CN105983322A - Spraying equipment for neutralization reaction - Google Patents
Spraying equipment for neutralization reaction Download PDFInfo
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- CN105983322A CN105983322A CN201510052377.6A CN201510052377A CN105983322A CN 105983322 A CN105983322 A CN 105983322A CN 201510052377 A CN201510052377 A CN 201510052377A CN 105983322 A CN105983322 A CN 105983322A
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Abstract
The invention relates to spraying equipment for a neutralization reaction. The spraying equipment is mainly used for solving the problem in the prior art that the efficiency of neutralization of unreacted ammonia in outlet reactant gas of an ammonia oxidation reactor is not high. According to the spraying equipment for the neutralization reaction, by adopting the technical scheme that the spraying equipment comprises a shell, a reactant gas inlet, a reactant gas outlet, a neutralizing solution inlet and a neutralizing solution outlet, the reactant gas inlet is formed in the lower part of the spraying equipment, the reactant gas outlet is formed in the top of the spraying equipment, the neutralizing solution inlet is formed above the reactant gas inlet, the neutralizing solution outlet is formed in the bottom of the spraying equipment, spraying layers which are formed by sprayers in a manner of being distributed in a geometric shape are arranged at the neutralizing solution inlet, distances among the spraying layers gradually increase from bottom to top, the distance among an upper spraying layer is 1 to 1.5 times that among next spraying layer, and a demister is arranged above the spraying layers, the problem is better solved, and thus the spraying equipment can be applied to an industrial unit for an ammonia oxidation reaction.
Description
Technical field
The present invention relates to a kind of sprinkling equipment for neutralizing reaction, be particularly well-suited to the neutralization of ammonia in ammoxidation reaction.
Background technology
In ammoxidation reaction device, containing unreacted ammonia in the reacting gas of fluidized-bed reactor outlet, it is necessary to as early as possible
Being removed, and remove thorough, otherwise ammonia entrance follow-up system will cause system pH value to increase, and cause loss of product to increase
Add, affect the response rate of product, also result in the polymer plugging of tower, heat exchanger, pipeline etc. simultaneously, just affecting device
Often run.In existing apparatus, the distance between Multi-layer sprinkling layer is typically by contour arrangement, not according to the ammonia in reacting gas
The situation of change that uphill process from top to bottom gradually decreases, carries out spraying layer arrangement, it is impossible to remove rapidly targetedly
Ammonia, therefore, neutralizes the cycle of operation for extension fixture of the unreacted ammonia in reacting gas quickly, up hill and dale, reduces device
Consumption, be of great practical significance and economic benefit.
Document US3885928 describes recovery and the refining system of a kind of alkene nitrile, and wherein on the one hand the purpose of emergency cooling process is
Reactor effluent is cooled to uniform temperature, be on the other hand in reactor effluent unreacted ammonia and reaction generate poly-
Compound and heavy impurity.Technical scheme employed in the document is to use water and sulphuric acid as chilling liquid, aqueous, sour, polymerization
The bottoms of thing and other impurity is discharged from chilling system.Liquid containing ammonium sulfate, heavy impurity, a small amount of lightweight in these bottoms
Organic substance and water.Owing to ammonia conversion ratio is uncontrolled, make in reacting gas containing unreacted ammonia, unreacted ammonia and propylene
Nitrile reacts, and reduces the refined recovery rate of acrylonitrile.Unreacted ammonia must be removed quickly, up hill and dale.
Summary of the invention
One of the technical problem to be solved is in ammoxidation reaction device present in prior art, there is chilling
The design of tower sprinkling equipment is unreasonable, and gas-to-liquid contact is insufficient, and the removal efficiency of ammonia is the highest, and ammonia enters follow-up tower, heat exchanger
And pipeline system, increasing organic polymerization losses, cause follow-up equipment, pipeline to block, device consumption increases, and runs week
The problem that phase shortens, it is provided that a kind of new sprinkling equipment neutralizing reaction.It is high that this equipment has ammonia removal efficiency, effectively reduces
Enter the ammonia of follow-up system, reduce organic polymerization losses, maintain the relatively low consumption level of device, the operation of extension fixture
The advantage in cycle.
