CN110260335A - A kind of energy-saving sludge fluidized incineration processing unit and method - Google Patents
A kind of energy-saving sludge fluidized incineration processing unit and method Download PDFInfo
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- CN110260335A CN110260335A CN201910594461.9A CN201910594461A CN110260335A CN 110260335 A CN110260335 A CN 110260335A CN 201910594461 A CN201910594461 A CN 201910594461A CN 110260335 A CN110260335 A CN 110260335A
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- sludge
- spray gun
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- 239000010802 sludge Substances 0.000 title claims abstract description 67
- 238000012545 processing Methods 0.000 title claims abstract description 25
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000007921 spray Substances 0.000 claims abstract description 36
- 238000005266 casting Methods 0.000 claims abstract description 29
- 230000008676 import Effects 0.000 claims abstract description 22
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 claims abstract description 21
- 239000004202 carbamide Substances 0.000 claims abstract description 21
- 239000004576 sand Substances 0.000 claims abstract description 17
- 239000000498 cooling water Substances 0.000 claims abstract description 13
- 230000008569 process Effects 0.000 claims abstract description 10
- 239000011819 refractory material Substances 0.000 claims abstract description 8
- 239000007789 gas Substances 0.000 claims description 35
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 22
- 238000005243 fluidization Methods 0.000 claims description 21
- 239000003546 flue gas Substances 0.000 claims description 17
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 16
- 239000006004 Quartz sand Substances 0.000 claims description 7
- 238000002485 combustion reaction Methods 0.000 claims description 7
- 238000009835 boiling Methods 0.000 claims description 4
- 239000000839 emulsion Substances 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 4
- 238000003672 processing method Methods 0.000 claims description 4
- 239000000779 smoke Substances 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 3
- 230000003068 static effect Effects 0.000 claims description 3
- 239000002910 solid waste Substances 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 5
- 238000013461 design Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 239000004744 fabric Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- HGUFODBRKLSHSI-UHFFFAOYSA-N 2,3,7,8-tetrachloro-dibenzo-p-dioxin Chemical compound O1C2=CC(Cl)=C(Cl)C=C2OC2=C1C=C(Cl)C(Cl)=C2 HGUFODBRKLSHSI-UHFFFAOYSA-N 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005587 bubbling Effects 0.000 description 1
- 235000019504 cigarettes Nutrition 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000010926 purge Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000001932 seasonal effect Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/54—Nitrogen compounds
- B01D53/56—Nitrogen oxides
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/79—Injecting reactants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/30—Incineration of waste; Incinerator constructions; Details, accessories or control therefor having a fluidised bed
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
- F23G5/44—Details; Accessories
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/001—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for sludges or waste products from water treatment installations
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2067—Urea
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
A kind of energy-saving sludge fluidized incineration processing unit and method, belong to solid waste process field.Casting bed is fluidized to be arranged in shell burner hearth bottom, the inboard wall of burner hearth of shell is equipped with refractory material, the burner hearth cavity of shell is fluidized casting bed and is divided into incineration area, wind region two large divisions, the burner hearth sidewall of incineration area connects dewatered sludge feed inlet, start burner, auxiliary burner, urea spray gun, cooling water spray gun, sand inlet, first wet mud import and secondary air inlet, mirror mouth is separately connected at the top of the furnace body of shell, exhanst gas outlet and the second wet mud import, dewatered sludge feed inlet, start burner, auxiliary burner, urea spray gun, cooling water spray gun, sand inlet, first wet mud import, mirror mouth, the burner hearth sidewall of shell is stretched out in one end of second wet mud import and secondary air inlet respectively.The present invention effectively controls the generation and discharge of sludge incineration secondary pollution.
Description
Technical field
The present invention relates to a kind of energy-saving sludge fluidized incineration processing unit and methods, belong to solid waste process field.
Background technique
With the quickening of China's rapid development of economy and urbanization process, the sludge quantity that China city generates is also quick
Increase.There is " sludge besieged city " phenomenon in many big cities, and have started to spread to small and medium-sized cities, bring to ecological environment hidden
Suffer from.
In specific resistance to filtration field, sludge incineration gradually become Treatment of Sludge international mainstream technology, more and more by
To the favor of countries in the world.
