CN110217969A - A kind of municipal sewage sludge comprehensive processing technique - Google Patents
A kind of municipal sewage sludge comprehensive processing technique Download PDFInfo
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- CN110217969A CN110217969A CN201910555764.XA CN201910555764A CN110217969A CN 110217969 A CN110217969 A CN 110217969A CN 201910555764 A CN201910555764 A CN 201910555764A CN 110217969 A CN110217969 A CN 110217969A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/60—Combinations of devices covered by groups B01D46/00 and B01D47/00
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- 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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- 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
- B01D53/14—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 by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
- B01D53/185—Liquid distributors
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- 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
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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- 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
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- 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
- B01D53/75—Multi-step processes
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- 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
- B01D53/78—Liquid phase processes with gas-liquid contact
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/121—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering
- C02F11/122—Treatment of sludge; Devices therefor by de-watering, drying or thickening by mechanical de-watering using filter presses
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F11/00—Treatment of sludge; Devices therefor
- C02F11/12—Treatment of sludge; Devices therefor by de-watering, drying or thickening
- C02F11/13—Treatment of sludge; Devices therefor by de-watering, drying or thickening by heating
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
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- 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
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- Treatment Of Sludge (AREA)
Abstract
The present invention relates to technical field of sludge treatment more particularly to a kind of municipal sewage sludge comprehensive processing techniques.It is the following steps are included: sludge feeding filter-pressing device dehydration is obtained abjection water and dewatered sludge by (1)；(2) dewatered sludge feeding incinerator is burned, is emptied after burning the flue gas feeding flue gas purification device of generation, the waste residue for burning generation is sent into building materials sintering equipment；The flue gas purification device successively includes liquid nitrogen denitration unit, chilling depickling unit, bag dust removal unit, wet scrubbing unit and temperature raising unit；(3) abjection water is sent into steam generation facility, the steam of generation is sent into temperature raising unit, and steam is converted into condensed water after heat exchange, and condensed water is sent into wet scrubbing unit；The remaining residual dirt of steam generation facility is sent into building materials sintering equipment.The invention has the characteristics that good Treatment of Sludge effect, energy conservation and environmental protection and low in cost.
Description
Technical field
The present invention relates to technical field of sludge treatment more particularly to a kind of municipal sewage sludge comprehensive processing techniques.
Background technique
All the planned cities must all build sewage treatment facility.In many people, as long as a city sets up dirt
The water supply environmental issue of water treatment plant, this city is just resolved.And the fact is that, municipal sewage plant is in sewage treatment
During necessarily lead to sludge.And with the continuous improvement for the treatment of rate of domestic sewage, the yield of sludge is equally constantly increasing
Greatly.Current national annual sludge generates total amount up to 9,000,000 tons, does not also include that urban duct is thin clearly a large amount of with training of channel generation
The high sludge of moisture content.The standardization disposition rate of whole nation sludge of sewage treatment plant is less than 20% at present, specific resistance to filtration problem
Have become and restricts the bottleneck problem that entire sewage treatment industry develops in a healthy way.
The method of the sludge of countries in the world processing at present substantially has landfill, throwing sea, compost and burning etc., wherein landfill is easy easily
Row, but need to occupy a large amount of soils and spend amount transport expense, it can be by the harm for seeping draining, foul smell around landfill yard.It throws
Sea can cause very bad influence to marine environment.Compost is dirty using containing nutrients such as nitrogen, phosphorus, making that treated in sludge
Mud can be agricultural method.Compost can make sludge reach volume reduction, stabilized purpose, but sinking due to Heavy Metals in Sludge
Long-pending and organic contamination problem, it is necessary to caution in this way.Burning is that sludge is existed using large amount of organic is contained in sludge
Ash is burnt under high temperature, to achieve the purpose that volume reduction, stabilisation and innoxious.Incineration method is compared to the above to be had very much
Advantage: sludge can on-site incineration, Treatment of Sludge speed is fast, can maximumlly reduce the volume of sludge, there is no heavy metal from
The problem of son can recover energy for generating electricity and heat supply, and burning ash can also pave the way, brickmaking, potting grain etc..And how to burn
It while burning, not only can guarantee that environment not by the influence of waste gas from incinerator, but also can reduce the cost of sludge incineration, and improved economic effect
Benefit is the emphasis direction that we are studied.