The two of the technical problem to be solved be to present in prior art in ammoxidation reaction device, there is urgency
Cold tower spraying method is unreasonable, and gas-to-liquid contact is insufficient, and the removal efficiency of ammonia is the highest, ammonia enter follow-up tower, heat exchanger and
Pipeline system, increases organic polymerization losses, causes follow-up equipment, pipeline to block, and device consumption increases, cycle of operation
The problem shortened, it is provided that a kind of new spraying method neutralizing reaction.It is high that the method has ammonia removal efficiency, effectively reduce into
Enter the ammonia of follow-up system, reduce organic polymerization losses, maintain the relatively low consumption level of device, the operation week of extension fixture
The advantage of phase.
For solving one of above-mentioned technical problem, the technical solution used in the present invention is as follows: a kind of sprinkling equipment neutralizing reaction,
Exporting including housing, reaction gas inlet and reaction gas outlet, neutralizer entrance and neutralizer, reaction gas inlet is arranged
In the bottom of sprinkling equipment, reaction gas outlet is arranged on the top of sprinkling equipment, and neutralizer entrance is provided in reacting gas
Entrance top, neutralizer outlet is arranged on bottom sprinkling equipment, and wherein neutralizer entrance arranges and arranged by geometry by shower nozzle
The spraying layer of composition, every layer of described spraying layer arranges supervisor, arm, short tube, and arm is arranged on supervisor, and short tube sets
Put on arm, wherein 0.2-0.7 times of a diameter of predominant tube diameter of arm.
In technique scheme, preferred technical scheme is, the sprinkling equipment neutralizing reaction includes housing, reaction gas inlet
Exporting with reaction gas outlet, neutralizer entrance and neutralizer, reaction gas inlet is arranged on the bottom of sprinkling equipment, reaction
Gas outlet is arranged on the top of sprinkling equipment, and neutralizer entrance is provided in above reaction gas inlet, and neutralizer outlet sets
Putting bottom sprinkling equipment, wherein neutralizer entrance arranges and is arranged the spraying layer that forms by geometry by shower nozzle, spraying layer it
Between distance from top to bottom for being stepped up, the distance between a upper spraying layer is the 1-1.5 of the distance between next spraying layer
Times, spraying layer is provided above demister.
In technique scheme, preferred technical scheme is, the distance between a upper spraying layer be between next spraying layer away from
From 1.05-1.4 times, preferably scope is 1.1-1.2 times.
In technique scheme, preferred technical scheme is, the preferred scope of described reacting gas neutralizer spraying layer is 1～8
Layer, more preferably scope is 2～4 layers, and most preferred range is 1～2 layer；The preferred scope of the arrangement density of every layer of spraying layer shower nozzle
It is 1～4 shower nozzle/m2, more preferably scope is 1～2 shower nozzle/m2；The geometry of every layer of water-spraying fabric include square,
At least one in rectangle, equilateral triangle, concentric circular annular；Described shower nozzle include hollow cone, solid-cone, screw type,
At least one in air atomizing shower nozzle；Below reacting gas cleaning mixture entrance spraying layer, reaction gas inlet is provided above
The preferred scope of the number of theoretical plate of column plate or filler is 1～10 piece, and more preferably scope is 2～6 pieces；Described column plate includes floating
At least one in valve, sieve aperture, bubble-cap, guiding sieve aperture；Described filler includes grid, structured wire corrugated wire gauze packing, draws
At least one in western ring, Pall ring.
In technique scheme, preferred technical scheme is, the spray flux going up a spraying layer by weight is the spray of next spraying layer
0.5-1 times of pouring amount, preferably scope are 0.7-0.99 times, and more preferably scope is 0.8-0.9 times.
In technique scheme, preferred technical scheme is, is provided above demister at spraying layer, and demister includes board-like
At least one in demister, wire mesh demister, bubble cap tray, sieve plate, filler；Demister is the theory of bubble cap tray, sieve plate
The preferred scope of plate number is 1～5 piece, and more preferably scope is 1～2 piece；Demister is the preferred scope of the number of theoretical plate of filler
Being 1～5 piece, more preferably scope is 1～2 piece.
In technique scheme, preferred technical scheme is, arranges gas distributor at reaction gas inlet, and gas is distributed
Type formula includes the one in semicircle cast, pipe distributor, dendroid porous type, biserial vane type.
In technique scheme, preferred technical scheme is, reaction gas inlet is provided above liquid distribution trough, and liquid divides
Cloth device includes the one in tube and tank type, hole slot formula, trough-tray liquid distributor.