In China, a kind of technology that sludge incineration technology is also recommended to use as current State Ministry of Environmental Protection has been obtained relatively wide
General application.In past 20 years, the burning amount of domestic sludge is significantly increased, and will be continued growing during 2016 ~ 2020, according to
E20 environmental level investigation report, from Subdividing Processing disposal technology, the thorough Decrement Technique route based on anhydration and incineration is every
Year by have 4,000,000,000 the market share.But in general, domestic to start late to the research of sludge incineration technology and equipment, and
Shortage system, in-depth study, production domesticization sludge fluidized combustion equipment with independent intellectual property rights especially lack, and cause existing
It is at home mostly external burning facility used by sludge incineration engineering.
Simultaneously in China due to multi-source, seasonal fluctuation, sewage plant propose mark, city planting ductwork upgrading etc., shale wave
Dynamic amplitude is larger.The self-sustaining burning state for directly affecting incinerator directly affects the stabilizing energy-saving operation of incineration system.
Therefore, develop it is a set of low energy consumption, discharge less, securely and reliably, high treating effect, high degree of automation and to the country
The good energy-saving sludge fluidized incineration processing unit of the adaptability of sludge becomes the task of top priority.
Summary of the invention
In order to solve the above technical problems, the present invention provides a kind of energy-saving sludge fluidized incineration processing unit and method, it can
As the key facility of sludge fluidisation burning processing system, home-made equipment is fully achieved, by reducing manufacturing cost extra earning benefit.
A kind of energy-saving sludge fluidized incineration processing unit, including shell and fluidisation casting bed, fluidisation casting bed are arranged in shell
The inboard wall of burner hearth of burner hearth bottom, shell is equipped with refractory material, and the burner hearth cavity of shell is fluidized casting bed and is divided into incineration area, wind region
Two large divisions, burner hearth sidewall connection dewatered sludge feed inlet, the starting burner, auxiliary burner, urea spray gun, cooling of incineration area
Water spray gun, sand inlet, the first wet mud import and secondary air inlet, the furnace body top of shell is separately connected mirror mouth, flue gas goes out
Mouthful and the second wet mud import, dewatered sludge feed inlet, starting burner, auxiliary burner, urea spray gun, cooling water spray gun, into
Sand mouth, the first wet mud import, mirror mouth, the second wet mud import and secondary air inlet one end stretch out the burner hearth of shell respectively
Side wall.
The burner hearth bottom connection burner hearth wind region fluidizing gas distributor and slag-drip opening of shell, burner hearth wind region fluidizing gas
For distributor in fluidisation casting bed, the burner hearth sidewall of shell is stretched out in one end of burner hearth wind region fluidizing gas distributor.Burner hearth sidewall
Equipped with manhole and hand hole.The carrier for fluidizing casting bed is quartz sand, is uniformly laid on the over and under of fluidizing gas distributor.Shell
The tapered structure in incinerator bottom, slag-drip opening is located at taper minimum point.
A kind of energy-saving sludge fluidized incineration processing method, contains following steps；By adjusting the charge proportion control of dry and wet mud
Incinerator self-sustaining burning processed, according to different sludge characteristics and calorific value, moisture content, silt content, viscosity, select different sludge into
Mouthful.
It is further comprising the steps of:
Step 1) is when fluidisation casting bed remains static, 0.5~1.5m of the height of bed, in incinerator operation process, once
Air is passed through downward blowout from the fluidizing gas distributor of incinerator lower part wind region, so that fine sand bed is in " boiling " state, produces
The fluidized bed for having given birth to an about 1~2.5m high makes charging and sand grains mixing burn in boiling-like, is herein emulsion zone, fluidized bed
Top smoke-gas area is dilute-phase zone, and setting height guarantees at least to stop 2s at 850 DEG C of flue gas, and flue gas passes through stove top later
Outlet discharges out of the furnace into smoke processing system；
Step 2) is blown into First air into burner hearth by fluidizing gas distributor, guarantees the quartz sand fluidization of fluidisation casting bed
And sludge incineration；In addition, to guarantee the completely burned of sludge, raising is burnt by Secondary Air forward to Secondary Air is passed through in combustion chamber
The burn decrement rate of burning；
Step 3) is lighted a fire when incineration system has starting burner ignition condition；
Step 4) is when material cannot maintain self-sustaining burning, by starting auxiliary burner to maintain fire box temperature；
Step 5) starts the cooling water spray gun of furnace roof when upper furnace temperature is more than the ceiling value of setting, drops to flue gas
Temperature control flue-gas temperature；
The flue gas of step 6) sludge incineration is discharged from exhanst gas outlet, works as NOxWhen content is more than setting value, starting urea spray
Rifle, urea liquid spray into burner hearth by urea spray gun.
