CN117357921B - Refining rectifying device for crude phenol - Google Patents
Refining rectifying device for crude phenol Download PDFInfo
- Publication number
- CN117357921B CN117357921B CN202311674574.2A CN202311674574A CN117357921B CN 117357921 B CN117357921 B CN 117357921B CN 202311674574 A CN202311674574 A CN 202311674574A CN 117357921 B CN117357921 B CN 117357921B
- Authority
- CN
- China
- Prior art keywords
- liquid
- tower
- guide pipe
- rectifying
- arc
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 title claims abstract description 38
- 238000007670 refining Methods 0.000 title claims abstract description 19
- 239000007788 liquid Substances 0.000 claims abstract description 117
- 238000012856 packing Methods 0.000 claims abstract description 64
- 238000010992 reflux Methods 0.000 claims abstract description 10
- 238000009792 diffusion process Methods 0.000 claims description 23
- 238000012546 transfer Methods 0.000 abstract description 19
- 238000012545 processing Methods 0.000 abstract description 12
- 239000000203 mixture Substances 0.000 description 10
- 238000000034 method Methods 0.000 description 9
- QTWJRLJHJPIABL-UHFFFAOYSA-N 2-methylphenol;3-methylphenol;4-methylphenol Chemical compound CC1=CC=C(O)C=C1.CC1=CC=CC(O)=C1.CC1=CC=CC=C1O QTWJRLJHJPIABL-UHFFFAOYSA-N 0.000 description 7
- 229930003836 cresol Natural products 0.000 description 7
- 238000009423 ventilation Methods 0.000 description 6
- 238000002156 mixing Methods 0.000 description 5
- 239000012071 phase Substances 0.000 description 5
- 150000003739 xylenols Chemical class 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- RLSSMJSEOOYNOY-UHFFFAOYSA-N m-cresol Chemical compound CC1=CC=CC(O)=C1 RLSSMJSEOOYNOY-UHFFFAOYSA-N 0.000 description 4
- QWVGKYWNOKOFNN-UHFFFAOYSA-N o-cresol Chemical compound CC1=CC=CC=C1O QWVGKYWNOKOFNN-UHFFFAOYSA-N 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000018044 dehydration Effects 0.000 description 3
- 238000006297 dehydration reaction Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011280 coal tar Substances 0.000 description 2
- 238000001944 continuous distillation Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000000998 batch distillation Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 150000002989 phenols Chemical class 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
Classifications
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C37/00—Preparation of compounds having hydroxy or O-metal groups bound to a carbon atom of a six-membered aromatic ring
- C07C37/68—Purification; separation; Use of additives, e.g. for stabilisation
- C07C37/70—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment
- C07C37/74—Purification; separation; Use of additives, e.g. for stabilisation by physical treatment by distillation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention relates to the technical field of rectifying devices, and provides a rectifying device for refining crude phenol, which comprises a rectifying tower, wherein the rectifying tower is provided with a tower cavity, and the tower cavity is provided with a feed inlet, a liquid reflux port, an air inlet, a tower top air outlet and a tower bottom liquid outlet; the liquid guide pipe is arranged in the tower cavity, the liquid guide pipe is provided with an opening, and two ends of the liquid guide pipe are respectively communicated with the liquid reflux port and the tower bottom liquid outlet; the liquid guide pipe comprises a plurality of upper trays and a plurality of lower trays, wherein the upper trays and the lower trays are alternately arranged on the liquid guide pipe. Through the technical scheme, the problems that the plate type rectifying tower and the packing type rectifying tower in the prior art can not meet the gas-liquid mass transfer requirement required by crude phenol refining, and the processing capacity and the application range of the rectifying tower still need to be improved are solved.
Description
Technical Field
The invention relates to the technical field of rectifying devices, in particular to a rectifying device for refining crude phenol.
Background
Crude phenol is a colorless or white crystal, soluble in water, miscible in ethanol, chloroform, glycerol, ether, etc., which is a phenol-containing fraction obtained by distillation of coal tar and is used for further extraction of phenol, cresol and xylenol.
