CN109550379A - A kind of equipment and its technique for low-temp desulfurization denitration in flue gas - Google Patents
A kind of equipment and its technique for low-temp desulfurization denitration in flue gas Download PDFInfo
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- CN109550379A CN109550379A CN201710884080.5A CN201710884080A CN109550379A CN 109550379 A CN109550379 A CN 109550379A CN 201710884080 A CN201710884080 A CN 201710884080A CN 109550379 A CN109550379 A CN 109550379A
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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
- B01D53/75—Multi-step processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
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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
- B01D53/14—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 absorption
- B01D53/1406—Multiple stage absorption
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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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
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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
- B01D53/14—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 absorption
- B01D53/1456—Removing acid components
- B01D53/1481—Removing sulfur dioxide or sulfur trioxide
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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
- B01D53/54—Nitrogen compounds
- B01D53/56—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
- B01D53/34—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
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/102—Oxygen
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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
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Abstract
The present invention relates to a kind of equipment for low-temp desulfurization denitration in flue gas, including ash handling equipment, oxygen regulating device, absorption tower and absorbing liquid circulating slot, the ash handling equipment, oxygen regulating device passes sequentially through flue with absorption tower and is connected to, the front end of the ash handling equipment connects gas inlet, flow control valve is equipped between the gas inlet and ash handling equipment, the first temperature control equipment is equipped between the ash handling equipment and oxygen regulating device, second temperature control device is equipped between the oxygen regulating device and absorption tower, air-introduced machine is equipped between the second temperature control device and absorption tower, the first valve is equipped between first temperature control equipment and ash handling equipment, the absorbing liquid circulating slot is connect with absorption tower, the present invention can be sufficiently separated the particulate matter in flue gas, and by extending mobile road of the flue gas in absorption tower Diameter extends the reaction time, abundant desulfurization and denitrification reaction is carried out to flue gas, so that flue gas reaches discharge standard.
Description
Technical field
The present invention relates to flue gases purification field more particularly to it is a kind of for the equipment of low-temp desulfurization denitration in flue gas and
Its technique.
Background technique
In China denitrating flue gas market, it is China NO that catalysts selective, which restores (SCR) technology,XThe main skill of emission control
Art, but its active temperature is at 380-420 DEG C, and coking flue gas is 180 DEG C or so after waste heat recycles, and is far below SCR catalyst
Active temperature, for the operational characteristic of China's coking flue gas, recycling flue gas desulfurization and denitrification new technology under cryogenic conditions in research and development
It is the important measures that China realizes sustainable development, huge economic benefit and environmental benefit will be brought.As flue gas desulfurization is de-
The development of nitre technology, each state has all carried out the research of low-temperature flue gas simultaneous SO_2 and NO removal technology, but does not all have also both at home and abroad now
There is mature low-temperature denitration technology, all in research and development and experimental stage, there is also more problems for existing technology, such as in flue gas
Containing a large amount of particulate matter, desulphurization denitration is insufficient, and especially in wet process, particulate matter can largely effect on the de- of flue gas
Sulphur denitration reaction influences flue gas and sufficiently reacts with coming into full contact with for absorbing liquid, so that flue gas emission is not up to standard.
Summary of the invention
In view of the above-mentioned state of the art, technical problem to be solved by the present invention lies in provide a kind of to be sufficiently separated
Particulate matter in flue gas, and to the flue gas after separation carry out abundant desulfurization and denitrification reaction for low-temp desulfurization denitration in flue gas
Equipment and its technique.
