CN109550376A - A kind of equipment and its technique for flue gas desulfurization and denitrification - Google Patents
A kind of equipment and its technique for flue gas desulfurization and denitrification Download PDFInfo
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- CN109550376A CN109550376A CN201710884078.8A CN201710884078A CN109550376A CN 109550376 A CN109550376 A CN 109550376A CN 201710884078 A CN201710884078 A CN 201710884078A CN 109550376 A CN109550376 A CN 109550376A
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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
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
- B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
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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
- B01D53/34—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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Abstract
The present invention relates to a kind of equipment for flue gas desulfurization and denitrification, 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 movement routine of the flue gas in absorption tower, prolong The long reaction time carries out abundant desulfurization and denitrification reaction 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 a kind of equipment and its work for flue gas desulfurization and denitrification
Skill.
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, flue gas are contacted with absorbing liquid and are not enough, and the reaction time falls short of, 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 the equipment for flue gas desulfurization and denitrification of abundant desulfurization and denitrification reaction is carried out to the flue gas after separation
And its technique.
The technical scheme of the invention to solve the technical problem is: a kind of equipment for flue gas desulfurization and denitrification,
Including ash handling equipment, oxygen regulating device, absorption tower and absorbing liquid circulating slot, the ash handling equipment, oxygen regulating device and suction
It receives tower and passes sequentially through flue connection, the front end of the ash handling equipment connects gas inlet, the gas inlet and ash handling equipment
Between be equipped with flow control valve, between the ash handling equipment and oxygen regulating device be equipped with the first temperature control equipment, the oxygen
It is equipped with second temperature control device between gas control device and absorption tower, is set between the second temperature control device and absorption tower
There is air-introduced machine, the first valve, the absorbing liquid circulating slot and suction are equipped between first temperature control equipment and ash handling equipment
Receive tower connection；
The ash handling equipment includes hair dryer, the air jet pipe connecting with hair dryer, dust collecting box, filter screen and ceramic filter
The top of the flue section between flow control valve and the first valve is arranged in plate, the air jet pipe, which passes through pipe
Road is connected with the hair dryer being arranged in outside flue, the 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, and the filter screen is arranged in ash discharge
The surface of mouth, the area of the filter screen and the cross-sectional area of flue are identical, and the ceramic filter plate is arranged in filter screen
In flue between the first 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, the first partition and
Four partitions are fixedly mounted in absorption tower, and the second partition and third partition are slidably connected with inner wall of tower is absorbed, in absorption tower
Wall is equipped with the guide rail for second partition, the sliding of third partition, and the outside on the absorption tower is equipped with driving second partition and moves horizontally
The first cylinder and the second cylinder for moving horizontally of driving third partition；
The top on the absorption tower is equipped with spray tube, and the top of the spray tube is equipped with filling adsorption layer, which passes through
Pipeline is connect with absorbing liquid circulating slot, and the bottom on the absorption tower is equipped with liquid outlet, which is followed by pipeline and absorbing liquid
The bottom of annular groove is connected to, and the gas outlet to discharge flue gas after purification, absorb the bottom of the tower and fume pipe are provided at the top of absorption tower
Road junction 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 distance at the top of the air jet pipe to flue is greater than zero, which is circumferentially with multiple sprays
Stomata, the distance at the top of air jet pipe to flue are greater than zero, so that can when dust stratification in air jet pipe liquid honing flue
It is more comprehensive to clear up, prevent dust stratification.
Further, microseism device is equipped at the center of the filter screen, the ash on filter screen can be shaken off, is convenient for by microseism device
Deashing.