Present invention the step of taking and what is obtained have the beneficial effect that compared with prior art
1) in incinerator operational process, it is emulsion zone that sand grains and charging boiling-like, which are mixed and burned, and upper of furnace body cigarette
Gas region, that is, dilute-phase zone, keeps sludge incineration process more thorough, burns furnace temperature >=850 DEG C, and firing efficiency >=99.9% burns
Residue clinker ignition loss < 5%, NOx, the yield of the imperfect combustions product such as CO it is extremely low, dioxin also extremely difficult generation is effectively controlled
The generation and discharge of sludge incineration secondary pollution are made.
2) cooling water spray gun is set, when upper furnace temperature is more than setting ceiling value, starts the cooling water spray gun of furnace roof,
Spray flow is by flowmeter and valve interlocked control, to improve the security reliability of device.
3) as smoke on-line monitoring system NOxWhen content is more than setting value, start urea spray gun, urea liquid passes through urea
Spray gun sprays into burner hearth to reduce the NO in flue gasxContent, further control sludge incineration during secondary pollution generation and
Discharge, flow pass through flowmeter and valve interlocked control.
4) this incinerator bed drain purge is few.Only it is mingled with the stones of larger particles in charging, refractory material stripping in furnace
It falls under equal abnormal conditions, these large particulate matters eventually fall in furnace bottom under the action of cloth wind system, are no longer participate in the stream of sand
It is dynamic, and as the regular outlet of clinker, substantially reduce the discharge amount of the final pollutant of sludge incineration.
5) in incinerator operational process, according to different sludge characteristics (calorific value, moisture content, silt content, viscosity etc.), lead to
Overregulate dry and wet mud charge proportion control incinerator self-sustaining burning.
6) in incinerator operational process, according to different sludge characteristics (calorific value, moisture content, silt content, viscosity etc.), choosing
Select different sludge imports.
Detailed description of the invention
When considered in conjunction with the accompanying drawings, by referring to following detailed description, the present invention can be more completely and better understood with
And be easy to learn many adjoint advantages, but the drawings described herein are used to provide a further understanding of the present invention,
A part of the invention is constituted, the illustrative embodiments of the present invention and their descriptions are used to explain the present invention, does not constitute to this hair
Bright improper restriction is such as schemed wherein:
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
With reference to the accompanying drawings and examples, specific embodiments of the present invention will be described in further detail.Implement below
Example is not intended to limit the scope of the invention for illustrating the present invention.
Embodiment 1: as shown in Figure 1, a kind of energy-saving sludge fluidized incineration processing unit, including shell 1 and fluidisation casting bed
2, the setting of fluidisation casting bed 2 is equipped with refractory material 3, the burner hearth cavity of shell 1 in 1 burner hearth bottom of shell, the inboard wall of burner hearth of shell 1
Casting bed 2 is fluidized to divide for incineration area, wind region two large divisions, the burner hearth sidewall connection dewatered sludge feed inlet 4 of incineration area, starting combustion
Burner 5, auxiliary burner 6, urea spray gun 7, cooling water spray gun 8, sand inlet 9, manhole 15, hand hole 16, the first wet mud import
17 and secondary air inlet 11, mirror mouth 10, exhanst gas outlet 12 and the second wet mud import are separately connected at the top of the furnace body of shell 1
18, dewatered sludge feed inlet 4, starting burner 5, auxiliary burner 6, urea spray gun 7, cooling water spray gun 8, sand inlet 9, manhole
15, one end difference of hand hole 16, the first wet mud import 17, mirror mouth 10, the second wet mud import 18 and secondary air inlet 11
Stretch out the burner hearth sidewall of shell 1.
The burner hearth bottom setting fluidizing gas distributor 13 and slag-drip opening 14 of shell 1, the setting of fluidizing gas distributor 13 exist
In fluidisation casting bed 2, the burner hearth sidewall of one end stretching shell 1 of fluidizing gas distributor 13, the one of fluidizing gas distributor 13
End connection air intlet.
For the ease of observation burning state and overhaul of the equipments, burner hearth sidewall is equipped with manhole 15 and hand hole 16.
To enter incinerator convenient for conveying wet mud, furnace roof portion is provided with the second wet mud import 18, is set on burner hearth
It is equipped with the first wet mud import 17.
The carrier for fluidizing casting bed 2 is 10-100 mesh quartz sand, is laid in the top of fluidizing gas distributor 13.
The tapered structure in incinerator bottom of shell 1, slag-drip opening 14 are located at taper minimum point in order to deslagging.