The technical scheme of the invention to solve the technical problem is: a kind of for low-temp desulfurization denitration in flue gas
Equipment, including ash handling equipment, oxygen regulating device, absorption tower and absorbing liquid circulating slot, the ash handling equipment, oxygen regulating device
It passes sequentially through flue with absorption tower to be connected to, the front end of the ash handling equipment connects gas inlet, the gas inlet and ash disposal
It is equipped with flow control valve between device, the first temperature control equipment, institute are equipped between the ash handling equipment and oxygen regulating device
State and be equipped with second temperature control device between oxygen regulating device and absorption tower, the second temperature control device and absorption tower it
Between be equipped with air-introduced machine, between first temperature control equipment and ash handling equipment be equipped with the first valve, the absorbing liquid circulating slot
It is connect with absorption tower；
The ash handling equipment includes dust cleaning brush, the first motor for driving dust cleaning brush, and dust collecting box and ceramic filter plate are described clear
Ash is brushed in the horizontal flue section between flow control valve and the first valve, the outer circumferential direction of the dust cleaning brush and flue
Inner wall offsets, and the ceramic filter plate is arranged between dust cleaning brush and the first valve, the end of the dust cleaning brush and ceramic filter
The dust that plate offsets for removing ceramic filter plate surface, flue section between the flow control valve and the first valve
Bottom is provided with the ash discharging hole being connected to dust collecting box, and the lower section of the ash discharging hole is equipped with the second valve；
It is provided with baffle assembly in the absorption tower, which includes first to be from bottom to top equidistantly staggered
Partition, second partition, third partition and the 4th partition, the first partition, second partition, third partition, the 4th partition etc. are big,
The first partition, third partition, is provided with multiple funnel-shaped holes on the 4th partition at second partition, and the multiple funnel-shaped hole is close
Collection is arranged on partition, and described be staggered refers to, first partition and third partition are arranged in the same side on absorption tower, second every
Side opposite with first partition, third partition in absorption tower is arranged in the 4th partition in plate, and second partition front end protrudes into
Between one partition and third partition, third plate front end is protruded between second partition and the 4th partition；
Bottom centre position in the absorption tower is equipped with agitator arm, which passes through the second motor driven,
Top in the absorption tower is equipped with spray tube, and the top of the spray tube is equipped with filling adsorption layer, the spray tube by pipeline with
The connection of absorbing liquid circulating slot, the bottom on the absorption tower are equipped with liquid outlet, which passes through pipeline and absorbing liquid circulating slot
Bottom connection, the gas outlet to discharge flue gas after purification is provided at the top of absorption tower, and absorb the bottom of the tower is connect with flue
Place is provided with air inlet, and the first partition is arranged above air inlet.
Further, the big opening end of the funnel-shaped hole is towards at the top of absorption tower, and osculum end is and big towards absorb the bottom of the tower
Mouthful end is flushed with partition upper surface, and osculum end is downwardly projected partition lower surface, the up big and down small structure setting of funnel-shaped hole, so that
When absorbing liquid spray is on partition, can be passed through from funnel-shaped hole, as the diminution in aperture forms thread, and cooperate first every
Plate, second partition, third partition, the 4th partition are from bottom to top staggered and multiple funnel-shaped holes are densely arranged in partition
On, multi-stage spray can be formed, so that absorbing liquid comes into full contact with flue gas, thus to the NO in flue gasX、SO2It carries out sufficiently de-
It removes, in addition, first partition, second partition, third partition, the 4th partition are from bottom to top staggered, when absorbing liquid floods partition
When, partition can obstruct flue gas and directly move straight up, so that flue gas is moved along baffle surface, extend the mobile road of flue gas
Diameter, to extend the haptoreaction time of flue gas and absorbing liquid, so that absorbing liquid comes into full contact with flue gas, thus in flue gas
NOX、SO2Sufficiently removed.
Further, the absorbing liquid circulating slot is also connected with waste liquid device, which can recycle circulation fluid.
Further, the ash discharging hole is funnel-shaped, is convenient to clean the grey wall surface along funnelform ash discharging hole to get off
It falls into dust collecting box.
Further, the distance between the first partition, second partition, third partition and the 4th partition are greater than zero, should
First partition, second partition, third partition and the 4th partition length be greater than the width of absorption tower half so that partition staggered row
Column form bypass channel, extend the movement routine of flue gas.
Further, the spray tube is equipped with multiple spray heads, and the spray head and spray tube are rotatablely connected, so that absorbing
Liquid multi-faceted can spray.
Further, the filling adsorption layer is active carbon layer, further purification discharge flue gas.
The technique that desulphurization denitration is carried out using above-mentioned flue gas desulfurization and denitrification equipment, is included the following steps:
A, the flue gas that temperature is 160-180 DEG C after waste heat recycling first passes through ash handling equipment and carries out ash disposal processing；
B, ash disposal treated flue gas passes through the first temperature control equipment, and adjusting flue-gas temperature is 130-150 DEG C, by flue gas
It is passed through in oxygen regulating device and is reacted, promote NOXIt is converted into NO2；
C, the flue gas after reacting with oxygen passes through second temperature control device, and adjusting flue-gas temperature is 110-130 DEG C, flue gas
Enter absorption tower from the air inlet of absorb the bottom of the tower by air-introduced machine and carries out desulfurization and denitrification reaction；
D, the absorbing liquid in absorbing liquid circulating slot is sprayed into absorption tower by the spray tube in absorption tower, in spray, is inhaled
It receives liquid and forms multi-stage spray by the funnel-shaped hole on first partition, second partition, third partition, the 4th partition, and cooperate and stir
The agitation for mixing impeller, to the NO in flue gasX、SO2It is sufficiently removed, and is absorbed and filter by filling adsorption layer, so that flue gas
Reach discharge standard, is discharged from absorption tower top gas outlet, when absorbing liquid did not had four partitions, controls the spray flow on absorption tower
It is balanced with the discharge amount of absorb the bottom of the tower liquid outlet, which send the liquid product in absorption tower into absorbing liquid circulating slot
It is interior；
E, circulation fluid in absorbing liquid circulating slot introduce waste liquid device handled, recycling, be eventually converted into sulphur
Hydrochlorate and nitrate mixture.
