CN108815987A - Hydrogen peroxide oxidation exhaust treatment system and processing method - Google Patents
Hydrogen peroxide oxidation exhaust treatment system and processing method Download PDFInfo
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- CN108815987A CN108815987A CN201810800838.7A CN201810800838A CN108815987A CN 108815987 A CN108815987 A CN 108815987A CN 201810800838 A CN201810800838 A CN 201810800838A CN 108815987 A CN108815987 A CN 108815987A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/02—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
- B01D17/02—Separation of non-miscible liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/002—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/106—Silica or silicates
- B01D2253/108—Zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/116—Molecular sieves other than zeolites
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
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Abstract
The present invention relates to a kind of hydrogen peroxide oxidation exhaust treatment systems, including adsorption tower, condenser and oil water separator, the lower part of the adsorption tower is equipped with hydrogen peroxide oxidation gas inlet and discharge port, middle part is equipped with absorption heavy aromatics and can regenerated molecular sieve, top be equipped with steam entry and offgas outlet, the discharge port links together with the entrance of condenser, and the condenser is linked together by the entrance for exporting with the oil water separator.Heavy aromatics in tail gas can be individually collected in the hydrogen peroxide oxidation exhaust treatment system for carrying out concentrating condensing recovery afterwards together the present invention provides one kind, it is high to recycle energy consumption present in heavy aromatics to the whole condensation of entire tail gas progress for solving the problems, such as.
Description
Technical field
The present invention relates to Hydrogen Peroxide Production technical field more particularly to a kind of hydrogen peroxide oxidation exhaust treatment systems.
Background technique
The main component in hydrogen peroxide oxidation tail gas generated in Hydrogen Peroxide Production is heavy aromatics, existing Hydrogen Peroxide Production
Process has plenty of and will carry out direct emission after tail gas carbon fiber adsorption, and which is big to the pollution of environment.Besides right
This tail gas carries out cooling then recycling heavy aromatics
In the patent document of CN201610750528.X i.e. open disclose it is a kind of handled by way of condensing full hydrogen peroxide tail gas and return
The method for receiving heavy aromatics.Thermal content in the tail gas of discharge is high and the content of heavy aromatics is low (4000mg/m3), passes through what is condensed entirely
Mode recycles heavy aromatics, will the tail gas of all discharges all cooled down, there are the high deficiencies of energy consumption.
Summary of the invention
The heavy aromatics in tail gas can be individually collected in the present invention provides one kind and carry out concentrating afterwards together being condensed back to
The hydrogen peroxide oxidation exhaust treatment system of receipts, for solving to carry out entire tail gas whole condensation to recycle present in heavy aromatics
The high problem of energy consumption.
The above technical problem is solved through the following technical scheme：A kind of hydrogen peroxide oxidation exhaust treatment system, including
The lower part of adsorption tower, condenser and oil water separator, the adsorption tower is equipped with hydrogen peroxide oxidation gas inlet and discharge port, middle part
Equipped with absorption heavy aromatics and can regenerated molecular sieve, top be equipped with steam entry and offgas outlet, the discharge port is the same as cold
The entrance of condenser links together, and the condenser is linked together by the entrance for exporting with the oil water separator.It uses
When hydrogen peroxide oxidation tail gas enter adsorption tower and pass through molecular sieve, molecular sieve will be remaining after the heavy aromatics in hydrogen peroxide oxidation tail gas
Tail gas be discharged from offgas outlet so that heavy aromatics is adsorbed in molecular sieve, when molecular sieve can not continue to flowing through
(sentenced by monitoring the content for the heavy aromatics being discharged from offgas outlet when heavy aromatics in hydrogen peroxide oxidation tail gas is adsorbed
Whether disconnected molecular sieve can continue to absorption heavy aromatics, indicates to can continue to adsorb if content can be lower than setting value, be higher than
Then indicate effectively be continued to adsorb when setting value), then stop inputting in hydrogen peroxide oxidation tail gas to adsorption tower, from
Heavy aromatics in molecular sieve is desorbed out and be transported in condenser by vapor air inlet input vapor to be condensed, and is condensed into
Water-oil separating is carried out after liquid again, to recycle heavy aromatics.Can carry out circulation absorption and regeneration, multitower using multitower can adopt
The process design arranged with serial or parallel connection.
