CN111678135A - One-pit three-furnace type urban domestic garbage incinerator air-smoke system - Google Patents

One-pit three-furnace type urban domestic garbage incinerator air-smoke system Download PDF

Info

Publication number
CN111678135A
CN111678135A CN202010569718.8A CN202010569718A CN111678135A CN 111678135 A CN111678135 A CN 111678135A CN 202010569718 A CN202010569718 A CN 202010569718A CN 111678135 A CN111678135 A CN 111678135A
Authority
CN
China
Prior art keywords
fan
air
iii
incineration boiler
boiler
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010569718.8A
Other languages
Chinese (zh)
Inventor
景玉博
张高辉
姚喜恩
刘展
李伟砚
杨留锋
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zhengzhou Dongxing Environmental Protection Energy Co ltd
Original Assignee
Zhengzhou Dongxing Environmental Protection Energy Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Zhengzhou Dongxing Environmental Protection Energy Co ltd filed Critical Zhengzhou Dongxing Environmental Protection Energy Co ltd
Priority to CN202010569718.8A priority Critical patent/CN111678135A/en
Publication of CN111678135A publication Critical patent/CN111678135A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • F23G5/006—General arrangement of incineration plant, e.g. flow sheets
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F22—STEAM GENERATION
    • F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
    • F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
    • F22D1/16—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways
    • F22D1/20—Feed-water heaters, i.e. economisers or like preheaters with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways and directly connected to boilers
    • 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
    • F23G5/00—Incineration of waste; Incinerator constructions; Details, accessories or control therefor
    • F23G5/50—Control or safety arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
    • F23J15/022—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material for removing solid particulate material from the gasflow
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES 
    • F23J15/00—Arrangements of devices for treating smoke or fumes
    • F23J15/08—Arrangements of devices for treating smoke or fumes of heaters
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L1/00—Passages or apertures for delivering primary air for combustion 
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
    • F23L—SUPPLYING AIR OR NON-COMBUSTIBLE LIQUIDS OR GASES TO COMBUSTION APPARATUS IN GENERAL ; VALVES OR DAMPERS SPECIALLY ADAPTED FOR CONTROLLING AIR SUPPLY OR DRAUGHT IN COMBUSTION APPARATUS; INDUCING DRAUGHT IN COMBUSTION APPARATUS; TOPS FOR CHIMNEYS OR VENTILATING SHAFTS; TERMINALS FOR FLUES
    • F23L5/00—Blast-producing apparatus before the fire
    • F23L5/02—Arrangements of fans or blowers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E20/00—Combustion technologies with mitigation potential
    • Y02E20/34—Indirect CO2mitigation, i.e. by acting on non CO2directly related matters of the process, e.g. pre-heating or heat recovery

Abstract

The invention discloses a one-pit three-furnace type town domestic garbage incinerator air-smoke system, which relates to a garbage incineration treatment system and comprises a garbage storage pit, wherein the garbage storage pit is connected with a deodorization device I, a deodorization device II, a primary air fan I, a primary air preheater I, an incineration boiler I, a primary air fan II, a primary air preheater II, an incineration boiler II, a primary air fan III, a primary air preheater III and an incineration boiler III through pipelines; incineration boiler I, incineration boiler II, incineration boiler III bottom are provided with mechanical grate, and incineration boiler I, incineration boiler II, incineration boiler III top are exhaust-heat boiler, and exhaust-heat boiler's end is provided with the economizer, and the exit linkage tail gas processing apparatus of economizer possesses the advantage that improves primary air system operational reliability height, improvement economic benefits.

