CN208810359U - Demercuration adsorbent injection apparatus and coal-fired plant flue gas processing system - Google Patents
Demercuration adsorbent injection apparatus and coal-fired plant flue gas processing system Download PDFInfo
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- CN208810359U CN208810359U CN201820808982.0U CN201820808982U CN208810359U CN 208810359 U CN208810359 U CN 208810359U CN 201820808982 U CN201820808982 U CN 201820808982U CN 208810359 U CN208810359 U CN 208810359U
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- main jet
- injection apparatus
- demercuration adsorbent
- jet cylinder
- flue
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Abstract
The utility model relates to a kind of demercuration adsorbent injection apparatus and coal-fired plant flue gas processing systems, the demercuration adsorbent injection apparatus includes the more spraying guns of main jet cylinder and length not etc., each spraying gun is parallelly mounted to the discharge end of the main jet cylinder, and one end of the separate main jet cylinder of each spraying gun is equipped with nozzle.In such a way that bifurcated connects multiple spraying guns on main jet cylinder, each spraying gun is single spraying mouth structure, basic only stretched to by each spraying gun sprays demercuration adsorbent in flue, injection apparatus is very small to the resistance of flow of flue gas in flue, the spraying gun not waited since multiple length are arranged, spray regime can cover the entire height of flue, when in flue along the above-mentioned demercuration adsorbent injection apparatus of the more sets of cross section parallel arrangement, while not increasing smoke flow resistance, wider demercuration adsorbent flow trace can be obtained.
Description
Technical field
The utility model belongs to environmental technology field more particularly to coal-fired plant flue gas demercuration technical field, and in particular to
A kind of demercuration adsorbent injection apparatus and the coal-fired plant flue gas processing system using the demercuration adsorbent injection apparatus.
Background technique
Mercury is a kind of neurotoxic substance, has extremely strong cumulative bad and irreversibility, has very big threat to human health.
Coal-burning power plant is one of most important artificial mercury pollution source.With the continuous improvement of environmental requirement, seek efficient, economy, environment
The Mercury vacancy technology of friendly is of great significance.
In the prior art, it generallys use mercury removal device and utilizes the mercury in efficient absorption material removal flue gas, current grinds
Study carefully and is concentrated mainly on two aspects of demercuration sorbing material and mercury removal device.It is most of de- in the experiment of laboratory fixed bed demercuration
Mercury adsorbent material all has very high absorption property, but is applied to practical flue, and injection front and back comparison, mercury in flue gas concentration does not have
It is substantially reduced.For existing sorbent injection device, several vertically-mounted spraying canisters are arranged in flue cross section, spray tube length
Degree is equal to flue height, there is multiple spouts on spraying canister, and mercury absorbent can be completely covered entire flue, but flue gas in flue
Flow resistance is significantly increased, and flue crushing increases, and flue gravitation blower stall event occurs, seriously affects the safety and stability of unit
Operation.In addition, being arranged in parallel vertically in flue cross section multiple for the injection apparatus of low speed 10~20m/s direct-injection cylinder single jet
Injection apparatus, by carrying out CFD injection simulation, discovery adsorbent has very narrow flow trace in flue, cannot be diffused into whole
A flue cross section is sufficiently mixed with flue gas.And in actual production process, increase the meeting of injection apparatus quantity on a large scale
Increase construction cost and maintenance cost.
Utility model content
The utility model embodiment is related to a kind of demercuration adsorbent injection apparatus and uses the demercuration adsorbent injection apparatus
Coal-fired plant flue gas processing system, can at least solve the segmental defect of the prior art.
The utility model embodiment is related to a kind of demercuration adsorbent injection apparatus, including more of main jet cylinder and length not etc.
Spraying gun, each spraying gun are parallelly mounted to the discharge end of the main jet cylinder, the separate main jet of each spraying gun
One end of cylinder is equipped with nozzle.
As one of embodiment, the entrance of each spraying gun is equipped with a control valve.
As one of embodiment, the discharge end of the main jet cylinder is equipped with flow control valve.
