughly efficiently control
The toxic organic compound of the high stabilities such as two English in combustion product gases.
The present invention will propose a kind of high-temperature delayed Theory of Combustion and provide a kind of heat-accumulating type high-temperature time delay combustion system, to replace
The Theory of Combustion of traditional life refuse high temperature heat treatment process and combustion system.
Summary of the invention
The most traditional consumer waste incineration theory is 850 DEG C of area above based on combustible gas or imperfect combustion flue gas
The time of staying >=2s, so according to chemomotive force theory, toxic organics with two English as label is actual to be divided
Solution rate is up to more than 99.0%.And it is theoretical based on this, when two English content in flue gas (flue dust) are up to 1000ng
TEQ/m3(having literature research to support this data) time above, in flue gas, two English content of remaining are also up to 10ng TEQ/m3,
This limit value specified far above GB GB18485-2001, is therefore necessary for using adding the chemistry such as Calx, activated carbon
The method of medicine is acted upon.
The high-temperature delayed Theory of Combustion that the present invention proposes is then based on following settings: the poisonous and harmful with two English as label
The actual resolution ratio of Organic substance should reach more than 99.99%, and after the burning of such guarantee, discharged flue gas is after simple process
Two English can be met less than 0.1ng TEQ/m3The limit value of EU2000/76/EC standard, and be not necessary to as traditional the most mostly
Number flue gas treating process is such, adds ability after the chemical substances such as a large amount of quick lime, activated carbon are neutralized and adsorb to system
GB GB18485-2001 or Europe superscript EU2000/76/EC can be reached reluctantly.
Accordingly, high-temperature delayed combustion system can be designed by one of following three situation: (1) described fuel gas is at 850 DEG C
More than 12s is stopped with the combustion zone of up to 1000 DEG C of temperature；(2) described fuel gas at 1000 DEG C with up to 1200 DEG C
The combustion zone of temperature stops more than 10s；(3) described fuel gas stops in the combustion zone of 1200 DEG C and temperatures above
More than 8s.
The most do not carry out obligatory classification due to the house refuse of China to collect and process, and moisture is the highest (generally
50-60%wt), the maximum temperature that therefore they produce in stove when burning be not generally possible to reach 1200 DEG C or more than, greatly
Majority is 800-1050 DEG C.Therefore the present invention is by planting situation according to (1st) listed by above-mentioned theory, (2), proposes one raw
Waste heat accumulating type high-temperature delayed combustion system alive, and (3rd) kind situation also refers to this design.
Technical scheme is as follows:
A kind of heat-accumulating type high-temperature time delay combustion system, as shown in Figure 1, the structure of described combustion system is cube or length
Cube, has multiple furnace chamber in it, be provided with passage of flame, be serially connected between furnace chamber and furnace chamber, forms the curved fire of vertical folding
Road, the contour structure size of described combustion system is determined by handled gas flow, the length profile of this system
Size can be tens centimetres, several meters, tens meters or tens meters, as long as intensity can guarantee that, and described combustion system master
Parts are wanted to include furnace wall 1A, 1B, 1C；Dividing plate 2A, 2B；Heat-storing material 3；Grate 4；Cleaning door 5；Furnace bottom base
Plinth 6；Combustible gas inlet tube 7；Smoke outlet tube 8；Explosion-proof valve 9；Passage of flame 10A, 10B；Air intlet pipe 11；
Combustible gas air inlet pipe 7 and flue gas escape pipe 8 are opened in both sides or the homonymy of described system respectively, and each furnace chamber top is provided with anti-
Quick-fried valve 9 is to ensure the safety of system, and dividing plate 2A, 2B lower end or upper end are provided with passage of flame 10A, 10B, each
Furnace chamber bottom is provided with fire grate 4, below fire grate 4 with cleaning door 5 above suitably place be respectively provided with air intlet pipe 11；Described
Furnace wall 1A, 1B, 1C, wherein 1A is stove outer covering, common heat resisting steel such as Q345R make, holding for whole system
Carry structure；Intermediate layer 1B is heat-barrier material, can use silicide fiber etc.；Innermost layer 1C is refractory material, can use
The materials such as polycrystalline mullite fibre (PMF) make；Described dividing plate 2A, 2B, its median septum 2A are each stove of system
Dividing plate between chamber, is also the structure supporting walls between internal system furnace chamber and furnace chamber simultaneously, and their sum is that furnace chamber is total
Number-1；Dividing plate 2A is made by High-temperature resistant alloy material (such as Ni-based exotic material, zirconio exotic material etc.), or
Other refractory metal material makes, and it is special that this metalloid material requires have orthodox material intensity for a long time more than 1200 DEG C
Property, dividing plate 2A both sides are compounded with refractory material 2B, 2B and the materials such as polycrystalline mullite fibre (PMF) also can be used to make,
For high temperature and mordant stove fire flame being isolated with dividing plate 2A metal material, play protective action；Described every
Plate 2A, 2B lower end and upper end are provided with passage of flame 10A, 10B, and they are the passage of flames between upstream and downstream furnace chamber,
The size of this passage of flame to calculate according to the actual condition flow of flame gas when design, should make flame
Gas is smooth and easy to be passed through, and being unlikely to again opening size affects its structural strength too greatly.Usually, flame gas passage is flow through
The flame gas speed of 10A, 10B is preferably 5～10m/s；Staggered accumulation of heat material has been assembled in described furnace chamber
Material 3, heat-storing material 3 is Conventional solid acid resistance heat-storing material, such as alundum brick and electro-corundum brick, high temperature resistant
Ceramic blocks etc., can select the heat-storing material that thermal capacity is higher and service life is longer, heat-storing material 3 when conditions permit
Tiling method follow uniformly, porous and staggered rule so that thermal-flame is evenly distributed in each space and highly rapid
Stream, accompanying drawing 3,4 show a kind of possible tiling method, and wherein accompanying drawing 3 is the partial view of Fig. 1, and accompanying drawing 4 is
Partial top view, heat-storing material 3 is piled up on support grid 14, support grid 14 and furnace wall 1A and dividing plate 2A phase
Weldering, need to ensure when heat-storing material 3 is piled up that its gas flow sectional area is combustible gas inlet tube 7 sectional area more than 1.2 times,
Preferably 1.5-3 times；Described furnace chamber is provided with fire grate 4, the distance bottom fire grate 4 and above-mentioned heat-storing material 3 in bottom
At 400-1500mm, preferably 500-1000mm；Fire grate 4 is uniformly to be had several strip straight holes by one piece
High temperature resistant cast iron or other refractory metal material make, fire grate 4 can weld with furnace wall 1A and dividing plate 2A, riveting
Connecing, it is also possible to directly level assembles between 1B and 2B, and fire grate 4 is arranged above high temperature combustion zone, lower section is that low temperature amasss
Gray area.
Above-mentioned combustion system, the quantity of described furnace chamber can be even number 2,4,6,8,10 ... (such as accompanying drawing 2), also
Can be odd number, 3,5,7,9,11 ... (such as accompanying drawing 1), when furnace chamber number is even number, combustible gas inlet tube 7 and flue gas
Outlet 8 is on the identical height of system outer wall both sides；When furnace chamber number is odd number, combustible gas inlet tube 7 and flue gas go out
Mouth pipe 8 is on the differing heights up and down of system outer wall both sides.
Above-mentioned combustion system, described furnace chamber can be with straight line parallel series arrangement, it is also possible in " U " type or " S " type
Arrangement, is shown in accompanying drawing 5, shown in 6.Depending on this can be according to reserved space, built device scene.Usually, with straight line
Parallel series is arranged preferably.
Above-mentioned combustion system, front, described dust stratification district is provided with cleaning door 5, closes at ordinary times, open shoot door during deashing,
In by dust stratification district, the flue dust of deposition clears out.
Above-mentioned combustion system, the level height in described furnace wall is at 1200-1600mm, be provided with visor 12A,
12B, it is simple to directly observe the combustion position in stove, this type of visor can be installed on each furnace chamber wall if desired.
Above-mentioned combustion system, the level height in described furnace wall is 1600mm at top, is provided with temperature sensing
Device interface 13A, 13B, for measuring the ignition temperature in furnace chamber, can install this type of temperature if desired on each furnace chamber wall
Degree sensor interface.