In technique scheme, preferred technical scheme is, the distance 0.7-1.3 rice between spraying layer, and every layer of spraying layer sets
Put supervisor, arm, short tube, the wherein 0.2-0.5 of a diameter of predominant tube diameter of arm,；The 0.3-0.5 of short tube a diameter of arm diameter,
The spraying layer that 1-2 layer upwards sprays is set below demister.
For solving the two of above-mentioned technical problem, the technical solution used in the present invention is as follows: a kind of spraying method neutralizing reaction,
Use any one sprinkling equipment above-mentioned, neutralize the spraying method method of reaction and include following several step:
A) by the neutralizer that weight ratio is 0.3～20 that temperature is 50～200 DEG C and reacting gas from by shower nozzle by geometry
The spraying layer of arrangement composition sprays, with reacting gas counter current contacting；
B) reacting gas after neutralizing enters above spraying layer with the speed of 0.2～5m/s, enters subsequent absorption system after mist eliminator
System.
In technique scheme, preferred 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 neutralizer and the preferred model of reacting gas weight ratio
Enclosing is 4.5～18, and more preferably scope is 5～16；The preferred scope entering the reacting gas speed above spraying layer is
0.8～2m/s.
In technique scheme, preferred technical scheme is, the spray flux going up a spraying layer by weight is the spray of next spraying layer
0.5-1 times of pouring amount, preferably scope are 0.7-0.99 times, and more preferably scope is 0.8-0.9 times.
Due to the sprinkling equipment neutralizing reaction of the present invention, sprinkling equipment includes housing, reaction gas inlet and outlet, neutralization
Liquid entrance and exit, wherein neutralizer entrance arranges the spraying layer being made up of shower nozzle by geometry arrangement, between spraying layer
Distance is from top to bottom for being stepped up, and reaction gas inlet is arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on spray
The top of pouring equipment, neutralizer entrance is provided in above reaction gas inlet, and neutralizer outlet is arranged on bottom sprinkling equipment,
Spraying layer is provided above demister, uses uniform temperature, with the reacting gas neutralizer that reacting gas is certain weight ratio from by
Shower nozzle sprays in the spraying layer by geometry arrangement composition, and reacting gas counter current contacting, and at the appropriate speed through overspray
Drenching above layer, gas-to-liquid contact is abundant, effectively removes the ammonia in reacting gas, decreases organic polymerization losses, dimension
Hold the consumption level that device is relatively low, extend the cycle of operation of device.And use shower nozzle to spray, make gas-to-liquid contact uniform,
Improve chilling tower cooler effect.
The present invention is applicable not only to the removal of ammoxidation reaction ammonia in gas, is equally applicable to fluidized-bed reactor outlet reaction gas
The catalyst fines carried secretly in body and the removal of heavy constituent, and it is applicable to the cooling of fluidized-bed reactor outlet reacting gas,
And use chemical reaction to remove the impurity in reacting gas.
Use the sprinkling equipment neutralizing reaction of the present invention, set in the sprinkling equipment neutralizing reaction of fluidized-bed reactor outlet
Putting 2 layers of reacting gas neutralizer spraying layer being made up of hollow cone shower nozzle by square arrangement, the arrangement density of shower nozzle is 2
Shower nozzle/m2, distance between a upper spraying layer is 1.2 times of the distance between next spraying layer, and spraying layer is provided above 2
The bubble cap tray of block theoretical plate is as demister, and reaction gas inlet arranges dendroid porous type distributor, through sprinkling equipment shower nozzle
After spray neutralization, in reacting gas, the clearance of ammonia reaches 99.9%, and sprinkling equipment and follow-up system are without blocking, organic polymer
Loss reduces, and extends the cycle of operation of device, achieves preferable technique effect.
Accompanying drawing explanation
Fig. 1 is the sprinkling equipment schematic diagram neutralizing reaction of the present invention；
In Fig. 1,1 is sprinkling equipment, and 2 is gas distributor, and 3 is reaction gas inlet, and 5 spray for reacting gas neutralizer
Layer, 6 is demister, and 7 is reaction gas outlet, and 8 is reacting gas neutralizer entrance, and 9 export for neutralizer.
The sprinkling equipment neutralizing reaction of the present invention and method technical process are as follows: fluidized-bed reaction product is from reaction gas inlet
3 enter sprinkling equipment 1 bottom, the reaction gas of ejection after gas distributor 2 and from reacting gas neutralizer spraying layer 5
Body neutralizer 8 carries out counter current contacting neutralization in column plate or packing layer 4, reacting gas after neutralization enter after demister 6 from
Reaction gas outlet 7 removes knockout tower, neutralizes waste liquid 9 and removes wastewater treatment equipment.
Below by specific embodiment, the invention will be further elaborated.
Detailed description of the invention
[comparative example 1]
Chilling tower reacting gas neutralizer sprays from Multi-layer sprinkling layer and reacts with reacting gas counter current contacting, and chilling tower exports
In gas phase, the neutralization of ammonia is incomplete, and the clearance of ammonia reaches 94%, and unneutralized ammonia enters in follow-up system, Organic substance
Polymerization losses increase, cause follow-up tower, heat exchanger, pipeline blocks, affect the properly functioning of device, shortening operation
Cycle.
[comparative example 2]
Chilling tower reacting gas neutralizer sprays from Multi-layer sprinkling layer and reacts, above spraying layer with reacting gas counter current contacting
It is not provided with demister；In chilling tower outlet gas phase, the neutralization of ammonia is incomplete, and the clearance of ammonia reaches 95%, unneutralized
Ammonia enters in follow-up system, and organic polymerization losses increases, and causes follow-up tower, heat exchanger, pipeline to block, shadow
Ring the properly functioning of device, shorten cycle of operation.
[embodiment 1]
Use the sprinkling equipment neutralizing reaction of the present invention, set in the sprinkling equipment neutralizing reaction of fluidized-bed reactor outlet
Putting 2 layers of reacting gas neutralizer spraying layer being made up of hollow cone shower nozzle by square arrangement, the arrangement density of shower nozzle is 2
Shower nozzle/m2, distance between a upper spraying layer is 1.2 times of the distance between next spraying layer, and spraying layer is provided above 2
The bubble cap tray of block theoretical plate is as demister, and reaction gas inlet arranges dendroid porous type distributor, through sprinkling equipment shower nozzle
After spray neutralization, in reacting gas, the clearance of ammonia reaches 99.9%, and sprinkling equipment and follow-up system are without blocking, organic polymer
Loss reduces, and extends the cycle of operation of device, achieves preferable technique effect.
[embodiment 2]
Neutralize device and include housing, reaction gas inlet and reaction gas outlet, reacting gas neutralizer entrance and reacting gas
Neutralizer exports, and reaction gas inlet is arranged in ammonia and device bottom, and reaction gas outlet is arranged in ammonia and device top,
Reacting gas neutralizer entrance is arranged on above reaction gas inlet, and neutralizer outlet is arranged in ammonia and bottom of device, wherein
In ammonia and device reaction gases neutralizer entrance below, reaction gas inlet be provided above column plate or filler, neutralizer enters
Mouth arranges liquid distribution trough.
Arranging supervisor, arm, short tube on every layer of spraying layer, arm is arranged on supervisor, and short tube is arranged on arm, wherein
0.7 times of a diameter of predominant tube diameter of arm.
Below described reacting gas neutralizer entrance, column plate that reaction gas inlet is provided above or the number of theoretical plate of filler
It it is 10 pieces；Described column plate is bubble cap tray；Described filler is grid；The liquid distribution trough arranged at neutralizer entrance is
Hole tank type liquid distributor；Below described reacting gas neutralizer entrance, the column plate that is provided above of reaction gas inlet or fill out
The number of theoretical plate of material is 6 pieces.
The clearance of the ammonia in neutralized rear reacting gas reaches 99.5%, in ammonia and device and follow-up system are without blocking, heat exchange
Device heat transfer effect, SR are constant, and organic polymerization losses reduces, and the plant running cycle reaches 18 months, extend
The cycle of operation of device, achieves preferable technique effect.
[embodiment 3]
Neutralize the sprinkling equipment of reaction, including housing, reaction gas inlet and reaction gas outlet, neutralizer entrance and neutralization
Liquid exports, and reaction gas inlet is arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on the top of sprinkling equipment, in
Being provided in above reaction gas inlet with liquid entrance, neutralizer outlet is arranged on bottom sprinkling equipment, wherein neutralizer entrance
The spraying layer being made up of by geometry arrangement shower nozzle is set, every layer of described spraying layer arranges supervisor, arm, short tube,
Arm is arranged on supervisor, and short tube is arranged on arm, wherein 0.5 times of a diameter of predominant tube diameter of arm.
Below described reacting gas neutralizer entrance, column plate that reaction gas inlet is provided above or the number of theoretical plate of filler
It it is 10 pieces；Described column plate is bubble cap tray；Described filler is grid；The liquid distribution trough arranged at neutralizer entrance is
Hole tank type liquid distributor；Below described reacting gas neutralizer entrance, the column plate that is provided above of reaction gas inlet or fill out
The number of theoretical plate of material is 6 pieces.
The described distance between spraying layer is from top to bottom for being stepped up, and the distance between a upper spraying layer is next spraying layer
Between 1.5 times of distance, go up a spraying layer by weight spray flux is next spraying layer spray flux 0.5 times.
The clearance of the ammonia in neutralized rear reacting gas reaches 99.6%, in ammonia and device and follow-up system are without blocking, heat exchange
Device heat transfer effect, SR are constant, and organic polymerization losses reduces, and the plant running cycle reaches 19 months, extend
The cycle of operation of device, achieves preferable technique effect.
[embodiment 4]
Neutralize the sprinkling equipment of reaction, including housing, reaction gas inlet and reaction gas outlet, neutralizer entrance and neutralization
Liquid exports, and reaction gas inlet is arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on the top of sprinkling equipment, in
Being provided in above reaction gas inlet with liquid entrance, neutralizer outlet is arranged on bottom sprinkling equipment, wherein neutralizer entrance
The spraying layer being made up of by geometry arrangement shower nozzle is set, every layer of described spraying layer arranges supervisor, arm, short tube,
Arm is arranged on supervisor, and short tube is arranged on arm, wherein 0.2 times of a diameter of predominant tube diameter of arm.
Below described reacting gas neutralizer entrance, column plate that reaction gas inlet is provided above or the number of theoretical plate of filler
It it is 10 pieces；Described column plate is bubble cap tray；Described filler is grid；The liquid distribution trough arranged at neutralizer entrance is
Hole tank type liquid distributor；Below described reacting gas neutralizer entrance, the column plate that is provided above of reaction gas inlet or fill out
The number of theoretical plate of material is 6 pieces.
The described distance between spraying layer is from top to bottom for being stepped up, and the distance between a upper spraying layer is next spraying layer
Between 1.5 times of distance, go up a spraying layer by weight spray flux is next spraying layer spray flux 0.5 times.
On described spraying layer, distance between a spraying layer is 1.4 times of the distance between next spraying layer, goes up by weight
The spray flux of one spraying layer is 0.7 times of next spraying layer spray flux.
The clearance of the ammonia in neutralized rear reacting gas reaches 99.6%, in ammonia and device and follow-up system are without blocking, heat exchange
Device heat transfer effect, SR are constant, and organic polymerization losses reduces, and the plant running cycle reaches 19 months, extend
The cycle of operation of device, achieves preferable technique effect.
[embodiment 5]
Neutralize the sprinkling equipment of reaction, including housing, reaction gas inlet and reaction gas outlet, neutralizer entrance and neutralization
Liquid exports, and reaction gas inlet is arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on the top of sprinkling equipment, in
Being provided in above reaction gas inlet with liquid entrance, neutralizer outlet is arranged on bottom sprinkling equipment, wherein neutralizer entrance
The spraying layer being made up of by geometry arrangement shower nozzle is set, every layer of described spraying layer arranges supervisor, arm, short tube,
Arm is arranged on supervisor, and short tube is arranged on arm, wherein 0.6 times of a diameter of predominant tube diameter of arm.
Below described reacting gas neutralizer entrance, column plate that reaction gas inlet is provided above or the number of theoretical plate of filler
It it is 10 pieces；Described column plate is bubble cap tray；Described filler is grid；The liquid distribution trough arranged at neutralizer entrance is
Hole tank type liquid distributor；Below described reacting gas neutralizer entrance, the column plate that is provided above of reaction gas inlet or fill out
The number of theoretical plate of material is 6 pieces.
The described distance between spraying layer is from top to bottom for being stepped up, and the distance between a upper spraying layer is next spraying layer
Between 1.5 times of distance, go up a spraying layer by weight spray flux is next spraying layer spray flux 0.5 times.
On described spraying layer, distance between a spraying layer is 1.4 times of the distance between next spraying layer, goes up by weight
The spray flux of one spraying layer is 0.7 times of next spraying layer spray flux.
