CN106730973A - A kind of retracting device containing naphthalene waste gas - Google Patents
A kind of retracting device containing naphthalene waste gas Download PDFInfo
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- CN106730973A CN106730973A CN201710019035.3A CN201710019035A CN106730973A CN 106730973 A CN106730973 A CN 106730973A CN 201710019035 A CN201710019035 A CN 201710019035A CN 106730973 A CN106730973 A CN 106730973A
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- Prior art keywords
- waste gas
- retracting device
- chamber
- wind deflector
- brine recycling
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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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2253/00—Adsorbents used in seperation treatment of gases and vapours
- B01D2253/10—Inorganic adsorbents
- B01D2253/102—Carbon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/70—Organic compounds not provided for in groups B01D2257/00 - B01D2257/602
- B01D2257/708—Volatile organic compounds V.O.C.'s
Abstract
The present invention relates to a kind of retracting device containing naphthalene waste gas, including shell, the crystallisation chamber positioned at the brine recycling chamber of outer casing bottom and positioned at brine recycling chamber top and at least one material collection groove closed；Enclosed baffle is set between brine recycling chamber and crystallisation chamber；Deflector is set between crystallisation chamber and material collection groove；Porous separator is set between brine recycling chamber and material collection groove, and material collection trench bottom is stainless steel filtering net, and it is covered with water penetration filter membrane；Brine recycling chamber connection frequency conversion freezing unit；Crystallisation chamber top is connected by frequency conversion Cycle Unit at least provided with a spray equipment, spray equipment with brine recycling chamber；Shell is provided with exhaust gas inlet pipe and waste gas outlet pipe, and exhaust gas inlet pipe is extend into crystallisation chamber, and waste gas outlet pipe is connected with frequency conversion vacuum plant.The retracting device drastically increases naphthalene organic efficiency, reduces energy consumption.
Description
Technical field
The invention belongs to chemical production equipment field, and in particular to a kind of retracting device containing naphthalene waste gas.
Background technology
Naphthalene water reducer production technology be typically by crude naphthalene through the sulfonation of concentrated sulfuric acid high temperature, hydrolysis after with formaldehyde condensation, then
In alkali and to form.Wherein, crude naphthalene occupies larger raw material proportion as main raw material, must be by before sulfonating reaction is carried out
Crude naphthalene carries out being heated to 85~90 DEG C being melted, and to ensure that it fully dissolves, the general procedure time is 2 hours, and period deposits
Escaped in substantial amounts of melting waste gas volatilization, wherein main composition is naphthalene, and the naphthalene evaporated relative to other operations
Steam, amount containing naphthalene is high in melting naphthalene waste gas, and exhaust gas concentration is big, and the melting waste gas naphthalene purity for volatilizing is high, there is great recovery value,
But because naphthalene physicochemical property, and molten naphthalene waste gas high concentration the problems such as, recovery difficult is larger.
Existing traditional system of the treatment containing naphthalene tail gas only processes tail gas using spray process, then by the solid in spray liquid
Naphthalene is leached, and this processing mode only reclaims solid naphthalene in filtration stage, when work naphthalene volatile quantity is big simultaneously for many reactors, is needed
Want the work of naphthalene reclaimer operation staff intensive.
Chinese invention patent (A of CN 104478651) discloses a kind of crude naphthalene recovery and processing system, including be sequentially connected
Throw naphthalene mouth, air-introduced machine, spray column and tank；Air inlet is provided with the left of spray column, air inlet is connected with air inlet pipe, sprayed
Air outlet is provided with the right side of tower, at least two drainings curtain spray equipment, and spray column are provided between air inlet and the air outlet
Lower section is provided with discharge outlet；Wherein, the temperature reduction of the gaseous state naphthalene that spray column introduces air-introduced machine becomes solid and is deposited in water curtain spray
In the liquid that shower device sprays, and discharged by discharge outlet；Tank is connected by water inlet pipe with the water curtain sprinkling device, is used
In to water curtain sprinkling device offer water source；Tank is connected by drainpipe with discharge outlet, for receiving the discharge outlet discharge
Liquid；The liquid that filter is used to clean in the tank is provided with tank.The device processes tail by spray process
Gas, is then collected in tank by filter.But containing naphthalene in a large amount of melting waste gas that crude naphthalene is produced in melting
Amount is high, and effective recovery is unable to reach only by spray.
The content of the invention
The purpose of the present invention is to solve the shortcomings of the prior art, there is provided a kind of retracting device containing naphthalene waste gas, greatly
Naphthalene organic efficiency is improve, energy consumption is reduced.
The present invention solves the technical scheme that is provided of above-mentioned technical problem：
A kind of retracting device containing naphthalene waste gas, including closing shell, positioned at the brine recycling chamber of outer casing bottom and position
In the crystallisation chamber and at least one material collection groove on brine recycling chamber top；
Enclosed baffle is set between the brine recycling chamber and crystallisation chamber；Set between the crystallisation chamber and material collection groove
Deflector；Porous separator is set between the brine recycling chamber and material collection groove, and material collection trench bottom is stainless steel
Filter screen, and it is covered with water penetration filter membrane；
The brine recycling chamber connection frequency conversion freezing unit；The crystallisation chamber top is at least provided with a spray equipment, institute
Spray equipment is stated to be connected with brine recycling chamber by frequency conversion Cycle Unit；The shell is provided with exhaust gas inlet pipe and waste gas outlet
Pipe, the exhaust gas inlet pipe is extend into crystallisation chamber, and the waste gas outlet pipe is connected with frequency conversion vacuum plant.
In above-mentioned technical proposal, salt solution is all added in the brine recycling chamber and crystallisation chamber, by frequency conversion Cycle Unit and
Spray equipment realizes the circulation of liquid, and frequency conversion Cycle Unit sends into the salt solution in brine recycling chamber by pipeline from spray equipment
Crystallisation chamber top, causes crystallisation chamber liquid level to rise, and the deflector from crystallisation chamber side enters into material collection groove afterwards, finally returns
Flow to brine recycling chamber.
The shell of the retracting device is a structure for closing, is extracted from waste gas outlet pipe by frequency conversion vacuum plant useless
Gas so that negative pressure is formed in retracting device, waste gas containing naphthalene is entered into retracting device from exhaust gas inlet pipe, gone out from waste gas again afterwards
Mouth pipe goes out to enter emission-control equipment.
Because exhaust gas inlet pipe is extend into crystallisation chamber, under the liquid level of salt solution, in the presence of frequency conversion vacuum plant,
Waste gas containing naphthalene can be inhaled into the salt solution in crystallisation chamber, and forms air flotation effect.Now, frequency conversion freezes unit by controlling salt
The temperature of water so that the temperature in retracting device is maintained<20 DEG C, the saline contacts in naphthalene steam and crystallisation chamber in waste gas
Afterwards, most of naphthalene steam can be crystallized rapidly, formed small flat crystal and floated.
The spray equipment on crystallisation chamber top constantly sprays salt solution, by the waste gas containing naphthalene after salt solution primary crystallization again with spray
The saline contacts of pouring, secondary crystallization treatment；Spray equipment constantly sprays salt solution and also results in the rising of crystallisation chamber liquid level simultaneously so that
The flat crystal of floating is entered into material collection groove with deflector, because material collection trench bottom is water penetration filter membrane, is made
Obtain separation of solid and liquid；Salt solution is eventually back in brine recycling chamber by water penetration filter membrane and porous separator.
Preferably, the salt solution is from the calcium chloride solution that mass fraction is 10~20%, more preferably 15%.
Preferably, the spray equipment is vertical drencher, by with holes the spilling of water impact pendent sprinkler bottom
Head forms circular arc water curtain, effectively improves to the flush efficiency containing naphthalene waste gas, and can effectively prevent shower nozzle from blocking.
