CN105983319B - Multi-layer sprinkling device - Google Patents
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- CN105983319B CN105983319B CN201510052350.7A CN201510052350A CN105983319B CN 105983319 B CN105983319 B CN 105983319B CN 201510052350 A CN201510052350 A CN 201510052350A CN 105983319 B CN105983319 B CN 105983319B
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Abstract
The present invention relates to a kind of Multi-layer sprinkling device, mainly solves the problem of arrangement ratio of the cooling tower Multi-layer sprinkling of ammoxidation reaction gas present in prior art is unreasonable, and cooling effect is bad, and ammonia neutralization is bad.The present invention is by using a kind of Multi-layer sprinkling device, the Multi-layer sprinkling layer that spray equipment is made up of shower nozzle by geometry arrangement, the distance between Multi-layer sprinkling layer is to be stepped up from top to bottom, the distance between upper spraying layer is 1 1.5 times of technical scheme of the distance between next spraying layer, preferably solves the problem, available in the commercial plant of ammoxidation reaction.
Description
Technical field
The present invention relates to a kind of Multi-layer sprinkling device, the neutralization especially suitable for ammonia in ammoxidation reaction.
Background technology
In ammoxidation reaction device, contain unreacted ammonia in the reacting gas of fluidized-bed reactor outlet, it is necessary to the greatest extent
Removed soon, and remove and want thorough, otherwise ammonia, which enters follow-up system, will cause the increase of system pH value, cause loss of product to increase
Add, influence the rate of recovery of product, while also result in the polymer plugging of tower, heat exchanger, pipeline etc., influence the normal fortune of device
OK.In existing apparatus, the distance between Multi-layer sprinkling layer typically presses contour arrangement, the ammonia not in reacting gas from it is lower to
On the situation of change that gradually decreases of uphill process, targetedly carry out spraying layer arrangement, it is impossible to rapidly remove ammonia, because
This, unreacted ammonia quick, thoroughly in neutralization reaction gas reduces the consumption of device for the cycle of operation of extension fixture,
Be of great practical significance and economic benefit.
Document US3885928 describes recovery and the refining system of a kind of alkene nitrile, and the purpose of wherein emergency cooling process is a side
Reactor effluent is cooled to certain temperature by face, is on the other hand that unreacted ammonia and reaction generate in reactor effluent
Polymer and heavy impurity.Technical scheme employed in the document is to be used as chilling liquid, aqueous, sour, polymerization by the use of water and sulfuric acid
The bottoms of thing and other impurity is discharged from chilling system.Liquid containing ammonium sulfate, heavy impurity, a small amount of lightweight have in these bottoms
Machine thing and water.Because ammonia conversion ratio is uncontrolled, make to contain unreacted ammonia in reacting gas, unreacted ammonia is sent out with acrylonitrile
Raw reaction, reduce the refined recovery rate of acrylonitrile.It must quickly, thoroughly remove unreacted ammonia.
The content of the invention
One of technical problems to be solved by the invention are the neutralizations to ammoxidation reaction gas present in prior art
Tower Multi-layer sprinkling device is unreasonable, and cooling effect is bad, and ammonia neutralization is bad, and ammonia enters follow-up tower, heat exchanger and pipeline
System, follow-up equipment, pipeline is caused to block, device consumption increase, a kind of the problem of cycle of operation shortens, there is provided new spray dress
Put.The device has good cooling results, and ammonia neutralization is good, device consumption is reduced, the advantages of the extension fixture cycle of operation.
The two of the technical problems to be solved by the invention are the neutralizations to ammoxidation reaction gas present in prior art
The neutralization method of tower is unreasonable, and cooling effect is bad, and ammonia neutralization is bad, and ammonia enters follow-up tower, heat exchanger and pipeline system
System, cause follow-up equipment, pipeline block, device consumption increase, the cycle of operation shorten the problem of, there is provided a kind of new neutralization side
Method.This method has good cooling results, and ammonia neutralization is good, device consumption is reduced, the advantages of the extension fixture cycle of operation.
To solve one of above-mentioned technical problem, the technical solution adopted by the present invention is as follows：A kind of Multi-layer sprinkling device, including
Housing, reaction gas inlet and outlet, reacting gas neutralizer entrance and exit, reaction gas inlet are arranged on sprinkling equipment
Bottom, reaction gas outlet are arranged on the top of sprinkling equipment, and reacting gas neutralizer entrance is provided in reaction gas inlet
Top, neutralizer outlet are arranged on sprinkling equipment bottom, are set above spraying layer and remove mist eliminator, wherein reacting gas neutralizer enters
Mouth sets the distance between the Multi-layer sprinkling layer, Multi-layer sprinkling layer being made up of shower nozzle by geometry arrangement from top to bottom for progressively
The distance between increase, upper spraying layer are 1.05-1.5 times of the distance between next spraying layer.
In above-mentioned technical proposal, preferable technical scheme is that the distance between spraying layer is next on Multi-layer sprinkling layer
1.05-1.4 times of the distance between spraying layer, preferred scope are 1.1-1.2 times.
In above-mentioned technical proposal, preferable technical scheme is that the preferred scope of the spraying layer is 3~8 layers, more preferably model
Enclose for 3~4 layers；The preferred scope of the arrangement density of every layer of spraying layer shower nozzle is 1~4 shower nozzle/m2, more preferably scope is 1~2
Individual shower nozzle/m2；The geometry of every layer of water-spraying fabric is included in square, rectangle, equilateral triangle, concentric circles annular at least
It is a kind of；Described shower nozzle includes at least one of hollow cone, solid-cone, screw type, air atomizing shower nozzle.
In above-mentioned technical proposal, preferable technical scheme is that demister is set above spraying layer, and demister includes board-like
At least one of demister, wire mesh demister, bubble cap tray, sieve plate, filler；Demister includes bubble cap tray, the theoretical plate of sieve plate
Several preferred scopes is 1~5 piece, and more preferably scope is 1~2 piece；Demister be the preferred scope of the number of theoretical plate of filler be 1~
5 pieces, more preferably scope is 1~2 piece.
In above-mentioned technical proposal, preferable technical scheme is described reacting gas neutralizer spraying layer lower section, reaction gas
It is 1~10 piece that body entrance top, which sets the preferred scope of the theoretical plate of column plate or filler, and more preferably scope is 2~6 pieces；Described
Column plate is at least one of float valve, sieve aperture, bubble-cap, guiding sieve aperture；Described filler be grid, regular screen waviness packings,
At least one of Raschig ring, Pall ring.
In above-mentioned technical proposal, preferable technical scheme is the distance between Multi-layer sprinkling layer 0.7-1.3 rice, every layer of spray
Drenching layer sets supervisor, branch pipe, the 0.2-0.5 of short tube, the wherein a diameter of predominant tube diameter of branch pipe；A diameter of pipe diameter of short tube
0.3-0.5, demister lower section set 3~8 layers of spraying layer sprayed upwards.
In above-mentioned technical proposal, preferable technical scheme is to set gas distributor, gas distribution in reaction gas inlet
Type formula includes one kind in semicircle cast, pipe distributor, dendroid porous type, biserial vane type.
In above-mentioned technical proposal, preferable technical scheme is that liquid distribution trough, liquid point are set above reaction gas inlet
Cloth device includes one kind in tube and tank type, hole slot formula, trough-tray liquid distributor.
To solve the two of above-mentioned technical problem, the technical solution adopted by the present invention is as follows：
A kind of neutralization method, using any one above-mentioned spray equipment, neutralization method includes the following steps：
A) be 50~200 DEG C by temperature, with the weight of reacting gas than the neutralizer for 0.3~20 from by shower nozzle by geometry
Sprayed in the neutralizer spraying layer of shape arrangement composition, with reacting gas counter current contacting；
B) reacting gas after neutralizing is entered above spraying layer with 0.2~5m/s speed, is entered after mist eliminator and is absorbed
System.
In above-mentioned technical proposal, preferable technical scheme is the reacting gas neutralizer temperature contacted with reacting gas
Preferred scope is 50~150 DEG C, and more preferably scope is 70~120 DEG C；Reacting gas cleaning solution and reacting gas weight than it is excellent
It is 4.5~18 to select scope, and more preferably scope is 5~16；The preferred scope of reacting gas speed above into spraying layer is 0.8
~2m/s；
In above-mentioned technical proposal, preferable technical scheme is that the spray flux of Multi-layer sprinkling layer is to gradually reduce from top to bottom,
The spray flux of a upper spraying layer is 0.5~0.99, preferred scope 0.7-0.99 of next spraying layer spray flux by weight, more
Preferred scope is 0.8-0.9.
Due to the Multi-layer sprinkling device and neutralization method of the present invention, spray equipment includes housing, reaction gas inlet and gone out
Mouth, reacting gas neutralizer entrance and exit, wherein reacting gas neutralizer entrance are set presses geometry arrangement group by shower nozzle
Into the distance between Multi-layer sprinkling layer, Multi-layer sprinkling layer from top to bottom to be stepped up, reaction gas inlet is arranged on spray
The bottom of equipment, reaction gas outlet are arranged on the top of sprinkling equipment, and reacting gas neutralizer entrance is provided in reaction gas
Body entrance top, neutralizer outlet are arranged on sprinkling equipment bottom, are set above spraying layer and remove mist eliminator, using certain temperature,
Sprayed with reacting gas in the reacting gas neutralizer of certain weight ratio from the spraying layer being made up of shower nozzle by geometry arrangement
Go out, washed with reacting gas counter current contacting, and at the appropriate speed by above spraying layer, gas-liquid contact washing is abundant, effectively
Ground eliminates the ammonia in reacting gas, reduces the consumption level of device, extends the cycle of operation of device, improves spray and sets
Standby cooling effect, due to being provided with the spraying layer sprayed upwards, upward hydroblasting defoaming plate and demister below demister
Polymer in product, maintain the cleaning of defoaming plate.
The present invention is applied to the neutralization reaction of ammoxidation reaction ammonia in gas, and it is anti-to be equally applicable to fluidized-bed reactor outlet
Answer the cooling of gas and the removal of the catalyst fines carried secretly and heavy constituent in ammoxidation reaction gas.
Using the Multi-layer sprinkling device of the present invention, 4 layers are set to be arranged by hollow cone shower nozzle by square in spray equipment
The reacting gas neutralizer spraying layer of composition, the arrangement density of shower nozzle is 2 shower nozzle/m2, the distance between a upper spraying layer is
The 1.2 of the distance between next spraying layer, spraying layer top sets the bubble cap tray of 2 pieces of theoretical plates as demister, in reaction gas
The grid packing of 6 pieces of theoretical plates is set below body cleaning solution spraying layer, above reaction gas inlet, and reaction gas inlet sets tree
Dendritic porous type distributor, the clearance of the ammonia after spray equipment shower nozzle spray in reacting gas reach 99.9%, spray dress
To put and follow-up system is without blocking, heat exchanger heat transfer effect is constant, and device consumption keeps constant, extends the cycle of operation of device,
Achieve preferable technique effect.
Brief description of the drawings
Fig. 1 is the spray equipment schematic diagram of the neutralization reaction of the present invention；
1 is spray equipment in Fig. 1, and 2 be gas distributor, and 3 be reaction gas inlet, and 5 be that reacting gas neutralizer sprays
Layer, 6 be demister, and 7 be reaction gas outlet, and 8 be reacting gas neutralizer entrance, and 9 be that neutralizer exports.
The Multi-layer sprinkling device of the present invention and the technical process of neutralization method are as follows：Reacting gas is from reaction gas inlet 3
Into the bottom of spray equipment 1, in the reacting gas sprayed after gas distributor 2 and from reacting gas neutralizer spraying layer 5
Counter current contacting neutralization is carried out with liquid 8, the reacting gas after neutralization enters after demister 6 removes subsequent absorption from reaction gas outlet 7
Tower, neutralize waste liquid 9 and remove wastewater treatment equipment.
Below by specific embodiment, the invention will be further elaborated.
Embodiment
【Comparative example 1】
Chilling tower reacting gas neutralizer sprays from Multi-layer sprinkling layer to react with reacting gas counter current contacting, spraying layer etc.
Away from distribution, the neutralization of ammonia is incomplete in chilling tower outlet gas phase, and the clearance of ammonia reaches 95%, and unneutralized ammonia enters subsequently
In system, the polymerization losses increase of organic matter, cause follow-up tower, heat exchanger, pipeline to block, influence the normal operation of device,
Shorten the cycle of operation.
【Comparative example 2】
Chilling tower reacting gas neutralizer sprays from individual layer spraying layer to react with reacting gas counter current contacting, and chilling tower goes out
The neutralization of ammonia is incomplete in implication phase, and the clearance of ammonia reaches 93%, and unneutralized ammonia is entered in follow-up system, organic matter
Polymerization losses increase, cause follow-up tower, heat exchanger, pipeline to block, influence the normal operation of device, shorten the cycle of operation.
【Embodiment 1】
Using the Multi-layer sprinkling device of the present invention, 4 layers are set to be arranged by hollow cone shower nozzle by square in spray equipment
The reacting gas neutralizer spraying layer of composition, the arrangement density of shower nozzle is 2 shower nozzle/m2, the distance between a upper spraying layer is
The 1.2 of the distance between next spraying layer, spraying layer top sets the bubble cap tray of 2 pieces of theoretical plates as demister, in reaction gas
The grid packing of 6 pieces of theoretical plates is set below body cleaning solution spraying layer, above reaction gas inlet, and reaction gas inlet sets tree
Dendritic porous type distributor, the clearance of the ammonia after spray equipment shower nozzle spray in reacting gas reach 99.0%, spray dress
To put and follow-up system is without blocking, heat exchanger heat transfer effect is constant, and device consumption keeps constant, extends the cycle of operation of device,
Achieve preferable technique effect.
【Embodiment 2】
Using the Multi-layer sprinkling device of the present invention, 8 layers are set to be arranged by hollow cone shower nozzle by square in spray equipment
The reacting gas neutralizer spraying layer of composition, the arrangement density of shower nozzle is 4 shower nozzle/m2, the distance between a upper spraying layer is
The 1.5 of the distance between next spraying layer, spraying layer top sets the bubble cap tray of 3 pieces of theoretical plates as demister, in reaction gas
The grid packing of 5 pieces of theoretical plates is set below body cleaning solution spraying layer, above reaction gas inlet, and reaction gas inlet sets tree
Dendritic porous type distributor, the clearance of the ammonia after spray equipment shower nozzle spray in reacting gas reach 99.2%, spray dress
To put and follow-up system is without blocking, heat exchanger heat transfer effect is constant, and device consumption keeps constant, extends the cycle of operation of device,
Achieve preferable technique effect.
【Embodiment 3】
A kind of Multi-layer sprinkling device, including the outlet of housing, reaction gas inlet, reaction gas inlet, reacting gas neutralize
Liquid entrance, the outlet of reacting gas neutralizer, reaction gas inlet are arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on
The top of sprinkling equipment, reacting gas neutralizer entrance are provided in above reaction gas inlet, the outlet of reacting gas neutralizer
Sprinkling equipment bottom is arranged on, demister is set above spraying layer,
Wherein, reacting gas neutralizer entrance sets the Multi-layer sprinkling layer being made up of shower nozzle by geometry arrangement, multilayer
For the distance between spraying layer from top to bottom to be stepped up, the distance between upper spraying layer is the distance between next spraying layer
1.1 times.
The spraying layer that reacting gas neutralizer entrance is set is 3 layers；The arrangement density of every layer of shower nozzle is 2 shower nozzle/m2；Often
The geometry of layer water-spraying fabric includes square, equilateral triangle；Described shower nozzle includes hollow cone；
Demister is set above the spraying layer, and demister is bubble cap tray, and 2 layers of spray sprayed upwards are set below demister
Layer.
Every layer of spraying layer sets supervisor, branch pipe, the 0.2 of short tube, the wherein a diameter of predominant tube diameter of branch pipe；A diameter of of short tube
The 0.3 of pipe diameter.
The clearance of ammonia after spray equipment shower nozzle spray in reacting gas reaches 99.6%.
【Embodiment 4】
A kind of Multi-layer sprinkling device, including the outlet of housing, reaction gas inlet, reaction gas inlet, reacting gas neutralize
Liquid entrance, the outlet of reacting gas neutralizer, reaction gas inlet are arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on
The top of sprinkling equipment, reacting gas neutralizer entrance are provided in above reaction gas inlet, the outlet of reacting gas neutralizer
Sprinkling equipment bottom is arranged on, demister is set above spraying layer,
Wherein, reacting gas neutralizer entrance sets the Multi-layer sprinkling layer being made up of shower nozzle by geometry arrangement, multilayer
For the distance between spraying layer from top to bottom to be stepped up, the distance between upper spraying layer is the distance between next spraying layer
1.45 times.
The spraying layer that reacting gas neutralizer entrance is set is 7 layers；The arrangement density of every layer of shower nozzle is 4 shower nozzle/m2；Often
The geometry of layer water-spraying fabric includes equilateral triangle, concentric circles annular；Described shower nozzle is air atomizing shower nozzle；
Demister is set above the spraying layer, and demister is board-like demister, and the number of plates 2, demister lower section sets 1
The spraying layer that layer sprays upwards.
Every layer of spraying layer sets supervisor, branch pipe, the 0.5 of short tube, the wherein a diameter of predominant tube diameter of branch pipe；A diameter of of short tube
The 0.5 of pipe diameter.
The clearance of ammonia after spray equipment shower nozzle spray in reacting gas reaches 99.8%.
【Embodiment 5】
A kind of Multi-layer sprinkling device, including the outlet of housing, reaction gas inlet, reaction gas inlet, reacting gas neutralize
Liquid entrance, the outlet of reacting gas neutralizer, reaction gas inlet are arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on
The top of sprinkling equipment, reacting gas neutralizer entrance are provided in above reaction gas inlet, the outlet of reacting gas neutralizer
Sprinkling equipment bottom is arranged on, demister is set above spraying layer,
Wherein, reacting gas neutralizer entrance sets the Multi-layer sprinkling layer being made up of shower nozzle by geometry arrangement, multilayer
For the distance between spraying layer from top to bottom to be stepped up, the distance between upper spraying layer is the distance between next spraying layer
1.1 times.
Using above-mentioned Multi-layer sprinkling device, neutralization method is：By temperature be 200 DEG C and the weight ratio of reacting gas is 20
Neutralizer from by shower nozzle by being sprayed in the neutralizer spraying layer that forms of geometry arrangement, with reacting gas counter current contacting；
Reacting gas after neutralization is entered above spraying layer with 5m/s speed, and subsequent absorption system is entered after mist eliminator
System.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 150 DEG C；Reacting gas neutralizer with it is anti-
The weight ratio for answering gas is 18, into spraying layer above the speed of reacting gas be 2m/s；The circulation of reacting gas neutralizer makes
With.
The clearance of ammonia after spray equipment shower nozzle spray in reacting gas reaches 99.9%.
【Embodiment 6】
A kind of Multi-layer sprinkling device, including the outlet of housing, reaction gas inlet, reaction gas inlet, reacting gas neutralize
Liquid entrance, the outlet of reacting gas neutralizer, reaction gas inlet are arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on
The top of sprinkling equipment, reacting gas neutralizer entrance are provided in above reaction gas inlet, the outlet of reacting gas neutralizer
Sprinkling equipment bottom is arranged on, demister is set above spraying layer,
Wherein, reacting gas neutralizer entrance sets the Multi-layer sprinkling layer being made up of shower nozzle by geometry arrangement, multilayer
For the distance between spraying layer from top to bottom to be stepped up, the distance between upper spraying layer is the distance between next spraying layer
1.2 times.
Using above-mentioned Multi-layer sprinkling device, neutralization method is：By temperature be 100 DEG C and the weight ratio of reacting gas is 10
Neutralizer from by shower nozzle by being sprayed in the neutralizer spraying layer that forms of geometry arrangement, with reacting gas counter current contacting；
Reacting gas after neutralization is entered above spraying layer with 2m/s speed, and subsequent absorption system is entered after mist eliminator
System.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 100 DEG C；Reacting gas neutralizer with it is anti-
The weight ratio for answering gas is 10, into spraying layer above the speed of reacting gas be 1m/s；The circulation of reacting gas neutralizer makes
With.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 120 DEG C；Reacting gas cleaning solution with it is anti-
The weight ratio for answering gas is 16.
The spray flux of described Multi-layer sprinkling layer is from top to bottom to gradually reduce, and the spray flux of Multi-layer sprinkling layer is by weight
The spray flux of a upper spraying layer is the 0.7 of next spraying layer spray flux.
The clearance of ammonia after spray equipment shower nozzle spray in reacting gas reaches 99.8%.
【Embodiment 7】
A kind of Multi-layer sprinkling device, including the outlet of housing, reaction gas inlet, reaction gas inlet, reacting gas neutralize
Liquid entrance, the outlet of reacting gas neutralizer, reaction gas inlet are arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on
The top of sprinkling equipment, reacting gas neutralizer entrance are provided in above reaction gas inlet, the outlet of reacting gas neutralizer
Sprinkling equipment bottom is arranged on, demister is set above spraying layer,
Wherein, reacting gas neutralizer entrance sets the Multi-layer sprinkling layer being made up of shower nozzle by geometry arrangement, multilayer
For the distance between spraying layer from top to bottom to be stepped up, the distance between upper spraying layer is the distance between next spraying layer
1.2 times.
Using above-mentioned Multi-layer sprinkling device, neutralization method is：By temperature be 100 DEG C and the weight ratio of reacting gas is 10
Neutralizer from by shower nozzle by being sprayed in the neutralizer spraying layer that forms of geometry arrangement, with reacting gas counter current contacting；
Reacting gas after neutralization is entered above spraying layer with 2m/s speed, and subsequent absorption system is entered after mist eliminator
System.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 100 DEG C；Reacting gas neutralizer with it is anti-
The weight ratio for answering gas is 10, into spraying layer above the speed of reacting gas be 1m/s；The circulation of reacting gas neutralizer makes
With.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 120 DEG C；Reacting gas cleaning solution with it is anti-
The weight ratio for answering gas is 16.
The spray flux of described Multi-layer sprinkling layer is to gradually reduce from top to bottom, by weight the spray flux of a upper spraying layer
For the 1 of next spraying layer spray flux.
The clearance of ammonia after spray equipment shower nozzle spray in reacting gas reaches 99.5%.
【Embodiment 8】
Multi-layer sprinkling device, including the outlet of housing, reaction gas inlet, reaction gas inlet, reacting gas neutralizer enter
Mouth, the outlet of reacting gas neutralizer, reaction gas inlet are arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on spray
The top of equipment, reacting gas neutralizer entrance are provided in above reaction gas inlet, and the outlet of reacting gas neutralizer is set
In sprinkling equipment bottom, demister is set above spraying layer, wherein, reacting gas neutralizer entrance is set presses geometric form by shower nozzle
The distance between the Multi-layer sprinkling layer, Multi-layer sprinkling layer of shape arrangement composition is from top to bottom to be stepped up, between a upper spraying layer
Distance be 1.05 times of the distance between next spraying layer.
Using above-mentioned Multi-layer sprinkling device, neutralization method is：Be 100 DEG C by temperature, with the weight of reacting gas than for 5
Neutralizer sprays from the neutralizer spraying layer being made up of shower nozzle by geometry arrangement, with reacting gas counter current contacting；
Reacting gas after neutralization is entered above spraying layer with 4m/s speed, and subsequent absorption system is entered after mist eliminator
System.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 150 DEG C；Reacting gas neutralizer with it is anti-
The weight ratio for answering gas is 5, into spraying layer above the speed of reacting gas be 2m/s；The circulation of reacting gas neutralizer makes
With.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 150 DEG C；Reacting gas cleaning solution with it is anti-
The weight ratio for answering gas is 12.
The spray flux of described Multi-layer sprinkling layer is to gradually reduce from top to bottom, by weight the spray flux of a upper spraying layer
For the 0.9 of next spraying layer spray flux.
The clearance of ammonia after spray equipment shower nozzle spray in reacting gas reaches 99.85%.
Claims (15)
1. a kind of Multi-layer sprinkling device, including the outlet of housing, reaction gas inlet, reaction gas inlet, reacting gas neutralizer
Entrance, the outlet of reacting gas neutralizer, reaction gas inlet are arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on spray
The top of equipment is drenched, reacting gas neutralizer entrance is provided in above reaction gas inlet, and the outlet of reacting gas neutralizer is set
Put and demister be set above sprinkling equipment bottom, spraying layer,
Wherein, reacting gas neutralizer entrance sets the Multi-layer sprinkling layer being made up of shower nozzle by geometry arrangement, Multi-layer sprinkling
For the distance between layer from top to bottom to be stepped up, the distance between upper spraying layer is the distance between next spraying layer
1.05~1.5 times.
2. Multi-layer sprinkling device according to claim 1, it is characterised in that on described Multi-layer sprinkling layer a spraying layer it
Between distance be 1.05~1.4 times of the distance between next spraying layer, the spraying layer that reacting gas neutralizer entrance is set is 3
~8 layers；The arrangement density of every layer of shower nozzle is 1~4 shower nozzle/m2；The geometry of every layer of water-spraying fabric includes square, rectangular
At least one of shape, equilateral triangle, concentric circles annular；Described shower nozzle includes hollow cone, solid-cone, screw type, air mist
Change at least one of shower nozzle.
3. Multi-layer sprinkling device according to claim 1, it is characterised in that demister, foam removal are set above the spraying layer
Device includes at least one of board-like demister, wire mesh demister, bubble cap tray, sieve plate, filler, and 3~8 layers are set below demister
The spraying layer sprayed upwards.
4. Multi-layer sprinkling device according to claim 2, it is characterised in that on described Multi-layer sprinkling layer a spraying layer it
Between distance be 1.1~1.2 times of the distance between next spraying layer, the neutralizer spray that reacting gas neutralizer entrance is set
Layer is 3~4 layers；The arrangement density of every layer of shower nozzle is 1~2 shower nozzle/m2。
5. Multi-layer sprinkling device according to claim 2, it is characterised in that every layer of spraying layer sets supervisor, branch pipe, short tube,
Wherein the 0.2~0.5 of a diameter of predominant tube diameter of branch pipe；The 0.3~0.5 of a diameter of pipe diameter of short tube.
6. Multi-layer sprinkling device according to claim 1, it is characterised in that described reaction gas inlet sets gas point
Cloth device, gas distributor pattern include one kind in semicircle cast, pipe distributor, dendroid porous type, biserial vane type.
7. Multi-layer sprinkling device according to claim 1, it is characterised in that under reacting gas neutralizer entrance spraying layer
The column plate or filler of 1~10 piece of theoretical plate are set above side, reaction gas inlet；Described column plate includes float valve, sieve aperture, bubble
Cover, it is oriented at least one of sieve aperture；Described filler is included in grid, regular screen waviness packings, Raschig ring, Pall ring
It is at least one.
8. Multi-layer sprinkling device according to claim 5, it is characterised in that described reacting gas neutralizer entrance spray
The column plate or filler of 2~6 pieces of theoretical plates are set above layer lower section, reaction gas inlet.
9. Multi-layer sprinkling device according to claim 1, it is characterised in that the distance between described Multi-layer sprinkling layer
0.7-1.3 rice.
10. a kind of neutralization method, using any one Multi-layer sprinkling device in claim 1~9, neutralization method includes following several
Individual step：
A) be 50~200 DEG C by temperature, with the weight of reacting gas than the neutralizer for 0.3~20 from by shower nozzle by geometry
Sprayed in the neutralizer spraying layer of arrangement composition, with reacting gas counter current contacting；
B) reacting gas after neutralizing is entered above spraying layer with 0.2~5m/s speed, and subsequent absorption is entered after mist eliminator
System.
11. neutralization method according to claim 10, it is characterised in that the reacting gas contacted with reacting gas
The temperature of neutralizer is 50~150 DEG C；The weight of reacting gas neutralizer and reacting gas ratio is 4.5~18, into spraying layer
The speed of the reacting gas of top is 0.8~2m/s；Reacting gas neutralizer recycles.
12. neutralization method according to claim 10, it is characterised in that the reacting gas contacted with reacting gas
The temperature of neutralizer is 70~120 DEG C；The weight of reacting gas cleaning solution and reacting gas ratio is 5~16.
13. neutralization method according to claim 10, it is characterised in that the spray flux of described Multi-layer sprinkling layer from it is lower to
It is upper to gradually reduce, the spray flux of a upper spraying layer is 0.5~0.99 times of next spraying layer spray flux by weight.
14. neutralization method according to claim 10, it is characterised in that the spray flux of described Multi-layer sprinkling layer is with weight
The spray flux of the upper spraying layer of meter is the 0.7~0.99 of next spraying layer spray flux.
15. neutralization method according to claim 11, it is characterised in that the spray flux of described Multi-layer sprinkling layer is with weight
The spray flux of the upper spraying layer of meter is the 0.8~0.9 of next spraying layer spray flux.
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| CN201510052350.7A CN105983319B (en) | 2015-01-31 | 2015-01-31 | Multi-layer sprinkling device |
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| CN106767036A (en) * | 2016-11-30 | 2017-05-31 | 深圳市瑞升华科技股份有限公司 | A kind of heat exchanger |
| CN106595334A (en) * | 2016-12-08 | 2017-04-26 | 中山大学 | Water-saving fog-dissipation closed cooling tower with float valve structure |
| CN109662895A (en) * | 2017-10-16 | 2019-04-23 | 天津和治药业集团有限公司 | A kind of Chinese medicine softening method and device |
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