CN109092059A - A kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device and its ash removal method - Google Patents
A kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device and its ash removal method Download PDFInfo
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- CN109092059A CN109092059A CN201810811548.2A CN201810811548A CN109092059A CN 109092059 A CN109092059 A CN 109092059A CN 201810811548 A CN201810811548 A CN 201810811548A CN 109092059 A CN109092059 A CN 109092059A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/90—Injecting reactants
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/86—Catalytic processes
- B01D53/8621—Removing nitrogen compounds
- B01D53/8625—Nitrogen oxides
- B01D53/8631—Processes characterised by a specific device
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
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Abstract
The invention discloses a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal devices, comprising: ammonia-spraying grid, for spraying the device of ammonia；Ash hopper device, the ash hopper device are arranged in the lower section of ammonia-spraying grid and are connected to ammonia-spraying grid；Rapping apparatus is provided on the ash hopper device；Circulation canal, for realizing the channel of flue gas connection circulation；The circulation canal passes through control valve respectively and circulation in the flue gas under state of pressure keeping and flue dust is connected to and formed with ammonia-spraying grid and ash hopper device.Also disclose the method using denitration of glass furnace fume ammonia-spraying grid online ash removal device online ash removal.The denitration of glass furnace fume ammonia-spraying grid online ash removal device, it is recycled in environmental protection operation due to realizing in flue gas, it ensure that the stabilization of furnace pressure, realize the effective deashing of online ammonia-spraying grid, the risk of dust deposit in flue is evaded, it realizes whole environment friendly system to run steadily in the long term, greatly reduces production and maintenance cost.
Description
Technical field
The present invention relates to float glass environment friendly system denitrating technique technical field, more specifically to a kind of glass furnaces
Denitrating flue gas ammonia-spraying grid online ash removal device and its ash removal method.
Background technique
Float glass environment friendly system denitrating technique uses selective catalytic reduction (SCR) at present, and reaction generation is filling
Have in the reactor of catalyst, reduction reaction occurs under the effect of the catalyst for the ammonia of flue gas and penetrating, realizes oxynitrides
Removing.In the long-term use, melting furnaces flue gas bring flue dust gradually accumulates in flue, be easy to cause to spray ammonia lattice
The covering of grid；Find that two wires dust stratification at ammonia-spraying grid is more than the 70% of flue cross section in routine maintenance, ammonia-spraying grid quilt completely
Dust stratification is buried, and system resistance superelevation and spray ammonia effect is caused to be deteriorated.
In normal environmental protection operation, because of flue temperature height, manual cleaning can not be carried out to these flue dusts, this is online clear
Apparatus for ash solves to realize the target of online ammonia-spraying grid deashing in the case where guaranteeing that furnace pressure is stablized.
Chinese patent literature (day for announcing: on January 4th, 2017, notification number: CN106268318A) discloses a kind of glass furnace
Kiln gas integral denitration desulfurization dust-removing technique equipment and technique.A kind of synchronous denitration desulfurization and dedusting of the glass furnace fume proposed
Be disposed with from front to back in the waste heat boiler of process equipment along flue gas flow direction first-class heat exchanger, medium temperature Benitration reactor,
Secondary heat exchanger and multi-stage heat exchanger；Low-temperature denitration desulfurization and dedusting reaction tower has the tower body for being divided into king-tower, secondary tower；King-tower
Reducing agent evaporator is provided in the gas inlet of side；The low-temperature catalyzed reaction bed of setting in secondary tower.The present invention has both saved one
Secondary property cost of investment and occupied area, while reducing operating cost again, totally realize the target of cleaning improvement and zero-emission.
Chinese patent literature (day for announcing: on October 13rd, 2017, notification number: CN107243253A) discloses a kind of glass
Melting furnaces flue gas multiple pollutant combined apparatus, including at gas inlet be arranged cooler, flue gas by bag filter by
Middle low-temperature SCR reactor smoke, the bag filter include dust collector ash hopper, deduster middle housing and air-purifying chamber, institute
It is provided with deflector I in the dust collector ash hopper stated, filter bag and card are provided on the deduster middle housing, described is cold
But device is shell and tube air-cooled cooler, and the outlet of cooler is connected to the dust collector ash hopper of bag filter, cooler and dedusting
Absorbent cast feeder is equipped between device ash bucket, the absorbent cast feeder includes absorbent powder cabin and sorbent injection device,
On the outlet conduit of cooler in the next setting deduster air inlet adjustment valve of sorbent injection device, the air-purifying chamber
It is provided with pulse ash remover, ammonia-spraying grid, flue gas flow equalizing device I, the flue gas flow equalizing device I is connected to middle low-temperature SCR reaction
Device it is upper.