As one of embodiment, the flow control valve includes two pieces and crosses aerofoil, and the two aerofoil plate faces of crossing mutually recline
And be coaxially flush-mounted in the main jet cylinder, at least one of aerofoil of crossing can be rotated around the main jet cylinder axis, and two mistakes
In aerofoil relative rotational motion, the mistake air holes of the two is interlaced or is overlapped.
Axial along the main jet cylinder as one of embodiment, the spacing between every adjacent two nozzle is identical.
As one of embodiment, the discharge end of the main jet cylinder is in gradually-reducing shape.
As one of embodiment, the discharge end of the main jet cylinder is hemispherical dome structure.
As one of embodiment, each nozzle is connected by an outlet spouts with the corresponding spraying gun, described
Outlet spouts are installed vertically on the corresponding spraying gun.
The utility model embodiment is related to a kind of coal-fired plant flue gas processing system, including the flue gas connecting with coal-burning boiler
Pipeline is disposed with electric precipitator on the flue gas pipeline, further includes demercuration adsorbent injection apparatus as described above, the main jet
Cylinder is sequentially arranged with the electric precipitator along flue gas circulating direction, and the main jet cylinder is connected with demercuration adsorbent organization of supply, respectively
The spraying gun is inserted into the flue of corresponding position.
As one of embodiment, the demercuration adsorbent organization of supply includes the dirt material for capturing to the electric precipitator
The magnetic bead outlet of the magnetic separator of magnetic separation, the magnetic separator is connected to the adsorbent entrance of the main jet cylinder, and the main jet cylinder is also set
There is carrier gas inlet.
The utility model embodiment at least has the following beneficial effects:
Demercuration adsorbent injection apparatus provided by the utility model, using on main jet cylinder bifurcated connect multiple spraying guns
Mode, each spraying gun are single spraying mouth structure, since basic only stretched to by each spraying gun sprays demercuration adsorbent in flue, are sprayed
Injection device is very small to the resistance of flow of flue gas in flue, therefore can solve the multiple multi-port sprays of setting existing in the prior art
The technical issues of flue gas in flue flow resistance increases when shooting cylinder, flue crushing increases；And do not waited since multiple length are arranged
Spraying gun, spray regime can cover the entire height of flue, are arranged in parallel in flue along cross section and cover above-mentioned demercuration more
When sorbent injection device, while not increasing smoke flow resistance, wider demercuration adsorbent flow trace can be obtained,
Solve absorption existing in the prior art when being arranged in parallel the injection apparatus of multiple direct-injection cylinder single jets along cross section in flue
The very narrow technical problem of agent flow trace.Therefore, flow of flue gas in flue can reduce using this demercuration adsorbent injection apparatus
Resistance, while being conducive to demercuration adsorbent and being mixed with flue gas and diffuse to entire flue cross section, to improve adsorption efficiency.
Detailed description of the invention
In order to illustrate the embodiment of the utility model or the technical proposal in the existing technology more clearly, below will be to embodiment
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the utility model, for those of ordinary skill in the art, in the premise not made the creative labor
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1 is the structural schematic diagram of demercuration adsorbent injection apparatus provided by the embodiment of the utility model.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work
All other embodiment obtained, fall within the protection scope of the utility model.
Embodiment one
Such as Fig. 1, the utility model embodiment provides a kind of demercuration adsorbent injection apparatus, including main jet cylinder 11 and length are not
Deng more spraying guns 12, each spraying gun 12 is parallelly mounted to the discharge end of the main jet cylinder 11, each spraying gun
12 one end far from the main jet cylinder 11 is equipped with nozzle.Specifically, multiple discharge ports are opened up in 11 discharge end of main jet cylinder, each
Discharge port connects an above-mentioned spraying gun 12；Wherein, the axial direction of each spraying gun 12 is axial parallel with main jet cylinder 11.It is preferred that
Ground, such as Fig. 1, each nozzle are connected by an outlet spouts 121 with corresponding spraying gun 12, and outlet spouts 121 are installed vertically on
On corresponding spraying gun 12, above-mentioned outlet spouts 121 are preferably to be integrally formed with spraying gun 12, can also be by above-mentioned spraying gun 12
See L shape as；In actual installation, the injection direction of said nozzle is identical as flue gas circulating direction or contrary namely it is above-mentioned go out
The axial direction of mouth jet pipe 121 is parallel with flue gas circulating direction in flue, cigarette in the axial direction and flue of above-mentioned 11/ spraying gun 12 of main jet cylinder
Gas circulating direction is vertical.