The clearance of the ammonia in neutralized rear reacting gas reaches 99.8%, in ammonia and device and follow-up system are without blocking, heat exchange
Device heat transfer effect, SR are constant, and organic polymerization losses reduces, and the plant running cycle reaches 20 months, extend
The cycle of operation of device, achieves preferable technique effect.
[embodiment 6]
Ammonia includes housing, reaction gas inlet and reaction gas outlet, reacting gas neutralizer entrance and reaction with device
Gas neutralizer exports, and reaction gas inlet is arranged in ammonia and device bottom, and reaction gas outlet is arranged in ammonia and device
Top, reacting gas neutralizer entrance is arranged on above reaction gas inlet, and neutralizer outlet is arranged in ammonia and bottom of device,
Wherein in ammonia and device reaction gases neutralizer entrance below, reaction gas inlet be provided above column plate or filler, neutralize
Liquid entrance arranges liquid distribution trough.
Described spraying layer is provided above demister, and demister is board-like demister.
Below described reacting gas neutralizer entrance, column plate that reaction gas inlet is provided above or the number of theoretical plate of filler
It it is 10 pieces；Described column plate is bubble cap tray；Described filler is grid；The liquid distribution trough arranged at neutralizer entrance is
Hole tank type liquid distributor；Below described reacting gas neutralizer entrance, the column plate that is provided above of reaction gas inlet or fill out
The number of theoretical plate of material is 6 pieces.
The described distance between spraying layer is from top to bottom for being stepped up, and the distance between a upper spraying layer is next spraying layer
Between 1.5 times of distance, go up a spraying layer by weight spray flux is next spraying layer spray flux 0.5 times.
On described spraying layer, distance between a spraying layer is 1.4 times of the distance between next spraying layer, goes up by weight
The spray flux of one spraying layer is 0.7 times of next spraying layer spray flux.
Every layer of described spraying layer arranges supervisor, arm, short tube, wherein 0.7 times of a diameter of predominant tube diameter of arm；Short tube
0.7 times of a diameter of arm diameter.
Below reacting gas neutralizer entrance, the number of theoretical plate of column plate that reaction gas inlet is provided above or filler be 2 pieces.
Arranging demister at reacting gas neutralizer entrance top, demister is board-like demister.Reaction gas inlet is arranged
Gas distributor, gas distributor pattern is semicircle cast.
The clearance of the ammonia in neutralized rear reacting gas reaches 99.8%, in ammonia and device and follow-up system are without blocking, heat exchange
Device heat transfer effect, SR are constant, and organic polymerization losses reduces, and the plant running cycle reaches 20 months, extend
The cycle of operation of device, achieves preferable technique effect.
[embodiment 7]
Ammonia includes housing, reaction gas inlet and reaction gas outlet, reacting gas neutralizer entrance and reaction with device
Gas neutralizer exports, and reaction gas inlet is arranged in ammonia and device bottom, and reaction gas outlet is arranged in ammonia and device
Top, reacting gas neutralizer entrance is arranged on above reaction gas inlet, and neutralizer outlet is arranged in ammonia and bottom of device,
Wherein in ammonia and device reaction gases neutralizer entrance below, reaction gas inlet be provided above column plate or filler, neutralize
Liquid entrance arranges liquid distribution trough.
Described spraying layer is provided above demister, and demister is wire mesh demister.
Below described reacting gas neutralizer entrance, column plate that reaction gas inlet is provided above or the number of theoretical plate of filler
It it is 10 pieces；Described column plate is bubble cap tray；Described filler is grid；The liquid distribution trough arranged at neutralizer entrance is
Hole tank type liquid distributor；Below described reacting gas neutralizer entrance, the column plate that is provided above of reaction gas inlet or fill out
The number of theoretical plate of material is 6 pieces.
The described distance between spraying layer is from top to bottom for being stepped up, and the distance between a upper spraying layer is next spraying layer
Between 1.5 times of distance, go up a spraying layer by weight spray flux is next spraying layer spray flux 0.5 times.
In ammonia and in device: by the reacting gas neutralizer warp that weight ratio is 0.3 that temperature is 200 DEG C and reacting gas
With reacting gas counter current contacting after liquid distribution trough；Reacting gas after neutralization enters on liquid distribution trough with the speed of 5m/s
Absorption tower is gone to behind side；Neutralizer after neutralization is from ammonia and bottom of device removes wastewater treatment equipment.