Although above-mentioned technical proposal also has the function of dedusting, itself otherwise can not realize online ash removal or deashing
Process can not realize that furnace pressure is stable or structure excessively complexity causes deashing at high cost, be unfavorable for being widely applied.
Summary of the invention
The present invention be in order to solve existing float glass environment friendly system denitrating technique in the long-term use, can not be right
These flue dusts carry out manual cleaning, and melting furnaces flue gas bring flue dust gradually accumulates in flue, be easy to cause to spray ammonia lattice
The covering of grid；The problem of ammonia-spraying grid is buried by dust stratification, and environment friendly system resistance superelevation and spray ammonia effect is caused to be deteriorated, and provide one
Kind denitration of glass furnace fume ammonia-spraying grid online ash removal device and its ash removal method are guaranteeing that furnace pressure is steady in environmental protection operation
In the case where fixed, online ammonia-spraying grid deashing is realized, evade dust deposit in flue risk, realize that whole environment friendly system is transported steadily in the long term
Row.
The present invention realizes that technical solution used by its first technical purpose is: a kind of denitration of glass furnace fume spray ammonia
Grid online ash removal device, comprising:
Ammonia-spraying grid, for spraying the device of ammonia；
Ash hopper device, the ash hopper device are arranged in the lower section of ammonia-spraying grid and are connected to ammonia-spraying grid；The ash bucket dress
It sets and is provided with Rapping apparatus；
Circulation canal, for realizing the channel of flue gas connection circulation；The circulation canal passes through control valve and spray ammonia lattice respectively
Grid and ash hopper device are connected to and are formed circulation in the flue gas under state of pressure keeping and flue dust.
The denitration of glass furnace fume ammonia-spraying grid online ash removal device, by being arranged one under the flue at ammonia-spraying grid
Ash hopper device installs circulation canal under ash hopper device, realizes through control valve control realization flue, ash hopper device, circulation canal
Circulation in the connection of middle entirety flue gas.Online ash removal can be realized during float glass environment friendly system denitration carries out, pass through
Opening controlling valve opens circulation in flue gas, and the light ash of drying falls into circulation by the Rapping apparatus shaking on ash hopper device in flue
In channel, after ash under shaking, closing control valve terminates circulation in flue gas, flue dust is discharged later.The glass furnace cigarette
Qi exhaustion nitre ammonia-spraying grid online ash removal device recycles due to realizing in flue gas in environmental protection operation, ensure that the stabilization of furnace pressure, real
Show the effective deashing of online ammonia-spraying grid, evaded the risk of dust deposit in flue, has realized whole environment friendly system and run steadily in the long term,
Greatly reduce production and maintenance cost.
Preferably, the circulation canal includes interconnected ash discharging pipe road and connection pipeline；The control valve
Include: ash discharging pipe road upper end setting control its connect with ash hopper device it is lower ash electro-magnetic valve, ash discharging pipe road lower end set
The circulation electric magnet valve of the upper end setting of the control weight plate turnover ash discharge valve of soot emissions, connection pipeline set and connection pipeline
The lower end of the Hand-operated butterfly valve of lower end setting, the ash discharging pipe road and connection pipeline is respectively communicated with a collection apparatus for ash.Circulation canal
It is provided with ash discharging pipe road and connection pipeline, and control valve is set up separately to the different location set on ash discharging pipe road and cross over pipe road,
The different control functions of control valve are realized, to ensure that the application online ash removal device is effectively run, and entire deashing
Process does not influence environmentally friendly operation, can accomplish that pressure maintaining is stablized, ash-removal effect is good.