Preferably, setting rectangle manhole on the shell of the retracting device, staff is facilitated to enter in retracting device
Cleared up, in order to periodically being cleared up or being overhauled.
Preferably, the brine recycling chamber and crystallisation chamber are respectively provided with evacuated tube.
Preferably, the water penetration filter membrane is this filter membrane of 200 mesh fluorine U.S., strainability is high and water permeability is strong, can be effective
Organic efficiency is improved, and is conveniently replaceable or is cleaned.
The porous separator is provided with the second wind deflector, and the deflector, the second wind deflector and porous separator are formed
The structure of upward opening, the first material collecting tank is arranged between deflector and the second wind deflector；The shell is provided with
One wind deflector so that form air flue between first wind deflector and deflector and the second wind deflector；First wind deflector with
The first activated adoption packing layer is provided between second wind deflector, the first activated adoption packing layer top is at least correspondingly arranged a spray
Shower device.
Second wind deflector is set and deflector forms the structure of upward opening, for installing first material collecting tank, top
First wind deflector is set, shell is installed on so that shape between deflector and the first wind deflector, the first wind deflector and the second wind deflector
It is used for the circulation containing naphthalene waste gas into air flue；First activated adoption packing layer is arranged between the first wind deflector and the second wind deflector,
So that by the waste gas containing naphthalene of crystallization treatment twice by air flue when, the naphthalene steam in waste gas can be inhaled by activated adoption packing layer
Spray equipment that is attached, being set by the first activated adoption packing layer top, carries out third time crystallization treatment, and shower is to the first thing
Material collecting tank, carries out separation of solid and liquid, reaches three subcrystalline effects.
Preferably, the first activated adoption packing layer includes activated carbon stratum reticulare and activated carbon corrugated plating；The activity
Charcoal stratum reticulare is 50 mesh activated carbon stratum reticulares, and active carbon net lamellar spacing is formed with activated carbon corrugated plating side arrangement support (cellular)
Flow-guiding structure is distributed, to prevent packing layer from blocking and be easy to the brilliant material collecting tank that flows into of naphthalene to be reclaimed.
The shell is additionally provided with the 3rd wind deflector, and the second activated adoption packing layer is arranged on the second wind deflector and the 3rd wind-guiding
Between plate, the second activated adoption packing layer top is at least correspondingly arranged a spray equipment；The second material collecting tank is located at
Second activated adoption packing layer bottom, and opening is provided between the 3rd wind deflector as air flue.
Because the second activated adoption packing layer is arranged between the second wind deflector and the 3rd wind deflector, at three crystallizations
The waste gas containing naphthalene of reason may proceed to by the second activated adoption packing layer so that the naphthalene steam in waste gas can be by activated adoption packing layer
Absorption, continuing through the spray equipment of top setting carries out the 4th crystallization, and shower is to the second material collecting tank, carries out solid-liquid point
From reaching four subcrystalline effects；Air flue of the waste gas containing naphthalene eventually between second material collecting tank and the 3rd wind deflector goes out
Go, into waste gas outlet pipe.
The exhaust gas inlet pipe connects jet chimney.Heating dredging is carried out in line clogging, or is carried out clearly to equipment
System is heated when reason or maintenance, promotes salt brilliant and the brilliant dissolving of naphthalene；Preferably, valve can be set on jet chimney
Door.
The crystallisation chamber bottom is provided with deposition material collecting tank, and the deposition material collecting tank bottom is stainless steel filtering net.
Preferably, stainless steel filtering net is 60 mesh, the naphthalene crystal of deposition is directly cleared up when being easy to water body to change or repair.
The material collection groove is draw and insert-type material collection groove.After collecting tank material reaches certain amount, can directly dismantle
Cleaning, pack can complete to reclaim.
The retracting device is provided with long-range central control system and distance-transmission pressure gauge and electronics breather valve；The distance-transmission pressure gauge
Pressure in detection retracting device, and control frequency conversion vacuum plant and electronics to breathe pressure regulating valve by long-range central control system.