Description

One-pit three-furnace type urban domestic garbage incinerator air-smoke system
Technical Field
The invention relates to a waste incineration treatment system, in particular to a one-pit three-furnace type town domestic waste incinerator air-smoke system.
Background
The general process flow of the flue gas system of the urban domestic garbage incinerator is as follows: the primary fan pumps out odor from the garbage pit, the odor is heated by the primary air preheater and then enters each air chamber below the fire grate, and then enters the incinerator through air holes in the fire grate segment, and the primary air dries and supports combustion for garbage on the fire grate; flue gas generated after the garbage is combusted enters a flue of a waste heat boiler and is subjected to denitration by an SNCR device; then flows through other flues of the waste heat boiler and finally enters the deacidification tower from a coal-saving outlet of the waste heat boiler; the flue gas passes through a deacidification tower to remove acid gas in the flue gas, and the flue gas passes through an activated carbon spraying device arranged between an economizer outlet and the deacidification tower to adsorb dioxin and heavy metals in the flue gas; then the flue gas enters a dust remover to filter particulate matters in the flue gas; then, the clean flue gas from the dust remover is heated by SGH steam and enters an SCR denitration device, and the discharged clean flue gas reaching the standard is discharged out of the atmosphere from a chimney through a draught fan; however, in the existing household garbage incinerator flue gas system, when the boiler is started in a cold state, the boiler is influenced by the heat-resistant upper limit temperature of the grate segment material, a primary fan is generally selected to start before the flue temperature is 350 ℃ to cool the grate segment, otherwise, the grate segment expands unevenly, the grate segment tilts, the service life of a grate is influenced, and the boiler is forced to be stopped and replaced seriously; according to the research of the Bailiangcheng and other scholars, the smoke stays for 0.5 second when the temperature of the smoke in the hearth reaches 700 ℃, and the complete decomposition of dioxin and odor can be realized. The requirement of smoke emission is met; when the boiler is started in a cold state, starting a primary fan before the smoke temperature reaches 350 ℃, pumping odor from a garbage pit into a hearth, wherein according to a furnace starting temperature rising table, the time of each time reaches 5-6 hours in the process that the temperature of the hearth rises from 350 ℃ to 700 ℃, and the odor entering the boiler in the time period is not completely decomposed; the flue gas is only filtered by a dust remover and adsorbed by active carbon, and then is discharged from a chimney through a draught fan, so that the hidden danger of environmental pollution exists.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the one-pit three-furnace type town domestic garbage incinerator air smoke system which has the advantages of improving the operation reliability of a primary air system, reducing the fault blowing-out time and improving the economic benefit.
In order to achieve the purpose, the invention adopts the following technical scheme: the one-pit three-furnace type town domestic garbage incinerator air-smoke system comprises a garbage storage pit, wherein the garbage storage pit is sequentially connected with a primary fan I, a primary air preheater I and an incineration boiler I through a pipeline I; the garbage storage pit is sequentially connected with a primary fan II, a primary air preheater II and an incineration boiler II through a pipeline II; the garbage storage pit is sequentially connected with a primary fan III, a primary air preheater III and an incineration boiler III through a pipeline III; the garbage storage pit is also connected with a deodorization device I and a deodorization device II; the incineration boiler I, the incineration boiler II and the incineration boiler III are connected with a tail gas treatment device, an induced draft fan and a chimney; a fresh air fan device is further connected among the pipeline I, the pipeline II and the pipeline III, the fresh air fan device comprises a fresh air fan, the air inlet end of the fresh air fan is communicated with the outside air through a fresh air inlet pipeline, a filter screen and a silencer are sequentially arranged on the fresh air inlet pipeline along the air flow direction, the air outlet end of the fresh air fan is respectively connected with a primary air pre-heater I, a primary air pre-heater II and a primary air pre-heater III through a fresh air outlet pipeline I, a fresh air outlet pipeline II and a fresh air outlet pipeline III, and air outlet isolation baffles are movably arranged on the fresh air outlet pipeline I, the fresh air outlet pipeline II and the fresh air outlet pipeline III; incineration boiler I, incineration boiler II, incineration boiler III bottom are provided with mechanical grate, dragveyer, incineration boiler I, incineration boiler II, incineration boiler III top are export exhaust-heat boiler, be provided with combined flue in the export exhaust-heat boiler, export exhaust-heat boiler's end is provided with the economizer, the exit linkage tail gas processing apparatus of economizer.