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 the above-mentioned equipment for flue gas desulfurization and denitrification, 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, in flue gas
NOX、SO2It is sufficiently removed, and is absorbed and filter by filling adsorption layer, so that flue gas reaches discharge standard, from absorption tower
The discharge of top gas outlet, when absorbing liquid did not had four partitions, the first cylinder of starting, the second cylinder drive second partition, third
Partition moves horizontally, to play agitaion to absorbing liquid, improves the mobile activity of flue gas, and control the spray on absorption tower
Leaching amount and the discharge amount of absorb the bottom of the tower liquid outlet balance, which send the liquid product in absorption tower into absorbing liquid and recycle
In slot；
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 carries out flue gas dual by setting ash handling equipment
Filtering first carries out by-pass filtration to flue gas by filter screen, filters out the biggish dust of particle, then carry out second level by ceramic filter plate
Filtering, ceramic filter plate have the characteristics that the obstructed ash of ventilation, can separate the particulate matter in flue gas with gas completely, to keep away
Exempting from particulate matter influences the desulfurization and denitrification reaction of flue gas, in addition, the setting of oxygen regulating device, so that NO in flue gasXIt is converted into
NO2, convenient for the absorption of absorbing liquid, thus desulphurization denitration as sufficient as possible, finally, by the way that partition group is arranged in absorption tower
Part, the baffle assembly include the first partition being from bottom to top equidistantly staggered, second partition, third partition and the 4th every
Plate forms bypass channel, extends the movement routine of flue gas, and cooperate funnel-shaped hole densely arranged on partition, so that absorbing liquid
It when spraying on partition, can be passed through from funnel-shaped hole, as the diminution in aperture forms thread, and cooperate first partition,
Two partitions, third partition, the 4th partition are from bottom to top staggered and multiple funnel-shaped holes are densely arranged on partition, can
To form multi-stage spray, 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, and the first cylinder, the second cylinder is cooperated to drive second partition, third partition
It moves horizontally, to play agitaion to absorbing liquid, the mobile activity of flue gas is improved, so that absorbing liquid sufficiently connects with flue gas
Touching, thus to the NO in flue gasX、SO2It is sufficiently removed, reaches discharge standard.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the structural schematic diagram under partition moving condition of the present invention；
Fig. 3 is the top view of partition of the present invention；
Fig. 4 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 filter screens, 25 hair dryers, 26 air jet pipes, 27 microseism devices, 28 first cylinders, 29 second cylinders.
Specific embodiment
Present invention will be further explained below with reference to the attached drawings and specific embodiments.
As shown in Figs 1-4, a kind of equipment for flue gas desulfurization and denitrification, including ash handling equipment, oxygen regulating device 2, suction
Tower 1 and absorbing liquid circulating slot 6 are received, the ash handling equipment, oxygen regulating device 2 and absorption tower 1 pass sequentially through the company of flue 8
Logical, the front end of the ash handling equipment connects gas inlet 7, and flow control valve 18 is equipped between the gas inlet 7 and ash handling equipment,
The first temperature control equipment 3, the oxygen regulating device 2 and absorption are equipped between the ash handling equipment and oxygen regulating device 2
It is equipped with second temperature control device 4 between tower 1, air-introduced machine 5, institute are equipped between the second temperature control device 4 and absorption tower 1
It states and is equipped with the first valve 19 between the first temperature control equipment 3 and ash handling equipment, the absorbing liquid circulating slot 6 connects with absorption tower 1
It connects；
The ash handling equipment include hair dryer 25, the air jet pipe being connect with hair dryer 25 26, dust collecting box 22, filter screen 24 and
The top of the flue section between flow control valve 18 and the first valve 19 is arranged in ceramic filter plate 23, the air jet pipe 26
Portion, the air jet pipe 26 are connected by pipeline with the hair dryer 25 being arranged in outside flue, the flow control valve 18 and the
The bottom of flue section between one valve 19 is provided with the ash discharging hole 21 being connected to dust collecting box 22, and the lower section of the ash discharging hole 21 is set
There is the second valve 20, the surface of ash discharging hole 21 is arranged in the filter screen 24, area and the flue 8 of the filter screen 24
Cross-sectional area is identical, and the ceramic filter plate 23 is arranged in the flue between filter screen 24 and the first valve 19；
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, and the first partition 9 and the 4th partition 12 are fixedly mounted on absorption tower 1
Interior, the second partition 10 and third partition 11 are slidably connected with 1 inner wall of absorption tower, 1 inner wall of absorption tower be equipped with for second every
The guide rail that plate 10, third partition 11 slide, the outside on the absorption tower 1 are equipped with the first cylinder that driving second partition 10 moves horizontally
28 the second cylinders 29 moved horizontally with driving third partition 11；
The top on 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
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, and the liquid outlet 1.3 is logical
Pipeline is crossed to be connected to 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 distance at the air jet pipe 26 to 8 top of flue is greater than zero, which is circumferentially with multiple fumaroles,
The distance at air jet pipe 26 to the top of flue 8 is greater than zero, so that can when dust stratification in 26 liquid honing flue of air jet pipe
It is more comprehensive to clear up, prevent dust stratification.
Microseism device 27 is equipped at the center of the filter screen 24, the ash on filter screen 24 can be shaken off, is convenient for by microseism device 27
Deashing.