Far transmission level meter and liquid level electronic regulating valve are installed in the brine recycling chamber；The far transmission level meter detects salt
Liquid level in water circulation chamber, and control liquid level electronic to adjust valve regulation liquid level by long-range central control system.
The retracting device is provided with teletransmission thermometer；Temperature in the teletransmission thermometer detection retracting device, and lead to
Cross long-range central control system control frequency conversion freezing unit regulation temperature.Due to the special physico-chemical property of solid naphthalene, naphthalene EGT is melted
It is general taller and bigger in 80 DEG C, after conventional recycling processes are with the thermal contact conductance of mechanical cycles heating and high temperature naphthalene steam, system temperature
Degree rises very fast, water temperature rising in system therewith, influences recovering effect to cause a large amount of water vapors to be lost in simultaneously；And in the present invention
Under the cooperation of teletransmission thermometer, frequency conversion freezing unit and long-range central control system, temperature in control recovery system<20 DEG C, containing naphthalene
Crystallized rapidly after waste gas and saline contacts, and promote to flow by air flotation effect, prevented from depositing, block.
Compared with the existing technology, beneficial effects of the present invention are embodied in：
(1) use low temperature chlorination calcium solution as rinsing agent in retracting device of the invention, its refrigeration is more excellent than water
It is good, and its viscosity is larger, it is stronger to the adsorption effect of waste gas containing naphthalene and immiscible with naphthalene crystalline substance, it is that can be separated through conventional filtration, collect
It is in hgher efficiency；
(2) retracting device of the invention is suitably set by structure, can realize four crystallization treatments, is greatly enhanced
Naphthalene organic efficiency；
(3) exhaust gas inlet pipe is extend into crystallisation chamber in retracting device of the invention, unit allocation is freezed by frequency conversion
The temperature of retracting device is<20 DEG C so that after waste gas containing naphthalene and saline contacts, temperature is reduced to below freezing point, moment condensation
Crystallization, promotes the naphthalene in waste gas to tighten and unites, and forms large grained crystallization, and recycling efficiency is greatly promoted.
(4) the closed loop circulatory system is used in retracting device of the invention, the generation for washing naphthalene sewage is effectively reduced, effectively
Reduce the pollution destruction to environment.
(5) retracting device floor space of the invention is small, can complete to reclaim without other external system or equipments,
Material recycle mode is convenient, and flexibly the naphthalene purity of recovery is high, can be used directly as raw material without exquisiteness.
Brief description of the drawings
Fig. 1 is the structural representation of the retracting device containing naphthalene waste gas in embodiment.
Wherein, 1, shell；2nd, brine recycling chamber；3rd, crystallisation chamber；4th, first material collecting tank；5th, second material collecting tank；
6th, deflector；7th, the first wind deflector；8th, the second wind deflector；9th, the 3rd wind deflector；10th, the first activated adoption packing layer；11st, second
Activated adoption packing layer；12nd, porous separator；13rd, enclosed baffle；14th, frequency conversion Cycle Unit；15th, frequency conversion freezing unit；16、
Deposition material collecting tank；17th, spray equipment；18th, exhaust gas inlet pipe；19th, waste gas outlet pipe；20th, brine pipeline；21st, steam pipe
Road；22nd, refrigerating coil；23rd, evacuated tube；23 ', evacuated tube.
Specific embodiment
With reference to specific embodiment and Figure of description, the invention will be further described.
Embodiment
The retracting device containing naphthalene waste gas as described in Figure 1, including shell 1, the brine recycling positioned at the bottom of shell 1 closed
Chamber 2 and the crystallisation chamber 3 positioned at the top of brine recycling chamber 2, first material collecting tank 4 and second material collecting tank 5.