In order to further optimize the present invention, the following technical solutions may be preferably selected:
preferably, the tail gas treatment device comprises an acid removal tower, a dust remover, an SGH steam heater and an SCR flue gas denitration reaction tower which are connected in sequence.
Preferably, the pipelines at the air inlet end and the air outlet end of the fresh air fan are respectively provided with a rubber expansion joint I.
Preferably, the air inlet end and the air outlet end of the fresh air fan are both provided with electric adjusting baffles.
Preferably, the combined flue comprises a vertical flue I, a vertical flue II, a vertical flue III and a horizontal flue which are connected in sequence, and the vertical flue I, the vertical flue II and the vertical flue III form an S-shaped flue.
Preferably, incineration boiler I, incineration boiler II, incineration boiler III still are connected with the overfire air fan device, the overfire air fan device includes the overfire air fan, it is provided with rubber expansion joint II respectively to equally divide on the air inlet end of overfire air fan, the air-out end of overfire air fan passes through the air preheater of once-through air and connects and burn burning furnace.
Preferably, the incineration boiler I, the incineration boiler II and the incineration boiler III are also provided with a starting fan I, a starting fan II, an auxiliary burning fan and a cooling fan in parallel, and the air inlet ends of the starting fan I, the starting fan II, the auxiliary burning fan and the cooling fan are respectively provided with a rubber expansion joint III.
Preferably, deodorizing device I, deodorizing device II all include deodorizing device entry filter screen, deodorizing device entry electrically operated gate, active carbon adsorption device and the explosion-proof type deodorization fan that connects gradually.
The invention has the beneficial effects that: the wind-smoke system of the garbage incinerator has a pit-to-three furnace mode, and is suitable for the condition that 1 garbage pit corresponds to 3 garbage incinerators; the air-smoke system is provided with a fresh air fan device which provides fresh air for boiler combustion when the boiler is started in a cold state and is shut down; can be used as a standby fan of any one incinerator primary fan; the inlet of the fresh air fan is provided with a filter screen for filtering impurities in air, and the pipelines at the air inlet end and the air outlet end of the fresh air fan are respectively provided with a rubber expansion joint for compensating and absorbing the axial, transverse and angular thermal deformation of the pipeline; the vibration of the equipment is absorbed, and the influence of the vibration of the equipment on the pipeline is reduced; absorb earthquake, the deformation of caved in to the pipeline, all the activity is provided with air outlet isolation barrier on new trend air-out pipeline I, the new trend air-out pipeline II for keep apart new trend pipeline and wind pipeline, guarantee to keep apart the foul smell in the wind pipeline after the new trend fan stops the transport, prevent that the foul smell refluence from getting into new trend fan, and then polluted atmosphere environment.
Drawings
FIG. 1 is a schematic structural diagram of a novel one-pit three-furnace incinerator flue gas system;
FIG. 2 is a schematic view of the structure of an original one-pit three-furnace incinerator flue gas system:
FIG. 3 is a schematic view of an incinerator;
FIG. 4 is an enlarged view of the structure at A;
fig. 5 is an enlarged view of the structure at B.
Wherein, 1-garbage storage pit, 2-primary air blower I, 3-incineration boiler I, 4-deacidification tower, 5-dust remover, 6-SGH steam heater, 7-SCR flue gas denitration device, 8-induced draft fan, 9-vertical flue I, 10-vertical flue II, 11-vertical flue III, 12-horizontal flue, 13-economizer, 14-start air blower I, 15-auxiliary combustion air blower, 16-cooling air blower, 17-mechanical grate, 18-secondary air blower, 19-start air blower II, 20-fresh air blower, 21-filter screen, 22-silencer, 23-electric adjusting baffle, 24-air outlet isolating baffle, 25-primary air preheater I, 26-incineration boiler II, 27-fresh air outlet pipeline I, 28-fresh air outlet pipeline II, 29-primary air fan II, 30-pipeline I, 31-pipeline II, 32-incineration boiler III, 33-pipeline III, 34-fresh air outlet pipeline III, 35-primary air fan III, 36-deodorization device inlet electric door, 37-activated carbon adsorption device, 38-explosion-proof type deodorization fan, 39-deodorization device inlet filter screen and 40-SNCR denitration device.
Detailed Description
Problems existing in original design of primary air system of existing urban domestic garbage incinerator
