CN108325358A - A kind of gas cleaning absorption tower and its processing method and purposes - Google Patents
A kind of gas cleaning absorption tower and its processing method and purposes Download PDFInfo
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- CN108325358A CN108325358A CN201810159419.XA CN201810159419A CN108325358A CN 108325358 A CN108325358 A CN 108325358A CN 201810159419 A CN201810159419 A CN 201810159419A CN 108325358 A CN108325358 A CN 108325358A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/60—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
- B01D53/04—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8637—Simultaneously removing sulfur oxides and nitrogen oxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20707—Titanium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2255/00—Catalysts
- B01D2255/20—Metals or compounds thereof
- B01D2255/207—Transition metals
- B01D2255/20723—Vanadium
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
The present invention provides a kind of gas cleaning absorption tower and its processing method and purposes, the absorption tower includes tower body, air inlet, gas outlet, spray ammonia component and support plate；Wherein, the lower part in tower body side is arranged in the air inlet, the gas outlet is arranged on the top of tower body, the air inlet and the setting of gas outlet homonymy and/or heteropleural, longitudinal subdivision inside tower body is the first adjacent flue area, adsorption zone and the second flue area by the support plate, the air inlet is connected with the first flue area, and the spray ammonia component is arranged in the first flue area and/or the second flue area.Absorption tower of the present invention can change the internal structure on absorption tower according to the flow behavior of flue gas, to change the type of flow of the flue gas in adsorption tower, ensure that flue gas has the rational residence time in absorbent interior, improve adaptability of the absorption tower to smoke components, it realizes that the high-efficient purification of flue gas absorbs, reaches the emission of industrial pollutants standard of national regulation.
Description
Technical field
The invention belongs to flue gases purification field, it is related to a kind of gas cleaning absorption tower and its processing method and purposes.
Background technology
With the rapid development of industry, influence of the waste discharged during the production run of high pollution enterprise to environment is got over
Come more apparent, country pays more attention to environmental protection, therefore its requirement is also increasingly stringenter.The main component of flue gas is in environmental pollution
Mainly there is SO2、NOX, dust and heavy metal etc., their contents in an atmosphere want living environment considerably beyond the mankind
It asks, therefore flue gas treating process includes mainly dedusting and desulphurization denitration.
In recent years, industrial smoke discharge standard is gradually increased in China, some are ripe for set of flue gas purifying technique
And realize application, some are still in the research and development test stage.Although various pollution control means start in corresponding enterprise in recent years
It plays a role, but application range is relatively narrow, the effect is unsatisfactory, and environmental protection research and development are still shouldered heavy responsibilities, and research and design personnel are
It is attempted by the smoke gas treatment technology or Importing Foreign Advanced Technology of using for reference other industry.
Existing more mature gas cleaning absorption tower can be divided into two major classes, be respectively integral type desulphurization denitration absorption tower and
Two-part desulphurization denitration absorption tower.Wherein, two-part desulphurization denitration tower can preferably be kept away in the low nitrogen flue gas of purified treatment high-sulfur
Exempt from presence harmful effect caused by desulphurization denitration of sulphur, therefore is suitably applied steel sintering, pelletizing flue gas desulfurization and denitrification work
In skill；And the high nitrogen low-sulfur characteristic of coke oven flue gas makes it be more suitably applied to integral type desulphurization denitration tower, however the presence of sulphur is still
Larger negative effect can be brought to the denitration ability of direct integral type desulphurization denitration tower.Flue gas characteristic is in addition to nitrogenous sulfur-bearing dust-laden
Outside, it is also possible to which, containing components such as hydrogen sulfide, tar, heavy metal and VOCs, different industries and operation conditions cause smoke components
Complicated and changeable, the fluctuation of changes of contents range is big, and above is all the factor to be taken in when smoke absorption tower structure designs.
106693603 A of CN disclose a kind of activated carbon method smoke eliminator, and described device includes activated carbon adsorption
Tower, flue gas are passed in and out from tower body homonymy, and bottom inflow, top outlet, centre is active carbon bed, and active-carbon bed layer segment includes
Activated carbon channel is arranged in 3 parts (upper and lower part and intermediate transition zone), intermediate transition zone, activated carbon chamber up and down is connected to, in
Between top and the bottom are divided by roll-type dispenser, realize that flue gas passes twice through active carbon layer, complete the desulphurization denitration of flue gas, but
The device internal structure is complicated, it is difficult to ensure operational process stability, while the clean-up effect of flue gas is directly by inside reactor
The influence of structure.
107185404 A of CN disclose a kind of gas cleaning absorption tower, including are vertically provided inside absorption tower
Two porous barriers will absorb tower section and be divided into the firstth adjacent area, the secondth area and third area；Cigarette is set in firstth area
The upper and lower part of qi leel partition board, tower body is respectively equipped with gas outlet and air inlet, and gas baffle is posted on the first porous barrier, the
Activated carbon is filled in 2nd area, and ammonia-spraying grid is arranged in third area, by the way that flue gas demarcation strip and gas baffle is arranged, improves the suction of flue gas
Purification efficiency is echoed, but adsorption tower internal structure setting is more single, is unable to adjust, it is weaker to the adaptability of flue gas, to very
The handling result of the flue gas of multicomponent complexity is unsatisfactory.