The top of brine recycling chamber 2 install enclosed baffle 13 and porous separator 12, enclosed baffle 13 by brine recycling chamber 2 with
Crystallisation chamber 3 is mutually isolated, and porous separator 12 then can be by salt solution.Brine recycling chamber 2 is passed through the chlorine of 15% mass fraction
Change calcium solution, brine recycling chamber 2 is connected with the frequency conversion freezing unit 15 being arranged on the outside of retracting device, and inside is provided with refrigerator tray
Pipe 22, by the temperature for controlling salt solution so that the temperature control of retracting device exists<20℃.There is evacuated tube in brine recycling chamber 2
23, for draining liq.
Crystallisation chamber 3 is located at the top of brine recycling chamber 2, is made up of shell wall, enclosed baffle 13 and deflector 6, and deflector 6 inclines
Tiltedly set so that the bottom of crystallisation chamber 3 is big, smaller at opening, is easy to salt solution along the overflow of deflector 6.The bottom of crystallisation chamber 3 is provided with
Deposition material collecting tank 16, deposition material collecting tank 16 is draw and insert-type, and bottom is 60 mesh stainless steel filtering nets.Crystallisation chamber 3 also sets
There is evacuated tube 23 ', for draining liq.
Exhaust gas inlet pipe 18 is installed on the shell 1 of retracting device, because crystallisation chamber 3 has equally been passed through salt solution, it is ensured that useless
The bottom of gas inlet tube 18 is extend under liquid level.The molten naphthalene device of the other end of exhaust gas inlet pipe 18 connection is passed through waste gas containing naphthalene, side
Jet chimney 21 is also associated with, junction is provided with valve.
Porous separator 12 is provided with the second wind deflector 8 so that deflector 6, the second wind deflector 8 and the shape of porous separator 12
Into the trapezium structure of upward opening, upper end is big, and lower end is small, it is ensured that the wind deflector 8 of deflector 6 and second is symmetrical arranged.First material
Between the mounting guiding board 6 of collecting tank 4 and the second wind deflector 8 so that left between first material collecting tank 4 and porous separator 12
Space, the bottom of first material collecting tank 4 is stainless steel filtering net, and is covered with water penetration filter membrane, from this filter membrane of 200 mesh fluorine U.S., the
One material collection groove 4 is similarly draw and insert-type.
The one end of first wind deflector 7 is fixed on the inner side of shell 1, and opposite side is extend between the wind deflector 8 of deflector 6 and second,
First wind deflector 7 be arranged in parallel with deflector 6 so that form gas between the first wind deflector 7 and the wind deflector 8 of deflector 6 and second
Road.First activated adoption packing layer 10, the first activated adoption packing layer are installed between the first wind deflector 7 and the second wind deflector 8
10 are made up of flase floor and 50 mesh activated carbon stratum reticulares and activated carbon corrugated plating successively, and active carbon net lamellar spacing is with activated carbon ripple
Plate side arrangement support (cellular), forms flow-guiding structure distribution, to prevent the first activated adoption packing layer 10 from blocking and being easy to
The brilliant first material collecting tank 4 that flows into of naphthalene is reclaimed.
The inner side of shell 1 is additionally provided with the 3rd wind deflector 9, and the 3rd wind deflector 9 equally be arranged in parallel with the first wind deflector 7, and second
Activated adoption packing layer 11 is then arranged between the second wind deflector 8 and the 3rd wind deflector 9, the structure of the second activated adoption packing layer 11
It is identical with the first activated adoption packing layer 10.Second material collecting tank 5 be arranged on the bottom of the second activated adoption packing layer 11, and with
Opening is provided between 3rd wind deflector 9 as air flue, second material collecting tank 5 is identical with the structure of first material collecting tank 4.
Waste gas outlet pipe 19 is additionally provided with shell 1, waste gas outlet pipe 19 is connected with frequency conversion vacuum plant, naphthalene waste gas will be contained and taken out
To in emission-control equipment, complete alkali cleaning and neutralize.
