CN108465360A - A kind of NO_x Reduction by Effective spray ammonia system - Google Patents
A kind of NO_x Reduction by Effective spray ammonia system Download PDFInfo
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- CN108465360A CN108465360A CN201810306584.3A CN201810306584A CN108465360A CN 108465360 A CN108465360 A CN 108465360A CN 201810306584 A CN201810306584 A CN 201810306584A CN 108465360 A CN108465360 A CN 108465360A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/76—Gas phase processes, e.g. by using aerosols
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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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
- B01D53/46—Removing components of defined structure
- B01D53/72—Organic compounds not provided for in groups B01D53/48 - B01D53/70, e.g. hydrocarbons
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/20—Reductants
- B01D2251/206—Ammonium compounds
- B01D2251/2062—Ammonia
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
Abstract
A kind of NO_x Reduction by Effective spray ammonia system, which includes adsorption tower, Analytic Tower, ammonia mixing arrangement, the first activated carbon conveying device, the second activated carbon conveying device, the first conveyance conduit, the second conveyance conduit.The side of adsorption tower is equipped with smoke inlet.The other side of adsorption tower is equipped with exhanst gas outlet.Smoke inlet is equipped with the first ammonia-gas spraying device.The lower part of adsorption tower inner cavity is equipped with the second ammonia-gas spraying device.First conveyance conduit connects mixed gas outlet and the first ammonia-gas spraying device.Second conveyance conduit connects mixed gas outlet and the second ammonia-gas spraying device.First activated carbon conveyer is used to connect the feed inlet of the discharge port and Analytic Tower of adsorption tower.Feed inlet of the second activated carbon conveyer for the discharge port and adsorption tower of Analytic Tower.Spray ammonia system provided by the invention sprays into a small amount of ammonia at adsorption tower lower part, bed rear portion, can increase denitration efficiency, while improving the utilization rate of ammonia, realize the efficient utilization of activated carbon.
Description
Technical field
The present invention relates to activated carbon method smoke eliminator, which belongs to a kind of activity suitable for air contaminant treatment
Charcoal method smoke eliminator is related to field of environment protection particularly for the NO_x Reduction by Effective ammonia-gas spraying device of the purification of sintering flue gas.
Background technology
For industrial smoke, the especially sintering device flue gas of steel and iron industry, using including activated carbon adsorber and parsing
The desulphurization and denitration device and technique of tower are more satisfactory.De- including activated carbon adsorber and Analytic Tower (or regenerator)
In sulphur, denitrification apparatus, activated carbon adsorber is used for from sintering flue gas or exhaust gas (the especially sintering cigarette of the sintering machine of steel and iron industry
Gas) absorption includes oxysulfide, nitrogen oxides He pollutant including bioxin, and hot recycling of the Analytic Tower for activated carbon.
Activated carbon desulfurization has desulfurization degree height, denitration can be achieved at the same time, Tuo bioxin, dedusting, do not generate waste water and dregs
The advantages that, it is extremely promising flue gas purifying method.Activated carbon can regenerate at high temperature, when temperature is higher than 350 DEG C, absorption
(sulfur dioxide is solved for the pollutants such as oxysulfide, nitrogen oxides, bioxin on the activated carbon generation fast resolving or decomposition
Analysis, nitrogen oxides is He bioxin is decomposed).And with the raising of temperature, the reproduction speed of activated carbon is further speeded up, regeneration
Time shortens, and preferably regenerating active carbon temperature is approximately equal to 430 DEG C in general control Analytic Tower, therefore, ideal parsing temperature
It is for example in 390-450 DEG C of range, more preferably in 400-440 DEG C of range to spend (or regeneration temperature).
The effect of Analytic Tower is by the SO of activated carbon adsorption2It releases, while in 400 DEG C or more of temperature and centainly
80% or more , bioxin decomposable asymmetric choice net under residence time, activated carbon recycles again after cooling, screening.The SO released2It can
Sulphuric acid etc., the communicated device of activated carbon after parsing are sent to adsorption tower and are re-used to absorption SO2And NOXDeng.
The NO in adsorption tower and Analytic TowerXSCR, SNCR etc. occurs with ammonia to react, to remove NOX.Dust is passing through absorption
It is tightly held by activated carbon when tower, the vibrating screen in Analytic Tower bottom end is detached, and is that active carbon powder sends to ash cellar under sieving, then may be used
It is sent to blast furnace or sintering is used as fuel.
The out of stock spray ammonia process of traditional activated carbon is as shown in fig. 1.Full smoke inlet is injected directly into ammonia：SO in flue gas2、
NH3Sulfuric acid or sulfate are formed after being contacted with activated carbon in activated carbon surface or gap, causes activated carbon to be poisoned, denitration activity
It reduces.With the progress of desulfurization and denitrification reaction, the activated carbon on tower top, especially with the active carbon bed front end of smoke contacts,
Sulfuric acid or sulfate are formed on tower top, when gradually moving to tower body lower part, the amount of activated charcoal to lose denitration activity substantially.
Therefore, the ammonia sprayed into the prior art, the SO being largely tightly held by activated carbon2It reacts away, forms H2SO4Or NH4HSO4, denitration effect
Fruit unobvious, NH3Utilization ratio is low.
To solve the above-mentioned problems, ammonia only is sprayed on the top of active carbon bed, lower part does not spray ammonia, leads to active lower in this way
The part ammonia that charcoal only relies on the adsorption storage at bed top carries out denitration, although reducing ammonia spraying amount, denitration efficiency also compared with
It is low.
In addition, dust is tightly held by activated carbon when passing through adsorption tower, the vibrating screen in Analytic Tower bottom end is detached, under sieving
Ash cellar is sent to for active carbon powder, the qualified activated carbon that is considered as staying in sieve top recycles.Currently used mesh form
For square hole, length of side a requires to determine according to screening, generally 1.2mm or so.However, being for similarly sizedThe activated carbon of drug sheet is sieved using this sieve, also will be regarded as certified products.Tablet shaped activated carbon is resistance to
Grind compressive resistance it is very low, into flue gas purification system after readily become fragment, on the one hand cause flue gas purification system due to
Active carbon bed is since powder causes resistance big more, to increase system operation expense；On the other hand activated carbon is also increased
High-temp combustion risk, at the same in exiting flue gas dust mainly by the part fine particle and flue gas that are carried in raw flue gas through making a living
Property the stylish entrainment of charcoal bed activated carbon powdered carbon composition, active carbon bed powder more also result in exhanst gas outlet dust increase, shadow
Surrounding enviroment are rung, atmosphere pollution is caused.
In addition, the activated carbon discharge device of the prior art includes round roller batcher and feed rotary valve, as shown in Figure 8.
For round roller batcher, in the work course, activated carbon acts on round roller feed by gravity
It moves down under the control of machine, the different rotating speed of round roller batcher determines the movement speed of activated carbon, the discharge of round roller batcher
Activated carbon, which enters to enter in conveying equipment after rotatory feeder valve discharging, to be recycled, and the main function of rotatory feeder valve is in discharge
While keep adsorption tower sealing, so that the pernicious gas in adsorption tower is not leaked into air.
Due to containing certain vapor and dust in flue gas, activated carbon will produce a small amount of bond now in adsorption process
As forming block feed opening being blocked, as shown in Figure 9.If feed opening block it is serious, activated carbon can not continuous moving, cause
Activated carbon adsorption is saturated and loses clean-up effect, or even since activated carbon accumulation of heat leads to active carbon bed high temperature, there are larger
Security risk.The method handled at present be system-down after manually remove block.In addition, round roller batcher is in process of production
Failure happens occasionally, such as：Material the problems such as being unable to control when material leakage situation when flue gas pressures change, parking.In addition round roller
The quantity more (as long as there are one breaking down, entire large-scale plant must stop work) of batcher, cost is high, Maintenance and Repair are difficult,
Therefore certain limitation is brought to the development of activated carbon technology.