Therefore, design that structure is more perfect, the smoke eliminator more adaptable to flue gas is urgently to study people
Member solves the problems, such as.
Invention content
In view of the problems of the existing technology, the purpose of the present invention is to provide a kind of gas cleaning absorption tower and its processing
Method and purposes.The internal structure on absorption tower of the present invention can be adjusted according to the characteristic of flue gas, and absorption is improved with this
Tower realizes the high-efficient purification of variety classes flue gas to the adaptability of flue gas, keeps technological design and industrial production more efficiently convenient.
For this purpose, the present invention uses following technical scheme：
In a first aspect, the present invention provides a kind of gas cleaning absorption tower, the absorption tower includes tower body, air inlet, goes out
Gas port, spray ammonia component and support plate；Wherein, the air inlet is arranged in the lower part of tower body side, and the gas outlet is arranged in tower
The top of body, the air inlet and gas outlet homonymy and/or heteropleural setting, the support plate include the first support plate and second
Longitudinal subdivision inside tower body is the first adjacent flue area, adsorption zone and the second flue area, the air inlet and first by fagging
Flue area is connected, and the spray ammonia component is arranged in the first flue area and/or the second flue area, filling absorption in the adsorption zone
Agent.
In the present invention, the internal structure on the absorption tower can be adjusted, and the wherein setting of air inlet and gas outlet can root
It is selected according to smoke property and processing target, according to the setting of smoke entrance, the position of the type and spray ammonia component of support plate
Setting also can accordingly change, and to improve flow condition of the flue gas inside tower body, improve the effect that gas cleaning absorbs.
In the present invention, adsorbent enters from the top on absorption tower, is filled into adsorption zone, adsorbent layer is constituted, with cigarette
The processing of gas, adsorbent can be inactivated gradually, need constantly to be updated, using the gravity of adsorbent itself, adsorbent is with certain
Rate slowly left from the bottom on absorption tower, rate travel by flue gas treating capacity and adsorbent addition synthesis determine
It is fixed.
In the present invention, the narration that air inlet is connected with the first flue area is intended merely to the connection relation preferably to adsorption tower
It is described, is not limited to the position of air inlet, because the first flue area, which also only facilitates, distinguishes adsorption tower internal structure
And title, be not the limitation to its position.
It is used as currently preferred technical solution below, but not as the limitation of technical solution provided by the invention, passes through
Following technical scheme can preferably reach and realize the technical purpose and advantageous effect of the present invention.
As currently preferred technical solution, the spray ammonia component is ammonia-spraying grid；
Preferably, first support plate and the second support plate are arranged in parallel.
Preferably, first support plate and the second support plate are porous plate.
Preferably, the percent opening of first support plate and the second support plate stand alone as 30%~50%, such as 30%,
32%, 35%, 38%, 40%, 42%, 45%, 48% or 50% etc., it is not limited to cited numerical value, the numerical value model
Other unrequited numerical value are equally applicable in enclosing, and preferably 35%~45%.
In the present invention, under the premise of ensuring support plate intensity and not excessive adsorbent, the percent opening of support plate should use up can
Can be big, while percent opening distribution can be adjusted according to the result of computer simulation flue gas flow field uniformity, it is intensive in airflow field
Region suitably reduces percent opening so that flue gas more flows to the larger region of resistance, and it is whole to increase inside reactor flow field with this
The uniformity of body improves purification assimilation effect.
Preferably, second support plate is non-multi orifice plate.
Preferably, the adsorbent includes any one in activated carbon, activated coke or vanadium titanium bulk catalyst or at least two
The combination of kind, the combination is typical but non-limiting examples have：The combination of activated carbon and activated coke, activated coke and vanadium titanium main body are urged
The combination of agent, the combination etc. of activated carbon, activated coke and vanadium titanium bulk catalyst.
Preferably, the shape of the adsorbent is graininess and/or cylindric.
In the present invention, the shape of different types of adsorbent can be different, the shape of same kind of difference adsorbent individual
Shape can also be different.
It is described when absorption tower includes being set to the gas outlet of homonymy with air inlet as currently preferred technical solution
Absorption tower further includes baffle, and the baffle plate setting is in the first flue area.
In the present invention, according to the difference of air inlet and gas outlet relative position, homonymy is set to especially in the presence of with air inlet
Gas outlet when, in order to change the circulating pathway of flue gas, prevent flue gas from directly being left from gas outlet without adsorption zone, in adsorption tower
Baffle can be also set to improve the clean-up effect of flue gas.