Retracting device outside is additionally provided with the connection of frequency conversion Cycle Unit 14 brine recycling chamber 2, by brine pipeline 20 by salt solution
In salt solution feeding retracting device in torus 2, three spray equipments 17 are sequentially installed with brine pipeline 20, corresponded respectively to
Crystallisation chamber 3, the first activated adoption packing layer 10 and the second activated adoption packing layer 11, spray equipment 17 are sprayed using vertical water curtain
Head, is connected by flange with brine pipeline 20, and be provided with ball valve be easy to open and close adjust.The end of brine pipeline 20 is also equipped with valve
It is easy to be vented and dredges.
Retracting device is provided with long-range central control system and distance-transmission pressure gauge, the pressure in distance-transmission pressure gauge detection retracting device
Power, and control frequency conversion vacuum plant to adjust pressure by long-range central control system.When device pressure/vacuum degree exceedes setting range
When, power or the termination of pumping of frequency conversion vacuum plant are reduced automatically, otherwise when device pressure/vacuum degree reaches setup parameter lower bound,
The automatic power for opening pump or improving frequency conversion vacuum plant, when pressure or vacuum exception, beyond setting range, electronics breather valve is certainly
It is dynamic to open and send alarm, it is ensured that system safety operation.
Far transmission level meter and liquid level electronic regulating valve, far transmission level meter detection brine recycling are installed in brine recycling chamber 2
Liquid level in chamber 2, and control liquid level electronic to adjust valve regulation liquid level by long-range central control system.Liquid in brine recycling chamber 2
When position reaches setup parameter lower bound, liquid level electronic regulating valve moisturizing is automatically turned on, when liquid level reaches the arrange parameter upper limit, automatically
Close liquid level electronic regulating valve to stop adding water, police is sent when liquid level is less than setting alarm parameters or higher than setting alarm parameters
Report.
Retracting device is provided with teletransmission thermometer, the temperature in teletransmission thermometer detection retracting device, and by long-range
The control system control frequency conversion freezing regulation temperature of unit 15.When temperature is less than design temperature parameter lower limit, frequency conversion refrigerator is reduced
The power of group 15 or termination of pumping, when temperature is higher than design temperature parameter upper limit, opens pump or improve frequency conversion freezing unit 15 automatically
Power.When temperature is less than design temperature alarm parameters lower limit or higher than the design temperature alarm parameters upper limit, alarm is sent.
Above by the module that long-range central control system is controlled, operational factor and open/close states can be manually adjusted.
Rectangle manhole can also be set on the shell 1 of retracting device, facilitate staff clear into carrying out in retracting device
Reason, in order to periodically being cleared up or being overhauled.
Operation principle
Salt solution is all passed through in brine recycling chamber 2 and crystallisation chamber 3, has been realized by frequency conversion Cycle Unit 14 and spray equipment 17
The circulation of liquid, frequency conversion Cycle Unit 14 sends into the salt solution in brine recycling chamber 2 by brine pipeline 20 from spray equipment 17
Crystallisation chamber 3, the first activated adoption packing layer 10 and the top of the second activated adoption packing layer 11, cause the liquid level of crystallisation chamber 3 to rise, knot
The meeting overflow of brilliant room 3, first material collecting tank 4 is entered into from the deflector 6 of side, is finally back to brine recycling chamber 2.
The shell of retracting device is a structure for closing, and waste gas is extracted from waste gas outlet pipe 19 by frequency conversion vacuum plant,
So that forming negative pressure in retracting device, waste gas containing naphthalene is entered into retracting device from exhaust gas inlet pipe 18, gone out from waste gas again afterwards
Mouth pipe 19 goes out to enter emission-control equipment.
Because exhaust gas inlet pipe 18 is extend into crystallisation chamber 3, under the liquid level of salt solution, in the effect of frequency conversion vacuum plant
Under, waste gas containing naphthalene can be inhaled into the salt solution in crystallisation chamber 3, and forms air flotation effect.Now, frequency conversion freezing unit 15 passes through
Control the temperature of salt solution so that the temperature in retracting device is maintained<20 DEG C, the salt in naphthalene steam and crystallisation chamber 3 in waste gas
After water contact, most of naphthalene steam can be crystallized rapidly, formed small flat crystal and floated.
