CN202191838U - Flue gas disposing device of coal-fired industrial boiler - Google Patents

Flue gas disposing device of coal-fired industrial boiler Download PDF

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Publication number
CN202191838U
CN202191838U CN2011203196059U CN201120319605U CN202191838U CN 202191838 U CN202191838 U CN 202191838U CN 2011203196059 U CN2011203196059 U CN 2011203196059U CN 201120319605 U CN201120319605 U CN 201120319605U CN 202191838 U CN202191838 U CN 202191838U
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China
Prior art keywords
flue gas
coal
reactor
industrial boiler
wet electrostatic
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Expired - Lifetime
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CN2011203196059U
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Inventor
吴祖良
张岳平
孙培德
施啸奇
谢德援
彭宇成
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ZHEJIANG FUCHUNJIANG ENVIRONMENTAL PROTECTION THERMOELECTRICITY CO Ltd
Zhejiang Gongshang University
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ZHEJIANG FUCHUNJIANG ENVIRONMENTAL PROTECTION THERMOELECTRICITY CO Ltd
Zhejiang Gongshang University
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Priority to CN2011203196059U priority Critical patent/CN202191838U/en
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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 flue gas disposing device of a coal-fired industrial boiler, which includes a Venturi spray reactor, a wet electrostatic reactor, a high voltage power source, an absorbent circulating pool, an induced draft fan and a chimney, wherein a diffusion pipe of the Venturi spray reactor is connected with an air inlet of the wet electrostatic reactor; an air outlet of the wet electrostatic reactor is sequentially connected with the induced draft fan and the chimney; a water outlet is connected with the absorbent circulating pool; and the absorbent circulating pool is connected with an absorbent cabin. The flue gas disposing device of the coal-fired industrial boiler can simultaneously remove multiple pollutants such as dust, SO2 and NOx in the flue gas, has high pollutant removing efficiency, simple and reliable technology, and can greatly reduce investment and operation costs.

Description

A kind of coal-burned industrial boiler flue gas processing device
Technical field
The utility model relates to a kind of flue gas processing device, relates in particular to a kind of venturi compound wet electrostatic of spraying that utilizes, and is used for the device of the multiple pollutant removing of coal-burned industrial boiler flue gas.
Background technology
China is an Industrial Boiler production and uses big country, and according to statistics, China in 2008 is with more than 50 ten thousand of Industrial Boilers, and quantity is big, distribute extensively, and wherein more than 80% coal-burning boiler.At present, China's coal-burned industrial boiler has following characteristics: (1) separate unit boiler average size is little, and boiler overall energy consumption level is high, and the energy-saving and emission-reduction managerial skills are low, and energy waste and environmental pollution are serious.(2) the steam coal kind is changeable, ature of coal is poor, burn deterioration, and combustion system is backward, is main with grate firing boiler, and efficiency of combustion is lower, and pollutant emission intensity is high.(3) boiler chimney is short, exhaust gas temperature is high, pollution is big.(4) active boiler has a large capacity and a wide range, and layout is quite disperseed, and it is big that pollution control reduces discharging difficulty.As the important energy conversion equipment; Nearly 500,000,000 tons of year total coal consumption of present China coal-burned industrial boiler; Accounting for 1/5 of national consumption of coal total amount, is the second largest energy consumption equipment except that electricity generation boiler, is one of the lavish consumer of China's energy and main source of atmospheric pollution.2010, about 1,000 ten thousand tons of the coal fire discharged sulfur dioxide of industrial boilers in China, about 2,000,000 tons of oxynitrides, about 1,000,000 tons of dust, about 9,000 ten thousand tons of waste residue is the second largest coal-smoke pollution source that China is only second to coal fired power generation.Therefore, greatly developing comprehensive control of multiple pollutant in the coal-burned industrial boiler flue gas is the key link that realizes that atmosphere pollution reduces discharging significantly, and this has just proposed very urgent requirement to exploitation of coal-burned industrial boiler smoke pollution control technology and application.
But because the relatively poor and existing smoke pollution control technology of economic strength of China general industry enterprise is comparatively backward, most of coal-burned industrial boiler dust-removal and desulfurizing equipment are still relatively backward, some in addition do not have dust-removing desulfurating apparatus, little denitrification apparatus.At present, domestic coal-burned industrial boiler smoke pollution is administered and is mainly concentrated on dedusting, and the matching used cleaner overwhelming majority is cyclone dust collectors, but the not normally operation of 50% cyclone dust collectors is just progressively eliminated.Tracing it to its cause mainly is that cyclone dust collectors are prone to stop up, and is prone to leak out, and makes efficiency of dust collection significantly descend; China begins to research and develop the flue gas desulfurization technique of coal-burned industrial boiler the beginning of the nineties, at present can the fume desulphurization method nearly 10 of stable operation surplus kind, but really come into the market just several kinds, and investment and operating cost are relatively more expensive, apply comparatively difficulty.The technical problem that some are thorny,, burn into fouling low like operational efficiency, obstruction, secondary pollution, carbonated drink are separated and Ash Water Separator etc. does not obtain fine solution yet, and the development of coal-burned industrial boiler flue gas desulfurization is had difficulty in taking a step; And for the denitrating flue gas of coal-burned industrial boiler, at present domestic still belong to blank.
The control of traditional coal-fired flue-gas pollutant is that a kind of pollutant takes a cover flue gas to remove the control mode of device, when needs are controlled multiple pollutant simultaneously, certainly will cause problems such as system complex, floor space are big, cost height.According to the market demand current and control of coal-burned industrial boiler smoke pollution from now on development; The multiple pollutant of research and development new high-efficiency removes technology simultaneously and realizes the industrialization demonstration; Progressively applying, is coal-burned industrial boiler smoke pollution control technology development priority and trend in following one period.
In recent years, integrated to remove Study on Technology comparatively active to the multiple pollutant of fire coal in developed countries such as the U.S., Japan, and the some of them technology has been in early stage commercialization stage.At present, study in the more flue gas multiple pollutant and remove technology simultaneously oxidation absorption techniques (like plasma method, photocatalytic method, hydrogen peroxide oxidation absorption techniques) is arranged, reduction technique (like urea desulphurization denitration technology simultaneously) and wet type complexed absorption technology etc.But these technology all also are not very ripe, mostly are in demonstration phase, and the heavy industrialization of being unrealized is used.Though the integrated control technology research of coal-fired flue-gas pollutant has obtained preliminary progress, need time from industrial applications, need key technical problems such as resolution system design, technology controlling and process, technology be integrated.
Summary of the invention
The purpose of the utility model provide a kind of utilize venturi spray compound wet electrostatic, can remove dust, SO in the coal-burned industrial boiler flue gas simultaneously 2With the device of multiple pollutant such as NOx, investment is big in the prior art, operational efficiency is low to solve, apply problem such as difficulty.
A kind of coal-burned industrial boiler flue gas processing device comprises venturi spray reactor, wet electrostatic reactor, high voltage source, absorbent circulatory pool, air-introduced machine, chimney and absorbent storehouse,
Described venturi spray reactor comprises collapsible tube, trunnion and anemostat, and a plurality of absorbent nozzles, 4 of preferred arrangements are evenly arranged in described trunnion porch around trunnion.The length of described trunnion is preferably 1~1.2 times of throat pipe diameter.The angle of throat of described collapsible tube is preferably 25~30 °, and the angle of flare of described anemostat is preferably 6~8 °.Described venturi spray reactor preferably adopts horizontal arrangement.
Described wet electrostatic reactor comprises housing, and described housing top is provided with the gas outlet, and lower housing portion is provided with air inlet.Described enclosure interior is formed by a plurality of cell discharge combination of channels.Cell discharge passage top, be higher than the position, gas outlet and be provided with insulation board, the insulation board top is provided with insulator, with insulation board with insulator and flue gas isolation.The bottom of described housing is provided with ash bucket and delivery port.Described delivery port is connected with the absorbent circulatory pool.Described wet electrostatic reactor preferably adopts vertical layout.
Include discharge plate and sparking electrode in each cell discharge passage, described sparking electrode is located at the discharge channel center, and described discharge plate promptly constitutes the discharge cell conduit wall.Described discharge plate ground connection, sparking electrode connects the negative high voltage of high voltage source.
As a kind of preferred version, described discharge plate is a stainless-steel sheet, and the discharge plate top is provided with sparge pipe.Described sparge pipe material is PPR, and diameter is 6~8mm, and every separated 100mm offers water jet under the sparge pipe, and water jet is higher than discharge plate 10mm.Described sparking electrode is a stainless steel tube, and the diameter of stainless steel tube is 6~8mm, stainless steel pipe surface winding screw line, spiral pitch 25mm, helix diameter 2~3mm.
Described cell discharge passage be preferably the length of side be 300~400mm the square or diameter be the circle of 300~400mm.The cross-sectional area of wet electrostatic reactor can confirm that the flue gas flow rate in the unit channel generally is controlled at 0.2~0.4m/s according to the flue gas flow rate in handled exhaust gas volumn and the unit channel.
As a kind of preferred, the air inlet top of wet electrostatic reactor can be provided with the airflow uniform distribution plate of porous.
The anemostat of said venturi sprayer is connected with the air inlet of wet electrostatic reactor, and the gas outlet of wet electrostatic reactor is connected with air-introduced machine, chimney successively.
Described absorbent circulatory pool is connected with the absorbent nozzle of venturi sprayer, and described absorbent circulatory pool is connected with the absorbent storehouse.
Pending coal-burned industrial boiler flue gas gets into the venturi spray reactor from boiler; Flow velocity increases gradually behind collapsible tube; Form swiftly flowing gas, get into along the equally distributed absorbent nozzle of trunnion periphery from the absorbent of absorbent circulatory pool, the absorbent drop at trunnion by at a high speed flue gas stream atomizing with quicken; There is inertial collision between absorbent drop and the dust granules, realizes the preliminary reunion of dust; In anemostat, air velocity reduce the rise with pressure, making with the dust granules is that the cohesion of the nuclei of condensation speeds up, and forms the bigger dust-laden drop of diameter, goes far towards to capture to remove.Owing to the minimizing of flue gas flow rate, the time of staying increases, SO simultaneously 2And the absorption reaction between the drop will be further strengthened SO 2Removal efficiency further improve.Behind the flue gas process venturi sprayer, big drop flows into the ash bucket of wet electrostatic reactor bottom under the gravitational settling effect.And tiny dust-laden drop during through the cell discharge passage by negative electrical charge on the lotus, under the effect of electric field force,, captured by discharge plate at last to the discharge plate motion.The drop that captures in the discharge process flows into ash bucket along discharge plate from top to bottom, compiles discharge at delivery port at last, flows into the absorbent circulatory pool and carries out water seal.Simultaneously, SO 2Mass transfer absorption reaction at wet electrostatic reactor and drop is still carrying out, and the dust in the drop has catalysed oxidn to inferior sulfate radical, can further improve SO 2Assimilation effect.In addition, corona discharge process can produce more oxidative free radical OH, HO under high humility 2Or the like, the NO in can the oxidation flue gas becomes NO 2, HNO 2And HNO 3, and the dust in the drop has catalysed oxidn, can promote these oxidation materials to be absorbed by drop, finally realizes the effective elimination of NOx.Dust, SO have so just been realized 2And remove NOx the time.
In the venturi spray reactor; Trunnion place flow of flue gas is the atomized liquid absorbent effectively; The effect of atomizing then depends on the flow of flue gas speed at trunnion place; The big more atomizing effect of velocity of flue gas is good more, but resistance also increases simultaneously, thus from the described trunnion flow of flue gas of practical application consideration speed generally at 90~110m/s.In addition, in order to obtain dust catching and SO efficiently 2Assimilation effect, the straying quatity of absorbent is most important, according to the traditional wet flue gas desulfurization technique, the absorbent straying quatity described in the utility model is that liquid-gas ratio is controlled at 8~15L/m 3
At the wet electrostatic reactor; The cross-sectional area of reactor can be confirmed according to handled exhaust gas volumn and flue gas flow rate; Drop captures effect in order to obtain preferably; Compare with traditional dry type static dust, need to reduce the flue gas flow rate of wet electrostatic reactor, so the flue gas flow rate described in the utility model is controlled at 0.2~0.4m/s.In the utility model because in the venturi spray reactor, injected more liquid-absorbant,, helped SO so in the wet electrostatic reactor, can form one deck thin liquid film on the discharge plate 2, NOx absorption, simultaneously this can be avoided the appearance of problems such as the dust back-mixing in the dry type static dust, anti-corona, improves removing of fine particulates.Because the long-time running dust granules can be bonded on the discharge plate, influences corona discharge,, regularly clean to the pole plate water spray so above discharge plate, arrange sparge pipe.Cleaning way adopts big flow to be interrupted water spray and cleans, and injection flow rate is 3~4kg/ (m 3.h), pressure of supply water is 0.2~0.3MPa.
Discharge plate in the wet electrostatic reactor shell adopts square or circular configuration, and compact conformation is easy to process, and reactor amplifies the different boiler capacity of adaptation easily; Sparking electrode in the wet electrostatic reactor shell adopts the stainless steel tube of winding screw line; This be because: because discharge space humidity is bigger, easy flashing discharge during discharge, guiding discharge voltage is whole to descend; Remove fog effect thereby reduce, so be not suitable for adopting conventional prickle shape electrode.The sparking electrode of spiral line type is difficult for puncturing, and can improve discharge voltage, thereby improves the capture effect of drop.Discharge plate and sparking electrode are owing to operation under the state of dewfall, in order to prevent SO 2With the corrosivity of NOx, guarantee stable operation, so the material of discharge plate and sparking electrode is stainless steel.
The utility model device uses complex technique to realize multiple pollutant dust, SO in the fire coal boiler fume 2Remove in the time of with NOx, save gas cleaning investment and operating cost greatly, simple and reliable process; And the removal efficiency of flue gas pollutant is high, and wherein the removal efficiency of dust reaches more than 99 %, SO 2Removal efficiency can reach more than 95%, and the removal efficiency of NOx also can reach about 50%, adapts to the development trend of filed of flue gas purification.
Description of drawings
Fig. 1 is the process flow diagram that adopts the utility model device.
Fig. 2 is the structural representation of venturi sprayer and wet electrostatic reactor in the utility model device.
Fig. 3 is cell discharge passage and the layout drawing of the sparge pipe on the discharge plate in the wet electrostatic reactor.
Fig. 4 is the structural representation of the wet electrostatic reactor helical discharge electrode in the utility model device.
Each description of reference numerals among the figure:
1-boiler 2-venturi spray reactor 3-wet electrostatic reactor 4-high voltage source
5-absorbent circulatory pool 6-air-introduced machine 7-chimney 8-absorbent storehouse
9-collapsible tube 10-trunnion 11-anemostat 12-housing
13-air inlet 14-gas outlet 15-discharge plate 16-sparking electrode
17-sparge pipe 18-ash bucket 19-airflow uniform distribution plate 20-delivery port
21-insulator 22-insulation board 23-discharge channel 24-helix
The specific embodiment
Coal-burned industrial boiler flue gas processing device as shown in Figure 1 comprises venturi spray reactor 2, wet electrostatic reactor 3, high voltage source 4, absorbent circulatory pool 5, air-introduced machine 6, chimney 7 and absorbent storehouse 8.Venturi spray reactor 2, wet electrostatic reactor 3, air-introduced machine 6 and chimney 7 are connected successively, and high voltage source 4 is connected with wet electrostatic reactor 3, and absorbent circulatory pool 5 is connected through pipeline with the bottom of wet electrostatic reactor 3.
The described venturi compound wet electrostatic reactor of spraying is as shown in Figure 2, comprises the venturi spray reactor 2 and vertically arranged wet electrostatic reactor 3 of horizontal arrangement.Described venturi spray reactor 2 is made up of collapsible tube 9, trunnion 10 and anemostat 11.The angle of throat of collapsible tube 9 is 25~30 °.Flue gas flow rate in the trunnion 10 is controlled at 90~110m/s, and trunnion 10 length are 1~1.2 times throat pipe diameter, and 4 nozzles are evenly arranged along periphery in trunnion 10 porch.The angle of flare of anemostat 11 is 6~8 °.
Described wet electrostatic reactor 3 comprises housing 12, and housing 12 bottoms are provided with air inlet 13, and air inlet 13 is connected with the anemostat 11 of venturi sprayer, and the length of linkage section is more than 2m.Housing top is provided with gas outlet 14, and gas outlet 14 is connected with air-introduced machine 6, chimney 7 successively.Air inlet 13 tops are provided with porous airflow uniform distribution plate 19 simultaneously, and percent opening is 30~50%.
As shown in Figure 3, housing 12 inside are combined by a plurality of cell discharge passages 23, can amplify according to the size of exhaust gas volumn and the requirement of pollutant removing.Cell discharge passage 23 is a square or circular, and the square length of side or circular diameter are 300~400mm.Flue gas flow rate in the cell discharge passage 23 is controlled at 0.2~0.4m/s.Cell discharge passage 23 is made up of discharge plate 15 and sparking electrode 16, and sparking electrode 16 is located at the center of discharge channel, and discharge plate 15 promptly constitutes the cell discharge conduit wall.Discharge plate 15 ground connection, sparking electrode 16 connects the negative high voltage of high voltage source, forms negative corona.Insulator 21 is arranged in the top of wet electrostatic reactor 3 and adopts insulation board 22 and outlet flue gas to isolate.The drop that captures in the corona discharge process flows along discharge plate 15 from top to bottom, flows into the ash bucket 18 of wet electrostatic reactor 3, compiles at delivery port 20 at last, flows into absorbent circulatory pool 5 and carries out water seal.
Discharge plate 15 tops are provided with sparge pipe 17, and sparge pipe 17 is regularly sprayed water, and clean pole plate.Sparge pipe is arranged as shown in Figure 3.Sparge pipe 17 materials are PPR, and diameter is 6~8mm.Every separated 100mm offers water jet under the sparge pipe 17, and than discharge plate 15 high 10mm.Because the long-time running dust granules can be bonded on the discharge plate,, regularly clean to the pole plate water spray so above discharge plate, arrange sparge pipe.Cleaning way adopts big flow to be interrupted water spray and cleans, and injection flow rate is 3~4kg/ (m 3.h), pressure of supply water is 0.2~0.3MPa.
As shown in Figure 4, sparking electrode 16 is a stainless steel tube, and the stainless steel tube diameter is 6~8mm.Stainless steel pipe surface winding screw line 24, helix 24 spacing 25mm, helix 24 diameters 2~3mm.Because discharge space humidity is bigger, adopt the sparking electrode of spiral line type, be difficult for during discharge puncturing, can improve discharge voltage, thereby improve the capture effect of drop.
The delivery port of described wet electrostatic reactor 3 (20) is connected to absorbent circulatory pool 5, and described absorbent circulatory pool 5 is through absorbent storehouse 8 regular replenishment absorbents.
The flue gas that comes out from boiler 1 at first advances venturi spray reactor 2; Flue gas is raised flow velocity in the collapsible tube 9 of venturi sprayer 2; Swiftly flowing flue gas atomizes the absorbent that sprays into, quicken at trunnion 10; Flue gas with atomizing after absorbent droplet collision reaction after, realize the preliminary sedimentation and the SO of dust 2Tentatively remove.Flue gas gets into wet electrostatic reactor 3 through the anemostat 11 of venturi sprayer 2 afterwards, and big drop flows into the ash bucket 18 of wet electrostatic reactor 3 bottoms under the gravitational settling effect.Discharge plate 15 ground connection, sparking electrode 16 connects negative high voltage.Tiny dust-laden drop during through discharge channel 23 by negative electrical charge on the lotus; Under the effect of electric field force, move to discharge plate 15; Captured by discharge plate 15 at last, flow into ash buckets 18 along discharge plate 15 from top to bottom, compile at delivery port 20 at last and be expelled to absorbent circulatory pool 5.Absorbent storehouse 8 regularly replenishes absorbent to absorbent circulatory pool 5.Simultaneously, SO 2Still carrying out at wet electrostatic reactor 3 mass transfer absorption reaction, and the dust in the drop has catalysed oxidn to inferior sulfate radical, can further improve SO with drop 2Assimilation effect.In addition, corona discharge process can produce more oxidative free radical OH, HO under high humility 2Or the like, the NO in can the oxidation flue gas becomes NO 2, HNO 2And HNO 3, and the dust in the drop has catalysed oxidn, can promote these oxidation materials to be absorbed by drop, realizes NO xRemove.At last,, discharge from chimney 7 at last through air-introduced machine 6 through flue gas after being purified.
Application examples 1
Adopt removal methods as shown in Figure 1, the flue gas flow rate control 100m/s in the trunnion, flue gas flow rate is 0.3m/s in the wet electrostatic channel of reactor.Handle 3000m 3The coal-burned industrial boiler flue gas of/h as absorbent, applies the high direct voltage of 55kV with NaOH alkali lye, through environmental administration's monitoring, efficiency of dust collection 99.15%, desulfuration efficiency 96.91%, denitration efficiency 47.57%.

Claims (10)

1. coal-burned industrial boiler flue gas processing device comprises venturi spray reactor (2), wet electrostatic reactor (3), high voltage source (4), absorbent circulatory pool (5), air-introduced machine (6), chimney (7) and absorbent storehouse (8), it is characterized in that:
Described venturi spray reactor (2) comprises collapsible tube (9), trunnion (10) and anemostat (11), and the porch of described trunnion (10) is provided with the absorbent nozzle along the periphery of trunnion (10);
Described wet electrostatic reactor (3) comprises housing (12), and the upper and lower of described housing (12) is respectively equipped with gas outlet (14) and air inlet (13); The inside of described housing (12) is provided with some cell discharge passages (23), and described cell discharge passage (23) top is provided with insulation board (22), and described insulation board (22) top is provided with insulator (21); The bottom of described housing (12) is provided with ash bucket (18) and delivery port (20);
The anemostat (11) of described venturi spray reactor (2) is connected with the air inlet (13) of wet electrostatic reactor (3); The gas outlet (14) of described wet electrostatic reactor (3) is connected with air-introduced machine (6), chimney (7) successively, and described delivery port (20) is connected with absorbent circulatory pool (5).
2. coal-burned industrial boiler flue gas processing device as claimed in claim 1 is characterized in that: the top of the air inlet (13) of described wet electrostatic reactor (3) is provided with porous airflow uniform distribution plate (19).
3. coal-burned industrial boiler flue gas processing device as claimed in claim 1; It is characterized in that: described cell discharge passage (23) comprises discharge plate (15) and sparking electrode (16); Described sparking electrode (16) is located at the center of cell discharge passage (23), and described discharge plate (15) constitutes the cell discharge conduit wall; Described discharge plate (15) ground connection, described sparking electrode (16) connects the negative high voltage of high voltage source (4).
4. coal-burned industrial boiler flue gas processing device as claimed in claim 1 is characterized in that: described venturi spray reactor (2) horizontal arrangement, described wet electrostatic reactor (3) is vertical to be arranged.
5. coal-burned industrial boiler flue gas processing device as claimed in claim 1 is characterized in that: described absorbent nozzle has 4.
6. coal-burned industrial boiler flue gas processing device as claimed in claim 1 is characterized in that: the length of described trunnion (10) is 1~1.2 times of trunnion (10) diameter.
7. coal-burned industrial boiler flue gas processing device as claimed in claim 1 is characterized in that: the angle of throat of described collapsible tube (9) is 25~30 °.
8. coal-burned industrial boiler flue gas processing device as claimed in claim 1 is characterized in that: the angle of flare of described anemostat (11) is 6~8 °.
9. coal-burned industrial boiler flue gas processing device as claimed in claim 1 is characterized in that: described cell discharge passage (23) is the square of 300~400mm or the circle of diameter 300~400mm for the length of side.
10. coal-burned industrial boiler flue gas processing device as claimed in claim 3 is characterized in that: described discharge plate (15) is a stainless-steel sheet, and discharge plate (15) top is furnished with sparge pipe (17); Described sparking electrode (16) is a stainless steel tube, and the stainless steel tube diameter is 6~8mm; Stainless steel pipe surface winding screw line (24), helix (24) spacing 25mm, helix (24) diameter 2~3mm.
CN2011203196059U 2011-08-29 2011-08-29 Flue gas disposing device of coal-fired industrial boiler Expired - Lifetime CN202191838U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104759192A (en) * 2015-03-17 2015-07-08 浙江大学 Low-cost coal-fired flue gas various pollutant ultralow emission system and low-cost coal-fired flue gas various pollutant ultralow emission method
CN105854501A (en) * 2016-04-28 2016-08-17 安徽工业大学 Emission reduction system for fine particles in sintering process of iron ore
CN111822146A (en) * 2019-04-15 2020-10-27 中国科学院过程工程研究所 Pre-charging electric appliance

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104759192A (en) * 2015-03-17 2015-07-08 浙江大学 Low-cost coal-fired flue gas various pollutant ultralow emission system and low-cost coal-fired flue gas various pollutant ultralow emission method
CN105854501A (en) * 2016-04-28 2016-08-17 安徽工业大学 Emission reduction system for fine particles in sintering process of iron ore
CN105854501B (en) * 2016-04-28 2018-02-02 安徽工业大学 A kind of emission-reducing system of Ore Sintering Process fine particle
CN111822146A (en) * 2019-04-15 2020-10-27 中国科学院过程工程研究所 Pre-charging electric appliance

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Granted publication date: 20120418