Summary of the invention
The invention solves the above problem, a kind of high treating effect, energy conservation and environmental protection, low-cost municipal wastewater treatment plant are provided
Sludge comprehensive treatment technique.
The technical solution that the present invention solves the problems, such as is to provide a kind of municipal sewage sludge comprehensive processing technique, including with
Lower step:
(1) sludge is sent into filter-pressing device dehydration, obtains abjection water and dewatered sludge；
(2) dewatered sludge feeding incinerator is burned, empties, burns after burning the flue gas feeding flue gas purification device of generation
It burns the waste residue generated and is sent into building materials sintering equipment；The flue gas purification device successively includes liquid nitrogen denitration unit, chilling depickling list
Member, bag dust removal unit, wet scrubbing unit and temperature raising unit；
(3) abjection water is sent into steam generation facility, the steam of generation is sent into temperature raising unit, and steam is converted into after heat exchange
Condensed water, and condensed water is sent into wet scrubbing unit；The remaining residual dirt of steam generation facility is sent into building materials sintering equipment.
Preferably, the incinerator includes furnace body and is set to sidewall of the furnace body, falls with what burning chamber in furnace body was connected to
Expects pipe, and the material blanking tube and the angle of furnace body furnace wall are 40 ° -50 °；Several and the first air blower is installed in the material blanking tube
The blast cap of connection, the blast cap are installed vertically on blanking tube wall.
Preferably, the furnace body overcoat is equipped with insulation cladding, is equipped between furnace body and insulation cladding and is connected to the second air blower
Air hose is connected with conduction oil between the air hose outer wall and insulating layer and furnace body；The air outlet of the air hose is set to furnace body burning
The bottom of chamber, and the air outlet is communicated with the exhaust for being layed in bottom of furnace body, being equipped with several stomatas close to the one side for burning chamber
Pipe.
Preferably, the air intake vent of the air hose be equipped with dehumidifier, the exhaust pipe far from burn chamber one side center to
It burns chamber to protrude to form draining face, condenser pipe is equipped with below the draining face.
Preferably, first air blower includes air compartment and igniting chamber, and the igniting chamber is equipped with heating member, the air compartment
Wind material blanking tube entered by blast cap after the heating of igniting chamber heating member；The air compartment is also connected to air hose.
Preferably, it is hinged with one-way slabs in the furnace body, the free end of the one-way slabs is relative to connecting pin to furnace body top
Portion's inclination, the one-way slabs offer slag hole close to the part of connecting pin.
Preferably, the wet scrubbing unit includes tower body and the air inlet for being set to tower body lower part, is set to tower body
The gas outlet at top, the inlet for being set to tower body top, the liquid outlet for being set to tower body bottom；The tower body inner top is laid with
There is lye to spray part, the lye spray part successively includes the water being connected to the inlet by the direction of tower body top-to-bottom
Pipe, containing tube and spray head for accommodating solid base divide between the water pipe and containing tube, between containing tube and spray head
It She You not through-hole.
Preferably, bottom and inner top are successively arranged vertical clapboard so that tower body inner cavity forms S-shaped suction in the tower body
Channel is received, the air inlet is set to the import department of S-shaped absorbing path, and gas outlet and liquid outlet are all set in S-shaped absorbing path
Outlet portion.
Preferably, the tower body inner bottom surface is equipped with the atomization liquid pipe being connected to the water pipe, sets in the atomization liquid pipe
There is ultrasonic ultrasonic delay line memory, one side of the atomization liquid pipe close to tower body inner cavity is equipped with several taps.