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 first passes through filter screen 24 and carries out by-pass filtration, filters out the biggish dust of partial size, which, which can accumulate, is attached to 24 table of filter screen
Face carries out secondary filtration using ceramic filter plate 23, and ceramic filter plate 23 has the characteristics that ventilation is obstructed grey, can will be in flue gas
Particulate matter separated completely with gas, the dust filtered out is gathered in the flue gas between flow control valve 18 and the first valve 19
In duct section, to avoid the desulfurization and denitrification reaction of particulate matter influence flue gas；
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 cooperate the first cylinder 28, the second cylinder 29 driving second partition 10, third partition 11 mobile back and forth horizontally, and leak on partition
The osculum end in bucket shape hole 13 is downwardly projected partition lower surface, can play agitaion to absorbing liquid in reciprocating movement, mention
The mobile activity of high flue gas, so that absorbing liquid comes into full contact with flue gas, thus to the NO in flue gasX、SO2Sufficiently removed,
And absorbed and filter by active carbon layer, so that flue gas reaches discharge standard, it is discharged from 1 top gas outlet 1.2 of absorption tower, works as suction
When receipts liquid did not had four partitions 12, the discharge amount of the spray flow and 1 bottom liquid outlet 1.3 of absorption tower that control absorption tower 1 is balanced, should
Liquid product in absorption tower 1 is sent into absorbing liquid circulating slot 6 by liquid outlet 1.3, and the circulation fluid in absorbing liquid circulating slot 6 introduces
Waste liquid device 17 handled, recycling, is eventually converted into sulfate and nitrate mixture, the present invention absorbing liquid with
In the reaction of flue gas, sprayed before this, after then liquid to be absorbed did not had air inlet 1.1, flue gas be passed through in absorbing liquid to spray again, and
And flue gas extends movement routine during uplink, so that flue gas comes into full contact with absorbing liquid, extends soak time, thus right
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, hair dryer 25 is opened, the dust stratification in flue is cleared up by air jet pipe 26,25 air quantity of hair dryer is adjusted, will accumulate
Ash is blown off to ash discharging hole 21, and the dust stratification on filter screen 24 shakes to shake off ash to ash discharging hole 21 by microseism device 27, the filtering
The setting of net 24 is right above ash discharging hole 21, and convenient for shaking off the ash on filter screen 24 to ash discharging hole 21, dust stratification passes through ash discharging hole
21 fall into dust collecting box 22.
The technique that desulphurization denitration is carried out using the above-mentioned equipment for flue gas desulfurization and denitrification, 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, first passes through
Strainer 24 carries out by-pass filtration, filters out the biggish dust of partial size, which, which can accumulate, is attached to 24 surface of filter screen, using ceramics
Filter plate 23 carries out secondary filtration, and ceramic filter plate 23 has the characteristics that the obstructed ash of ventilation, can be complete by the particulate matter in flue gas
It is separated entirely with 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, to the NO in flue gasX、SO2It is sufficiently removed, and is absorbed and filter by active carbon layer, so that flue gas reaches discharge mark
Standard is discharged from 1 top gas outlet 1.2 of absorption tower, when absorbing liquid did not had four partitions 12, starts the first cylinder 28, the second gas
Cylinder 29 drives second partition 10, third partition 11 to move horizontally, to play agitaion to absorbing liquid, improves the movement of flue gas
Activity, and control the spray flow on absorption tower 1 and the discharge amount balance of 1 bottom liquid outlet 1.3 of absorption tower, the liquid outlet 1.3
Liquid product in absorption tower 1 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 (10)
1. a kind of equipment for flue gas desulfurization and denitrification, which is characterized in that including ash handling equipment, oxygen regulating device (2), absorb
Tower (1) and absorbing liquid circulating slot (6), the ash handling equipment, oxygen regulating device (2) and absorption tower (1) pass sequentially through fume pipe
The front end of road (8) connection, the ash handling equipment connects gas inlet (7), and stream is equipped between the gas inlet (7) and ash handling equipment
Adjustable valve (18) is equipped with the first temperature control equipment (3) between the ash handling equipment and oxygen regulating device (2), the oxygen
Between gas control device (2) and absorption tower (1) be equipped with second temperature control device (4), the second temperature control device (4) with
Air-introduced machine (5) are equipped between absorption tower (1), the first valve is equipped between first temperature control equipment (3) and ash handling equipment
(19), the absorbing liquid circulating slot (6) connect with absorption tower (1)；
Air jet pipe (26), the dust collecting box (22), filter screen that the ash handling equipment includes hair dryer (25), connect with hair dryer (25)
(24) and ceramic filter plate (23), the cigarette that the air jet pipe (26) is arranged between flow control valve (18) and the first valve (19)