Preferably, the adsorption tower includes shell, equipped with partition and the inner cylinder being connected on partition, institute in the shell
The lower surface for stating partition is the circular conical surface to arch upward upwards, and the bottom of perforation inner cylinder is equipped at the highest point of the lower surface of the partition
Through-hole, vapor rising passway is formed between the inner cylinder and shell, the molecular sieve is arranged in the inner cylinder, the water
Vapour inlet and offgas outlet are arranged on the position of the shell being located above the inner cylinder, and the discharge port is arranged in institute
State on the position of the lower section positioned at partition of shell, the hydrogen peroxide oxidation gas inlet be arranged in the inner cylinder be located at molecule
On the position for sieving lower section, if the partition lower surface is equipped with arterial highway and is sequentially sleeved at together along what annular sidewall circumferentially extended
Annular heat exchanger fin, the annular heat exchanger fin are distributed along the vertical direction, and liquid-collecting groove, the ring are formed between adjacent annular heat exchanger fin
The lower surface of shape heat exchanger fin is the low inclined-plane in the high connecting pin in free end, is equipped with the liquid in liquid-collecting groove in the partition along inner casing
Side wall be discharged into drainage hole in shell and be connected to the air-flow through-hole of liquid-collecting groove and vapor rising passway, in the heat exchanger fin
Equipped with refrigerant passage.Be desorbed molecular sieve in heavy aromatics during, due to the bottleneck effect of discharge port will lead to it is other
Molecular sieve gathers far from the side of vapor import and causes pressure rising more, and lateral pressure rising is more, and vapor is caused to pass through
Be obstructed when over-molecular sieve, generate be obstructed after then make vapor through fully heavy aromatics can not be desorbed out when over-molecular sieve,
It has been to influence heavy aromatics desorption efficiency.In addition it is cold that the vapor entered in adsorption tower reaches condenser progress after over-molecular sieve
Solidifying, more so as to cause required quantity of steam when desorption heavy aromatics, quantity of steam is more, will lead to and generates when subsequent water-oil separating
Water is more, and the water that water-oil separating goes out is still the sewage for needing to carry out wastewater treatment, therefore it is big to will lead to wastewater discharge.And this skill
Art scheme controls the temperature of heat exchanger fin between 110 ° -130 ° in the region setting heat exchanger fin for generating bottleneck effect, use,
So that gaseous heavy aromatics generates condensation, and gaseous vapor flows back into the last time of molecular sieve and is again introduced into molecule
Sieve realizes recycling for vapor, while the water mist for flowing through heat exchanger fin also forms vapor by gasification and realizes following for vapor
Ring utilizes and avoids the part water mist from forming water and be discharged from discharge port, and the improper reduction bottleneck effect that plays of the process makes vapor
Fluency when flowing through molecular sieve is good, and the water that vapor and vapor are formed has part to carry out circulation, reduced water steaming
Amount that gas is discharged into condenser plays the role of reducing waste water content.Heat exchanger play simultaneously to heavy aromatics heat absorption condensation and
Effect to water mist evaporation realizes the heat exchange of water and heavy aromatics and realizes tri-state and change.Heat exchanger condensed go out
Heavy aromatics leaves from edge, can prevent from contacting with steam during decline and generating second gasification.
Preferably, the annular heat exchanger fin being located above stretches out the downward projection in part of underlying annular heat exchanger fin
The width for being formed by annulus is 1 centimetre or less.Enable to the liquid heavy aromatics generated on heat exchanger fin more fully through arranging
Fluid apertures discharge (connect collecting tank collection), if wide during there will be partially liq heavy aromatics during flowing to liquid-collecting groove
Way fall and, the heavy aromatics fallen then decline during with steam contact can generate second gasification.The following table of annular heat exchanger fin
The tilt angle in face is then best greater than 40 °.
Preferably, being equipped with the gas distribution coil pipe being located above molecular sieve in the inner cylinder, one end of the gas distribution coil pipe is same
The steam entry is docking together, and the gas distribution coil pipe is that circumferential surface is equipped with several outlet nozzles towards molecular sieve open.