The spray equipment 17 on the top of crystallisation chamber 3 constantly sprays salt solution, by the waste gas containing naphthalene after salt solution primary crystallization again
With the saline contacts of spray, secondary crystallization treatment；Constantly spray salt solution is also resulted in the liquid level of crystallisation chamber 3 spray equipment 17 simultaneously
Rise so that the flat crystal of floating is entered into first material collecting tank 4 with deflector 6, due to the bottom of first material collecting tank 4
Portion is water penetration filter membrane so that separation of solid and liquid；Salt solution is eventually back to salt solution by water penetration filter membrane and porous separator 12
In torus 2.
First activated adoption packing layer 10 is arranged between the first wind deflector 7 and the second wind deflector 8 so that by tying twice
When the waste gas containing naphthalene of crystalline substance treatment is by air flue, the naphthalene steam in waste gas can be adsorbed by activated adoption packing layer, by the first activity
The spray equipment that 10 top of adsorption stuffing layer are set, carries out third time crystallization treatment, and shower is entered to first material collecting tank 4
Row separation of solid and liquid, reaches three subcrystalline effects.
Because the second activated adoption packing layer 11 is arranged between the second wind deflector 8 and the 3rd wind deflector 9, by three knots
The waste gas containing naphthalene of crystalline substance treatment may proceed to by the second activated adoption packing layer 11 so that the naphthalene steam in waste gas can be by activated adoption
Packing layer is adsorbed, and continuing through the spray equipment of top setting carries out the 4th crystallization, and shower is entered to the second material collecting tank 5
Row separation of solid and liquid, reaches four subcrystalline effects；Waste gas containing naphthalene eventually from the wind deflector 9 of second material collecting tank 5 and the 3rd it
Between air flue go out, into waste gas outlet pipe 19.
Performance test
Single batch is to adding species abundance in Baosteel in Shanghai refined naphthalene (content ＞ 99%, wherein containing a small amount of impurity such as tetrahydrochysene in molten naphthalene device
Change naphthalene, benzonitrile, benzo-thiophene, phenols, methyl coumarone etc.) amount to 11 tons, it can be seen from raw material refined naphthalene component, 99% refined naphthalene contains phenol
About 0.001%, it can be seen that exhaust gas production containing phenol is minimum, adsorption treatment can be completed in the retracting device containing naphthalene waste gas.
11 tons of refined naphthalenes are melted to liquid, about 85 DEG C~90 DEG C of melt temperature, melt naphthalene device blow-down pipe and contain naphthalene waste gas
The exhaust gas inlet pipe 18 of retracting device is connected, and setting frequency conversion vacuum plant by long-range central control system maintains negative pressure parameter in device
It is (- 0.02Mpa~-0.05Mpa) that electronics breather valve arrange parameter is (- 0.05Mpa~0.5Mpa), alarm arrange parameter
For (<- 0.05Mpa alarm and>3Mpa alarms), frequency conversion is set by long-range central control system and freezes machine set control device temperature parameter
For (10~20 DEG C), system configuration malleation safety valve and negative pressure relief valve, waste gas containing naphthalene are right after a whole set of retracting device is reclaimed
Waste gas containing naphthalene in exhaust gas inlet pipe 18 and waste gas outlet pipe 19 detected, testing result such as table 1 below：
Detection data containing naphthalene waste gas in table 1, exhaust gas inlet pipe and waste gas outlet pipe
It can thus be appreciated that the rate of recovery of the retracting device in embodiment is up to 93%, while reducing atmosphere pollution, ensure
Employee's health of human body safety, and for enterprise brings economic benefit higher.
Waste gas containing naphthalene after recycling is connected with frequency conversion vacuum plant, and is finally flowed through emission-control equipment and entered traveling one
Step processes (one-stage water wash, two grades of alkali cleanings, charcoal absorptions, exhaust air rate 5000m/h), final high altitude discharge.
Claims (9)
1. a kind of retracting device containing naphthalene waste gas, it is characterised in that including shell, the brine recycling positioned at outer casing bottom closed
Chamber and the crystallisation chamber positioned at brine recycling chamber top and at least one material collection groove；
Enclosed baffle is set between the brine recycling chamber and crystallisation chamber；Water conservancy diversion is set between the crystallisation chamber and material collection groove
Plate；Porous separator is set between the brine recycling chamber and material collection groove, and material collection trench bottom is stainless steel filtering net,
And it is covered with water penetration filter membrane；
The brine recycling chamber connection frequency conversion freezing unit；The crystallisation chamber top is at least provided with a spray equipment, the spray
Shower device is connected by frequency conversion Cycle Unit with brine recycling chamber；The shell is provided with exhaust gas inlet pipe and waste gas outlet pipe,
The exhaust gas inlet pipe is extend into crystallisation chamber, and the waste gas outlet pipe is connected with frequency conversion vacuum plant.
2. the retracting device containing naphthalene waste gas according to claim 1, it is characterised in that the porous separator is provided with
Two wind deflectors, the deflector, the second wind deflector and porous separator form the structure of upward opening, and the first material is collected
Groove is arranged between deflector and the second wind deflector；The shell is provided with the first wind deflector so that first wind deflector with lead
Air flue is formed between stream plate and the second wind deflector；The first activated adoption is provided between first wind deflector and the second wind deflector to fill out
The bed of material, the first activated adoption packing layer top is at least correspondingly arranged a spray equipment.
3. the retracting device containing naphthalene waste gas according to claim 2, it is characterised in that the shell is additionally provided with the 3rd wind-guiding
Plate, the second activated adoption packing layer is arranged between the second wind deflector and the 3rd wind deflector, the second activated adoption packing layer top
At least it is correspondingly arranged a spray equipment；The second material collecting tank is located at the second activated adoption packing layer bottom, and with the
Opening is provided between three wind deflectors as air flue.
4. the retracting device containing naphthalene waste gas according to claim 1, it is characterised in that the exhaust gas inlet pipe connects steam
Pipeline.
5. the retracting device containing naphthalene waste gas according to claim 1, it is characterised in that the crystallisation chamber bottom is provided with deposition
Material collection groove, the deposition material collecting tank bottom is stainless steel filtering net.
6. the retracting device containing naphthalene waste gas according to claim 1, it is characterised in that the material collection groove is draw and insert-type
Material collection groove.
7. the retracting device containing naphthalene waste gas according to claim 1, it is characterised in that the retracting device is provided with remotely
Central control system and distance-transmission pressure gauge and electronics breather valve；Pressure in the distance-transmission pressure gauge detection retracting device, and by remote
Journey central control system controls frequency conversion vacuum plant and electronics breathing pressure regulating valve.
8. the retracting device containing naphthalene waste gas according to claim 7, it is characterised in that be provided with the brine recycling chamber
Far transmission level meter and liquid level electronic regulating valve；Liquid level in far transmission level meter detection brine recycling chamber, and by long-range
Control system control liquid level electronic regulation valve regulation liquid level.
9. the retracting device containing naphthalene waste gas according to claim 7, it is characterised in that the retracting device is provided with teletransmission
Thermometer；Temperature in the teletransmission thermometer detection retracting device, and control frequency conversion to freeze unit by long-range central control system
Regulation temperature.
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| DE202004003494U1 (en) * | 2004-03-03 | 2004-07-01 | Schertz, Mario | A method for clarifying dust laden air in workshops has the air drawn into a water jet and through a water bath before returning to the room |
| CN202144480U (en) * | 2011-05-31 | 2012-02-15 | 昆明安厦混凝土外加剂有限责任公司 | Raw material recovery device |
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| CN106730973B (en) | 2022-08-05 |
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