1. When the originally designed boiler is started in a cold state, the boiler is influenced by the heat-resistant upper limit temperature of the material of the fire grate segment, a primary fan is generally started before the smoke temperature is 350 ℃ to cool the fire grate segment, otherwise, the fire grate segment expands unevenly, the fire grate segment tilts up to influence the service life of the fire grate, and the boiler is forced to be stopped and replaced when the boiler is serious; according to the research of the researchers of the Bailiangcheng and the like, the smoke stays for 0.5 second when the temperature of the smoke in the hearth reaches 700 ℃, so that the complete decomposition of dioxin and odor can be realized, and the smoke emission requirement is met; when the boiler is started in a cold state, starting a primary fan before the smoke temperature reaches 350 ℃, pumping odor from a garbage pit into a hearth, wherein according to a furnace starting temperature rising table, the time of each time reaches 5-6 hours in the process that the temperature of the hearth rises from 350 ℃ to 700 ℃, and the odor entering the boiler in the time period is not completely decomposed; the flue gas is only filtered by a dust remover and adsorbed by active carbon, and then is discharged from a chimney through a draught fan, so that the hidden danger of environmental pollution exists.
2. The original design of boiler shutdown maintenance or grate maintenance requires boiler shutdown maintenance; in the process of blowing out, before the garbage is completely burnt out, the furnace temperature is required to be maintained above 850 ℃, so that the requirement of dioxin decomposition is met; when the garbage on the fire grate is reduced, the oil gun is started to maintain the furnace temperature at 850 ℃, and the furnace can be stopped to reduce the temperature after the garbage is burnt out. In the process of blowing out, the temperature of the fire grate segment is higher, and the operation of a primary fan must be maintained to cool the fire grate segment; the primary fan pumps out odor from the garbage pit and continuously enters the hearth until the furnace temperature reaches below 300 ℃; in the process, the hidden danger of environmental pollution caused by incomplete combustion and decomposition of odor exists; and after blowing out, the furnace satisfies the maintenance condition, when the grate furnace maintenance manhole is opened for ventilation, the odor is larger, the maintenance working environment in the furnace is poor, and the working environment of a boiler room is polluted.
3. When the original designed boiler normally operates, a primary fan fails due to self reasons, and cannot be started in a short time, a spare primary fan is not provided, the flue gas index is easy to exceed the standard, and the boiler can only be shut down for maintenance; the boiler shutdown and startup will affect the service life of the boiler, and cause economic loss of enterprises.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
as shown in fig. 1-5, the one-pit three-furnace type town domestic garbage incinerator flue gas system comprises a garbage storage pit 1, wherein the garbage storage pit 1 is sequentially connected with a primary air fan I2, a primary air preheater I25 and an incineration boiler I3 through a pipeline I30; the garbage storage pit is sequentially connected with a primary fan II, a primary air preheater II and an incineration boiler II26 through a pipeline II 31; the garbage storage pit 1 is also connected with a deodorization device I and a deodorization device II, the deodorization device I and the deodorization device II respectively comprise a deodorization device inlet filter screen 39, a deodorization device inlet electric door 36, an active carbon absorption device 37 and an explosion-proof type deodorization fan 38 which are sequentially connected, the deodorization device I and the deodorization device II are arranged at two sides of the garbage storage pit 1 and are used for starting the deodorization fan device when the garbage pit incinerator is completely stopped, maintaining the negative pressure of the garbage pit and preventing the odor of the garbage pit from overflowing; the garbage storage pit is sequentially connected with a primary air fan III35, a primary air preheater III and an incineration boiler III32 through a pipeline III 33; the incineration boiler I3, the incineration boiler II26 and the incineration boiler III32 are connected with a tail gas treatment device, an induced draft fan 8 and a chimney, and a fresh air fan device is also connected among the pipeline I30, the pipeline II31 and the pipeline III33, so that fresh air is provided for boiler combustion when the boiler is started in a cold state and is shut down; a standby fan as a primary fan; the fresh air fan device comprises a fresh air fan, an air inlet end of the fresh air fan is communicated with outside air through a fresh air inlet pipeline, a filter screen 21 and a silencer 22 are sequentially arranged on the fresh air inlet pipeline along the airflow direction, the silencer can reduce fluid noise when the fan operates, and the filter screen pretreats the air of the fresh air fan to filter impurities in the air; the air outlet end of the fresh air fan 20 is respectively connected with a primary air pre-heater I25, a primary air pre-heater II and a primary air pre-heater III through a fresh air outlet pipeline I27, a fresh air outlet pipeline II28 and a fresh air outlet pipeline III35, and air outlet isolation baffles 24 are movably arranged on the fresh air outlet pipeline I, the fresh air outlet pipeline II and the fresh air outlet pipeline III 35; isolating the fresh air pipeline and the primary air pipeline; after the fresh air fan stops running, odor in a primary air pipeline is isolated, the odor is prevented from flowing back to enter the fresh air fan, and further the atmospheric environment is polluted; the vibration of the equipment is absorbed, and the influence of the vibration of the equipment on the pipeline is reduced; absorbing the deformation of the pipeline caused by earthquake and ground subsidence; electric adjusting baffle plates 23 are installed at the air inlet end and the air outlet end of the fresh air fan to adjust the fluid flow of the inlet and the outlet of the fresh air fan. The incinerator comprises an incineration boiler I3, an incineration boiler II26, a mechanical grate 17 is arranged at the bottom of the incineration boiler, a combined flue is arranged at the top of the incineration boiler and comprises a vertical flue I9, a vertical flue II10, a vertical flue III11 and a horizontal flue 12 which are sequentially connected, an SNCR denitration device 40 is arranged in the vertical flue I, the vertical flue II and the vertical flue III form an S-shaped flue, an economizer 13 is arranged at the tail end of the combined flue, an outlet of the economizer is connected with a tail gas treatment device, the tail gas treatment device comprises a deacidification tower 4, a dust remover 5, an SGH steam heater 6 and an SCR flue gas denitration device 7 which are sequentially connected, the incineration boiler is provided with a starting fan I, a starting fan II, an auxiliary fan 15 and a cooling fan 16, the starting fan I14, a starting fan II19, an auxiliary fan and a cooling fan, rubber expansion joint III is arranged at the air inlet ends of the starting fan, Incineration boiler II26, incineration boiler III32 still are connected with the overfire air fan device, and the overfire air fan device includes overfire air fan 18, equally divide on the air inlet end of overfire air fan, the air-out end pipeline and do not install rubber expansion joint II, and the air-out end of overfire air fan passes through the air preheater of once-through air and connects and burn burning furnace.
This waste incinerator wind cigarette system compares in original wind cigarette system and has following advantage:
1. after the system is optimized, odor overflow is reduced; when the boiler is started in a cold state, the inlet and outlet baffles of the primary fan are closed to prevent odor on the side of the garbage pit from entering, and the primary fan is prevented from reversing after the fresh air fan is started; and starting the fresh air fan after the induced draft fan is started. When the temperature of the furnace reaches 850 ℃, the primary air is supplied by a fresh air fan and is switched to a primary air fan to operate; through system optimization, the fire grate segment can be synchronously cooled from a room temperature state to a boiler thermal state, the expansion is more uniform, and the problem that the fire grate segment is tilted due to nonuniform expansion is solved; in the process that the temperature of the boiler is increased to 850 ℃, air is provided by the fresh air fan, and air is directly taken from the atmosphere, so that the problem of odor is avoided; after the furnace temperature reaches 850 ℃, the operation is switched to a primary fan, the negative pressure operation of the garbage pit is met, the odor of the garbage pit can be completely combusted after entering the furnace chamber, and the high standard meets the requirement of smoke emission;
2. after the system is optimized, the overhaul of a hearth and the working environment of a boiler room are improved; when the boiler needs to be shut down at every time, before garbage in the boiler is burnt out, the furnace temperature is guaranteed to be 850 ℃, the operation of the primary air fan is switched to the operation of the fresh air fan in the process that the auxiliary oil gun is thrown, so that odor in the hearth is combusted to the maximum extent, the odor concentration in the hearth is reduced, the odor during ventilation is reduced during shutdown maintenance, and the working environment of the boiler internal maintenance and the boiler room is improved.
3. After the system is optimized, the reliability of the operation of the primary air system is improved, the fault blowing-out time is reduced, and the economic benefit is improved; when the boiler normally operates, a primary fan causes heavy faults and cannot be started in a short period; the fresh air fan can be used as a standby fan of the primary fan, the furnace can be stopped, the failed primary fan can be overhauled, and meanwhile, the flue gas index is ensured to be normal; the environmental protection accidents are avoided, the hourly operation rate of the boiler is improved, the annual garbage treatment capacity is improved, and the economic benefit of a company is finally improved.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.

Claims (8)

1. A three stove formula cities and towns domestic waste incinerator wind cigarette systems in hole, including rubbish storage hole, its characterized in that: the garbage storage pit is sequentially connected with a primary fan I, a primary air preheater I and an incineration boiler I through a pipeline I, and is also connected with a deodorization device I and a deodorization device II; the garbage storage pit is sequentially connected with a primary fan II, a primary air preheater II and an incineration boiler II through a pipeline II; the garbage storage pit is sequentially connected with a primary fan III, a primary air preheater III and an incineration boiler III through a pipeline III; the incineration boiler I, the incineration boiler II and the incineration boiler III are connected with a tail gas treatment device, an induced draft fan and a chimney; a fresh air fan device is further connected among the pipeline I, the pipeline II and the pipeline III, the fresh air fan device comprises a fresh air fan, the air inlet end of the fresh air fan is communicated with the outside air through a fresh air inlet pipeline, a filter screen and a silencer are sequentially arranged on the fresh air inlet pipeline along the air flow direction, the air outlet end of the fresh air fan is respectively connected with a primary air pre-heater I, a primary air pre-heater II and a primary air pre-heater III through a fresh air outlet pipeline I, a fresh air outlet pipeline II and a fresh air outlet pipeline III, and air outlet isolation baffles are movably arranged on the fresh air outlet pipeline I, the fresh air outlet pipeline II and the fresh air outlet pipeline III; incineration boiler I, incineration boiler II, incineration boiler III bottom are provided with mechanical grate, dragveyer, incineration boiler I, incineration boiler II, incineration boiler III top are export exhaust-heat boiler, be provided with combined flue in the export exhaust-heat boiler, export exhaust-heat boiler's end is provided with the economizer, the exit linkage tail gas processing apparatus of economizer.
2. The one-pit three-furnace town domestic garbage incinerator air-smoke system as claimed in claim 1, wherein: the tail gas treatment device comprises a deacidification tower, a dust remover, an SGH steam heater and an SCR flue gas denitration reaction tower which are sequentially connected.
3. The one-pit three-furnace town domestic garbage incinerator air-smoke system as claimed in claim 1, wherein: and the pipelines of the air inlet end and the air outlet end of the fresh air fan are respectively provided with a rubber expansion joint I.
4. The one-pit three-furnace town domestic garbage incinerator air-smoke system as claimed in claim 1, wherein: the air inlet end and the air outlet end of the fresh air fan are both provided with electric adjusting baffles.
5. The one-pit three-furnace town domestic garbage incinerator air-smoke system as claimed in claim 1, wherein: the combined type flue comprises a vertical flue I, a vertical flue II, a vertical flue III and a horizontal flue which are sequentially connected, wherein the vertical flue I, the vertical flue II and the vertical flue III form an S-shaped flue.
6. The one-pit three-furnace town domestic garbage incinerator air-smoke system as claimed in claim 1, wherein: incineration boiler I, incineration boiler II, incineration boiler III still are connected with the secondary fan device, the secondary fan device includes secondary fan, it is provided with rubber expansion joint II respectively to divide equally on secondary fan's air inlet end, the air-out end pipeline, secondary fan's air-out end is connected through a wind air preheater and is burnt the burning furnace.
7. The one-pit three-furnace town domestic garbage incinerator air-smoke system as claimed in claim 1, wherein: incineration boiler I, incineration boiler II, incineration boiler III dispose start-up fan I, start-up fan II, assist and fire fan, cooling blower, the air inlet end that starts combustion fan I, starts combustion fan II, assists and fires fan, cooling blower all is provided with rubber expansion joint III.
8. The one-pit three-furnace town domestic garbage incinerator air-smoke system as claimed in claim 1, wherein: deodorizing device I, deodorizing device II all include deodorizing device entry filter screen, deodorizing device entry electrically operated gate, active carbon adsorption device and the explosion-proof type deodorization fan that connects gradually.
CN202010569718.8A 2020-06-20 2020-06-20 One-pit three-furnace type urban domestic garbage incinerator air-smoke system Pending CN111678135A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010569718.8A CN111678135A (en) 2020-06-20 2020-06-20 One-pit three-furnace type urban domestic garbage incinerator air-smoke system