Secondly, it for the feed rotary valve of the prior art, has the following problems：It is this kind of for desulphurization denitration activated carbon
On the other hand the conveying of friable particle realizes the lossless fortune of material using rotary valve on the one hand in order to ensure the air-tightness of tower body
It is defeated, but if the rotation due to blade in rotary valve transmission process causes pumped (conveying) medium to be sheared, referring to attached drawing 8, can cause
The increase of system operation expense.Shearing phenomenon simultaneously can cause valve body wear, air-tightness to be deteriorated, and service life reduces.Especially
In feed inlet heap full with substance, rotational valve core, blade and valve casing are more obvious to the shear action of pumped (conveying) medium.For usually having
For the large-scale adsorption tower for having 20 meters or so height, round roller batcher or rotary valve break down in process of production, for work
Continuously running for skill causes huge loss, because having loaded several tons of activated carbon in adsorption tower, manual demolition is with repair or again
Newly install it is extremely difficult, caused by shut-down influence and loss be difficult to imagine.
Invention content
For problems of the prior art, the present invention provides a kind of NO_x Reduction by Effective and sprays ammonia system, adsorption tower lower part,
Bed rear portion sprays into a small amount of ammonia, can increase denitration efficiency, while improving the utilization rate of ammonia, realize the efficient of activated carbon
It utilizes.
The first embodiment according to the present invention provides a kind of NO_x Reduction by Effective spray ammonia system.
A kind of NO_x Reduction by Effective spray ammonia system, which includes adsorption tower, Analytic Tower, ammonia mixing arrangement, the first activated carbon
Conveying device, the second activated carbon conveying device, the first conveyance conduit, the second conveyance conduit.The side of adsorption tower enters equipped with flue gas
Mouthful.The other side of adsorption tower is equipped with exhanst gas outlet.Smoke inlet is equipped with the first ammonia-gas spraying device.The lower part of adsorption tower inner cavity is equipped with the
Two ammonia-gas spraying devices.Ammonia mixing arrangement includes ammonia entrance, air intake, mixed gas outlet.The connection of first conveyance conduit is mixed
Close gas vent and the first ammonia-gas spraying device.Second conveyance conduit connects mixed gas outlet and the second ammonia-gas spraying device.Ammonia entrance
It is connect with ammonia conveyance conduit.Air intake connect with airflow pipe or is communicated with air.First activated carbon conveyer
The feed inlet of discharge port and Analytic Tower for connecting adsorption tower.Second activated carbon conveyer is used to connect the discharge port of Analytic Tower
With the feed inlet of adsorption tower.
Preferably, smoke inlet downstream is flue.The flue in smoke inlet downstream is divided into two layers.Respectively on flue
Portion, flue lower part.First ammonia-gas spraying device is arranged in flue top.
Preferably, being equipped with the second spray ammonia chamber in adsorption tower.In the vertical direction, the second spray ammonia chamber is located at adsorption tower
Interior lower part.Preferably, in the horizontal direction, the second spray ammonia chamber is close to exhanst gas outlet side.
Preferably, the side wall of the second spray ammonia chamber is porous plate.The setting of second ammonia-gas spraying device is in the second spray ammonia chamber.
Preferably, in the vertical direction, the height of the second spray ammonia chamber is concordant with flue lower roof, alternatively, second
The top for spraying ammonia chamber is less than the top of flue lower part.
Preferably, the first conveyance conduit is equipped with the first control valve.
Preferably, the second conveyance conduit is equipped with the second control valve.
Preferably, the second conveyance conduit is the branch that the first conveyance conduit separates.One end of second conveyance conduit connects
The other end of first conveyance conduit, the second conveyance conduit connects the second ammonia-gas spraying device.
In the present invention, the ammonia spraying amount of the second ammonia-gas spraying device is the 10-60% of the first ammonia-gas spraying device ammonia spraying amount, preferably
20-50%, more preferably 25-40%.
In the present invention, the mixed gas after ammonia mixing arrangement is delivered to by two-way in adsorption tower.The first via
Mixed gas is delivered to by the first conveyance conduit at the first ammonia-gas spraying device at smoke inlet, and ammonia is sprayed at former smoke inlet.
This part ammonia primarily enters adsorption tower upper layer, is reacted with the activated carbon on adsorption tower upper layer, increases processing oxysulfide, nitrogen oxidation
The effect of the pollutants such as object, bioxin.Second tunnel mixed gas is delivered to adsorption tower inner cavity lower part by the second conveyance conduit
At second ammonia-gas spraying device, ammonia is sprayed in adsorption tower lower part, directly injection is in adsorption tower.This part ammonia fully enters under adsorption tower
Layer (preferably enters active carbon layer of the adsorption tower close to smoke outlet), is reacted with the activated carbon of adsorption tower lower layer, at increase
Manage the effect of the pollutants such as oxysulfide, nitrogen oxides, bioxin.
In the present invention, " connection " of the feed inlet of the discharge port and another equipment of an equipment refers to being set by conveying
The material branch mode that the both ends of standby (such as conveyer or pipeline) are realized.For example, unloaded from the discharge port of an equipment
Material is transported to the feed inlet of (entrance) another equipment by conveying equipment.Conveying equipment described here includes but unlimited
In：Conveyer or pipeline.
In the present invention, vertical direction refers to the short transverse of adsorption tower, that is, in adsorption tower activated carbon flowing side
To.Horizontal direction refer to perpendicular to absorption tower height degree direction, that is, in adsorption tower flue gas lateral flow direction.
In the present invention, the second spray ammonia chamber is located in the inner cavity chamber of adsorption tower.Second spray ammonia chamber is close to exhanst gas outlet
Side refers to the distance that the distance of the second spray ammonia chamber separable flue gas entrance is more than the second spray ammonia chamber separable flue gas outlet.
In the present invention, it refers to that the second spray ammonia chamber is located at suction that the height of the second spray ammonia chamber is concordant with flue lower roof
The top of the lower part of attached tower, the second spray ammonia chamber is identical as the height of the top of flue lower part in the vertical direction.Can also be,
In the vertical direction, the top of the second spray ammonia chamber is less than flue lower roof position.In general, the top of the second spray ammonia chamber
Less than flue lower roof 1-100cm, preferably 10-90cm, more preferably 30-70cm.
In the present invention, the first control valve controls the flow of mixed gas in the first conveyance conduit, that is to say, that control the
The ammonia spraying amount of one ammonia-gas spraying device；Second control valve controls the flow of mixed gas in the second conveyance conduit, that is to say, that control the
The ammonia spraying amount of two ammonia-gas spraying devices.
Preferably, in the bottom of each material room of adsorption tower tool, there are one discharge round rollers.
Preferably, there are one or more blowdown rotary valves in the blanking bin of adsorption tower or Lower Hold.
In all system for desulfuration and denitration of the application, generally, make in the lower section of the bottom discharge mouth of Analytic Tower or downstream
With vibrating screen or multistage or multi-layered type vibrating screen (or making multi-stage screening machine) equipped with sieve.
