CN113877236A - Auxiliary device for producing paraxylene - Google Patents
Auxiliary device for producing paraxylene Download PDFInfo
- Publication number
- CN113877236A CN113877236A CN202111495400.0A CN202111495400A CN113877236A CN 113877236 A CN113877236 A CN 113877236A CN 202111495400 A CN202111495400 A CN 202111495400A CN 113877236 A CN113877236 A CN 113877236A
- Authority
- CN
- China
- Prior art keywords
- fixedly connected
- communicated
- crystallization
- crystallization cylinder
- pipe
- 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.)
- Granted
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0004—Crystallisation cooling by heat exchange
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D3/00—Distillation or related exchange processes in which liquids are contacted with gaseous media, e.g. stripping
- B01D3/42—Regulation; Control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D33/00—Filters with filtering elements which move during the filtering operation
- B01D33/01—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons
- B01D33/015—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with flat filtering elements
- B01D33/0158—Filters with filtering elements which move during the filtering operation with translationally moving filtering elements, e.g. pistons with flat filtering elements self-supporting
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/0063—Control or regulation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D2009/0086—Processes or apparatus therefor
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Crystallography & Structural Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention discloses an auxiliary device for producing paraxylene, and relates to the technical field of chemical equipment. The crystallization device comprises a crystallization mechanism, wherein the crystallization mechanism comprises a crystallization cylinder, the top of the crystallization cylinder is rotatably connected with a sealing upper cover, and one side of the top of the sealing upper cover is fixedly connected with a feeding pipe communicated with the interior of the crystallization cylinder; one side of the outside of the crystallization cylinder is fixedly connected with a cold air input mechanism communicated with the inside of the crystallization cylinder, the bottom of the crystallization cylinder is fixedly connected with a conveying mechanism communicated with the inside of the crystallization cylinder, and one end of the conveying mechanism is fixedly connected with a purification mechanism communicated with the conveying mechanism; the purification mechanism includes a distillation tank. According to the invention, the soluble salt solution is added into the distillation tank from the material injection pipe, so that the reacted mixed xylene solution can enter the crystallization pipe again in a distillation mode for further crystallization and purification, the purification rate of the paraxylene is improved by a simple mechanical device, and the yield of the paraxylene is increased.
Description
Technical Field
The invention relates to the technical field of chemical equipment, in particular to an auxiliary device for producing paraxylene.
Background
Para-xylene is an important feedstock for the polyester industry, and a mixture of para-xylene, meta-xylene, ortho-xylene, and ethylbenzene is produced during the production of para-xylene. At present, two processes of adsorption separation and crystallization classification are mainly adopted for industrialized separation of paraxylene, and the crystallization method is one of common methods for separating paraxylene because the boiling point difference between components of a mixture containing paraxylene is small and the melting point difference is large.
Chinese patent publication No. CN108794295A discloses a method for separating p-xylene by crystallization, in which a condenser tube is shuttled inside and outside a crystallization tank to simultaneously perform heat exchange and cooling on a mixed xylene liquid raw material from the inside and the outside, and simultaneously, due to the design of a flowing liquid micropore, an inert cooling liquid gradually and slowly permeates into the crystallization tank from different heights in a micro-flowing process, so that the inert cooling liquid does not cause great disturbance to the raw material liquid, the method is favorable for crystal growth, improves the crystal purity and the product yield, and shortens the crystallization time.
Firstly, the method comprises the following steps: the device does not carry out secondary purification to the liquid after the reaction in actual use, reduces the purification rate of p-xylene, and indirectly reduces the actual yield of p-xylene.
Secondly, the method comprises the following steps: the device is when in actual use, does not set up anti-clogging device in discharging pipe department for crystalline form p-xylene jam's phenomenon can appear when the flowing back in the device, reduces production efficiency.
To this end, a new device is proposed to solve the above existing problems.
Disclosure of Invention
The invention aims to provide an auxiliary device for producing paraxylene, which solves the problems in the prior art.
In order to achieve the purpose, the invention provides the following technical scheme: the auxiliary device for producing the paraxylene comprises a crystallization mechanism, wherein the crystallization mechanism comprises a crystallization cylinder, the top of the crystallization cylinder is rotatably connected with a sealing upper cover, and one side of the top of the sealing upper cover is fixedly connected with a feeding pipe communicated with the interior of the crystallization cylinder;
one side of the outside of the crystallization cylinder is fixedly connected with a cold air input mechanism communicated with the inside of the crystallization cylinder, the bottom of the crystallization cylinder is fixedly connected with a conveying mechanism communicated with the inside of the crystallization cylinder, and one end of the conveying mechanism is fixedly connected with a purification mechanism communicated with the conveying mechanism;
the purification mechanism comprises a distillation tank, wherein a sewage discharge pipe communicated with the interior of the distillation tank is fixedly connected to one side of the bottom of the distillation tank, and a material injection pipe communicated with the interior of the distillation tank is fixedly connected to one side of the top of the distillation tank;
and one side of the outside of the distillation tank is fixedly connected with a first air pump communicated with the inside of the distillation tank, and the exhaust end of the first air pump is communicated with the inside of the crystallization cylinder.
Furthermore, one side of the top of the distillation retort is fixedly connected with a first detection meter communicated with the inside of the distillation retort, one end of the outside of the distillation retort is rotatably connected with a second observation window communicated with the inside of the distillation retort, two ends of one side of the outside of the distillation retort are respectively and fixedly connected with a connecting block, and one end of each connecting block is fixed with one end of the outside of the crystallization cylinder.
Further, the top fixedly connected with agitator motor of retort, agitator motor's the output fixedly connected with and the inside output rod that is linked together of retort, the outside fixedly connected with stirring arm of output rod, the stirring arm is provided with a plurality ofly, and the even distribution of equidistance is in the outside of output rod.
Furthermore, the cold air input mechanism comprises a refrigeration tank, one side of the top of the refrigeration tank is fixedly connected with an adding pipe communicated with the inside of the refrigeration tank, the other side of the top of the refrigeration tank is fixedly connected with a second detection meter communicated with the inside of the refrigeration tank, and the bottom of the refrigeration tank is fixedly connected with a decontamination pipe communicated with the inside of the refrigeration tank.
Furthermore, one side of the outside of the refrigeration tank is fixedly connected with a second air pump communicated with the inside of the refrigeration tank, a detachable air delivery pipe is installed at the exhaust end of the second air pump, an activated carbon block with holes is plugged in the air delivery pipe,
the other end of the air pipe is fixed with one end outside the crystallization cylinder, and the crystallization cylinder is communicated with the cold air input mechanism through a second air pump and the air pipe.
Furthermore, the conveying mechanism comprises a liquid pump, a detachable liquid pumping pipe is arranged at the liquid pumping end of the liquid pumping pump, one end of the liquid pumping pipe is fixed with the bottom of the crystallization cylinder, a detachable liquid conveying pipe is arranged at the liquid discharging end of the liquid pumping pump, one end of the liquid conveying pipe is fixed with the bottom of the distillation retort,
the crystallization cylinder, the liquid pumping pipe, the liquid pumping pump, the liquid conveying pipe and the distillation retort are sequentially communicated.
Furthermore, one side of the top of the upper sealing cover is fixedly connected with a pressure detection meter communicated with the inside of the upper sealing cover, one side of the top end of the outer part of the crystallizing cylinder is fixedly connected with a pressure relief pipe communicated with the inside of the crystallizing cylinder, the bottom end of the outer part of the crystallizing cylinder is fixedly connected with a bearing seat, one end of the outer part of the crystallizing cylinder is rotatably connected with a first observation window communicated with the inside of the crystallizing cylinder, and the other end of the outer part of the crystallizing cylinder is fixedly connected with a fishing mechanism communicated with the inside of the crystallizing cylinder.
Furthermore, the fishing mechanism comprises an assembly box, the top end of the assembly box is fixedly connected with a lifting motor, the output end of the lifting motor is fixedly connected with a threaded rod communicated with the interior of the assembly box,
one end of the threaded rod is rotatably connected with the bottom end inside the assembling box, the outer movable screw of the threaded rod is connected with a hinged block, and two ends of the outer part of the hinged block are respectively and movably connected with two ends of the inner part of the assembling box.
Furthermore, one side of the hinge block is fixedly connected with an assembly ring communicated with the interior of the crystallization cylinder, the outer wall of the assembly ring is in sliding connection with the inner wall of the crystallization cylinder,
the inner wall fixedly connected with joint round pin of assembly ring, the joint round pin is provided with a plurality ofly, and the even distribution of equidistance is on the inner wall of assembly ring, the top of joint round pin is pegged graft and is had the filter screen of catching.
Compared with the prior art, the invention has the beneficial effects that:
(1) this p-xylene production auxiliary device through the inside addition soluble salt solution from notes material pipe to the retort for the mixed xylene solution after the reaction can further crystallize the purification through the mode reentrant crystallization intraductal that carries out of distillation, has realized having improved the purification rate of p-xylene with simple mechanical device, has increased the output of p-xylene.
(2) This paraxylene production auxiliary device drives the threaded rod through the lifting motor and rotates to make the setting of filter screen is catched in the pulling of articulated piece, realized having accomplished the collection to the inside paraxylene crystallization of a crystal section of thick bamboo with simple mechanical structure, and reduced the drawing liquid pump from a certain extent when drawing reaction liquid, the production of blocking phenomenon is caused to the drawing liquid pump to the paraxylene crystallization.
(3) This p-xylene production auxiliary device sets up agitator motor through the top at the retort, has realized driving the output lever and the rabbling arm pivoted setting with retort inside looks adaptation through agitator motor, has played the speed of accelerating the inside emulsion salt of retort and has imitated the reaction, and indirect increase the output of p-xylene.
(4) This paraxylene production auxiliary device, through the active carbon that has the porose stopper in the gas transmission pipe on the second aspiration pump, reduced because the purity of the interior paraxylene crystal of a crystallization section of thick bamboo descends because moisture is too much, indirect increase the output of paraxylene, further improvement the purification rate of paraxylene.
Drawings
FIG. 1 is an isometric view of the present invention;
FIG. 2 is a side view of the right and left equiangular shafts of the present invention;
FIG. 3 is a side view of the upper and lower equiangular shafts of the present invention;
FIG. 4 is an external assembly view of the crystallization mechanism of the present invention;
fig. 5 is an external assembly view of the purification mechanism of the present invention;
FIG. 6 is an enlarged view of a portion of the delivery mechanism of the present invention;
FIG. 7 is an external assembly view of the cool air input mechanism according to the present invention;
FIG. 8 is an enlarged view of a portion of the fishing mechanism of the present invention.
In the figure: 1. a crystallization mechanism; 11. a feed pipe; 12. a first observation window; 13. a crystallization cylinder; 14. a load bearing seat; 15. a pressure relief pipe; 16. a pressure detection meter; 17. sealing the upper cover; 2. a purification mechanism; 21. a stirring motor; 22. a material injection pipe; 23. a blow-off pipe; 24. a distillation tank; 25. a second observation window; 26. connecting blocks; 27. a first air pump; 28. a first detection table; 3. a conveying mechanism; 31. a liquid pumping pipe; 32. a liquid pump; 33. a transfusion tube; 4. a cold air input mechanism; 41. a feeding pipe; 42. a second detection table; 43. a refrigeration tank; 44. a second air pump; 45. a sewage removal pipe; 5. a fishing mechanism; 51. a lifting motor; 52. a threaded rod; 53. a hinged block; 54. assembling a box; 55. a latch pin; 56. assembling a ring; 57. and (5) fishing the filter screen.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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.
It should be noted that in the description of the present invention, the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, which are only for convenience of description and simplification of description, and do not indicate or imply that the referred device or element must have a specific orientation, be configured in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Further, it will be appreciated that the dimensions of the various elements shown in the figures are not drawn to scale, for ease of description, and that the thickness or width of some layers may be exaggerated relative to other layers, for example.
It should be noted that like reference numerals and letters refer to like items in the following figures, and thus, once an item is defined or illustrated in one figure, it will not need to be further discussed or illustrated in detail in the description of the following figure.
As shown in fig. 1 to 8, the present invention provides a technical solution: an auxiliary device for producing paraxylene comprises a crystallization mechanism 1.
It should be noted that, as shown in fig. 4, in the embodiment provided in the present application, the crystallization mechanism 1 includes a crystallization cylinder 13, wherein the crystallization cylinder 13 has the following features:
a sealing upper cover 17 is rotatably connected to the top of the crystallization cylinder 13.
The bottom end outside the crystallizing cylinder 13 is fixedly connected with a bearing seat 14.
The bottom of the crystallizing cylinder 13 is fixedly connected with a conveying mechanism 3 communicated with the interior thereof
A cold air input mechanism 4 communicated with the inside of the crystallization cylinder 13 is fixedly connected to one side of the outside of the crystallization cylinder.
One end outside the crystallization cylinder 13 is fixedly connected with a catching mechanism 5 communicated with the interior thereof.
The other end of the outside of the crystallization cylinder 13 is rotatably connected with a first observation window 12 communicated with the inside thereof.
A pressure relief pipe 15 communicated with the interior of the crystallization cylinder 13 is fixedly connected with one side of the top end of the exterior of the crystallization cylinder.
It is further required that a pressure detecting gauge 16 communicated with the inside of the sealing upper cover 17 is fixedly connected to one side of the top of the sealing upper cover 17, and a feeding pipe 11 communicated with the inside of the crystallization cylinder 13 is fixedly connected to one side of the top of the sealing upper cover 17.
In the embodiment provided by the present application, the pressure detecting gauge 16 is a device for detecting the pressure inside the crystallization cylinder 13, and cooperates with the pressure relief pipe 15 to adjust the pressure inside the crystallization cylinder 13.
It should be noted that, in the embodiments provided in the present application, the material used for the devices in the crystallization mechanism 1 may be various.
For example: in some embodiments, the stainless steel material may be martensitic stainless steel metal, wherein it is further noted that martensitic stainless steel metal has high strength, high temperature resistance and low wear resistance, which makes the device have a longer service life than other common metals in practical use.
As shown in fig. 3, in the embodiment provided by the present application, one end of the conveying mechanism 3 is fixedly connected with the purifying mechanism 2 communicated therewith.
As shown in fig. 5, in the embodiment provided herein, the purifier mechanism 2 includes a distillation tank 24.
It should be noted that the distillation tank 24 has the following features:
a sewage discharge pipe 23 communicated with the interior of the distillation tank 24 is fixedly connected with one side of the bottom of the distillation tank.
And a material injection pipe 22 communicated with the interior of the distillation tank 24 is fixedly connected to one side of the top of the distillation tank.
A first detecting gauge 28 communicated with the inside thereof is fixedly connected to one side of the top of the distillation tank 24.
A second observation window 25 is rotatably connected to an end of the outside of the retort 24 to communicate with the inside thereof.
The two ends of the outer side of the distillation tank 24 are fixedly connected with connecting blocks 26 respectively, wherein one end of each connecting block 26 is fixed with one end of the outer side of the crystallization cylinder 13.
It should be noted that, in practical use, the embodiment provided in the present application can be implemented by adding a soluble salt solution (specifically, a potassium acetate solution) from the feeding pipe 22 to the inside of the distillation tank 24, so that the constant boiling points of different isomers in the mixed xylene solution, such as ortho-xylene and meta-xylene, are shifted or disappear, thereby realizing separation of para-xylene by distillation.
It is emphasized that the working principle is to utilize the salt effect to increase the relative volatility between the components to be separated, so that the constant boiling points of the isomers in the xylene raw material are shifted or disappear, and by this way, the defect of poor rectification efficiency of the isomers in the xylene raw material is overcome.
As shown in FIG. 5, in the embodiment provided in the present application, a first suction pump 27 communicating with the inside of the distillation tank 24 is fixedly connected to one side of the outside thereof, and the exhaust end of the first suction pump 27 communicates with the inside of the crystallization cylinder 13.
It should be noted that the first detection table 28 disposed at the top of the distillation tank 24 plays a role in monitoring the internal temperature of the distillation tank 24, and when the temperature in the distillation tank 24 reaches the reaction temperature, the temperature in the distillation tank 24 is kept constant by the external controller.
In addition, as shown in fig. 5, in the embodiment provided by the present application, the top end of the distillation tank 24 is further fixedly connected with a stirring motor 21, an output rod communicated with the inside of the distillation tank 24 is fixedly connected with an output end of the stirring motor 21, a stirring arm is fixedly connected with the outside of the output rod, and the stirring arm is provided with a plurality of stirring arms which are uniformly distributed at the outside of the output rod at equal intervals.
It should be noted that the stirring arm in the present apparatus is an apparatus made of brass, which has excellent corrosion resistance and stability, so that in practical use, there is no case where the stirring arm reacts with the reaction solution at a high temperature.
It should be noted that, in the specific use of the embodiments provided herein, the mechanical devices within the purifying mechanism 2 may be varied.
For example: in some embodiments, the stirring motor 21 may be a high-power gear reduction motor, wherein it should be further noted that the high-power gear reduction motor has the advantages of high overload bearing capability, space saving and high energy saving, which makes the device more effective in reducing energy consumption in practical use.
It should be noted that the stirring motor 21 and the output rod and the stirring arm adapted to the stirring motor in the device accelerate the reaction speed of the emulsion salt, and indirectly increase the purification amount of the paraxylene.
As shown in fig. 7, in the embodiment provided by the present application, the cool air input mechanism 4 includes a refrigerant tank 43.
It should be noted that the refrigeration tank 43 has the following features:
and a feeding pipe 41 communicated with the interior of the refrigerating tank 43 is fixedly connected to one side of the top of the refrigerating tank.
A decontamination pipe 45 communicated with the inside of the refrigeration tank 43 is fixedly connected to the bottom of the refrigeration tank.
The other side of the top of the refrigerating tank 43 is fixedly connected with a second detection meter 42 communicated with the inside of the refrigerating tank.
A second suction pump 44 communicating with the inside of the cooling tank 43 is fixedly connected to one side of the outside thereof.
Wherein a detachable air delivery pipe is installed at the exhaust end of the second air pump 44, and it should be noted that an activated carbon block with holes is plugged inside the air delivery pipe, the other end of the air delivery pipe is fixed with one end outside the crystallization cylinder 13, and the crystallization cylinder 13 is communicated with the cold air input mechanism 4 through the second air pump 44 and the air delivery pipe.
It should be emphasized that the activated carbon block in the device has the effect of dehumidifying the cooling gas, and reduces the purity reduction of the paraxylene crystal in the crystallization cylinder 13 caused by excessive moisture, and it should be noted that the paraxylene in the xylene can be precipitated in the form of crystal by using the normal pressure low temperature crystallization method according to the characteristic that the freezing point and the solubility of each isomer in the xylene solution are different.
As shown in FIG. 6, in the embodiment provided by the present application, the feeding mechanism 3 includes a liquid-drawing pump 32, a liquid-drawing tube 31 is fixedly connected to a liquid-drawing end of the liquid-drawing pump 32, one end of the liquid-drawing tube 31 is fixed to the bottom of the crystallization cylinder 13, a detachable liquid-conveying tube 33 is attached to a liquid-discharging end of the liquid-drawing pump 32, and one end of the liquid-conveying tube 33 is fixed to the bottom of the distillation tank 24.
In practical use, the embodiment provided in the present application requires a detachable filter net to be attached to the inner wall of the liquid drawing end of the liquid drawing pump 32, so as to reduce damage to the liquid drawing pump 32 caused by a small amount of paraxylene crystals adhering to the reaction liquid when the reaction liquid inside the crystallization cylinder 13 is drawn, and further prevent the device from continuing to operate, and a shut-off valve is provided at the connection between the liquid drawing tube 31 and the crystallization cylinder, and a shut-off valve is also provided at the connection between the liquid transport tube 33 and the distillation tank 24.
In the embodiment provided in the present application, the crystallization cylinder 13, the liquid-extracting tube 31, the liquid-extracting pump 32, the liquid-transporting tube 33, and the distillation tank 24 are connected in this order.
As shown in fig. 8, in the embodiment provided by the present application, the fishing mechanism 5 includes a mounting box 54, a lifting motor 51 is fixedly connected to the top end of the mounting box 54, and a threaded rod 52 communicated with the inside of the mounting box 54 is fixedly connected to the output end of the lifting motor 51.
It should be noted that the embodiments provided herein may be varied in the mechanical arrangement of the fishing mechanism 5 in specific operations.
For example: in some embodiments, the lift motor 51 may be a parallel shaft helical gear speed reducer motor, wherein it should be further described that the parallel shaft helical gear speed reducer motor has the advantages of strong overload bearing capability, space saving and high energy saving, which makes the device more effective in reducing energy consumption in practical use.
In addition, one end of the threaded rod 52 is rotatably connected with the bottom end inside the assembling box 54, the outside of the threaded rod 52 is also movably connected with a hinging block 53 in a threaded manner, and two ends of the outside of the hinging block 53 are respectively movably connected with two ends inside the assembling box 54.
It should be noted that one side of the hinge block 53 is fixedly connected with an assembly ring 56 communicated with the inside of the crystallization cylinder 13, the outer wall of the assembly ring 56 is slidably connected with the inner wall of the crystallization cylinder 13, and in addition, the inner wall of the assembly ring 56 is fixedly connected with a plurality of clamping pins 55, wherein the clamping pins 55 are uniformly distributed on the inner wall of the assembly ring 56 at equal intervals, and it should be noted that a catching filter 57 is inserted into the top of the clamping pins 55.
It should be noted that the capturing mechanism 5 in this embodiment plays a role of collecting the paraxylene crystals inside the crystallization barrel 13 in the apparatus, thereby reducing the occurrence of a blocking phenomenon of the paraxylene crystals on the liquid drawing pump 32 when the liquid drawing pump 32 draws the reaction liquid to a certain extent.
When the device is required to be used, xylene is injected into the crystallization cylinder 13 through the feeding pipe 11, the refrigeration tank 43 is enabled to work through the external controller at the moment, the second detection meter 42 is observed, when the temperature reaches the temperature required by crystallization, the second air pump 44 is enabled to work through the external controller, cold air is put into the crystallization cylinder 13, after reaction is carried out for 1-2h, the pressure relief pipe 15 is opened to enable the air pressure inside the crystallization cylinder 13 to be kept at standard air pressure, then the xylene solution inside the crystallization cylinder 13 is observed to be in a turbid state through the first observation window 12, the lifting motor 51 is enabled to work through the external controller at the moment, when the lifting motor 51 works, the threaded rod 52 rotates and drives the hinge block 53 to pull the assembly ring 56, so that the fishing filter screen 57 clamped inside the assembly ring 56 is lifted upwards, and paraxylene crystals in the reaction liquid are fished out, at this time, the first observation window 12 is opened to collect the first batch of paraxylene crystals (note that, in this application, the external structure of the catching filter 57 is adapted to the crystallization cylinder 13, and when the device collects paraxylene crystals, the catching filter 57 is tightly attached to the bottom end inside the crystallization cylinder 13, so when crystals are generated in the crystallization cylinder 13, most of the crystals will be separated out on the catching filter 57, and when the catching filter 57 is pulled by the lifting motor 51 through the threaded rod 52, the air pressure inside the crystallization cylinder 13 is also maintained to the standard air pressure by the pressure relief pipe 15, so that the mixed solution in the crystallization cylinder 13 cannot be crystallized continuously, and therefore, the phenomenon that crystals are separated out inside the crystallization cylinder 13 still exists in the process that the catching filter 57 is lifted upwards does not exist).
When the first batch of paraxylene crystals is collected, the first observation window 12 is closed again, the catching filter screen 57 is immersed into a large amount of reaction liquid again, the liquid suction pump 32 is operated by an external controller, and when the liquid suction pump 32 is operated, the reaction liquid in the crystallization cylinder 13 is transported to the inside of the distillation tank 24 along the path of the liquid suction pipe 31, the liquid suction pump 32 and the liquid transport pipe 33. (it should be noted that, when the liquid pump 32 is not in operation, the shut-off valves provided in the liquid suction pipe 31 and the liquid transport pipe 33 are closed, so that there is no reaction liquid flowing into the inside of the pipe, which results in a decrease in yield)
After the reaction solution enters the distillation retort 24, a soluble salt solution (specifically, a potassium acetate solution) is added to the distillation retort 24 through the injection pipe 22, the temperature of the distillation retort 24 is raised through an external controller, then the first detection table 28 is observed, when the temperature reaches an adaptation point, the external controller makes the second air pump 44 work, high-temperature gaseous paraxylene is reintroduced into the crystallization cylinder 13 in a low-temperature environment, the paraxylene is in a solid-liquid mixed state at the moment, the liquid conveying pipe 33 is separated from the liquid pump 32, the liquid pump 32 works through the external controller to complete the collection of liquid paraxylene, and in addition, the solid crystalline paraxylene in the crystallization cylinder 13 can be collected through the lifting fishing filter screen 57.
It should be noted that during this period, the stirring motor 21 can be activated by an external control, so that the salination reaction rate is increased.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents, to which reference should be made: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (9)
1. A paraxylene production auxiliary device, includes crystallization mechanism (1), its characterized in that: the crystallization mechanism (1) comprises a crystallization cylinder (13), the top of the crystallization cylinder (13) is rotatably connected with a sealing upper cover (17), and one side of the top of the sealing upper cover (17) is fixedly connected with a feeding pipe (11) communicated with the interior of the crystallization cylinder (13);
a cold air input mechanism (4) communicated with the interior of the crystallization cylinder (13) is fixedly connected to one side of the exterior of the crystallization cylinder (13), a conveying mechanism (3) communicated with the interior of the crystallization cylinder (13) is fixedly connected to the bottom of the crystallization cylinder, and a purification mechanism (2) communicated with the conveying mechanism is fixedly connected to one end of the conveying mechanism (3);
the purification mechanism (2) comprises a distillation tank (24), one side of the bottom of the distillation tank (24) is fixedly connected with a sewage discharge pipe (23) communicated with the interior of the distillation tank, and one side of the top of the distillation tank (24) is fixedly connected with a material injection pipe (22) communicated with the interior of the distillation tank;
and one side of the outside of the distillation tank (24) is fixedly connected with a first air pump (27) communicated with the inside of the distillation tank, and the exhaust end of the first air pump (27) is communicated with the inside of the crystallization cylinder (13).
2. The para-xylene production auxiliary device according to claim 1, characterized in that: one side fixedly connected with at retort (24) top rather than the inside first table (28) that detects that is linked together, retort (24) outside one end is rotated and is connected with rather than inside second observation window (25) that are linked together, retort (24) outside both ends of one side respectively fixedly connected with connecting block (26), the one end of two connecting blocks (26) respectively with the outside both ends of crystallization section of thick bamboo (13) are fixed mutually.
3. The para-xylene production auxiliary device according to claim 1, characterized in that: the top fixedly connected with agitator motor (21) of retort (24), the output fixedly connected with of agitator motor (21) and the inside output pole that is linked together of retort (24), the outside fixedly connected with stirring arm of output pole, the stirring arm is provided with a plurality ofly, and the even distribution of equidistance is in the outside of output pole.
4. The para-xylene production auxiliary device according to claim 1, characterized in that: air conditioning input mechanism (4) are including refrigeration jar (43), one side fixedly connected with at refrigeration jar (43) top adds material pipe (41) rather than inside being linked together, the second that the opposite side fixedly connected with at refrigeration jar (43) top is linked together rather than inside detects table (42), scrubbing pipe (45) that the bottom fixedly connected with of refrigeration jar (43) is linked together rather than inside.
5. The auxiliary device for para-xylene production according to claim 4, characterized in that: a second air pump (44) communicated with the inside of the refrigeration tank (43) is fixedly connected with one side of the outside of the refrigeration tank, a detachable air delivery pipe is installed at the exhaust end of the second air pump (44), an activated carbon block with holes is plugged in the air delivery pipe,
the other end of the air pipe is fixed with one end of the outside of the crystallization cylinder (13), and the crystallization cylinder (13) is communicated with the cold air input mechanism (4) through a second air pump (44) and the air pipe.
6. The para-xylene production auxiliary device according to claim 1, characterized in that: the conveying mechanism (3) comprises a liquid pump (32), a detachable liquid pumping pipe (31) is installed at the liquid pumping end of the liquid pumping pump (32), one end of the liquid pumping pipe (31) is fixed with the bottom of the crystallization cylinder (13), a detachable liquid conveying pipe (33) is installed at the liquid discharging end of the liquid pumping pump (32), one end of the liquid conveying pipe (33) is fixed with the bottom of the distillation retort (24),
the crystallization cylinder (13), the liquid pumping pipe (31), the liquid pumping pump (32), the infusion tube (33) and the distillation retort (24) are communicated in sequence.
7. A para-xylene production auxiliary unit according to claim 1, characterized in that; the pressure detection device is characterized in that one side of the top of the upper sealing cover (17) is fixedly connected with a pressure detection meter (16) communicated with the inside of the upper sealing cover, one side of the top of the outer portion of the crystallization cylinder (13) is fixedly connected with a pressure relief pipe (15) communicated with the inside of the crystallization cylinder, the bottom of the outer portion of the crystallization cylinder (13) is fixedly connected with a bearing seat (14), one end of the outer portion of the crystallization cylinder (13) is rotatably connected with a first observation window (12) communicated with the inside of the crystallization cylinder, and the other end of the outer portion of the crystallization cylinder (13) is fixedly connected with a fishing mechanism (5) communicated with the inside of the crystallization cylinder.
8. The para-xylene production auxiliary device according to claim 7, characterized in that: the fishing mechanism (5) comprises an assembly box (54), the top end of the assembly box (54) is fixedly connected with a lifting motor (51), the output end of the lifting motor (51) is fixedly connected with a threaded rod (52) communicated with the interior of the assembly box (54),
one end of the threaded rod (52) is rotatably connected with the bottom end inside the assembling box (54), the outer part of the threaded rod (52) is movably screwed with a hinged block (53), and two ends of the outer part of the hinged block (53) are respectively in sliding connection with two ends of the inner part of the assembling box (54).
9. The para-xylene production auxiliary device according to claim 8, wherein: one side of the hinge block (53) is fixedly connected with an assembly ring (56) communicated with the interior of the crystallization cylinder (13), the outer wall of the assembly ring (56) is in sliding connection with the inner wall of the crystallization cylinder (13),
the inner wall fixedly connected with joint round pin (55) of assembly ring (56), joint round pin (55) are provided with a plurality ofly, and the even distribution of equidistance is on the inner wall of assembly ring (56), the top of joint round pin (55) is pegged graft and is had catching filter screen (57).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111495400.0A CN113877236B (en) | 2021-12-09 | 2021-12-09 | Auxiliary device for producing paraxylene |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111495400.0A CN113877236B (en) | 2021-12-09 | 2021-12-09 | Auxiliary device for producing paraxylene |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113877236A true CN113877236A (en) | 2022-01-04 |
| CN113877236B CN113877236B (en) | 2022-03-11 |
Family
ID=79016595
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111495400.0A Active CN113877236B (en) | 2021-12-09 | 2021-12-09 | Auxiliary device for producing paraxylene |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113877236B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103845916A (en) * | 2014-03-19 | 2014-06-11 | 河北美邦工程科技有限公司 | System and technology for continuously concentrating and collecting crystals |
| WO2015094857A1 (en) * | 2013-12-17 | 2015-06-25 | Bp Corporation North America Inc. | Enhanced heat recovery in paraxylene plant |
| CN206381664U (en) * | 2016-12-19 | 2017-08-08 | 泰奥星（天津）有限公司 | A kind of OIL IN LUBRICATING OIL PRODUCTION equipment |
| CN208678420U (en) * | 2018-07-12 | 2019-04-02 | 安阳师范学院 | A kind of rapid equipment of crystallisation by cooling of chemical solution |
| CN209348155U (en) * | 2018-12-10 | 2019-09-06 | 安徽华馨香料有限公司 | A kind of menthol rapid crystallization system |
| CN213652333U (en) * | 2020-10-12 | 2021-07-09 | 潍坊裕凯化工有限公司 | Device for preparing carbazide |
-
2021
- 2021-12-09 CN CN202111495400.0A patent/CN113877236B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015094857A1 (en) * | 2013-12-17 | 2015-06-25 | Bp Corporation North America Inc. | Enhanced heat recovery in paraxylene plant |
| CN103845916A (en) * | 2014-03-19 | 2014-06-11 | 河北美邦工程科技有限公司 | System and technology for continuously concentrating and collecting crystals |
| CN206381664U (en) * | 2016-12-19 | 2017-08-08 | 泰奥星（天津）有限公司 | A kind of OIL IN LUBRICATING OIL PRODUCTION equipment |
| CN208678420U (en) * | 2018-07-12 | 2019-04-02 | 安阳师范学院 | A kind of rapid equipment of crystallisation by cooling of chemical solution |
| CN209348155U (en) * | 2018-12-10 | 2019-09-06 | 安徽华馨香料有限公司 | A kind of menthol rapid crystallization system |
| CN213652333U (en) * | 2020-10-12 | 2021-07-09 | 潍坊裕凯化工有限公司 | Device for preparing carbazide |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113877236B (en) | 2022-03-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2021088314A1 (en) | Edge-defined film-fed growth-based sapphire crystal growth furnace capable of multiple replacement of seed crystals | |
| CN204601675U (en) | A kind of freeze concentration equipment | |
| CN113877236B (en) | Auxiliary device for producing paraxylene | |
| CN104557433A (en) | Method for producing paraxylene by using multistage suspension crystallization process | |
| CN108176074B (en) | Progressive freeze concentration equipment with double-sandwich structure and freeze concentration method | |
| CN208049441U (en) | A kind of gradual freeze concentration equipment of double sandwich structure | |
| CN116590098A (en) | Crystallization equipment for improving menthol output rate | |
| CN215427403U (en) | Low-sodium high-purity potassium chloride crystallization device | |
| CN211664892U (en) | Industrial wastewater treatment metal recovery device | |
| CN112715715A (en) | Coffee feed liquid freezing and concentrating method and device | |
| CN117959753B (en) | Crystallization device for manufacturing high-grade ferrous sulfate heptahydrate | |
| CN202297195U (en) | Refrigeration denitration device for brine rich in nitro | |
| CN114797156B (en) | Device and method for continuous cooling crystallization | |
| CN205965090U (en) | Combined type barium sulfate crystallization device | |
| CN108477441A (en) | A kind of continuous freezing prepares the device and method of inspissated juice | |
| CN112390286B (en) | Fine filtration pretreatment process for titanium liquid produced by sulfate process titanium dioxide | |
| CN212253339U (en) | Improved generation over-and-under type refrigerating unit structure | |
| CN220309779U (en) | Vacuum cooling crystallization device | |
| CN217677891U (en) | Zinc-nickel plating solution clarification plant | |
| CN210145539U (en) | Simple DMSO (dimethyl sulfoxide) recrystallization system | |
| CN217979934U (en) | Be used in food industry pure water 0 ℃ of pure water to go out water and freeze water unit | |
| CN219479124U (en) | Thawing tank for sea cucumber peptide production | |
| CN206777909U (en) | A kind of dust removal multi-stage melting crystallizer | |
| CN217627643U (en) | Lithium hydroxide conversion solution continuous Miscanthus removal production process system | |
| CN102350081B (en) | Method for producing high-purity chemical |
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 |