Compared with the prior art, the advantages of the present invention are as follows: the present invention is by setting ash handling equipment, by ceramic filter plate pair
Flue gas is filtered, and ceramic filter plate has the characteristics that the obstructed ash of ventilation, can divide the particulate matter in flue gas with gas completely
From, so that particulate matter is avoided to influence the desulfurization and denitrification reaction of subsequent flue gas, in addition, the setting of oxygen regulating device, so that cigarette
NO in gasXIt is converted into NO2, convenient for the absorption of absorbing liquid, thus desulphurization denitration as sufficient as possible, finally, by absorption tower
Baffle assembly is set, which includes the first partition being from bottom to top equidistantly staggered, second partition, third partition
With the 4th partition, bypass channel is formed, extends the movement routine of flue gas, and cooperate funnel-shaped hole densely arranged on partition, makes
It when obtaining on absorbing liquid spray to partition, can be passed through from funnel-shaped hole, as the diminution in aperture forms thread, and cooperate first
Partition, second partition, third partition, the 4th partition be from bottom to top staggered and multiple funnel-shaped holes it is densely arranged every
On plate, multi-stage spray can be formed, and the second motor driven agitator arm is cooperated to stir absorbing liquid, greatly increase flue gas and absorbing
Mobile activity in liquid, so that absorbing liquid comes into full contact with flue gas, thus to the NO in flue gasX、SO2It is sufficiently removed, separately
Outside, first partition, second partition, third partition, the 4th partition are from bottom to top staggered, when absorbing liquid floods partition, every
Plate can obstruct flue gas and directly move straight up, so that flue gas is moved along baffle surface, extend the movement routine of flue gas, from
And extend the haptoreaction time of flue gas and absorbing liquid, so that absorbing liquid comes into full contact with flue gas, thus to the NO in flue gasX、
SO2It is sufficiently removed, reaches standard limit of smog release.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the top view of partition of the present invention；
Fig. 3 is the cross-sectional view of partition of the present invention；
As shown, 1 absorption tower, 1.1 air inlets, 1.2 gas outlets, 1.3 liquid outlets, 2 oxygen regulating devices, 3 first temperature
Degree control device, 4 second temperature control devices, 5 air-introduced machines, 6 absorbing liquid circulating slots, 7 gas inlets, 8 flues, 9 first
Partition, 10 second partitions, 11 third partitions, 12 the 4th partitions, 13 funnel-shaped holes, 14 spray tubes, 15 spray heads, 16 filling adsorptions
Layer, 17 waste liquid devices, 18 flow control valves, 19 first valves, 20 second valves, 21 ash discharging holes, 22 dust collecting boxes, 23 ceramic filters
Plate, 24 dust cleaning brushs, 25 first motors, 26 agitator arms, 27 second motors.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
As shown in Figure 1-3, a kind of equipment for low-temp desulfurization denitration in flue gas, including ash handling equipment, oxygen adjust dress
2, absorption tower 1 and absorbing liquid circulating slot 6 are set, the ash handling equipment, oxygen regulating device 2 and absorption tower 1 pass sequentially through fume pipe
Road 8 is connected to, and the front end of the ash handling equipment connects gas inlet 7, and flow is equipped between the gas inlet 7 and ash handling equipment and is adjusted
Valve 18, is equipped with the first temperature control equipment 3 between the ash handling equipment and oxygen regulating device 2, the oxygen regulating device 2 with
It is equipped with second temperature control device 4 between absorption tower 1, air-introduced machine is equipped between the second temperature control device 4 and absorption tower 1
5, the first valve 19, the absorbing liquid circulating slot 6 and absorption tower are equipped between first temperature control equipment 3 and ash handling equipment
1 connection；
The ash handling equipment includes the first motor 25 of dust cleaning brush 24, driving dust cleaning brush 24, dust collecting box 22 and ceramic filter
Plate 23, in the horizontal flue section between flow control valve 18 and the first valve 19 of the dust cleaning brush 24, the dust cleaning brush 24
Outer circumferential direction and the inner wall of flue offset, the ceramic filter plate 23 is arranged between dust cleaning brush 24 and the first valve 19,