The acid that neutralizer adds is sulphuric acid；Neutralizer pH controlling value is 6.5.The removal of the ammonia in neutralized rear reacting gas
Rate reaches 99.7%, and in ammonia and device and follow-up system are without blocking, heat exchanger heat transfer effect, SR are constant, Organic substance
Polymerization losses reduce, the plant running cycle reaches 18 months, extends the cycle of operation of device, achieve preferable skill
Art effect.
[embodiment 8]
Neutralize the sprinkling equipment of reaction, including housing, reaction gas inlet and reaction gas outlet, neutralizer entrance and neutralization
Liquid exports, and reaction gas inlet is arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on the top of sprinkling equipment, in
Being provided in above reaction gas inlet with liquid entrance, neutralizer outlet is arranged on bottom sprinkling equipment, wherein neutralizer entrance
The spraying layer being made up of by geometry arrangement shower nozzle is set, every layer of described spraying layer arranges supervisor, arm, short tube,
Arm is arranged on supervisor, and short tube is arranged on arm, wherein 0.5 times of a diameter of predominant tube diameter of arm.Described spray
Distance between Ceng is from top to bottom for being stepped up, and the distance between a upper spraying layer is the distance between next spraying layer
1.5 again.Described spraying layer is provided above demister.
Neutralizing the spraying method of reaction, use above-mentioned sprinkling equipment, being 50 DEG C by temperature with the weight ratio of reacting gas is
The neutralizer of 10 sprays, with reacting gas counter current contacting from the spraying layer being made up of by geometry arrangement shower nozzle；
Reacting gas after neutralization enters above spraying layer with the speed of 2m/s, enters subsequent absorption system after mist eliminator.
The temperature of the described reacting gas neutralizer contacted with reacting gas is 150 DEG C；Reacting gas cleaning mixture and reaction gas
The weight ratio of body is 10.
Go up a spraying layer by weight spray flux is next spraying layer spray flux 0.5 times.
The acid that neutralizer adds is sulphuric acid；Neutralizer pH controlling value is 6.0.The removal of the ammonia in neutralized rear reacting gas
Rate reaches 99.8%, and in ammonia and device and follow-up system are without blocking, heat exchanger heat transfer effect, SR are constant, Organic substance
Polymerization losses reduce, the plant running cycle reaches 20 months, extends the cycle of operation of device, achieve preferable skill
Art effect.
Claims (21)
1. neutralize a sprinkling equipment for reaction, enter including housing, reaction gas inlet and reaction gas outlet, neutralizer
Mouth and neutralizer export, and reaction gas inlet is arranged on the bottom of sprinkling equipment, and reaction gas outlet is arranged on sprinkling equipment
Top, neutralizer entrance is provided in above reaction gas inlet, and neutralizer outlet is arranged on bottom sprinkling equipment, Qi Zhongzhong
Arrange with liquid entrance and arranged the spraying layer that forms by geometry by shower nozzle, every layer of described spraying layer is arranged supervisor, arm,
Short tube, arm is arranged on supervisor, and short tube is arranged on arm, wherein 0.2-0.7 times of a diameter of predominant tube diameter of arm.
The most according to claim 1 neutralize reaction sprinkling equipment, it is characterised in that between described spraying layer away from
From from top to bottom for being stepped up, the distance between a upper spraying layer is 1-1.5 times of the distance between next spraying layer.
The sprinkling equipment neutralizing reaction the most according to claim 1, it is characterised in that described spraying layer is provided above
Demister.
The sprinkling equipment neutralizing reaction the most according to claim 1, it is characterised in that between a described upper spraying layer
Distance be 1.05-1.4 times of the distance between next spraying layer, the spraying layer that neutralizer entrance is arranged is 1～8 layer；Every layer
The arrangement density of shower nozzle is 1～4 shower nozzle/m2；The geometry of every layer of water-spraying fabric include square, rectangle, positive three
At least one in dihedral, concentric circular annular.
The most according to claim 1 neutralize reaction sprinkling equipment, it is characterised in that described shower nozzle include hollow cone,
At least one in solid-cone, screw type, air atomizing shower nozzle；The demister that spraying layer is provided above include board-like demister,
At least one in wire mesh demister, bubble cap tray, sieve plate, filler.
The sprinkling equipment neutralizing reaction the most according to claim 2 a, it is characterised in that spray on described spraying layer
Distance between Ceng is 1.1-1.2 times of the distance between next spraying layer, and the neutralizer spraying layer that neutralizer entrance is arranged is
2～4 layers；The arrangement density of every layer of shower nozzle is 1～2 shower nozzle/m2。
The sprinkling equipment neutralizing reaction the most according to claim 3, it is characterised in that described neutralizer entrance is arranged
Neutralizer spraying layer be 1～2 layer.
The sprinkling equipment neutralizing reaction the most according to claim 1, it is characterised in that described goes up a spray by weight
Drench the 0.5-1 that spray flux is next spraying layer spray flux of layer.
The sprinkling equipment neutralizing reaction the most according to claim 5, it is characterised in that described goes up a spray by weight
Drench the 0.7-0.99 that spray flux is next spraying layer spray flux of layer.
The sprinkling equipment neutralizing reaction the most according to claim 6, it is characterised in that described goes up one by weight
The spray flux of spraying layer is the 0.8-0.9 of next spraying layer spray flux.
11. sprinkling equipments neutralizing reaction according to claim 1, it is characterised in that every layer of described spraying layer sets
Put supervisor, arm, short tube, wherein 0.2-0.7 times of a diameter of predominant tube diameter of arm；The 0.2-0.7 of short tube a diameter of arm diameter
Times.
12. sprinkling equipments neutralizing reaction according to claim 8, it is characterised in that a diameter of master of described arm
0.2-0.5 times of pipe diameter；0.3-0.5 times of short tube a diameter of arm diameter.
13. sprinkling equipments neutralizing reaction according to claim 9, it is characterised in that a diameter of master of described arm
0.3-0.4 times of pipe diameter；0.3-0.4 times of short tube a diameter of arm diameter.
14. sprinkling equipments neutralizing reaction according to claim 1, it is characterised in that described reaction gas inlet
Arranging gas distributor, gas distributor pattern includes semicircle cast, pipe distributor, dendroid porous type, biserial blade
One in formula.
15. 1 kinds, for neutralizing the spraying method of reaction, use any one sprinkling equipment in claim 1～10, spray
Method includes following several step:
A) by the neutralizer that weight ratio is 0.3～20 that temperature is 50～200 DEG C and reacting gas from by shower nozzle by geometry
The spraying layer of arrangement composition sprays, with reacting gas counter current contacting；
B) reacting gas after neutralizing enters above spraying layer with the speed of 0.2～5m/s, enters subsequent absorption system after mist eliminator
System.
16. spraying methods neutralizing reaction according to claim 15, it is characterised in that described connects with reacting gas
The temperature of the reacting gas neutralizer touched is 50～150 DEG C；Reacting gas cleaning mixture is 4.5～18 with the weight ratio of reacting gas.
17. spraying methods neutralizing reaction according to claim 16, it is characterised in that described connects with reacting gas
The temperature of the reacting gas neutralizer touched is 70～120 DEG C；Reacting gas neutralizer is 5～16 with the weight ratio of reacting gas.
18. spraying methods neutralizing reaction according to claim 17, it is characterised in that on described entrance spraying layer
The speed of the reacting gas of side is 0.8～2m/s；Neutralizer recycles.
19. spraying methods neutralizing reaction according to claim 16, it is characterised in that described goes up one by weight
The spray flux of spraying layer is 0.5-1 times of next spraying layer spray flux.
20. spraying methods neutralizing reaction according to claim 16, it is characterised in that described goes up one by weight
The spray flux of spraying layer is 0.7-0.99 times of next spraying layer spray flux.
21. spraying methods neutralizing reaction according to claim 17, it is characterised in that described goes up one by weight
The spray flux of spraying layer is 0.8-0.9 times of next spraying layer spray flux.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510052377.6A CN105983322B (en) | 2015-01-31 | 2015-01-31 | The sprinkling equipment of neutralization reaction |
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| CN201510052377.6A CN105983322B (en) | 2015-01-31 | 2015-01-31 | The sprinkling equipment of neutralization reaction |
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| CN105983322B CN105983322B (en) | 2018-04-06 |
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| CN111320307A (en) * | 2020-03-20 | 2020-06-23 | 新昌县梅维斯环保有限公司 | Chemical production wastewater purification and discharge device in convection type and atomization neutralization |
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| CN105983322B (en) | 2018-04-06 |
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