Embodiment 2: as shown in Figure 1, a kind of energy-saving sludge fluidized incineration processing unit, comprising: shell 1 and fluidisation casting bed
2, inboard wall of burner hearth is equipped with refractory material 3, and is fluidized casting bed 2 and divides for incineration area, wind region two large divisions, the burner hearth of incineration area
Side wall be equipped with dewatered sludge feed inlet 4, starting burner 5, auxiliary burner 6, urea spray gun 7, cooling water spray gun 8, sand inlet 9,
Mirror mouth 10 and secondary air inlet 11, and exhanst gas outlet 12 is equipped at the top of furnace body.Fluidizing gas distributor 13 and slag-drip opening 14.
For the ease of observation burning state and overhaul of the equipments, inboard wall of burner hearth is equipped with manhole 15 and hand hole 16, while being arranged on furnace body the
One wet mud import 17, the second wet mud import 18.
A kind of energy-saving sludge fluidized incineration processing unit, incinerator are vertical shape tower body, and pattern is bubbling type fluidisation
Bed incinerator, structure is simple, no-movable part, convenient maintenance and replacement, and fluidisation casting bed 2 is equipped with inside burner hearth, fluidizes casting bed carrier
For the quartz sand of 10-100 mesh, it is laid in the top of fluidizing gas distributor 13.
A kind of energy-saving sludge fluidized incineration processing unit, the fluidizing gas distributor of wind region setting, First air is with one
Constant speed degree is blown out by being installed on the nozzle that fluidizing gas distributor 13 is arranged, to make to fluidize casting bed 2 in " boiling " state, is generated
One about 1m~2.5m high fluidized bed, the nozzle design being arranged on this exclusive fluidizing gas distributor 13 ensure that air
It is uniformly distributed, is more suitable for sludge character, and by means of the conical design of incinerator bottom, both ensure that the flowing and conjunction of casting bed
Furthermore the particle diameter distribution of reason is passed through Secondary Air into combustion chamber by secondary air inlet 11, to guarantee the completely burned of sludge, mentions
The clinker ignition loss that height burns.
A kind of energy-saving sludge fluidized incineration processing unit, the fluidizing gas distributor 13 of wind region setting, is arranged thereon
Nozzle guarantee cloth wind it is uniform, and make sandstone be easy from furnace bottom discharge.
A kind of energy-saving sludge fluidized incineration processing unit, incinerator setting starting burner 5 and auxiliary burner 6, with
When for incinerator starting and use when sludge calorific value is not enough to support self-sustaining burning.
A kind of energy-saving sludge fluidized incineration processing unit, the tapered design in incinerator bottom, slag-drip opening 14 are located at taper
Minimum point is in order to deslagging.
A kind of energy-saving sludge fluidized incineration processing unit, incinerator inboard wall of burner hearth is lined with refractory material 3, according in furnace
Temperature, rate of temperature change, corrosion and the degree of wear of different zones are different, select suitable refractory material and thickness.
Embodiment 3: a kind of energy-saving sludge fluidized incineration processing method, just like structure shown in FIG. 1, including following step
It is rapid:
Step 1) is when fluidisation casting bed 2 remains static, 0.5~1.5m of the height of bed, in incinerator operation process, once
Air is passed through from the fluidizing gas distributor 13 of incinerator lower part wind region, and is blown out downwards with certain speed, thus fine sand bed
In " boiling " state, the fluidized bed of an about 1~2.5m high is produced, so that charging and sand grains mixing is burnt in boiling-like, herein
For emulsion zone, fluidized bed top smoke-gas area is dilute-phase zone, and setting height guarantees at least to stop 2s at 850 DEG C of flue gas, later
Flue gas is discharged out of the furnace by stove upper outlet into smoke processing system.
Step 2) is blown into First air into burner hearth by fluidizing gas distributor 13, guarantees the quartz sand fluidised form of fluidisation casting bed
Change and sludge incineration；In addition, being passed through Secondary Air into combustion chamber into 11 by Secondary Air, to guarantee the completely burned of sludge, mention
The burn decrement rate that height burns.
Step 3) is lighted a fire when incineration system has starting burner ignition condition.
Step 4) is when material cannot maintain self-sustaining burning, by starting auxiliary burner to maintain fire box temperature.
Step 5) starts the cooling water spray gun 8 of furnace roof when upper furnace temperature is more than the ceiling value of setting, drops to flue gas
Temperature has reached the purpose of control flue-gas temperature.
The flue gas of step 6) sludge incineration is discharged from exhanst gas outlet 12, works as NOxWhen content is more than setting value, starting urea spray
Rifle 7, urea liquid spray into burner hearth by urea spray gun 7.