The heat-accumulating type high-temperature time delay combustion system of the present invention is so to run:
Combustible gas or imperfect combustion flue gas that refuse pyrolysis or burning produce enter system of the present invention from combustible gas air inlet pipe 7
System, then along the 1st (numbering from left to right in accompanying drawing) furnace chamber limit motion from top to bottom limit burning, the flame of generation
Crossfire in gap between staggered heat-storing material 3, and form great turbulence level.The high temperature that burning is released adds simultaneously
Refractory material in thermal regenerator material 3 and furnace wall, makes them absorb enough heats and remain that the condition of high temperature is (theoretical
On, the maximum temperature that they can reach is consistent with peak flame temperature), present system so can be made to stablize work
Make.When flame arrives bottom first furnace chamber, due to the effect of negative pressure, flame will be along the 1st dividing plate 2A, 2B
The passage of flame of (numbering from left to right in accompanying drawing) bottom enters bottom second furnace chamber, then continue from bottom to top motion and
Burning, the motion of such form of zigzag and fired state, until entering last furnace chamber (rightmost side), complete complete
Portion's combustion process.The high-temperature flue gas produced finally will be discharged outside system by flue gas escape pipe 8, enter downstream section, enter
Row heat energy utilization.
In above-mentioned high-temperature delayed combustion process, in furnace chamber, to supplement sky by air intlet pipe 11 continually simultaneously
Gas, has reached combustion-supporting purpose.Adding air mass flow should be through strict calculating and regulation and control.
When combustible gas or imperfect combustion flue gas enter present system from combustible gas air inlet pipe 7, fill until all becoming
The flue gas of divided combustion is discharged system from flue gas escape pipe 8 again, and period there occurs a large amount of chemical reaction, including chemical substance
Oxidation reaction, be re-combined into reaction, and final pyrolysis etc..Pyrolysis will make combustible gas or the most complete
The flue gas of burning is finally changed into simple inorganic matter: CO2、HCl、SO2、NOx、H2In O, and excess air
N2、O2, etc., they are i.e. the main components of flue gas.
In flame motion and combustion process, the dust in flame gas will be fallen into below by the perforate on fire grate 4
Dust stratification district.When the dust stratification in dust stratification district accumulates certain thickness, then can open cleaning door 5 and be cleared out process in time.
It is an advantage of the current invention that: (1) correct for the high-temperature process rubbish such as tradition waste incineration/pyrolytic gasification in Theory of Combustion
The birth defect that aspect exists, it is proposed that new Theory of Combustion, has invented new high-temperature delayed combustion system, has made rubbish produce
Raw combustible gas or imperfect combustion flue gas are fully burnt, toxic organics therein especially two English
The high toxicity difficulty decomposed substances such as class, chlorobenzene class, furans are fully decomposed and are detoxified, it is ensured that all kinds of in the flue gas of discharge
The content of toxic organics is in ultra low levels, and flue gas processes a little, not only meets GB, also can meet generation simultaneously
Any most stringent of standard limit of smog release in boundary；(2) due to the fact that employing integrated-type design, whole equipment volume is little,
Efficiency is high, low cost of manufacture and convenient to operate；(3) design based on this integrated-type, many furnace chambers in an equipment
Series connection, and be spaced from each other by exotic material, therefore, compared with traditional combustion furnace, outside present device system
Wall periphery area to reduce more than 50%, therefore heat loss is the least, it is easy to maintains the high temperature in furnace chamber, is very beneficial for organic
The decomposition of poisonous substance；(4) present invention piles up in burner hearth a large amount of heat-storing material, compared with traditional empty thorax combustion furnace, it
Be several times as much as the heat energy of sky thorax combustion furnace by absorbing and storing in combustion.Therefore, the operational stability of the present invention is more
Height, can maintain stable high temperature all the time in stove.Generally when burning identical component of refuse, the ignition temperature of the present invention is wanted
The high stables such as the traditional empty thorax combustion furnace of ratio improves 100-150 DEG C, these two English being more favorable to decompose in flue gas are poisonous
Harmful organic substance.
Accompanying drawing explanation
Fig. 1 is heat-accumulating type high-temperature time delay combustion system (5 furnace chamber).Wherein 1A-furnace wall shell, 1B-furnace wall is heat insulation
Layer, 1C-furnace wall flame retardant coating, 2A-internal partition, 2B-internal partition flame retardant coating, 3-heat-storing material, 4-fire grate, 5
-cleaning door, 6-furnace bottom basis, 7-combustible gas inlet tube, 8-smoke outlet tube, 9-explosion proof door, 10AB-fire
Flame passage, 11-air intlet pipe, 12AB-visor, 13AB-temperature sensor interface.
Fig. 2 is heat-accumulating type high-temperature time delay combustion system (4 furnace chamber).