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010569718.8A CN111678135A (en) 2020-06-20 2020-06-20 One-pit three-furnace type urban domestic garbage incinerator air-smoke system

Publications (1)

Publication Number Publication Date
CN111678135A true CN111678135A (en) 2020-09-18

Family

ID=72436748

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010569718.8A Pending CN111678135A (en) 2020-06-20 2020-06-20 One-pit three-furnace type urban domestic garbage incinerator air-smoke system

Country Status (1)

Country Link
CN (1) CN111678135A (en)

Similar Documents

Publication Publication Date Title
CN206924608U (en) Stench processing system for landfill leachate treatment station
CN212777350U (en) One-pit two-furnace type town domestic garbage incinerator air-smoke system
CN212777349U (en) One-pit one-furnace type town domestic garbage incinerator air-smoke system
CN212339252U (en) One-pit three-furnace type urban domestic garbage incinerator air-smoke system
CN111678135A (en) One-pit three-furnace type urban domestic garbage incinerator air-smoke system
CN205535842U (en) Two room heat accumulation after burner of domestic waste
CN216976798U (en) Air draft system for preventing odor from overflowing during start-stop of waste incineration power plant
CN216171156U (en) Energy-concerving and environment-protective emergent exhaust treatment device of RTO
CN113856400A (en) Energy-saving and environment-friendly RTO emergency waste gas treatment device and treatment method
CN114234203A (en) Prevent excessive exhaust system of odor during start-stop of msw incineration power plant
CN209926369U (en) Garbage bin deodorization system
CN113758292A (en) Coke oven raw gas waste heat comprehensive utilization device
CN111780151A (en) Novel combustion system of coal-fired boiler
CN102818275A (en) Optimization system for waste heat recovery of desulfurization island flue gas and operation of fans
CN215723302U (en) Low-pressure-drop heating furnace system
CN213272578U (en) Biomass hot water heating boiler
CN101074848A (en) System for treating kiln waste gas without external energy
CN216062612U (en) Dust removal device of biomass burner
KR102524193B1 (en) Odor control system of drying machines
CN220878379U (en) Alkali recovery boiler flue gas treatment system in paper industry
CN111351058A (en) Industrial boiler burns waste gas energy-saving processing device
CN109813130A (en) A kind of heat recovery coke oven high-temperature flue gas system
CN211040994U (en) Waste gas deodorization device for pharmaceutical wastewater treatment station
CN218001528U (en) Split multi-section RTO combustion furnace body
CN220321327U (en) Treatment system for sewage treatment VOCs waste gas and oil gas tail gas

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination