CN105664633B - For purifying the Integral electric bag complex dust collector and dust removal method of coal-fired flue-gas - Google Patents
For purifying the Integral electric bag complex dust collector and dust removal method of coal-fired flue-gas Download PDFInfo
- Publication number
- CN105664633B CN105664633B CN201610086339.7A CN201610086339A CN105664633B CN 105664633 B CN105664633 B CN 105664633B CN 201610086339 A CN201610086339 A CN 201610086339A CN 105664633 B CN105664633 B CN 105664633B
- Authority
- CN
- China
- Prior art keywords
- flue gas
- gas
- heat exchanger
- air inlet
- bag filter
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrostatic Separation (AREA)
- Chimneys And Flues (AREA)
- Treating Waste Gases (AREA)
Abstract
The present invention provides a kind of Integral electric bag complex dust collector and dust removal method for being used to purify coal-fired flue-gas, the complex dust collector includes electric precipitator, bag filter and pipe heat exchanger, electric precipitator one end is connected with bag filter, the other end is connected with air inlet section, and heat exchanger is installed in air inlet section.The complex dust collector saves space；Dust and SO that can be in cooperation-removal flue gas3, efficiency of dust collection is effectively improved, dust emission concentration is less than 10mg/m3, SO3Removal efficiency is about 70%；Heat transferring medium in pipe heat exchanger, without influence, can make the flue gas of discharge reach minimum discharge standard and reduce corrosion or progress waste heat recovery of the wet flue gas to chimney on smoke components；It is and good to the adaptability of different types of coal；Solve the problems, such as low temperature electric precipitator to grey sulphur than selectivity, inverse corona, reentrainment of dust and PM2.5 arresting efficiencies it is low etc..
Description
Technical field
The invention belongs to pollutant purification technical field, and it is compound to be related to a kind of Integral electric bag for being used to purify coal-fired flue-gas
Deduster and dust removal method.
Background technology
Electrostatic precipitation technology is ineffective for the thinner dust catching of high specific resistance, particle diameter, and researcher and engineers exist
Electric precipitator front end installs low temperature or low cryogenic heat exchanger additional, and flue-gas temperature is reduced, can reduce flue gas volume, makes one in flue gas
Part SO3Condense and adsorb on dust surface, achieve the purpose that to reduce dust specific resistance, simultaneously because flue gas volume reduces, powder
Dust concentration raise, since particle coalescence is more easy to occur caused by collision, fine particle can coalescence be removed for bulky grain.Its
In, low low temperature electrostatic dedusting technology has engineering should in companies such as Japan's applicating history nearly 20 years existing, Mitsubishi Heavy Industries Ltd, Hitachis
With control flue-gas temperature is reduced to 90 DEG C or so, can stable operation.But since coal difference is larger, flue gas sulfur-bearing and other acid
Property gas concentration it is higher, low temperature electric precipitator be applied to Coal Combustion in China boiler after, occur heavy corrosion, and flue gas volume reduce
After dust concentration rises, the problems such as inverse corona and reentrainment of dust, is even more serious than in tradition electric precipitator, and fine particle is taken off
Except effect almost without.Therefore, low temperature electrostatic precipitation technology of the flue-gas temperature control more than dew point is more suitable for China, but it is low
Warm electrostatic precipitation technology is difficult to reach " minimum discharge " standard.
CN 103363536A disclose a kind of system with low-low temperature ESP, and low cryogenic heat exchanger is separately pacified with electric precipitator
Dress, does not refer to SO3Condensed deduster etching problem.
CN 104484578A disclose a kind of low temperature electric precipitator and the united smoke processing systems of water-borne formula GGH and
Flue gas processing method, low cryogenic heat exchanger are installed separately with electric precipitator, and temperature is adjusted by water-borne formula GGH, ensure chimney row
The flue-gas temperature gone out, avoids producing white cigarette, but the flue gas entered inside electric precipitator is still below dew-point temperature, it is necessary to dust quality
Concentration and SO3Otherwise the ratio between mass concentration (grey sulphur ratio) is difficult to avoid that the corrosion of electric precipitator, this puies forward coal more than 100
Requirement is gone out, has not in addition mentioned the system and can reach minimum discharge standard.
CN 203935906U disclose a kind of low temperature electric precipitator, install cryogenic heat exchanger and electric precipitator, feature respectively
It is heat exchange fin of the heat exchanger tube surface layout parallel to flow of flue gas direction of cryogenic heat exchanger.But can deduster be reached
Minimum discharge standard does not explain.
CN 204543908U disclose a kind of electric-bag complex dust collector with cooling treatment, and bag is compound removes for cooler and electricity
Dirt device is installed respectively, is sprayed cooling medium by atomizer in cooler, is reduced flue-gas temperature, and collects a part of lime-ash,
Remaining dust traps in electric-bag complex dust collector.But cooling medium is sprayed by nozzle, is easily carried secretly by flue gas, into follow-up dirt
Contaminate in thing control device.
The content of the invention
In view of the deficiencies of the prior art, the present invention intends to provide a kind of entirety for being used to purify coal-fired flue-gas
Pipe heat exchanger and electric-bag complex dust collector are carried out integration cloth by formula electric-bag complex dust collector and dust removal method, the deduster
Put, save installation space, reduce input gas temperature and exhaust gas volumn, SO3Partial condensation is adsorbed on dust surface；In pipe type heat transfer
Medium is on smoke components without influence；It can realize waste heat recovery and flue dust minimum discharge standard, and to different types of coal
Adaptability is good.
For this purpose, the present invention uses following technical scheme：
It is an object of the present invention to provide a kind of Integral electric bag complex dust collector for being used to purify coal-fired flue-gas, bag
Electric precipitator, bag filter and heat exchanger are included, described electric precipitator one end is connected with bag filter, and the other end is with being used for
The air inlet section of pending flue gas air inlet is connected, and the heat exchanger is installed in air inlet section, and the heat exchanger is pipe heat exchanger.
The electric precipitator is arranged in series with bag filter.
Preferably, the lower part of the electric precipitator and bag filter sets ash bucket respectively, and the top of bag filter is set
It is equipped with purification gas discharge chamber.
The pipe heat exchanger is low temperature pipe heat exchanger.
Preferably, one group of low temperature pipe heat exchanger is at least set in the air inlet section.
Preferably, the heat exchanger tube in the pipe heat exchanger is horizontal and/or vertical arrangement is in air inlet section.
Preferably, the material of the pipe heat exchanger is wear resistant corrosion resistant metal material.
Preferably, the heat transferring medium of the pipe heat exchanger is flue gas after desulfurization, wet electrical dust precipitator exiting flue gas or solidifying
Bear water.
The air inlet section is provided with gas inlet, and gas inlet is connected with flue, is removed from gas inlet to air inlet section and electricity
The contact position of dirt device, the cross-sectional area of the air inlet section gradually increase.
The air inlet section is connected by airflow-distribution board with electric precipitator.
The second object of the present invention is to provide a kind of method for carrying out fume treatment using deduster as described above, described
Method is：By pending flue gas heat exchange, its temperature is set to be higher than 5-10 DEG C of flue gas dew point temperature；Afterwards, by the flue gas after heat exchange according to
Secondary progress electric precipitation and bag-type dust, are purified flue gas.
The flue gas is coal-fired flue-gas, wherein, SO3Content is 10-80mg/m3。
The flue gas heat exchange is carried out using low temperature pipe heat exchanger.
Preferably, the low temperature pipe heat exchanger is at least one group.
Preferably, the low temperature pipe heat exchanger is arranged in the air inlet section for pending flue gas air inlet.
Preferably, the horizontal and/or vertical arrangement in air inlet section of the heat exchanger tube in the low temperature pipe heat exchanger.
Preferably, the material of the low temperature pipe heat exchanger is wear resistant corrosion resistant metal material.
Preferably, the flue gas exchanges heat with flue gas after desulfurization, wet electrical dust precipitator exiting flue gas or condensation water.
Electric precipitation and bag-type dust, the electric precipitator and bag filter are carried out using electric precipitator and bag filter
Series connection.
Preferably, flow velocity of the pending flue gas in electric precipitator is 0.8-1m/s, residence time 1-3s.
Preferably, filtration velocity of the flue gas on bag filter filter bag surface is 0.8-2m/min, in bag-type dust
Residence time inside device is 4-10s.
As preferable technical solution, the method for the processing flue gas includes the following steps：
(1)SO3Content is 10-80mg/m3Coal-fired flue-gas exchange heat through at least one set of low temperature pipe heat exchanger, obtain temperature
Flue gas of 5-10 DEG C higher than flue gas dew point temperature；
(2) temperature is carried out higher than 5-10 DEG C of flue gas dew point temperature, the flue gas that flow velocity is 0.8-1m/s in electric precipitator
Dedusting, residence time of the flue gas in electric precipitator are 1-3s；
(3) flue gas after electric precipitation carries out further dedusting in bag filter, and flue gas is in bag filter filter bag
The filtration velocity on surface is 0.8-2m/min, and the residence time inside bag filter is 4-10s, the cigarette after being purified
Gas.
Compared with prior art, beneficial effects of the present invention are：
Integral electric bag complex dust collector provided by the invention carries out pipe heat exchanger and electric-bag complex dust collector overall
Change arrangement, save the space of separately installed cryogenic heat exchanger；Reduce input gas temperature and exhaust gas volumn, SO3Partial condensation is adsorbed
On dust surface, dust and SO that can be in cooperation-removal flue gas3, effectively improve efficiency of dust collection, SO3Removal efficiency is up to 70%；
Heat transferring medium in pipe heat exchanger is on smoke components without influence, and can making the flue gas of discharge, (dust emission concentration is less than 10mg/
m3) reach minimum discharge standard, and corrosion and progress waste heat recovery of the wet flue gas to chimney can be reduced, and different types of coal are fitted
Answering property is good；Solve low temperature electric precipitator to grey sulphur than selectivity, inverse corona, reentrainment of dust and PM2.5Arresting efficiency is low etc.
Problem.
Brief description of the drawings
Fig. 1 is the structure diagram for the Integral electric bag complex dust collector that embodiment 1 provides；
Fig. 2 is the cryogenic heat exchanger mounting means figure for the Integral electric bag complex dust collector that embodiment 1 provides.
Wherein：1- air inlet sections；2- low temperature pipe heat exchangers；3- airflow-distribution boards；4- electric precipitators；5- bag filters；
6- ash buckets；7- heat exchanger tubes.
Embodiment
Further illustrate technical scheme below with reference to the accompanying drawings and specific embodiments.But following reality
Example is only the simple example of the present invention, does not represent or limit the scope of the present invention, protection scope of the present invention
It is subject to claims.
A kind of Integral electric bag complex dust collector, including electric precipitator 4, bag filter 5 and heat exchanger, the electric precipitation
4 one end of device is connected with bag filter 5, and the other end is connected with the air inlet section 1 for pending flue gas air inlet, the heat exchange
Device is installed in air inlet section 1, and the heat exchanger is pipe heat exchanger.
The Integral electric bag complex dust collector is particularly suitable for SO3Content is 10-80mg/m3Coal-fired flue-gas.The pipe
Flue-gas temperature can be reduced to 5-10 DEG C of the flue gas dew point temperature above by formula heat exchanger.The temperature is enabled in flue gas
SO3Condensation adsorption is on soot dust granule surface, so as to avoid flue-gas temperature from being reduced to the sulfuric acid produced below dew point to electric precipitator 4
Corrosion, and achieve the purpose that flue dust and at the same time removing.
Pipe heat exchanger is arranged in air inlet section 1 by the Integral electric bag complex dust collector, has saved installation heat exchanger
Space, reduce input gas temperature and exhaust gas volumn so that the SO in flue gas3Partial condensation absorption is on dust surface, by rear
Continuous electric precipitator 4 and bag filter 5 can be by flue gases and SO3Remove at the same time, avoid SO3Corrosion to electric precipitator 4；
Be arranged in the bag filter 5 after electric precipitator 4, solve low temperature electric precipitator 4 to grey sulphur than selectivity, inverse corona, two
The problems such as secondary airborne dust and PM2.5 arresting efficiency is low；The selection of pipe heat exchanger then avoids the direct of flue gas and heat transferring medium
Contact, the heat transferring medium in pipe heat exchanger, without influence, can realize waste heat recovery and minimum discharge to smoke components
Standard, and it is good to the adaptability of different types of coal.
The electric precipitator 4 is arranged in series with bag filter 5.Flue gas traps bulky grain thing by electric precipitator 4, then
Bag filter 5 is directly entered to discharge after deep purifying.
Preferably, the lower part of the electric precipitator 4 and bag filter 5 sets ash bucket 6 respectively, bag filter 5 it is upper
Portion is provided with purification gas discharge chamber.The ash bucket 6 is used to discharge the dust produced in dust removal process, and purified flue gas leads to
Cross the discharge of purification gas discharge chamber.
The pipe heat exchanger is low temperature pipe heat exchanger 2.
Preferably, one group of low temperature pipe heat exchanger 2,2 energy of low temperature pipe heat exchanger are at least set in the air inlet section 1
Enough flue-gas temperatures for being gradually lowered into electric precipitator.In actual use, those skilled in the art can according to boiler characteristics and
Coal used determines the installation number and heat exchange area of low temperature pipe heat exchanger 2.
Preferably, the heat exchanger tube 7 in the pipe heat exchanger is horizontal and/or vertical arrangement is in air inlet section 1, such as Fig. 2 institutes
Show, the length of air inlet section 1 is directly proportional to heat exchanger group number.
Preferably, the material of the pipe heat exchanger is wear resistant corrosion resistant metal material.
Preferably, the heat transferring medium of the pipe heat exchanger is flue gas after desulfurization, wet electrical dust precipitator exiting flue gas or solidifying
Bear water.Using the heat transferring medium to achieve the purpose that waste utilization.
The air inlet section 1 is provided with gas inlet, and gas inlet is connected with flue, from gas inlet to air inlet section 1 and electric
The contact position of deduster 4, the cross-sectional area of the air inlet section 1 gradually increase.So that flue gas enters electric precipitator 4.
The air inlet section 1 is connected by airflow-distribution board 3 with electric precipitator 4, so that flue gas is evenly into electric precipitator
4。
A kind of method that fume treatment is carried out using deduster as described above, the method are：By pending flue gas heat exchange,
Its temperature is set to be higher than 5-10 DEG C of flue gas dew point temperature；Afterwards, the flue gas after heat exchange is subjected to electric precipitation and bag-type dust successively, obtained
To purifying smoke.
The pending flue gas is coal-fired flue-gas, wherein, SO3Content is 10-80mg/m3, such as 12mg/m3、15mg/m3、
18mg/m3、20mg/m3、23mg/m3、25mg/m3、30mg/m3、35mg/m3、40mg/m3、50mg/m3、60mg/m3、70mg/m3
Or 75mg/m3Deng.
The purifying smoke can reach minimum discharge standard.
Pending flue-gas temperature is reduced to the SO higher than 5-10 DEG C of flue gas dew point temperature, be conducive in flue gas3Condensation is inhaled
Soot dust granule surface is attached to, so as to avoid the corrosion to electric precipitator 4, and is conducive to flue dust and SO3Remove at the same time.
The flue gas heat exchange is carried out using low temperature pipe heat exchanger 2.Pipe heat exchanger can avoid heat transferring medium and flue gas
Directly contact, heat transferring medium is on the component of flue gas without influence, therefore the method is to the adaptable of flue gas.
Preferably, the low temperature pipe heat exchanger 2 is at least one group.Those skilled in the art can be according to actual flue gas temperature
In degree and flue gas into 2 groups of numbers of the suitable low temperature pipe heat exchanger of component selections and area.
Preferably, the low temperature pipe heat exchanger 2 is arranged in the air inlet section 1 for pending flue gas air inlet.
Preferably, the horizontal and/or vertical arrangement in air inlet section 1 of the heat exchanger tube 7 in the low temperature pipe heat exchanger 2.
Preferably, the material of the low temperature pipe heat exchanger 2 is wear resistant corrosion resistant metal material.
Preferably, the flue gas exchanges heat with flue gas after desulfurization, wet electrical dust precipitator flue gas or condensation water.Using as above
The purpose that the heat transferring medium can reach and improve flue-gas temperature, reduces boiler flue corrosion and waste heat recovery.
Electric precipitation is carried out using electric precipitator 4 and bag filter 5 and bag-type dust, the electric precipitator 4 and cloth bag remove
Dirt device 5 is connected.Electric precipitator 4 can trap the bulky grain thing in flue gas, and subsequent bag filter 5 again discharges electric precipitator 4
Flue gas discharged after deep purifying, the flue gas after being purified.Carry out electric precipitation successively and bag-type dust solves low temperature
Electric precipitator 4 to grey sulphur than selectivity, inverse corona, reentrainment of dust and PM2.5The problems such as arresting efficiency is low.
Preferably, flow velocity of the pending flue gas in electric precipitator 4 is 0.8-1m/s, as 0.82m/s, 0.85m/s,
0.88m/s, 0.90m/s, 0.92m/s, 0.95m/s or 0.98m/s etc., such as residence time 1-3s, 2s.
Preferably, filtration velocity of the flue gas on 5 filter bag surface of bag filter is 0.8-2m/min, such as 0.9m/
Min, 1.0m/min, 1.2m/min, 1.5m/min, 1.6m/min or 1.8m/min etc., during stop inside bag filter
Between be 4-10s, such as 5s, 6s, 7s, 8s or 9s.
As preferable technical solution, the method for the processing flue gas includes the following steps：
(1)SO3Content is 10-80mg/m3Coal-fired flue-gas exchange heat through at least one set of low temperature pipe heat exchanger 2, obtain temperature
Flue gas of 5-10 DEG C higher than flue gas dew point temperature；
(2) temperature is carried out higher than 5-10 DEG C of flue gas dew point temperature, the flue gas that flow velocity is 0.8-1m/s in electric precipitator 4
Dedusting, residence time of the flue gas in electric precipitator 4 are 1-3s；
(3) flue gas after electric precipitation carries out further dedusting in bag filter 5, and flue gas is filtered in bag filter 5
The filtration velocity on bag surface is 0.8-2m/min, and the residence time inside bag filter 5 is 4-10s, after being purified
Flue gas.
Embodiment 1
A kind of Integral electric bag complex dust collector is as shown in Figure 1, the Integral electric bag complex dust collector includes air inlet section
1st, two groups of low temperature pipe heat exchangers 2, airflow-distribution board 3, electric precipitator 4 and bag filter 5.The electric precipitator 4 and cloth bag
Deduster 5 is arranged in series, and the air inlet section 1 is connected with electric precipitator 4 by airflow-distribution board 3, two groups of low temperature pipe heat exchangers 2
It is installed in parallel in air inlet section 1.The lower part of the electric precipitator 4 and bag filter 5 sets ash bucket 6, bag filter 5 respectively
Top be provided with purification gas discharge chamber.7 vertical arrangement of heat exchanger tube of low temperature pipe heat exchanger 2 is in air inlet section 1, such as Fig. 2
It is shown.The material of low temperature pipe heat exchanger 2 is wear resistant corrosion resistant metal material.Air inlet section 1 is provided with gas inlet, gas inlet
It is connected with flue, it is gradual with the contact position of electric precipitator 4, the cross-sectional area of the air inlet section 1 from gas inlet to air inlet section 1
Increase, is expanding.Gas inlet and air inlet section 1 and the shape of 4 contact position of electric precipitator can be quadrangle.
Dust and SO are removed using the deduster3Technique be：About 150 DEG C of temperature, SO3Content about 35mg/m3, dust
Concentration is about 20g/m3Flue gas enter air inlet section 1, pass through the two-stage low temperature pipe heat exchanger 2 with heat transferring medium for condensation water
Contact heat-exchanging, is reduced to 105-110 DEG C, SO by flue-gas temperature3Condense about 70wt%；Make again by the airflow-distribution board 3
Flue gas is even into the electric precipitator 4, the total particulate of collection 85% or so；The bag filter 5 is finally entered,
Remaining particulate matter is removed, dust emission is less than 10mg/m3, SO3Removal efficiency is about 70%.
Embodiment 2
Coal-fired flue-gas, the temperature of the coal-fired flue-gas are purified using the Integral electric bag complex dust collector described in embodiment 1
About 145 DEG C, SO3Content about 10mg/m3, dust concentration be about 10g/m3。
Purification process is：Coal-fired flue-gas enters air inlet section 1, by being changed with heat transferring medium for the three-level low temperature tubular type of condensation water
The contact heat-exchanging of hot device 2, is reduced to 105-110 DEG C, SO by flue-gas temperature3Condense about 68wt%；Make again by airflow-distribution board 3
For flue gas even into the electric precipitator 4, flow velocity of the flue gas in electric precipitator 4 is 0.8m/s, residence time 3s, is collected
82% or so total particulate；Bag filter 5 is finally entered, filtration velocity of the flue gas on 5 filter bag surface of bag filter is
0.8m/min, the residence time inside bag filter 5 is 10s, removes remaining particulate matter, can finally make dust emission low
In 10mg/m3, SO3Removal efficiency is about 69%.
Embodiment 3
Coal-fired flue-gas, the temperature of the coal-fired flue-gas are purified using the Integral electric bag complex dust collector described in embodiment 1
About 140 DEG C, SO3Content about 80mg/m3, dust concentration be about 60g/m3。
Purification process is：Coal-fired flue-gas enters air inlet section 1, by being changed with heat transferring medium for the three-level low temperature tubular type of condensation water
The contact heat-exchanging of hot device 2, is reduced to 105-110 DEG C, SO by flue-gas temperature3Condense about 69wt%；Make again by airflow-distribution board 3
For flue gas even into the electric precipitator 4, flow velocity of the flue gas in electric precipitator 4 is 1m/s, residence time 1s, is collected
84% or so total particulate；Bag filter 5 is finally entered, filtration velocity of the flue gas on 5 filter bag surface of bag filter is
2m/min, the residence time inside bag filter 5 is 4s, removes remaining particulate matter, can finally be less than dust emission
10mg/m3, SO3Removal efficiency is about 68%.
Embodiment 4
Coal-fired flue-gas, the temperature of the coal-fired flue-gas are purified using the Integral electric bag complex dust collector described in embodiment 1
About 135 DEG C, SO3Content about 50mg/m3, dust concentration be about 40g/m3。
Purification process is：Coal-fired flue-gas enters air inlet section 1, by being changed with heat transferring medium for the level-one low temperature tubular type of condensation water
The contact heat-exchanging of hot device 2, is reduced to 105-110 DEG C, SO by flue-gas temperature3Condense about 69wt%；Make again by airflow-distribution board 3
For flue gas even into the electric precipitator 4, flow velocity of the flue gas in electric precipitator 4 is 0.9m/s, residence time 2s, is collected
85% or so total particulate；Bag filter 5 is finally entered, filtration velocity of the flue gas on 5 filter bag surface of bag filter is
1m/min, the residence time inside bag filter 5 is 6s, removes remaining particulate matter, can finally be less than dust emission
10mg/m3, SO3Removal efficiency is about 67%.
Applicant states, the foregoing is merely the embodiment of the present invention, but protection scope of the present invention not office
It is limited to this, person of ordinary skill in the field is it will be clearly understood that any belong to those skilled in the art and taken off in the present invention
In the technical scope of dew, the change or replacement that can readily occur in are all fallen within protection scope of the present invention and the open scope.
Claims (11)
- A kind of 1. method that fume treatment is carried out using Integral electric bag complex dust collector, it is characterised in that the method is：Will Pending flue gas heat exchange, the pending flue gas are coal-fired flue-gas, wherein, SO3Content is 10-80mg/m3；Using low temperature tubular type Heat exchanger (2) carries out flue gas heat exchange, its temperature is higher than 5-10 DEG C of flue gas dew point temperature；Afterwards, by the flue gas after heat exchange successively Electric precipitation and bag-type dust are carried out, is purified flue gas；The deduster includes electric precipitator (4), bag filter (5) and low temperature pipe heat exchanger (2), the electric precipitator (4) one end is connected with bag filter (5), and the other end is connected with the air inlet section (1) for pending flue gas air inlet, described Low temperature pipe heat exchanger (2) is installed in air inlet section (1).
- 2. the according to the method described in claim 1, it is characterized in that, lower part of the electric precipitator (4) and bag filter (5) Ash bucket (6) is set respectively, and the top of bag filter (5) is provided with purification gas discharge chamber.
- 3. according to the method described in claim 1, it is characterized in that, the air inlet section (1) is provided with gas inlet, gas inlet Be connected with flue, from gas inlet to air inlet section (1) with the contact position of electric precipitator (4), the cross section of the air inlet section (1) Product gradually increase.
- 4. according to the method described in claim 1, it is characterized in that, the air inlet section (1) is removed by airflow-distribution board (3) with electricity Dirt device (4) connects.
- 5. according to the method described in claim 1, it is characterized in that, the low temperature pipe heat exchanger (2) is at least one group.
- 6. according to the method described in claim 1, it is characterized in that, the heat exchanger tube (7) in the low temperature pipe heat exchanger (2) exists Horizontal and/or vertical arrangement in air inlet section (1).
- 7. according to the method described in claim 1, it is characterized in that, the material of the low temperature pipe heat exchanger (2) is wear-resisting resistance to Corrode metal material.
- 8. according to the method described in claim 1, it is characterized in that, the pending flue gas is removed with flue gas after desulfurization, wet type electricity Dirt device exiting flue gas or condensation water exchange heat.
- 9. according to the method described in claim 1, it is characterized in that, flow velocity of the pending flue gas in electric precipitator (4) For 0.8-1m/s, residence time 1-3s.
- 10. according to the method described in claim 1, it is characterized in that, the pending flue gas is in bag filter (5) filter bag table The filtration velocity in face is 0.8-2m/min, and the residence time inside bag filter is 4-10s.
- 11. according to the method described in one of claim 1-10, it is characterised in that described method includes following steps：（1）SO3Content is 10-80mg/m3Coal-fired flue-gas exchange heat through at least one set of low temperature pipe heat exchanger (2), obtain temperature height In 5-10 DEG C of flue gas of flue gas dew point temperature；（2）Temperature is removed higher than 5-10 DEG C of flue gas dew point temperature, the flue gas that flow velocity is 0.8-1m/s in electric precipitator (4) Dirt, residence time of the flue gas in electric precipitator (4) are 1-3s；（3）Flue gas after electric precipitation carries out further dedusting in bag filter (5), and flue gas is filtered in bag filter (5) The filtration velocity on bag surface is 0.8-2m/min, is 4-10s in bag filter (5) the internal residence time, after being purified Flue gas.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610086339.7A CN105664633B (en) | 2016-02-15 | 2016-02-15 | For purifying the Integral electric bag complex dust collector and dust removal method of coal-fired flue-gas |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610086339.7A CN105664633B (en) | 2016-02-15 | 2016-02-15 | For purifying the Integral electric bag complex dust collector and dust removal method of coal-fired flue-gas |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105664633A CN105664633A (en) | 2016-06-15 |
| CN105664633B true CN105664633B (en) | 2018-04-13 |
Family
ID=56304496
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610086339.7A Active CN105664633B (en) | 2016-02-15 | 2016-02-15 | For purifying the Integral electric bag complex dust collector and dust removal method of coal-fired flue-gas |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105664633B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051028A (en) * | 2017-04-17 | 2017-08-18 | 济南大学 | A kind of outer flue gas ash collecting device of flue |
| CN107029512A (en) * | 2017-05-11 | 2017-08-11 | 洛阳千百度窑炉科技有限公司 | The smoke and dust eliminating method and equipment of white cigarette gas |
| CN107413159A (en) * | 2017-09-22 | 2017-12-01 | 华北电力大学 | A kind of electrostatic fabric filter for integrating energy-saving desulfuration dedusting |
| CN111013348A (en) * | 2019-12-23 | 2020-04-17 | 西安西矿环保科技有限公司 | Dust and nitrate integrated system and method suitable for multi-dust section in cement kiln |
| CN112337649B (en) * | 2020-11-16 | 2021-12-07 | 浙江大学 | Dust removal device and method for removing normal alkane in flue gas |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2004080574A1 (en) * | 2003-03-12 | 2004-09-23 | F.L. Smidth Airtech A/S | Mercury and process for removing mercury from gases |
| CN202398250U (en) * | 2011-12-08 | 2012-08-29 | 青海宜化化工有限责任公司 | Integrated treatment system for tail gas of calcium carbide furnace |
| CN202860353U (en) * | 2012-10-16 | 2013-04-10 | 北京博电兴源节能科技有限公司 | Efficient dust collector |
| CN103363536A (en) * | 2013-07-10 | 2013-10-23 | 浙江省电力设计院 | Low temperature electric precipitation system in fuel electric plant |
| CN203935906U (en) * | 2014-05-29 | 2014-11-12 | 凯天环保科技股份有限公司 | A kind of low temp. electric deduster |
| CN104307298A (en) * | 2014-11-11 | 2015-01-28 | 中国科学院过程工程研究所 | Transverse collecting plate deflector type electric bag composite fine particle efficient catcher and catching method |
| CN205495243U (en) * | 2016-02-15 | 2016-08-24 | 中国科学院过程工程研究所 | A integral electrostatic fabric filter for purifying coal -fired flue gas |
-
2016
- 2016-02-15 CN CN201610086339.7A patent/CN105664633B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN105664633A (en) | 2016-06-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105664633B (en) | For purifying the Integral electric bag complex dust collector and dust removal method of coal-fired flue-gas | |
| CN104226479B (en) | The high-efficient wet-type electric precipitation purifier and method of a kind of wet-method desulfurized fume | |
| CN103480223B (en) | Wet-type fume purification system and purification method for high smoke speed PM2.5 and pollutant | |
| CN105457407A (en) | Double-filtration exhaust gas purification equipment | |
| CN202666644U (en) | Water-saving and low-energy-consumption flue gas dry-wet compound dedusting and desulfurizing system | |
| CN111569601B (en) | Flue gas dust removal and adsorption desulfurization integrated device | |
| CN104857799A (en) | Sulfur and dust removal device | |
| CN105457396A (en) | Flue gas purification device for environmental protection | |
| CN208372652U (en) | Integral type oil fume purifier | |
| CN104548826A (en) | Flue gas ultra-clean wet dust collection system of power plant | |
| CN205495243U (en) | A integral electrostatic fabric filter for purifying coal -fired flue gas | |
| CN213492812U (en) | Flue gas treatment system | |
| CN105457408A (en) | Flue gas purification device | |
| CN110860177B (en) | Flue gas purification device and flue gas purification method | |
| CN2728625Y (en) | Electrostatic, filtering bag combined dust separator | |
| CN102580417A (en) | High-temperature smoke bag type dust remover of submerged arc furnace, dust removing process and dust removing system | |
| CN204395698U (en) | The ultra-clean Wet-way dust-collector of a kind of power-plant flue gas | |
| CN105169910B (en) | Furnace flue gas dedusting and pernicious gas synergistic purification device | |
| CN205392024U (en) | Horizontal membrane wet dedusting device of high -efficient condensation | |
| CN105709554A (en) | Flue gas deep purification system adopting phase-change coagulation and charged processing integration | |
| CN103480228A (en) | Smoke dust cooling and collecting device and method capable of reducing PM (particulate matter) 2.5 discharged by coal-fired power plant | |
| CN105709555A (en) | Embedded type flue gas deep purification system adopting phase-change coagulation | |
| CN112295353A (en) | Trichlorosilane gas wet dust collector | |
| CN210356494U (en) | Tail-end dust removal and whitening system for flue gas | |
| CN102225309B (en) | De-dusting device and de-dusting method for coal-fired flue gas by using two-stage bar water films |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |