CN109482064A - Medical wastes incineration gas mercury and dioxin advanced treatment system - Google Patents
Medical wastes incineration gas mercury and dioxin advanced treatment system Download PDFInfo
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- CN109482064A CN109482064A CN201811400502.8A CN201811400502A CN109482064A CN 109482064 A CN109482064 A CN 109482064A CN 201811400502 A CN201811400502 A CN 201811400502A CN 109482064 A CN109482064 A CN 109482064A
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- dioxin
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- wastes incineration
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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
- B01D53/86—Catalytic processes
- B01D53/869—Multiple step processes
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8659—Removing halogens or halogen compounds
- B01D53/8662—Organic halogen compounds
-
- 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
- B01D53/86—Catalytic processes
- B01D53/8665—Removing heavy metals or compounds thereof, e.g. mercury
-
- 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
- F23G7/003—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals for used articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/206—Organic halogen compounds
- B01D2257/2064—Chlorine
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/60—Heavy metals or heavy metal compounds
- B01D2257/602—Mercury or mercury compounds
-
- 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
- B01D2258/0291—Flue gases from waste incineration plants
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/20—Medical materials
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- 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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Biomedical Technology (AREA)
- Analytical Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Processing Of Solid Wastes (AREA)
- Exhaust Gas Treatment By Means Of Catalyst (AREA)
- Catalysts (AREA)
Abstract
The present invention discloses a kind of medical wastes incineration gas mercury and dioxin advanced treatment system, deep purifying for incineration flue gas mercury and dioxin, including medical wastes incineration device, low temperature SCO tower and oxidation catalyst bed, medical wastes incineration device has exhanst gas outlet；Low temperature SCO tower has gas access and gas vent, and the gas access of low temperature SCO tower is connected to the exhanst gas outlet of medical wastes incineration device；Oxidation catalyst bed accessory has entrance and exit, and the entrance of oxidation catalyst bed is connected to the gas vent of low temperature SCO tower, and the outlet of oxidation catalyst bed is communicated with the atmosphere.The medical wastes incineration gas mercury and dioxin advanced treatment system can further decrease the concentration of emission of dioxin and the concentration of emission of mercury, further to purify air.
Description
Technical field
The present invention relates to the gas mercuries and two after a kind of medical wastes incineration technical field more particularly to medical wastes incineration
Dislike the advanced treatment apparatus of English.
Background technique
In recent years, the discharge of the pollutants such as dioxin, the heavy metal that incineration of waste process generates is increasingly by people's
Pay attention to, country is more and more tighter to the emission request of pollutant in flue gas, national ecological environment portion (former State Ministry of Environmental Protection) in 2014
" dangerous waste incineration contamination control standard " (exposure draft) is issued, wherein dioxin in flue gas concentration limit is
0.1TEQ ng/m3。
Currently, domestic generally use fume high-temperature burning+flue gas chilling+active carbon injection+bag-type dust technical controlling
The pollutant emissions such as dioxins in flue gas, the technology are primarily present the problems such as dioxin removal efficiency is not high, stability up to standard is poor.
In recent years, many new technologies are developed around improvement China of dioxins in flue gas, but due to containing chlorine in clinical waste
Plastics are more, and complicated components change greatly, the pollutant concentrations fluctuation such as dioxin concentration height, dioxin and mercury in incineration flue gas
Greatly, therefore, there is an urgent need to develop one kind can deep purifying dioxin, and adapt to complicated working condition, removal effect is good, fortune
The combination unit of the realization mercury and dioxin minimum discharge of row stable operation.
At this stage, medical wastes incineration technical field still has following problem:
1. dioxin concentration is high in medical wastes incineration flue gas, up to 8.3TEQ ng/m3, difficulty of governance is big, existing skill
Art is difficult to reach 0.1TEQ ng/m3Below；
2. clinical waste chlorine-bearing compound is more, complicated components, the pollutant concentrations such as dioxin, mercury variation fluctuation in incineration flue gas
Greatly, stability up to standard is poor；
3. low-temperature plasma electrical source needs manual adjustment parameter, it is affected by human factors greatly, power supply is be easy to cause to damage.