Preferably, the temperature raising unit includes shell, inner casing and the spiral tube being installed in inner casing, the shell with
Circulation canal is formed between inner casing, the spiral tube is equipped with the import and outlet being connected to the circulation canal；The inner casing
Form the temperature raising chamber that connect with the steam generation facility steam (vapor) outlet between spiral tube, temperature raising bottom of chamber portion equipped with
The condensation water out of the inlet connection.
Beneficial effects of the present invention:
1. using incineration method handle sludge, can by sludge moisture and organic matter all remove, kill all pathogen, and energy
Sludge volume is reduced to the maximum extent.It burns in the waste residue feeding building materials sintering equipment generated and is sintered to construction timber, reach
The effect to turn waste into wealth.It burns and is discharged after being handled in the flue gas feeding flue gas purification device generated, it is environmentally protective.Meanwhile flue gas
When purification, the abjection water of sludge is made full use of, after the heat source of temperature raising unit, the exchanged water conduct with certain temperature
The alkali soluble agent of wet scrubbing unit while effectively improving solid alkali solubility, also reduces in wet scrubbing unit as raising
Trap and the needs heated, it is more energy saving.
2. on the one hand utilizing material blanking tube and blast cap simultaneously, using special incinerator, making sludge quilt after preheating and drying
It is equably thrown into incinerator, and the distance cast is farthest, to obtain more fully fluidized bed combustion.On the other hand heat preservation is utilized
Shell and air hose, sludge is further dried, to improve firing efficiency, and reduce burning to obtain hot wind using waste gas of incineration
The production of carbon monoxide in the process, and energy conservation and environmental protection.
Detailed description of the invention
Fig. 1 is a kind of flow diagram of municipal sewage sludge comprehensive processing technique；
Fig. 2 is a kind of structural schematic diagram of incinerator used in municipal sewage sludge comprehensive processing technique；
Fig. 3 is a kind of structural schematic diagram of wet scrubbing unit used in municipal sewage sludge comprehensive processing technique；
Fig. 4 is a kind of structural schematic diagram of temperature raising unit used in municipal sewage sludge comprehensive processing technique；
In figure: filter-pressing device 1；Incinerator 2, furnace body 21, one-way slabs 211, material blanking tube 22, blast cap 221, the first air blower 23,
Air compartment 231, igniting chamber 232, insulation cladding 24, the second air blower 25, air hose 26, exhaust pipe 27, dehumidifier 28, condenser pipe 29；It builds
Material sintering equipment 3；Liquid nitrogen denitration unit 4；Chilling depickling unit 5；Bag dust removal unit 6；Wet scrubbing unit 7, tower body 71, into
Port 711, gas outlet 712, inlet 713, liquid outlet 714, lye spray part 72, water pipe 721, containing tube 722, spray head
723, it is atomized liquid pipe 724, vertical clapboard 73, import department 731, outlet portion 732；Temperature raising unit 8, shell 81, inner casing 82, spiral gas
Pipe 83；Steam generation facility 9.
Specific embodiment
It is a specific embodiment of the invention below, and in conjunction with attached drawing, technical solution of the present invention work is further retouched
It states, however, the present invention is not limited to these examples.
A kind of municipal sewage sludge comprehensive processing technique, as shown in Figure 1, comprising the following steps:
(1) sludge feeding filter-pressing device 1 is dehydrated, obtains abjection water and dewatered sludge；
(2) dewatered sludge feeding incinerator 2 is burned, is emptied after burning the flue gas feeding flue gas purification device of generation,
It burns the waste residue generated and is sent into building materials sintering equipment 3；Flue gas purification device successively includes liquid nitrogen denitration unit 4, chilling depickling list
Member 5, bag dust removal unit 6, wet scrubbing unit 7 and temperature raising unit 8；
(3) abjection water is sent into steam generation facility 9, the steam of generation is sent into temperature raising unit 8, and steam converts after heat exchange
For condensed water, and condensed water is sent into wet scrubbing unit 7；The remaining residual dirt of steam generation facility is sent into building materials sintering equipment 3.