Fig. 3 is the partial view in heat-accumulating type high-temperature time delay combustion system furnace chamber.
Fig. 4 is the partial top view of heat-accumulating type high-temperature time delay combustion system Fig. 3.
Fig. 5 is heat-accumulating type high-temperature time delay combustion system (double " U " type).
Fig. 6 is heat-accumulating type high-temperature time delay combustion system (three rows " S " type).
Detailed description of the invention
Embodiment 1:100t/d domestic garbage pyrolysis gasified combustion apparatus, msw water content is averagely about 52%, pyrolysis gas
Operating mode flow is 41000m3/h.Using combustion system of the present invention, the body of heater of combustion system is rectangular structure,
Overall dimensions length × width × height 3000 × 2500 × 6000mm.Combustible gas inlet tube and smoke outlet tube a size of 1200
× 600mm and 1000 × 800mm.Set 4 furnace chambers altogether, between furnace chamber and furnace chamber, set pair of parallel passage of flame,
Size is 1200 × 300mm.The staggered high-temperature ceramics heat-storing material assembling resistance to more than 1400 DEG C, accumulation of heat in furnace chamber
The voidage that material assembles is about 45% (i.e. passage of flame).Each furnace chamber top respectively sets a pressure type explosion-proof valve, when
When stove cavity pressure is more than 1.2atmA, explosion-proof valve automatically turns on pressure release, and the high-temperature gas released will be explosion-proof by being connected to
Pipeline bottom the comprehensive tower of the flue gas self-cleaning system of valve and follow-up workshop section is directly entered smoke processing system and processes, and not
It is that directly emptying works the mischief.The furnace body outer wall 1A of present system uses heat resisting steel Q345R to make, and intermediate layer is heat insulation
Material 1B uses silicide fiber to make, and innermost layer refractory material 1C uses polycrystalline mullite fibre (PMF) to make,
It has the advantages that Ultralight is high temperature resistant, belongs to Al2O2SiO2Being the one of ceramic fibre, heatproof is up to
1500-1600℃.Furnace chamber dividing plate 2A uses Inconel625 high-temperature alloy to make, and it can be at about 1200 DEG C tools
There are good intensity and decay resistance.The making material of dividing plate flame retardant coating 2B is identical with hot material 1B, uses silicon
Compound fiber makes.
Calculating through design and measure, flame time of staying in system is about 12.8s.Mean temperature in 1st furnace chamber is
986℃；Mean temperature in 2nd furnace chamber is 1024 DEG C；Mean temperature in 3rd furnace chamber is 1017 DEG C；4th stove
The mean temperature of intracavity is 966 DEG C.
After using combustion system of the present invention burning, recording the predominantly organic thing content in exiting flue gas, to be respectively as follows: benzene class organic
Thing, does not detects, and two English type organics are 0.0963ng TEQ/m3.Particularly indicate burning the most thoroughly with
The composition CO of pointer meaning, is only 2mg/m in exiting flue gas3, and China's overwhelming majority garbage burning factory processes it at present
After flue gas in CO be 100mg/m3Above.The setting of existing GB GB18485-2001 of China is≤150
mg/m3, the setting of existing Europe superscript EU2000/76/EC (2000 standard) is≤50mg/m3。
Embodiment 2:200t/d domestic garbage pyrolysis gasified combustion apparatus, msw water content is averagely about 56%, pyrolysis gas
Operating mode flow is 83500m3/h.Using combustion system of the present invention, the body of heater of combustion system is rectangular structure,
Overall dimensions length × width × height 6000 × 2500 × 6000mm.Combustible gas inlet tube and smoke outlet tube a size of 1500
× 800mm and 1500 × 800mm.Set 9 furnace chambers altogether, arrange in " S " type.Set between furnace chamber and furnace chamber a pair flat
The passage of flame of row, size is 1200 × 300mm.The staggered high-temperature ceramics assembling resistance to more than 1400 DEG C in furnace chamber
Heat-storing material, the voidage that heat-storing material assembles is about 45% (i.e. passage of flame).Each furnace chamber top respectively sets a pressure
Power formula explosion-proof valve, when stove cavity pressure is more than 1.2atmA, explosion-proof valve automatically turns on pressure release, and the high-temperature gas released will
It is directly entered at flue gas by the pipeline being connected to bottom the comprehensive tower of the flue gas self-cleaning system of explosion-proof valve and follow-up workshop section
Reason system processes rather than directly emptying works the mischief.The furnace body outer wall 1A of combustion system of the present invention uses heat resisting steel
Q345R makes, and intermediate layer heat-barrier material 1B uses silicide fiber to make, and innermost layer refractory material 1C uses polycrystalline not
Carry out mineral wool (PMF) to make.Furnace chamber dividing plate 2A uses Inconel625 high-temperature alloy to make.Dividing plate flame retardant coating 2B
Making material identical with heat-barrier material 1B, use silicide fiber make.