Demercuration adsorbent injection apparatus provided in this embodiment, using the multiple spraying guns 12 of bifurcated connection on main jet cylinder 11
Mode, each spraying gun 12 is single spraying mouth structure, since basic only stretched in flue by each spraying gun 12 is sprayed demercuration and inhaled
Attached dose, injection apparatus is very small to the resistance of flow of flue gas in flue, therefore it is multiple to solve setting existing in the prior art
The technical issues of flue gas in flue flow resistance increases when multi-port spraying canister, flue crushing increases；And since multiple length are arranged
The spraying gun 12 that degree does not wait, spray regime can cover the entire height of flue, are arranged in parallel and cover more along cross section in flue
When above-mentioned demercuration adsorbent injection apparatus, while not increasing smoke flow resistance, wider demercuration absorption can be obtained
Agent flow trace solves existing in the prior art to be arranged in parallel the injection of multiple direct-injection cylinder single jets in flue along cross section
Adsorbent flow trace very narrow technical problem when device.Therefore, flue can reduce using this demercuration adsorbent injection apparatus
Interior smoke flow resistance, while being conducive to demercuration adsorbent and being mixed with flue gas and diffuse to entire flue cross section, to improve absorption
Efficiency.Demercuration adsorbent injection apparatus structure provided in this embodiment is simple, and manufacturing cost is low, demercuration adsorbent particle and carrier gas
It is sufficiently mixed in advance in main jet cylinder 11 uniformly, which can play the role of fluidized bed, to improve demercuration suction
The attached dose of dispersing uniformity in flue, it is preferable that demercuration adsorbent mixes with flue gas effect.
In a wherein specific embodiment, the entrance of each spraying gun 12 is equipped with a control valve, passes through the control
Valve processed can control the inlet amount of corresponding spraying gun 12, so as to match Flow Field Distribution that may be present in flue it is uneven or
The case where exhaust gas volumn fluctuates, for example, the on-off of spraying gun 12 can be controlled by the control valve, to adjust material spray according to demand
The quantity of rifle 12 improves the operation flexibility of demercuration system.Additionally, it is preferred that be each spraying gun 12 of setting being detachably to be assemblied in master
In spray canister 11, so as to adjust the quantity of spraying gun 12 according to field demand, removing discharge port that spraying gun 12 leaves unused can
To be blocked by corresponding closeouts.
In another specific embodiment, the discharge end of the main jet cylinder 11 is equipped with flow control valve, which can be with
Guarantee the consistency of each 12 inlet amounies of spraying gun/the amount of injection, to improve the distributing homogeneity of demercuration adsorbent in flue cross section.It is excellent
Selection of land, flow control valve include two pieces and cross aerofoil, and the two aerofoil plate faces of crossing mutually recline and coaxially flush-mounted in the main jet
In cylinder 11, at least one of aerofoil of crossing can be rotated around 11 axis of main jet cylinder, and two cross in aerofoil relative rotational motion,
The mistake air holes of the two is interlaced or is overlapped.Uniformly distributed multiple air holes excessively, constitute an air distribution plate, guarantee the main jet on above-mentioned aerofoil excessively
Cylinder 11 goes out the uniformity in stock ground；The change that the overlapping area of the mistake air holes on aerofoil is crossed by two pieces, just changes draught area,
Achieve the purpose that flow is adjusted.
It is possible to further install air-valve in the air inlet of above-mentioned main jet cylinder 11 (namely one end far from its discharge end),
To control intake, the amount of injection of demercuration adsorbent is preferably deployed.
Further, as Fig. 1, the discharge end 111 of the main jet cylinder 11 are in gradually-reducing shape, gas velocity can be increased, namely
The jet velocity for improving demercuration adsorbent reaches better disperse effect.Wherein it is preferred to which the discharge end 111 is hemispherical
Structure, each spraying gun 12 is installed on the hemispherical cylinder end 111, while increasing gas velocity, it is ensured that is entered
The uniformity of the demercuration adsorbent of each spraying gun 12.
The structure of above-mentioned demercuration adsorbent injection apparatus, such as Fig. 1 are advanced optimized, each spraying gun 12 is dispersed in main jet cylinder 11
On, namely not along the mode that flue length direction or flue width direction are arranged successively, but have certain dislocation arrangement knot
Structure, this mode are conducive to generate disturbance to flue gas, increase the turbulent flow effect of flue gas, and turbulent flue gas and the demercuration adjacent to injection are inhaled
Attached dose of mixed effect more preferably, to improve demercuration effect and efficiency.It is further preferred that it is axial along the main jet cylinder 11, often
Spacing between adjacent two nozzle is identical, generally, above-mentioned main jet cylinder 11 is vertically arranged namely the axial direction of main jet cylinder 11/
The axial direction of each spraying gun 12 be it is vertical, then, and the difference in height between each adjacent two nozzle be it is identical, be conducive to demercuration adsorbent
The uniformity that is distributed in flue simultaneously diffuses to entire flue cross section.
Embodiment two
The utility model embodiment is related to a kind of coal-fired plant flue gas processing system, including the flue gas connecting with coal-burning boiler
Pipeline is disposed with demercuration adsorbent injection apparatus provided by electric precipitator and above-described embodiment one on the flue gas pipeline,
The main jet cylinder 11 is sequentially arranged with the electric precipitator along flue gas circulating direction, and the main jet cylinder 11 is connected with demercuration adsorbent
Organization of supply, each spraying gun 12 are inserted into the flue of corresponding position.Wherein it is preferred to above-mentioned demercuration adsorbent
Injection apparatus has more sets, and is sequentially arranged in the same cross section of flue, to reach demercuration adsorbent flow trace covering cigarette
Subject to the entire cross section in road.
Above-mentioned demercuration adsorbent can be using materials such as conventional active carbons, in the present embodiment, using magnetic bead.It is removed in electricity
Before dirt device, magnetic bead is sprayed by above-mentioned demercuration adsorbent injection apparatus captures nonvalent mercury in flue, subsequent electric precipitator will
Magnetic bead and fine particle flying dust are captured from flue gas, realize the removing to mercury in flue gas.The dirt material of electric precipitator capture carries out magnetic separation
Afterwards, magnetic bead can be obtained, after mercury of the magnetic bead activation/regeneration and Resource recoveryization that magnetic separation obtains using release, may be implemented
Magnetic bead recycles.To be easy-to-understand to, above-mentioned demercuration adsorbent organization of supply includes for capturing to electric precipitator
The magnetic bead outlet of the magnetic separator of dirt material magnetic separation, magnetic separator is connected to the adsorbent entrance of main jet cylinder 11, and main jet cylinder 11 is additionally provided with load
Gas entrance.
It is further preferred that the also settable flue gas on the flue before above-mentioned demercuration adsorbent injection apparatus position
Denitrification apparatus, the also settable flue gas desulfurization device on the flue after above-mentioned electric precipitator, equipment for denitrifying flue gas and flue gas are de-
Sulphur device is this field routine techniques, is not described further herein.
As preferred embodiment, the carrier gas being passed through in above-mentioned main jet cylinder 11 is the flue after electric precipitator dedusting
Interior flue gas, i.e., other on above-mentioned flue gas pipeline to be connected to bypass pipe, which is connected to the carrier gas inlet of main jet cylinder 11；?
The bypass pipe is equipped with heat exchanger, is exchanged heat using the combustion air of the flue gas and coal-burning boiler to circulate in bypass pipe, on the one hand may be used
To improve the temperature of combustion air, the combustion efficiency of coal dust in coal-burning boiler is improved, reduces energy consumption, on the other hand, carrier gas temperature
Lower than the flue-gas temperature of demercuration station, the temperature of flue gas can be reduced after spraying into flue, can effectively improve demercuration adsorbent
Adsorption efficiency.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Within the spirit and principle of utility model, any modification, equivalent replacement, improvement and so on should be included in the utility model
Protection scope within.
Claims (10)
1. a kind of demercuration adsorbent injection apparatus, it is characterised in that: including the more spraying guns of main jet cylinder and length not etc., each institute
The discharge end that spraying gun is parallelly mounted to the main jet cylinder is stated, one end far from the main jet cylinder of each spraying gun is equipped with
Nozzle.
2. demercuration adsorbent injection apparatus as described in claim 1, it is characterised in that: the entrance of each spraying gun is set
There is a control valve.
3. demercuration adsorbent injection apparatus as described in claim 1, it is characterised in that: the discharge end of the main jet cylinder is equipped with stream
Adjustable valve.
4. demercuration adsorbent injection apparatus as claimed in claim 3, it is characterised in that: the flow control valve includes two pieces of mistakes
Aerofoil, the two aerofoil plate faces excessively mutually recline and are coaxially flush-mounted in the main jet cylinder, at least one of aerofoil excessively
It can be rotated around the main jet cylinder axis, and two cross in aerofoil relative rotational motion, the mistake air holes of the two is interlaced or is overlapped.
5. demercuration adsorbent injection apparatus as described in claim 1, it is characterised in that: it is axial along the main jet cylinder, per adjacent
Spacing between two nozzles is identical.
6. demercuration adsorbent injection apparatus as described in claim 1, it is characterised in that: the discharge end of the main jet cylinder is in tapered
Shape.
7. demercuration adsorbent injection apparatus as claimed in claim 6, it is characterised in that: the discharge end of the main jet cylinder is hemisphere
Shape structure.
8. demercuration adsorbent injection apparatus as described in claim 1, it is characterised in that: each nozzle passes through an outlet spray
Pipe is connected with the corresponding spraying gun, and the outlet spouts are installed vertically on the corresponding spraying gun.
9. a kind of coal-fired plant flue gas processing system, including the flue gas pipeline being connect with coal-burning boiler, cloth on the flue gas pipeline
Be equipped with electric precipitator, it is characterised in that: further include such as demercuration adsorbent injection apparatus described in any item of the claim 1 to 8,
The main jet cylinder is sequentially arranged with the electric precipitator along flue gas circulating direction, and the main jet cylinder is connected with demercuration adsorbent supply
Mechanism, each spraying gun are inserted into the flue of corresponding position.
10. coal-fired plant flue gas processing system as claimed in claim 9, it is characterised in that: the demercuration adsorbent supplies machine
Structure includes the magnetic separator of the dirt material magnetic separation for capturing to the electric precipitator, magnetic bead outlet and the main jet of the magnetic separator
The adsorbent entrance connection of cylinder, the main jet cylinder are additionally provided with carrier gas inlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820808982.0U CN208810359U (en) | 2018-05-29 | 2018-05-29 | Demercuration adsorbent injection apparatus and coal-fired plant flue gas processing system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820808982.0U CN208810359U (en) | 2018-05-29 | 2018-05-29 | Demercuration adsorbent injection apparatus and coal-fired plant flue gas processing system |
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| Publication Number | Publication Date |
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| CN208810359U true CN208810359U (en) | 2019-05-03 |
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| CN201820808982.0U Active CN208810359U (en) | 2018-05-29 | 2018-05-29 | Demercuration adsorbent injection apparatus and coal-fired plant flue gas processing system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889493A (en) * | 2018-05-29 | 2018-11-27 | 武汉汉缘和环保科技有限公司 | Demercuration adsorbent injection apparatus and coal-fired plant flue gas processing system |
-
2018
- 2018-05-29 CN CN201820808982.0U patent/CN208810359U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108889493A (en) * | 2018-05-29 | 2018-11-27 | 武汉汉缘和环保科技有限公司 | Demercuration adsorbent injection apparatus and coal-fired plant flue gas processing system |
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