CN207599764U - A kind of smoke processing system - Google Patents
A kind of smoke processing system Download PDFInfo
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- CN207599764U CN207599764U CN201720976279.6U CN201720976279U CN207599764U CN 207599764 U CN207599764 U CN 207599764U CN 201720976279 U CN201720976279 U CN 201720976279U CN 207599764 U CN207599764 U CN 207599764U
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- flue gas
- processing system
- smoke processing
- waste heat
- heat
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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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Treating Waste Gases (AREA)
- Chimneys And Flues (AREA)
Abstract
The utility model provides a kind of smoke processing system, including waste heat boiler, heat exchanger, primary dust removing device and the two-stage dust removal device set gradually；Wherein, it is provided with depickling denitrification apparatus in the waste heat boiler.According to smoke processing system provided by the utility model, by setting depickling denitrification apparatus in waste heat boiler, alleviate the high temperature corrosion situation of waste heat boiler, and pass through heat exchanger and further utilize the waste heat of waste heat boiler discharge flue gas, the utilization rate of waste heat of smoke processing system is improved, so as to improve the benefit of refuse-burning plant.
Description
Technical field
The utility model is related to field of waste incineration, and specifically, the utility model is related to a kind of smoke processing systems.
Background technology
At present, there are mainly three types of modes for China's processing domestic waste：Landfill, compost and power generation by waste combustion.However as
The expansion of Chinese Urbanization scale, domestic waste increase year by year, and rubbish, which have occurred, in many places can bury without ground, nowhere may be used
The difficult situation of heap, the very severe of environment and problems of ecological security caused by domestic waste pollutes.Waste incineration can
It realizes garbage decrement, while occupation of land is reduced, can generate electricity, create certain economic benefit.
A large amount of flue gas can be generated in Refuse Incineration Process, contains HCl, Cl2And H2The flue gas of the harmful substances such as S, needs
The flue gas is handled, can be discharged after up to standard.Waste incineration mainstream depickling mode in the country's is semidry method at present, in rubbish
The flue gas generated in incinerator initially enters waste heat boiler and carries out UTILIZATION OF VESIDUAL HEAT IN, subsequently into spraying into calcium hydroxide in half-dried reaction tower
Solution is reacted with the sour gas in flue gas, to realize deacidifying flue gas.However in waste heat boiler, flue gas still containing a large amount of HCl,
Cl2And H2The sour gas such as S, and with the promotion of people's living standard, the calorific value of house refuse is also increasing, therefore
High temperature corrosion in waste heat boiler is particularly evident.The corruption of the high temperature of waste heat boiler inner wall is presently mainly alleviated by technique for overlaying
Rate is lost, but technique for overlaying is expensive, and belongs to passive protection measure, there is no solve high temperature corrosion from basis mechanism.
It is therefore desirable to propose a kind of new smoke processing system, to solve the above problems.
Utility model content
A series of concept of reduced forms is introduced in utility model content part, this will be in specific embodiment part
Middle further description.The utility model content part of the utility model is not meant to attempt to limit claimed
Technical solution key feature and essential features, do not mean that more attempt determine technical solution claimed guarantor
Protect range.
The utility model provides a kind of smoke processing system, and waste heat boiler, heat exchanger, level-one including setting gradually remove
Dirt device and two-stage dust removal device；
Wherein, it is provided with depickling denitrification apparatus in the waste heat boiler.
Further, the heat exchanger includes corrosion-resistant, heat safe teflon heat exchanger.
Further, the heat exchanger includes flue gas heat-exchange unit, is configured to the remaining of the flue gas discharged using the waste heat boiler
Heat heating enters feedwater or the air of the waste heat boiler.
Further, the heat exchanger includes flue gas heat-exchange unit, is configured to the remaining of the flue gas discharged using the waste heat boiler
Heat heats the flue gas of the two-stage dust removal device discharge.
Further, the primary dust removing device includes bag filter, the particulate matter being configured in removal flue gas.
Further, the two-stage dust removal device includes reaction equation bag filter, the acid being configured in removing flue gas
Matter and particulate matter.
Further, the smoke processing system further includes denitrification apparatus, is configured to remove by selective catalytic reduction
NO in flue gasX。
Further, the smoke processing system further includes wet method deacidifying device, the sour gas being configured in removing flue gas
And particulate matter.
Further, the smoke processing system further includes the second heat exchanger, is configured to utilize denitrification apparatus discharge
The flue gas that wet method deacidifying device described in the waste-heat of flue gas is discharged.
Further, the depickling denitrification apparatus includes at least the depickling denitrfying agent nozzle being arranged in the waste heat boiler.
According to smoke processing system provided by the utility model, by setting depickling denitrification apparatus in waste heat boiler, delay
The high temperature corrosion situation of waste heat boiler has been solved, and has passed through heat exchanger further using the waste heat of waste heat boiler discharge flue gas, has been improved
The utilization rate of waste heat of smoke processing system, so as to improving the benefit of refuse-burning plant.
Description of the drawings
The drawings below of the utility model is used to understand the utility model in this as the part of the utility model.Attached drawing
In show the embodiment and its description of the utility model, for explaining the device of the utility model and principle.In the accompanying drawings,
Fig. 1 is the structure diagram of the smoke processing system of the embodiment one of the utility model；
Fig. 2 is the structure diagram of the smoke processing system of the embodiment two of the utility model.
Attached drawing identifies
1st, waste heat boiler 2, heat exchanger
3rd, primary dust removing device 4, two-stage dust removal device
5th, chimney 6, depickling denitrification apparatus
7th, denitrification apparatus 8, wet method deacidifying device
9th, the second heat exchanger
Specific embodiment
In the following description, a large amount of concrete details are given more thoroughly to manage in order to provide to the utility model
Solution.It is, however, obvious to a person skilled in the art that the utility model may not need it is one or more of these thin
It saves and is carried out.In other examples, in order to avoid obscuring with the utility model, for more well known in the art
Technical characteristic is not described.
In order to thoroughly understand the utility model, detailed step will be proposed in following description, to illustrate this practicality
The smoke processing system of novel proposition.Obviously, the execution of the utility model is not limited to those skilled in the art and is familiar with
Specific details.The preferred embodiment of the utility model is described in detail as follows, however other than these detailed descriptions, this practicality is new
Type can also have other embodiment.
It should be understood that it when the term " comprising " and/or " including " is used in this specification, indicates described in presence
Feature, entirety, step, operation, element and/or component, but do not preclude the presence or addition of other one or more features, entirety,
Step, operation, element, component and/or combination thereof.
[embodiment one]
According to smoke processing system provided by the utility model, as shown in Figure 1, including waste heat boiler 1, heat exchanger 2, level-one
Dust-extraction unit 3, two-stage dust removal device 4, chimney 5 and the depickling denitrification apparatus 6 in the waste heat boiler.
Waste heat boiler 1 is configured to the heat of flue gas that recycling incineration firing generates.Incinerator (not shown in figure 1) for pair
House refuse carries out high temperature incineration, generates the flue gas for carrying heat, more than incinerator is connected with waste heat boiler 1 or incinerator is arranged on
In heat boiler 1, flue gas caused by burning enters waste heat boiler 1, and the heat entrained by flue gas is recycled by waste heat boiler.
Depickling denitrification apparatus 6 is provided in waste heat boiler 1, the depickling denitrification apparatus 6 is described remaining including at least being arranged on
Depickling denitrfying agent nozzle in heat boiler 1.Specifically, the depickling denitrfying agent nozzle sprays into deacidification agent into waste heat boiler 1, such as
CaCO3Or CaO etc., HCl, Cl of high temperature corrosion will be caused2And H2The acidic materials such as S partial removal is alleviated in waste heat boiler 1
High temperature corrosion.
Heat exchanger 2 includes teflon heat exchanger, and the heat exchanger produced using fluoroplastics is had corrosion-resistant, heat safe excellent
Point, operating temperature reach as high as 250 DEG C.Heat exchanger 2 is flue gas heat-exchange unit (GGH), and the flue gas that waste heat boiler 1 is discharged is about 220
DEG C, by flue gas heat-exchange unit further using waste heat, flue-gas temperature is down to about 150 DEG C, and in the present embodiment, flue gas heat-exchange unit will
This part of waste heat enters feedwater or the air of the waste heat boiler 1 for heating, and further improves the remaining of smoke processing system
Heat utilization efficiency.
Primary dust removing device 3 includes bag filter, for removing the particulate matter in flue gas, to avoid flying dust is generated.By
It is higher in above-mentioned particulate matter intrinsic heavy metal content, there is certain leachability, be consequently belonging to danger wastes, need security landfill
Or harmless treatment.
Two-stage dust removal device 4 includes reaction equation bag filter, is sprayed into the flue of reaction equation bag filter front end
Activated carbon and calcium hydroxide.Wherein, activated carbon can reduce the concentration of dioxin in flue gas, while adsorb HCl, Cl in flue gas2
And H2The acidic materials such as S, calcium hydroxide can be with HCl, Cl in flue gas2And H2The acidic materials such as S react, and realize acid in flue gas
The further removing of substance, reaction equation bag filter can also further remove the particulate matter in flue gas.
Smoke processing system provided by the utility model further includes chimney 5, meets discharge mark by what above device was handled
Accurate flue gas is discharged by chimney 5.
The course of work of smoke processing system provided by the utility model is：The flue gas that waste incineration generates initially enters remaining
Heat boiler 1 carries out UTILIZATION OF VESIDUAL HEAT IN, and depickling denitrification apparatus 6 sprays into deacidification agent into waste heat boiler 1 by HCl, Cl in flue gas2And H2S
Acidic materials partial removal is waited, the flue gas that waste heat boiler 1 is discharged, which enters heat exchanger 2, makes flue-gas temperature be reduced to about by about 220 DEG C
150 DEG C, this part of waste heat is entered feedwater or the air of waste heat boiler 1 by heat exchanger 2 for heating, by the flue gas of heat exchanger 2
Into primary dust removing device 3, to remove the particulate matter in flue gas, subsequent flue gas enters two-stage dust removal device 4, is filled in two-stage dust removal
The acidic materials further removed in 4 in flue gas, while the further particulate matter in removal flue gas are put, it is treated to meet row
The flue gas for putting standard is discharged via chimney 5.
[embodiment two]
According to smoke processing system provided by the utility model, when using minimum discharge standard processing flue gas, the cigarette
Gas processing system is as shown in Fig. 2, including waste heat boiler 1, heat exchanger 2, primary dust removing device 3, two-stage dust removal device 4, chimney 5,
Depickling denitrification apparatus 6 in the waste heat boiler 1, denitrification apparatus 7, wet method deacidifying device 8 and positioned at denitrification apparatus 7
The second heat exchanger 9 between wet method deacidifying device 8.
Waste heat boiler 1 is configured to the heat of flue gas that recycling incineration firing generates.Incinerator (not shown in figure 1) for pair
House refuse carries out high temperature incineration, generates the flue gas for carrying heat, more than incinerator is connected with waste heat boiler 1 or incinerator is arranged on
In heat boiler 1, flue gas caused by burning enters waste heat boiler 1, and the heat entrained by flue gas is recycled by waste heat boiler.
Depickling denitrification apparatus 6 is provided in waste heat boiler 1, the depickling denitrification apparatus 6 is described remaining including at least being arranged on
Depickling denitrfying agent nozzle in heat boiler 1.Specifically, the depickling denitrfying agent nozzle sprays into deacidification agent into waste heat boiler 1, such as
CaCO3Or CaO etc., HCl, Cl of high temperature corrosion will be caused2And H2The acidic materials such as S partial removal is alleviated in waste heat boiler 1
High temperature corrosion.