In order to avoid retention of the activated carbon on sieve of drug sheet, the application is designed with rectangle sieve pore or strip
The sieve of shape sieve pore.The sieve can install the active carbon particle for filtering out the needs for meeting desulfuring and denitrifying apparatus on the vibrating.
It is preferred, therefore, that a kind of sieve with rectangle sieve pore or strip sieve pore is provided, the rectangle sieve pore
Length L >=3D, the width a=0.65h-0.95h (preferably 0.7h-0.9h, more preferable 0.73h-0.85h) of rectangle sieve pore,
Middle D is the diameter of the circular cross section for the activated carbon cylinder to be retained on sieve, and h is to be retained on sieve
The minimum value of granular active carbon cylinder length.
In particular, in order to overcome the prior art problem encountered in desulfuring and denitrifying apparatus, activated carbon cylinder is generally required
The minimum value h of length is 1.5mm-7mm.Such as h=2,4 or 6mm.
D (or) depend on desulfuring and denitrifying apparatus specific requirement.Generally, D (or)=4.5-9.5mm, preferably 5-9mm,
More preferable 5.5-8.5mm, more preferable 6-8mm, such as 6.5mm, 7mm or 7.5mm.
Adsorption tower generally has at least two activated carbon material room.
Preferably, in the bottom of each activated carbon material room of adsorption tower tool, there are one round roller batcher or discharge round rollers
(G).For discharge round roller (G) described here, the discharge round roller of the prior art can be used.It is preferable, however, that replacing circle
Roller batcher or discharge round roller (G), a kind of novel star wheel type activated carbon discharge device (G) that can be used, it includes：Activity
The front apron and rear baffle of charcoal material room lower part, and positioned at by activated carbon material room lower part front apron and rear baffle and two side plate institutes
Star wheel type activated carbon material roller below the discharge gate of composition；Wherein star wheel type activated carbon material roller includes round roller and along round roller
Circumference be angularly distributed or multiple blades of basic spaced at equal angles around.More specifically, by activated carbon material room lower part
A kind of novel star wheel type activated carbon material roller is used below the discharge gate that front apron and rear baffle and two side plates are constituted.
From the cross section of star wheel type activated carbon material roller, star wheel type configuration or shape is presented.
Star wheel type activated carbon blanking device is mainly by the front apron of activated carbon discharge gate, rear baffle and two side plates and blade
It is formed with round roller.Front apron and rear baffle fixed setting, there are activated carbon blanking channels, i.e. discharge between front apron and rear baffle
Mouthful, which is made of front apron, rear baffle and two side plates.The lower end in front apron and rear baffle, blade is arranged in round roller
It is uniformly fixed in round roller, round roller does rotary motion by motor drive, and gyratory directions are from rear baffle to front apron direction.Blade it
Between angle or spacing cannot be excessive, the angle theta between blade is typically designed as being less than 64 °, such as 12-64 °, preferably 15-
60 °, preferably 20-55 °, more preferable 25-50 °, more preferable 30-45 °.Designed between blade and rear baffle bottom end a gap or
Away from s.The s generally takes 0.5-5mm, preferably 0.7-3mm, preferably 1-2mm.
The peripheral radius (or periphery radius of turn of the blade in round roller) of star wheel type activated carbon material roller is r.R is round roller
The width of radius+blade of the cross section (circle) of (106a).
Generally, the radius of the cross section (circle) of round roller is 30-120mm, preferably 50-100mm, and the width of blade is 40-
130mm, preferably 60-100mm.
The distance between round roller center and front apron lower end are h, and h is generally greater than r+ (12-30) mm, but is less than r/
It sin58 °, not only can guarantee that activated carbon blanking was smooth in this way, but also can guarantee that activated carbon does not slide voluntarily when round roller is motionless.
Generally, in this application, the cross section of the discharge gate of star wheel type activated carbon discharge device is square or rectangle,
Preferably length is more than the rectangle (or rectangle) of width.That is, length is more than the rectangle (or rectangle) of width.
Preferably, there are one or more blowdown rotary valves in the blanking bin of adsorption tower or Lower Hold (H).
For rotary valve described here, the rotary valve of the prior art can be used.It is preferable, however, that using a kind of
Novel rotary valve, it includes：Upper feed inlet, spool, blade, valve casing, lower part discharge port, the top for being located at the inner cavity of valve are empty
Between buffering area, peaceful flitch；Wherein buffering area is adjacent and communicating together with the lower space of feed inlet, and buffering area is in level side
The length of upward cross section is more than the length of the cross section of feed inlet in the horizontal direction；Wherein flat flitch is set to buffering area
Interior, the upper end of flat flitch is fixed on the top of buffering area, and " V " shape is presented in the cross section of flat flitch in the horizontal direction.
It is preferred that the cross section of upper feed inlet is rectangle or rectangle, and the cross section of buffering area is rectangle or rectangle.
It is preferred that the length of the cross section of buffering area is less than the length of the cross section of blade in the horizontal direction.
It is preferred that flat flitch is to be formed by two panels veneer splicing or flat flitch is to be bent into two plate faces by a sheet.
It is preferred that 2 α≤120 ° of two panels veneer or the angle of two plate faces, preferably 2 α≤90 °.Therefore, α≤60 °, preferably α≤
45°。
It is preferred that angle Φ >=30 ° between each veneer or each plate face and the length direction of buffering area, it is preferable that
>=45 °, it is further preferred that the angle of friction of Φ >=activated carbon material.
It is preferred that the respective bottom of two panels veneer or two respective bottoms of plate face all present it is arc-shaped.
It is preferred that the length of the center line segment between two panels veneer or two plate faces is equal to or less than buffering area in the horizontal direction
On cross section width.
Obviously ,+Φ=90 ° α.
Generally, in this application, the cross section of the discharge gate of rotary valve is square or rectangle, preferably length are more than
The rectangle (or rectangle) of width.That is, length is more than the rectangle (or rectangle) of width.
Generally, the height of the agent structure of adsorption tower is 10-60m (rice), and preferably 12-55m (rice), preferably 14-50m are excellent
Select 16-45m, 18-40m, preferably 20-35m, preferably 22-30m.The height of the agent structure of adsorption tower refers to (main from adsorption tower
Body structure) import to outlet between height.The tower height of adsorption tower refers to exporting to adsorption tower from absorption tower bottom activated carbon
The height of top activated carbon entrance, the i.e. height of the agent structure of tower.
Analytic Tower or regenerator usually have 8-45 meters, preferably 10-40 meters, more preferable 12-35 meters of tower height.Analytic Tower
Usually there are 6-100 meters2, preferably 8-50 meters2, it is 10-30 meters more preferable2, it is 15-20 meters further preferred2Body cross-section product.
In addition, in this application, flue gas includes in a broad sense：Conventional industrial smoke or industrial waste gas.
Compared with prior art, NO_x Reduction by Effective of the invention spray ammonia system has following advantageous effects：
1, NO_x Reduction by Effective of the invention spray ammonia system is equipped with the second ammonia-gas spraying device, two positions in the lower part of adsorption tower inner cavity
Ammonia is sprayed simultaneously, is increased denitration efficiency, while improving the utilization rate of ammonia, is realized the efficient utilization of activated carbon；
2, the flue in smoke inlet downstream is divided into two layers, and the first ammonia-gas spraying device is arranged in flue top, and injection ammonia is used
Reaction in adsorption tower upper layer；Second ammonia-gas spraying device is used for the reaction of adsorption tower lower layer in the lower part of adsorption tower inner cavity, improves de-
Sulphur denitration effect；
3, the second spray ammonia chamber is equipped in the application adsorption tower, the setting of the second ammonia-gas spraying device has in the second spray ammonia chamber
Effect protects the second spray ammonia chamber.
4, it eliminates tablet activated carbon using the sieve with rectangle sieve pore in vibrating screen and arch formation, sieve occurs
Under eliminate the very low tablet shaped activated carbon of wear-resisting compressive resistance, avoid generating fragment and dust in desulfuring and denitrifying apparatus,
Reduce activated carbon moving resistance, reduce in adsorption tower active carbon high-temp and burn risk, allow high intensity activated carbon in a device
Recycling.
5, using special discharge device, the discharging failure of activated carbon is reduced, package unit shut-down (breakdown) mainteance is substantially reduced
Frequency.
Description of the drawings
Fig. 1 is to spray ammonia system schematic diagram in the prior art；
Fig. 2 is that a kind of NO_x Reduction by Effective of the present invention sprays ammonia system structural schematic diagram；
Fig. 3 is that a kind of NO_x Reduction by Effective of the present invention sprays ammonia system another kind design structure schematic diagram.
Fig. 4 is the structural schematic diagram of the sieve of the prior art.
Fig. 5 is the structural schematic diagram of the sieve of the application.
Fig. 6 is the schematic diagram of tablet shaped activated carbon.
Fig. 7 is the schematic diagram of strip activated carbon.
Fig. 8 and 9 is the schematic diagram of the activated carbon discharge device (round roller batcher) of the prior art.
Figure 10 is the schematic diagram of the star wheel type activated carbon discharge device of the application.
The schematic diagram of the rotary valve F of Figure 11 present invention.
Figure 12 and Figure 13 is the structural schematic diagram along the cross section of the line A-A of Figure 11.
Figure 14 is the structural schematic diagram of flat flitch (F07).
Reference numeral：
1：Adsorption tower；101：Flue top；102：Flue lower part；103：Second spray ammonia chamber；2：Analytic Tower；3：Ammonia is mixed
It attaches together and sets；301：Ammonia entrance；302：Air intake；303：Mixed gas outlet；4：First activated carbon conveying device；5：Second
Activated carbon conveying device；601：First ammonia-gas spraying device；602：Second ammonia-gas spraying device；L1：First conveyance conduit；L2：Second conveying
Pipeline；L3：Ammonia conveyance conduit；L4：Airflow pipe；A：Smoke inlet；B：Exhanst gas outlet； V1：First control valve；V2：
Second control valve.Sv：Vibrating screen；
AC-c：Activated carbon material room；H：Lower hopper or Lower Hold；AC：Activated carbon；AC-1：Activated carbon block (or aggregation)；
F：Rotary valve；
G：Round roller batcher or star wheel type activated carbon discharge device or star wheel type activated carbon material roller；G01：Round roller；G02：
Blade； AC-I：Front apron；AC-II：Rear baffle；
h：The distance between the axis center of round roller G01 and the lower ends front apron AC-I；S：Between blade and rear baffle bottom end
(gap) spacing；θ：Angle on round roller G01 between adjacent blades G02；r：Between the outer rim and the axis center of round roller G01 of blade
Distance (i.e. radius of the blade for the center of round roller G01, abbreviation radius)；
F：It is fed rotary valve；F01：Spool；F02：Blade；F03：Valve casing；F04：Upper feed inlet；F05：Lower part discharges
Mouthful；F06:Positioned at the buffering area of the upper space of the inner cavity of valve；F07：Flat flitch；F0701 or F0702：The two of flat flitch F07
Two plate faces of piece veneer or flat flitch F07.
α：The 1/2 of two panels veneer (F0701, F0702) or the angle of two plate faces (F0701, F0702).
Φ：Each veneer (F0701 or F0702) or each plate face (F0701 or F0702) and buffering area (F06)
Angle between length direction.
L1：The length of cross sections of the feed inlet F04 on horizontal plane direction；L2：Flat flitch F07 is on horizontal plane direction
The length of cross section.
Specific implementation mode
The first embodiment according to the present invention provides a kind of NO_x Reduction by Effective spray ammonia system.
A kind of NO_x Reduction by Effective spray ammonia system, the system include adsorption tower 1, Analytic Tower 2, the 3, first activity of ammonia mixing arrangement
Charcoal conveying device 4, the second activated carbon conveying device 5, the first conveyance conduit L1, the second conveyance conduit L2.The side of adsorption tower 1 is set
There is smoke inlet A.The other side of adsorption tower 1 is equipped with exhanst gas outlet B.Smoke inlet A is equipped with the first ammonia-gas spraying device 601.Adsorption tower 1
The lower part of inner cavity is equipped with the second ammonia-gas spraying device 602.Ammonia mixing arrangement 3 includes ammonia entrance 301, air intake 302, mixing
Gas vent 303.First conveyance conduit L1 connections mixed gas outlet 303 and the first ammonia-gas spraying device 601.Second conveyance conduit L2
Connect mixed gas outlet 303 and the second ammonia-gas spraying device 602.Ammonia entrance 301 is connect with ammonia conveyance conduit L3.Air enters
Mouth 302 connect with airflow pipe L4 or is communicated with air.First activated carbon conveyer 4 is for connecting going out for adsorption tower 1
The feed inlet of material mouth and Analytic Tower 2.Second activated carbon conveyer 5 is used to connect the charging of the discharge port and adsorption tower 1 of Analytic Tower 2
Mouthful.
Preferably, the downstreams smoke inlet A are flue.The flue in the downstreams smoke inlet A is divided into two layers.Respectively on flue
Portion 101, flue lower part 102.The setting of first ammonia-gas spraying device 601 is in flue top (101).
Preferably, being equipped with the second spray ammonia chamber 103 in adsorption tower 1.In the vertical direction, the second spray ammonia chamber 103
In lower part in adsorption tower 1.Preferably, in the horizontal direction, the second spray ammonia chamber 103 is close to the sides exhanst gas outlet B.
Preferably, the side wall of the second spray ammonia chamber 103 is porous plate.The setting of second ammonia-gas spraying device 602 sprays ammonia second
In chamber 103.
Preferably, in the vertical direction, the height of the second spray ammonia chamber 103 is concordant with 102 top of flue lower part, or
The top of person, the second spray ammonia chamber 103 are less than the top of flue lower part 102.
Preferably, the first conveyance conduit L1 is equipped with the first control valve V1.
Preferably, the second conveyance conduit L2 is equipped with the second control valve V2.
Preferably, the second conveyance conduit L2 is the branch that the first conveyance conduit L1 is separated.The one of second conveyance conduit L2
The other end of the first conveyance conduit L1, the second conveyance conduit L2 of end connection connects the second ammonia-gas spraying device 602.
In the present invention, the ammonia spraying amount of the second ammonia-gas spraying device 602 is the 10-60% of 601 ammonia spraying amount of the first ammonia-gas spraying device, excellent
It is selected as 20-50%, more preferably 25-40%.
In the present invention, the mixed gas after ammonia mixing arrangement 3 is delivered to by two-way in adsorption tower.The first via
Mixed gas is delivered to by the first conveyance conduit L1 at the first ammonia-gas spraying device 601 at smoke inlet A, at former smoke inlet
Spray ammonia.This part ammonia primarily enters adsorption tower upper layer, is reacted with the activated carbon on adsorption tower upper layer, increase processing oxysulfide,
The effect of the pollutants such as nitrogen oxides, bioxin.Second tunnel mixed gas is delivered to by the second conveyance conduit L2 in adsorption tower 1
At second ammonia-gas spraying device 602 of chamber lower part, ammonia is sprayed in adsorption tower lower part, directly injection is in adsorption tower.This part ammonia is whole
Into adsorption tower lower layer (preferably entering active carbon layer of the adsorption tower at exhanst gas outlet B), the activity with adsorption tower lower layer
Charcoal reacts, and increases the effect of the pollutants such as processing oxysulfide, nitrogen oxides, bioxin.
In all NO_x Reduction by Effective spray ammonia system (or making system for desulfuration and denitration) of the application, generally, in Analytic Tower
The lower section or downstream of bottom discharge mouth use vibrating screen or multi-stage screening machine (or multi-stage oscillating screen) equipped with sieve.
In order to avoid retention of the activated carbon on sieve of drug sheet, the application is designed with rectangle sieve pore or strip
The sieve of shape sieve pore.The sieve can be mounted on vibrating screen or multi-stage screening machine (or multi-stage oscillating screen), filtered out and met desulfurization
Spray the active carbon particle of the needs of ammonia system.
It is preferred, therefore, that a kind of sieve with rectangle sieve pore or strip sieve pore is provided, the rectangle sieve pore
Length L >=3D, the width a=0.65h-0.95h (preferably 0.7h-0.9h, more preferable 0.73h-0.85h) of rectangle sieve pore,
Middle D is the diameter of the circular cross section for the activated carbon cylinder to be retained on sieve, and h is to be retained on sieve
The minimum value of granular active carbon cylinder length.
In particular, spraying the prior art problem encountered in ammonia system in desulfurization to overcome, activated carbon cylinder is generally required
The minimum value h of length is 1.5mm-7mm.Such as h=2,4 or 6mm.
D (or) depend on desulfuring and denitrifying apparatus specific requirement.Generally, D (or)=4.5-9.5mm, preferably 5-9mm,
More preferable 5.5-8.5mm, more preferable 6-8mm, such as 6.5mm, 7mm or 7.5mm.
Embodiment A
As shown in Figure 5, the size (sieve retention size) of the finished activated charcoal recycled in ammonia system is sprayed in desulfurization
It is required that being(diameter, D) × 6mm (length, h) then designs a kind of sieve in one layer of sieve of vibrating screen 3, wherein
The width a and length L of rectangle sieve pore be：5mm (width a) × 27mm (length L).Wherein D to be retained on sieve
The diameter of the circular cross section of activated carbon cylinder, h are the granular active carbon cylinder lengths to be retained on sieve
Minimum value.A=0.833h.
Embodiment B
As shown in Figure 5, the size (sieve retention size) of the finished activated charcoal recycled in ammonia system is sprayed in desulfurization
It is required that being(diameter, D) × 4mm (length, h) then designs a kind of sieve in one layer of sieve of vibrating screen 3, wherein
The width a and length L of rectangle sieve pore be：3mm (width a) × 27mm (length L).Wherein D to be retained on sieve
The diameter of the circular cross section of granular active carbon cylinder.A=0.75h.The sieve of the screen size is for retaining medium grain
The activated carbon of diameter.
Embodiment C
As shown in Figure 5, the size (sieve retention size) of the finished activated charcoal recycled in ammonia system is sprayed in desulfurization
It is required that being(diameter, D) × 2mm (average length), then design a kind of sieve in one layer of sieve of vibrating screen 3,
The width a and length L of middle rectangle sieve pore be：1.6mm (width a) × 16mm (length L).Wherein D is cut on sieve
The diameter of the circular cross section of the granular active carbon cylinder stayed.A=0.75h.
Adsorption tower generally has at least two activated carbon material room.
Preferably, in the bottom of each activated carbon material room AC-c of adsorption tower tool, there are one round roller batcher or discharges
Round roller G.Generally, adsorption tower has at least two activated carbon material room AC-c.
For round roller batcher described here or discharge round roller G, can use round roller batcher in the prior art or
Discharge round roller G, as shown in figs.It is preferable, however, that instead of round roller batcher or discharge round roller G, one kind can be used
Novel star wheel type activated carbon discharge device G, as shown in Figure 10.Novel star wheel type activated carbon discharge device G includes：Activity
The front apron AC-I and rear baffle AC-II of charcoal material room lower part, and kept off with rear positioned at the front apron AC-I by activated carbon material room lower part
Star wheel type activated carbon material roller G below the discharge gate that plate AC-II and two side plates are constituted；Wherein star wheel type activated carbon is arranged
Material roller G include round roller G01 and angularly be distributed along the circumference of round roller or substantially spaced at equal angles around multiple blade G02.More
Specifically, in the discharge gate being made of the front apron AC-I of activated carbon material room lower part and rear baffle AC-II and two side plates
Lower section uses a kind of novel star wheel type activated carbon material roller G.That is, lower part active-carbon bed layer segment (A) it is every
The bottom of one material room or in the front apron (AC-I) and rear baffle (AC-II) and two side plate institute structures by activated carbon material room lower part
At discharge gate below, be equipped with star wheel type activated carbon material roller (G).
From the cross section of star wheel type activated carbon material roller G, star wheel type configuration or shape is presented.
In addition.Novel star wheel type activated carbon discharge device can also abbreviation star wheel type activated carbon material roller G, or both can
It is used interchangeably.
Star wheel type activated carbon blanking device is mainly by the front apron AC-I of activated carbon discharge gate, rear baffle AC-II and two
Side plate is formed with blade G02 and round roller G01.Front apron and rear baffle fixed setting, there are activity between front apron and rear baffle
Charcoal blanking channel, i.e. discharge gate, the discharge gate are made of front apron AC-I, rear baffle AC-II and two side plates.Round roller setting exists
The lower end of front apron AC-I and rear baffle AC-II, blade G02 are uniformly fixed on round roller G01, and round roller G01 is done by motor drive
Rotary motion, gyratory directions are from rear baffle AC-II to the directions front apron AC-I.Angle or spacing between blade G02 cannot mistakes
Greatly, the angle theta between blade is typically designed as less than 64 °, such as 12-64 °, preferably 15-60 °, preferably 20-55 °, more preferably
25-50 °, more preferable 30-45 °.A gap or distance s are designed between blade and rear baffle bottom end.The s generally takes 0.5-5mm,
It is preferred that 0.7-3mm, preferably 1-2mm.
The peripheral radius (or periphery radius of turn of the blade in round roller) of star wheel type activated carbon material roller G is r.R is round
The width of radius+blade G02 of the cross section (circle) of roller G01.
Generally, the radius of the cross section (circle) of round roller G01 is 30-120mm, and the width of blade G02 is 40-130mm.
The distance between round roller center and front apron lower end are h, and h is generally greater than r+ (12-30) mm, but is less than r/
It sin58 °, not only can guarantee that activated carbon blanking was smooth in this way, but also can guarantee that activated carbon does not slide voluntarily when round roller is motionless.
Generally, in this application, the cross section of the discharge gate of star wheel type activated carbon discharge device is square or rectangle,
Preferably length is more than the rectangle (or rectangle) of width.That is, length is more than the rectangle (or rectangle) of width.
Preferably, there are one or more blowdown rotary valve F in the blanking bin of adsorption tower or Lower Hold 107.
For rotary valve F described here, the rotary valve of the prior art can be used, as shown in Figure 8.However, it is preferred to
, using a kind of novel rotary valve F, as illustrated in figs. 11-14.Novel rotary valve F includes：Upper feed inlet F04, spool
F01, blade F02, valve casing F03, lower part discharge port F05 are located at the buffering area F06 of the upper space of the inner cavity of valve, peaceful flitch
F07；Wherein buffering area F06 is adjacent and communicating together with the lower space of feed inlet F04, and buffering area F06 is in the horizontal direction
The length of cross section is more than the length of the cross sections of feed inlet F04 in the horizontal direction；Wherein flat flitch is set to buffering area F06
Interior, the upper end of flat flitch F07 is fixed on the top of buffering area F06, and " V " is presented in the cross sections of flat flitch F07 in the horizontal direction
Shape.
It is preferred that the cross section of upper feed inlet F04 is rectangle or rectangle, and the cross section of buffering area F06 is rectangle
Or rectangle.
It is preferred that the length of the cross section of buffering area F06 is less than the length of the cross sections of blade F02 in the horizontal direction.
It is preferred that flat flitch F07 is to be spliced by two panels veneer (F0701, F0702) or flat flitch F07 is by a piece of
Plate is bent into two plate faces (F0701, F0702).
It is preferred that 2 α≤120 ° of angle of two panels veneer (F0701, F0702) or two plate faces (F0701, F0702), preferably 2
α≤90°.Therefore, α≤60 °, preferably α≤45 °.
It is preferred that each veneer (F0701 or F0702) or each plate face (F0701 or F0702) are with buffering area F06's
Angle Φ >=30 ° between length direction, it is preferable that >=45 °, it is further preferred that the angle of friction of Φ >=activated carbon material.
It is preferred that the respective bottom of two panels veneer (F0701, F0702) or two respective bottoms of plate face (F0701, F0702)
It all presents arc-shaped.
It is preferred that the length of the center line segment between two panels veneer (F0701, F0702) or two plate faces (F0701, F0702)
Equal to or less than the width of the cross sections of buffering area F06 in the horizontal direction.
Obviously ,+Φ=90 ° α.
Generally, in this application, the cross section of the discharge gate F05 of novel rotary valve F is square or rectangle, preferably
It is more than the rectangle (or rectangle) of width for length.That is, length is more than the rectangle (or rectangle) of width.
Embodiment 1
A kind of NO_x Reduction by Effective spray ammonia system, the system include adsorption tower 1, Analytic Tower 2, the 3, first activity of ammonia mixing arrangement
Charcoal conveying device 4, the second activated carbon conveying device 5, the first conveyance conduit L1, the second conveyance conduit L2.The side of adsorption tower 1 is set
There is smoke inlet A.The other side of adsorption tower 1 is equipped with exhanst gas outlet B.Smoke inlet A is equipped with the first ammonia-gas spraying device 601.Adsorption tower 1
The lower part of inner cavity is equipped with the second ammonia-gas spraying device 602.Ammonia mixing arrangement 3 includes ammonia entrance 301, air intake 302, mixing
Gas vent 303.First conveyance conduit L1 connections mixed gas outlet 303 and the first ammonia-gas spraying device 601.Second conveyance conduit L2
Connect mixed gas outlet 303 and the second ammonia-gas spraying device 602.Ammonia entrance 301 is connect with ammonia conveyance conduit L3.Air enters
Mouth 302 connect with airflow pipe L4 or is communicated with air.First activated carbon conveyer 4 is for connecting going out for adsorption tower 1
The feed inlet of material mouth and Analytic Tower 2.Second activated carbon conveyer 5 is used to connect the charging of the discharge port and adsorption tower 1 of Analytic Tower 2
Mouthful.
There are two activated carbon material room AC-c for the tool of adsorption tower 1, as shown in Figure 8.The discharge port of each material room AC-c is equipped with circle
Roller batcher G.The discharge port of lower hopper or Lower Hold H are equipped with rotary valve F.Preferably, the lower section of 2 discharge gate of Analytic Tower is equipped with and shakes
Dynamic sieve Sv, wherein vibrating screen Sv is equipped with the sieve of embodiment A, referring to Fig. 2.
Embodiment 2
Embodiment 1 is repeated, only the downstreams smoke inlet A are flue.The flue in the downstreams smoke inlet A is divided into two layers.Respectively
For flue top 101, flue lower part 102.First ammonia-gas spraying device 601 is arranged in flue top 101.The is equipped in adsorption tower 1
Two spray ammonia chambers 103.In the vertical direction, the second spray ammonia chamber 103 is located at lower part in adsorption tower 1, in the horizontal direction, second
Ammonia chamber 103 is sprayed close to the sides exhanst gas outlet B.The side wall of second spray ammonia chamber 103 is porous plate.Second ammonia-gas spraying device 602 is set
It sets in the second spray ammonia chamber 103.The height of second spray ammonia chamber 103 is concordant with 102 top of flue lower part.
Embodiment 3
Embodiment 2 is repeated, only the top of the second spray ammonia chamber 103 is less than the top 20cm of flue lower part 102.
Embodiment 4
Embodiment 2 is repeated, only the second conveyance conduit L2 is the branch that the first conveyance conduit L1 is separated.Second conveyance conduit
The other end that one end of L2 connects the first conveyance conduit L1, the second conveyance conduit L2 connects the second ammonia-gas spraying device 602.First is defeated
Pipeline L1 is sent to be equipped with the first control valve V1.Second conveyance conduit L2 is equipped with the second control valve V2.
Embodiment 5
Using the method for embodiment 4, the mixed gas after ammonia mixing arrangement 3 is delivered to adsorption tower by two-way
It is interior.First via mixed gas is delivered to by the first conveyance conduit L1 at the first ammonia-gas spraying device 601 at smoke inlet A, in original
Ammonia is sprayed at smoke inlet.This part ammonia primarily enters adsorption tower upper layer, is reacted with the activated carbon on adsorption tower upper layer, increase processing
The effect of the pollutants such as oxysulfide, nitrogen oxides, bioxin.Second tunnel mixed gas is delivered to by the second conveyance conduit L2
At second ammonia-gas spraying device 602 of 1 inner cavity lower part of adsorption tower, ammonia is sprayed in adsorption tower lower part, directly injection is in adsorption tower.This part
Ammonia fully enters adsorption tower lower layer (preferably enter active carbon layer of the adsorption tower at exhanst gas outlet B), and under adsorption tower
The activated carbon reaction of layer, increases the effect of the pollutants such as processing oxysulfide, nitrogen oxides, bioxin.
Wherein：The ammonia spraying amount of second ammonia-gas spraying device 602 is the 30% of 601 ammonia spraying amount of the first ammonia-gas spraying device.
Adsorption tower top gametic fertility efficiency is about 40% used in the prior art；Using the system of the application, under
After portion sprays into a small amount of ammonia (about the 30% of top ammonia spraying amount), system denitrification rate increases to about 50%.
In the above-described embodiments, it is replaced in 2 discharge gate of Analytic Tower by using the vibrating screen Sv equipped with specific sieve
The common vibrating screen of lower section eliminates tablet activated carbon and arch formation occurs, and it is very low to eliminate wear-resisting compressive resistance under sieve
Tablet shaped activated carbon avoids generating fragment and dust in desulfuring and denitrifying apparatus, reduces activated carbon moving resistance, reduce absorption
Active carbon high-temp burns risk in tower, allow high intensity activated carbon recycling in a device, reduce Vibration Screen blanking and drop
Low operating cost.
Embodiment 6
Embodiment 1 is repeated, only instead of discharge round roller G, and uses a kind of novel star wheel type activated carbon discharge device, such as
Shown in Figure 10.In the bottom of an activated carbon material room, 1 discharge gate is set.Discharge gate is by front apron AC-I and rear baffle AC-II
It is constituted with two side plate (not shown)s.
The height of the agent structure of adsorption tower is 21m (rice).Adsorption tower 1 has 2 activated carbon material rooms.Wherein it is in the left side
The thickness of the first material room be 180mm.The thickness of the second material room in the right is 900mm.
Star wheel type activated carbon discharge device includes：The front apron AC-I and rear baffle AC-II of activated carbon material room lower part and position
Star-wheel below the discharge gate being made of the front apron AC-I of activated carbon material room lower part and rear baffle AC-II and two side plates
Formula activated carbon material roller G；Wherein star wheel type activated carbon material roller G include round roller G01 and along round roller circumference angularly (θ=
30 °) distribution 12 blade G02.
From the cross section of star wheel type activated carbon material roller G, star wheel type configuration is presented.
The discharge gate is made of front apron AC-I, rear baffle AC-II and two side plates.Round roller setting front apron AC-I with
The lower end of rear baffle AC-II, blade G02 are uniformly fixed on round roller G01, and round roller G01 does rotary motion by motor drive, turns round
Direction is from rear baffle AC-II to the directions front apron AC-I.Angle theta between blade G02 is 30 °.Blade and rear baffle bottom end it
Between design a gap or distance s.The s takes 2mm.
The peripheral radius (or periphery radius of turn of the blade in round roller) of star wheel type activated carbon material roller G is r.R is round
The width of radius+blade G02 of the cross section (circle) of roller G01.
The radius of the cross section (circle) of round roller G01 is 60mm, and the width of blade G02 is 100mm.
The distance between round roller center and front apron lower end are h, and h is generally greater than r+ (12-30) mm, but is less than r/
It sin58 °, not only can guarantee that activated carbon blanking was smooth in this way, but also can guarantee that activated carbon does not slide voluntarily when round roller is motionless.
Embodiment 7
Embodiment 2 is repeated, only instead of discharge round roller G, and uses a kind of novel star wheel type activated carbon discharge device, such as
Shown in Figure 10.In the bottom of an activated carbon material room, 1 discharge gate is set.Discharge gate is by front apron AC-I and rear baffle AC-II
It is constituted with two side plate (not shown)s.
The height of the agent structure of adsorption tower is 21m (rice).The thickness of the first material room on the left side is 160mm.The of the right
The thickness of two material rooms is 1000mm.
Star wheel type activated carbon discharge device includes：The front apron AC-I and rear baffle AC-II of activated carbon material room lower part and position
Star-wheel below the discharge gate being made of the front apron AC-I of activated carbon material room lower part and rear baffle AC-II and two side plates
Formula activated carbon material roller G；Wherein star wheel type activated carbon material roller G include round roller G01 and along round roller circumference angularly (θ=
45 °) distribution 8 blade G02.
From the cross section of star wheel type activated carbon material roller G, star wheel type configuration is presented.
The discharge gate is made of front apron AC-I, rear baffle AC-II and two side plates.Round roller setting front apron AC-I with
The lower end of rear baffle AC-II, blade G02 are uniformly fixed on round roller G01, and round roller G01 does rotary motion by motor drive, turns round
Direction is from rear baffle AC-II to the directions front apron AC-I.Angle theta between blade G02 is 45 °.Blade and rear baffle bottom end it
Between design a gap or distance s.The s takes 1mm.
The peripheral radius of star wheel type activated carbon material roller G is r.R is radius+blade G02 of the cross section (circle) of round roller G01
Width.
The radius of the cross section (circle) of round roller G01 is 90mm, and the width of blade G02 is 70mm.
The distance between round roller center and front apron lower end are h, and h is generally greater than r+ (12-30) mm, but is less than r/
It sin58 °, not only can guarantee that activated carbon blanking was smooth in this way, but also can guarantee that activated carbon does not slide voluntarily when round roller is motionless.
Embodiment 8
Embodiment 2 is repeated, only instead of common blowdown rotary valve F, and uses a kind of novel blowdown rotary valve F, such as
Shown in Figure 11-14.
Novel rotary valve F includes：Upper feed inlet F04, spool F01, blade F02, valve casing F03, lower part discharge port
F05 is located at the buffering area F06, peaceful flitch F07 of the upper space of the inner cavity of valve.Wherein buffering area F06 and feed inlet F04's
Lower space is adjacent and communicating together, and the length of the cross sections of buffering area F06 in the horizontal direction is more than feed inlet F04 in level
The length of cross section on direction；Wherein flat flitch is set in buffering area F06, and the upper end of flat flitch F07 is fixed on buffering area
" V " shape is presented in the top of F06, the cross sections of flat flitch F07 in the horizontal direction.
The cross section of upper feed inlet F04 is rectangle, and the cross section of buffering area F06 is also rectangle.
The length of the cross section of buffering area F06 is less than the length of the cross sections of blade F02 in the horizontal direction.
Flat flitch F07 is spliced by two panels veneer (F0701, F0702).
2 α of angle of two panels veneer (F0701, F0702) is 90 °.
It is preferred that each veneer (F0701 or F0702) or each plate face (F0701 or F0702) are with buffering area F06's
Angle Φ between length direction is 30 °.Ensure that Φ is more than the angle of friction of activated carbon material.
The respective bottom two panels veneer (F0701, F0702) all presents arc-shaped.
The length of center line segment between two panels veneer (F0701, F0702) or two plate faces (F0701, F0702) is slightly smaller
Width in the cross sections of buffering area F06 in the horizontal direction.
+ Φ=90 ° α.
The periphery radius of turn of the blade of rotary valve is r.R is radius+blade F02 of the cross section (circle) of spool F01
Width.
Spool F01) the radius of cross section (circle) be 30mm, the width of blade F02 is 100mm.That is, r is 130mm.
The length of blade F02 is 380mm.
Embodiment 9
Embodiment 7 is repeated, only instead of common blowdown rotary valve F, and uses a kind of novel blowdown rotary valve F, such as
Shown in Figure 11-14.
Rotary valve F includes：Upper feed inlet F04, spool F01, blade F02, valve casing F03, lower part discharge port F05 are located at
The buffering area F06, peaceful flitch F07 of the upper space of the inner cavity of valve.The wherein lower space of buffering area F06 and feed inlet F04
Adjacent and communicating together, the length of the cross sections of buffering area F06 in the horizontal direction is more than feed inlet F04 in the horizontal direction
The length of cross section；Wherein flat flitch is set in buffering area F06, and the upper end of flat flitch F07 is fixed on the top of buffering area F06
" V " shape is presented in portion, the cross sections of flat flitch F07 in the horizontal direction.
The cross section of upper feed inlet F04 is rectangle, and the cross section of buffering area F06 is also rectangle.
The length of the cross section of buffering area F06 is less than the length of the cross sections of blade F02 in the horizontal direction.
Flat flitch F07 is spliced by two panels veneer (F0701, F0702).
2 α of angle of two panels veneer (F0701, F0702) is 90 °.
It is preferred that each veneer (F0701 or F0702) or each plate face (F0701 or F0702) are with buffering area F06's
Angle Φ between length direction is 30 °.Ensure that Φ is more than the angle of friction of activated carbon material.
The respective bottom two panels veneer (F0701, F0702) all presents arc-shaped.
The length of center line segment between two panels veneer (F0701, F0702) or two plate faces (F0701, F0702) is slightly smaller
Width in the cross sections of buffering area F06 in the horizontal direction.
+ Φ=90 ° α.
The periphery radius of turn of the blade of rotary valve is r.R is radius+blade F02 of the cross section (circle) of spool F01
Width.
Spool F01) the radius of cross section (circle) be 30mm, the width of blade F02 is 100mm.That is, r is 130mm.
The length of blade F02 is 380mm.
Claims (16)
1. a kind of NO_x Reduction by Effective sprays ammonia system, which includes adsorption tower (1), Analytic Tower (2), ammonia mixing arrangement (3), first
Activated carbon conveying device (4), the second activated carbon conveying device (5), the first conveyance conduit (L1), the second conveyance conduit (L2)；It inhales
The side of attached tower (1) is equipped with smoke inlet (A), and the other side of adsorption tower (1) is equipped with exhanst gas outlet (B)；Smoke inlet (A) is equipped with
The lower part of first ammonia-gas spraying device (601), adsorption tower (1) inner cavity is equipped with the second ammonia-gas spraying device (602), ammonia mixing arrangement (3) packet
Ammonia entrance (301), air intake (302), mixed gas outlet (303) are included, the first conveyance conduit (L1) connects mixed gas
(303) and the first ammonia-gas spraying device (601) are exported, the second conveyance conduit (L2) connects mixed gas outlet (303) and the second spray ammonia
Device (602)；Ammonia entrance (301) is connect with ammonia conveyance conduit (L3), air intake (302) and airflow pipe (L4)
Connection is communicated with air；Discharge port and Analytic Tower (2) of the first activated carbon conveyer (4) for connecting adsorption tower (1)
Feed inlet；Second activated carbon conveyer (5) is used to connect the feed inlet of the discharge port and adsorption tower (1) of Analytic Tower (2).
2. system according to claim 1, it is characterised in that：The downstream smoke inlet (A) is flue, under smoke inlet (A)
The flue of trip is divided into two layers, respectively flue top (101), flue lower part (102), and the first ammonia-gas spraying device (601) is arranged in cigarette
In road top (101).
3. system according to claim 1 or 2, it is characterised in that：The second spray ammonia chamber (103) is equipped in adsorption tower (1),
In the vertical direction, the second spray ammonia chamber (103) is located at adsorption tower (1) interior lower part；Preferably, in the horizontal direction, second
Ammonia chamber (103) is sprayed close to the side exhanst gas outlet (B).
4. system according to claim 3, it is characterised in that：Second spray ammonia chamber (103) side wall be porous plate, second
Ammonia-gas spraying device (602) setting is in the second spray ammonia chamber (103).
5. system according to claim 4, it is characterised in that：In the vertical direction, the height of the second spray ammonia chamber (103)
It is concordant at the top of flue lower part (102), alternatively, the top of the second spray ammonia chamber (103) is less than the top of flue lower part (102).
6. system according to any one of claims 1-5, it is characterised in that：First conveyance conduit (L1) is equipped with first
Control valve (V1), and/or
Second conveyance conduit (L2) is equipped with the second control valve (V2).
7. according to the system described in any one of claim 1-6, it is characterised in that：Second conveyance conduit (L2) is the first conveying
One end of the branch that pipeline (L1) separates, the second conveyance conduit (L2) connects the first conveyance conduit (L1), the second conveyance conduit
(L2) the other end connects the second ammonia-gas spraying device (602).
8. according to the system described in any one of claim 1-7, it is characterised in that：The ammonia spraying amount of second ammonia-gas spraying device (602)
For the 10-60% of the first ammonia-gas spraying device (601) ammonia spraying amount, preferably 20-50%, more preferably 25-40%.
9. according to the device described in any one of claim 1-8, wherein in the lower section of the bottom discharge mouth of Analytic Tower (2) or
Downstream, which uses, is equipped with a kind of vibrating screen (Sv) of the sieve with rectangle sieve pore, and length L >=3D of the rectangle sieve pore is rectangular
The width a=0.65h-0.95h (preferably 0.7h-0.9h, more preferable 0.73h-0.85h) of shape sieve pore, wherein D is the institute on sieve
The diameter of the circular cross section for the activated carbon cylinder to be retained, h are the granulated activated carbon cylinders to be retained on sieve
The minimum value of body length, it is preferred that h=1.5mm-7mm；It is further preferred that the circular cross section of activated carbon cylinder is straight
DiameterFor 4.5-9.5mm, preferably 5-9mm.
10. according to the device described in any one of claim 1-9, wherein adsorption tower (1) has at least two activated carbon material room
(AC-c), and the bottom of each activated carbon material room (AC-c) or by activated carbon material room lower part front apron (AC-I) and
Below the discharge gate that rear baffle (AC-II) and two side plates are constituted, star wheel type activated carbon material roller (G), the star wheel type are housed
Activated carbon material roller (G) include round roller (G01) and be angularly distributed along the circumference of round roller or basic spaced at equal angles around it is more
A blade (G02).
11. device according to claim 10, wherein round roller (G01) are arranged in front apron (AC-I) and rear baffle (AC-
II lower end), the angle theta between the blade being distributed on the circumference of round roller (G01) (G02) is 12-64 °, preferably 15-60 °, more
It is preferred that 20-55 °, more preferable 25-50 °, more preferable 30-45 °.
12. according to the devices described in claim 11, the distance s wherein between blade (G02) and rear baffle bottom end are 0.5-
5mm, preferably 0.7-3mm, preferably 1-2mm；And/or
The radius of the cross section (circumference) of round roller (G01) is 30-120mm, and the width of blade (G02) is 40-130mm；And/or
The distance between round roller center and front apron lower end h are greater than r+ (12-30) mm, but are less than r/sin58 °.
13. according to the device described in any one of claim 1-12, wherein have in the blanking bin or Lower Hold (H) of adsorption tower
There are one or multiple blowdown rotary valves (F), the rotary valve (F) include：Upper feed inlet (F04), spool (F01), blade
(F02), valve casing (F03), lower part discharge port (F05) are located at the buffering area (F06) of the upper space of the inner cavity of valve, peaceful flitch
(F07)；Wherein buffering area (F06) and the lower space of feed inlet (F04) is adjacent and communicating together, and buffering area (F06) is in level
The length of cross section on direction is more than the length of the cross section of feed inlet (F04) in the horizontal direction；Wherein flat flitch setting
In buffering area (F06), the upper end of flat flitch (F07) is fixed on the top of buffering area (F06), and flat flitch (F07) is in level side
" V " shape is presented in upward cross section.
14. device according to claim 13, wherein the cross section of upper feed inlet (F04) is rectangle or rectangle, and
The cross section of buffering area (F06) is rectangle or rectangle；And/or
The length of the cross section of buffering area (F06) is less than the length of the cross section of blade (F02) in the horizontal direction.
15. the system according to claim 13 or 14, wherein flat flitch (F07) is by two panels veneer (F0701, F0702)
It is spliced or flat flitch (F07) is to be bent into two plate faces (F0701, F0702) by a sheet, two panels veneer (F0701,
F0702) or 2 α≤120 ° of angle of two plate faces (F0701, F0702), that is, α≤60 °.
16. according to the system described in any one of claim 13-15, wherein each veneer (F0701 or F0702) or
Angle Φ >=30 ° between each plate face (F0701 or F0702) and the length direction of buffering area (F06), it is further preferred that
The angle of friction of Φ >=activated carbon material；And/or
The wherein respective bottom of two panels veneer (F0701, F0702) or two respective bottoms of plate face (F0701, F0702) is all in
It is existing arc-shaped.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112156761A (en) * | 2020-04-09 | 2021-01-01 | 北京中航泰达环保科技股份有限公司 | Novel active carbon regeneration device |
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