Enable to steam entry input steam assured uniform directive molecular sieve and the upper end of vapor rising passway generate
The vapor rising of negative pressure and vapor rising passway of being born, has been the work of fluency when can also improve water steam
With.
Preferably, the adsorption tower includes shell, the upper end of the shell is equipped with rectangular pyramid section, the tetragonous shell of column
Upper end is equipped with roof, and the offgas outlet is arranged on the roof, and the inner surface of the roof, which is equipped with, blocks band installation pit,
Described block is equipped with annular in band installation pit and blocks band, and described block is equipped with two drivings and blocks the driving that band rotates in band
Axis, one in the drive shaft links together with driving motor, and the band that blocks includes base and is connected to the outer of base
Water absorption layer on circumferential surface, it is described block to be additionally provided in band installation pit press the water absorption layer with drive shaft described in unification root and make
The extruding axis that liquid in water absorption layer squeezes out, the upper surface of the tetragonous shell of column are equipped with the liquid for catching that water absorption layer squeezes out
Water receiving annular groove, described block cover all the opening for sheltering from the upper end of tetragonous shell of column with downward projection, and the annular hides
The outlet passageway of connection offgas outlet and quadrangular intersegmental part space is formed between flap and top cover.Through the gas stream of molecular sieve
Liquid can be generated on the roof of shell to during offgas outlet, which can fall on molecular sieve and influence molecular sieve
To the adsorption capacity of heavy aromatics, the technical program pass through blocks band constitute shell roof, it is other block take generation condense
When the liquid that generates adsorbed by liquid-adsorption layer, when block band rotation and through extruding axis when liquid be squeezed out and drop onto water receiving ring
Make reducing in liquid-adsorption layer containing liquid in slot, so that the phenomenon that liquid-adsorption layer will not generate water content too much and fall, from
And it can prevent liquid from falling on molecular sieve.
Preferably, being additionally provided with the suction opening towards the water absorption layer in the water receiving annular groove, the extruding axle position is in pumping
Side of the air port far from side wall center, the suction opening are docking together with the import of exhaust fan.It can prevent liquid from generating reflux
And it drops on molecular sieve.
The present invention also provides a kind of hydrogen peroxide oxidation exhaust gas treating methods, which is characterized in that the first step, by dioxygen water oxygen
It is discharged after over-molecular sieve adsorbs from offgas outlet after changing in tail gas input adsorption tower, when hydrogen peroxide oxidation tail gas is through over-molecular sieve
It is adsorbed in molecular sieve；When the heavy aromatics concentration in the gas being discharged in offgas outlet reaches setting value, stop input dioxygen
Water oxidized tail gas；Second step, by vapor from vapor input port input adsorption tower in and after over-molecular sieve reach discharge
Mouthful, vapor is through lower so that regenerating molecular sieve by the heavy aromatics being adsorbed in molecular sieve desorption when over-molecular sieve；Third step,
Heavy aromatics under being desorbed through the vapor of over-molecular sieve and out of molecular sieve enters oil water separator after condenser condenses to carry out
Separation, to recycle out heavy aromatics.
Preferably, the temperature for inputting the vapor of the steam entry is 100 DEG C -200 DEG C.
Preferably, in second step, vapor through over-molecular sieve and the heavy aromatics under being desorbed out of molecular sieve using
The heat exchanger fin that 110 DEG C -130 DEG C of temperature column, so that gaseous heavy aromatics is condensed into liquid heavy aromatics and the aqueous vapor of liquid turns to water
Steam, liquid heavy aromatics are discharged from discharge port, are formed by after water vapour flows back into above molecular sieve in company with new input vapor
Together through over-molecular sieve, to realize recycling for vapor.
Present invention tool has the advantage that：Vent gas treatment effect is good, and the content of heavy aromatics is enabled to be reduced to by 4000mg/m
Less than 10mg/m3；Heavy aromatics is concentrated and is condensed, low energy consumption.
Detailed description of the invention
Fig. 1 is the schematic diagram of hydrogen peroxide oxidation exhaust treatment system in the embodiment of the present invention one.
