CN215900981U - Alkyl anthraquinone continuous extraction washing device - Google Patents
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Abstract
The utility model provides an alkyl anthraquinone continuous extraction water washing device, and belongs to the technical field of chemical equipment. The device includes: the system comprises a mixer, an acid separation extraction tower, a first buffer tank, an alkaline washing tower, a second buffer tank, a water washing tower, a first delivery pump and a second delivery pump; the mixer is used for uniformly mixing pure water and alkyl anthraquinone sulfuric acid reaction liquid, the upper part of the acid separation extraction tower is communicated with the liquid outlet of the mixer, the first buffer tank is communicated with the top of the acid separation extraction tower, the lower part of the alkaline tower is communicated with the first buffer tank through the first conveying pump, the second buffer tank is communicated with the top of the alkaline tower, and the bottom of the water washing tower is communicated with the second buffer tank through the second conveying pump. The utility model is applied to the aspect of the extraction and water washing device of the alkylanthraquinone, and can solve the technical problems of long time consumption, limited treatment scale and the like in the prior art.
Description
Technical Field
The utility model belongs to the technical field of chemical equipment, and particularly relates to an alkyl anthraquinone continuous extraction and washing device.
Background
The alkyl anthraquinone is an important organic synthesis intermediate, and is widely applied to the fields of hydrogen peroxide, dyes, pigments, photosensitizers and the like. At present, the domestic process for producing the alkylanthraquinone mostly adopts a phthalic anhydride method, namely, phthalic anhydride and alkylbenzene are subjected to a Friedel-crafts reaction to produce 2- (4-alkylbenzoyl) benzoic acid (BE acid), the BE acid is subjected to intramolecular dehydration ring-closing reaction under the catalysis of sulfuric acid to generate the alkylanthraquinone, wherein, the second dehydration ring-closing reaction requires a strong acid environment, the sulfuric acid is generally used as a solvent to bring difficulties for separation and purification, the domestic general kettle type treatment method is adopted, namely, the alkylanthraquinone sulfuric acid reaction solution is added into a stirring kettle, water and toluene are added, extraction and stirring are carried out, static layering are carried out, the lower layer is dilute sulfuric acid, the upper layer is an alkylanthraquinone toluene solution, the lower layer is discharged, liquid alkali is added into the kettle to neutralize residual sulfuric acid, stirring layering is carried out, the liquid alkali at the lower layer is discharged, pure water is added, the water phase at the lower layer is discharged, the alkylanthraquinone toluene solution at the upper layer is removed from a subsequent solvent removal working section, the kettle type treatment method is intermittent operation and has the defects of long material treatment time, limited treatment scale, incapability of large-scale production and the like.
Therefore, how to develop an efficient and continuously operable extraction water washing device for producing alkylanthraquinone is the key to solve the above problems.
SUMMERY OF THE UTILITY MODEL
The utility model provides a continuous extraction and water washing device for alkylanthraquinone, which has high treatment effect and can be operated continuously, aiming at the technical problems of long time consumption, limited treatment scale and the like in the prior art.
In order to achieve the purpose, the utility model adopts the technical scheme that:
an alkylanthraquinone continuous extraction water washing device, comprising: the system comprises a mixer, an acid separation extraction tower, a first buffer tank, an alkaline washing tower, a second buffer tank, a water washing tower, a first delivery pump and a second delivery pump;
the mixer is used for uniformly mixing pure water and alkyl anthraquinone sulfuric acid reaction liquid, the upper part of the acid separation extraction tower is communicated with the liquid outlet of the mixer, the first buffer tank is communicated with the top of the acid separation extraction tower, the lower part of the alkaline tower is communicated with the first buffer tank through the first conveying pump, the second buffer tank is communicated with the top of the alkaline tower, and the bottom of the water washing tower is communicated with the second buffer tank through the second conveying pump.
Preferably, the mixer comprises: the mixer comprises a mixer internal part and an outer jacket sleeved on the outer side of the mixer internal part.