The top of feed channel section, which is connected by pipeline with the hair dryer (25) being arranged in outside flue, described
The bottom of flue section between flow control valve (18) and the first valve (19) is provided with the ash discharge being connected to dust collecting box (22)
The lower section of mouthful (21), the ash discharging hole (21) is equipped with the second valve (20), filter screen (24) setting ash discharging hole (21) just
The area of top, the filter screen (24) is identical as the cross-sectional area of flue (8), and the ceramic filter plate (23) is arranged in mistake
In flue between strainer (24) and the first valve (19)；
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), the first partition (9) and the 4th partition (12) are fixedly mounted in absorption tower (1), the second partition
(10) be slidably connected with third partition (11) with absorption tower (1) inner wall, absorption tower (1) inner wall be equipped with for second partition (10),
The guide rail of third partition (11) sliding, the outside on the absorption tower (1) are equipped with the first gas that driving second partition (10) moves horizontally
The second cylinder (29) that cylinder (28) and driving third partition (11) move horizontally；
The top of 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), should
Spray tube (14) is connect by pipeline with absorbing liquid circulating slot (6), and the bottom of the absorption tower (1) is equipped with liquid outlet (1.3), should
Liquid outlet (1.3) is connected to by pipeline with the bottom of absorbing liquid circulating slot (6), is provided at the top of absorption tower (1) net to discharge
The gas outlet (1.2) of flue gas after change, absorption tower (1) bottom and flue (8) junction are provided with air inlet (1.1), and described the
One partition (9) setting is above air inlet (1.1).
2. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the funnel-shaped hole
(13) big opening end is towards absorption tower (1) top, and osculum end is towards absorption tower (1) bottom, and big opening end and partition upper surface are neat
Flat, osculum end is downwardly projected partition lower surface.
3. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the absorbing liquid circulation
Slot (6) is also connected with waste liquid device (17).
4. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the air jet pipe (26)
Distance at the top of to flue (8) is greater than zero, which is circumferentially with multiple fumaroles.
5. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the filter screen (24)
Center at be equipped with microseism device (27).
6. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the ash discharging hole (21)
It is funnel-shaped.
7. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the first partition
(9), the distance between second partition (10), third partition (11) and the 4th partition (12) are greater than zero, the first partition (9), the
The length of two partitions (10), third partition (11) and the 4th partition (12) is greater than the width of absorption tower (1) half.
8. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the spray tube (14)
It is equipped with multiple spray heads (15), the spray head (15) and spray tube (14) are rotatablely connected.
9. a kind of equipment for flue gas desulfurization and denitrification according to claim 1, which is characterized in that the filling adsorption layer
It (16) is active carbon layer.
10. using a kind of technique of the equipment progress desulphurization denitration for flue gas desulfurization and denitrification described in claim 1, feature
It is, includes 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, to the NO in flue gasX、SO2It is sufficiently removed, and adsorbed by filling adsorption layer (16)
Filter is discharged, when absorbing liquid did not had the 4th partition so that flue gas reaches discharge standard from absorption tower (1) top gas outlet (1.2)
(12) when, starting the first cylinder (28), the second cylinder (29) driving second partition (10), third partition (11) are moved horizontally, from
And agitaion is played to absorbing liquid, the mobile activity of flue gas is improved, and control spray flow and the absorption tower on absorption tower (1)
(1) liquid product in absorption tower (1) is sent into absorbing liquid by the discharge amount balance of bottom liquid outlet (1.3), the liquid outlet (1.3)
In 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.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884078.8A CN109550376A (en) | 2017-09-26 | 2017-09-26 | A kind of equipment and its technique for flue gas desulfurization and denitrification |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710884078.8A CN109550376A (en) | 2017-09-26 | 2017-09-26 | A kind of equipment and its technique for flue gas desulfurization and denitrification |
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| CN201710884078.8A Pending CN109550376A (en) | 2017-09-26 | 2017-09-26 | A kind of equipment and its technique for flue gas desulfurization and denitrification |
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| CN (1) | CN109550376A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115397544A (en) * | 2020-04-16 | 2022-11-25 | 许炫美 | Air purification device and air purification method adopting artificial intelligence |
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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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Application publication date: 20190402 |