Refining of crude phenol refers to a process for processing crude phenol by using the boiling point difference of phenol compounds and adopting a rectification method to obtain a phenol product. The method is one of the coal tar distillate processing processes, and the processing procedure comprises crude phenol dehydration, deslagging, rectification and the like, so that a rectification tower is used as chemical equipment, the rectification tower plays a great role in purifying chemical products, the rectification refers to the separation and purification of the mixture by utilizing the difference in volatility among components of a liquid mixture and carrying out mass and heat transfer through an interface when gas-liquid two phases flow step by step and contact, the rectification tower comprises a plate type rectification tower and a packing type rectification tower, the packing type rectification tower is continuous gas-liquid mass transfer equipment, and the gas-liquid two phases are in continuous countercurrent contact form for mass transfer and heat transfer; the gas-liquid two phases in the plate rectifying tower are in layer-by-layer countercurrent contact for mass transfer and heat transfer.
With the diversified development of crude phenol refining, the current use of two types of rectifying towers can not meet the requirement of gas-liquid mass transfer required by crude phenol refining, and the processing capacity and the application range of the rectifying towers still need to be improved.
Disclosure of Invention
The invention provides a rectifying device for refining crude phenol, which solves the problems that a plate type rectifying tower and a packing type rectifying tower in the related art can not meet the gas-liquid mass transfer requirement required by refining crude phenol, and the processing capacity and the application range of the rectifying tower still need to be improved.
The technical scheme of the invention is as follows:
a rectifying device for refining crude phenol comprises:
the rectifying tower is provided with a tower cavity, and the tower cavity is provided with a feed inlet, a liquid reflux port, an air inlet, a tower top air outlet and a tower bottom liquid outlet;
the liquid guide pipe is arranged in the tower cavity, the liquid guide pipe is provided with an opening, and two ends of the liquid guide pipe are respectively communicated with the liquid reflux port and the tower bottom liquid outlet;
the upper trays and the lower trays are alternately arranged on the liquid guide pipe, the upper trays are provided with a first guide surface, the lower trays are provided with a second guide surface, the first guide surface is used for guiding liquid onto the second guide surface, and the second guide surface is used for refluxing the liquid to the opening;
and the first packing element is arranged in the liquid guide pipe.
As a further technical scheme, the air inlet is positioned at the bottom of the rectifying tower, the upper tower plate and the lower tower plate are provided with vent holes, the cross section area of the upper tower plate is smaller than that of the tower cavity, and the maximum cross section area of the lower tower plate is equal to that of the tower cavity.
As a further technical scheme, the upper tray is umbrella-shaped, the lower tray is concave, and the openings are positioned at the top of the upper tray and the bottom of the lower tray.
As a further technical scheme, the air vent is a plurality of, and a plurality of the air vent is arranged along circumference, still includes:
the arc-shaped protruding pieces are arranged on the upper tray, are circumferentially arranged, and are alternately arranged with the vent holes;
and the second packing element is arranged in the vent hole of the upper tray, and the arc-shaped protruding element is used for guiding the liquid into the vent hole after the opening flows out of the liquid.
As a further technical scheme, the cross section of the arc-shaped protruding piece is trapezoid, and the cross section area of the arc-shaped protruding piece gradually increases from being close to being far away from the liquid guide pipe.
As a further technical scheme, the number of the openings is a plurality, the openings are circumferentially arranged, the openings and the vent holes are alternately arranged, and the openings are positioned at one end of the arc-shaped protruding piece.
As a further technical scheme, the method further comprises:
the diffusion pieces are arranged at the edge of the lower tray, the diffusion pieces are arranged along the circumferential direction, the diffusion pieces and the vent holes are alternately arranged, the diffusion pieces are positioned at one end of the vent holes of the upper tray, and the diffusion pieces are used for diffusing the liquid to the second diversion surface.
As a further technical scheme, the diffusion piece is spherical, and the diameter of the diffusion piece is smaller than the maximum width of two adjacent arc-shaped protruding pieces.
As a further technical solution, the lower tray further has a plurality of packing holes, and the plurality of packing holes are circumferentially arranged along the diffuser, and further includes:
and the third packing element is arranged in the packing hole.
As a further technical solution, the first packing element includes:
the fourth packing element and the fifth packing element are arranged in the liquid guide pipe, and the fourth packing element and the fifth packing element are respectively arranged on two sides of the lower column plate.