In use, separating mud, water first with filter-pressing device 1, dewatered sludge, which enters in incinerator 2, to be burnt
It burns, all to remove organic matter by high temperature, kills all pathogen, and sludge volume can be reduced to the maximum extent.It burns
After, residue is sinterable to be recycled for building materials, and is burned the flue gas generated and initially entered liquid nitrogen denitration unit 4, is with liquid nitrogen
Denitrification reducing agent reduction of nitrogen oxide；Then high-temperature flue gas enters chilling depickling unit 5 and contacts with chilling lye turbulent flow, a side
On the other hand face declines flue-gas temperature suddenly with lye depickling, avoid the secondary synthesis temperature of harmful substances from flue gases dioxin
Section is spent, dioxin is inhibited to generate again；Then flue gas enters bag dust removal unit 6, flue dust class with thinner dust particle
Fly ash granule is got off by filter bag cut-off filter, and flue gas is purified again；Then flue gas enters wet process depickling unit 7 with by fine particle
Object, sour gas, heavy metal classes, dioxin absorb；Flue gas finally also needs to lift temperature to dew point or more by temperature raising unit 8 to be arranged again
It puts, to avoid the formation of vision white cigarette.Simultaneously as a large amount of abjection water are isolated when sludge dewatering, it will be needed for abjection Water warfare
Treatment process is complex and higher cost, therefore in the application, will deviate from heat source and wet type of the water for temperature raising unit 8
The solvent of depickling unit, to reach energy-efficient purpose.
Main processing units in this technique are to burn unit, due to that sludge can not be made to be completely dried by filters pressing,
In dewatered sludge still contain certain moisture, in order to reduce because moisture exist, caused by sludge incineration generate a large amount of carbon monoxide
Problem, while in order to improve the firing efficiency of incinerator 2, as shown in Fig. 2, incinerator 2 includes furnace body 21 and is set to
21 side wall of furnace body, with burn the material blanking tube 22 that be connected to of chamber in furnace body 21, and material blanking tube 22 and the angle of 21 furnace wall of furnace body be 40 °-
50 °, in the present embodiment, angle uses 45 °；Several blast caps 221 being connected to the first air blower 23, wind are installed in material blanking tube 22
Cap 221 is installed vertically on 22 tube wall of material blanking tube.It wherein, is preferably hot wind from the wind that the first air blower 23 bloats.
The air outlet of blast cap 221 is towards the burning chamber in furnace body 21, therefore under the action of the first air blower 23, from blast cap
The hot wind come out in 221 makes dewatered sludge be further dried and enter in furnace body 21 with the horizontal angle for facing upward 45 °, and
According to parabolical principle, 45° angle enable dewatered sludge burn it is intracavitary thrown it is farthest, thus be uniformly distributed in burn
It is intracavitary to obtain sufficient fluidized bed combustion.
In order to make full use of waste gas of incineration, it is arranged with insulation cladding 24 outside furnace body 21, is equipped between furnace body 21 and insulation cladding 24
The air hose 26 being connected to the second air blower 25.Conduction oil is connected between 26 outer wall of air hose and insulating layer 24 and furnace body 21.Air hose 26
Air outlet be set to the bottom that furnace body 21 burns chamber, and air outlet is communicated with and is layed in furnace body 21 bottom, close to burning chamber
It is equipped with the exhaust pipe 27 of several stomatas on one side.Waste gas of incineration transmits air supply duct 26 under the action of conduction oil and adds the wind in it
Heat is hot wind, and hot wind reenters in furnace body 21 under the action of exhaust pipe 27 by 21 bottom of furnace body, with to dewatered sludge into one
Drying is walked, to improve firing efficiency and reduce the generation of carbon monoxide in burning process.
Specifically, in the present embodiment, set snakelike for air hose 26, and according to the burning situation in furnace body 21, it will
Snakelike layout density is set as successively decreasing step by step from furnace bottom to furnace roof, i.e., snakelike air hose 26 is located at material blanking tube 22 and exports portion below
Position layout density highest, be located at the comparable position layout density of 22 outlet height of material blanking tube it is moderate, be located at material blanking tube 22 export with
On position layout density it is minimum so that the bottom periphery in furnace body of the wind in air hose 26 stops more long with sufficiently heated.