The dust that the end of the dust cleaning brush 24 and ceramic filter plate 23 offset for removing 23 surface of ceramic filter plate, the flow tune
The bottom of flue section between section valve 18 and the first valve 19 is provided with the ash discharging hole 21 being connected to dust collecting box 22, the ash discharging hole
21 lower section is equipped with the second valve 20；
It is provided with baffle assembly in the absorption tower 1, which includes to be from bottom to top equidistantly staggered
One partition 9, second partition 10, third partition 11 and the 4th partition 12, the first partition 9, second partition 10, third partition
11, the 4th partition 12 etc. is big, which second partition 10, third partition 11, is provided with multiple leakages on the 4th partition 12
Bucket shape hole 13, the multiple funnel-shaped hole 13 is densely arranged on partition, and described be staggered refers to, first partition 9 and third
Partition 11 is arranged in the same side on absorption tower 1, second partition 10 and the 4th partition 12 be arranged in absorption tower 1 with first partition 9,
The opposite side of third partition 11, and 10 front end of second partition is protruded between first partition 9 and third partition 11, third partition 11
Front end is protruded between second partition 10 and the 4th partition 12；
Bottom centre position in the absorption tower 1 is equipped with agitator arm 26, which passes through the second motor
27 drive, and the top in the absorption tower 1 is equipped with spray tube 14, and the top of the spray tube 14 is equipped with filling adsorption layer 16, the spray
Shower pipe 14 is connect by pipeline with absorbing liquid circulating slot 6, and the bottom on the absorption tower 1 is equipped with liquid outlet 1.3, the liquid outlet 1.3
Be connected to by pipeline with the bottom of absorbing liquid circulating slot 6, the top on absorption tower 1 be provided with to discharge purification after flue gas gas outlet
1.2,1 bottom of absorption tower and 8 junction of flue are provided with air inlet 1.1, and the first partition 9 is arranged on air inlet 1.1
Side.
The big opening end of the funnel-shaped hole 13 is towards the top of absorption tower 1, and osculum end is towards 1 bottom of absorption tower, and big opening end
It is flushed with partition upper surface, osculum end is downwardly projected partition lower surface, the up big and down small structure setting of funnel-shaped hole 13, so that inhaling
When receiving liquid spray on partition, can be passed through from funnel-shaped hole 13, as the diminution in aperture forms thread, and cooperate first every
Plate 9, second partition 10, third partition 11, the 4th partition 12 are from bottom to top staggered and multiple funnel-shaped holes 13 are intensively arranged
Cloth can form multi-stage spray on partition, so that absorbing liquid comes into full contact with flue gas, thus to the NO in flue gasX、SO2It carries out
Sufficiently removing, in addition, first partition 9, second partition 10, third partition 11, the 4th partition 12 are from bottom to top staggered, works as suction
When receipts liquid floods partition, partition can obstruct flue gas and directly move straight up, so that flue gas is moved along baffle surface, extend
The movement routine of flue gas, thus extend the haptoreaction time of flue gas and absorbing liquid, so that absorbing liquid comes into full contact with flue gas, from
And to the NO in flue gasX、SO2Sufficiently removed.
The absorbing liquid circulating slot 6 is also connected with waste liquid device 17, which can recycle circulation fluid.
The ash discharging hole 21 is funnel-shaped, is convenient to clean the ash to get off and falls into collection along the wall surface of funnelform ash discharging hole 21
In cinder box 22.
The distance between the first partition 9, second partition 10, third partition 11 and the 4th partition 12 are greater than zero, this
One partition 9, second partition 10, third partition 11 and the 4th partition 12 length be greater than the width of 1 half of absorption tower so that partition
It is staggered, forms bypass channel, extend the movement routine of flue gas.
The spray tube 14 is equipped with multiple spray heads 15, and the spray head 15 and spray tube 14 are rotatablely connected, so that absorbing
Liquid multi-faceted can spray.
The filling adsorption layer 16 is active carbon layer, further purification discharge flue gas.