Preferably, the baffle includes horizontal baffle and vertical baffle, and the horizontal baffle is arranged in air inlet top, institute
Vertical baffle is stated along the first support plate to be arranged, the side of the horizontal baffle is connected with the lower edge of vertical baffle, the other side with
Tower body inner wall is connected.
In the present invention, baffle plate setting is dismountable, can be installed in tower body by components such as card slots, according to practical prison
It surveys flue gas characteristic parameter and changes tower body internal structure, the type of flow of the adjusting flue gas in adsorbent layer in real time.
Preferably, the horizontal baffle at a distance from air inlet bottom be 1m~5m, such as 1m, 1.5m, 2m, 2.5m, 3m,
3.5m, 4m, 4.5m or 5m etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are same
It is applicable in, preferably 2m~4m.
In the present invention, the height of air inlet is determined by pending exhaust gas volumn, ensures to enter in adsorption tower adsorbent layer
In 0.4m/s hereinafter, flow velocity is too fast, flue gas cannot mix the flow velocity of flue gas well with the ammonia that spray ammonia component sprays when portion,
Adsorbent can be caused to impact, influence the adsorption effect of adsorbent.
Preferably, the height of the vertical baffle be 2m~4m, such as 2m, 2.2m, 2.5m, 2.7m, 3m, 3.2m, 3.5m,
3.8m or 4m etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable, preferably
For 2.5m~3.5m.
In the present invention, the height of vertical baffle will be suitably larger than the thickness of adsorbent layer, make all flue gases be required for across
Adsorbent layer, to improve the purifying rate of flue gas.
As currently preferred technical solution, when the air inlet and gas outlet heteropleural are arranged, first support plate
It is porous plate with the second support plate, the spray ammonia component is arranged in the first flue area.At this point, being not provided with keeping off inside tower body
Plate, the disposable of flue gas entirety pass through the other side from adsorbent side, and since adsorbent moves from top to bottom,
During this, the type of flow between flue gas and adsorbent layer is mainly cross-flow.
Preferably, the spray ammonia component is arranged at the air inlet in the first flue area, uniform perpendicular to flow of flue gas direction
The mixing for being conducive to flue gas and ammonia is arranged such, to be conducive to the progress of denitrating flue gas in arrangement.
As currently preferred technical solution, when the air inlet and gas outlet homonymy are arranged, first support plate
It is porous plate with the second support plate, the baffle includes horizontal baffle and vertical baffle, and the baffle is located above air inlet,
The spray ammonia component is arranged in the second flue area, and the height of the spray ammonia component is less than the top edge of vertical baffle.At this point, cigarette
Gas passes twice through adsorbent layer, also has partial fume to be moved from bottom to top in adsorbent layer in the process, therefore, flue gas with
The type of flow between adsorbent layer is part cross-flow part adverse current.
Preferably, when the air inlet and gas outlet homonymy are arranged, first support plate is porous plate, described second
Fagging is non-multi orifice plate, and the baffle includes horizontal baffle and vertical baffle, and the baffle is located above air inlet, the spray ammonia
Component is arranged in the first flue area.
Preferably, the spray ammonia component is arranged at the air inlet in the first flue area, uniform perpendicular to flow of flue gas direction
Arrangement.At this point, since the second support plate is non-multi orifice plate, flue gas is not likely to enter to the second flue area, so when the second flue
Area is not present, and the inner wall on the second support plate and absorption tower is affixed, and flue gas mainly moves in adsorbent layer from bottom to top, therefore,
The type of flow between flue gas and adsorbent layer is mainly adverse current.
As currently preferred technical solution, when the gas outlet is set to tower body top both sides simultaneously, described first
Support plate and the second support plate are porous plate, and the baffle includes horizontal baffle and vertical baffle, and the baffle is located at air inlet
Above mouthful, the spray ammonia component includes the first spray ammonia component and the second spray ammonia component, and the first spray ammonia component setting is first
In flue area, the second spray ammonia component is arranged in the second flue area, and height is less than the top edge of vertical baffle.
Preferably, the first spray ammonia component is arranged at the air inlet in the first flue area, perpendicular to flow of flue gas direction
It is evenly arranged.
Preferably, the both sides gas outlet is equipped with valve, the valve independent control.
At this point, since tower body top both sides gas outlet can individually control opening and closing, when the gas outlet of only side is opened,
Flow of flue gas situation is identical as a kind of above-mentioned situation respectively；When both sides gas outlet opens simultaneously, can be joined according to flue gas characteristic
Number changes the internal structure of tower body in real time, and flue gas also can accordingly change in the type of flow of adsorbent layer.
As currently preferred technical solution, the tower body on the absorption tower is cuboid.
Preferably, the length of the tower body be 2m~10m, such as 2m, 3m, 4m, 5m, 6m, 7m, 8m, 9m or 10m etc., but
It is not limited in cited numerical value, other unrequited numerical value are equally applicable in the numberical range, and width is 3m~6m, such as
3m, 3.5m, 4m, 4.5m, 5m, 5.5m or 6m etc., it is not limited to cited numerical value, other are unrequited in the numberical range
Numerical value it is equally applicable, be highly 8m~30m, such as 8m, 10m, 12m, 15m, 18m, 20m, 24m, 27m or 30m etc., but not
It is only limitted to cited numerical value, other unrequited numerical value are equally applicable in the numberical range.
Second aspect, the present invention provides a kind of flue gas cleaning treatment method using above-mentioned absorption tower, the method is：
Pending flue gas enters absorption tower from air inlet, while being passed through ammonia from spray ammonia component, is absorbed by adsorbent in absorption tower
Afterwards, it is discharged from gas outlet.
As currently preferred technical solution, the pending flue gas includes SO2、NOxAnd dust.
Preferably, the flow velocity of the pending flue gas is 10m/s~25m/s, such as 10m/s, 12m/s, 15m/s, 18m/
S, 20m/s, 22m/s or 25m/s etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range
It is equally applicable, preferably 15m/s~20m/s.
Preferably, the flow velocity of the ammonia is 10m/s~20m/s, such as 10m/s, 12m/s, 14m/s, 16m/s, 18m/s
Or 20m/s etc., it is not limited to cited numerical value, other interior unrequited numerical value of the numberical range are equally applicable, preferably
For 10m/s~15m/s.
The third aspect, the present invention provides the purposes on above-mentioned absorption tower, the absorption tower for cock-oven gas purifying device,
Any one in sintering flue gas treatment device, glass kiln flue gas processing device or waste incineration station emission-control equipment or at least
Two kinds of combination, the combination is typical but non-limiting examples have：Cock-oven gas purifying device and sintering flue gas treatment device
Combination, the combination of glass kiln flue gas processing device and waste incineration station emission-control equipment, cock-oven gas purifying device, sintering
The combination of flue gas processing device and glass kiln flue gas processing device, cock-oven gas purifying device, sintering flue gas treatment device, glass
The combination etc. of glass furnace flue gas processing unit and waste incineration station emission-control equipment.
Compared with prior art, the present invention at least has the advantages that：
(1) present invention can design the position of smoke entrance, the type and baffle of support plate according to the flow performance of flue gas
Position, controllability is strong, changes the type of flow of the flue gas inside adsorption tower, improves tower body interior flow field inhomogeneities；
(2) present invention combines smoke property to adjust flow of flue gas mode, and it is rational to ensure that flue gas has in absorbent interior
Residence time improves the flexible controllability of tower body operation conditions and the adaptability to smoke components, the more reality of convenient and efficient
The purification process of existing flue gas, SO in final flue gas2Removal efficiency reach 98% or more, NOxRemoval efficiency reach 80% or more.
Description of the drawings
Fig. 1 is the structural schematic diagram on the gas cleaning absorption tower that the embodiment of the present invention 1 provides；
Fig. 2 is the structural schematic diagram on the gas cleaning absorption tower that the embodiment of the present invention 2 provides；
Fig. 3 is the structural schematic diagram on the gas cleaning absorption tower that the embodiment of the present invention 3 provides；
Fig. 4 is the structural schematic diagram on the gas cleaning absorption tower that the embodiment of the present invention 4 provides；
Wherein, 1- air inlets, the gas outlets 2-, the first gas outlets 21-, the second gas outlets 22-, 3- spray ammonia component, 31- first
Ammonia component is sprayed, 32- second sprays ammonia component, 4- support plates, the first support plates of 41-, the second support plates of 42-, 5- baffles, 51- levels
Baffle, 52- vertical baffles.
Specific implementation mode
For the present invention is better described, it is easy to understand technical scheme of the present invention, below further specifically to the present invention
It is bright.But following embodiments is only the simple example of the present invention, does not represent or limit the scope of the present invention, this
Invention protection domain is subject to claims.
Specific embodiment of the invention part provides a kind of gas cleaning absorption tower and its processing method, the absorption tower
Including tower body, air inlet 1, gas outlet 2, spray ammonia component 3 and support plate 4；Wherein, the air inlet 1 is arranged in tower body side
Lower part, the gas outlet 2 are arranged in the top of tower body, the air inlet 1 and 2 homonymy of gas outlet and/or heteropleural setting, the branch
Fagging 4 includes the first support plate 41 and the second support plate 42, is the first adjacent flue area, absorption by longitudinal subdivision inside tower body
Area and the second flue area, the air inlet 1 are connected with the first flue area, the spray ammonia component 3 setting in the first flue area and/or
In second flue area, adsorbent is loaded in the adsorption zone.
The processing method on the absorption tower is：Pending flue gas from air inlet 1 enter absorption tower, while from spray ammonia component 3
It is passed through ammonia, in absorption tower after adsorbent absorbs, is discharged from gas outlet 2.
It is present invention typical case but non-limiting embodiment below：
Embodiment 1：
A kind of gas cleaning absorption tower and its processing method are present embodiments provided, the structural schematic diagram on the absorption tower is such as
Shown in Fig. 1, including tower body, air inlet 1, gas outlet 2, ammonia-spraying grid 3 and support plate 4；Wherein, the air inlet 1 is arranged in tower
The lower part of body side, the gas outlet 2 are arranged in the top of tower body, the air inlet 1 and the setting of 2 heteropleural of gas outlet, the branch
Fagging 4 includes the first support plate 41 and the second support plate 42, is the first adjacent flue area, absorption by longitudinal subdivision inside tower body
Area and the second flue area, the air inlet 1 are connected with the first flue area, the ammonia-spraying grid 3 be arranged the first flue area into
It at gas port 1, is evenly arranged perpendicular to flow of flue gas direction, granular active carbon adsorbent is loaded in the adsorption zone.
The tower body on the absorption tower is the cuboid of long 2m, width 4m, high 8m, wherein the wide 2m of intermediate adsorption zone, both sides
The width in the first flue area and the second flue area is 1m.
First support plate, 41 and second support plate 42 is porous plate, and percent opening is 30%.
It is using the method that the absorption tower carries out purification absorption processing to waste incineration station flue gas：
Contain SO2(content is in 500mg/m3Below) and NOxPending flue gas from air inlet 1 enter absorption tower, flue gas
Flow velocity is 12m/s, while being passed through ammonia from ammonia-spraying grid 3, and the flow velocity of ammonia is 10m/s, is inhaled by activated carbon in absorption tower
After attached dose absorbs, it is discharged from gas outlet 2.
In the present embodiment, the treating capacity of flue gas is up to 6000Nm3/ h, SO after fume treatment2Removal efficiency reaches 98.2%, NOx
Removal efficiency reaches 80.6%, reaches the emission of industrial pollutants standard of national regulation.
Embodiment 2：
A kind of gas cleaning absorption tower and its processing method are present embodiments provided, the structural schematic diagram on the absorption tower is such as
Shown in Fig. 2, including tower body, air inlet 1, gas outlet 2, ammonia-spraying grid 3 and support plate 4；Wherein, the air inlet 1 is arranged in tower
The lower part of body side, the gas outlet 2 are arranged in the top of tower body, the air inlet 1 and the setting of 2 homonymy of gas outlet, the branch
Fagging 4 includes the first support plate 41 and the second support plate 42, is the first adjacent flue area, absorption by longitudinal subdivision inside tower body
Area and the second flue area, the air inlet 1 are connected with the first flue area, and the ammonia-spraying grid 3 is arranged in the second flue area, institute
State the cylindrical activated coke adsorbent of filling in adsorption zone.
The tower body on the absorption tower is the cuboid of long 4m, width 4m, high 16m, wherein the wide 2m of intermediate adsorption zone, both sides
The first flue area and the width in the second flue area be 1m.
First support plate, 41 and second support plate 42 is porous plate, and percent opening is 35%.
The absorption tower further includes baffle 5, and the baffle 5 is arranged in the first flue area；The baffle 5 includes horizontal keeps off
Plate 51 and vertical baffle 52, it is 3m that the horizontal baffle 51, which is arranged at a distance from 1 top of air inlet, with 1 bottom of air inlet, described
Vertical baffle 52 is arranged along the first support plate 41, and top edge is 4m, the side of the horizontal baffle 51 at a distance from lower edge
It is connected with the lower edge of vertical baffle 52, the other side is connected with tower body inner wall, and the height of the ammonia-spraying grid 3 is less than vertical baffle
52 top edge.
It is using the method that the absorption tower carries out purification absorption processing to glass kiln flue gas：
Contain SO2(content is in 2000mg/m3Below) and NOxPending flue gas from air inlet 1 enter absorption tower, flue gas
Flow velocity be 20m/s, while being passed through ammonia from ammonia-spraying grid 3, the flow velocity of ammonia is 16m/s, and activated coke is passed through in absorption tower
After adsorbent absorbs, it is discharged from gas outlet 2.
In the present embodiment, the treating capacity of flue gas is up to 25000Nm3/ h, SO after fume treatment2Removal efficiency reaches 98.8%,
NOxRemoval efficiency reaches 82.5%, reaches the emission of industrial pollutants standard of national regulation.
Embodiment 3：
A kind of gas cleaning absorption tower and its processing method are present embodiments provided, the structural schematic diagram on the absorption tower is such as
Shown in Fig. 3, including tower body, air inlet 1, gas outlet 2, ammonia-spraying grid 3 and support plate 4；Wherein, the air inlet 1 is arranged in tower
The lower part of body side, the gas outlet 2 are arranged in the top of tower body, the air inlet 1 and the setting of 2 homonymy of gas outlet, the branch
Fagging 4 includes the first support plate 41 and the second support plate 42, is the first adjacent flue area, absorption by longitudinal subdivision inside tower body
Area and the second flue area, the air inlet 1 are connected with the first flue area, the ammonia-spraying grid 3 be arranged the first flue area into
It at gas port 1, is evenly arranged perpendicular to flow of flue gas direction, graininess vanadium titanium catalyst is loaded in the adsorption zone.
First support plate 41 is porous plate, and percent opening is 40%, and second support plate 42 is non-multi orifice plate, this
When be not present the second flue area.
The tower body on the absorption tower is the cuboid of long 6m, width 3m, high 10m, wherein intermediate adsorption zone wide 2m, first
Flue sector width is 1m.
The absorption tower further includes baffle 5, and the baffle 5 is arranged in the first flue area；The baffle 5 includes horizontal keeps off
Plate 51 and vertical baffle 52, it is 2m that the horizontal baffle 51, which is arranged at a distance from 1 top of air inlet, with 1 bottom of air inlet, described
Vertical baffle 52 is arranged along the first support plate 41, and top edge is 2.5m at a distance from lower edge, and the one of the horizontal baffle 51
Side is connected with the lower edge of vertical baffle 52, and the other side is connected with tower body inner wall.
It is using the method that the absorption tower carries out purification absorption processing to coke oven flue gas：
Contain SO2(content is in 2000mg/m3Below) and NOxPending flue gas from air inlet 1 enter absorption tower, flue gas
Flow velocity be 18m/s, while being passed through ammonia from ammonia-spraying grid 3, the flow velocity of ammonia is 15m/s, is urged by vanadium titanium in absorption tower
After agent absorbs, it is discharged from gas outlet 2.
In the present embodiment, the treating capacity of flue gas is up to 24000Nm3/ h, SO after fume treatment2Removal efficiency reaches 98.5%,
NOxRemoval efficiency reaches 82.0%, reaches the emission of industrial pollutants standard of national regulation.
Embodiment 4：
A kind of gas cleaning absorption tower and its processing method are present embodiments provided, the structural schematic diagram on the absorption tower is such as
Shown in Fig. 4, including tower body, air inlet 1, gas outlet 2, ammonia-spraying grid 3 and support plate 4；Wherein, the air inlet 1 is arranged in tower
The lower part of body side, the gas outlet 2 include the first gas outlet 21 and the second gas outlet 22, are separately positioned on the top two of tower body
Side, installation valve individually controls on each exhaust pass；The support plate 4 includes the first support plate 41 and the second support plate 42,
It is the first adjacent flue area, adsorption zone and the second flue area, the air inlet 1 and the first flue by longitudinal subdivision inside tower body
Area is connected；The ammonia-spraying grid 3 includes the first ammonia-spraying grid 31 and the second ammonia-spraying grid 32, and first ammonia-spraying grid 31 is arranged
It at the air inlet 1 in the first flue area, is evenly arranged perpendicular to flow of flue gas direction, second ammonia-spraying grid 32 setting is the
In two flue areas, height is less than the top edge of vertical baffle 52；Granular adsorbent, including activity are loaded in the adsorption zone
Charcoal and vanadium titanium catalyst.
The tower body on the absorption tower is the cuboid of long 7m, width 4m, high 12m, wherein the wide 2m of intermediate adsorption zone, both sides
The first flue area and the width in the second flue area be 1m.
First support plate, 41 and second support plate 42 is porous plate, and percent opening is 50%.
The absorption tower further includes baffle 5, and the baffle 5 is arranged in the first flue area；The baffle 5 includes horizontal keeps off
Plate 51 and vertical baffle 52, it is 4m that the horizontal baffle 51, which is arranged at a distance from 1 top of air inlet, with 1 bottom of air inlet, described
Vertical baffle 52 is arranged along the first support plate 41, and top edge is 3.5m at a distance from lower edge, and the one of the horizontal baffle 51
Side is connected with the lower edge of vertical baffle 52, and the other side is connected with tower body inner wall.The baffle plate setting is dismountable, passes through card
The carbon steel weldment of groove shape is installed in tower body.
It is using the method that the absorption tower carries out purification absorption processing to sintering flue gas：
Contain SO2(content is in 2000mg/m3Below) and NOxPending flue gas from air inlet 1 enter absorption tower, flue gas
Flow velocity be 25m/s, while being passed through ammonia from ammonia-spraying grid 3, the flow velocity of ammonia is 20m/s, and activated carbon is passed through in absorption tower
After being absorbed with vanadium titanium catalyst, it is discharged from gas outlet 2.
In the present embodiment, the treating capacity of flue gas is up to 34000Nm3/ h, SO after fume treatment2Removal efficiency reaches 99.2%,
NOxRemoval efficiency reaches 82.8%, reaches the emission of industrial pollutants standard of national regulation.
Absorption tower described in the present embodiment in the process of running, according to smoke discharging characteristic select 2 valve of gas outlet opening and closing,
Whether ammonia spraying amount and baffle 5 arrangement of ammonia-spraying grid 3, control flue gas reasonably passes through absorption tower.Such as detect SO in flue gas2Row
High-volume it is consistently less than 1000mg/m3, 22 valve of the second gas outlet of heteropleural is opened, 21 valve of the first gas outlet of homonymy is closed,
First flue area is not provided with baffle 5, and ammonia is sprayed by the first ammonia-spraying grid 31, and first flue gas is made to pass through adsorption zone, realizes desulfurization
Denitration purification process；If detecting SO2Content continues noticeably greater than 1000mg/m3When, close 22 valve of the second gas outlet of heteropleural
Door opens 21 valve of the first gas outlet of homonymy, and baffle 5 is arranged in the first flue area in tower body, and ammonia is by the second ammonia-spraying grid 32
It sprays into, makes flue gas that can pass twice through adsorption zone, desulphurization denitration purification process is realized, according to pollutant emission content in real-time flue gas
Adjustment absorbs tower structure, ensures clean-up effect, improves adaptability of the absorption tower to flue gas.
Comparative example 1：
This comparative example provides a kind of gas cleaning absorption tower and its processing method, and the structure on the absorption tower is with reference to implementing
Structure in example 2, differs only in：Baffle 5 is not provided in the absorption tower.
During the absorption tower purified treatment flue gas, since the first flue area is not provided with baffle 5, flue gas is from air inlet
1 inlet port, most flue gases move from bottom to top along the first flue area, without adsorption zone directly from the gas outlet on top 2
It leaves, the effect that purification absorbs can hardly be played at this time.
Can be seen that absorption tower of the present invention with comparative example based on the above embodiments can set according to the flow behavior of flue gas
The position of smoke entrance, the type of support plate and the position of baffle are counted, the controllability of enhancing tower body operation changes flue gas and exists
The type of flow inside adsorption tower ensures that flue gas has the rational residence time in absorbent interior, improves absorption tower to flue gas
The purification of the adaptability of ingredient, more the realization flue gas of convenient and efficient absorbs, and reaches the emission of industrial pollutants mark of national regulation
It is accurate.
Applicant states that the present invention illustrates detailed device structure and the technological process of the present invention by above-described embodiment,
But the invention is not limited in above-mentioned detailed device structure and technological processes, that is, it is above-mentioned detailed not mean that the present invention has to rely on
Apparatus structure and technological process could be implemented.Person of ordinary skill in the field it will be clearly understood that any improvement in the present invention,
The addition of equivalence replacement and supplementary structure to apparatus of the present invention structure, the selection etc. of concrete mode all fall within the guarantor of the present invention
It protects within range and the open scope.
Claims (10)
1. a kind of gas cleaning absorption tower, which is characterized in that the absorption tower includes tower body, air inlet (1), gas outlet (2), spray
Ammonia component (3) and support plate (4)；Wherein, the air inlet (1) is arranged in the lower part of tower body side, gas outlet (2) setting
On the top of tower body, the air inlet (1) and gas outlet (2) homonymy and/or heteropleural setting, the support plate (4) include first
Longitudinal subdivision inside tower body is the first adjacent flue area, adsorption zone and second by support plate (41) and the second support plate (42)
Flue area, the air inlet (1) are connected with the first flue area, and the spray ammonia component (3) is arranged in the first flue area and/or second
In flue area, adsorbent is loaded in the adsorption zone.
2. absorption tower according to claim 1, which is characterized in that the spray ammonia component (3) is ammonia-spraying grid；
Preferably, first support plate (41) and the second support plate (42) are arranged in parallel；
Preferably, first support plate (41) and the second support plate (42) are porous plate；
Preferably, the percent opening of first support plate (41) and the second support plate (42) stands alone as 30%~50%, preferably
35%~45%；
Preferably, second support plate (42) is non-multi orifice plate；
Preferably, the adsorbent includes any one in activated carbon, activated coke or vanadium titanium bulk catalyst or at least two
Combination；
Preferably, the shape of the adsorbent is graininess and/or cylindric.
3. absorption tower according to claim 1 or 2, which is characterized in that when absorption tower includes being set to homonymy with air inlet (1)
Gas outlet (2) when, the absorption tower further includes baffle (5), and the baffle (5) is arranged in the first flue area；
Preferably, the baffle (5) includes horizontal baffle (51) and vertical baffle (52), horizontal baffle (51) setting into
Gas port (1) top, the vertical baffle (52) along the first support plate (41) be arranged, the side of the horizontal baffle (51) with it is vertical
The lower edge of baffle (52) is connected, and the other side is connected with tower body inner wall；
Preferably, the horizontal baffle (51) is 1m~5m, preferably 2m~4m at a distance from air inlet (1) bottom；
Preferably, the height of the vertical baffle (52) is 2m~4m, preferably 2.5m~3.5m.
4. according to claim 1-3 any one of them absorption tower, which is characterized in that the air inlet (1) and gas outlet (2) are different
When side is arranged, first support plate (41) and the second support plate (42) are porous plate, and the spray ammonia component (3) is arranged the
In one flue area；
Preferably, the spray ammonia component (3) is arranged at the air inlet (1) in the first flue area, equal perpendicular to flow of flue gas direction
Even arrangement.
5. absorption tower according to claim 3 or 4, which is characterized in that the air inlet (1) and gas outlet (2) homonymy are set
When setting, first support plate (41) and the second support plate (42) are porous plate, and the baffle (5) includes horizontal baffle (51)
With vertical baffle (52), the baffle (5) is located above air inlet (1), and the spray ammonia component (3) is arranged in the second flue area
Interior, the height of the spray ammonia component (3) is less than the top edge of vertical baffle (52)；
Preferably, when the air inlet (1) and gas outlet (2) homonymy are arranged, first support plate (41) is porous plate, described
Second support plate (42) is non-multi orifice plate, and the baffle (5) includes horizontal baffle (51) and vertical baffle (52), the baffle
(5) it is located above air inlet (1), the spray ammonia component (3) is arranged in the first flue area；
Preferably, the spray ammonia component (3) is arranged at the air inlet (1) in the first flue area, equal perpendicular to flow of flue gas direction
Even arrangement.
6. according to claim 3-5 any one of them absorption tower, which is characterized in that the gas outlet (2) while being set to tower
When the both sides of body top, first support plate (41) and the second support plate (42) are porous plate, and the baffle (5) includes level
Baffle (51) and vertical baffle (52), the baffle (5) are located above air inlet (1), and the spray ammonia component (3) includes the first spray
Ammonia component (31) and the second spray ammonia component (32), the first spray ammonia component (31) are arranged in the first flue area, and described second
It sprays ammonia component (32) to be arranged in the second flue area, height is less than the top edge of vertical baffle (52)；
Preferably, the first spray ammonia component (31) is arranged at the air inlet (1) in the first flue area, perpendicular to flow of flue gas side
To being evenly arranged；
Preferably, the both sides gas outlet (2) is equipped with valve, the valve independent control.
7. according to claim 1-6 any one of them absorption tower, which is characterized in that the tower body on the absorption tower is cuboid；
Preferably, the length of the tower body is 2m~10m, and width is 3m~6m, is highly 8m~30m.
8. a kind of flue gas cleaning treatment method using the absorption towers any one of claim 1-7, which is characterized in that the side
Method is：Pending flue gas enters absorption tower from air inlet (1), while being passed through ammonia from spray ammonia component (3), passes through in absorption tower
After adsorbent absorbs, it is discharged from gas outlet (2).
9. according to the method described in claim 8, it is characterized in that, the pending flue gas includes SO2、NOxAnd dust；
Preferably, the flow velocity of the pending flue gas is 10m/s~25m/s, preferably 15m/s~20m/s；
Preferably, the flow velocity of the ammonia is 10m/s~20m/s, preferably 10m/s~15m/s.
10. according to the purposes on the absorption towers any one of claim 1-7, which is characterized in that the absorption tower is used for coke oven cigarette
Appoint in air purifying apparatus, sintering flue gas treatment device, glass kiln flue gas processing device or waste incineration station emission-control equipment
It anticipates a kind of or at least two combinations.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159419.XA CN108325358A (en) | 2018-02-26 | 2018-02-26 | A kind of gas cleaning absorption tower and its processing method and purposes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810159419.XA CN108325358A (en) | 2018-02-26 | 2018-02-26 | A kind of gas cleaning absorption tower and its processing method and purposes |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111408263A (en) * | 2020-03-20 | 2020-07-14 | 北京海顺德钛催化剂有限公司 | Flue gas treatment device |
| CN114272744A (en) * | 2021-12-09 | 2022-04-05 | 西南化工研究设计院有限公司 | Moving bed device and process for dry flue gas desulfurization |
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| KR20140041248A (en) * | 2012-09-27 | 2014-04-04 | 현대제철 주식회사 | Apparatus for treating exhaust gas |
| CN106731449A (en) * | 2016-11-23 | 2017-05-31 | 中国科学院过程工程研究所 | A kind of column for smoke purification |
| CN206474009U (en) * | 2017-02-20 | 2017-09-08 | 江苏科易达环保科技有限公司 | Absorbent charcoal adsorber and charcoal absorption desorption system |
| CN107469561A (en) * | 2017-09-19 | 2017-12-15 | 中国科学院过程工程研究所 | A kind of gas cleaning absorption tower and its processing method |
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| JP2828193B2 (en) * | 1993-11-18 | 1998-11-25 | 住友重機械工業株式会社 | Desulfurization / denitration tower |
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| CN111408263A (en) * | 2020-03-20 | 2020-07-14 | 北京海顺德钛催化剂有限公司 | Flue gas treatment device |
| CN114272744A (en) * | 2021-12-09 | 2022-04-05 | 西南化工研究设计院有限公司 | Moving bed device and process for dry flue gas desulfurization |
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