Preferably, the ash discharging pipe road include it is interconnected lead grey section and lower grey section, it is described that lead grey section downward
It is obliquely installed, the angle led between the parallax and vertical line of grey section is less than or equal to 30 degree；The lower grey section is vertical
It is arranged and is connected to collection apparatus for ash；The upper end for leading grey section is arranged in close to ash hopper device exit in the lower grey electro-magnetic valve；
The weight plate turnover ash discharge valve is arranged at the ash discharging hole of lower grey section.Grey section and lower grey section are led in the setting of ash discharging pipe road, lead grey section
It is obliquely installed the whereabouts for being conducive to cigarette ash.
Preferably, the connection pipeline includes lower grey circulation line, upper circular tube road and dust removing tube, the lower ash
Circulation line is inclined at the upper end on ash discharging pipe road upwards and is connected to the top of dust removing tube, the circulation electric magnet valve setting
On lower grey circulation line；The upper circular tube road is provided with bending section and vertical section, the bending section in bending structure
It is connected to ammonia-spraying grid, the vertical section is integrally connected to dust removing tube；The dust removing tube is vertically arranged, the Hand-operated butterfly valve
The lower end of dust removing tube is set.The lower grey circulation line being obliquely installed and upper circular tube road are to guarantee that flue gas is effectively interior and follow
Ring, the setting of dust removing tube are to carry out fugitive dust processing during ash discharge.
Preferably, the angle between the acclivitous parallax of lower ash circulation line and vertical line is less than or equal to
45 degree.
Preferably, the lower section of ammonia-spraying grid ammonia gas outlet side, the ash bucket is arranged in the ash hopper device
Device is in funnel structure, and the grey head device is connected to ammonia-spraying grid bottom by grid mouth structure, the grid mouth knot
The area of structure accounts for the one third of ammonia-spraying grid bottom area to half.Ash hopper device is arranged in ammonia-spraying grid ammonia outlet
The lower section of mouth side, rather than the bottom of full entire ammonia-spraying grid is set, the needs of deashing can be met, and can save into
This, cigarette ash, which is generally assembled, stays in ammonia-spraying grid ammonia gas outlet side, and therefore, setting most can effective deashing in gas outlet side.
Preferably, the Rapping apparatus is the multiple pneumatic hammers being evenly arranged on ash hopper device.Rapping apparatus is set as more
A pneumatic hammer can shake ash hopper device by remotely controlling, and realize deashing.
Preferably, being evenly equipped with several spray ammonia holes on spray ammonia pipe in ammonia-spraying grid, the spray ammonia pipe is perpendicular to ammonia
Airintake direction setting, the spray ammonia pipe are provided with airintake direction pipe group and outgassing direction pipe group along ammonia airintake direction.This Shen
Please in ammonia-spraying grid control airintake direction and outgassing direction grouping setting spray ammonia pipe, guarantee spray ammonia effect while, can
It realizes and reduces collection ash, enhance the effect of online ash removal.
Preferably, the length of the airintake direction Guan Zuzhong spray ammonia pipe tapers off along ammonia airintake direction ecto-entad
Structure setting, along airintake direction, portion is in be incremented by structure setting to the length of the outgassing direction Guan Zuzhong spray ammonia pipe from inside to outside,
The spray ammonia pipe of the airintake direction Guan Zuzhong and the spray ammonia pipe of outgassing direction Guan Zuzhong are in staggeredly on perpendicular to airintake direction
Structure setting.It into the above structure of gas direction pipe group and outgassing direction pipe group, that is, ensure that uniform, the validity of spray ammonia, protect
Flue gas and the sufficient reduction reaction of ammonia have been demonstrate,proved, meanwhile, also reduce the dust stratification inside ammonia-spraying grid.
The present invention realizes that technical solution used by its second technical purpose is: a kind of to utilize a kind of glass furnace fume
The method of denitration ammonia-spraying grid online ash removal device online ash removal, comprising the following steps:
Step 1) environment-friendlydenitration denitration system operates normally；
Step 2 sets online ash removal interval time；
In the step 3) online ash removal time, lower grey electro-magnetic valve and circulation electric magnet valve are opened in long-range control, while starting shaking
Device, dry light ash is fallen into ash discharging pipe road by the Rapping apparatus shaking on ash hopper device in flue, starts flue gas and cigarette
Circulation in road ash, at this point, due to carrying out interior circulation, furnace pressure is stablized；
Step 4) controls the shaking time of Rapping apparatus, and under shaking after grey 1~2 minute ash, it is electronic that lower ash is closed in long-range control
Magnet valve and circulation electric magnet valve terminate flue gas recirculation；
Flue dust is discharged into collection ash and places inside by the weight plate turnover ash discharge valve that step 5) opens ash discharging pipe road lower end later, in ash discharge
The Hand-operated butterfly valve opened on dust removing tube in the process carries out fugitive dust processing；Complete an online ash removal process.
The beneficial effects of the present invention are: guaranteeing that furnace pressure is stablized in environment friendly system normal operation, online spray ammonia lattice are realized
The target of grid deashing evades dust deposit in flue risk, realizes that whole environment friendly system is run steadily in the long term.
Detailed description of the invention
Fig. 1 is a kind of structural schematic diagram of denitration of glass furnace fume ammonia-spraying grid online ash removal device of the present invention；
Fig. 2 is a kind of structural schematic diagram of ammonia-spraying grid and ash hopper device connectivity structure in the present invention；
Fig. 3 is the side view of ammonia-spraying grid and ash hopper device connectivity structure in Fig. 2；
Fig. 4 is a kind of structural schematic diagram of ammonia-spraying grid in the present invention；
Fig. 5 is a kind of structural schematic diagram of airintake direction pipe group and the setting of outgassing direction pipe group in the present invention；
Fig. 6 is a kind of structural schematic diagram that ammonia pipe is sprayed in the present invention；
Fig. 7 is a kind of structural schematic diagram of outgassing direction pipe group in the present invention；
Fig. 8 is a kind of schematic diagram of application structure of ammonia-spraying grid online ash removal device of the present invention；
In figure: 1, ammonia-spraying grid, 2, ash hopper device, 3, Rapping apparatus, 4, circulation canal, 5, ash discharging pipe road, 6, connection pipeline, 7,
Lower ash electro-magnetic valve, 8, weight plate turnover ash discharge valve, 9, circulation electric magnet valve, 10, Hand-operated butterfly valve, 11, collection apparatus for ash, 12, lead ash
Section, 13, lower grey section, 14, lower grey circulation line, 15, upper circular tube road, 16, dust removing tube, 17, bending section, 18, vertical section, 19,
Grid mouth structure, 20, spray ammonia pipe, 21, spray ammonia hole, 22, airintake direction pipe group, 23, outgassing direction pipe group, 24, flue.
Specific embodiment
Technical solution of the present invention is described in further detail below by specific embodiment and in conjunction with attached drawing.
Embodiment 1:
In Fig. 1, embodiment shown in Fig. 2, a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device, comprising:
Ammonia-spraying grid 1, for spraying the device of ammonia；
Ash hopper device 2, ash hopper device 2 are arranged in the lower section of ammonia-spraying grid 1 and are connected to ammonia-spraying grid 1；It is arranged on ash hopper device 2
There is Rapping apparatus 3；
Circulation canal 4, for realizing the channel of flue gas connection circulation；Circulation canal 4 respectively by control valve and ammonia-spraying grid 1 and
Ash hopper device 2 is connected to and is formed circulation in the flue gas under state of pressure keeping and flue dust.
Circulation canal 4 includes interconnected ash discharging pipe road 5 and connection pipeline 6；Control valve includes: the upper of ash discharging pipe road 5
The control of end setting its connect with ash hopper device 2 lower grey electro-magnetic valve 7, ash discharging pipe road 5 the control cigarette ash of lower end setting arrange
The lower end setting of the circulation electric magnet valve 9 and connection pipeline 6 of the upper end setting of the weight plate turnover ash discharge valve 8, connection pipeline 6 put
The lower end of Hand-operated butterfly valve 10, ash discharging pipe road 5 and connection pipeline 6 is respectively communicated with a collection apparatus for ash 11.
Grey section 12 and lower grey section 13 are led including what is be interconnected in ash discharging pipe road 5, lead grey section 12 and tilt down setting, lead grey section
Angle between 12 parallax and vertical line is less than or equal to 30 degree；Lower ash section 13 is vertically arranged and is connected to collection apparatus for ash 11；
The upper end for leading grey section is arranged in close to 2 exit of ash hopper device in lower ash electro-magnetic valve 7；Weight plate turnover ash discharge valve 8 is arranged in lower ash
At the ash discharging hole of section 13.
Connection pipeline 6 includes lower grey circulation line 14, upper circular tube road 15 and dust removing tube 16, and lower ash circulation line 14 is upwards
It is inclined at the upper end on ash discharging pipe road 5 and is connected to the top of dust removing tube 16, the setting of circulation electric magnet valve 9 is in lower grey circulation line
On 14；Upper circular tube road 15 is provided with bending section 17 and vertical section 18 in bending structure, and bending section 17 is connected to ammonia-spraying grid 1, hangs down
Straight section 18 is connected to 16 one of dust removing tube；Dust removing tube 16 is vertically arranged, and the lower end of dust removing tube 16 is arranged in Hand-operated butterfly valve 10.
Angle between the lower ash acclivitous parallax of circulation line 14 and vertical line is less than or equal to 45 degree.
The lower section (see figure 3) of 1 ammonia gas outlet side of ammonia-spraying grid is arranged in ash hopper device 2, and ash hopper device 2 is in infundibular ganglion
Structure, grey head device 2 are connected to (see figure 2) by grid mouth structure 19 with 1 bottom of ammonia-spraying grid, and the area of grid mouth structure 19 accounts for spray
The one third of 1 bottom area of ammonia grid is to half.The area of grid mouth structure 19 accounts in ash hopper device 2 in the present embodiment
The one third of 1 bottom area of ammonia-spraying grid.Grid mouth structure 19 is made using 16 millimeters of diameter of round steel, round steel and circle
Spacing interval 100mm between steel, and the setting direction of round steel is parallel with airintake direction.
Rapping apparatus 3 is the multiple pneumatic hammers being evenly arranged on ash hopper device.
Several spray ammonia holes 21 are evenly equipped on spray ammonia pipe 20 in ammonia-spraying grid 1, the diameter in spray ammonia hole 21 is 10mm, and is sprayed
(see figure 5) is arranged towards outgassing direction unilateral side on spray ammonia pipe in ammonia hole, and spray ammonia pipe 20 is arranged perpendicular to ammonia airintake direction, sprays ammonia
Ammonia airintake direction is provided with airintake direction pipe group 22 to pipe 20 and outgassing direction pipe group 23(is shown in Fig. 4).
The length that ammonia pipe 20 is sprayed in airintake direction pipe group 22 is long along the ammonia airintake direction ecto-entad structure setting that tapers off
Pipe, middle pipe and short tube, and end setting of the spray ammonia hole on ammonia pipe along spray ammonia pipe is sprayed, the spray ammonia on long tube, middle pipe and short tube
Hole is just in staged setting, i.e., it is imperforate section on middle pipe that spray ammonia hole on short tube is corresponding, and the spray ammonia hole pair on middle pipe
The imperforate section on long tube answered；Along airintake direction, portion is in be incremented by knot to the length of spray ammonia pipe 20 from inside to outside in outgassing direction pipe group 23
Structure is provided with short tube, middle pipe and long tube, and sprays end setting of the spray ammonia hole on ammonia pipe along spray ammonia pipe, long tube, middle pipe and short
Spray ammonia hole on pipe is just in staged setting, i.e., it is middle tube end without area under control that spray ammonia hole on long tube is corresponding, and middle pipe
On the corresponding short tube end in spray ammonia hole without area under control (see figure 7)；Into in gas direction pipe group 22 spray ammonia pipe 20 and outlet side
Spray ammonia pipe 20 into pipe group 23 is in structure setting (see figure 6) of interlocking on perpendicular to airintake direction, i.e., into gas direction pipe group
The setting gap of the spray ammonia pipe 20 in the corresponding outgassing direction pipe group 23 of spray ammonia pipe 20 in 22.
A method of utilizing denitration of glass furnace fume ammonia-spraying grid online ash removal device online ash removal, including following step
It is rapid:
Step 1) environment-friendlydenitration denitration system operates normally；
Step 2 sets online ash removal interval time；
In the step 3) online ash removal time, lower grey electro-magnetic valve and circulation electric magnet valve are opened in long-range control, while starting shaking
Device, dry light ash is fallen into ash discharging pipe road by the Rapping apparatus shaking on ash hopper device in flue, starts flue gas and cigarette
Circulation in road ash, at this point, due to carrying out interior circulation, furnace pressure is stablized；
Step 4) controls the shaking time of Rapping apparatus, and under shaking after grey 1~2 minute ash, it is electronic that lower ash is closed in long-range control
Magnet valve and circulation electric magnet valve terminate flue gas recirculation；
Flue dust is discharged into collection ash and places inside by the weight plate turnover ash discharge valve that step 5) opens ash discharging pipe road lower end later, in ash discharge
The Hand-operated butterfly valve opened on dust removing tube in the process carries out fugitive dust processing；Complete an online ash removal process.
As shown in figure 8, the denitration of glass furnace fume ammonia-spraying grid online ash removal device, passes through the cigarette at ammonia-spraying grid
One ash hopper device is set under road, circulation canal is installed under ash hopper device, is realized through lower grey electro-magnetic valve 7, circulation electric magnet valve 9
Control is realized in flue 24, ash hopper device 2, ash discharging pipe road 5 and connection pipeline 6 and is recycled in the connection of whole flue gas.It can be floating
Method glass environment friendly system denitration realizes online ash removal during carrying out, and opens lower grey electro-magnetic valve 7, circulation electric magnet valve 9, flue
The light ash of middle drying falls into ash discharging pipe road 5 by the Rapping apparatus shaking on ash hopper device, grey under shaking in 1 minute or so
Afterwards, lower grey electro-magnetic valve 7, circulation electric magnet valve 9 are closed, terminates circulation in flue gas, opens the weight of 5 bottom of ash discharging pipe road later
Flue dust is discharged into collection apparatus for ash 11 by plate turnover ash discharge valve 8, and the Hand-operated butterfly valve 10 on the dust removing tube of one side can be opened during ash discharge
Carry out fugitive dust processing.
The denitration of glass furnace fume ammonia-spraying grid online ash removal device follows in environmental protection operation due to realizing in flue gas
Ring ensure that the stabilization of furnace pressure, realizes the effective deashing of online ammonia-spraying grid, has evaded the risk of dust deposit in flue, realizes whole
Body environment friendly system is run steadily in the long term, greatly reduces production and maintenance cost.
Claims (10)
1. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device, characterized by comprising:
Ammonia-spraying grid (1), for spraying the device of ammonia；
Ash hopper device (2), the ash hopper device (2) are arranged the lower section in ammonia-spraying grid (1) and are connected to ammonia-spraying grid (1)；
Rapping apparatus (3) are provided on the ash hopper device (2)；
Circulation canal (4), for realizing the channel of flue gas connection circulation；The circulation canal (4) respectively by control valve with
Ammonia-spraying grid (1) and ash hopper device (2) are connected to and are formed circulation in the flue gas under state of pressure keeping and flue dust.
2. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device according to claim 1, it is characterised in that:
The circulation canal (4) includes interconnected ash discharging pipe road (5) and connection pipeline (6)；The ash discharging pipe road (5) and connection
The lower end on siphunculus road (6) is respectively communicated with a collection apparatus for ash (11)；The control valve includes: the upper end setting on ash discharging pipe road (5)
Control its connect with ash hopper device (2) lower grey electro-magnetic valve (7), ash discharging pipe road (5) lower end setting control cigarette ash row
Under the circulation electric magnet valve (9) and connection pipeline (6) of the upper end setting of the weight plate turnover ash discharge valve (8), connection pipeline (6) put
Hold the Hand-operated butterfly valve (10) of setting.
3. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device according to claim 2, it is characterised in that:
The ash discharging pipe road (5) include it is interconnected lead grey section (12) and lower grey section (13), the grey section (12) of leading dips down
Tiltedly it is arranged, the angle between the parallax and vertical line for leading grey section (12) is less than or equal to 30 degree；The lower grey section
(13) it is vertically arranged and is connected to collection apparatus for ash (11)；The lower grey electro-magnetic valve (7) is arranged in the upper end for leading grey section (12)
Close to ash hopper device (2) exit；Weight plate turnover ash discharge valve (8) setting is at the ash discharging hole of lower grey section (13).
4. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device according to claim 2, it is characterised in that:
The connection pipeline (6) includes lower grey circulation line (14), upper circular tube road (15) and dust removing tube (16), and the lower ash follows
Endless tube road (14) is inclined at the upper end on ash discharging pipe road (5) and is connected to the top of dust removing tube (16) upwards, the circulation electricity
Dynamic magnet valve (9) setting is on lower grey circulation line (14)；The upper circular tube road (15) is provided with bending section in bending structure
(17) and vertical section (18), the bending section (17) are connected to ammonia-spraying grid (1), the vertical section (18) and dust removing tube (16)
One connection；The dust removing tube (16) is vertically arranged, and the Hand-operated butterfly valve (10) is arranged in the lower end of dust removing tube (16).
5. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device according to claim 4, it is characterised in that:
Angle between the acclivitous parallax of lower ash circulation line (14) and vertical line is less than or equal to 45 degree.
6. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device according to claim 1, it is characterised in that:
Ash hopper device (2) setting is in the lower section of ammonia-spraying grid (1) ammonia gas outlet side, and the ash hopper device (2) is in leakage
Bucket structure, the grey head device (2) are connected to ammonia-spraying grid (1) bottom by grid mouth structure (19), the grid mouth
The area of structure (19) accounts for the one third of ammonia-spraying grid (1) bottom area to half.
7. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device according to claim 1, it is characterised in that:
The Rapping apparatus (3) is the multiple pneumatic hammers being evenly arranged on ash hopper device.
8. according to claim 1 to a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device described in 7 any one,
It is characterized by: being evenly equipped with several spray ammonia holes (21) on spray ammonia pipe (20) in ammonia-spraying grid (1), the spray ammonia pipe (20) hangs down
Directly it is arranged in ammonia airintake direction, the spray ammonia pipe (20) is provided with airintake direction pipe group (22) along ammonia airintake direction and goes out
Gas direction pipe group (23).
9. a kind of denitration of glass furnace fume ammonia-spraying grid online ash removal device according to claim 8, it is characterised in that:
The length of spray ammonia pipe tapers off structure setting along ammonia airintake direction ecto-entad in the airintake direction pipe group (22), described
Outgassing direction pipe group (23) in spray ammonia pipe length along airintake direction from inside to outside portion be in be incremented by structure setting, the air inlet
The spray ammonia pipe in spray ammonia pipe and outgassing direction pipe group (23) in direction pipe group (22) is on perpendicular to airintake direction in staggeredly knot
Structure setting.
10. a kind of using denitration of glass furnace fume ammonia-spraying grid online ash removal device online ash removal described in claim 1
Method, it is characterised in that the following steps are included:
Step 1) environment-friendlydenitration denitration system operates normally；
Step 2 sets online ash removal interval time；
In the step 3) online ash removal time, lower grey electro-magnetic valve and circulation electric magnet valve are opened in long-range control, while starting shaking
Device, dry light ash is fallen into ash discharging pipe road by the Rapping apparatus shaking on ash hopper device in flue, starts flue gas and cigarette
Circulation in road ash, at this point, due to carrying out interior circulation, furnace pressure is stablized；
Step 4) controls the shaking time of Rapping apparatus, and under shaking after grey 1~2 minute ash, it is electronic that lower ash is closed in long-range control
Magnet valve and circulation electric magnet valve terminate flue gas recirculation；
Flue dust is discharged into collection ash and places inside by the weight plate turnover ash discharge valve that step 5) opens ash discharging pipe road lower end later, in ash discharge
The Hand-operated butterfly valve opened on dust removing tube in the process carries out fugitive dust processing；Complete an online ash removal process.
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| CN201810811548.2A CN109092059B (en) | 2018-07-23 | 2018-07-23 | Online ash removal device and method for denitration ammonia-spraying grid of glass kiln flue gas |
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