Working principle: opening the first valve 19, closes the second valve 20, the cigarette that temperature is 160-180 DEG C after waste heat recycling
Gas enters flue 8 from gas inlet 7, and by the adjustable flue gas flow of flow control valve 18, flue gas initially enters ash disposal
Device is filtered by ceramic filter plate 23, and ceramic filter plate 23 has the characteristics that the obstructed ash of ventilation, can be by flue gas
Grain substance is separated with gas completely, and the dust filtered out is gathered in the flue between flow control valve 18 and the first valve 19
In section, and most of dirt accumulation is on 23 surface of ceramic filter plate, so that the desulphurization denitration for avoiding particulate matter from influencing flue gas is anti-
It answers；
Flue gas after ash disposal enters the first temperature control equipment 3, and flue-gas temperature is adjusted to 140 DEG C, then arranges flue gas
Enter and reacted in oxygen regulating device 2, since absorbing liquid is to NO2Absorption be better than the absorption to NO, so as far as possible
NO is promoted to be oxidized to NO2, when flue-gas temperature is at 140 DEG C, the NO in flue gas is reacted with oxygen is converted to NO2Condition is best, so
3 temperature adjustment of the first temperature control equipment is first passed through before flue gas is reacted with oxygen to 140 DEG C；
Flue gas after peroxidization enters second temperature control device 4, flue-gas temperature is adjusted to 115 DEG C, the temperature
Under degree, the desulfurization and denitrification reaction of flue gas is best, and flue gas is then discharged into absorption from the air inlet 1.1 on absorption tower 1 by air-introduced machine 5
In tower 1, the absorbing liquid in absorbing liquid circulating slot 6 is sprayed into absorption tower 1 by the spray tube 14 in absorption tower 1, on spray tube 14
Spray head 15 multidirectional can adjust, realize the multi-faceted spray of all standing,, can when absorbing liquid spray is on partition in spray
To be passed through from funnel-shaped hole 13, as the diminution in aperture forms thread, and cooperate first partition 9, second partition 10, third every
Plate 11, the 4th partition 12 are from bottom to top staggered and multiple funnel-shaped holes 13 are densely arranged on partition, can be formed more
Grade spray, so that absorbing liquid comes into full contact with flue gas, in addition, first partition 9, second partition 10, third partition 11, the 4th partition
12 are from bottom to top staggered, and when absorbing liquid floods partition, partition can obstruct flue gas and directly move straight up, so that cigarette
Gas is moved along baffle surface, and flue gas successively bypasses first partition 9, second partition 10, third partition after the entrance of air inlet 1.1
11, the 4th partition 12 detours upwards, extends the movement routine of flue gas, thus extend the haptoreaction time of flue gas and absorbing liquid,
And when absorbing liquid floods first partition 9, flue gas is passed through absorbing liquid, opens the driving agitation of agitator arm 26 of the second motor 27 and absorbs
Liquid increases the mobile activity of flue gas, so that absorbing liquid comes into full contact with flue gas, thus to the NO in flue gasX、SO2It carries out abundant
Removing, and absorbed and filter by active carbon layer, so that flue gas reaches discharge standard, from 1 top gas outlet of absorption tower, 1.2 row
Out, when absorbing liquid did not had four partitions 12, the spray flow on absorption tower 1 and the discharge amount of 1 bottom liquid outlet 1.3 of absorption tower are controlled
Liquid product in absorption tower 1 is sent into absorbing liquid circulating slot 6 by balance, the liquid outlet 1.3, following in absorbing liquid circulating slot 6
Ring liquid introduce waste liquid device 17 handled, recycling, be eventually converted into sulfate and nitrate mixture, the present invention exists
In the reacting of absorbing liquid and flue gas, sprayed before this, after then liquid to be absorbed did not had air inlet 1.1, flue gas is passed through in absorbing liquid
It sprays again, and flue gas extends movement routine during uplink, and cooperates the agitation of agitator arm 26, so that flue gas and suction
It receives liquid to come into full contact with, extends soak time, thus to the NO in flue gasX、SO2Sufficiently removed.
In addition, closing flow control valve 18 and the first valve 19 when handling the dust stratification in ash handling equipment, the second valve is opened
20, it opens first motor 25 and dust cleaning brush 24 is driven to rotate brush dust, the end of dust cleaning brush 24 offsets with ceramic filter plate 23 can be clear
Except a large amount of dusts of 23 surface of ceramic filter plate accumulation, dust accretions is avoided to influence filtering, dust cleaning brush 24 can also clear up fume pipe
Dust stratification on road inner wall is swept the dust stratification fallen and is precipitated in funnel-form ash discharging hole 21, and is fallen into dust collecting box 22 by ash discharging hole 21.
The technique that desulphurization denitration is carried out using above-mentioned flue gas desulfurization and denitrification equipment, is included the following steps:
A, the flue gas that temperature is 160-180 DEG C after waste heat recycling first passes through ash handling equipment and carries out ash disposal processing, passes through ceramics
Filter plate 23 is filtered, ceramic filter plate 23 have the characteristics that ventilation it is obstructed ash, can by the particulate matter in flue gas completely with
Gas separation, the dust filtered out is gathered in the flue section between flow control valve 18 and the first valve 19, and big portion
Divide dirt accumulation on 23 surface of ceramic filter plate, to avoid the desulfurization and denitrification reaction of particulate matter influence flue gas；
B, ash disposal treated flue gas passes through the first temperature control equipment 3, and adjusting flue-gas temperature is 140 DEG C, and flue gas is led to
Enter and reacted in oxygen regulating device 2, promotes NOXIt is converted into NO2；
C, the flue gas after reacting with oxygen passes through second temperature control device 4, and adjusting flue-gas temperature is 115 DEG C, and flue gas is logical
It crosses air-introduced machine 5 and enters the progress of absorption tower 1 desulfurization and denitrification reaction from the air inlet 1.1 of 1 bottom of absorption tower；
D, the absorbing liquid in absorbing liquid circulating slot 6 is sprayed into absorption tower 1 by the spray tube 14 in absorption tower 1, is being sprayed
In, absorbing liquid forms multistage by the funnel-shaped hole 13 on first partition 9, second partition 10, third partition 11, the 4th partition 12
Spray, and cooperate the agitation of agitator arm 26, to the NO in flue gasX、SO2It is sufficiently removed, and is adsorbed by active carbon layer
Filtering is discharged, when absorbing liquid did not had the 4th partition 12 so that flue gas reaches discharge standard from 1 top gas outlet 1.2 of absorption tower
When, the discharge amount of the spray flow and 1 bottom liquid outlet 1.3 of absorption tower that control absorption tower 1 balances, and the liquid outlet 1.3 is by absorption tower 1
Interior liquid product is sent into absorbing liquid circulating slot 6；
E, circulation fluid in absorbing liquid circulating slot 6 introduce waste liquid device 17 handled, recycling, be eventually converted into
Sulfate and nitrate mixture.
Finally, it should be noted that the above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of skill in the art that it still can be right
Technical solution documented by foregoing embodiments is modified, or is replaced on an equal basis to part of technical characteristic；And this
It modifies or replaces, the spirit and model of technical solution of various embodiments of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (8)
1. a kind of equipment for low-temp desulfurization denitration in flue gas, which is characterized in that including ash handling equipment, oxygen regulating device
(2), absorption tower (1) and absorbing liquid circulating slot (6), the ash handling equipment, oxygen regulating device (2) and absorption tower (1) successively lead to
Cross flue (8) connection, the front end of the ash handling equipment connects gas inlet (7), the gas inlet (7) and ash handling equipment it
Between be equipped with flow control valve (18), equipped with the first temperature control equipment between the ash handling equipment and oxygen regulating device (2)
(3), second temperature control device (4) are equipped between the oxygen regulating device (2) and absorption tower (1), the second temperature control
Air-introduced machine (5) are equipped between device (4) processed and absorption tower (1), are set between first temperature control equipment (3) and ash handling equipment
Have the first valve (19), the absorbing liquid circulating slot (6) connect with absorption tower (1)；
The ash handling equipment includes the first motor (25) of dust cleaning brush (24), driving dust cleaning brush (24), dust collecting box (22) and ceramics
Filter plate (23), the horizontal flue section between flow control valve (18) and the first valve (19) of the dust cleaning brush (24)
Interior, the outer circumferential direction of the dust cleaning brush (24) and the inner wall of flue offset, and the ceramic filter plate (23) is arranged in dust cleaning brush
(24) between the first valve (19), the end and ceramic filter plate (23) of the dust cleaning brush (24) offset for removing ceramic mistake
The bottom of the dust on filter plate (23) surface, the flue section between the flow control valve (18) and the first valve (19) is provided with
The lower section of the ash discharging hole (21) being connected to dust collecting box (22), the ash discharging hole (21) is equipped with the second valve (20)；
It is provided with baffle assembly in the absorption tower (1), which includes first to be from bottom to top equidistantly staggered
Partition (9), second partition (10), third partition (11) and the 4th partition (12), the first partition (9), second partition (10),
Third partition (11), the 4th partition (12) etc. are big, the first partition (9), second partition (10), third partition (11), the 4th every
It is provided on plate (12) multiple funnel-shaped holes (13), the multiple funnel-shaped hole (13) is densely arranged on partition, described to interlock
Setting refers to that first partition (9) and third partition (11) are arranged in the same side of absorption tower (1), second partition (10) and the 4th
Partition (12) is arranged in absorption tower (1) and the opposite side of first partition (9), third partition (11), and second partition (10)
Front end is protruded between first partition (9) and third partition (11), and second partition (10) and the 4th are protruded into third partition (11) front end
Between partition (12)；
Bottom centre position in the absorption tower (1) is equipped with agitator arm (26), which passes through the second electricity
Machine (27) drives, and the top in the absorption tower (1) is equipped with spray tube (14), and the top of the spray tube (14) is equipped with filling adsorption
Layer (16), the spray tube (14) are connect by pipeline with absorbing liquid circulating slot (6), and the bottom of the absorption tower (1) is equipped with liquid
Mouth (1.3), the liquid outlet (1.3) are connected to by pipeline with the bottom of absorbing liquid circulating slot (6), and absorption tower is provided at the top of (1)
To discharge the gas outlet (1.2) of flue gas after purification, absorption tower (1) bottom and flue (8) junction are provided with air inlet
(1.1), first partition (9) setting is above air inlet (1.1).
