CN108499146A - High-purity feed separation ultrasonic wave bubble column rectifier unit and method - Google Patents
High-purity feed separation ultrasonic wave bubble column rectifier unit and method Download PDFInfo
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- CN108499146A CN108499146A CN201710113724.0A CN201710113724A CN108499146A CN 108499146 A CN108499146 A CN 108499146A CN 201710113724 A CN201710113724 A CN 201710113724A CN 108499146 A CN108499146 A CN 108499146A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
- B01D3/16—Fractionating columns in which vapour bubbles through liquid
- B01D3/18—Fractionating columns in which vapour bubbles through liquid with horizontal bubble plates
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/14—Fractional distillation or use of a fractionation or rectification column
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C7/00—Purification; Separation; Use of additives
- C07C7/04—Purification; Separation; Use of additives by distillation
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G7/00—Distillation of hydrocarbon oils
- C10G7/12—Controlling or regulating
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- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Engineering & Computer Science (AREA)
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- Water Supply & Treatment (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
- Physical Or Chemical Processes And Apparatus (AREA)
Abstract
The invention belongs to petrochemical industry rectifying technical field of rectification, and in particular to a kind of high-purity feed separation ultrasonic wave bubble column rectifier unit and method.Including bubble column, include multiple tower trays and bubble-cap in bubble column, it further include supersonic generator, at least two distributors are respectively set in the position that each tower tray is corresponded on bubble column outer wall, each distributor is connect with ultrasonic transducer, the angle of one distributor one ultrasonic transducer of correspondence, ultrasonic transducer and distributor is 45 ° 135 °, and ultrasonic transducer is connected with supersonic generator again.Ultrasonic wave effectively and is uniformly transmitted on tower tray using suitable angle, strengthen heat transfer and mass transfer of the gas-liquid phase materials on tower tray, have the function that improve plate efficiency, it is particularly suitable for number of trays and is more than 60 pieces, high-purity lock out operation of the material of high-purity (99% or more), the present invention also provides a kind of methods using the device.
Description
Technical field
The invention belongs to petrochemical industry rectifying-technical field of rectification, and in particular to a kind of high-purity feed separation use is super
Sound wave bubble column rectifier unit and method.
Background technology
Bubble column is a kind of tower vapor-liquid contacting apparatus for carrying out rectifying, it is the faucet device of large-scale Petrochemical Enterprises, bubble
Cover tower is widely used in rectifying and gas and absorbs, the larger process of energy expenditure during investment accounting is larger and chemical process,
Operation conditions has a decisive role the benefit of single unit system.Multiple-layer horizontal column plate is housed in tower, there are several on plate
For steam (or gas) by short tube, respectively covering root edge has the bubble-cap of slot or sulculus thereon, and overflow pipe is housed.Operation
When, liquid is continuously entered by the top of tower, is declined through overflow pipe step by step tray, and accumulate liquid layer on each plate, and fluid-tight is formed；Steam
(or gas) is then entered by bottom of tower, via on bubble-cap root edge slot or sulculus be dispersed into minute bubbles, come into full contact with liquid,
And liquid level is reached across liquid layer, then rise up into last layer column plate.Its basic principle be by the multiple partial gasification of liquid mixture and
Partial condensation realizes the unit operation of separation purpose using the characteristic of wherein each component volatility different (relative volatility, α).
It cannot reach vapor liquid equilibrium state, i.e., due to being limited by mass transfer time and machine-building and installation in tower in actual production
Low boiling component contained in column plate upflowing vapor is low compared with low boiling point concentration contained in steam when balancing each other, therefore actual plate
Number is greater than theoretical cam curve, the ratio of theoretical cam curve and number of actual plates, referred to as plate efficiency.The advantages of bubble cap plate is
Operating flexibility is larger, and column plate is not easy to plug；The disadvantage is that it is complicated, cost is high, plate upper liquid thickness, plate pressure drop is big, especially
Plate efficiency is relatively low, leads to that production capacity is low or product purity is not high.
During distillation operation, in order to improve the purity of bubble column purpose product, while containing for non-purpose product is reduced
Amount improves existing plate efficiency in the case where every process conditions such as feedstock property, raw material inventory and reflux ratio are constant
Method mainly has following a few classes：(1) efficient tower tray is replaced；(2) efficient tower packing is replaced；(3) increase number of trays and tower
High (4) change tower structure etc..
All of above measure must all carry out device halt production transformation, and the investment for trnasforming urban land and equipment that device is not only significantly increased are thrown
Money, it is also necessary to device stop production, increase driving and parking expense and material consumption energy consumption, economic benefit is caused to be lost in.It is raw for such transformation
Production device must also carry out comprehensive evaluation of economic benefit and risk security evaluation, be " wasting man power and money ".
How in the case where not changing tower agent structure and increasing a small amount of equipment investment, technical indicator is carried out to it
It is promoted, is Most current rectification production device problems faced.Column efficiency is referred mainly to as measurement rectifier unit technical merit
Mark, column efficiency is higher, and the target product purity of device is higher, and the economic technology of device is better.Current traditional energy increasingly
It reduces (when problem of environmental pollution is increasingly valued by people！The rectifying for reducing regurgitant volume with energy-saving effect
Tower is saving energy consumption, is reducing environmental pollution, having important realistic meaning in terms of reducing production cost.
Invention content
The critical issue that the present invention solves be how by ultrasonic wave effectively and be uniformly transmitted on tower tray, for this
Purpose, the present invention provide a kind of high-purity feed separation ultrasonic wave bubble column rectifier unit, using suitable angle by ultrasonic wave
It effectively and is uniformly transmitted on tower tray, is acted on using the microjet of ultrasonic wave, gas-liquid interface is significantly increased, strengthen liquid phase object
Expect the heat transfer on tower tray and mass transfer, have the function that improve plate efficiency, is suitable for number of trays and is more than 60 pieces, high-purity
High-purity lock out operation of the material of (99% or more), the present invention also provides a kind of methods using the device.
High-purity feed separation of the present invention ultrasonic wave bubble column rectifier unit, including bubble column, the interior packet of bubble column
Multiple tower trays and bubble-cap are included, further includes supersonic generator, the position that each tower tray is corresponded on bubble column outer wall is respectively set
At least two distributors, each distributor are connect with ultrasonic transducer, and a distributor corresponds to a ultrasonic transducer, surpasses
The angle of acoustic wave transducer and distributor is 45 ° -135 °, and ultrasonic transducer is connected with supersonic generator again.
Wherein：
All materials carry out gas-liquid contact, the liquid phase material of downlink and the gas phase risen below tower on all tower trays in tower
In tower tray contact reverse heat and mass occurs for material, while all materials undergo ul-trasonic irradiation on all tower trays, strengthens gas
Heat transfer and mass transfer of the liquid phase material on tower tray improve the purity of separation product.Ultrasonic transducer and distributor of the present invention
Angle is 45 ° -135 °, effectively and is uniformly transmitted on tower tray ultrasonic wave by using suitable angle, utilizes ultrasonic wave
Microjet effect, be significantly increased gas-liquid interface, strengthen heat transfer and mass transfer of the gas-liquid phase materials on tower tray, reach raising column plate
The effect of efficiency, inventor it has been investigated that, when the angle of ultrasonic transducer and distributor be less than 45 ° or be more than 135 °
When, the reflection effect of ultrasonic wave is significantly increased, and energy attenuation will be caused serious, is unfavorable for the effect of ultrasonic wave microjet effect.
The angle of ultrasonic transducer and distributor is 45 ° -135 °, preferably 75 ° -105 °.
The distributor that the present invention preferably corresponds to each tower tray setting is to be uniformly arranged, the center line face tower tray circle of distributor
The heart, the ultrasonic wave for finally making radiation evenly, meet the sound intensity requirement of intensified by ultrasonic wave heat and mass, prevent local energy excessively
It concentrates.Ultrasonic wave is by curved surface with to based on tower internal emission, weakening the outside ineffective radiation of ultrasonic wave.
As a preferred solution, three distributors are arranged in the position that some tower tray is corresponded on bubble column outer wall,
A distributor is respectively set on the corresponding bubble column outer wall of upper and lower two tower trays adjacent with the tower tray.It is formed from top to bottom
Temperature, the distribution of the gradient of concentration, accelerate the separation of weight component in bubble column, improve the purity of separation product.
High-purity feed separation of the present invention is suitable for ultrasonic wave bubble column rectifier unit suitable for all materials point
From operation, it is particularly suitable for number of trays and is more than 60 pieces, high-purity lock out operation of high-purity (99% or more) material.
Ultrasonic transducer is cylindrical or cone, and the end face of ultrasonic transducer is plane or curved surface.
The thickness of distributor is 1~90mm.Preferred thickness is in 15~50mm.
The connection type of ultrasonic transducer and supersonic generator is welding or flanged joint.
It is equipped with cooler between the corresponding ultrasonic transducer of each distributor.In order to avoid the heat transfer of bubble column
Energy converter is damaged, cooler can be installed between energy converter and distributor, which can be fin structure, can also be it
His configuration, it acts as reduce the exchange of bubble-cap tower tray floor can the heat transfer of device reduce its efficiency to prevent energy converter from overheating.
Distributor is metal material, has higher rigid requirements；The material of distributor is suitable for the conduction of ultrasonic wave, no
Easily decaying can be the one such or several steel alloy of aluminium, iron, nickel, copper, chromium, preferably iron.
Distributor can be plane or curved-surface structure.Distributor outer surface is preferably curved-surface structure.
Distributor ensures seamless rigid connection with tower wall, and flange screw formula can be used to connect or weld, the material of welding material
It should be identical as the metal material of distributor.
Supersonic generator can be mounted in explosion proof control case, and supersonic generator is connected with energy converter, energy converter is
Magnetostrictive transducer, piezoelectric ceramic transducer, ultrasonic transducer can well known various types.
For the applicable reliable and stable supersonic generator and energy converter of industry, maximum output power can only achieve
4KW or so, in practical application, can the rated power of long-period stable operation there was only 3KW or so, to extend the ul-trasonic irradiation time
Occasion, the work of multigroup ultrasonic wave can be set, can obtain and preferably put forward efficient effect.
It is a kind of using high-purity feed separation distillating method of ultrasonic wave bubble column rectifier unit, raw material is sent into
It carries out distillation separation in bubble column, includes multiple tower trays inside bubble column, the liquid phase material of downlink and the gas gas-phase objects of rising in tower
Material contact on each tower tray carries out reverse heat and mass, and the position that each tower tray is corresponded on bubble column outer wall is respectively provided to
Few two distributors, each distributor are connect with ultrasonic transducer, and a distributor corresponds to a ultrasonic transducer, ultrasound
Electric energy is converted to the ultrasonic wave of mechanical energy by wave producer by ultrasonic transducer, is then released to bubble by each distributor
Material in cover tower on tower tray accelerates the separation of weight component in bubble column with augmentation of heat transfer and mass transfer, improves separation product
Purity.
Flow direction of material in the ultrasonic wave and bubble column discharged by distributor on tower tray is in 45 ° -135 °.
Electric energy is converted to the mechanical energy of ultrasonic wave by supersonic generator by energy converter, and bubble-cap is released to by distributor
The ultrasonic energy of material is more uniform in tower.The ultrasonic energy of release is propagated with the uniform sound intensity, and the sound intensity of ultrasonic wave is
0.01-0.5w/cm2, preferably 0.05~0.4w/cm2。
Flow direction of material in the ultrasonic wave and bubble column discharged by distributor on tower tray is in 45 ° -135 °.
Ul-trasonic irradiation frequency is 10kHz~200kHz.
The present invention is arranged 1 set of supersonic generator and is connected with 1 bubble-cap tower tray floor, can by the invigoration effect of ultrasonic wave
The progress for accelerating column plate gas-liquid phase materials heat transfer and mass transfer, can accelerate the separation of material weight component in bubble column, to improve
Plate efficiency achievees the purpose that the purity for improving target product.
Device and method of the present invention are relatively more suitable for petroleum hydrocarbon separation.
The present invention utilizes the microjet effect of ultrasonic wave and its microjet institute to be used for petrochemical industry along with mechanical effect
Rectifying is combined ultrasonic technology with bubble-cap distillation technology, is formed the combination unit of ultrasonic wave and bubble column, can be made traditional bubble
The plate efficiency of cover tower significantly improves 5~20%.
The present invention does not change the rectifying pattern of conventional blister tower, only carries out simple machine transformation to existing bubble column, is steeping
Position increase ultrasonic generator and conduction device appropriate outside cover tower, and transmit the sound wave of certain frequency, so that it may to realize
Continuous ultrasonic wave distillation process, does not generate the additional three wastes, belongs to " environmentally protective technique ", can be saved for the development of society
Steel resources are saved, the service life of earth resource is extended；For the development of enterprise, the investment of device can be saved, is reduced dirty
Dye discharge, improves product quality, and pattern of improving management and administration reduces productive labor intensity, increases the safety of production.This method
And device is easily installed, internal structure is simple, can be used for the occasion of petroleum hydrocarbon rectifying, is also applied for chemical plant material rectifying point
From occasion, be especially suitable for oil plant PETROLEUM PROCESSING processing.
The present invention has the following advantages：
(1) a kind of high-purity feed separation ultrasonic wave bubble column essence that can generate the uniform sound intensity of device of the present invention
Ultrasonic wave effectively and is uniformly transmitted on tower tray using suitable angle, is acted on using the microjet of ultrasonic wave by distillation unit,
Gas-liquid interface is significantly increased, strengthens heat transfer and mass transfer of the gas-liquid phase materials on tower tray, has the function that improve plate efficiency.
Under the premise of not changing existing apparatus, increase the plate efficiency that bubble column just can be improved in easy equipment, increase product purity and
Yield reduces the reflux ratio of destilling tower, reduces operating cost, improves the economic benefit of device, simplifies structure design, just
It is operated in manufacture, installation and checking maintenance.
(2) present invention can extend the action time of ultrasonic wave under the action of certain ultrasonic wave sound intensity.Ultrasonic wave bubble-cap
Tower internal structure design is reasonable, convenient for manufacture, is easily installed, and is convenient for checking maintenance.Supersonic generator structure is independent, can be by solid
Determine the various occasions that frame is connected to rectification process operation, access way is simple, using flexible.In certain 500kt/a ethylene unit, adopt
With apparatus of the present invention and technique, the comparison rectifying evaluation experimental of ethylene rectifying column has been carried out, has been filled with ultrasonic wave bubble column is not added
The contrast test set, experiment process use, ultrasonic frequency 20Khz, ultrasonic wave sound intensity 0.2w/cm2.The effect of ultrasonic wave bubble column
Fruit is compared：The bubble-cap tower apparatus of ultrasonic wave, the tower top target product in bubble column are not loaded：Ethylene purity is 99.87%；It is identical
Under process conditions, the target product of load ultrasonic wave bubble-cap column overhead (using device of the present invention and technique)：Ethylene is pure
Degree is more than 99.95%, although only improving 0.08% or more, the raising of this purity is of great significance in the industrial production,
Because Ethylene purity only reaches chemical grade when being 99.87%, benefit is huge compared with the polymer grade ethylene difference that purity is 99.95%
Greatly.
(3) compared with prior art, the plate efficiency higher of ultrasonic wave bubble column of the invention, plate efficiency raising 2~
15%.
(4) present invention can be used in the rectifying separation process of oil, it can also be used in the separating technology of other hydro carbons, especially
It is suitble to the working process of material in gas-liquid two-phase tower.
(5) all materials carry out gas-liquid contact, the liquid phase material of downlink and rising below tower on all tower trays in tower
In tower tray contact reverse heat and mass occurs for gaseous phase materials, while all materials undergo ul-trasonic irradiation on all tower trays, by force
Change heat transfer and mass transfer of the gas-liquid phase materials on tower tray, improves the purity of separation product.
The distributor that the present invention preferably corresponds to each tower tray setting is to be uniformly arranged, the center line face tower tray circle of distributor
The heart, and angle having the same, the ultrasonic wave for finally making radiation evenly, meet intensified by ultrasonic wave heat and mass between each other
Sound intensity requirement, prevents local energy from excessively concentrating.Ultrasonic wave is by curved surface to based on tower internal emission, it is outside to weaken ultrasonic wave
Ineffective radiation.
As a preferred solution, three distributors are arranged in the position that some tower tray is corresponded on bubble column outer wall,
A distributor is respectively set on the corresponding bubble column outer wall of upper and lower two tower trays adjacent with the tower tray.It is formed from top to bottom
Temperature, the distribution of the gradient of concentration, accelerate the separation of weight component in bubble column, improve the purity of separation product.
(6) high-purity feed separation of the present invention is suitable for all materials with ultrasonic wave bubble column rectifier unit
Lock out operation is particularly suitable for number of trays and is more than 60 pieces, high-purity lock out operation of high-purity (99% or more) material.
Description of the drawings
Fig. 1 is the structural schematic diagram of high-purity feed separation ultrasonic wave bubble column rectifier unit of the present invention；
Fig. 2 is the vertical planing surface structural representation of high-purity feed separation ultrasonic wave bubble column rectifier unit of the present invention
Figure；
In figure：1- ultrasonic transducers, 2- coolers, 3- distributors, 4- bubble column outer walls, 5- liquid phase materials, 6- bubble-caps,
7- tower trays, 8- gaseous phase materials, 9- supersonic generators, 10- descending liquid mouths.
Specific implementation mode
With reference to embodiment, the present invention will be further described.
Embodiment 1
A kind of high-purity feed separation ultrasonic wave bubble column rectifier unit, including bubble column, interior bubble column includes multiple towers
Disk 7 and bubble-cap 6 further include supersonic generator 9, and three distributions are arranged in the position that some tower tray 7 is corresponded on bubble column outer wall 4
A distributor 3 is respectively set on the corresponding bubble column outer wall of adjacent with the tower tray 7 upper and lower two tower trays 74, often in device 3
A distributor 3 is connect with ultrasonic transducer 1, and distributor 3 corresponds to a ultrasonic transducer 1, ultrasonic transducer 1 with
The angle of distributor 3 is 45 ° -135 °, and ultrasonic transducer 1 is connected with supersonic generator 9 again.
The distributor 3 that corresponding each tower tray 7 is arranged is to be uniformly arranged, 7 center of circle of center line face tower tray of distributor 3, and
Mutual angle having the same, purpose are mainly that the ultrasonic wave of energy converter radiation carries out quadratic distribution, finally make radiation
Ultrasonic wave evenly, meet the sound intensity requirement of intensified by ultrasonic wave heat and mass, prevent local energy from excessively concentrating.
Using the distillation technique of the ultrasonic wave distilling apparatus, raw material is sent into bubble column and carries out distillation separation, steeped
Include multiple tower trays 7 inside cover tower, in tower the liquid phase material 5 with the gaseous phase materials 8 of rising of downlink contacted on each tower tray 7 into
The reverse heat and mass of row correspond to three distributors 3 of position setting of some tower tray 7 on bubble column outer wall 4, with the tower tray 7
A distributor 3, each distributor 3 and ultrasound are respectively set on adjacent 7 corresponding bubble column outer wall 4 of upper and lower two tower trays
Wave transducer 1 connects, and a distributor 3 corresponds to a ultrasonic transducer 1, and electric energy is passed through ultrasonic wave by supersonic generator 9
Energy converter 1 is converted to the ultrasonic wave of mechanical energy, then by each distributor 3 be released to the material in bubble column on tower tray 7 with
Augmentation of heat transfer and mass transfer accelerate the separation of weight component in bubble column, improve the purity of separation product, and a notch is arranged in tower tray
For descending liquid mouth 10, bubble-cap tower section liquid phase enters next layer of tower tray 7 by descending liquid mouth 10.
Embodiment 2
Embodiment of the present invention in the ultrasonic wave bubble column of certain 500kt/a ethylene unit rectifying column.
Certain ethylene unit, after feed change structure, the inventory of gas raw material amount increases, subsequent separation system ethylene distillation
Tower excess load, top ethylene purity be 99.88%, can not output downstream producer require product (Ethylene purity >=99.95%).
The characteristics of for the rectifying column, ultrasonic transducer and distributor are accessed on bubble cap tray, the dress provided using embodiment 1
It sets and technique strengthens the mass-and heat-transfer of gas-liquid material in tower tray using the cavitation of ultrasonic wave.In order to be compared, point
Experimental evaluation has been carried out not before accessing ultrasonic wave and after access ultrasonic wave.Test progress respectively 48 hours, process conditions are：Essence
125 pieces of tower column plate quantity is evaporated, reflux ratio 4.55, the distributor that experiment process uses is carbon steel structure, thickness 35mm, distributor
For curved surface, distributor area is 4.5m2, distributor connect using welding manner with tower tray, and experiment process uses ultrasonic frequency
The angle of 20Khz, energy converter and distributor is 90 °, ultrasonic wave sound intensity 0.2w/cm2。
The bubble-cap fractionating column of ultrasonic wave is not loaded, the tower top target product in bubble column：Ethylene purity is 99.88%；Phase
With under process conditions, ultrasonic wave bubble-cap column overhead target product is loaded：Ethylene purity is 99.96%, and the Technological Economy of device refers to
Mark is promoted obviously, and Ethylene purity reaches manufacture target level of product quality.By the processing of ultrasonic wave, it can be achieved that ethylene raw it is flexible
Adjustment, had both solved production problem, and had in turn ensured the outgoing of product.
Embodiment 3
Embodiment of the present invention in the ultrasonic wave bubble column of certain 500kt/a ethylene unit rectifying column.
Certain ethylene unit, former design treatment ability is smaller, and the scale economy of device is poor.It is excellent that device product will reach polymer grade
When grade product product (Ethylene purity >=99.95%), ethylene hourly output is only 52 tons, once inventory increases, later separation
System ethylene rectifying column excess load, tower top are unable to reach polymer grade top grade product product.The characteristics of for the rectifying column, in bubble column
Ultrasonic transducer and distributor are accessed on disk, the device and technique provided using embodiment 1 is made using the cavitation of ultrasonic wave
With strengthening the mass-and heat-transfer of gas-liquid material in tower tray.In order to be compared, respectively before accessing ultrasonic wave and access ultrasonic wave
After carried out experimental evaluation.Test progress respectively 48 hours, process conditions are：125 pieces of rectifying tower plates quantity, reflux ratio
4.62, the distributor that experiment process uses is carbon steel structure, and thickness 35mm, distributor is curved surface, and distributor area is
4.5m2, distributor connect using welding manner with tower tray, and experiment process uses ultrasonic frequency 20Khz, energy converter and distributor
Angle be 90 °, ultrasonic wave sound intensity 0.22w/cm2。
Do not load the bubble-cap fractionating column of ultrasonic wave, device product reach polymer grade top grade product product (Ethylene purity >=
99.95%) when, ethylene hourly output is only 52 tons；Under the conditions of same process, after loading ultrasonic wave, product reaches polymer grade
When top grade product product (Ethylene purity >=99.95%), ethylene hourly output reaches 58 tons, and output increased 11.5%, yield carries
It rises apparent.By ultrasonic wave distillation technology, it can be achieved that the target of enterprise's volume increase, and realizes apparent economic benefit.
Claims (10)
1. a kind of high-purity feed separation ultrasonic wave bubble column rectifier unit, including bubble column, interior bubble column includes multiple tower trays
(7) and bubble-cap (6), it is characterised in that：Further include supersonic generator (9), each tower tray is corresponded on bubble column outer wall (4)
(7) at least two distributors (3) are respectively set in position, and each distributor (3) connect with ultrasonic transducer (1), one point
Cloth device (3) corresponds to a ultrasonic transducer (1), and ultrasonic transducer (1) and the angle of distributor (3) are 45 ° -135 °, are surpassed
Acoustic wave transducer (1) is connected with supersonic generator (9) again.
2. high-purity feed separation according to claim 1 ultrasonic wave bubble column rectifier unit, it is characterised in that：It is corresponding every
The distributor (3) of a tower tray (7) setting is to be uniformly arranged, center line face tower tray (7) center of circle of distributor (3).
3. high-purity feed separation according to claim 1 ultrasonic wave bubble column rectifier unit, it is characterised in that：In bubble-cap
Three distributors (3) are arranged in the position that some tower tray (7) is corresponded on tower outer wall (4), adjacent with the tower tray (7) upper and lower two
A distributor (3) is respectively set on the corresponding bubble column outer wall (4) of a tower tray (7).
4. high-purity feed separation according to claim 1 ultrasonic wave bubble column rectifier unit, it is characterised in that：Ultrasonic wave
Energy converter (1) is cylindrical or cone, and the end face of ultrasonic transducer (1) is plane or curved surface.
5. high-purity feed separation according to claim 1 ultrasonic wave bubble column rectifier unit, it is characterised in that：Distributor
(3) thickness is 1~90mm；Distributor (3) is metal material, and distributor (3) outer surface is curved-surface structure.
6. high-purity feed separation according to claim 1 ultrasonic wave bubble column rectifier unit, it is characterised in that：Ultrasonic wave
The connection type of energy converter (1) and supersonic generator (9) is welding or flanged joint.
7. high-purity feed separation according to claim 1 ultrasonic wave bubble column rectifier unit, it is characterised in that：Each point
Cooler (2) is equipped between the corresponding ultrasonic transducer (1) of cloth device (3).
8. a kind of distillation side using any high-purity feed separation ultrasonic wave bubble column rectifier units of claim 1-7
Method, it is characterised in that：Raw material is sent into bubble column and carries out distillation separation, includes multiple tower trays inside bubble column, downlink in tower
Liquid phase material contacted on each tower tray with the gaseous phase materials of rising and carry out reverse heat and mass, it is corresponding on bubble column outer wall
The position of each tower tray is respectively set at least two distributors, each distributor and is connect with ultrasonic transducer, a distributor
Electric energy is converted to the ultrasonic wave of mechanical energy by a corresponding ultrasonic transducer, supersonic generator by ultrasonic transducer,
Then the material on tower tray is released in bubble column with augmentation of heat transfer and mass transfer by each distributor, accelerates weight in bubble column
The separation of component improves the purity of separation product.
9. distillating method according to claim 8, it is characterised in that：In the ultrasonic wave and bubble column discharged by distributor
Flow direction of material on tower tray is in 45 ° -135 °.
10. distillating method according to claim 8, it is characterised in that：Ul-trasonic irradiation frequency is 10kHz~200kHz,
The sound intensity of ultrasonic wave is 0.01-0.5w/cm2。
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112047963A (en) * | 2020-08-05 | 2020-12-08 | 芯越芯(南京)电子科技有限公司 | Production method of electronic-grade diethyl beryllium |
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