Fig. 2 is the schematic diagram of the adsorption tower in the embodiment of the present invention two.
Fig. 3 is the partial enlargement diagram at the A of Fig. 2.
Fig. 4 is the schematic diagram on the top of the adsorption tower in the embodiment of the present invention three.
In figure：It is adsorption tower 1, hydrogen peroxide oxidation gas inlet 11, discharge port 12, steam entry 13, offgas outlet 14, interior
Cylinder 15, vapor rising passway 16, gas distribution coil pipe 17, outlet nozzle 18, rectangular pyramid section 19, shell 10, condenser 2, water-oil separating
Device 3, molecular sieve 4, partition 5, through-hole 51, annular heat exchanger fin 52, liquid-collecting groove 53, drainage hole 54, air-flow through-hole 55, refrigerant passage
56, the annular heat exchanger fin being located above stretches out the projection of the part of underlying annular heat exchanger fin downwards and is formed by annulus
Width L, roof 6, block band installation pit 61, annular block band 62, drive shaft 63, base 621, water absorption layer 623, squeeze axis 64,
Water receiving annular groove 65, outlet passageway 66, suction opening 67, exhaust fan 68.
Specific embodiment
The present invention will be further described below with reference to the accompanying drawings and embodiments.
Embodiment one, referring to Fig. 1, a kind of hydrogen peroxide oxidation exhaust treatment system, including adsorption tower 1, condenser 2 and grease
Separator 3.Adsorption tower 1 has 3, and 3 adsorption towers are connected in parallel.
The lower part of adsorption tower 1 is equipped with hydrogen peroxide oxidation gas inlet 11 and discharge port 12, middle part is equipped with absorption heavy aromatics and
Can regenerated molecular sieve 4, top be equipped with steam entry 13 and offgas outlet 14.Discharge port is connected with the entrance of condenser 2
Together.The outlet of condenser links together with the entrance of oil water separator 3.Molecular sieve is specifically advisable prosperous Soviet Union in the present embodiment
The model of roc Science and Technology Ltd.：SA-A01 molecular sieve.
The present invention also provides a kind of hydrogen peroxide oxidation exhaust gas treating method, the first step, by hydrogen peroxide oxidation tail gas through double
Oxygen water oxygen gas inlet 11 is discharged after the absorption of over-molecular sieve 4 from offgas outlet 14 after inputting in adsorption tower, hydrogen peroxide oxidation
Tail gas when over-molecular sieve through being adsorbed in molecular sieve；Detect the content of the heavy aromatics from the tail gas that offgas outlet is discharged.Work as tail
When heavy aromatics concentration in gas outlet in the gas that is discharged reaches setting value 9mg/m3, close hydrogen peroxide oxidation gas inlet 11 and
Stop and input hydrogen peroxide oxidation tail gas, closes offgas outlet 14.Second step inputs vapor from vapor input port 13
Discharge port is reached in adsorption tower and after over-molecular sieve, the temperature of the vapor of input is between 100-200 DEG C.Vapor passes through
It is when molecular sieve that the heavy aromatics being adsorbed in molecular sieve desorption is lower so that regenerating molecular sieve；Third step, through over-molecular sieve
Vapor and heavy aromatics under being desorbed out of molecular sieve through discharge port 12 input after condenser 2 condenses enter oil water separator 3 into
Row separation, to recycle out heavy aromatics.
Embodiment two, the difference with embodiment one are：
Referring to figs. 2 and 3, adsorption tower includes shell 10.Equipped with partition 5 and the inner cylinder 15 being connected on partition in shell.
The through-hole 51 of the bottom of perforation inner cylinder is equipped at the highest point of the lower surface of partition.Vapor is formed between inner cylinder and shell to rise
Channel 16.Molecular sieve 4 is arranged in inner cylinder.Steam entry 13 and offgas outlet 14 be arranged in shell be located at inner cylinder above
On position.Discharge port 12 is arranged on the bottom of shell.Hydrogen peroxide oxidation gas inlet 11 be arranged in inner cylinder be located at molecular sieve
On the position of lower section.Hydrogen peroxide oxidation gas inlet 11 extends to outside shell 10.The lower surface of partition is the circle to arch upward upwards
The conical surface.If partition lower surface is equipped with the annular heat exchanger fin 52 being sequentially sleeved at together that arterial highway is circumferentially extended along annular sidewall.