Preferably, the material of the mixer internal part is one or more of polypropylene, polyvinyl chloride, polytetrafluoroethylene and glass fiber reinforced plastic, the type is one or more of SV, SK, SX, SL and SH, and the mass ratio of pure water to the reaction liquid of the alkyl anthraquinone sulfuric acid in the mixer is (1-2): 1.
Preferably, the left end and the right end of the mixer are respectively provided with an alkyl anthraquinone sulfuric acid reaction liquid inlet and an alkyl anthraquinone sulfuric acid reaction liquid outlet, the top of the mixer is provided with a pure water inlet and a circulating water inlet, and the bottom of the mixer is provided with a circulating water outlet.
Preferably, the acid separation extraction tower is divided into three layers from top to bottom, namely a first organic phase layer, a first packing layer and a dilute sulfuric acid phase layer in sequence;
the alkaline washing tower is divided into three layers from top to bottom, namely a second organic phase layer, a second filler layer and a liquid caustic soda phase layer in sequence;
the washing tower is divided into three layers from top to bottom, and the three layers are a third organic phase layer, a third packing layer and a water phase layer in sequence.
Preferably, the height of the first organic phase layer is 1/5-1/4 of the total height of the acid-out extraction tower, the height of the first packing layer is 1/2-3/5 of the total height of the acid-out extraction tower, the height of the dilute sulfuric acid phase layer is 1/5-1/4 of the total height of the acid-out extraction tower, and the tower diameters of the first organic phase layer and the dilute sulfuric acid phase layer are both 1.2-1.6 times of the tower diameter of the first packing layer and are both connected with the first packing layer through necking;
the height of the second organic phase layer is 1/5-1/4 of the total height of the alkaline washing tower, the height of the second filler layer is 1/2-3/5 of the total height of the alkaline washing tower, the height of the liquid alkaline phase layer is 1/5-1/4 of the total height of the alkaline washing tower, and the tower diameters of the second organic phase layer and the liquid alkaline phase layer are 1.2-1.6 times of the tower diameter of the second filler layer and are connected with the second filler layer through necking;
the height of the third organic phase layer is 1/5-1/4 of the total height of the washing tower, the height of the third packing layer is 1/2-3/5 of the total height of the washing tower, the height of the water phase layer is 1/5-1/4 of the total height of the washing tower, and the tower diameters of the third organic phase layer and the water phase layer are 1.2-1.6 times of the tower diameter of the third packing layer and are connected with the third packing layer through necking.
Preferably, the first packing layer, the second packing layer and the third packing layer are respectively in any one or more of Raschig rings, pall rings, step rings and intalox saddles, and the material of the packing is any one or more of polypropylene, polyvinyl chloride, polytetrafluoroethylene and glass fiber reinforced plastics.
Preferably, the pressure controller and the level gauge are arranged on the top of each of the acid-out extraction tower, the alkaline washing tower and the water washing tower.
Preferably, a toluene liquid inlet is formed in the outer side of the necking of the dilute sulfuric acid phase layer, and a dilute sulfuric acid liquid outlet is formed in the bottom of the necking;
an alkali liquor inlet is formed in the outer side of the necking of the second organic phase layer, and a liquid alkali liquor outlet is formed in the bottom of the liquid alkali phase layer;
and a pure water inlet is formed outside the necking of the third organic phase layer, and a water outlet is formed at the bottom of the water phase layer.
Preferably, the first buffer tank and the second buffer tank are both horizontal buffer tanks, a liquid collecting bag is arranged at the bottom of each horizontal buffer tank, the diameter of the liquid collecting bag is 1/5-1/3 of the diameter of a cylinder of each buffer tank, the height of the liquid collecting bag is 1/5-1/3 of the height of the cylinder of each buffer tank, and a boundary gauge is further installed on the liquid collecting bag.
Compared with the prior art, the utility model has the advantages and positive effects that:
1. the utility model provides an alkyl anthraquinone continuous extraction water washing device, which finally realizes continuous operation of three sections of acid precipitation extraction, alkali washing and water washing by arranging a continuous mixer, three packed towers and accessory equipment thereof, and has the advantages of large load, large operation elasticity and high working efficiency;
2. the utility model provides an alkyl anthraquinone continuous extraction washing device, wherein a packed tower arranged in the device has large mass transfer area and is operated under pressure, so that the extraction washing efficiency can be further improved;
3. the utility model provides a continuous extraction and washing device for alkyl anthraquinone, wherein a buffer tank of the device is also provided with a liquid collecting bag, so that dilute sulfuric acid or alkali liquor carried by an organic phase can be further separated.
Drawings
FIG. 1 is a schematic structural diagram of an apparatus for continuous extraction and water washing of alkylanthraquinone according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a mixer in an apparatus for continuous extraction and water washing of alkylanthraquinone according to an embodiment of the present invention.
In the above figures: 1. a mixer; 1-1, a liquid inlet of an alkyl anthraquinone sulfuric acid reaction liquid; 1-2, a liquid outlet; 1-3, a pure water inlet; 1-4, a circulating water inlet; 1-5, a circulating water outlet; 1-6, internal parts of a mixer; 1-7, an outer jacket; 2. an acid-out extraction tower; 2-1, a first organic phase layer; 2-2, a first filler layer; 2-3, dilute sulphuric acid phase layer; 2-4, a toluene liquid inlet; 2-5, a dilute sulfuric acid liquid outlet; 3. a first buffer tank; 4. an alkaline washing tower; 4-1, a second organic phase layer; 4-2, a second filler layer; 4-3, liquid alkali phase layer; 4-4, an alkali liquor inlet; 4-5, a liquid alkali outlet; 5. a second buffer tank; 6. washing the tower with water; 6-1, a third organic phase layer; 6-2, a third packing layer; 6-3, water phase layer; 6-4, a pure water inlet; 6-5, a water outlet; 7. a first delivery pump; 8. a second delivery pump; 3-1, 5-1 and a liquid collecting bag.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
FIG. 1 shows a continuous extraction and water washing device for alkylanthraquinone, which comprises: the system comprises a mixer 1, an acid separation extraction tower 2, a first buffer tank 3, an alkaline washing tower 4, a second buffer tank 5, a water washing tower 6, a first delivery pump 7 and a second delivery pump 8;
wherein, blender 1 is used for mixing pure water and alkyl anthraquinone sulphuric acid reaction liquid, the upper portion of acid-out extraction tower 2 with the liquid outlet 1-2 intercommunication of blender 1, first buffer tank 3 with the top intercommunication of acid-out extraction tower 2, the lower part of caustic wash tower 4 is passed through first delivery pump 7 and is communicated with first buffer tank 3, second buffer tank 5 with the top intercommunication of caustic wash tower 4, the bottom of scrubbing tower 6 is passed through second delivery pump 8 and second buffer tank 5 intercommunication.
In the above-mentioned alkylanthraquinone continuous extraction water washing apparatus, the mixer 1 further comprises: the mixer comprises mixer internal parts 1-6 and outer jackets 1-7 sleeved outside the mixer internal parts 1-6, wherein the mixer internal parts 1-6 mainly play roles of cutting, shunting, mixing and the like on fluid, so that the fluid quickly reaches a turbulent flow state, the mixing efficiency of sulfuric acid and water is improved, meanwhile, the pressure drop loss is small, the material of the mixer internal parts 1-6 is any one or more of polypropylene, polyvinyl chloride, polytetrafluoroethylene and glass fiber reinforced plastic, the type is any one or more of SV, SK, SX, SL and SH, refrigerants are introduced into the outer jackets 1-7, such as chilled water, circulating water and the like, and the material of the outer jackets 1-7 is any one of carbon steel and stainless steel; in addition, the mass ratio of the pure water to the reaction solution of the alkylanthraquinone sulfuric acid in the mixer 1 is (1-2): 1.
Further, a plurality of openings are also provided on the mixer 1, specifically: the left end and the right end of the mixer 1 are respectively provided with an alkyl anthraquinone sulfuric acid reaction liquid inlet 1-1 and a liquid outlet 1-2, the top is provided with a pure water inlet 1-3 and a circulating water inlet 1-4, and the bottom is provided with a circulating water outlet 1-5.
In the alkyl anthraquinone continuous extraction water washing device, the acid-out extraction tower 2, the alkaline washing tower 4 and the water washing tower 6 are all devices which are divided into three subunits from top to bottom, wherein the three subunits are specifically made of any one of glass fiber reinforced plastics, glass lining and steel lining polytetrafluoroethylene, and specifically, the acid-out extraction tower 2 is divided into three subunits from top to bottom, namely a first organic phase layer 2-1, a first packing layer 2-2 and a dilute sulfuric acid phase layer 2-3 in sequence;
the alkaline tower 4 is divided into three layers from top to bottom, namely a second organic phase layer 4-1, a second filler layer 4-2 and a liquid caustic soda phase layer 4-3 in sequence;
the water washing tower 6 is divided into three layers from top to bottom, namely a third organic phase layer 6-1, a third packing layer 6-2 and a water phase layer 6-3 in sequence.
Furthermore, in order to enable the working efficiency of the continuous extraction and water washing device for alkylanthraquinone provided by the embodiment of the present invention to reach an ideal state, the heights and the diameters of the subunits in the acid separation extraction tower 2, the caustic wash tower 4 and the water washing tower 6 are further defined, specifically, the height of the first organic phase layer 2-1 is 1/5-1/4 of the total height of the acid separation extraction tower 2, the height of the first filler layer 2-2 is 1/2-3/5 of the total height of the acid separation extraction tower 2, the height of the dilute sulfuric acid phase layer 2-3 is 1/5-1/4 of the total height of the acid separation extraction tower 2, the diameters of the first organic phase layer 2-1 and the dilute sulfuric acid phase layer 2-3 are both 1.2-1.6 times of the diameter of the first filler layer 2-2, and are both connected with the first filler layer 2-2 through necking, in the acid extraction column 2, the reason why the column diameters of the first organic phase layer 2-1 and the dilute sulfuric acid phase layer 2-3 are larger than the column diameter of the first packing layer 2-2 is that: the tower diameter is enlarged to reduce the flow velocity to a certain extent, and enough residence time is ensured, so that the dispersed liquid phase is condensed again, and the two-phase separation is realized;
the height of the second organic phase layer 4-1 is 1/5-1/4 of the total height of the alkaline washing tower 4, the height of the second packing layer 4-2 is 1/2-3/5 of the total height of the alkaline washing tower 4, the height of the liquid caustic phase layer 4-3 is 1/5-1/4 of the total height of the alkaline washing tower 4, the tower diameters of the second organic phase layer 4-1 and the liquid caustic phase layer 4-3 are 1.2-1.6 times of the tower diameter of the second packing layer 4-2, and are connected with the second packing layer 4-2 through necking, and the reason that the tower diameters of the second organic phase layer 4-1 and the liquid caustic phase layer 4-3 in the alkaline washing tower 4 are larger than the tower diameter of the second packing layer 4-2 is that: the tower diameter is enlarged to reduce the flow velocity to a certain extent, and enough residence time is ensured, so that the dispersed liquid phase is condensed again, and the two-phase separation is realized;
the height of the third organic phase layer 6-1 is 1/5-1/4 of the total height of the water washing tower 6, the height of the third packing layer 6-2 is 1/2-3/5 of the total height of the water washing tower 6, the height of the water phase layer 6-3 is 1/5-1/4 of the total height of the water washing tower 6, the tower diameters of the third organic phase layer 6-1 and the water phase layer 6-3 are 1.2-1.6 times of the tower diameter of the third packing layer 6-2 and are connected with the third packing layer 6-2 through necking, in the water washing tower 6, the reason that the tower diameter of the third organic phase layer 6-1 and the water phase layer 6-3 is larger than that of the third packing layer 6-2 is also to reduce the flow velocity to a certain extent and ensure sufficient residence time to re-agglomerate the dispersed liquid phase and realize the two-phase separation.
In addition, in the continuous extraction and water washing device for the alkylanthraquinone, the filler layer is a main component of each working tower, and the purpose is to provide enough theoretical plate number and mass transfer area and increase the contact area of the phase, so that the mass transfer is strengthened.
Furthermore, the first packing layer 2-2, the second packing layer 4-2 and the third packing layer 6-2 are all in the form of one or more of raschig rings, pall rings, ladder rings and intalox saddles, and the packing material is one or more of polypropylene, polyvinyl chloride, polytetrafluoroethylene and glass fiber reinforced plastic.
It should be further explained that the tops of the acid separation extraction tower 2, the alkaline washing tower 4 and the water washing tower 6 in the alkylanthraquinone continuous extraction water washing device provided by the embodiment of the present invention are all provided with a pressure controller and a level meter to ensure that the operating pressures at the tops of the three working towers are maintained at 0.1 to 0.2MPaG, wherein the axial back mixing can be reduced by the operation of the three working towers with pressure, the two phases are fully contacted, and the retention time is uniform.
In the above continuous extraction and washing device for alkylanthraquinone, each subunit of the acid separation extraction tower 2, the alkaline washing tower 4 and the water washing tower 6 is further provided with a plurality of openings, specifically: a toluene liquid inlet 2-4 is arranged on the outer side of the necking of the dilute sulfuric acid phase layer 2-3, and a dilute sulfuric acid liquid outlet 2-5 is arranged at the bottom;
an alkali liquor inlet 4-4 is formed in the outer side of the constriction of the second organic phase layer 4-1, and a liquid alkali liquor outlet 4-5 is formed in the bottom of the liquid alkali phase layer 4-3;
a pure water inlet 6-4 is arranged on the outer side of the necking of the third organic phase layer 6-1, and a water outlet 6-5 is arranged at the bottom of the aqueous phase layer 6-3.
In addition, the first buffer tank 3 and the second buffer tank 5 adopted in the alkyl anthraquinone continuous extraction and washing device are both horizontal buffer tanks, collecting bags 3-1 and 5-1 are arranged at the bottoms of the horizontal buffer tanks, the diameters of the collecting bags 3-1 and 5-1 are 1/5-1/3 of the diameter of the cylinder of the buffer tank, the heights of the collecting bags are 1/5-1/3 of the height of the cylinder of the buffer tank, and a boundary gauge is further arranged on the collecting bags 3-1 and 5-1, wherein the reason for limiting the diameters and the heights of the collecting bags 3-1 and 5-1 to the ranges is that: the standing time of the materials can be prolonged, so that the carried dilute sulfuric acid or alkali liquor is converged into larger liquid drops, and the liquid drops enter the bottom of the liquid collecting bag after being settled to be layered with an organic phase, thereby further improving the separation efficiency and reducing the downstream operation load.
The utility model also provides a using method of the alkyl anthraquinone continuous extraction water washing device, which comprises the following specific steps:
(1) respectively adding the reaction solution of the alkyl anthraquinone sulfuric acid and pure water into a mixer 1 through an alkyl anthraquinone sulfuric acid reaction solution inlet 1-1 and a pure water inlet 1-3, wherein the mass ratio of the pure water to the reaction solution of the alkyl anthraquinone sulfuric acid is (1-2) to 1, uniformly mixing the two solutions to obtain an alkyl anthraquinone sulfuric acid mixed solution, and then feeding the mixed solution into the upper part of an acid precipitation extraction tower 2 through a liquid outlet 1-2;
(2) toluene is added into the acid precipitation extraction tower 2 through a toluene liquid inlet 2-4, and the ratio of the feeding flow rate of the mixed solution of the alkyl anthraquinone and the sulfuric acid to the flow rate of the toluene is 1: (0.5-5), mass transfer is carried out on the first packing layer 2-2, the alkylanthraquinone enters a toluene phase (namely the first organic phase layer 2-1) to obtain an alkylanthraquinone toluene solution, the alkylanthraquinone toluene solution is discharged from the top of the acid-out extraction tower 2 and then enters the first buffer tank 3, and dilute sulfuric acid is discharged from a dilute sulfuric acid liquid outlet 2-5 at the bottom of the acid-out extraction tower 2;
(3) after the alkyl anthraquinone toluene solution is pressurized by a first delivery pump 7 and enters the lower part of an alkaline tower 4, liquid caustic soda is added into the alkaline tower 4 through an alkaline liquor inlet 4-4, and the flow ratio of the alkyl anthraquinone toluene solution to the liquid caustic soda is 1: (0.5-5), mass transfer is carried out on the second packing layer 4-2, so that residual sulfuric acid is neutralized by alkali liquor, waste alkali liquor is discharged from an alkali liquor outlet (4-5) arranged at the bottom of the alkali washing tower 4, and the obtained alkyltoluene solution is discharged from the top of the alkali washing tower 4 and then enters a second buffer tank 5;
(4) and pressurizing the alkyl anthraquinone toluene solution by a second delivery pump 8, then feeding the pressurized alkyl anthraquinone toluene solution into the lower part of a water washing tower 6, and adding pure water into the water washing tower 6 through a pure water inlet 6-4, wherein the flow ratio of the alkyl anthraquinone toluene solution to the pure water is 1: (0.5-5), and mass transfer is carried out on the third packing layer 6-2, so that residual alkali liquor enters the water phase layer 6-3 and is discharged through a water outlet 6-5 arranged at the bottom of the water washing tower 6, and the alkyl anthraquinone toluene solution is discharged from the top of the tower and enters a subsequent solvent removal working section.
Claims (10)
1. An alkyl anthraquinone continuous extraction water washing device is characterized by comprising: the device comprises a mixer (1), an acid-out extraction tower (2), a first buffer tank (3), an alkaline washing tower (4), a second buffer tank (5), a water washing tower (6), a first conveying pump (7) and a second conveying pump (8);
wherein, blender (1) is used for mixing pure water and alkyl anthraquinone sulphuric acid reaction liquid, the upper portion of acid out extraction tower (2) with liquid outlet (1-2) intercommunication of blender (1), first buffer tank (3) with the top intercommunication of acid out extraction tower (2), the lower part of alkaline washing tower (4) is through first delivery pump (7) and first buffer tank (3) intercommunication, second buffer tank (5) with the top intercommunication of alkaline washing tower (4), the bottom of water scrubber (6) is through second delivery pump (8) and second buffer tank (5) intercommunication.
2. The alkylanthraquinone continuous extraction water washing apparatus as claimed in claim 1, wherein said mixer (1) comprises: the mixer comprises a mixer internal part (1-6) and an outer jacket (1-7) sleeved outside the mixer internal part (1-6).
3. The alkylanthraquinone continuous extraction water washing device according to claim 2, wherein the material of the mixer internals (1-6) is any one of polypropylene, polyvinyl chloride, polytetrafluoroethylene and glass fiber reinforced plastics, and the type is any one of SV, SK, SX, SL and SH.
4. The continuous extraction and water washing device for alkyl anthraquinone according to claim 2, wherein the left and right ends of the mixer (1) are respectively provided with an alkyl anthraquinone sulfuric acid reaction liquid inlet (1-1) and an alkyl anthraquinone sulfuric acid reaction liquid outlet (1-2), the top of the mixer is provided with a pure water inlet (1-3) and a circulating water inlet (1-4), and the bottom of the mixer is provided with a circulating water outlet (1-5).
5. The alkylanthraquinone continuous extraction water washing device according to claim 1, wherein the acid-out extraction tower (2) is divided into three layers from top to bottom, a first organic phase layer (2-1), a first packing layer (2-2) and a dilute sulfuric acid phase layer (2-3) in sequence;
the alkaline tower (4) is divided into three layers from top to bottom, and the three layers are a second organic phase layer (4-1), a second filler layer (4-2) and a liquid caustic soda phase layer (4-3) in sequence; the water washing tower (6) is divided into three layers from top to bottom, and the three layers are a third organic phase layer (6-1), a third packing layer (6-2) and a water phase layer (6-3) in sequence.
6. The alkylanthraquinone continuous extraction water washing device according to claim 5, wherein the height of the first organic phase layer (2-1) is 1/5-1/4 of the total height of the acid separation extraction tower (2), the height of the first filler layer (2-2) is 1/2-3/5 of the total height of the acid separation extraction tower (2), the height of the dilute sulfuric acid phase layer (2-3) is 1/5-1/4 of the total height of the acid separation extraction tower (2), the tower diameters of the first organic phase layer (2-1) and the dilute sulfuric acid phase layer (2-3) are 1.2-1.6 times of the tower diameter of the first filler layer (2-2), and both are connected with the first filler layer (2-2) through necking;
the height of the second organic phase layer (4-1) is 1/5-1/4 of the total height of the alkaline washing tower (4), the height of the second packing layer (4-2) is 1/2-3/5 of the total height of the alkaline washing tower (4), the height of the liquid alkali phase layer (4-3) is 1/5-1/4 of the total height of the alkaline washing tower (4), the tower diameters of the second organic phase layer (4-1) and the liquid alkali phase layer (4-3) are 1.2-1.6 times of the tower diameter of the second packing layer (4-2), and the second organic phase layer (4-1) and the liquid alkali phase layer are connected with the second packing layer (4-2) through necking;
the height of the third organic phase layer (6-1) is 1/5-1/4 of the total height of the water washing tower (6), the height of the third packing layer (6-2) is 1/2-3/5 of the total height of the water washing tower (6), the height of the water phase layer (6-3) is 1/5-1/4 of the total height of the water washing tower (6), the tower diameters of the third organic phase layer (6-1) and the water phase layer (6-3) are 1.2-1.6 times of the tower diameter of the third packing layer (6-2), and the third organic phase layer (6-1) and the water phase layer (6-3) are connected with the third packing layer (6-2) through necking.
7. The alkylanthraquinone continuous extraction water washing device according to claim 5, wherein the first packing layer (2-2), the second packing layer (4-2) and the third packing layer (6-2) are all of Raschig rings, pall rings, ladder rings and intalox saddles in packing type, and the packing material is any one of polypropylene, polyvinyl chloride, polytetrafluoroethylene and glass fiber reinforced plastic.
8. The alkylanthraquinone continuous extraction water washing device according to claim 1, wherein a pressure controller and a level gauge are arranged at the top of each of the acid-out extraction tower (2), the alkaline washing tower (4) and the water washing tower (6).
9. The alkylanthraquinone continuous extraction water washing device according to claim 5, wherein a toluene liquid inlet (2-4) is arranged at the outer side of the neck of the dilute sulfuric acid phase layer (2-3), and a dilute sulfuric acid liquid outlet (2-5) is arranged at the bottom;
an alkali liquor inlet (4-4) is formed in the outer side of the constriction of the second organic phase layer (4-1), and a liquid alkali liquor outlet (4-5) is formed in the bottom of the liquid alkali phase layer (4-3);
a pure water inlet (6-4) is arranged on the outer side of the necking of the third organic phase layer (6-1), and a water outlet (6-5) is arranged at the bottom of the water phase layer (6-3).
10. The alkylanthraquinone continuous extraction water washing device according to claim 1, wherein the first buffer tank (3) and the second buffer tank (5) are both horizontal buffer tanks, and the bottoms of the buffer tanks are provided with collecting bags (3-1, 5-1), the diameters of the collecting bags (3-1, 5-1) are 1/5-1/3 of the diameter of the cylinder of the buffer tank, the heights of the collecting bags are 1/5-1/3 of the height of the cylinder of the buffer tank, and the collecting bags (3-1, 5-1) are further provided with level gauges.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120021094.6U CN215900981U (en) | 2021-01-06 | 2021-01-06 | Alkyl anthraquinone continuous extraction washing device |
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| CN202120021094.6U CN215900981U (en) | 2021-01-06 | 2021-01-06 | Alkyl anthraquinone continuous extraction washing device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228137A (en) * | 2022-08-17 | 2022-10-25 | 明士新材料有限公司 | Modularized continuous extraction separation method |
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2021
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115228137A (en) * | 2022-08-17 | 2022-10-25 | 明士新材料有限公司 | Modularized continuous extraction separation method |
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