Calculating through design and measure, flame time of staying in system is about 14.7s.Mean temperature in 1st furnace chamber is
956℃；Mean temperature in 2nd furnace chamber is 996 DEG C；Mean temperature in 3rd furnace chamber is 1006 DEG C；4th furnace chamber
Interior mean temperature is 1007 DEG C；Mean temperature in 5th furnace chamber is 1001 DEG C；Mean temperature in 6th furnace chamber is
989℃；Mean temperature in 7th furnace chamber is 973 DEG C；Mean temperature in 8th furnace chamber is 921 DEG C.
After combustion system of the present invention is burnt, the predominantly organic thing content recorded in exiting flue gas is respectively as follows: benzene type organic,
Not detecting, two English type organics are 0.0601ng TEQ/m3.CO in exiting flue gas is 1mg/m3。
Embodiment 3:50t/d consumer waste incineration device, msw water content is averagely about 54%, imperfect combustion cigarette
Gas operating mode flow is 20360m3/h.Using combustion system of the present invention, the body of heater of combustion system is rectangular structure,
Overall dimensions length × width × height 2000 × 1800 × 5000mm.Combustible gas inlet tube and smoke outlet tube size are
□800mm.Set 6 furnace chambers altogether, arrange in " U " type.Passage of flame a size of 800mm between furnace chamber and furnace chamber.
The staggered high-temperature ceramics heat-storing material assembling resistance to more than 1400 DEG C in furnace chamber, the voidage that heat-storing material assembles is about 53%
(i.e. passage of flame).Each furnace chamber top respectively sets a pressure type explosion-proof valve, when stove cavity pressure is more than 1.2atmA,
Explosion-proof valve automatically turns on pressure release, and the high-temperature gas released is by the flue gas automatically cleaning system by being connected to explosion-proof valve and follow-up workshop section
Pipeline bottom the comprehensive tower of system is directly entered smoke processing system process rather than direct emptying works the mischief.The present invention
The furnace body outer wall 1A of combustion system uses heat resisting steel Q345R to make, and intermediate layer heat-barrier material 1B uses silicide fiber
Making, innermost layer refractory material 1C uses polycrystalline mullite fibre (PMF) to make.Furnace chamber dividing plate 2A uses
Inconel625 high-temperature alloy makes.The making material of dividing plate flame retardant coating 2B is identical with heat-barrier material 1B, uses silication
Fibres makes.
Calculating through design and measure, flame time of staying in system is about 9.21s.Mean temperature in 1st furnace chamber is
856℃；Mean temperature in 2nd furnace chamber is 868 DEG C；Mean temperature in 3rd furnace chamber is 901 DEG C；4th furnace chamber
Interior mean temperature is 892 DEG C；Mean temperature in 5th furnace chamber is 862 DEG C；Mean temperature in 6th furnace chamber is
834℃。
After combustion system of the present invention is burnt, the predominantly organic thing content recorded in exiting flue gas is respectively as follows: benzene type organic,
Not detecting, two English type organics are 0.0989ng TEQ/m3.CO in exiting flue gas is 3mg/m3。
Embodiment 4:10t/d medical refuse burning device, msw water content averagely about 20.1%, imperfect combustion
Flue gas operating mode flow is 1800m3/h.Using combustion system of the present invention, the body of heater of combustion system is rectangular structure,
Overall dimensions length × width × height 2000 × 500 × 3000mm.Combustible gas inlet tube and smoke outlet tube size are
□120mm.Set 5 furnace chambers altogether, passage of flame a size of 100mm between furnace chamber and furnace chamber.Interlock in furnace chamber and assemble
Having the high-temperature ceramics heat-storing material of resistance to more than 1400 DEG C, the voidage that heat-storing material assembles is about 42% (i.e. passage of flame).
Each furnace chamber top respectively sets a pressure type explosion-proof valve, and when stove cavity pressure is more than 1.2atmA, explosion-proof valve automatically turns on
Pressure release, the high-temperature gas released is by bottom the comprehensive tower of the flue gas self-cleaning system by being connected to explosion-proof valve and follow-up workshop section
Pipeline be directly entered smoke processing system and process rather than directly emptying works the mischief.The body of heater of combustion system of the present invention
Outer wall 1A uses heat resisting steel Q345R to make, and intermediate layer heat-barrier material 1B uses silicide fiber to make, and innermost layer is resistance to
Fire material 1C uses polycrystalline mullite fibre (PMF) to make.Furnace chamber dividing plate 2A uses the high temperature resistant conjunction of Inconel625
Gold makes.The making material of dividing plate flame retardant coating 2B is identical with heat-barrier material 1B, uses silicide fiber to make.
Calculating through design and measure, flame time of staying in system is about 11.6s.Mean temperature in 1st furnace chamber is
1256℃；Mean temperature in 2nd furnace chamber is 1321 DEG C；Mean temperature in 3rd furnace chamber is 1283 DEG C；4th stove
The mean temperature of intracavity is 1278 DEG C；Mean temperature in 5th furnace chamber is 1246 DEG C.
After present system burns, the predominantly organic thing content recorded in exiting flue gas is respectively as follows: benzene type organic, not
Detection, two English type organics are 0.021ng TEQ/m3.CO in exiting flue gas is 1mg/m3。
Embodiment 5:20t/d chemical refuse incinerator, rubbish is mainly chemical drugs and chemical solid, as poisonous
Xylonite bottle, poisonous plastic tube etc..After incinerator tentatively burns, imperfect combustion flue gas operating mode flow is about
2000m3/h.Using combustion system of the present invention, all structural parameters are the same as in Example 4.
Calculating through design and measure, flame time of staying in system is about 10.2s.Mean temperature in 1st furnace chamber is
1302℃；Mean temperature in 2nd furnace chamber is 1296 DEG C；Mean temperature in 3rd furnace chamber is 1223 DEG C；4th stove
The mean temperature of intracavity is 1167 DEG C；Mean temperature in 5th furnace chamber is 1108 DEG C.
After present system burns, the predominantly organic thing content recorded in exiting flue gas is respectively as follows: benzene type organic, not
Detection, two English type organics are 0.071ng TEQ/m3.CO in exiting flue gas is 2mg/m3。
Claims (9)
1. a heat-accumulating type high-temperature time delay combustion system, is characterized in that: the structure of described combustion system is cube or length
Cube, has multiple furnace chamber in it, be provided with passage of flame, be serially connected between furnace chamber and furnace chamber, forms the curved fire of vertical folding
Road, described combustion system critical piece includes furnace wall；Dividing plate；Heat-storing material (3)；Fire grate (4)；Cleaning door (5)；
Furnace bottom basis (6)；Combustible gas inlet tube (7)；Smoke outlet tube (8)；Explosion-proof valve (9)；Passage of flame (10A,
10B)；Air intlet pipe (11)；Furnace wall is by furnace wall shell (1A), furnace wall thermal insulation layer (1B), furnace wall flame retardant coating
(1C) composition；Dividing plate is made up of internal partition (2A), internal partition flame retardant coating (2B)；Combustible gas inlet tube (7) and
Smoke outlet tube (8) is opened in both sides or the homonymy of described system respectively, and each furnace chamber top is provided with explosion-proof valve (9) to protect
The safety of card system, internal partition (2A), internal partition flame retardant coating (2B) lower end or upper end be provided with passage of flame (10A,
10B), being provided with fire grate (4) in each furnace chamber bottom, fire grate (4) lower section is respectively provided with air with cleaning door (5) top
Inlet tube (11)；Described furnace wall, wherein furnace wall shell (1A) is made by common heat resisting steel, holding for whole system
Carry structure；Furnace wall thermal insulation layer (1B) is heat-barrier material；Furnace wall, innermost layer flame retardant coating (1C) is refractory material, can use
Polycrystalline mullite fibre material makes；Described dividing plate, wherein internal partition (2A) is the dividing plate between each furnace chamber of system,
Also being the structure supporting walls between internal system furnace chamber and furnace chamber, their sum is furnace chamber sum-1 simultaneously；Internal partition (2A)
Being made by High-temperature resistant alloy material, or other refractory metal material makes, this metalloid material requires long-time at 1200 DEG C
More than having orthodox material strength characteristics, internal partition (2A) both sides are compounded with internal partition flame retardant coating (2B), and it is also with many
Brilliant mullite fiber material makes, for by high temperature and mordant stove fire flame and internal partition (2A) metal material every
From, play protective action；Described internal partition (2A), internal partition flame retardant coating (2B) lower end and upper end is provided with flame and leads to
Road (10A, 10B), they are the passage of flames between upstream and downstream furnace chamber, and the size of this passage of flame is when design
To calculate according to the actual condition flow of flame gas, to flow through the flame gas of flame gas passage (10A, 10B)
Speed is 5～10m/s；Having assembled staggered heat-storing material (3) in described furnace chamber, heat-storing material (3) is
Conventional solid acid resistance heat-storing material, the tiling method of heat-storing material (3) is followed uniformly, porous and staggered rule, with
Making thermal-flame be evenly distributed and high turbulence in each space, heat-storing material (3) is piled up in support grid (14)
On, support grid (14) welds mutually with furnace wall shell (1A) and internal partition (2A), needs when heat-storing material (3) is piled up
Ensure that its gas flow sectional area is combustible gas inlet tube (7) sectional area more than 1.2 times；Described furnace chamber sets in bottom
Having fire grate (4), fire grate (4) is 400-1500mm with the distance of above-mentioned heat-storing material (3) bottom；Fire grate 4 be by
One block of high temperature resistant cast iron uniformly having several strip straight holes or other refractory metal material are made, fire grate 4 and stove
Wall shell (1A) and internal partition (2A) weld or rivet or directly level assembles in furnace wall thermal insulation layer (1B) and interior
Between dividing plate flame retardant coating (2B), fire grate (4) is arranged above high temperature combustion zone, and lower section is low temperature dust stratification district.
Combustion system the most according to claim 1, is characterized in that: the contour structure size of described combustion system is by institute
Process gas flow determine, the length overall dimensions of this system can be tens centimetres, several meters, tens meters or
Tens meters, as long as intensity can guarantee that.
Combustion system the most according to claim 1, is characterized in that: the quantity of described furnace chamber is even number or odd number,
When furnace chamber number is even number, combustible gas inlet tube (7) and smoke outlet tube (8) the identical height in system outer wall both sides
On；When furnace chamber number is odd number, upper and lower in system outer wall both sides of combustible gas inlet tube (7) and smoke outlet tube (8)
On differing heights.
Combustion system the most according to claim 1, is characterized in that: described furnace chamber straight line parallel series arrangement, or
Person is in " U " type or " S " type is arranged.
Combustion system the most according to claim 1, is characterized in that: described heat-storing material (3) needs when piling up to protect
Demonstrate,prove that its gas flow sectional area is combustible gas inlet tube (7) sectional area 1.5-3 times.
Combustion system the most according to claim 1, is characterized in that: described fire grate (4) and above-mentioned heat-storing material
(3) distance of bottom is 500-1000mm.
Combustion system the most according to claim 1, is characterized in that: front, described dust stratification district is provided with cleaning door (5),
Close at ordinary times, during deashing, open shoot door, for the flue dust of deposition in dust stratification district is cleared out.
Combustion system the most according to claim 1, is characterized in that: the level height in described furnace wall is
At 1200-1600mm, it is provided with visor (12A, 12B), it is simple to directly observe the combustion position in stove, at each furnace chamber
This type of visor is installed on wall.
Combustion system the most according to claim 1, is characterized in that: the level height in described furnace wall is
1600mm, at top, is provided with temperature sensor interface (13A, 13B), for measuring the ignition temperature in furnace chamber,
On each furnace chamber wall, this type of temperature sensor interface is installed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410337551.7A CN104075331B (en) | 2014-07-15 | A kind of heat-accumulating type high-temperature time delay combustion system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410337551.7A CN104075331B (en) | 2014-07-15 | A kind of heat-accumulating type high-temperature time delay combustion system |
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| CN104075331B true CN104075331B (en) | 2016-11-30 |
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| JPH09189411A (en) * | 1996-01-09 | 1997-07-22 | Mitsubishi Heavy Ind Ltd | Heat accumulation type heat-exchange type exhaust gas combustion device |
| KR20010016488A (en) * | 2000-12-14 | 2001-03-05 | 신정식 | Drainage Gas Burn Apparatus of Heat Accumulation Type |
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