CN110339675A - A kind of method and apparatus removing isopropanol gas - Google Patents
A kind of method and apparatus removing isopropanol gas Download PDFInfo
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- CN110339675A CN110339675A CN201910541562.XA CN201910541562A CN110339675A CN 110339675 A CN110339675 A CN 110339675A CN 201910541562 A CN201910541562 A CN 201910541562A CN 110339675 A CN110339675 A CN 110339675A
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- isopropanol
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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
- B01D53/14—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 absorption
- B01D53/1487—Removing organic compounds
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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
- B01D53/14—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 absorption
- B01D53/1493—Selection of liquid materials for use as absorbents
-
- 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
- B01D53/14—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 absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2252/00—Absorbents, i.e. solvents and liquid materials for gas absorption
- B01D2252/20—Organic absorbents
- B01D2252/202—Alcohols or their derivatives
Abstract
The present invention discloses a kind of method and apparatus for removing isopropanol gas.The device includes inserted rotary packed bed, rotation demister, ring-shaped liquid distributor and redistributor, filler rotor, stator and shell；Filler rotor is the structured packing of 3D printing.Inserted rotary packed bed housing side air inlet pipe is passed through isopropanol gas, and inlet tube is passed through absorbing liquid, and top vent pipe is connected with purified gas workshop section, and the drain pipe of bottom is for being discharged absorbing liquid；The inserted rotary packed bed middle counter current contacting of isopropanol gas and absorbing liquid in the structured packing of 3D printing, under the shear action of high-speed rotating 3D printing structured packing, isopropanol gas and absorbing liquid repeatedly disperse, it is poly- simultaneously and redisperse, realize single device and repeatedly purify.The present apparatus increases gas phase less turbulence, reduces gas-phase pressure drop, improves the effective contact area of gas-liquid and interface renewal rate, improves isopropanol gas purification degree, and absorb isopropyl alcohol concentration and absorbing liquid utilization rate in rich solution.
Description
Technical field
The present invention relates to a kind of method and apparatus for removing isopropanol gas, belong to isopropanol removing field.
Background technique
Isopropanol be in petrochemical industry development history from petroleum first chemical products obtained, be a kind of important
Chemical products and raw material are widely used in the industry such as coating, medicine, pesticide, cosmetics and electronics production.But because of its saturation
Vapour pressure is lower, belongs to volatile organic compound, and the isopropanol gas largely evaporated in process of production is not only made
At serious environmental pollution, while causing the great wasting of resources.
Tower is one of most important equipment in chemical production process, the performance of tower assembly to the energy consumption of technical process/
Yield and the quality of product etc. have significant impact.Various fillers are industrially largely used in isopropanol absorption section at present
Tower, plate column etc., mass-transfer progress relies solely on gravity realization, since gravitational field is weaker, liquid phase stream in these equipment
For body with the flowing of thicker fluid layer in tower, the effective contact area of gas-liquid is smaller, the low, absorptivity that leads to that there are mass-transfer performances
Low, absorbing liquid internal circulating load is big, needs to build more seat heights can be only achieved separation requirement up to tens of meters absorption tower etc., this makes enterprise
Production cost, maintenance cost and energy consumption are increasing.
Isopropanol absorbing liquid absorbs isopropanol and belongs to gas-film controlled system.Therefore, in the exploitation of the design of mass transfer apparatus and filler
On, less turbulence, increase effective contact area of gas-liquid of Ying Tigao gas phase etc. strengthen mass transferring in gas phase purpose, raising suction to reach
Yield.
Cross_flow rotating packed bed is a kind of novel chemical process intensification equipment.On earth, by rotation generate from
Mental and physical efforts can realize Elevated Gravity.Under Elevated Gravity, the intermolecular molecule diffusion of different size and interphase mass transfer process are equal
Off field much faster than conventional articulated gravity, gas-liquid two-phase is under big hundreds times than earth gravitational field even thousands of times of Elevated Gravities
Porous media or duct in generate violent flow contact, huge shearing force by liquid tear at small liquid film, brin and
Drop produces huge alternate contact area, and can realize the quick update of phase interface, greatly improves delivery rate
Coefficient.Therefore, cross_flow rotating packed bed can greatly improve purifying rate as the equipment of removing isopropanol, reduce absorbing liquid
Internal circulating load reduces production and construction expense and occupied area, and then reduces the cost and energy consumption of removing isopropanol.
It is usually that ripple silk net, net metal, metal foam, Raschig ring etc. are filled out in the filler of rotary packed bed middle use
Material not can effectively solve the problem of gas and liquid two phases are uniformly distributed although providing place for gas-liquid contact, and for having
There are gas-liquid contacts for reaction it is insufficient, time of contact is short, resistance pressure drop is big the disadvantages of, lead to that mass transfer effect is undesirable, energy
It consumes excessively high.Therefore, the quality of filler fine structure directly affects the raising of mass-transfer efficiency and the height of process energy consumption.
Summary of the invention
The present invention is intended to provide a kind of method and apparatus for removing isopropanol gas, with inlaying for the structured packing of 3D printing
Rotary packed bed formula is absorption equipment, using isopropanol water solution as absorbing liquid, removes isopropanol gas by Physical Absorption method, inhales
Receive agent and isopropanol gas 3D printing structured packing it is inserted it is rotary packed bed in contact absorption, realization depth in a counter-current configuration
Degree removing isopropanol gas, and obtain higher concentration rich solution.
The present invention is based on strengthening gas phase to shear thought, enhances flow perturbation and increase the Relative sliding speed between gas and filler
Degree increases the effective contact area of gas-liquid, devises the inserted rotary packed bed of 3D printing structured packing, inserted rotation filler
The upper and lower packing box of bed installs two layers of 3D printing structured packing ring respectively, and one quiet one is dynamic, arranges in radially alternating, lower layer's packing box
It is rotated synchronously with motor, generates the super gravity field of gas-liquid contact, upper layer packing box is stationary.When liquid is sprayed to lower filler
When disk inner edge, is acted on by huge centrifugal force, tiny drop is cut by high-speed rotating filler, drop at this time also has
There is certain tangential velocity, very big with the probability of next layer of silk screen collision, in this process, liquid, which may be collided mutually, to be gathered simultaneously
It is cut afterwards by other silk screen layers, it is also possible to directly be collided with other layer of silk screen, it is also possible to return after splashing and silk screen layer collision is atomized, no
Disconnected to repeat this process, liquid is just torn into very thin drop brin liquid film, increases gas liquid interfacial area.At the same time, gas
Body other than with radial motion trend, has by inertia after a upper high-speed rotating packing ring and rotor turns
The dynamic identical circumferential movement trend in direction will receive wing when radially ecto-entad passes through the fin structure of next packing ring
The retardance of chip architecture, Relative sliding speed between filler increase, and weaken the circumferential movement trend of gas, and then increase pair
The disturbance and shear action of gas, reduce air film resistance, enhance mass transferring in gas phase.Isopropanol gas after being cleaned is through rotating
Purified gas workshop section is entered by exhaust outlet after entrainment in demister elimination gas, completes the absorbing liquid after absorbing in rotary filling
Material bed shell collection is gathered, and is discharged by leakage fluid dram.
The present invention provides a kind of methods for removing isopropanol gas, comprising the following steps:
The inserted rotary packed bed counter current contacting that isopropanol gas and absorbing liquid are passed through to 3D printing structured packing is revolved in high speed
The removing of isopropanol gas is completed under the shear action of the 3D printing structured packing turned；Control parameter is as follows:
Liquid gas volumetric flow ratio are as follows: 100~200；
The revolving speed of inserted rotary packed bed rotor are as follows: 100~1800 r/min；
Absorbing liquid are as follows: isopropanol water solution；
Absorption pressure are as follows: 0.1~2 MPa；
Absorb temperature are as follows: 20~100 DEG C；
The detailed process of the above method are as follows: absorbing liquid enters ring-shaped liquid distributor from inlet tube, is equably sprayed at high speed and revolves
The lower packing box inner edge of the 3D printing structured packing turned, is radially moved from filler inner edge to filler outer rim, replaces phase by sound
Between 3D printing structured packing ring cut into brin, drop, liquid film；
Meanwhile air inlet pipe is passed through isopropanol gas, gas is first subjected to being uniformly distributed for the static packing ring of packing box outer rim, to
The adjacent high-speed rotating lower layer's packing ring movement in inner edge, by the shear action of high-speed rotating lower layer's packing ring, then again
It is secondary to have and rotor rotation by when fin structure, gas radially rotates on the outside of static packing ring trend and dependence inertia
The identical circumferential movement trend in direction is eliminated or weakens, gas less turbulence increase, the gas finally redistributed continue to
Inner edge movement, the high speed shear by high-speed rotating lower wall packing ring, gas are cut layer by layer by the alternate packing ring of sound again
Gas film mass transfer resistance is efficiently reduced after cutting, increases gas phase less turbulence, and gas-liquid is in counter current contacting on the whole；Most afterwards through revolving
It is discharged after turning the entrainment in demister elimination gas by exhaust outlet, completes the absorbing liquid of absorption process in rotary packed bed shell
Body collection is gathered, and is discharged from leakage fluid dram, realizes the function of the multiple absorption cleaning of single device, improves and absorbs the dense of rich solution
Degree.
The present invention provides a kind of device for removing isopropanol gas, the inserted rotary filling including 3D printing structured packing
Expect bed, inserted rotary packed bed housing side is equipped with air inlet pipe and inlet tube, each leads into isopropanol gas and absorbing liquid, shell
Gas vent is equipped at the top of body, workshop section is connected with purified gas, and bottom is equipped with leakage fluid dram, for absorbing liquid, inlet and pump to be discharged
It is connected, leakage fluid dram is connected with rich solution slot；
The 3D printing structured packing it is inserted it is rotary packed bed include rotation demister, rotary packed bed shell, 3D printing
Structured packing, ring-shaped liquid distributor and redistributor, shaft and filler rotor, filler rotor is by fixed upper packing box
The lower packing box independently rotated is constituted, and the upper cover plate of upper packing box and rotary packed bed shell is fixed by cylinder, the cylinder
Upper end connects upper cover plate, and lower end connects at the top of upper packing box, and lower packing box is connect with shaft, and shaft lower end connects frequency modulation motor,
Filler rotor center is equipped with ring-shaped liquid distributor, and ring-shaped liquid distributor side is connected with inlet tube；
In above-mentioned apparatus, the inserted rotary packed bed enclosure interior is roughly divided into two connected spaces, on filler rotor
It is collection chamber on the inside of side, cylinder, is communicated with rotation demister；It is main chamber below filler rotor, is communicated with leakage fluid dram；Described turn
Axis is solid shafting, and shaft is set to the center of shell, and upper end is connected with rotation demister, and lower end is connected with frequency modulation motor, intermediate
It is connected with lower packing box, rotation demister and lower packing box high speed rotation is driven by motor.
In above-mentioned apparatus, the inlet tube is located at inserted rotary packed bed shell two sides, with ring-shaped liquid distributor
Connection, can two sides simultaneously feed liquor, can also unidirectional feed liquor.
In above-mentioned apparatus, the rotation demister is located at rotary packed bed top, and bottom connects collecting tank, rotates demister
It is connect with shaft, is driven by a motor rotation；The type and material for rotating filler in demister are unrestricted.
In above-mentioned apparatus, the ring-shaped liquid distributor includes ring pipe, Zhi Liuguan, and ring pipe is connected with inlet tube
It connecing, the Zhi Liuguan is uniformly arranged 2~6 perpendicular to ring pipe and along ring pipe, and direction is put on the inside of filler rotor center,
It is filler rotor on the outside of ring pipe, Zhi Liuguan, is uniformly provided with several holes on the tube wall of every Zhi Liuguan；
The hole is round hole or grate opening；The number in hole is determined by fluid flow and flow velocity.
In above-mentioned apparatus, the redistributor includes collecting tank, diversion pipe, and the collecting tank is located at the bottom of rotation demister
Portion connects with revolving bed inner walls, and collecting tank on the inside of diversion pipe and fixed upper packing box by being connected；In demister
The liquid thrown away is collected through shell and is flowed into collecting tank, flows to filler rotor center along diversion pipe；Further, the liquid collecting
Slot is circular ring shape, the U-lag that section is made of annular sheet, inner cylinder, revolving bed inner walls, and collecting tank is located at revolving bed
Case inside, annular sheet is perpendicular to inner walls and welds on the inner wall of the housing, for collecting the liquid in demister；Described
Inner cylinder is to be welded as a whole with the body concentric cylinder of shell, inner cylinder with annular sheet；Inner cylinder height is true by absorption flow quantity
It is fixed, collect height of the amount no more than the cylinder of liquid.Further, the diversion pipe is round tube, is arranged in liquid collecting
Below slot, be uniformly arranged 2~8, be uniformly arranged obliquely towards center of circle direction along collecting tank circumferencial direction and in upper packing box
Side is connected；The diameter of the diversion pipe is determined that absorbing liquid flow control is in 0.01~2 m/s by absorption flow velocity.
In above-mentioned apparatus, multi-turn groove is had on the upper and lower packing box, 3D printing structured packing is placed in recessed
It in slot, is fixed by bolt and packing box, prevents gas " short circuit "；By interior radial outer diameter, two layers of structured packing ring is installed respectively,
One quiet one is dynamic, and interleaved is all linked with one another, and there are gaps between adjacent two ring.
In above-mentioned apparatus, the 3D printing structured packing is collectively constituted by regular screen net structure and fin structure；It is described to fill out
Material is annular, and based on regular screen net structure, outside is equipped with fin structure.The spatial configuration of the regular screen net structure is:
It is disposed radially the tangent silk screen of several layers ring ring, each layer of silk screen is the annulus that several cubes surround, cube
The triangle being interconnected to form between face diagonal, body diagonal on three-dimensional space, and the gas-liquid channel of rule is improved and is filled out
The utilization rate of material promotes gas-liquid evenly dispersed, and reduces resistance；In order to guarantee uniform gas-liquid circulation passage, adjacent filaments
It has been staggered between stratum reticulare 15~45 °, has increased the probability of liquid and filler collision；The spatial configuration of the fin structure is:
The arcs that silk screen or en plaque are formed by bending are assemblied in the outer rim of screen net structure, are similar to flabellum chip architecture, curved direction with
The rotation direction of rotor is opposite.
Further, the regular screen net structure radially with a thickness of 20~50 mm；Along screen net structure central axes pair
Title opens two holes, and convenient for being fixed with bolt and packing box, aperture is 2~3 mm.
Further, the unit arcs of the fin structure are made up of silk screen or 10~50 ° of plate sigmoid,
Arc length is 30~80 mm, and the spacing between adjacent arcs is 10~40 mm, radially with a thickness of 5~20 mm.
Novelty of the invention is mainly reflected in: the 1. innovation of device: the inserted rotary packed bed advantage of design is:
First is that realizing high shear and disturbance simultaneously to liquids and gases, further strengthen mass-transfer progress, especially for gas-film controlled
Mass transport process, and the features such as filler is few, and sprinkle density is small, absorbing liquid circular flow and energy consumption can be reduced；Second is that present apparatus body
Product is smaller, with low investment, and driving and parking is convenient, flexible, and maintenance cost is low etc..
2. the innovation of filler: it is unobvious for mass transport process invigoration effect of the conventional filler for gas-film controlled system, with
And filler it is non-geometric it is symmetrical, dynamic balance is poor, there are a large amount of irregular channels and blind hole channels, filler utilization rate easily block, no
The problems such as easy-maintaining replacement, the present invention use 3D printing structured packing, construct regular and staggered liquid phase channel, increase
The less turbulence of gas phase and liquid phase and fully dispersed realizes coming into full contact with for gas and liquid, may be used also using packing layer is inlayed
High speed shear and disturbance further are realized to gas and liquid, effectively reduces gas film mass transfer resistance, enhances gas-liquid mass transfer
Process, improves absorptivity, and no blind hole channel can be improved filler utilization rate, reduce gas-phase pressure drop.
3. the innovation of technique: high-gravity technology being applied in traditional isopropanol gas purification workshop section, solve isopropyl
The problems such as alcohol gas absorptivity is low, rich solution concentration is not high enough, improves the removal efficiency of isopropanol gas, reduces gas after processing
Middle isopropyl alcohol concentration reduces the problems such as isopropanol gas subsequent processing is difficult, has stronger practical implementation meaning and section
It can environment protection significance.
Beneficial effects of the present invention:
(1) present invention removes isopropanol equipment using inserted rotary packed bed be used as, using isopropanol water solution as absorbent.
Isopropanol water solution is a kind of solution nontoxic, tasteless, free from environmental pollution, has good chemical stability and thermal stability,
It not reacting under conditions of use, and under working temperature, the solubility of isopropanol in aqueous solution obeys Henry's law, with
Pressure rise, temperature increase and the advantages that reduce；
(2) present invention uses 3D printing structured packing, and filler is generally that circumference is symmetrical, and consistent in density is light-weight, dynamic balance performance
Good, the manufacturing cycle is short, is easily changed, and has the liquid phase channel being evenly distributed, and is conducive to improve liquid phase distribution and reduce
Gas-phase pressure drop；With biggish effective ratio area and high filler utilization rate, it is capable of providing great gas liquid interfacial area
And interface renewal rate, so that mass-transfer efficiency and absorptivity greatly improve；
(3) isopropanol water solution absorption isopropanol belongs to gas-film controlled system.Using the inserted rotation of 3D printing structured packing
Packed bed improves gas film mass transfer coefficient as receive-only equipment, increases the effective contact area of gas-liquid two-phase, keeps gas-liquid two-phase fast
Fast adequately mixing；Absorbing liquid internal circulating load greatly reduces, while equipment volume significantly reduces, reduce investment and operation at
This；
(4) present invention can strengthen gas-film controlled process, be suitble to processing alcohols etc. volatile organic gases and some toxic, harmful
Foul gas etc.；
(5) process flow is simple, and occupied area is small, and circulating fluid volume is few, and equipment investment is few, and operating cost is low, and treatment effeciency is high；
Driving and parking is convenient, it is only necessary to a few minutes entire process flow can stable operation, industrial applications easy to accomplish.
Detailed description of the invention
Fig. 1 is inserted rotary packed bed structural schematic diagram；
Fig. 2 is the top view of 3D printing structured packing；
Fig. 3 is the unit arcs schematic diagram of fin structure；
Fig. 4 is the sectional view in Fig. 1 along line A-A；
Fig. 5 is the sectional view in Fig. 1 along line B-B；
Fig. 6 is the top view of ring-shaped liquid distributor；
Fig. 7 is the top view of liquid re-distributor；
Fig. 8 is the present invention for absorbing the process flow diagram of isopropanol gas.
In figure: 1- frequency modulation motor；2- shaft；3- leakage fluid dram；4- shell；5- air inlet pipe；6- inlet tube；7- cylinder；8- is led
Flow tube；9- collecting tank；10- rotates demister；11- gas vent；12- inner cylinder；13- ring-shaped liquid distributor；14- gas collection
Room；15- branch flow tube；The upper packing box of 16-；17-3D prints structured packing；Packing box under 18-；19- main chamber；20- lean liquid tank；
21- water pump；22- flowmeter；23- air blower；24- rich solution slot；25- is inserted rotary packed bed；26- bolt hole；27- structured wire
Web frame；28- fin structure；A- tail gas containing isopropanol.
Specific embodiment
The present invention is further illustrated below by embodiment, but is not limited to following embodiment.
As shown in figures 1-8, a kind of device removing isopropanol gas, the inserted rotation including 3D printing Novel standardized packing
Turn packed bed 25, inserted rotary packed bed 4 side of shell is equipped with air inlet pipe 5 and inlet tube 6, is passed through isopropanol gas and absorption
Liquid, case top are equipped with gas vent 11, and workshop section is connected with purified gas, and bottom is equipped with leakage fluid dram 3, for absorbing liquid to be discharged, into
Liquid pipe 6 is connected with water pump 21, and leakage fluid dram 3 is connected with rich solution slot 24.
The 3D printing Novel standardized packing it is inserted it is rotary packed bed include rotation demister 10, rotary packed bed shell
Body 4,3D printing structured packing 17, ring-shaped liquid distributor 13 and redistributor, shaft 2 and filler rotor, filler rotor is by solid
Fixed motionless upper packing box 16 and the lower packing box 18 independently rotated are constituted, with cylinder 7 and rotation filler at the top of upper packing box 16
The upper cover plate of bed shell is fixed, and lower packing box 18 is connect with shaft 2, and shaft lower end connects frequency modulation motor 1, and filler rotor center is set
There is ring-shaped liquid distributor 13, ring-shaped liquid distributor side is connected with inlet tube 6.
In above-mentioned apparatus, the inserted rotary packed bed enclosure interior is roughly divided into the space of two connections, filler
It is collection chamber 14 on the inside of rotor top, cylinder, is communicated with rotation demister；It is main chamber 19 below filler rotor, with drain pipe
It communicates；The shaft 2 is solid shafting, and shaft is set to the center of shell, and upper end is connected with rotation demister 10, lower end and frequency modulation
Motor 1 is connected, intermediate to be connected with lower packing box 18, drives rotation demister and lower packing box high speed rotation by motor.
In above-mentioned apparatus, the inlet tube 6 is located at inserted rotary packed bed shell two sides, with ring-shaped liquid distributor
Connection；
There are two inlet tube is set in the present embodiment, can two sides simultaneously feed liquor, can also unidirectional feed liquor.
In above-mentioned apparatus, the rotation demister 10 is located at rotary packed bed top, and bottom connects collecting tank 9, and rotation removes
Day with fog 10 is connect with shaft 2, is driven and is rotated by frequency modulation motor 1；Rotation demister 10 is provided with random packing or structured packing, fills out
The type and material of material are unrestricted.
In above-mentioned apparatus, the ring-shaped liquid distributor includes ring pipe 13, Zhi Liuguan 15, ring pipe and inlet tube phase
Connection, the Zhi Liuguan are uniformly arranged 2 perpendicular to ring pipe and along ring pipe, and direction is put on the inside of filler rotor center, ring
It is filler rotor on the outside of shape pipe, Zhi Liuguan, is uniformly provided with several holes on the tube wall of every Zhi Liuguan；The hole is round hole or lattice
Gate hole；The number in hole is determined by fluid flow and flow velocity.
The redistributor includes collecting tank 9, diversion pipe 8, and the collecting tank is located at rotation 10 lower part of demister, with rotation
Bed 4 inner wall of shell connects, and collecting tank on the inside of diversion pipe and fixed upper packing box 16 by being connected；Demister inward eddy is got rid of
Liquid out is collected through shell and is flowed into collecting tank 9, flows to filler rotor center along diversion pipe 8；
Further, the collecting tank 9 is circular ring shape, and section is by annular sheet, inner cylinder 12,4 inner wall of revolving bed shell
The U-lag of composition, collecting tank are located at revolving bed case inside, perpendicular to inner walls and weld on the inner wall of the housing, for collecting
The liquid of entrainment in demister；The inner cylinder 12 is welded with the body concentric cylinder of shell, inner cylinder and annular sheet
It is integrated.
In above-mentioned apparatus, the inner cylinder height is determined by absorption flow quantity, collects the amount of liquid no more than the circle
The height of cylinder.
In above-mentioned apparatus, the diversion pipe 8 is round tube, and diameter is determined by absorption flow velocity, and flow control exists
0.01~2 m/s is arranged below collecting tank；Diversion pipe is uniformly arranged 3 in the present embodiment, uniform along collecting tank circumferencial direction
Obliquely towards center of circle direction be arranged and be connected on the inside of upper packing box 16；
In above-mentioned apparatus, multi-turn groove is had on the upper and lower packing box, 3D printing structured packing is placed in groove 17
It is interior, it is fixed by bolt and packing box, prevents gas " short circuit "；By interior radial outer diameter, two layers of structured packing ring be installed respectively, one
Quiet one is dynamic, and interleaved is all linked with one another, and there are gaps between adjacent two ring.
In above-mentioned apparatus, the 3D printing Novel standardized packing is collectively constituted by regular screen net structure and fin structure；Institute
Filler is stated as annular, based on regular screen net structure, outside is equipped with fin structure.
The spatial configuration of the regular screen net structure is: being disposed radially the tangent silk screen of several layers ring ring, each layer
Silk screen is the annulus that several cubes surround, and is interconnected to form three-dimensional between the face diagonal of cube, body diagonal
Triangle spatially takes full advantage of the stability of triangle, and the gas-liquid circulation passage of rule improves the utilization of filler
Rate；In order to guarantee uniform gas-liquid circulation passage, it has been staggered between adjacent silk screen layer 15~45 °, has increased liquid and fill out
Expect the probability of collision.
In above-mentioned apparatus, the spatial configuration of the fin structure is: the unit arcs that silk screen or en plaque are formed by bending
It is assemblied in the outer rim of screen net structure, is similar to flabellum chip architecture, curved direction is opposite with the rotation direction of rotor.
In above-mentioned apparatus, the regular screen net structure radially with a thickness of 20~50 mm.Along screen net structure central axes
Two bolts hole 26 symmetrically are opened, convenient for being fixed with bolt and packing box, aperture is 2~3 mm.
In above-mentioned apparatus, the unit arcs of the fin structure are made up of silk screen or 10~50 ° of plate sigmoid
, arc length is 30~80 mm, and the spacing between adjacent arcs is 10~40 mm, radially with a thickness of 5~20 mm.
Under working condition, the mode of gas-liquid contact is inversely contacted across 3D printing Novel standardized packing；Liquid is uniform
When ground is sprayed onto 3D printing Novel standardized packing inner edge, is acted on by huge centrifugal force, be cut into tiny drop, at this time
Drop also there is certain tangential velocity, very big with the probability of next layer of silk screen collision, in this process, liquid may phase
Mutual collision is cut after gathering simultaneously by other silk screen layers, it is also possible to directly be collided with other layer of silk screen, it is also possible to be returned and be splashed rear and silk screen layer
Collision atomization, constantly repeats this process, liquid is just torn into very thin drop, brin and liquid film, greatly increases gas-liquid
Contact area.
Specific steps are as follows: opening motor 1, it is adjusted to suitable rotational speed, opens lean pump 21, flowmeter 22 is adjusted and controls
System absorbs flow quantity, and absorbing liquid is uniformly sprayed at 3D printing Novel standardized packing inner edge through ring-shaped liquid distributor, huge
It is moved along filler inner edge to outer rim under centrifugal force effect, isopropanol gas A is passed through inserted rotary packed bed 25 by gas feed 6
In, it is moved under the effect of the pressure from packing layer outer rim to inner edge, gas-liquid two-phase is vigorously mixed in a counter-current configuration, in this process
In, liquid is torn into the brin, drop and liquid film of millimeter to Nano grade, and completes isopropyl with cracking interface renewal rate
The absorption of alcohol gas, gas after absorption enter purified gas workshop section after rotation demister 10 eliminates entrainment, absorbing liquid by
The rotary packed bed collection of shell 4 is gathered, and flows into isopropanol rich solution slot 24 from liquid outlet 3.Isopropanol liquid in rich solution slot into
Enter destilling tower to be recycled.
Embodiment:
Motor is opened, the inserted rotary packed bed rotor of 3D printing Novel standardized packing is adjusted to 800 r/min, opens lean solution
Pump, adjusting fluid flowmeter control to absorb agent flux is 150 L/h, and absorbent enters inserted rotation filler from liquid-inlet
Bed, the isopropanol gas that concentration is 16000 ppm is passed through by gas feed inserted rotary packed bed, and adjusting tolerance is 40
m3/ h, liquid is uniformly distributed through ring-shaped liquid distributor and sprays into 3D printing Novel standardized packing inner edge, in huge centrifugation masterpiece
It is moved along filler inner edge to outer rim with lower, gas and absorbing liquid containing isopropanol countercurrently connect in 3D printing Novel standardized packing
Touching absorbs isopropanol gas, completes after absorbing, and the purification gas come out from gas vent is passed through purified gas workshop section, absorbent from
Liquid outlet discharge.Using the isopropyl alcohol concentration of gas chromatographic detection instrument analysis gas outlet, exit gas isopropanol is measured
Concentration is 960 ppm.
Claims (10)
1. a kind of method for removing isopropanol gas, it is characterised in that: with the inserted rotation filler of the structured packing of 3D printing
Bed is absorption equipment, using isopropanol water solution as absorbing liquid, removes isopropanol gas, absorbent and isopropyl by Physical Absorption method
Alcohol gas 3D printing structured packing it is inserted it is rotary packed bed in a counter-current configuration contact absorb, beaten in high-speed rotating 3D
Print the removing that isopropanol gas is completed under the shear action of structured packing；And obtain the rich solution of higher concentration.
2. the method for removing isopropanol gas according to claim 1, it is characterised in that the following steps are included:
Absorbing liquid enters ring-shaped liquid distributor from inlet tube, is equably sprayed under high-speed rotating 3D printing structured packing
Packing box inner edge is radially moved from filler inner edge to filler outer rim, by the 3D printing structured packing circular layer of sound interleaved
Layer cuts into brin, drop, liquid film；
Meanwhile air inlet pipe is passed through isopropanol gas, gas is first subjected to being uniformly distributed for the static packing ring of packing box outer rim, to
The adjacent high-speed rotating lower layer's packing ring movement in inner edge, by the shear action of high-speed rotating lower layer's packing ring, then again
It is secondary to have and rotor rotation by when fin structure, gas radially rotates on the outside of static packing ring trend and dependence inertia
The identical circumferential movement trend in direction is eliminated or weakens, gas less turbulence increase, the gas finally redistributed continue to
Inner edge moves, again the high speed shear by high-speed rotating lower wall packing ring, after gas is sheared by the alternate packing ring of sound
Gas film mass transfer resistance is efficiently reduced, gas phase less turbulence is increased, gas-liquid is in counter current contacting on the whole；Most removed afterwards through rotation
Day with fog is discharged after eliminating the entrainment in gas by exhaust outlet, and the absorbing liquid for completing absorption process is received in rotary packed bed shell
Collection is gathered, and is discharged from leakage fluid dram, realizes the function of the multiple absorption cleaning of single device, improves the concentration for absorbing rich solution.
3. the method for removing isopropanol gas according to claim 2, it is characterised in that: liquid gas volumetric flow ratio are as follows: 100
~200；The revolving speed of inserted rotary packed bed rotor are as follows: 100~1800 r/min；Absorption pressure are as follows: 0.1~2 MPa；It absorbs
Temperature are as follows: 20~100 DEG C.
4. a kind of device for removing isopropanol gas, the side for the described in any item removing isopropanol gases of claim 1 ~ 3
Method, it is characterised in that: including the inserted rotary packed bed of 3D printing structured packing, inserted rotary packed bed housing side is set
There are air inlet pipe and inlet tube, each leads into isopropanol gas and absorbing liquid, case top is equipped with gas vent, with purified gas workshop section
It is connected, bottom is equipped with leakage fluid dram, and for absorbing liquid to be discharged, inlet is connected with pump, and leakage fluid dram is connected with rich solution slot；
The 3D printing structured packing it is inserted it is rotary packed bed include rotation demister, rotary packed bed shell, 3D printing
Structured packing, ring-shaped liquid distributor and redistributor, shaft and filler rotor, filler rotor is by fixed upper packing box
The lower packing box independently rotated is constituted, and the upper cover plate of upper packing box and rotary packed bed shell is fixed by cylinder, the cylinder
Upper end connects upper cover plate, and lower end connects at the top of upper packing box, and lower packing box is connect with shaft, and shaft lower end connects frequency modulation motor,
Filler rotor center is equipped with ring-shaped liquid distributor, and ring-shaped liquid distributor side is connected with inlet tube.
5. the device of removing isopropanol gas according to claim 4, it is characterised in that: the inserted rotation filler
Bed enclosure interior is roughly divided into two connected spaces, is collection chamber on the inside of filler rotor top, cylinder, with rotation demister phase
It is logical；It is main chamber below filler rotor, is communicated with leakage fluid dram；The shaft is solid shafting, and shaft is set to the center of shell, on
End is connected with rotation demister, and lower end is connected with frequency modulation motor, intermediate to be connected with lower packing box, drives rotation demisting by motor
Device and lower packing box high speed rotation；
The inlet tube is located at inserted rotary packed bed shell two sides, connect with ring-shaped liquid distributor, simultaneously by two sides
Feed liquor or unidirectional feed liquor；
The rotation demister is located at rotary packed bed top, and bottom connects collecting tank, and rotation demister is connect with shaft, by electricity
Machine drives rotation；
Have multi-turn groove on the upper and lower packing box, 3D printing structured packing be placed in groove, by bolt with
Packing box is fixed, and gas " short circuit " is prevented；By interior radial outer diameter, two layers of structured packing ring is installed respectively, one quiet one is dynamic, alternately phase
Between, all linked with one another, there are gaps between adjacent two ring.
6. the device of removing isopropanol gas according to claim 4, it is characterised in that: the ring-shaped liquid distributor
Including ring pipe, Zhi Liuguan, ring pipe is connected with inlet tube, and the Zhi Liuguan is perpendicular to ring pipe and uniform along ring pipe
Setting 2~6, direction are put on the inside of filler rotor center, are filler rotor on the outside of ring pipe, Zhi Liuguan, every Zhi Liuguan's
Several holes are uniformly provided on tube wall；
The hole is round hole or grate opening；The number in hole is determined by fluid flow and flow velocity.
7. the device of removing isopropanol gas according to claim 4, it is characterised in that: the redistributor includes liquid collecting
Slot, diversion pipe, the collecting tank are located at the bottom of rotation demister, connect with revolving bed inner walls, collecting tank passes through water conservancy diversion
It is connected on the inside of pipe and fixed upper packing box；The liquid thrown away in demister is collected through shell and is flowed into collecting tank, and edge is led
Flow tube flows to filler rotor center.
8. the device of removing isopropanol gas according to claim 7, it is characterised in that: the collecting tank is annulus
Shape, the U-lag that section is made of annular sheet, inner cylinder, revolving bed inner walls, collecting tank are located in revolving bed shell
Side, annular sheet is perpendicular to inner walls and welds on the inner wall of the housing, for collecting the liquid in demister；The inner cylinder
It is to be welded as a whole with the body concentric cylinder of shell, inner cylinder with annular sheet；Inner cylinder height is determined by absorption flow quantity, is collected
Height of the amount of liquid no more than the cylinder；
The diversion pipe is round tube, is arranged below collecting tank, is uniformly arranged 2~8, uniform along collecting tank circumferencial direction
It is arranged obliquely towards center of circle direction and is connected with upper packing box inside；The diameter of the diversion pipe is determined by absorption flow velocity, is inhaled
Flow velocity control is received in 0.01~2 m/s.
9. it is according to claim 4 removing isopropanol gas device, it is characterised in that: the 3D printing structured packing by
Regular screen net structure and fin structure collectively constitute；The filler is annular, and based on regular screen net structure, outside is equipped with fin
Structure；
The spatial configuration of the regular screen net structure is: being disposed radially the tangent silk screen of several layers ring ring, each layer of silk screen
It is the annulus that several cubes surround, is interconnected to form three-dimensional space between the face diagonal of cube, body diagonal
On triangle, and the gas-liquid channel of rule improves the utilization rate of filler, promotes gas-liquid evenly dispersed, and reduce resistance；Phase
It has been staggered between adjacent silk screen layer 15~45 °, has increased the probability of liquid and filler collision；
The spatial configuration of the fin structure is: the unit arcs that silk screen or en plaque are formed by bending are assemblied in screen net structure
Outer rim, is similar to flabellum chip architecture, and curved direction is opposite with the rotation direction of rotor.
10. the device of removing isopropanol gas according to claim 9, it is characterised in that: the regular screen net structure
Radially with a thickness of 20~50 mm；Two holes are symmetrically opened along screen net structure central axes, convenient for being fixed with bolt and packing box,
Aperture is 2~10mm；
The unit arcs of the fin structure are made up of silk screen or 10~50 ° of plate sigmoid, and arc length is 30~80
Mm, the spacing between adjacent arcs is 10~40 mm, radially with a thickness of 5~20 mm.
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| CN110339675B (en) | 2022-10-21 |
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