Annular heat exchanger fin is distributed along the vertical direction.Liquid-collecting groove 53 is formed between adjacent annular heat exchanger fin.The lower surface of annular heat exchanger fin
For the low inclined-plane in the high connecting pin in free end.The side wall by the liquid in liquid-collecting groove along inner casing is equipped in partition to be discharged into shell
Drainage hole 54 and the air-flow through-hole 55 for being connected to liquid-collecting groove and vapor rising passway.Refrigerant passage 56 is equipped in heat exchanger fin.It is located at
The width L that the downward projection in part that the annular heat exchanger fin of top stretches out underlying annular heat exchanger fin is formed by annulus is
1 centimetre or less.The gas distribution coil pipe 17 being located above molecular sieve is equipped in inner cylinder.It is docked with steam entry one end of gas distribution coil pipe
Together, the other end closing of gas distribution coil pipe.Plane where gas distribution coil pipe is in horizontality.It is set on the circumferential surface of gas distribution coil pipe
There are several outlet nozzles 18 towards molecular sieve open.
In the present embodiment, flows through refrigerant such as hot water and be equipped with refrigerant passage 56 in heat exchanger fin.In second step, pass through refrigerant
The temperature of heat exchanger fin is controlled between 110 DEG C -130 DEG C.Vapor through over-molecular sieve and the weight under being desorbed out of molecular sieve
Aromatic hydrocarbons flows out to the lower zone of partition from through-hole, and part gas-liquid mixture is contacted with heat exchanger fin so that gaseous heavy aromatics condenses
Turn to vapor at the aqueous vapor of liquid heavy aromatics and liquid, liquid heavy aromatics from liquid-collecting groove 53 be discharged in shell after from discharge port
Discharge is formed by water vapour and steams after airflow channel and vapor rising passway flow back into above molecular sieve in company with new input water
Gas is together through over-molecular sieve, to realize recycling for vapor.The vapor of vapor input port input is penetrated through outlet nozzle
To molecular sieve 4.And
Embodiment three, the difference with embodiment two are：
Referring to Fig. 3, the upper end of shell 10 is equipped with rectangular pyramid section 19.The upper end of tetragonous shell of column is equipped with roof 6.Offgas outlet 14
It is arranged on roof.The inner surface of roof, which is equipped with, blocks band installation pit 61.It blocks in band installation pit and blocks band 62 equipped with annular.
Block band in be equipped with two driving block band rotate drive shaft 63.One in drive shaft is connected to one with driving motor
It rises.Block the water absorption layer 623 that band includes base 621 and is connected on the outer peripheral surface of base.Water absorption layer is sponge structure.Block band
The extruding axis 64 for unification root drive shaft pressing water absorption layer the liquid in water absorption layer being squeezed out is additionally provided in installation pit.It is tetragonous
The upper surface of shell of column is equipped with the water receiving annular groove 65 for catching the liquid that water absorption layer squeezes out.It blocks and is completely covered with downward projection
Firmly shelter from the opening of the upper end of tetragonous shell of column.Annular is blocked and is formed in connection offgas outlet and tetragonous shell of column between band and top cover
The outlet passageway 66 in portion space.The suction opening 67 towards water absorption layer is additionally provided in water receiving annular groove.It is separate in suction opening to squeeze axle position
The side at side wall center.Air port is docking together with the import of exhaust fan 68.
The liquid that gas is formed when blocking and taking and generate and condense in use process is adsorbed by water absorption layer, is blocking band installation
The liquid formed on the side wall of hole flows into water receiving annular groove.When blocking band rotation and pass through extruding axis, liquid is squeezed out and drops onto
Water receiving
In annular groove the liquid content in water absorption layer is reduced, falls too much so that water absorption layer will not generate liquid content
The phenomenon that falling.
Claims (9)
1. a kind of hydrogen peroxide oxidation exhaust treatment system, which is characterized in that including adsorption tower, condenser and oil water separator, institute
The lower part for stating adsorption tower is equipped with absorption heavy aromatics equipped with hydrogen peroxide oxidation gas inlet and discharge port, middle part and can be regenerated point
Son sieve, top are equipped with steam entry and offgas outlet, and the discharge port links together with the entrance of condenser, the condensation
The outlet of device links together with the entrance of the oil water separator.
2. hydrogen peroxide oxidation exhaust treatment system according to claim 1, which is characterized in that the adsorption tower includes outer
Shell, the shell is interior, and equipped with partition and the inner cylinder being connected on partition, the lower surface of the partition is the circular conical surface to arch upward upwards,
It is equipped with the through-hole of the bottom of perforation inner cylinder at the highest point of the lower surface of the partition, forms water between the inner cylinder and shell and steams
Gas rising passway, the molecular sieve are arranged in the inner cylinder, and the steam entry and offgas outlet are arranged in the shell
Be located at the inner cylinder above position on, the discharge port is arranged on the position of the lower section positioned at partition of the shell,
The hydrogen peroxide oxidation gas inlet is arranged on the position of the inner cylinder being located at below molecular sieve, on the partition lower surface
If the annular heat exchanger fin is vertically equipped with the annular heat exchanger fin being sequentially sleeved at together that arterial highway is circumferentially extended along annular sidewall
Directional spreding, forms liquid-collecting groove between adjacent annular heat exchanger fin, and the lower surface of the annular heat exchanger fin is that free end height connects
Low inclined-plane is held, the partition is interior equipped with the drainage hole and the company that are discharged into the liquid in liquid-collecting groove along the side wall of inner casing in shell
The air-flow through-hole of logical liquid-collecting groove and vapor rising passway, the heat exchanger fin is interior to be equipped with refrigerant passage.
3. hydrogen peroxide oxidation exhaust treatment system according to claim 2, which is characterized in that the annular heat exchange being located above
It is 1 centimetre or less that piece, which stretches out the projection of the part of underlying annular heat exchanger fin downwards to be formed by the width of annulus,.
4. hydrogen peroxide oxidation exhaust treatment system according to claim 2, which is characterized in that be equipped with and be located in the inner cylinder
One end of gas distribution coil pipe above molecular sieve, the gas distribution coil pipe is docking together with the steam entry, the air-spreading disk
The circumferential surface of pipe is equipped with several outlet nozzles towards molecular sieve open.
5. hydrogen peroxide oxidation exhaust treatment system according to claim 1, which is characterized in that the adsorption tower includes outer
Shell, the upper end of the shell are equipped with rectangular pyramid section, and the upper end of the tetragonous shell of column is equipped with roof, and the offgas outlet is arranged in institute
It states on roof, the inner surface of the roof, which is equipped with, blocks band installation pit, and described block in band installation pit blocks band equipped with annular,
Described block is equipped with the drive shaft that band rotation is blocked in two drivings in band, one in the drive shaft is the same as driving motor connection
Together, the water absorption layer for blocking band and including base and being connected on the outer peripheral surface of base, it is described to block in band installation pit also
It is described tetragonous equipped with the extruding axis for pressing the water absorption layer with drive shaft described in unification root and squeezing out the liquid in water absorption layer
The upper surface of shell of column is equipped with the water receiving annular groove for catching the liquid that water absorption layer squeezes out, and described block is covered completely with downward projection
Cover the opening for sheltering from the upper end of tetragonous shell of column, the annular blocks and forms connection offgas outlet and tetragonous between band and top cover
The outlet passageway of shell of column inner space.
6. hydrogen peroxide oxidation exhaust treatment system according to claim 5, which is characterized in that also set in the water receiving annular groove
There is the suction opening towards the water absorption layer, for the extruding axle position in side of the suction opening far from side wall center, the suction opening is same
The import of exhaust fan is docking together.
7. a kind of hydrogen peroxide oxidation exhaust gas treating method, which is characterized in that hydrogen peroxide oxidation tail gas is inputted adsorption tower by the first step
It is discharged after over-molecular sieve adsorbs from offgas outlet after interior, hydrogen peroxide oxidation tail gas when over-molecular sieve through being adsorbed in molecular sieve；
When the heavy aromatics concentration in the gas being discharged in offgas outlet reaches setting value, stop input hydrogen peroxide oxidation tail gas；Second
Vapor is reached discharge port from vapor input port in input adsorption tower and after over-molecular sieve by step, and vapor is through excessive
It is when son sieve that the heavy aromatics being adsorbed in molecular sieve desorption is lower so that regenerating molecular sieve；Third step, the water through over-molecular sieve
Steam and the heavy aromatics under being desorbed out of molecular sieve enter oil water separator after condenser condenses and are separated, to recycle out
Heavy aromatics.
8. hydrogen peroxide oxidation exhaust gas treating method according to claim 7, which is characterized in that input the steam entry
Vapor temperature be 100 DEG C -200 DEG C.
9. hydrogen peroxide oxidation exhaust gas treating method according to claim 7, which is characterized in that in second step, by molecule
The heat exchanger fin that the vapor of sieve and heavy aromatics under being desorbed out of molecular sieve are 110 DEG C -130 DEG C using temperature, so that gaseous state
Heavy aromatics be condensed into the aqueous vapor of liquid heavy aromatics and liquid and turn to vapor, liquid heavy aromatics is discharged from discharge port, is formed
Water vapour flow back into above molecular sieve after in company with new input vapor together through over-molecular sieve, to realize the circulation of vapor
It utilizes.
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| CN201810800838.7A CN108815987B (en) | 2018-07-24 | 2018-07-24 | Hydrogen peroxide oxidation tail gas treatment system and treatment method |
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| CN202700289U (en) * | 2012-01-19 | 2013-01-30 | 江苏理文化工有限公司 | Device for processing hydrogen peroxide oxidation tail gas |
| CN105060255A (en) * | 2015-08-14 | 2015-11-18 | 河北美邦工程科技股份有限公司 | Method for recycling and treating heavy aromatics in oxidized tail gas obtained after oxidation of hydrogenated liquid in technology for producing hydrogen peroxide with anthraquinones process |
| CN106139824A (en) * | 2015-03-24 | 2016-11-23 | 湖北三宁化工股份有限公司 | A kind of hydrogen peroxide oxidation tail gas recycling device |
| CN206762576U (en) * | 2017-06-06 | 2017-12-19 | 湖北三宁化工股份有限公司 | Hydrogen peroxide low-temperature oxidation tail gas aromatics seperation retracting device |
| CN208786092U (en) * | 2018-07-24 | 2019-04-26 | 冯日洪 | A kind of hydrogen peroxide oxidation exhaust treatment system |
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| US5705040A (en) * | 1995-02-15 | 1998-01-06 | Johnsson; Pekka | Process for preparing a substantially pure aqueous solution of hydrogen peroxide |
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| CN102008862A (en) * | 2010-09-20 | 2011-04-13 | 上海安赐机械设备有限公司 | Recovery unit and recovery method for aromatic hydrocarbon in tail gas in hydrogen peroxide production process |
| CN202700289U (en) * | 2012-01-19 | 2013-01-30 | 江苏理文化工有限公司 | Device for processing hydrogen peroxide oxidation tail gas |
| CN106139824A (en) * | 2015-03-24 | 2016-11-23 | 湖北三宁化工股份有限公司 | A kind of hydrogen peroxide oxidation tail gas recycling device |
| CN105060255A (en) * | 2015-08-14 | 2015-11-18 | 河北美邦工程科技股份有限公司 | Method for recycling and treating heavy aromatics in oxidized tail gas obtained after oxidation of hydrogenated liquid in technology for producing hydrogen peroxide with anthraquinones process |
| CN206762576U (en) * | 2017-06-06 | 2017-12-19 | 湖北三宁化工股份有限公司 | Hydrogen peroxide low-temperature oxidation tail gas aromatics seperation retracting device |
| CN208786092U (en) * | 2018-07-24 | 2019-04-26 | 冯日洪 | A kind of hydrogen peroxide oxidation exhaust treatment system |
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| CN108815987B (en) | 2023-06-02 |
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