The working principle and the beneficial effects of the invention are as follows:
in the invention, crude phenol is refined by continuous distillation and intermittent distillation to obtain products such as phenol, o-cresol, m-cresol, xylenol and the like; the crude phenol refining is carried out firstly, the crude phenol from the bottom of the dehydration tower enters a rectifying device from a feed inlet, the crude phenol is divided into two fractions, one is light fraction before cresol, the other is heavy fraction after xylenol, the light fraction is sent into the rectifying device and is fractionated into phenol fraction and cresol fraction, the phenol fraction is condensed from a tower top air outlet through a condenser and flows back into a liquid guide pipe from a liquid reflux port, the cresol fraction is partially evaporated through a tower bottom liquid outlet through a reboiler, the partial evaporation is realized, the liquid mixture is circulated from an air inlet into a tower cavity of the rectifying tower, the rectifying tower is used as chemical equipment, and the separation and purification work of the mixture is completed by carrying out the quality and heat transfer through an interface when the gas phase and the liquid phase are gradually flowed and contacted by utilizing the difference of volatilities of the liquid mixture, but in order to improve the processing capacity of the traditional rectifying tower, a plurality of groups of upper tower plates and lower tower plates are additionally arranged in the rectifying tower to meet the requirements.
The working principle of the rectifying tower is as follows: the rectification units are divided into an upper tray, a lower tray and a first packing element which are arranged from top to bottom along the liquid guide pipe, liquid flowing back from the liquid return port flows onto a first guide surface of the upper tray from the opening, flows onto a second guide surface of the lower tray from the edge of the upper tray under the action of the first guide surface, finally circulates back to the first packing element in the liquid guide pipe from the opening, and gas entering the tower cavity from the gas inlet rises in the process, so that mass transfer and heat transfer can be fully mixed with the liquid on the rectification units, the contact area is increased, the contact time is prolonged, and the treatment capacity of the rectification device is greatly improved.
Drawings
The invention will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic diagram of the inside of a rectifying apparatus for refining crude phenol in the present invention;
FIG. 2 is a schematic diagram of the upper tray structure of the present invention;
FIG. 3 is a schematic view of the lower tray structure of the present invention;
FIG. 4 is a cross-sectional view of an upper tray in accordance with the present invention;
FIG. 5 is a schematic view of a diffuser structure according to the present invention;
FIG. 6 is an enlarged view of portion A of FIG. 4 in accordance with the present invention;
in the figure: 1. rectifying column, 2, tower chamber, 3, feed inlet, 4, liquid return port, 5, air inlet, 6, overhead air outlet, 7, bottom liquid outlet, 8, liquid honeycomb duct, 9, opening, 10, upper column plate, 11, lower column plate, 12, water conservancy diversion face one, 13, water conservancy diversion face two, 14, packing element one, 15, vent, 16, arc protruding piece, 17, packing element two, 18, diffusion piece, 19, filler hole, 20, packing element three, 21, packing element four, 22, packing element five.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1 to 6, this embodiment provides a rectifying device for refining crude phenol, comprising:
a rectifying tower 1, wherein the rectifying tower 1 is provided with a tower cavity 2, and the tower cavity 2 is provided with a feed inlet 3, a liquid reflux inlet 4, an air inlet 5, a tower top air outlet 6 and a tower bottom liquid outlet 7;
the liquid guide pipe 8 is arranged in the tower cavity 2, the liquid guide pipe 8 is provided with an opening 9, and two ends of the liquid guide pipe 8 are respectively communicated with the liquid return port 4 and the tower bottom liquid outlet 7;
the upper trays 10 and the lower trays 11 are alternately arranged on the liquid guide pipe 8, the upper trays 10 are provided with a first diversion surface 12, the lower trays 11 are provided with a second diversion surface 13, the first diversion surface 12 is used for diversion of liquid onto the second diversion surface 13, and the second diversion surface 13 is used for backflow of the liquid to the opening 9;
and a first packing element 14, wherein the first packing element 14 is arranged in the liquid guide pipe 8.
In this example, crude phenol is purified by continuous distillation and batch distillation to obtain phenol, o-cresol, m-cresol, xylenol, etc.; the crude phenol refining is firstly required to be dehydrated, crude phenol coming out from the bottom of the dehydration tower enters a rectifying device from a feed inlet 3 and is divided into two fractions, one is light fraction before cresol, the other is heavy fraction after xylenol, the light fraction is sent into the rectifying device and is fractionated into phenol fraction and cresol fraction, the phenol fraction is condensed from a tower top air outlet 6 through a condenser and flows back into a liquid guide pipe 8 from a liquid reflux port 4, the cresol fraction is partially evaporated through a tower bottom liquid outlet 7 through a reboiler, the partial evaporation is realized, the liquid mixture is recycled into a tower cavity 2 of a rectifying tower 1 from an air inlet 5, the rectifying tower 1 is used as chemical equipment, and the separation and purification work of the mixture is completed by the quality and heat transfer of crossing an interface when the gas phase and the liquid mixture are gradually flowed and contacted, but in order to improve the processing capacity of the traditional rectifying tower 1, a plurality of groups of upper tower plates 10 and lower tower plates 11 are additionally arranged in the rectifying tower 1 to meet the requirements.
The working principle of the rectifying tower 1 is as follows: the upper trays 10, the lower trays 11 and the first packing elements 14 are alternately arranged along the plurality of groups of the liquid guide pipe 8 from top to bottom, the group of the rectifying units is divided into the upper trays 10, the lower trays 11 and the first packing elements 14 which are arranged from top to bottom, liquid flowing back from the liquid return port 4 flows onto the first diversion surface 12 of the upper tray 10 from the opening 9, flows onto the second diversion surface 13 of the lower tray 11 from the edge of the upper tray 10 under the action of the liquid return port, and finally circulates back to the first packing elements 14 in the liquid guide pipe 8 from the opening 9, so that the gas entering the tower cavity 2 from the gas inlet 5 rises in the process, the mass transfer and the heat transfer can be fully mixed with the liquid on the plurality of groups of rectifying units, the contact area is increased, the contact duration is prolonged, and the processing capacity of the rectifying device is greatly improved.
Further, the gas inlet 5 is located at the bottom of the rectifying tower 1, the upper tray 10 and the lower tray 11 are provided with vent holes 15, the cross-sectional area of the upper tray 10 is smaller than the cross-sectional area of the tower cavity 2, and the maximum cross-sectional area of the lower tray 11 is equal to the cross-sectional area of the tower cavity 2.
In the embodiment, the gas inlet 5 at the bottom prolongs the gas-liquid mixing time so as to fully mix the gas-liquid mixing time and the gas-liquid mixing time for mass transfer and heat transfer; in order to facilitate the rising of gas, the gas is prevented from being blocked by a lower tray 11 with the largest cross-sectional area equal to the cross-sectional area of the tower cavity 2, the upper tray 10 is prevented from causing a certain blocking effect, the mixing effect of the gas and the air is improved, the upper tray 10 and the lower tray 11 are provided with vent holes 15, a plurality of vent holes 15 are circumferentially arranged along the umbrella surface of the upper tray 10, and a group of vent holes 15 are axially arranged along the umbrella shaft of the upper tray; in order to facilitate the liquid to flow onto the first diversion surface 12 and the second diversion surface 13, the cross section area of the upper column plate 10 is smaller than that of the column cavity 2.
Further, the upper tray 10 is umbrella-shaped, the lower tray 11 is concave, and the opening 9 is positioned at the top of the upper tray 10 and at the bottom of the lower tray 11.
In the embodiment, the umbrella-shaped upper tray 10 and the concave-shaped lower tray 11 are more beneficial to the flow of liquid, and the gas-liquid mixing time is prolonged, so that the liquid can flow from the upper tray 10 to the lower tray 11 conveniently; the openings 9 are distributed at the top of the upper tray 10 and at the bottom of the lower tray 11 in order that the liquid can be circulated smoothly in a set of rectification units.
Further, the number of the ventilation holes 15 is several, and the number of the ventilation holes 15 is arranged along the circumferential direction, and further includes:
the plurality of arc-shaped protruding pieces 16 are arranged on the upper tray 10, the plurality of arc-shaped protruding pieces 16 are arranged along the circumferential direction, and the arc-shaped protruding pieces 16 and the vent holes 15 are alternately arranged;
and a second packing element 17, wherein the second packing element 17 is arranged in the vent hole 15 of the upper tray 10, and the arc-shaped protruding element 16 is used for guiding the liquid into the vent hole 15 after the opening 9 flows out of the liquid.
In this embodiment, the plurality of circumferentially arranged vent holes 15 and the plurality of circumferentially arranged arc-shaped protruding members 16 on the upper tray 10 are alternately arranged, and the second packing member 17 is further arranged in the vent holes 15, so as to realize that when the liquid flows out from the opening 9 at the top of the upper tray 10, a part of the liquid is further guided to the second packing member 17 in the vent holes 15 under the guiding of the arc-shaped protruding members 16, reacts with the second packing member 17, and the other part of the liquid directly completes the circulation of the first group of rectification units under the action of the first guiding surface 12, thereby improving the processing capacity.
Further, the cross section of the arc-shaped protruding member 16 is trapezoidal, and the cross section of the arc-shaped protruding member 16 gradually increases from the vicinity to the vicinity of the liquid guiding pipe 8.
In this embodiment, the cross section is trapezoidal, and the arc-shaped protruding member 16 with gradually changing cross section is used to smoothly and stably guide a part of the liquid to the second packing member 17 at two sides of the protruding member, so as to react.
Further, the number of the openings 9 is several, the number of the openings 9 is arranged along the circumferential direction, the openings 9 and the ventilation holes 15 are alternately arranged, and the openings 9 are located at one end of the arc-shaped protruding member 16.
In this embodiment, a plurality of circumferentially arranged openings 9 are also alternately arranged with the ventilation holes 15 and located at one end of the arc-shaped protruding member 16, so that the liquid flowing out of the openings 9 can contact with one end of the arc-shaped protruding member 16 as soon as possible, and is split and guided to the second packing members 17 at two sides by the openings, and further reaction occurs.
Further, the method further comprises the following steps:
the diffusion pieces 18 are arranged at the edge of the lower tray 11, the diffusion pieces 18 are arranged circumferentially, the diffusion pieces 18 and the vent holes 15 are alternately arranged, the diffusion pieces 18 are positioned at one end of the vent holes 15 of the upper tray 10, and the diffusion pieces 18 are used for diffusing the liquid onto the second diversion surface 13.
Further, the diffuser 18 is spherical, and the diameter of the diffuser 18 is smaller than the maximum width of two adjacent arcuate projections 16.
In this embodiment, due to the action of the arc-shaped protruding members 16, most of the liquid flowing out of the upper tray 10 is converged between two adjacent arc-shaped protruding members 16, so that the utilization rate of the whole surface of the lower tray 11 is reduced, and mass transfer and heat transfer of a part of gas-liquid mixture are reduced, so that a plurality of diffusion members 18 are circumferentially arranged on the lower tray 11 and are used for diffusing the liquid onto the whole second diversion surface 13, the diffusion members 18 and the ventilation holes 15 are alternately arranged, and the liquid is more rapidly diffused into the ventilation holes 15 on two sides; while the spherical and wide arrangement of the diffuser 18 ensures a stable spreading of the liquid around.
Further, the lower tray 11 further has a plurality of packing holes 19, and the plurality of packing holes 19 are circumferentially arranged along the diffuser 18, and further includes:
and a third packing element 20, wherein the third packing element 20 is arranged in the packing hole 19.
In this embodiment, when the liquid diffuses around the diffusion member 18, the liquid can flow into the surrounding packing holes 19 to complete the reaction with the third packing member 20, thereby further improving the processing capacity of the rectification unit.
Further, the first packing 14 includes:
the packing fourth 21 and the packing fifth 22 are arranged in the liquid guide pipe 8, the packing fourth 21 and the packing fifth 22 are respectively arranged on two sides of the lower tray 11, the packing fourth 21 is located between the upper tray 10 and the lower tray 11 of one group of rectifying units, and the packing fifth 22 is located between the lower tray 11 of one group of rectifying units and the upper tray 10 of the next group of rectifying units.
In this embodiment, the first packing element 14 is composed of two groups of packing elements, the fourth packing element 21 and the fifth packing element 22 are respectively disposed at two sides of the lower tray 11, so that when the liquid passes through a group of rectification units, a part of the liquid can also complete the reaction with the fourth packing element 21 in the liquid guide pipe 8, and meanwhile, the liquid which passes through the upper tray 10 and the lower tray 11 and flows back to the liquid guide pipe 8 can also smoothly react with the fifth packing element 22, so that the processing capacity of the rectification units is further improved.
The foregoing description of the preferred embodiments of the invention is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the invention.
Claims (4)
1. A rectifying apparatus for refining crude phenol, comprising:
the rectifying tower (1), the rectifying tower (1) is provided with a tower cavity (2), and the tower cavity (2) is provided with a feed inlet (3), a liquid reflux port (4), an air inlet (5), a tower top air outlet (6) and a tower bottom liquid outlet (7);
the liquid guide pipe (8), the liquid guide pipe (8) is arranged in the tower cavity (2), the liquid guide pipe (8) is provided with an opening (9), and two ends of the liquid guide pipe (8) are respectively communicated with the liquid reflux port (4) and the tower bottom liquid outlet (7);
the liquid backflow device comprises a plurality of upper trays (10) and a plurality of lower trays (11), wherein the upper trays (10) and the lower trays (11) are alternately arranged on a liquid diversion pipe (8), the upper trays (10) are provided with a first diversion surface (12), the lower trays (11) are provided with a second diversion surface (13), the first diversion surface (12) is used for diversion of liquid onto the second diversion surface (13), and the second diversion surface (13) is used for backflow of the liquid to an opening (9);
a first packing element (14), wherein the first packing element (14) is arranged in the liquid guide pipe (8);
the air inlet (5) is positioned at the bottom of the rectifying tower (1), the upper tray (10) and the lower tray (11) are provided with vent holes (15), the cross section area of the upper tray (10) is smaller than the cross section area of the tower cavity (2), and the maximum cross section area of the lower tray (11) is equal to the cross section area of the tower cavity (2);
the air vent (15) is a plurality of, and a plurality of air vent (15) are arranged along circumference, still includes:
the arc-shaped protruding pieces (16) are arranged on the upper tray (10), the arc-shaped protruding pieces (16) are circumferentially arranged, and the arc-shaped protruding pieces (16) and the vent holes (15) of the upper tray (10) are alternately arranged;
a second packing element (17), wherein the second packing element (17) is arranged in the vent hole (15) of the upper tray (10), and the arc-shaped protruding element (16) is used for guiding the liquid into the vent hole (15) of the upper tray (10) after the opening (9) flows out of the liquid;
the cross section of the arc-shaped protruding piece (16) is trapezoid, and the cross section area of the arc-shaped protruding piece (16) gradually increases from the position close to the position far away from the liquid guide pipe (8);
further comprises:
the diffusion pieces (18) are arranged at the edges of the lower tray (11), the diffusion pieces (18) are arranged along the circumferential direction, the diffusion pieces (18) and the vent holes (15) of the lower tray (11) are alternately arranged, the diffusion pieces (18) are positioned at one end of the vent holes (15) of the upper tray (10), and the diffusion pieces (18) are used for diffusing the liquid onto the second diversion surface (13);
the diffusion piece (18) is spherical, and the diameter of the diffusion piece (18) is smaller than the maximum width of two adjacent arc-shaped protruding pieces (16);
the number of the openings (9) is several, the openings (9) are arranged along the circumferential direction, the openings (9) and the vent holes (15) are alternately arranged, and the openings (9) are positioned at one end of the arc-shaped protruding piece (16).
2. The rectifying device for refining crude phenol according to claim 1, wherein said upper tray (10) is umbrella-shaped, said lower tray (11) is concave, and said openings (9) are located at the top of said upper tray (10) and at the bottom of said lower tray (11).
3. The rectifying device for refining crude phenol according to claim 1, characterized in that said lower tray (11) further has a plurality of packing holes (19), and that said plurality of packing holes (19) are circumferentially arranged along said diffuser (18), further comprising:
and a third packing element (20), wherein the third packing element (20) is arranged in the packing hole (19).
4. The rectifying device for refining crude phenol according to claim 1, wherein said packing member one (14) comprises:
the liquid guide pipe comprises a lower tray (11), a filling piece IV (21) and a filling piece V (22), wherein the filling piece IV (21) and the filling piece V (22) are arranged in the liquid guide pipe (8), and the filling piece IV (21) and the filling piece V (22) are respectively arranged on two sides of the lower tray (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311674574.2A CN117357921B (en) | 2023-12-08 | 2023-12-08 | Refining rectifying device for crude phenol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311674574.2A CN117357921B (en) | 2023-12-08 | 2023-12-08 | Refining rectifying device for crude phenol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117357921A CN117357921A (en) | 2024-01-09 |
| CN117357921B true CN117357921B (en) | 2024-03-08 |
Family
ID=89398796
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311674574.2A Active CN117357921B (en) | 2023-12-08 | 2023-12-08 | Refining rectifying device for crude phenol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117357921B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5653126A (en) * | 1994-09-19 | 1997-08-05 | Hitachi, Ltd. | Packing material and air separator |
| CN201505507U (en) * | 2009-06-11 | 2010-06-16 | 贵阳铝镁设计研究院 | Tower plate of red mud desulfurizing tower |
| CN104667554A (en) * | 2015-02-13 | 2015-06-03 | 济南骄泰信息技术有限公司 | Multifunction efficient rectifying column |
| CN106390503A (en) * | 2016-11-17 | 2017-02-15 | 晓健科技（大连）有限公司 | Plate type packed distillation tower |
| CN208943513U (en) * | 2018-10-25 | 2019-06-07 | 乳山市日晟机械制造有限公司 | Combined high-efficiency inclined hole packed tower for fusel oil separating-purifying |
| CN219721950U (en) * | 2023-05-12 | 2023-09-22 | 中立(天津)机械科技有限公司 | Rectifying column of combined liquid distributor |
-
2023
- 2023-12-08 CN CN202311674574.2A patent/CN117357921B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5653126A (en) * | 1994-09-19 | 1997-08-05 | Hitachi, Ltd. | Packing material and air separator |
| CN201505507U (en) * | 2009-06-11 | 2010-06-16 | 贵阳铝镁设计研究院 | Tower plate of red mud desulfurizing tower |
| CN104667554A (en) * | 2015-02-13 | 2015-06-03 | 济南骄泰信息技术有限公司 | Multifunction efficient rectifying column |
| CN106390503A (en) * | 2016-11-17 | 2017-02-15 | 晓健科技（大连）有限公司 | Plate type packed distillation tower |
| CN208943513U (en) * | 2018-10-25 | 2019-06-07 | 乳山市日晟机械制造有限公司 | Combined high-efficiency inclined hole packed tower for fusel oil separating-purifying |
| CN219721950U (en) * | 2023-05-12 | 2023-09-22 | 中立(天津)机械科技有限公司 | Rectifying column of combined liquid distributor |
Non-Patent Citations (1)
| Title |
|---|
| 兰州石油机械研究所.现代塔器技术.烃加工出版社,1990,827-828. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117357921A (en) | 2024-01-09 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US7045103B2 (en) | Multiphase mixing device with baffles | |
| US7601310B2 (en) | Distributor system for downflow reactors | |
| US9211516B2 (en) | Fluid distribution device for multibed reactors | |
| US7052654B2 (en) | Multiphase mixing device with staged gas introduction | |
| US6386520B2 (en) | Fluid inlet device | |
| RU2011109236A (en) | CROSS COLUMN PLATE AND METHOD OF ITS APPLICATION | |
| CA3071252C (en) | Methods and apparatus for fluid contacting in a downflow vessel | |
| US3232590A (en) | Treating tower having a plate for collecting, mixing and distributing liquid | |
| CN117357921B (en) | Refining rectifying device for crude phenol | |
| CA2756043C (en) | Improved fluid distribution to parallel flow vapor-liquid contacting trays | |
| KR101120085B1 (en) | Combined liquid collector and mixer for mass transfer column | |
| CN111050900B (en) | Method and apparatus for fluid contact in a downflow vessel | |
| CN112439225B (en) | Gas/liquid separation column comprising a distribution device | |
| US2005316A (en) | Apparatus for fractionating hydrocarbon oil vapor | |
| US2682394A (en) | Spray grid tray column with fluid distribution or drawoff tray | |
| US10828616B2 (en) | Methods and apparatus for fluid contacting in a downflow vessel | |
| EP3658267B1 (en) | Methods for fluid contacting in a downflow vessel | |
| CN1059200A (en) | Jet condenser | |
| CN115645951A (en) | Alcohol differential pressure distillation production system | |
| CN213032459U (en) | Fluted disc type liquid collector for packed tower | |
| CN2676997Y (en) | Inclined hole tower tray used for ammonia evaporation tower | |
| CN208406135U (en) | A kind of fractionating column | |
| RU201962U1 (en) | Column for contacting gas with liquid | |
| RU2759813C2 (en) | Mixing and distributing device with longitudinal hole | |
| CN212548403U (en) | Dividing wall type continuous extraction tower |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |