CN109550375A - Desulphurization denitration equipment and its technique - Google Patents
Desulphurization denitration equipment and its technique Download PDFInfo
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- CN109550375A CN109550375A CN201710884077.3A CN201710884077A CN109550375A CN 109550375 A CN109550375 A CN 109550375A CN 201710884077 A CN201710884077 A CN 201710884077A CN 109550375 A CN109550375 A CN 109550375A
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- partition
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- flue gas
- absorbing liquid
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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
- 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
- B01D53/34—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
- 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 desulphurization denitration equipment, 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, extend the reaction time, it is right Flue gas carries out abundant desulfurization and denitrification reaction, so that flue gas reaches discharge standard.
Description
Technical field
The present invention relates to flue gases purification field more particularly to desulphurization denitration equipment 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, 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 desulphurization denitration equipment and its technique of abundant desulfurization and denitrification reaction are carried out to the flue gas after separation.
The technical scheme of the invention to solve the technical problem is: desulphurization denitration equipment, including ash handling equipment, oxygen
Gas control device, absorption tower and absorbing liquid circulating slot, the ash handling equipment, oxygen regulating device and absorption tower pass sequentially through flue gas
The front end of pipeline connection, the ash handling equipment connects gas inlet, and flow is equipped between the gas inlet and ash handling equipment and is adjusted
Valve is equipped with the first temperature control equipment, the oxygen regulating device and absorption between the ash handling equipment and oxygen regulating device
It is equipped with second temperature control device between tower, is equipped with air-introduced machine between the second temperature control device and absorption tower, described the
The first valve is equipped between one temperature control equipment and ash handling equipment, the absorbing liquid circulating slot is connect with absorption tower；
The ash handling equipment includes the motor of dust cleaning brush, driving dust cleaning brush, dust collecting box and ceramic filter plate, the dust cleaning brush
In the horizontal flue section between flow control valve and the first valve, the outer circumferential direction of the dust cleaning brush and the inner wall of flue
It offsets, the ceramic filter plate is arranged between dust cleaning brush and the first valve, end and the ceramic filter plate phase of the dust cleaning brush
It is of use in the dust for removing ceramic filter plate surface, the bottom of the flue section between the flow control valve and the first valve
It is provided with the ash discharging hole being connected to dust collecting box, 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, 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 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 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, 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, and cooperates the first cylinder, the second cylinder driving second partition, the
Three partitions move horizontally, to play agitaion to absorbing liquid, the mobile activity of flue gas are improved, so that absorbing liquid and flue gas
It comes into full contact with, 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 dust cleaning brushs, 25 motors, 26 first cylinders, 27 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, desulphurization denitration equipment, including ash handling equipment, oxygen regulating device 2, absorption tower 1 and absorbing liquid are followed
Annular groove 6, the ash handling equipment, oxygen regulating device 2 and absorption tower 1 pass sequentially through flue 8 and are connected to, the ash handling equipment
Front end connects gas inlet 7, and flow control valve 18, the ash handling equipment and oxygen are equipped between the gas inlet 7 and ash handling equipment
It is equipped with the first temperature control equipment 3 between gas control device 2, the second temperature is equipped between the oxygen regulating device 2 and absorption tower 1
Control device 4 is spent, air-introduced machine 5, the first temperature control dress are equipped between the second temperature control device 4 and absorption tower 1
It sets and is equipped with the first valve 19 between 3 and ash handling equipment, the absorbing liquid circulating slot 6 is connect with absorption tower 1；
The ash handling equipment includes dust cleaning brush 24, the motor 25 for 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 periphery of the dust cleaning brush 24
It offsets to the inner wall with flue, the ceramic filter plate 23 is arranged between dust cleaning brush 24 and the first valve 19, described clear
The dust that the end of ash brush 24 and ceramic filter plate 23 offset for removing 23 surface of ceramic filter plate, the flow control valve 18
The bottom of flue section between the first valve 19 is provided with the ash discharging hole 21 being connected to dust collecting box 22, under the ash discharging hole 21
Side 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, 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
26 the second cylinders 27 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 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 cooperate the first cylinder 26, the second cylinder 27 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 NOX, SO in flue gas2It carries out sufficiently de-
It removes, and is absorbed and filter by active carbon layer, so that flue gas reaches discharge standard, is discharged from 1 top gas outlet 1.2 of absorption tower,
When absorbing 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 flat
Liquid product in absorption tower 1 is sent into absorbing liquid circulating slot 6 by weighing apparatus, the liquid outlet 1.3, the circulation in absorbing liquid circulating slot 6
Liquid introduce waste liquid device 17 handled, recycling, be eventually converted into sulfate and nitrate mixture, the present invention is inhaling
It receives in the reacting of liquid and flue gas, sprayed before this, after then liquid to be absorbed did not had air inlet 1.1, flue gas is to be passed through in absorbing liquid again
Spray, and flue gas extends movement routine during uplink, so that flue gas comes into full contact with absorbing liquid, when extending absorption
Between, 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 motor 25 and dust cleaning brush 24 is driven to rotate brush dust, the end of dust cleaning brush 24 and ceramic filter plate 23 offset and can remove pottery
A large amount of dusts of 23 surface of porcelain filter plate accumulation, avoid dust accretions from influencing filtering, and dust cleaning brush 24 can also be cleared up in flue
Dust stratification on 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 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, 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, 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 26, the second gas
Cylinder 27 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 (8)
1. desulphurization denitration equipment, 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) pass sequentially through flue (8) with absorption tower (1) and are connected to, described
The front end of ash handling equipment connects gas inlet (7), is equipped with flow control valve (18) between the gas inlet (7) and ash handling equipment,
The first temperature control equipment (3) are equipped between the ash handling equipment and oxygen regulating device (2), the oxygen regulating device (2)
Second temperature control device (4) are equipped between absorption tower (1), between the second temperature control device (4) and absorption tower (1)
Equipped with air-introduced machine (5), the first valve (19) are equipped between first temperature control equipment (3) and ash handling equipment, the absorption
Liquid circulating slot (6) is connect with absorption tower (1)；
The ash handling equipment includes the motor (25) of dust cleaning brush (24), driving dust cleaning brush (24), dust collecting box (22) and ceramic filter
Plate (23) should in the horizontal flue section between flow control valve (18) and the first valve (19) of the dust cleaning brush (24)
The outer circumferential direction of dust cleaning brush (24) and the inner wall of flue offset, and the ceramic filter plate (23) setting is in dust cleaning brush (24) and the
Between one valve (19), the end and ceramic filter plate (23) of the dust cleaning brush (24) offset for removing ceramic filter plate (23)
The bottom of the dust on surface, the flue section between the flow control valve (18) and the first valve (19) is provided with and dust collecting box
(22) lower section of the ash discharging hole (21) being connected to, 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), 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 (27) that cylinder (26) 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. desulphurization denitration equipment according to claim 1, which is characterized in that the big opening end direction of the funnel-shaped hole (13)
At the top of absorption tower (1), osculum end is towards absorption tower (1) bottom, and big opening end is flushed with partition upper surface, and osculum end is downwardly projected
Partition lower surface.
3. desulphurization denitration equipment according to claim 1, which is characterized in that the absorbing liquid circulating slot (6) is also connected with useless
Liquid device (17).
4. desulphurization denitration equipment according to claim 1, which is characterized in that the ash discharging hole (21) is funnel-shaped.
5. desulphurization denitration equipment according to claim 1, which is characterized in that the first partition (9), second partition
(10), the distance between third partition (11) and the 4th partition (12) are greater than zero, the first partition (9), second partition (10), the
The length of three partitions (11) and the 4th partition (12) is greater than the width of absorption tower (1) half.
6. desulphurization denitration equipment according to claim 1, which is characterized in that the spray tube (14) is equipped with multiple sprays
Head (15), the spray head (15) and spray tube (14) are rotatablely connected.
7. desulphurization denitration equipment according to claim 1, which is characterized in that the filling adsorption layer (16) is active carbon
Layer.
8. the technique for carrying out desulphurization denitration using desulphurization denitration equipment described in claim 1, which is characterized in that including walking as follows
It is rapid:
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 (26), the second cylinder (27) 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 |
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| CN201710884077.3A CN109550375A (en) | 2017-09-26 | 2017-09-26 | Desulphurization denitration equipment and its technique |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710884077.3A CN109550375A (en) | 2017-09-26 | 2017-09-26 | Desulphurization denitration equipment and its technique |
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| CN110652840A (en) * | 2019-10-10 | 2020-01-07 | 邢二江 | Alkali liquor absorption tower with filler backwashing device |
| CN111266003A (en) * | 2020-02-26 | 2020-06-12 | 华电电力科学研究院有限公司 | Reciprocating stirring type SCR reactor flue gas flow equalizing device and working method thereof |
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| CN111266003A (en) * | 2020-02-26 | 2020-06-12 | 华电电力科学研究院有限公司 | Reciprocating stirring type SCR reactor flue gas flow equalizing device and working method thereof |
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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 |