In order to further increase efficiency of combustion, this equipment can carry out secondary dehumidifying to the wind that the second air blower 25 bloats,
The dry sludge of dry wind cooperation, can improve firing efficiency to the maximum extent.Dehumidifying for the first time is the air intake vent in air hose 26
The effect of dehumidifier 28 of place's installation is lower to be realized, second of dehumidifying is center due to exhaust pipe 27 far from the one side for burning chamber to burning
It burns chamber to protrude to form draining face, draining is equipped with condenser pipe 29 below face.In the present embodiment, also in draining face and 21 side of furnace body
Junction offers the valvular drainage hole of configuration；It when wind enters in exhaust pipe 27 while also can touch it and descend the cold of laying
Solidifying pipe 29 in the present embodiment, is passed through condensed water to play the role of condensation, under condenser pipe 29, in wind in condenser pipe 29
Water vapor condensation be droplet and slide along the draining face of arc that opening valve can be such that droplet is discharged from drainage hole, and do
Dry wind can be upwardly into 21 furnace of furnace body by exhaust pipe 27, thus further promoted by the second air blower 25 suck will
Into the hot-air degree of drying of burner hearth, to improve firing efficiency to a greater degree.
In addition, the hot wind in order to further utilize air hose 26, the first air blower 23 includes air compartment 231, in air compartment 231 and wind
The connectivity part of pipe 26 is equipped with the slide plate for offering through-hole, so that the hot wind in air hose 26 enters air compartment 231, to material blanking tube
Drying sludge in 22.Meanwhile by sliding skateboard, through-hole is matched with the opening of air hose 25 on slide plate, thus it is possible to vary enters wind
The air quantity of room 231.
In addition, the first air blower 23 further includes igniting chamber 232, igniting chamber 232 is equipped with heating member, and the wind of air compartment 231 is through point
Material blanking tube is entered by blast cap 221 after fiery 232 heating member of room heating.This is because when incinerator 2 starts to burn, material blanking tube 22
In the sludge heated-air drying that needs to heat by heating member, when start to burn in furnace body 21 generate heat when, air hose 26
Interior that hot wind just can be obtained, at this time since the connection of air hose 26 and air compartment 231 acts on, hot wind can just enter after air compartment 231 to blanking
Sludge heating in pipe 22, can close heating member at this time.
Further, it is hinged with one-way slabs 211 in furnace body 21, the free end of one-way slabs 211 is relative to connecting pin to furnace body
21 top droops, one-way slabs 211 offer slag hole close to the part of connecting pin.One-way slabs is fallen on when sludge is thrown into furnace body 21
Burned on 211, just started the gravity due to sludge, under hinged effect, 211 free end of one-way slabs move down, but by
In inclined one-way slabs 211, in Refuse Incineration Process, the burnning ash of generation is burned under the guiding role of one-way slabs 211 to leaning on
The direction of nearly 21 furnace wall of furnace body is mobile and the border of burner hearth is dropped into from slag hole, thus prevent burnning ash from accumulating and blocking, so that
Suitable combustion space is remained in the middle part of burner hearth.Simultaneously as the gravity in one-way slabs 211 is reduced, in unidirectional door sheet
Under the rebound effect of body, the free end of one-way slabs 211 is moved up, so that sludge generates vibration under effect of inertia, so that burning
It burns more uniformly abundant.
By the incinerator 2 of the application, abundant burning disposal can be carried out to dewatered sludge and possibly reduced greatly to the greatest extent
The generation of carbon monoxide in burning process, but still containing other a large amount of pollutants in incineration flue gas, while in order to reach this
The purpose that abjection water is made full use of in technique, devises corresponding wet scrubbing unit 7 and temperature raising list in flue gas purification device
Member 8.