It is urgent to provide the clinical waste collection devices that one kind can collect gas mercury and dioxin for this field, further to drop
The discharge of low mercury in flue gas and dioxin, to purify air.
Above- mentioned information are only used for reinforcing the understanding to background of the invention disclosed in the background technology part.
Summary of the invention
A primary object of the present invention is to overcome at least one defect of the above-mentioned prior art, provide a kind of medical useless
Object incineration flue gas mercury and dioxin advanced treatment system, to further decrease the discharge of mercury and dioxin.
For achieving the above object, the present invention adopts the following technical scheme:
According to an aspect of the invention, there is provided a kind of medical wastes incineration gas mercury and dioxin advanced treating system
System, for collecting mercury and dioxin, including medical wastes incineration device, low temperature SCO tower and oxidation catalyst bed: clinical waste is burnt
Burning device has exhanst gas outlet；Low temperature SCO tower has gas access and gas vent, and the gas access of the low temperature SCO tower connects
Pass through the exhanst gas outlet of the medical wastes incineration device；Oxidation catalyst bed accessory has entrance and exit, the oxidation catalyst bed
Entrance is connected to the gas vent of the low temperature SCO tower, and the outlet of the oxidation catalyst bed is communicated with the atmosphere.
According to an embodiment of the present invention, wherein Hg in the low temperature SCO tower0Hg can be oxidized to2+, dioxin oxidation
It is decomposed into CO2、H2O and HCL.
According to an embodiment of the present invention, described wherein the reaction temperature of the low temperature SCO tower is 170 DEG C~220 DEG C
The reaction temperature of oxidation catalyst bed is 80 DEG C~170 DEG C.
According to an embodiment of the present invention, wherein the exhanst gas outlet dioxin concentration model of the medical wastes incineration device
Enclose 1~5ngTEQ/m3, 0.03~0.05mg/m of Hg concentration range3, the reaction temperature of the low temperature SCO tower is 200 DEG C~220
DEG C, the reaction temperature of the oxidation catalyst bed is 120 DEG C~170 DEG C.
According to an embodiment of the present invention, wherein the exhanst gas outlet dioxin concentration model of the medical wastes incineration device
Enclose 0.5~1ngTEQ/m3, 0.02~0.04mg/m of Hg concentration range3, the reaction temperature of the low temperature SCO tower is 170 DEG C~200
DEG C, the reaction temperature of the oxidation catalyst bed is 80 DEG C~120 DEG C.
According to an embodiment of the present invention, wherein filling porous material, material specific surface in the oxidation catalyst bed
Product is 200~800m2/g。
According to an embodiment of the present invention, wherein filling the porous material of ceramic nano unimolecule in the oxidation catalyst bed
Material.
According to an embodiment of the present invention, wherein the bottom of the low temperature SCO tower is provided with heat exchanger, the medical treatment is useless
The waste heat that object incinerator generates can be entered in the low temperature SCO tower by the heat exchanger.
According to an embodiment of the present invention, wherein the medical wastes incineration device include the pyrolysis oven being sequentially communicated,
Incinerator, lye desulfurizing tower and bag filter, wherein the outlet of bag filter is connected to the entrance of low temperature SCO tower.
As shown from the above technical solution, medical wastes incineration gas mercury of the invention and dioxin advanced treatment system is excellent
It puts and has the active effect that the medical wastes incineration gas mercury and dioxin advanced treatment system can further decrease dioxin
Concentration of emission and mercury concentration of emission, further to purify air.
Detailed description of the invention
Consider following the following detailed description of the embodiment of the present invention in conjunction with the accompanying drawings, various targets of the invention,
Feature and advantage will become apparent.Attached drawing is only exemplary diagram of the invention, is not necessarily drawn to scale.
In the accompanying drawings, same appended drawing reference always shows same or similar component.Wherein:
Fig. 1 is a kind of medical wastes incineration gas mercury and dioxin advanced treating shown according to an illustrative embodiments
The partial structure diagram of system.
Fig. 2 is according to the medical wastes incineration gas mercury and dioxin advanced treatment system shown in an illustrative embodiments
Flow chart.
Wherein, the reference numerals are as follows:
101, pyrolysis oven；102, incinerator；
103, heat exchanger；104, lye extracting tower；
105, bag filter；106, low temperature SCO tower；
107, oxidation catalyst bed；108, blower.
Specific embodiment
Example embodiment is described more fully with reference to the drawings.However, example embodiment can be with a variety of shapes
Formula is implemented, and is not understood as limited to embodiment set forth herein；On the contrary, thesing embodiments are provided so that the present invention will
Fully and completely, and by the design of example embodiment comprehensively it is communicated to those skilled in the art.Identical attached drawing in figure
Label indicates same or similar structure, thus the detailed description that will omit them.
Referring to Figures 1 and 2, according to an aspect of the invention, there is provided a kind of medical wastes incineration gas mercury and two is disliked
English advanced treatment system, for collecting mercury and dioxin, including medical wastes incineration device, low temperature SCO tower 106 and oxidation touching
Matchmaker's bed 107；Medical wastes incineration device has exhanst gas outlet；Low temperature SCO tower 106 has gas access and gas vent, described
The gas access of low temperature SCO tower 106 is connected to the exhanst gas outlet of the medical wastes incineration device；Oxidation catalyst bed 107 has
Entrance and exit, the entrance of the oxidation catalyst bed 107 are connected to the gas vent of the low temperature SCO tower 106, the oxidation touching
The outlet of matchmaker's bed 107 is communicated with the atmosphere.The medical wastes incineration gas mercury and dioxin advanced treatment system can further drop
The concentration of emission of low dioxin and the concentration of emission of mercury, further to purify air.Such as, but not limited to, wherein dioxin is gone
Except rate can be greater than 98%, the removal rate of mercury can be greater than 80%.
With continued reference to Fig. 1 and Fig. 2, according to an embodiment of the present invention, wherein clinical waste can be introduced into medical treatment
It is burned in waste calcining facility, low temperature SCO tower 106 can be entered by the flue gas of medical wastes incineration device discharge, it should
It is disposed with catalyst in low temperature SCO tower 106, after catalysed oxidn, Hg in flue gas0Catalysis oxidation is Hg2+, and be adsorbed
It removes, dioxin is decomposed into CO by catalysis oxidation in flue gas2、H2O, HCL etc..
Through low temperature SCO tower 106, treated that flue gas enters oxidation catalyst bed 107, can fill in the oxidation catalyst bed 107
There is ceramic nano unimolecule porous material, which can be with silicon or ceramics as the nano material of carrier, and but not limited to this,
By can effectively adsorb heavy metal, oil, polymer, ammonia nitrogen and organic contamination after controllable pore-forming and single layer functional molecular self assembly
Object etc..The specific surface area of ceramic nano unimolecule porous material can be 200~800m2/ g, the porous material of ceramic nano unimolecule
Material can be to Hg2+、Hg+And the mercury compound and dioxin of molecular state have extremely strong suction-operated.By medical wastes incineration
After gas mercury and the processing of dioxin advanced treatment system, 0.1TEQ ng/m can be less than by discharging dioxin concentration in flue gas3, mercury
Concentration can be less than 0.01mg/m3。
According to an embodiment of the present invention, wherein the reaction temperature of the low temperature SCO tower 106 can be 170 DEG C~220
DEG C, the reaction temperature of the oxidation catalyst bed 107 can be 80 DEG C~170 DEG C.
Currently, through medical wastes incineration device burning after exhanst gas outlet dioxin concentration range be 0.4~
5ngTEQ/m3, the concentration range of mercury is 0.008~0.05mg/m3.It can be changed according to pollutant concentrations such as dioxins in flue gas and be adjusted
System run parameter, such as in production system to open dioxins in flue gas in furnace temperature-rise period, mercury pollutant concentration higher, such as
Dioxin concentration range is 1~5ngTEQ/m3, Hg concentration range is 0.03~0.05mg/m3In the case where, it needs to react SCO
Temperature be adjusted to 200 DEG C or more, 107 reaction temperature of oxidation catalyst bed be adjusted to 120 DEG C or more, and operated normally in production system
When, such as dioxin concentration range can be 0.5~1ngTEQ/m3, Hg concentration range can be 0.02~0.04mg/m3Feelings
Under condition, adjustable to 170 DEG C or more of low temperature SCO 106 reaction temperatures of tower, 107 reaction temperature of oxidation catalyst bed are adjusted to 40 DEG C
More than.
Embodiment one
According to an embodiment of the present invention, wherein when medical wastes incineration device exhanst gas outlet dioxin concentration range
For 1~5ngTEQ/m3, Hg concentration range is 0.03~0.05mg/m3In the case where, the reaction temperature of the low temperature SCO tower 106
It can be 200 DEG C~220 DEG C, the reaction temperature of the oxidation catalyst bed 107 can be 120 DEG C~170 DEG C.Using clinical waste
After incineration flue gas mercury and the processing of dioxin advanced treatment system, dioxin removal efficiency may be implemented greater than 98.3%, oxidation is touched
The outlet dioxin concentration of matchmaker's bed 107 can be lower than 0.098ngTEQ/m3Below；Mercury removal efficiency is greater than 80%, oxidation catalyst
The outlet mercury concentration of bed 107 is less than 0.01mg/m3。
Embodiment two
According to an embodiment of the present invention, wherein the exhanst gas outlet dioxin concentration model of the medical wastes incineration device
Enclosing can be 0.5~1ngTEQ/m3, Hg concentration range can be 0.02~0.04mg/m3In the case where, the low temperature SCO tower
106 reaction temperature can be 170 DEG C~200 DEG C, and the reaction temperature of the oxidation catalyst bed 107 can be 80 DEG C~120 DEG C.
, it can be achieved that dioxin removal efficiency is greater than after being handled using medical wastes incineration gas mercury and dioxin advanced treatment system
95%, the outlet dioxin concentration of oxidation catalyst bed 107 can be with 0.08ngTEQ/m3.Mercury removal efficiency can be greater than 75%, oxygen
The outlet mercury concentration for changing catalyst bed 107 can be less than 0.01mg/m3。
Referring to Figures 1 and 2, according to an embodiment of the present invention, wherein filling porous material in the oxidation catalyst bed 107
Material, material specific surface area can be 200~800m2/g.According to an embodiment of the present invention, wherein the oxidation catalyst bed
Ceramic nano unimolecule porous material is filled in 107.
Referring to Figures 1 and 2, according to an embodiment of the present invention, wherein the bottom of the low temperature SCO tower 106 is provided with
Heat exchanger 103, the waste heat that the medical wastes incineration device generates can enter the low temperature by the heat exchanger 103
In SCO tower 106, so as to improve the energy utilization rate of medical wastes incineration gas mercury and dioxin advanced treatment system.
Referring to Figures 1 and 2, according to an embodiment of the present invention, wherein the medical wastes incineration device includes successively
Pyrolysis oven 101, incinerator 102, lye extracting tower 104 and the bag filter 105 of connection, wherein bag filter 105
Outlet is connected to the entrance of low temperature SCO tower 106.Flue gas after bag filter 105 enters low temperature SCO tower 106, passes through heat exchange
Device 103 controls 170 DEG C~220 DEG C of catalyst reaction temperatures, and the dioxin in flue gas is removed by catalytic decomposition, while in flue gas
Mercury is by catalysis oxidation and Adsorption.A specific embodiment according to the present invention, wherein bag filter 105 and low temperature SCO
Air-introduced machine (not shown) can be can be set, on the pipeline between tower 106 to control air quantity and wind by pipeline connection
To.Wherein blower 108 has can be set on the gas exhaust piping of oxidation catalyst bed 107 in a specific embodiment according to the present invention.
Described feature, structure or characteristic can be incorporated in one or more embodiments in any suitable manner
In.In the above description, many details are provided to provide and fully understand to embodiments of the present invention.However,
It will be appreciated by persons skilled in the art that technical solution of the present invention can be practiced without one in the specific detail or more
It is more, or can be using other methods, component, material etc..In other cases, be not shown in detail or describe known features,
Material or operation are to avoid fuzzy each aspect of the present invention.
Claims (9)
1. a kind of medical wastes incineration gas mercury and dioxin advanced treatment system are used for deep purifying mercury and dioxin, special
Sign is, comprising:
Medical wastes incineration device has exhanst gas outlet；
Low temperature SCO tower has gas access and gas vent, and it is useless that the gas access of the low temperature SCO tower is connected to the medical treatment
The exhanst gas outlet of object incinerator；And
Oxidation catalyst bed, has entrance and exit, and the gas that the entrance of the oxidation catalyst bed is connected to the low temperature SCO tower goes out
Mouthful, the outlet of the oxidation catalyst bed is communicated with the atmosphere.
2. medical wastes incineration gas mercury as described in claim 1 and dioxin advanced treatment system, which is characterized in that described
Hg in low temperature SCO tower0Hg can be oxidized to2+, dioxin oxygenolysis is CO2、H2O and HCL.
3. medical wastes incineration gas mercury as described in claim 1 and dioxin advanced treatment system, which is characterized in that described
The reaction temperature of low temperature SCO tower is 170 DEG C~220 DEG C, and the reaction temperature of the oxidation catalyst bed is 80 DEG C~170 DEG C.
4. medical wastes incineration gas mercury as claimed in claim 3 and dioxin advanced treatment system, which is characterized in that described
1~5ngTEQ/m of exhanst gas outlet dioxin concentration range of medical wastes incineration device3, 0.03~0.05mg/ of Hg concentration range
m3, the reaction temperature of the low temperature SCO tower is 200 DEG C~220 DEG C, and the reaction temperature of the oxidation catalyst bed is 120 DEG C~170
℃。
5. medical wastes incineration gas mercury as claimed in claim 3 and dioxin advanced treatment system, which is characterized in that described
0.5~1ngTEQ/m of exhanst gas outlet dioxin concentration range of medical wastes incineration device3, Hg concentration range 0.02~
0.04mg/m3, the reaction temperature of the low temperature SCO tower is 170 DEG C~200 DEG C, and the reaction temperature of the oxidation catalyst bed is 80
DEG C~120 DEG C.
6. medical wastes incineration gas mercury as described in claim 1 and dioxin advanced treatment system, which is characterized in that described
Porous material is filled in oxidation catalyst bed, material specific surface area is 200~800m2/g。
7. medical wastes incineration gas mercury as claimed in claim 6 and dioxin advanced treatment system, which is characterized in that described
Ceramic nano unimolecule porous material is filled in oxidation catalyst bed.
8. medical wastes incineration gas mercury as described in claim 1 and dioxin advanced treatment system, which is characterized in that described
The bottom of low temperature SCO tower is provided with heat exchanger, and the waste heat that the medical wastes incineration device generates can pass through the heat exchanger
It enters in the low temperature SCO tower.
9. medical wastes incineration gas mercury as described in claim 1 and dioxin advanced treatment system, which is characterized in that described
Medical wastes incineration device includes the pyrolysis oven being sequentially communicated, incinerator, lye desulfurizing tower and bag filter, wherein cloth bag
The outlet of deduster is connected to the entrance of low temperature SCO tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811400502.8A CN109482064A (en) | 2018-11-22 | 2018-11-22 | Medical wastes incineration gas mercury and dioxin advanced treatment system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811400502.8A CN109482064A (en) | 2018-11-22 | 2018-11-22 | Medical wastes incineration gas mercury and dioxin advanced treatment system |
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| Publication Number | Publication Date |
|---|---|
| CN109482064A true CN109482064A (en) | 2019-03-19 |
Family
ID=65697573
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811400502.8A Pending CN109482064A (en) | 2018-11-22 | 2018-11-22 | Medical wastes incineration gas mercury and dioxin advanced treatment system |
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Cited By (1)
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| CN110605015A (en) * | 2019-10-18 | 2019-12-24 | 王�锋 | Flue gas treatment equipment and method for reducing flue gas harm |
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