CN206372687U - The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined - Google Patents
The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined Download PDFInfo
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- CN206372687U CN206372687U CN201621233539.2U CN201621233539U CN206372687U CN 206372687 U CN206372687 U CN 206372687U CN 201621233539 U CN201621233539 U CN 201621233539U CN 206372687 U CN206372687 U CN 206372687U
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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
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Abstract
The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined, designs the desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined.The utility model is in order to which solve in the prior art can be while the unit efficiency for carrying out desulfurization and denitration be low, common brick and hardened cement are difficult to the problem of thermal loss is big in recycle and combustion product gases in building waste.The device includes dryer, condenser, adsorption tower, denitrating tower, dry desulfurizing tower, device for generating power by waste heat, cyclone separator and wet desulfuration tower；Absorption material in the adsorption chamber of adsorption tower is common brick particle or hardened cement particle in building waste.The device possesses splendid desulphurization denitration function, desulfurization degree and denitration rate are above the setting in national standard, adsorption tower can reduce flue gas to desulfurization and the pollution of the equipment of denitration, reduce the consumption of desulfurizing agent and denitrfying agent, the device can be generated electricity with saving water resource heat recovery.The utility model is applied to fume treatment.
Description
Technical field
The utility model is related to the desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined.
Background technology
SO2It is two kinds of main gaseousness atmosphere pollutions with NOx, they are mainly produced by burning or other chemical processes
And with fume emission into air.The desulfurization of flue gas mainly has wet method and the class of dry method two at present, and dry method is sprayed into using lime slurry
Desulfurizing tower, in the presence of high-temperature flue gas, the water in slurries is evaporated quickly, and the lime in slurries is analysed with the form of solid particle
Go out, and by the SO in flue gas2Absorption is removed on its surface；SO is adsorbed2Solid lime particle then with the dust in flue gas
Together, removed by sack cleaner below；Wet desulphurization then elutes SO using diluter lime liquor in spray column2, stone
The addition of ash is added according to pH control requirement, acid range of the pH general controls 6 or so.SO2Water is absorbed into first
Phase, forms sulfurous acid and and CaCO in water3(or Ca (OH)2) reaction generation calcium sulfite, calcium bisulfite and calcium sulfate.Remove
Lime or lime stone, the basic matterial as flue gas desulfurization also have NaOH, ammoniacal liquor, MgO etc..The denitration of flue gas is divided into reducing process
With the class of oxidizing process two, reducing process uses ammonia or urea as reducing agent, uses V2O5Temperature as catalyst at 300-400 DEG C
Under the conditions of carry out, or the NOx in flue gas is optionally reduced into nitrogen under 1000 DEG C of temperature conditionss without using catalyst.
Selective catalytic reduction is due to needing to use the catalyst containing transition metal, and catalyst can be ground by dust in flue gas
Damage and need often to change, while there is the problems such as NH_3 leakage and temperature conditionss are harsh, it is using being subject to certain restrictions, selectivity
Non-catalytic reduction rule denitration effect can not meet strict NOx emission standard, thus its use it is also restrained.And oxidizing process
Then use ozone and H2O2The NO (account for NOx in flue gas more than 90%) in NOx is oxidized to what is easily eluted Deng oxidant
NO2Or N2O5(NO2Account for more than 90%), and with the SO in flue gas2Removed together in wet scrubber tower.Oxidizing process denitration is due to work
Skill is simple, and without using catalyst, Applicable temperature scope is wide, therefore has some superiority in use cost and applicability.Existing
Some SO2In NOx abjection devices, the device that desulfurization and denitration can be carried out simultaneously is seldom, even there is this function
Device, its eliminating efficiency is also very low, as environmental problem is increasingly serious, and more efficient desulfurization and the device of denitration are current rings
The primary study direction that border is administered.
Meanwhile, with developing rapidly for urban construction, the construction of new building, the dismounting of old building are brought
Substantial amounts of building waste.Building waste is solid, mainly based on common brick and the major class of hardened cement two, is directed in the prior art
The processing mode of common brick and hardened cement uses or prepared again construction material for filling after crushing again.Common brick and hardened cement
For porous material, with high porosity, stomata is intensive, average and stomata is perforate, therefore common brick and hardened cement also may be used
Using as filtering material or sorbing material, common brick and the but seldom application in the prior art of this characteristic of hardened cement.
Utility model content
The utility model is in order to which solve in the prior art can be while the unit efficiency for carrying out desulfurization and denitration be low, building rubbish
Common brick and hardened cement are difficult to the problem of thermal loss is big in recycle and combustion product gases in rubbish, it is proposed that one kind has cigarette
The desulfuring and denitrifying apparatus that the wet-dry change of gas heat recovery function is combined；
The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined, including dryer, condensation
Device, adsorption tower, denitrating tower, dry desulfurizing tower, device for generating power by waste heat, cyclone separator and wet desulfuration tower；
The dryer top is drying chamber, and bottom is exhaust gases passes, is heat transfer plate, cigarette between drying chamber and exhaust gases passes
It is provided with the left of gas passage on the right side of exhanst gas outlet, exhaust gases passes and is provided with gas approach；Drying chamber top is provided with humidity discharging mouthful；
The adsorption tower top is absorption material humidifying chamber, and middle part is flue gas adsorption chamber, and bottom is absorption material locker room, humidification
Room top is provided with spray head；
The dry desulfurizing tower is made up of several desulfurization units, is connected between adjacent desulfurization unit by flue,
Valve is provided with flue between adjacent desulfurization unit；Desulfurization unit be internally provided with vertical desulfurization unit every
Several desulfurizing agent agitators, adjacent desulfurizing agent agitator are provided with plate, the desulfurization unit inwall of desulfurization unit dividing plate both sides
Direction of rotation is opposite；The exhanst gas outlet of multiple desulfurization units is collected to a pipeline；
The drying chamber, adsorption chamber, denitrating tower, dry desulfurizing tower, device for generating power by waste heat, cyclone separator and wet desulphurization
Tower passes sequentially through pipeline connection；The drying chamber is connected with condenser by jet chimney, and condenser passes through with wet desulfuration tower
Aqueduct is connected, and slurries pipeline is provided between drying chamber and wet desulfuration tower；Pipe between the drying chamber and adsorption chamber
Road is a pipeline close to drying chamber side, and pipeline of the pipeline between drying chamber and adsorption chamber close to adsorption chamber side is many
Pipeline；Booster fan is provided with pipeline between the adsorption chamber and denitrating tower；The cyclone separator and wet desulfuration tower
Between pipeline on be provided with air-introduced machine；
The device for generating power by waste heat is existing apparatus, and device for generating power by waste heat includes waste heat boiler, steam turbine and generator；
The heat transfer plate is stainless steel plate；The denitrating tower is spray column；The denitrfying agent used in the denitrating tower is liquid
Ammonia, ammonia or urea；The wet desulfuration tower is spray column；The desulfurizing agent used in the wet desulfuration tower is lime；It is described
The desulfurizing agent used in dry desulfurizing tower is lime；Absorption material in the adsorption chamber is common brick particle or hardening in building waste
Cement granules；
Operation principle of the present utility model is：
The heat that the flue gas that burning is produced is initially entered in the exhaust gases passes in dryer, flue gas passes to baking through heat transfer plate
It is the slurries produced after wet desulfuration tower desulfurization in dry chamber, drying chamber, slurries can be dried in drying chamber, slurries drying course
The water produced after the condensed device processing of steam of middle generation is supplemented in wet desulfuration tower；Flue gas temperature after the heat exchange of drying machine
Reduction, the adsorption chamber that then flue gas enters in adsorption tower, in adsorption chamber the absorption material of filling be in building waste common brick particle or
Hardened cement particle, absorption material is porous material and absorption material can be adsorbed after humidifying chamber humidification process to flue gas, is passed through
Flue gas after adsorption tower processing, which enters, carries out denitration process in denitrating tower, then flue gas enters in dry desulfurizing tower and carried out for the first time
Desulfurization process, dry desulfurizing tower is made up of multiple desulfurization units interconnected, and desulfurization list can be controlled according to exhaust gas volumn
Flue gas after the unlatching quantity of member, dry desulfurization enters in device for generating power by waste heat, and device for generating power by waste heat turns the heat in flue gas
Turn to electric energy to power for the utility model device, flue gas temperature after device for generating power by waste heat is reduced, and then flue gas enters whirlwind
Gas-solid body separating treatment is carried out in separator, the flue gas after being handled through cyclone separator, which enters, carries out second inside wet desulfuration tower
Dust, SO after the completion of secondary desulfurization process, second of desulfurization process in flue gas2It is cleaned with NOx, the flue gas containing pollutant
Become clean flue gas to be discharged into air.
The utility model possesses following beneficial effect：
1st, the utility model device can carry out denitration process, a dry and wet and combine progress desulfurization process, possess
Splendid desulphurization denitration function, desulfurization degree and denitration rate are above the setting in national standard；
2nd, the utility model device is due to being provided with the absorption material of filling in adsorption tower, adsorption chamber for building waste in device
Middle common brick particle or hardened cement particle, absorption material is porous material and absorption material can be to flue gas after humidifying chamber humidification process
In flying dust, dust and SO2Adsorbed with NOx, most flying dust, dust are adsorbed in adsorption tower, it is possible to reduce cigarette
Gas reduces the pollution to desulfurizing agent, denitrfying agent, and then can reduce desulfurizing agent, denitration to desulfurization and the pollution of the equipment of denitration
Pipeline between the consumption of agent, wherein drying chamber and adsorption chamber is changed into many pipelines from one, can be evenly dispersed flue gas,
Adsorption effect is improved, common brick particle or hardened cement particle source are wide, cost is low and recovery utilization rate is low, and the utility model is also
Possesses the effect of comprehensive utilization of resources；
3rd, dry desulfurizing tower is provided with the desulfurization unit composition of several connections in the utility model device, can be according to flue gas
Amount is controlled the unlatching quantity of desulfurization unit, and desulfurization unit is internally provided with vertical desulfurization unit dividing plate, extends
The flow path of flue gas, improves the efficiency of dry desulfurization, desulfurizing agent is fully reacted with flue gas；
4th, reclaimed after the steam that adsorption tower is produced in the utility model device is handled by condenser and obtain water, obtained water can
To be delivered in wet method adsorption tower, the effect of saving water resource is realized；
5th, device for generating power by waste heat can generate electricity the heat recovery in flue gas in the utility model device, the fortune of feeding mechanism
OK, thus the utility model device operating cost reduction；
6th, flue gas contains higher moisture after adsorption tower, in flue gas in the utility model device, and flue gas is by inhaling
Enter after attached tower in denitrating tower, existing denitrating tower needs extra humidification device, and the utility model can reduce denitrating tower
Humidification process degree.
Brief description of the drawings
Fig. 1 is the utility model schematic device；
Fig. 2 is dryer schematic diagram in the utility model device；
Fig. 3 is adsorption tower schematic diagram in the utility model device；
Fig. 4 is dry desulfurizing tower schematic diagram in the utility model device；
Embodiment：
Technical solution of the present invention is not limited to act embodiment set forth below, in addition between each embodiment
Any reasonable combination.
Embodiment one：There is present embodiment flue gas heat to reclaim the desulphurization denitration that the wet-dry change of function is combined
Device, the device includes dryer 1, condenser 2, adsorption tower 3, denitrating tower 4, dry desulfurizing tower 5, device for generating power by waste heat 6, whirlwind
Separator 7 and wet desulfuration tower 8；
The top of dryer 1 be drying chamber 1-1, bottom be exhaust gases passes 1-2, drying chamber 1-1 and exhaust gases passes 1-2 it
Between be heat transfer plate 1-3, be provided with the left of exhaust gases passes 1-2 on the right side of exhanst gas outlet 1-4, exhaust gases passes 1-2 and be provided with gas approach
1-5；Drying chamber 1-1 tops are provided with humidity discharging mouthful 1-6；
The top of adsorption tower 3 is absorption material humidifying chamber 3-1, and middle part is flue gas adsorption chamber 3-2, and bottom is absorption material storage
Room 3-3, humidifying chamber 3-1 top are provided with spray head 3-4；
The dry desulfurizing tower 5 is made up of several desulfurization unit 5-1, and fume pipe is passed through between adjacent desulfurization unit 5-1
Road 5-2 is connected, and valve 5-3 is provided with the flue 5-2 between adjacent desulfurization unit 5-1；Set inside desulfurization unit 5-1
It is equipped with vertical desulfurization unit dividing plate 5-4, the desulfurization unit 5-1 inwalls of desulfurization unit dividing plate 5-4 both sides and is provided with several take off
Sulphur agent agitator 5-5, adjacent desulfurizing agent agitator 5-5 direction of rotation is opposite；Multiple desulfurization unit 5-1 exhanst gas outlet collects
To a pipeline；
The drying chamber 1-1, adsorption chamber 3-2, denitrating tower 4, dry desulfurizing tower 5, device for generating power by waste heat 6, cyclone separator 7
Pipeline connection is passed sequentially through with wet desulfuration tower 8；The drying chamber 1-1 is connected with condenser 2 by jet chimney, condenser 2
It is connected with wet desulfuration tower 8 by aqueduct, slurries pipeline 11 is provided between drying chamber 1-1 and wet desulfuration tower 8；It is described
Pipeline between drying chamber 1-1 and adsorption chamber 3-2 is a pipeline, drying chamber 1-1 and adsorption chamber 3- close to drying chamber 1-1 sides
Pipeline of the pipeline close to adsorption chamber 3-2 sides between 2 is many pipelines；Pipeline between the adsorption chamber 3-2 and denitrating tower 4
On be provided with booster fan 9；Air-introduced machine 10 is provided with pipeline between the cyclone separator 7 and wet desulfuration tower 8.
Present embodiment possesses following beneficial effect：
1st, present embodiment device can carry out denitration process, a dry and wet and combine progress desulfurization process, possess
Splendid desulphurization denitration function, desulfurization degree and denitration rate are above the setting in national standard；
2nd, present embodiment device is due to being provided with the absorption material of filling in adsorption tower, adsorption chamber for building waste in device
Middle common brick particle or hardened cement particle, absorption material is porous material and absorption material can be to flue gas after humidifying chamber humidification process
In flying dust, dust and SO2Adsorbed with NOx, most flying dust, dust are adsorbed in reduction adsorption tower, can be subtracted
Few flue gas to desulfurization and the pollution of the equipment of denitration, reduce pollution to desulfurizing agent, denitrfying agent, and then can reduce desulfurizing agent,
Pipeline between the consumption of denitrfying agent, wherein drying chamber and adsorption chamber is changed into many pipelines from one, flue gas can be made uniform
It is scattered, adsorption effect is improved, common brick particle or hardened cement particle source are wide, cost is low and recovery utilization rate is low, this implementation
Mode is also equipped with the effect of comprehensive utilization of resources；
3rd, dry desulfurizing tower is provided with the desulfurization unit composition of several connections in present embodiment device, can be according to flue gas
Amount is controlled the unlatching quantity of desulfurization unit, and desulfurization unit is internally provided with vertical desulfurization unit dividing plate, extends
The flow path of flue gas, improves the efficiency of dry desulfurization, desulfurizing agent is fully reacted with flue gas；
4th, reclaimed after the steam that adsorption tower is produced in present embodiment device is handled by condenser and obtain water, obtained water can
To be delivered in wet method adsorption tower, the effect of saving water resource is realized；
5th, device for generating power by waste heat can generate electricity the heat recovery in flue gas in present embodiment device, the fortune of feeding mechanism
OK, thus present embodiment device operating cost reduction；
6th, flue gas contains higher moisture after adsorption tower, in flue gas in present embodiment device, and flue gas is by inhaling
Enter after attached tower in denitrating tower, existing denitrating tower needs extra humidification device, and present embodiment can reduce denitrating tower
Humidification process degree.
Embodiment two：Present embodiment from unlike embodiment one：The heat transfer plate 1-3 is stainless
Steel plate.Other steps and parameter are identical with embodiment one.
Embodiment three：Present embodiment from unlike embodiment one or two：The denitrating tower 4 is spray
Drench tower.Other steps and parameter are identical with embodiment one or two.
Embodiment four：Unlike one of present embodiment and embodiment one to three：The denitrating tower 4
The middle denitrfying agent used is liquefied ammonia, ammonia or urea.Other steps and parameter are identical with one of embodiment one to three.
Embodiment five：Unlike one of present embodiment and embodiment one to four：The wet method takes off
Sulphur tower 8 is spray column.Other steps and parameter are identical with one of embodiment one to four.
Embodiment six：Unlike one of present embodiment and embodiment one to five：The wet method takes off
The desulfurizing agent used in sulphur tower 8 is lime.Other steps and parameter are identical with one of embodiment one to five.
Embodiment seven：Unlike one of present embodiment and embodiment one to six：The dry method takes off
The desulfurizing agent used in sulphur tower 5 is lime.Other steps and parameter are identical with one of embodiment one to six.
Embodiment eight：Unlike one of present embodiment and embodiment one to seven：The adsorption chamber
Absorption material in 3-2 is common brick particle or hardened cement particle in building waste.Other steps and parameter and embodiment
One of one to seven is identical.
Claims (8)
1. the desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined, it is characterised in that：The device
Including dryer (1), condenser (2), adsorption tower (3), denitrating tower (4), dry desulfurizing tower (5), device for generating power by waste heat (6), rotation
Wind separator (7) and wet desulfuration tower (8)；
Dryer (1) top is drying chamber (1-1), and bottom is exhaust gases passes (1-2), drying chamber (1-1) and exhaust gases passes
It is to be provided with the left of heat transfer plate (1-3), exhaust gases passes (1-2) on the right side of exhanst gas outlet (1-4), exhaust gases passes (1-2) between (1-2)
It is provided with gas approach (1-5)；Drying chamber (1-1) top is provided with humidity discharging mouthful (1-6)；
Adsorption tower (3) top is absorption material humidifying chamber (3-1), and middle part is flue gas adsorption chamber (3-2), and bottom is deposited for absorption material
Storage chamber (3-3), humidifying chamber (3-1) top is provided with spray head (3-4)；
The dry desulfurizing tower (5) is made up of several desulfurization units (5-1), and flue gas is passed through between adjacent desulfurization unit (5-1)
Pipeline (5-2) is connected, and valve (5-3) is provided with the flue (5-2) between adjacent desulfurization unit (5-1)；Desulfurization list
First (5-1) is internally provided with vertical desulfurization unit dividing plate (5-4), the desulfurization unit (5-1) of desulfurization unit dividing plate (5-4) both sides
Several desulfurizing agent agitators (5-5) are provided with inwall, adjacent desulfurizing agent agitator (5-5) direction of rotation is opposite；It is multiple de-
The exhanst gas outlet of sulphur unit (5-1) is collected to a pipeline；
The drying chamber (1-1), adsorption chamber (3-2), denitrating tower (4), dry desulfurizing tower (5), device for generating power by waste heat (6), whirlwind
Separator (7) and wet desulfuration tower (8) pass sequentially through pipeline connection；The drying chamber (1-1) passes through steam pipe with condenser (2)
Road is connected, and condenser (2) is connected with wet desulfuration tower (8) by aqueduct, drying chamber (1-1) and wet desulfuration tower (8) it
Between be provided with slurries pipeline (11)；Pipeline between the drying chamber (1-1) and adsorption chamber (3-2) is close to drying chamber (1-1) one
Side is a pipeline, and pipeline of the pipeline close to adsorption chamber (3-2) side between drying chamber (1-1) and adsorption chamber (3-2) is many
Root pipeline；Booster fan (9) is provided with pipeline between the adsorption chamber (3-2) and denitrating tower (4)；The cyclone separator
(7) it is provided with air-introduced machine (10) on the pipeline between wet desulfuration tower (8).
2. the desulphurization denitration dress that a kind of wet-dry change for reclaiming function with flue gas heat according to claim 1 is combined
Put, it is characterised in that：The heat transfer plate (1-3) is stainless steel plate.
3. the desulphurization denitration dress that a kind of wet-dry change for reclaiming function with flue gas heat according to claim 1 is combined
Put, it is characterised in that：The denitrating tower (4) is spray column.
4. the desulphurization denitration dress that a kind of wet-dry change for reclaiming function with flue gas heat according to claim 1 is combined
Put, it is characterised in that：The denitrfying agent used in the denitrating tower (4) is liquefied ammonia, ammonia or urea.
5. the desulphurization denitration dress that a kind of wet-dry change for reclaiming function with flue gas heat according to claim 1 is combined
Put, it is characterised in that：The wet desulfuration tower (8) is spray column.
6. the desulphurization denitration dress that a kind of wet-dry change for reclaiming function with flue gas heat according to claim 1 is combined
Put, it is characterised in that：The desulfurizing agent used in the wet desulfuration tower (8) is lime.
7. the desulphurization denitration dress that a kind of wet-dry change for reclaiming function with flue gas heat according to claim 1 is combined
Put, it is characterised in that：The desulfurizing agent used in the dry desulfurizing tower (5) is lime.
8. the desulphurization denitration dress that a kind of wet-dry change for reclaiming function with flue gas heat according to claim 1 is combined
Put, it is characterised in that：Absorption material in the adsorption chamber (3-2) is common brick particle or hardened cement particle in building waste.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621233539.2U CN206372687U (en) | 2016-11-17 | 2016-11-17 | The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621233539.2U CN206372687U (en) | 2016-11-17 | 2016-11-17 | The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined |
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|---|---|
| CN206372687U true CN206372687U (en) | 2017-08-04 |
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| CN201621233539.2U Expired - Fee Related CN206372687U (en) | 2016-11-17 | 2016-11-17 | The desulfuring and denitrifying apparatus that a kind of wet-dry change for reclaiming function with flue gas heat is combined |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525505A (en) * | 2018-06-25 | 2018-09-14 | 禹州市灵威水泥熟料有限公司 | A kind of cement clean manufacturing efficient combination desulfurization technology |
| CN110756004A (en) * | 2019-10-30 | 2020-02-07 | 中国石油化工股份有限公司 | Combined process for deeply purifying hydrogen sulfide and organic sulfur |
| CN110947290A (en) * | 2019-12-06 | 2020-04-03 | 付顺坤 | Two medium block plasma SOx/NOx control devices |
| CN115634522A (en) * | 2022-10-20 | 2023-01-24 | 云南曲靖钢铁集团呈钢钢铁有限公司 | Environment-friendly energy-saving type deep purification system and method for flue gas of belt type sintering machine |
-
2016
- 2016-11-17 CN CN201621233539.2U patent/CN206372687U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108525505A (en) * | 2018-06-25 | 2018-09-14 | 禹州市灵威水泥熟料有限公司 | A kind of cement clean manufacturing efficient combination desulfurization technology |
| CN110756004A (en) * | 2019-10-30 | 2020-02-07 | 中国石油化工股份有限公司 | Combined process for deeply purifying hydrogen sulfide and organic sulfur |
| CN110947290A (en) * | 2019-12-06 | 2020-04-03 | 付顺坤 | Two medium block plasma SOx/NOx control devices |
| CN115634522A (en) * | 2022-10-20 | 2023-01-24 | 云南曲靖钢铁集团呈钢钢铁有限公司 | Environment-friendly energy-saving type deep purification system and method for flue gas of belt type sintering machine |
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