The above is only a preferred embodiment of the present invention, it is noted that for the ordinary skill people of the art
For member, without departing from the technical principles of the invention, several improvements and modifications, these improvements and modifications can also be made
Also it should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of energy-saving sludge fluidized incineration processing unit, it is characterised in that including shell and fluidisation casting bed, fluidisation casting bed is set
It sets in shell burner hearth bottom, the inboard wall of burner hearth of shell is equipped with refractory material, and the burner hearth cavity of shell is fluidized casting bed and is divided into burning
Area, wind region two large divisions, burner hearth sidewall connection dewatered sludge feed inlet, the starting burner, auxiliary burner, urea of incineration area
The furnace body top of spray gun, cooling water spray gun, sand inlet, the first wet mud import and secondary air inlet, shell is separately connected visor
Mouth, exhanst gas outlet and the second wet mud import, dewatered sludge feed inlet, starting burner, auxiliary burner, urea spray gun, cooling
Water spray gun, sand inlet, the first wet mud import, mirror mouth, the second wet mud import and secondary air inlet one end stretch out respectively
The burner hearth sidewall of shell.
2. a kind of energy-saving sludge fluidized incineration processing unit according to claim 1, it is characterised in that the burner hearth of shell
Bottom connects burner hearth wind region fluidizing gas distributor and slag-drip opening, and burner hearth wind region fluidizing gas distributor is in fluidisation casting bed
In, the burner hearth sidewall of shell is stretched out in one end of burner hearth wind region fluidizing gas distributor.
3. a kind of energy-saving sludge fluidized incineration processing unit according to claim 1, it is characterised in that burner hearth sidewall is set
There are manhole and hand hole.
4. a kind of energy-saving sludge fluidized incineration processing unit according to claim 1, it is characterised in that fluidize casting bed
Carrier is quartz sand, is uniformly laid on the over and under of fluidizing gas distributor.
5. a kind of energy-saving sludge fluidized incineration processing unit according to claim 1, it is characterised in that the burning of shell
The tapered structure of furnace bottom, slag-drip opening are located at taper minimum point.
6. a kind of energy-saving sludge fluidized incineration processing method, it is characterised in that contain following steps；By adjust dry and wet mud into
Material ratio control incinerator self-sustaining burning selects different according to different sludge characteristics and calorific value, moisture content, silt content, viscosity
Sludge import.
7. a kind of energy-saving sludge fluidized incineration processing method according to claim 6, it is characterised in that including following step
It is rapid:
Step 1) is when fluidisation casting bed remains static, 0.5~1.5m of the height of bed, in incinerator operation process, primary air
It is passed through downward blowout from the fluidizing gas distributor of incinerator lower part wind region, so that fine sand bed is in " boiling " state, is produced
The fluidized bed of one about 1~2.5m high makes charging and sand grains mixing burn in boiling-like, is herein emulsion zone, fluidized bed top
Smoke-gas area is dilute-phase zone, and setting height guarantees at least to stop 2s at 850 DEG C of flue gas, and flue gas passes through stove upper outlet later
It discharges out of the furnace and enters smoke processing system；
Step 2) is blown into First air into burner hearth by fluidizing gas distributor, guarantees the quartz sand fluidization and dirt of fluidisation casting bed
Mud burning；In addition, to guarantee the completely burned of sludge, improving burning forward to Secondary Air is passed through in combustion chamber by Secondary Air
Burn decrement rate；
Step 3) is lighted a fire when incineration system has starting burner ignition condition；
Step 4) is when material cannot maintain self-sustaining burning, by starting auxiliary burner to maintain fire box temperature；
Step 5) starts the cooling water spray gun of furnace roof, to flue gas cool-down control when upper furnace temperature is more than the ceiling value of setting
Flue-gas temperature processed；
The flue gas of step 6) sludge incineration is discharged from exhanst gas outlet, works as NOxWhen content is more than setting value, start urea spray gun, urea
Solution sprays into burner hearth by urea spray gun.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112588108A (en) * | 2020-11-19 | 2021-04-02 | 西安热工研究院有限公司 | Flue gas denitration system and method under full-load working condition of boiler |
| CN114893780A (en) * | 2022-06-14 | 2022-08-12 | 上海市政工程设计研究总院（集团）有限公司 | Combined feeding system for sludge incineration and sludge incineration method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5752717A (en) * | 1980-09-11 | 1982-03-29 | Kawasaki Heavy Ind Ltd | Method of incinerating sludge having high water content |
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