As shown in figure 3, wet scrubbing unit 7 includes tower body 71 and the air inlet 711 for being set to 71 lower part of tower body, setting
In the gas outlet 712 at the top of tower body 71, the inlet 713 for being set to tower body top, the liquid outlet 714 that is set to tower body bottom；
71 inner top of tower body be equipped with lye spray part 72, lye spray part 72 by the direction of 71 top-to-bottom of tower body successively include with
Water pipe 721, the containing tube 722 and spray head 723 for accommodating solid base of the connection of inlet 713, water pipe 721 and containing tube
Through-hole is respectively equipped between 722, between containing tube 722 and spray head 723.In use, flue gas is entered by the air inlet 711 of lower part
In tower body 71, it is absorbed with lye counter current contacting.
Meanwhile bottom and inner top are successively arranged vertical clapboard 73 so that 71 inner cavity of tower body forms S-shaped suction in tower body 71
Channel is received, air inlet 711 is set to the import department 731 of S-shaped absorbing path, and gas outlet 712 and liquid outlet 714 are all set in S-shaped
The outlet portion 732 of absorbing path.To extend flow path of the flue gas in tower body 71, that is, when improving contact of the flue gas with lye
Between, to improve assimilation effect.
In addition, 71 inner bottom surface of tower body is equipped with the atomization liquid pipe 724 being connected to water pipe 721, it is equipped in atomization liquid pipe 724 super
Sonic nebulizers, one side of the atomization liquid pipe 724 close to 71 inner cavity of tower body are equipped with several taps.
As shown in figure 4, temperature raising unit 8 includes shell 81, inner casing 82 and the spiral tube 83 being installed in inner casing 82, outside
Circulation canal is formed between shell 81 and inner casing 82, spiral tube 83 is equipped with the import and outlet being connected to circulation canal；Inner casing 82
The temperature raising chamber connecting with 9 steam (vapor) outlet of steam generation facility is formed between spiral tube 83, temperature raising bottom of chamber portion is equipped with and feed liquor
The condensation water outs of 713 connection of mouth.
In use, air inlet pipe that purified flue gas is opened up from 81 lower part of shell, being connected to spiral tube 83 enters spiral shell
It revolves in tracheae 83, the circulating-heating of temperature raising chamber is obtained under the action of circulation canal, then open up at the top of shell 81 and spiral shell
Revolve the escape pipe emptying that tracheae 83 is connected to.
Specific embodiment described herein is only an example for the spirit of the invention.The neck of technology belonging to the present invention
The technical staff in domain can make various modifications or additions to the described embodiments or replace by a similar method
In generation, however, it does not deviate from the spirit of the invention or beyond the scope of the appended claims.
Claims (10)
1. a kind of municipal sewage sludge comprehensive processing technique, it is characterised in that: the following steps are included:
Sludge is sent into filter-pressing device (1) dehydration, obtains abjection water and dewatered sludge；
Dewatered sludge feeding incinerator (2) is burned, empties, burns after burning the flue gas feeding flue gas purification device of generation
It burns the waste residue generated and is sent into building materials sintering equipment (3)；The flue gas purification device successively includes liquid nitrogen denitration unit (4), chilling
Depickling unit (5), bag dust removal unit (6), wet scrubbing unit (7) and temperature raising unit (8)；
Abjection water is sent into steam generation facility (9), the steam of generation is sent into temperature raising unit (8), and steam turns after heat exchange
Condensed water is turned to, and condensed water is sent into wet scrubbing unit (7)；The remaining residual dirt of steam generation facility is sent into building materials sintering dress
Set (3).
2. a kind of municipal sewage sludge comprehensive processing technique according to claim 1, it is characterised in that: the burning dress
The material blanking tube (22) that (2) include furnace body (21) and are set to furnace body (21) side wall, are connected to the interior burning chamber of furnace body (21) is set, and
The angle of the material blanking tube (22) and furnace body (21) furnace wall is 40 ° -50 °；It is equipped in the material blanking tube (22) several with first
The blast cap (221) of air blower (23) connection, the blast cap (221) are installed vertically on material blanking tube (22) tube wall.
3. a kind of municipal sewage sludge comprehensive processing technique according to claim 2, it is characterised in that: the furnace body
(21) it is arranged with insulation cladding (24) outside, the air hose being connected to the second air blower (25) is equipped between furnace body (21) and insulation cladding (24)
(26), conduction oil is connected between air hose (26) outer wall and insulating layer (24) and furnace body (21)；The outlet air of the air hose (26)
Mouth is set to the bottom that furnace body (21) burn chamber, and the air outlet is communicated with and is layed in furnace body (21) bottom, close to burning chamber
One side be equipped with several stomatas exhaust pipe (27).
4. a kind of municipal sewage sludge comprehensive processing technique according to claim 3, it is characterised in that: the air hose
(26) air intake vent is equipped with dehumidifier (28), and shape is protruded to chamber is burned in center of the exhaust pipe (27) far from the one side for burning chamber
The water surface in a row, the draining face lower section are equipped with condenser pipe (29).
5. a kind of municipal sewage sludge comprehensive processing technique according to claim 3, it is characterised in that: first drum
Blower (23) includes air compartment (231) and igniting chamber (232), and the igniting chamber (232) is equipped with heating member, the air compartment (231)
Wind through igniting chamber (232) heating member heating after by blast cap (221) enter material blanking tube；The air compartment (231) also with air hose (26)
Connection.
6. a kind of municipal sewage sludge comprehensive processing technique according to claim 2, it is characterised in that: the furnace body
(21) it is hinged with one-way slabs (211) in, the free end of the one-way slabs (211) is inclined relative to connecting pin to furnace body (21) top
Tiltedly, the one-way slabs (211) offers slag hole close to the part of connecting pin.
7. a kind of municipal sewage sludge comprehensive processing technique according to claim 1, it is characterised in that: the wet type is washed
Unit (7) is washed to include tower body (71) and the air inlet (711) for being set to tower body (71) lower part, be set at the top of tower body (71)
Gas outlet (712), the inlet (713) for being set to tower body top, the liquid outlet (714) for being set to tower body bottom；The tower body
(71) inner top is equipped with lye spray part (72), lye spray part (72) by tower body (71) top-to-bottom direction according to
Secondary includes the water pipe (721) being connected to the inlet (713), containing tube (722) and spray head for accommodating solid base
(723), it is respectively equipped between the water pipe (721) and containing tube (722), between containing tube (722) and spray head (723) logical
Hole.
8. a kind of municipal sewage sludge comprehensive processing technique according to claim 7, it is characterised in that: the tower body
(71) interior bottom and inner top are successively arranged vertical clapboard (73) so that tower body (71) inner cavity formation S-shaped absorbing path, described
Air inlet (711) is set to the import department (731) of S-shaped absorbing path, and gas outlet (712) and liquid outlet (714) are all set in S-shaped
The outlet portion (732) of absorbing path.
9. a kind of municipal sewage sludge comprehensive processing technique according to claim 7, it is characterised in that: the tower body
(71) inner bottom surface is equipped with the atomization liquid pipe (724) being connected to the water pipe (721), is equipped in the atomization liquid pipe (724) super
Sonic nebulizers, one side of atomization liquid pipe (724) close to tower body (71) inner cavity are equipped with several taps.
10. a kind of municipal sewage sludge comprehensive processing technique according to claim 7, it is characterised in that: the temperature raising
Unit (8) includes shell (81), inner casing (82) and the spiral tube (83) being installed in inner casing (82), the shell (81) with
Circulation canal is formed between inner casing (82), the spiral tube (83) is equipped with the import and outlet being connected to the circulation canal；
The temperature raising chamber connecting with the steam generation facility (9) steam (vapor) outlet is formed between the inner casing (82) and spiral tube (83),
Temperature raising bottom of chamber portion is equipped with the condensation water out connecting with the inlet (713).
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