2. a kind of equipment for low-temp desulfurization denitration in flue gas according to claim 1, which is characterized in that the funnel
The big opening end in shape hole (13) is towards at the top of absorption tower (1), and osculum end is towards absorption tower (1) bottom, and table on big opening end and partition
Face flushes, and osculum end is downwardly projected partition lower surface.
3. a kind of equipment for low-temp desulfurization denitration in flue gas according to claim 1, which is characterized in that the absorption
Liquid circulating slot (6) is also connected with waste liquid device (17).
4. a kind of equipment for low-temp desulfurization denitration in flue gas according to claim 1, which is characterized in that the ash discharge
Mouth (21) is funnel-shaped.
5. a kind of equipment for low-temp desulfurization denitration in flue gas according to claim 1, which is characterized in that described first
The distance between partition (9), second partition (10), third partition (11) and the 4th partition (12) are greater than zero, the first partition
(9), the length of second partition (10), third partition (11) and the 4th partition (12) is greater than the width of absorption tower (1) half.
6. a kind of equipment for low-temp desulfurization denitration in flue gas according to claim 1, which is characterized in that the spray
It manages (14) and is equipped with multiple spray heads (15), the spray head (15) and spray tube (14) are rotatablely connected.
7. a kind of equipment for low-temp desulfurization denitration in flue gas according to claim 1, which is characterized in that the filler
Adsorption layer (16) is active carbon layer.
8. using a kind of technique of the equipment progress desulphurization denitration for low-temp desulfurization denitration in flue gas described in claim 1,
It is characterized by comprising the following steps:
A, the flue gas that temperature is 160-180 DEG C after waste heat recycling first passes through ash handling equipment and carries out ash disposal processing；
B, ash disposal treated flue gas passes through the first temperature control equipment (3), and adjusting flue-gas temperature is 130-150 DEG C, by flue gas
It is passed through in oxygen regulating device (2) and is reacted, promote NOXIt is converted into NO2；
C, the flue gas after reacting with oxygen passes through second temperature control device (4), and adjusting flue-gas temperature is 110-130 DEG C, flue gas
Enter absorption tower (1) from the air inlet (1.1) of absorption tower (1) bottom by air-introduced machine (5) and carries out desulfurization and denitrification reaction；
D, the absorbing liquid in absorbing liquid circulating slot (6) is sprayed into absorption tower (1) by the spray tube (14) in absorption tower (1),
In spray, absorbing liquid is by the infundibulate on first partition (9), second partition (10), third partition (11), the 4th partition (12)
Hole (13) forms multi-stage spray, and cooperates the agitation of agitator arm (26), to the NO in flue gasX、SO2Sufficiently removed, and by
Filling adsorption layer (16) is absorbed and filter, so that flue gas reaches discharge standard, is arranged from absorption tower (1) top gas outlet (1.2)
Out, when absorbing liquid did not had the 4th partition (12), the spray flow and absorption tower (1) bottom liquid outlet (1.3) of absorption tower (1) are controlled
Discharge amount balance, the liquid outlet (1.3) by absorption tower (1) liquid product be sent into absorbing liquid circulating slot (6) in；
E, circulation fluid in absorbing liquid circulating slot (6) introduce waste liquid device (17) handled, recycling, be eventually converted into
Sulfate and nitrate mixture.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710884080.5A CN109550379A (en) | 2017-09-26 | 2017-09-26 | A kind of equipment and its technique for low-temp desulfurization denitration in flue gas |
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| CN201710884080.5A CN109550379A (en) | 2017-09-26 | 2017-09-26 | A kind of equipment and its technique for low-temp desulfurization denitration in flue gas |
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Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6036756A (en) * | 1998-01-13 | 2000-03-14 | The Babcock & Wilcox Company | Retrofit of a center inlet type scrubber with absorption/gas distribution tray to improve gas-liquid contact in the absorption zone |
| CN104437056A (en) * | 2014-11-26 | 2015-03-25 | 广西南宁华国环境科技有限公司 | Flue gas desulfurization device |
| CN104826351A (en) * | 2015-05-11 | 2015-08-12 | 珠海格力电器股份有限公司 | Falling film evaporator, liquid distributor and liquid equalizing plate thereof |
| CN105169866A (en) * | 2015-08-31 | 2015-12-23 | 北京大学 | Microporous ceramic dedusting method used for treatment of high-temperature flue gas in desulfuration of chlorine leaching residues |
| CN105363340A (en) * | 2015-06-09 | 2016-03-02 | 洛阳安德路石化设备有限公司 | Activated carbon dry-method smoke purifying method and device capable of achieving simultaneous desulfurization and denitrification |
| CN205323521U (en) * | 2015-12-25 | 2016-06-22 | 常州三高生物技术工程设备有限公司 | Microbial fermentation vent gas treatment system in |
| CN105709551A (en) * | 2016-03-09 | 2016-06-29 | 周紫阳 | Integrated treating device for smoke and dust in industrial waste gas |
| CN105964117A (en) * | 2016-06-23 | 2016-09-28 | 宁波科新化工工程技术有限公司 | Integrated desulfurization and denitrification process method for coke oven smoke |
| CN205948090U (en) * | 2016-05-02 | 2017-02-15 | 江苏轻石科技有限公司 | Rubbish flue gas deodorization treater |
| CN106731601A (en) * | 2016-12-22 | 2017-05-31 | 青岛大学 | A kind of solwution method flue gas desulfurization and denitrification integrated apparatus |
-
2017
- 2017-09-26 CN CN201710884080.5A patent/CN109550379A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6036756A (en) * | 1998-01-13 | 2000-03-14 | The Babcock & Wilcox Company | Retrofit of a center inlet type scrubber with absorption/gas distribution tray to improve gas-liquid contact in the absorption zone |
| CN104437056A (en) * | 2014-11-26 | 2015-03-25 | 广西南宁华国环境科技有限公司 | Flue gas desulfurization device |
| CN104826351A (en) * | 2015-05-11 | 2015-08-12 | 珠海格力电器股份有限公司 | Falling film evaporator, liquid distributor and liquid equalizing plate thereof |
| CN105363340A (en) * | 2015-06-09 | 2016-03-02 | 洛阳安德路石化设备有限公司 | Activated carbon dry-method smoke purifying method and device capable of achieving simultaneous desulfurization and denitrification |
| CN105169866A (en) * | 2015-08-31 | 2015-12-23 | 北京大学 | Microporous ceramic dedusting method used for treatment of high-temperature flue gas in desulfuration of chlorine leaching residues |
| CN205323521U (en) * | 2015-12-25 | 2016-06-22 | 常州三高生物技术工程设备有限公司 | Microbial fermentation vent gas treatment system in |
| CN105709551A (en) * | 2016-03-09 | 2016-06-29 | 周紫阳 | Integrated treating device for smoke and dust in industrial waste gas |
| CN205948090U (en) * | 2016-05-02 | 2017-02-15 | 江苏轻石科技有限公司 | Rubbish flue gas deodorization treater |
| CN105964117A (en) * | 2016-06-23 | 2016-09-28 | 宁波科新化工工程技术有限公司 | Integrated desulfurization and denitrification process method for coke oven smoke |
| CN106731601A (en) * | 2016-12-22 | 2017-05-31 | 青岛大学 | A kind of solwution method flue gas desulfurization and denitrification integrated apparatus |
Non-Patent Citations (3)
| Title |
|---|
| 强亦忠等: "《精馏及其在核燃料后处理废液回收中的应用》", 28 February 1981, 原子能出版社 * |
| 环境保护部环境工程评估中心: "《环境影响评价技术方法》", 31 March 2014, 中国环境出版社 * |
| 田冬梅: "《工业通风与除尘》", 28 February 2017, 煤炭工业出版社 * |
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Address after: 337022 no.1-127, zone B, Xiangdong Industrial Park, Pingxiang City, Jiangxi Province Applicant after: PINGXIANG PUTIAN HI-TECH INDUSTRIAL Co.,Ltd. Address before: 337019 Xiangdong ceramic industry base, Pingxiang City, Jiangxi Province Applicant before: PINGXIANG PUTIAN HI-TECH INDUSTRIAL Co.,Ltd. |
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