Heat exchanger 2 includes teflon heat exchanger, and the heat exchanger produced using fluoroplastics is had corrosion-resistant, heat safe excellent
Point, operating temperature reach as high as 250 DEG C.Heat exchanger 2 is flue gas heat-exchange unit (GGH), and the flue gas that waste heat boiler 1 is discharged is about 220
DEG C, by flue gas heat-exchange unit further using waste heat, flue-gas temperature is down to about 150 DEG C, and flue gas heat-exchange unit uses this part of waste heat
In the flue gas that heating is discharged by two-stage dust removal device 4, its temperature is made to enter denitrification apparatus 7 after being increased to 170 DEG C or more, further
Improve the utilization rate of waste heat of smoke processing system.
Primary dust removing device 3 includes bag filter, for removing the particulate matter in flue gas, to avoid flying dust is generated.By
It is higher in above-mentioned particulate matter intrinsic heavy metal content, there is certain leachability, be consequently belonging to danger wastes, need security landfill
Or harmless treatment.
Two-stage dust removal device 4 includes reaction equation bag filter, is sprayed into the flue of reaction equation bag filter front end
Activated carbon and calcium hydroxide.Wherein, activated carbon can reduce the concentration of dioxin in flue gas, while adsorb HCl, Cl in flue gas2
And H2The acidic materials such as S, calcium hydroxide can be with HCl, Cl in flue gas2And H2The acidic materials such as S react, and realize acid in flue gas
The further removing of substance, reaction equation bag filter can also further remove the particulate matter in flue gas.
Denitrification apparatus 7 carries out denitration using selective catalytic reduction (SCR) so that the NOx in flue gas exists with reducing agent
Low temperature (150-400 DEG C) reacts, to remove the NOx in flue gas.In the present embodiment, the reducing agent includes NH3。
Wet method deacidifying device 8 includes extracting tower, and flue gas enters from extracting tower lower part, and it is anti-that gas-liquid occurs with the lye in tower
Should, highly to remove the sour gas and particulate matter in flue gas.Top region reduces flue-gas temperature by recirculated cooling water, so as to
Reduce the water content in flue gas.
Second heat exchanger 9 is set between denitrification apparatus 7 and wet method deacidifying device 8, and use is corrosion-resistant, the modeling of heat safe fluorine
Expect heat exchanger.Second heat exchanger 9 is flue gas heat-exchange unit (GGH), utilizes the waste-heat wet method for the flue gas that denitrification apparatus 7 is discharged
The flue gas that deacidifying device 8 is discharged, the flue gas for meeting minimum discharge standard by the heating of the second heat exchanger 9 are discharged by chimney 5.
The course of work of smoke processing system provided by the utility model is：The flue gas that waste incineration generates initially enters remaining
Heat boiler 1 carries out UTILIZATION OF VESIDUAL HEAT IN, and depickling denitrification apparatus 6 sprays into deacidification agent into waste heat boiler 1 by HCl, Cl in flue gas2And H2S
Wait acidic materials partial removal, the flue gas that waste heat boiler 1 is discharged enters heat exchanger 2 further using waste heat, make flue-gas temperature by
About 220 DEG C are reduced to about 150 DEG C, enter primary dust removing device 3 by the flue gas of heat exchanger 2, to remove the particulate matter in flue gas,
Subsequent flue gas enters two-stage dust removal device 4, further removes the acidic materials in flue gas in two-stage dust removal device 4, while into
Particulate matter in one step removal flue gas, the flue gas discharged by two-stage dust removal device 4 again pass by heat exchanger 2, utilize waste heat boiler 1
The waste heat of the flue gas of discharge elevates the temperature enters denitrification apparatus 7 afterwards to 170 DEG C or more, by selectivity in denitrification apparatus 7
Catalytic reduction method (SCR) carries out the NOx in denitration removal flue gas, and the flue gas discharged by denitrification apparatus 7 first passes around the second heat exchange
Device 9 reduces temperature, and gas liquid reaction occurs subsequently into wet method deacidifying device 8 and lye highly to remove the sour gas in flue gas
And particulate matter, the flue gas discharged by wet method deacidifying device 8 is again introduced into the second heat exchanger 9 and increases temperature, treated to meet
The flue gas of minimum discharge standard is discharged via chimney 5.
According to smoke processing system provided by the utility model, by setting depickling denitrification apparatus in waste heat boiler, delay
The high temperature corrosion situation of waste heat boiler has been solved, and has passed through heat exchanger further using the waste heat of waste heat boiler discharge flue gas, has been improved
The utilization rate of waste heat of smoke processing system, so as to improving the benefit of refuse-burning plant.
The utility model is illustrated by above-described embodiment, but it is to be understood that, above-described embodiment is
For the purpose illustrated and illustrated, and it is not intended to the utility model being limited in the range of described embodiment.In addition ability
Field technique personnel are it is understood that the utility model is not limited to above-described embodiment, and introduction according to the present utility model is also
More kinds of variants and modifications can be made, these variants and modifications all fall within the utility model range claimed with
It is interior.The scope of protection of the utility model is defined by the appended claims and its equivalent scope.
Claims (8)
1. a kind of smoke processing system, which is characterized in that including the waste heat boiler, heat exchanger, primary dust removing device set gradually
With two-stage dust removal device；
Wherein, depickling denitrification apparatus is provided in the waste heat boiler, the depickling denitrification apparatus is described including at least being arranged on
Depickling denitrfying agent nozzle in waste heat boiler；
The heat exchanger includes corrosion-resistant, heat safe teflon heat exchanger.
2. smoke processing system as described in claim 1, which is characterized in that the heat exchanger includes flue gas heat-exchange unit, configuration
Waste-heat for the flue gas using waste heat boiler discharge enters feedwater or the air of the waste heat boiler.
3. smoke processing system as described in claim 1, which is characterized in that the heat exchanger includes flue gas heat-exchange unit, configuration
Flue gas for two-stage dust removal device discharge described in the waste-heat of the flue gas using waste heat boiler discharge.
4. smoke processing system as described in claim 1, which is characterized in that the primary dust removing device includes bag-type dust
Device, the particulate matter being configured in removal flue gas.
5. smoke processing system as described in claim 1, which is characterized in that the two-stage dust removal device includes reaction equation cloth bag
Deduster, the acidic materials and particulate matter being configured in removing flue gas.
6. smoke processing system as described in claim 1, which is characterized in that the smoke processing system further includes denitration dress
It puts, is configured to remove the NO in flue gas by selective catalytic reductionX。
7. smoke processing system as claimed in claim 6, which is characterized in that the smoke processing system further includes wet method depickling
Device, the sour gas and particulate matter being configured in removing flue gas.
8. smoke processing system as claimed in claim 7, which is characterized in that the smoke processing system further includes the second heat exchange
Device is configured to the flue gas using wet method deacidifying device discharge described in the waste-heat of the flue gas of denitrification apparatus discharge.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976279.6U CN207599764U (en) | 2017-08-04 | 2017-08-04 | A kind of smoke processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976279.6U CN207599764U (en) | 2017-08-04 | 2017-08-04 | A kind of smoke processing system |
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| Publication Number | Publication Date |
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| CN207599764U true CN207599764U (en) | 2018-07-10 |
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| CN201720976279.6U Active CN207599764U (en) | 2017-08-04 | 2017-08-04 | A kind of smoke processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986053A (en) * | 2019-11-19 | 2020-04-10 | 江苏中鼎环境工程股份有限公司 | Method for treating high-halogen hazardous waste |
-
2017
- 2017-08-04 CN CN201720976279.6U patent/CN207599764U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110986053A (en) * | 2019-11-19 | 2020-04-10 | 江苏中鼎环境工程股份有限公司 | Method for treating high-halogen hazardous waste |
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