CN206444447U - Bioxin Catalytic Reducing Purification device - Google Patents

Bioxin Catalytic Reducing Purification device Download PDF

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Publication number
CN206444447U
CN206444447U CN201621332369.3U CN201621332369U CN206444447U CN 206444447 U CN206444447 U CN 206444447U CN 201621332369 U CN201621332369 U CN 201621332369U CN 206444447 U CN206444447 U CN 206444447U
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combustion furnace
bioxin
reducing agent
outlet
catalytic
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CN201621332369.3U
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易少平
李志平
拜进
韩金星
刘衍江
彭忠林
代大海
陈玮
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JIANGXI NANFANG ENVIRONMENT PROTECTION MACHINERY MANUFACTURING HEADQUARTER
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JIANGXI NANFANG ENVIRONMENT PROTECTION MACHINERY MANUFACTURING HEADQUARTER
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    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02ATECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
    • Y02A50/00TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
    • Y02A50/20Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters

Abstract

The utility model discloses a kind of bioxin Catalytic Reducing Purification device, belong to waste incineration field of purification.Described device includes combustion furnace 1, and being connected with smoke eliminator 2, preheater 3, reducing agent in turn by combustion furnace 1 sprays premixed device 4, static mixer 5, catalyst reaction device 6, flue gas recovery device 7;The combustion furnace 1 is also associated with digital display monitoring control device 13 provided with combustion furnace material inlet 11, combustion furnace exhanst gas outlet 12, the gradual sealing Automatic grate 14 of bar shaped, waste residue collection box 15, the combustion furnace 1;Device described in the utility model can not only be up to 99.98% to the clearance that the flue gas and waste residue produced in Refuse Incineration Process handle bioxin, and the nitrogen oxides and stench in flue gas can in the lump be removed, in addition, monitor that control device can carry out intelligent monitoring to the situation in combustion furnace by digital display.

Description

Bioxin Catalytic Reducing Purification device
Technical field
The utility model belongs to waste incineration field of purification, and in particular to a kind of bioxin Catalytic Reducing Purification device.
Background technology
Bioxin is the general name for the material that a class can be combined and can caused various biochemical changes with aryl hydrocarbon receptor.It Both non-artificial production, and without any purposes, it is difficult to biodegradable, is enriched with food chain, and serious prestige is constituted to environment and health The side of body, it has also become the environmental problem and public health problem of global common concern.Bioxin is white crystals under normal temperature condition Material, is insoluble in water, remains to be stabilized in strong acid, highly basic and oxidant.The degradation of microorganism is to two in nature Evil English influences very little, and bioxin is more stable under the high temperature conditions, reaches that more than 750 DEG C can just decompose.Its toxicity with LD50 represents that technical term is " median lethal dose ".Its toxicity is very big, is 130 times, 900 times of arsenic of cyanide, There is the title of " century poison ".IARC has been classified as mankind's one-level carcinogenic substance.Bioxin in atmospheric environment 90% derives from city and industrial refuse and incineration.Bioxin is generated in burning process big during declining with flue-gas temperature Part is to be attached to fly ash granule surface in solid form, and fraction is remained in gas phase.But, lack at present to burning Flue gas and waste residue remaining the bioxin produced in journey carries out the device of integrated treatment.
The content of the invention
In order to solve the problem of prior art is present, the utility model is filled there is provided a kind of bioxin Catalytic Reducing Purification Put, to the flue gas and waste residue produced can not only handle the removal of , bioxin in Refuse Incineration Process by described device Rate is up to 99.98%, effectively prevent the harm that bioxin lower tape comes, and can be by the nitrogen oxides and stench in flue gas Remove in the lump.
In order to achieve the above object, the technical solution adopted in the utility model is as follows:
A kind of bioxin Catalytic Reducing Purification device, including combustion furnace 1, gas cleaning is connected with turn by combustion furnace 1 Device 2, preheater 3, reducing agent injection premixed device 4, static mixer 5, catalyst reaction device 6, flue gas recovery device 7;
The combustion furnace 1 is automatic provided with combustion furnace material inlet 11, combustion furnace exhanst gas outlet 12, the gradual sealing of bar shaped Fire grate 14, waste residue collection box 15, wherein combustion furnace material inlet 11 and combustion furnace exhanst gas outlet 12 are arranged on the upper of combustion furnace 1 Portion, bar shaped is gradual to be sealed Automatic grate 14 and puts in the bottom in combustion furnace 1, passes through the gradual sealing Automatic grate 14 of bar shaped Waste residue can be transported to the waste residue collection box 15 of the bottom of combustion furnace 1;The combustion furnace 1 is also associated with digital display monitoring control device 13, digital display monitoring control device 13 is used for monitored over time refuse pyrolysis processing procedure, after rubbish ignites, and opens digital display monitoring control Temperature in installation's power source switch processed, combustion furnace 1 is shown on digital display monitoring control device display screen;When temperature in combustion furnace 1 When reaching certain temperature, smoke eliminator 2 is started working, and transports waste residue while the gradual sealing Automatic grate 14 of strip starts To waste residue collection box 15;
Smoke eliminator 2 includes smoke eliminator entrance 21 and smoke eliminator outlet 22, the gas cleaning Device portal 21 is connected with combustion furnace exhanst gas outlet 12, and air purifying apparatus outlet 22 is connected with pre-heater inlet 31.
Further, the combustion furnace 1 can carry out second-time burning processing to waste residue.
Further, the reducing agent injection premixed device 4 includes reducing agent injection premixed device entrance 41, reducing agent injection in advance Mixed device outlet 42 and reducing agent spray gun 43, the reducing agent injection premixed device entrance 41 are connected with preheater outlet 32, described Ammonia is provided with reducing agent spray gun 43, grid is provided with the outlet port of the reducing agent spray gun 43, the reducing agent injection is pre- Mixed device outlet 42 is connected with static mixer entrance 51;Static mixer outlet 52 and circle are additionally provided with the static mixer 5 Disk 53, static mixer outlet 52 is connected with catalyst reaction device entrance 61;Catalysis is additionally provided with the catalyst reaction device 6 anti- Device is answered to export in 62, the inner chamber of catalyst reaction device 6 provided with the front and rear catalytic reduction catalysts layer 63 set and catalysis oxidation Catalyst layer 64, flue gas recovery device entrance 71 is connected by catalyst reaction device outlet 62.
Further, the catalytic reduction catalysts layer 63 includes denitration catalyst oxidant layer and rare earth metal layer.
Further, the reducing agent injection premixed device 4 has venturi tube structure.
Further, the static mixer 5 is an asymmetric u-tube structure, and inside is divided into some by disk 53 Mixed zone.
Further, four layers of mixed zone are divided into by disk 53 inside the static mixer 5.
Further, the preheater 3, reducing agent injection premixed device 4, static mixer 5 and catalytic reactor 6 constitute one Individual U-shaped structure.
Beneficial effect:Compared with prior art, a kind of bioxin Catalytic Reducing Purification device that the utility model is provided is not The flue gas and waste residue produced in Refuse Incineration Process can only be handled, the clearance of bioxin is up to 99.98%, effectively The harm that bioxin lower tape comes is avoided, and the nitrogen oxides and stench in flue gas can in the lump be removed.In addition, Monitor that control device can carry out intelligent monitoring to the situation in combustion furnace by digital display, can also be to place by flue gas recovery device Flue gas after reason is recycled.
Brief description of the drawings
Fig. 1 is a kind of structural representation of bioxin Catalytic Reducing Purification device of the utility model.
In figure:1- combustion furnaces, 11- combustion furnaces material inlet, 12- combustion furnaces exhanst gas outlet, 13- digital displays monitoring control dress Put, the gradual sealing Automatic grate of 14- bar shapeds, 15- waste residues collection box, 2- smoke eliminators, 21- smoke eliminators enter Mouth, the outlet of 22- smoke eliminators, the outlet of 3- preheaters, 31- pre-heater inlets, 32- preheaters, 4- reducing agents injection premix Device, 41- reducing agents injection premixed device entrance, the outlet of 42- reducing agents injection premixed device, 42- reducing agents spray gun, 5- static mixings Device, 51- static mixers entrance, 52- static mixer outlets, 53- disks, 6- catalyst reaction devices, 61- catalyst reaction devices Entrance, the outlet of 62- catalyst reaction devices, 63- catalytic reduction catalysts layer, 64- catalyst for catalytic oxidation layer, 7- off-gas recoveries dress Put, 71- flue gas recovery devices entrance, 71- flue gas recovery devices are exported.
Embodiment
The utility model is further elaborated with reference to the accompanying drawings and examples.
Embodiment
With reference to Fig. 1, a kind of bioxin Catalytic Reducing Purification device, including combustion furnace 1, it is connected with turn by combustion furnace 1 Smoke eliminator 2, preheater 3, reducing agent injection premixed device 4, static mixer 5, catalyst reaction device 6, off-gas recovery dress Put 7.
With reference to Fig. 1, the combustion furnace 1 is gradual provided with combustion furnace material inlet 11, combustion furnace exhanst gas outlet 12, bar shaped Automatic grate 14, waste residue collection box 15 are sealed, wherein combustion furnace material inlet 11 and combustion furnace exhanst gas outlet 12 is arranged on burning The top of stove 1, bar shaped is gradual to be sealed Automatic grate 14 and puts in the bottom in combustion furnace 1, by the gradual sealing of bar shaped certainly Dynamic fire grate 14 can transport waste residue to the waste residue collection box 15 of the bottom of combustion furnace 1;The combustion furnace 1 is also associated with digital display monitoring Control device 13, digital display monitoring control device 13 is used for monitored over time refuse pyrolysis processing procedure, after rubbish ignites, opens number Temperature in aobvious monitoring control device power switch, combustion furnace 1 is shown on digital display monitoring control device display screen;Work as combustion furnace Temperature reaches (temperature is 900 DEG C during rubbish primary combustion) during certain temperature in 1, and smoke eliminator 2 is started working, while bar The gradual sealing Automatic grate 14 of shape starts is transported to waste residue collection box 15 by waste residue;The combustion furnace 1 can carry out two to waste residue Secondary burning processing, when the waste residue of the bottom of combustion furnace 1 is transported to waste residue collection box 15 by the gradual sealing Automatic grate 14 of bar shaped, Because waste incineration Hou bioxin is attracted on flying dust, enter ash-slag disposal system with particulate matter, therefore waste residue can be entered Row secondary burning, now the temperature in combustion furnace 1 is 1200 DEG C.
With reference to Fig. 1, smoke eliminator 2 includes smoke eliminator entrance 21 and smoke eliminator outlet 22, described Smoke eliminator entrance 21 is connected with combustion furnace exhanst gas outlet 12, and air purifying apparatus outlet 22 is connected with pre-heater inlet 31.
With reference to Fig. 1, the reducing agent injection premixed device 4 has venturi tube structure, including reducing agent injection premixed device enters Mouth 41, reducing agent injection premixed device outlet 42 and reducing agent spray gun 43, the reducing agent injection premixed device entrance 41 and preheater Outlet 32 is connected, and ammonia is provided with the reducing agent spray gun 43, and reducing agent is injected into reducing agent and sprayed by reducing agent spray gun Mixed in premix barrel with flue gas, according to Venturi tube principle, reducing agent can be mixed into rapidly among flue gas and rapid vaporization.To increase Plus mixed effect so that reducing agent ammonia occupies larger space when spraying, and is set in the outlet port of the reducing agent spray gun 43 There is grid.The reducing agent injection premixed device outlet 42 is connected with static mixer entrance 51;Also set on the static mixer 5 There are static mixer outlet 52 and disk 53, the static mixer 5 is an asymmetric u-tube structure, inside is by disk 53 Four layers of mixed zone are divided into, static mixer outlet 52 is connected with catalyst reaction device entrance 61;
With reference to Fig. 1, be additionally provided with the catalyst reaction device 6 catalyst reaction device outlet 62, catalyst reaction device 6 it is interior Provided with the front and rear catalytic reduction catalysts layer 63 and catalyst for catalytic oxidation layer 64 set, the catalytic reduction catalysts layer in chamber 63 include denitration catalyst oxidant layer and rare earth metal layer.Work(of the setting of catalytic reduction catalysts layer with denitration and removal bioxin Can, effect of the setting with removing volatile organic matter of catalyst for catalytic oxidation layer.Connected by catalyst reaction device outlet 62 Cigarette receiving gas recovering device entrance 71.With reference to Fig. 1, the preheater 3, reducing agent injection premixed device 4, static mixer 5 and catalysis Reactor 6 constitutes a U-shaped structure.
The flue gas after preheating is heated by combustion gas in preheater, can by flue gas to 200 DEG C to 280 DEG C it Between, flue gas can carry out catalytic reaction at such a temperature.Flue gas after being heated up in preheater is entered in reducing agent injection premixed device, Reducing agent spray gun sprays to reducing agent sprays into reducing agent in premixed device, reducing agent then goes through static mixed with the flue gas after heating In clutch, provided with four layers of flue gas static mixing layer in static mixer, flue gas fills with reducing agent in flue gas static mixing layer Divide mixing.The mixture of reducing agent and flue gas is entered in catalytic reactor, the recall reducing catalyst in catalytic reactor with Nitre in flue gas, reducing agent reaction, removing flue gas is He bioxin.Here reducing agent be ammonia, denitration He bioxin it is specific Course of reaction is:Nitrogen oxides in flue gas reacts with ammonia in the presence of catalyst is converted into nitrogen and water, and cigarette Bioxin is converted into carbon dioxide, water, hydrogen chloride with oxygen in the presence of catalyst in gas;Chemical equation is:
NO2+NO+2NH3→2N 2+3H2O
4NO+O2+4NH3→4N 2+6H2O
2NO2+O2+4NH3→3N 2+6H2O
C12HnCl8-nO2+(9+0.5n)O2→(n-4)H 2O+12CO2+(8-n)HCl。
Flue gas after processing is effectively recycled into flue gas recovery device 7.Flue gas can be reached by catalyst To more than 98% purification of nitrogen oxides efficiency and more than 99.9% bioxin purification efficiencies, synchronous denitration Yu bioxin is realized Purpose, the waste residue through second-time burning, the clearance of Dui bioxin is 99.98%.To ensure the efficiency of heating surface, preheater is using combustion The mode of gas heating is heated to flue gas.Set gradually before and after above-mentioned each part and constitute a U-shaped, horizontal side can be reduced To size, to make full use of the space in workshop.

Claims (8)

1. a kind of bioxin Catalytic Reducing Purification device, it is characterised in that:Including combustion furnace (1), connected successively by combustion furnace (1) It is connected to smoke eliminator (2), preheater (3), reducing agent injection premixed device (4), static mixer (5), catalyst reaction device (6), flue gas recovery device (7);
The combustion furnace (1) is provided with combustion furnace material inlet (11), combustion furnace exhanst gas outlet (12), the gradual sealing of bar shaped certainly Dynamic fire grate (14), waste residue collection box (15), wherein combustion furnace material inlet (11) and combustion furnace exhanst gas outlet (12) are arranged on combustion The top of stove (1) is burnt, the gradual sealing Automatic grate (14) of bar shaped is arranged on the bottom of combustion furnace (1), gradual by bar shaped Sealing Automatic grate (14) can transport waste residue to the waste residue collection box (15) of combustion furnace (1) bottom;The combustion furnace (1) is also Digital display monitoring control device (13) is connected with, digital display monitoring control device (13) is used for monitored over time refuse pyrolysis processing procedure, After rubbish ignites, open the temperature in digital display monitoring control device power switch, combustion furnace (1) and be shown in digital display monitoring control On device display screen;When combustion furnace (1) interior temperature reaches certain temperature, smoke eliminator (2) is started working, while strip Gradual sealing Automatic grate (14) starts is transported to waste residue collection box (15) by waste residue;
Smoke eliminator (2) includes smoke eliminator entrance (21) and smoke eliminator outlet (22), and the flue gas is net Makeup posting port (21) is connected with combustion furnace exhanst gas outlet (12), and air purifying apparatus outlet (22) is connected with pre-heater inlet (31)。
2. a kind of bioxin Catalytic Reducing Purification device according to claim 1, it is characterised in that:The combustion furnace (1) Second-time burning processing can be carried out to waste residue.
3. a kind of bioxin Catalytic Reducing Purification device according to claim 1, it is characterised in that:The reducing agent injection Premixed device (4) includes reducing agent injection premixed device entrance (41), reducing agent injection premixed device outlet (42) and reducing agent spray gun (43), the reducing agent injection premixed device entrance (41) is connected with preheater outlet (32), in the reducing agent spray gun (43) Provided with ammonia, grid, the reducing agent injection premixed device outlet (42) are provided with the outlet port of the reducing agent spray gun (43) It is connected with static mixer entrance (51);Static mixer outlet (52) and disk are additionally provided with the static mixer (5) (53), static mixer outlet (52) is connected with catalyst reaction device entrance (61);It is additionally provided with the catalyst reaction device (6) Catalyst reaction device exports (62), provided with the front and rear catalytic reduction catalysts layer set in the inner chamber of catalyst reaction device (6) (63) and catalyst for catalytic oxidation layer (64), by catalyst reaction device export (62) connect flue gas recovery device entrance (71).
4. a kind of bioxin Catalytic Reducing Purification device according to claim 3, it is characterised in that:The catalysis reduction is urged Agent layer (63) includes denitration catalyst oxidant layer and rare earth metal layer.
5. a kind of bioxin Catalytic Reducing Purification device according to claim 1, it is characterised in that:The reducing agent injection Premixed device (4) has venturi tube structure.
6. a kind of bioxin Catalytic Reducing Purification device according to claim 1, it is characterised in that:The static mixer (5) it is an asymmetric u-tube structure, inside is divided into some mixed zones by disk (53).
7. a kind of bioxin Catalytic Reducing Purification device according to claim 1, it is characterised in that:The static mixer (5) it is internal that four layers of mixed zone are divided into by disk (53).
8. a kind of bioxin Catalytic Reducing Purification device according to claim 1, it is characterised in that:The preheater (3), Reducing agent injection premixed device (4), static mixer (5) and catalyst reaction device (6) constitute a U-shaped structure.
CN201621332369.3U 2016-12-07 2016-12-07 Bioxin Catalytic Reducing Purification device Active CN206444447U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201621332369.3U CN206444447U (en) 2016-12-07 2016-12-07 Bioxin Catalytic Reducing Purification device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201621332369.3U CN206444447U (en) 2016-12-07 2016-12-07 Bioxin Catalytic Reducing Purification device

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108716688A (en) * 2018-06-27 2018-10-30 北京蓝图工程设计有限公司 A kind of coal-burning boiler and method of flue gas nitrogen oxide low emission

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108716688A (en) * 2018-06-27 2018-10-30 北京蓝图工程设计有限公司 A kind of coal-burning boiler and method of flue gas nitrogen oxide low emission

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