CN117553535B - Energy-saving drying system for refined terephthalic acid - Google Patents
Energy-saving drying system for refined terephthalic acid Download PDFInfo
- Publication number
- CN117553535B CN117553535B CN202410028554.6A CN202410028554A CN117553535B CN 117553535 B CN117553535 B CN 117553535B CN 202410028554 A CN202410028554 A CN 202410028554A CN 117553535 B CN117553535 B CN 117553535B
- Authority
- CN
- China
- Prior art keywords
- cylinder
- cylinder body
- feeding
- steam
- assembly
- 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
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 title claims abstract description 56
- 238000001035 drying Methods 0.000 title claims abstract description 33
- 238000007599 discharging Methods 0.000 claims abstract description 41
- 239000000463 material Substances 0.000 claims abstract description 35
- 239000012159 carrier gas Substances 0.000 claims abstract description 15
- 230000000712 assembly Effects 0.000 claims abstract description 13
- 238000000429 assembly Methods 0.000 claims abstract description 13
- 238000009413 insulation Methods 0.000 claims description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 14
- 238000005096 rolling process Methods 0.000 claims description 13
- 238000007789 sealing Methods 0.000 claims description 10
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 229920000742 Cotton Polymers 0.000 claims description 5
- 238000010521 absorption reaction Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000010030 laminating Methods 0.000 claims description 3
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000000034 method Methods 0.000 description 14
- 239000012065 filter cake Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 10
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 8
- 238000004321 preservation Methods 0.000 description 8
- 230000003647 oxidation Effects 0.000 description 7
- 238000007254 oxidation reaction Methods 0.000 description 7
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical compound CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 6
- 230000009471 action Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 239000012535 impurity Substances 0.000 description 6
- 239000002904 solvent Substances 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 5
- 229920000728 polyester Polymers 0.000 description 5
- 239000000843 powder Substances 0.000 description 5
- 238000007670 refining Methods 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000011261 inert gas Substances 0.000 description 4
- 229910052757 nitrogen Inorganic materials 0.000 description 4
- 238000001179 sorption measurement Methods 0.000 description 4
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000835 fiber Substances 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- DYNFCHNNOHNJFG-UHFFFAOYSA-N 2-formylbenzoic acid Chemical compound OC(=O)C1=CC=CC=C1C=O DYNFCHNNOHNJFG-UHFFFAOYSA-N 0.000 description 2
- 230000032683 aging Effects 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- LPNBBFKOUUSUDB-UHFFFAOYSA-N p-toluic acid Chemical compound CC1=CC=C(C(O)=O)C=C1 LPNBBFKOUUSUDB-UHFFFAOYSA-N 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000013585 weight reducing agent Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 239000010408 film Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000002074 melt spinning Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 238000009987 spinning Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B11/00—Machines or apparatus for drying solid materials or objects with movement which is non-progressive
- F26B11/02—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles
- F26B11/04—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis
- F26B11/0445—Machines or apparatus for drying solid materials or objects with movement which is non-progressive in moving drums or other mainly-closed receptacles rotating about a horizontal or slightly-inclined axis having conductive heating arrangements, e.g. heated drum wall
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B23/00—Heating arrangements
- F26B23/10—Heating arrangements using tubes or passages containing heated fluids, e.g. acting as radiative elements; Closed-loop systems
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/001—Handling, e.g. loading or unloading arrangements
- F26B25/002—Handling, e.g. loading or unloading arrangements for bulk goods
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/06—Chambers, containers, or receptacles
- F26B25/14—Chambers, containers, receptacles of simple construction
- F26B25/16—Chambers, containers, receptacles of simple construction mainly closed, e.g. drum
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Drying Of Solid Materials (AREA)
Abstract
The invention discloses an energy-saving drying system for refined terephthalic acid, which relates to the technical field of drying and comprises the following components: the cylinder body is obliquely arranged, two ends of the cylinder body are respectively provided with a feeding end and a discharging end, and the feeding end is higher than the discharging end; the support assemblies are arranged in two groups and are arranged on the cylinder at intervals; the driving component is connected with the cylinder body and is positioned between the two groups of supporting components; the feeding component is arranged at the feeding end of the cylinder body and is provided with a carrier gas output interface communicated with the inside of the cylinder body; and be provided with row material subassembly and steam component in barrel discharge end, and be provided with the intercommunication on the row material subassembly the inside carrier gas input interface of barrel, just steam component part structure extends to inside the barrel for reduce the scale deposit influence and improve drying efficiency and reduce the energy consumption.
Description
Technical Field
The invention relates to the technical field of drying, in particular to an energy-saving drying system for refined terephthalic acid.
Background
The Purified Terephthalic Acid (PTA) is an important intermediate in two industries of textile chemical fiber and petrochemical industry, is a core raw material for producing polyester fiber, is also a basic chemical raw material with very wide application, is mainly used for producing polyester chips by esterification with ethylene glycol at present, is prepared into polyester fiber by melt spinning, and is widely used for spinning, and in addition, the polyester is also used for producing film, coating, paint and polyester plastics.
The main flow process of the current PTA production is a two-step PX oxidation hydrogenation refining method, the PTA production process almost covers all typical chemical units, the PTA production is divided into two parts of oxidation and refining, the oxidation process adopts a liquid phase catalytic oxidation method, under the action of acetic acid (HAc) serving as a solvent auxiliary accelerator and a catalyst, paraxylene (PX) is oxidized to generate Crude Terephthalic Acid (CTA), and then crystallization, separation and drying are carried out after secondary oxidation; the refining process is to make CTA dissolved in water undergo the process of selective hydrogenation reaction under the condition of high temperature and high pressure, and to convert the impurity carboxybenzaldehyde (4-CBA) into p-methylbenzoic acid (Pt acid) which is easy to dissolve in water, and then to treat the mixture to complete PTA production.
In the drying process, impurities adhere to the dryer tube and can cause scale formation of the dryer tube, along with the extension of the running time of the dryer, the adhesion of the inner wall of the dryer tube is increased, the heat resistance of the scale is increased, after a certain period of running, the dryer is required to be thoroughly alkali washed, the corresponding running period is short, the starting and stopping times are high in energy consumption and the productivity is influenced, and in addition, the process of alkali washing is complicated, the equipment of the dryer is large in flow and difficult.
It is therefore desirable to provide an energy-efficient drying system for purified terephthalic acid to solve the above-mentioned problems.
Disclosure of Invention
In order to achieve the above purpose, the present invention provides the following technical solutions: an energy efficient drying system for purified terephthalic acid comprising:
the cylinder body is obliquely arranged, two ends of the cylinder body are respectively provided with a feeding end and a discharging end, and the feeding end is higher than the discharging end;
the support assemblies are arranged in two groups and are arranged on the cylinder at intervals;
the driving component is connected with the cylinder body and is positioned between the two groups of supporting components;
the feeding component is arranged at the feeding end of the cylinder body and is provided with a carrier gas output interface communicated with the inside of the cylinder body;
a discharging assembly and a steam assembly are arranged at the discharging end of the cylinder body, a carrier gas input interface communicated with the inside of the cylinder body is arranged on the discharging assembly, and a part of the steam assembly extends to the inside of the cylinder body;
the steam component is characterized by further comprising a heat exchange component arranged inside the cylinder body, the heat exchange component comprises heat exchange pipes and a support pipe rack, the heat exchange pipes are arranged into a plurality of groups, the heat exchange pipes are arranged into a plurality of rings in a concentric circle mode and are close to the inner wall of the cylinder body, and the heat exchange pipes are fixed through the support pipe racks which are fixedly arranged along the axial interval of the cylinder body.
The steam assembly further comprises a plurality of scale gathering assemblies, the scale gathering assemblies are rotatably arranged between two adjacent support pipe frames, and the scale gathering assemblies are also arranged between two adjacent heat exchange pipes.
Further, as the preference, the supporting component includes rolling circle and backing roll, the rolling circle cup joints the outer wall of barrel, the backing roll symmetry sets up to two, backing roll cylinder surface laminating the rolling circle cylinder surface, just the backing roll all is located the rolling circle below.
Further, preferably, the driving assembly comprises a driving motor, a toothed ring and a speed reducer, wherein the toothed ring is fixedly sleeved on the cylindrical surface of the cylinder body, and the driving motor is connected with the toothed ring through the speed reducer for transmission.
Further, preferably, the feeding assembly includes:
the feeding cylinder is provided with a feeding end of the cylinder body, a material body input machine communicated with the inside of the cylinder body is arranged in the feeding cylinder, the feeding cylinder is movably connected with the cylinder body, and a sealing structure is arranged at the connecting position;
the feeding interface is fixedly arranged on the feeding cylinder and communicated with the material body input machine.
Further, preferably, the discharging assembly includes:
the discharging barrel is arranged at the discharging end of the barrel body, and a material body output machine communicated with the interior of the barrel body is arranged in the discharging barrel;
the discharging interface is fixedly arranged below the discharging barrel and communicated with the material body output machine.
Further, preferably, the steam assembly includes:
the steam chamber is arranged between the discharge cylinder and the discharge end of the cylinder body, and is fixedly connected with the discharge cylinder, and the steam chamber is movably connected with the discharge end of the cylinder body by virtue of a sealing structure;
the steam shaft is fixedly arranged at one end of the discharge cylinder far away from the steam chamber, a steam input interface and a condensate water output port are fixedly arranged on the steam shaft, and the steam input interface and the condensate water output port penetrate through the discharge cylinder through pipelines and are connected to the steam chamber.
Further, preferably, the scale accumulating assembly comprises:
the insulation bin is semi-cylindrical in whole, a reserved space in the insulation bin is used for filling insulation media, and a sealing port is arranged on the plane of the insulation bin;
the rotating shafts are fixedly arranged at two ends of the heat preservation bin and are rotatably arranged on the support pipe rack,
the limit nail is arranged on the rotating shaft in a threaded connection manner;
the silk screen is attached the cambered surface setting of heat preservation storehouse, just heat preservation storehouse arrangement silk screen position department has seted up flutedly, just the silk screen with the clamp has the absorption cotton between the recess.
Further, preferably, the thermal insulation bin rotates along with the rotating shaft, and the thermal insulation bin rotates to be attached to the heat exchange tube, that is, the thermal insulation bin rotates within a limited range under the limitation of the heat exchange tube.
Compared with the prior art, the invention provides an energy-saving drying system for refined terephthalic acid, which has the following beneficial effects:
according to the invention, as the cylinder rotates, the heat preservation bin is in contact with the heat exchange tube to continuously heat and preserve heat under the action of a heat preservation medium, a larger thermal contact surface is provided in the CTA drying process, and the drying efficiency is improved;
the adsorption cotton in the invention gradually hardens along with the increase of the adhesion scaling, the adsorption effect starts to be reduced, at the moment, the heat exchange tube still has enough direct contact surface with the materials, and the following treatment modes are as follows:
mode one: the method can ensure the long-term operation aging under the premise of not cleaning the scale, and the method can reduce the shutdown frequency, improve the treatment capacity and integrally reduce the energy consumption when the follow-up heat exchange tube is accumulated and excessively scaled to influence the heat transfer effect;
mode two: in time shut down the clearance scale deposit, only need dismantle alone when this mode clearance gathers dirty subassembly and change, gather dirty subassembly single structure littleer, and can discharge the heat preservation medium weight reduction in the heat preservation storehouse for corresponding dismantlement process is more simple and convenient, and follow-up change alone or clearance of being convenient for compares in complete machine alkaline wash more convenient energy-conserving.
Drawings
FIG. 1 is a schematic diagram of the overall structure of an energy-efficient drying system for purified terephthalic acid;
FIG. 2 is a schematic diagram of a discharge assembly in an energy efficient drying system for purified terephthalic acid;
FIG. 3 is a schematic view of a part of the heat exchange assembly in the energy-saving drying system of the purified terephthalic acid;
FIG. 4 is a schematic illustration of the location of a scale accumulating assembly in a refined terephthalic acid energy efficient drying system;
FIG. 5 is a schematic diagram of a scale accumulating assembly in an energy efficient drying system for purified terephthalic acid;
FIG. 6 is a schematic view of the deflection state of the scale accumulating assembly in the energy efficient drying system of purified terephthalic acid;
FIG. 7 is an enlarged schematic view of the structure of FIG. 6 at A;
in the figure: 1. a cylinder; 2. a support assembly; 21. a rolling ring; 22. a support roller; 3. a drive assembly; 31. a driving motor; 32. a toothed ring; 33. a speed reducer; 4. a feed assembly; 41. a feed cylinder; 42. a feed port; 5. a discharge assembly; 51. a discharge cylinder; 52. a discharging interface; 6. a steam assembly; 61. a steam chamber; 62. a steam shaft; 63. a steam input interface; 64. a condensed water outlet; 65. a heat exchange assembly; 651. a heat exchange tube; 652. a support tube rack; 66. a scale assembly; 661. a thermal insulation bin; 662. a rotating shaft; 663. a limit nail; 664. sealing the mouth; 665. a silk screen; 7. a carrier gas input interface; 8. carrier gas output interface.
Detailed Description
Referring to fig. 1 to 7, in an embodiment of the present invention, an energy-saving drying system for refined terephthalic acid includes:
the device comprises a cylinder body 1, wherein the cylinder body 1 is obliquely arranged, two ends of the cylinder body 1 are respectively provided with a feeding end and a discharging end, and the feeding end is higher than the discharging end, so that a CTA filter cake can automatically move from the feeding end to the discharging end in the cylinder body 1;
the support assemblies 2 are arranged in two groups and are arranged on the cylinder body 1 at intervals;
the driving component 3 is connected with the cylinder 1, the driving component 3 is positioned between the two groups of supporting components 2, and the driving component 3 can drive the cylinder 1 to rotate;
the feeding component 4 is arranged at the feeding end of the cylinder body 1, and a carrier gas output interface 8 communicated with the inside of the cylinder body 1 is arranged on the feeding component 4;
and be provided with row material subassembly 5 and steam component 6 in barrel 1 discharge end, and be provided with the intercommunication on the row material subassembly 5 the inside carrier gas input interface 7 of barrel 1, just steam component 6 part structure extends to barrel 1 is inside.
It should be explained that during PTA production, crude Terephthalic Acid (CTA) oxidation and refining are carried out, wherein during oxidation, slurry is filtered and washed by a vacuum filter to form a CTA filter cake, the CTA filter cake is conveyed into the drying system by a screw conveyor, volatile components in the CTA filter cake are evaporated, the volatile components in the CTA filter cake mainly comprise acetic acid with the mass fraction of 90% and 10% of water from a solvent, the moisture content of the filter cake is reduced from 12.0% -15.0% to 0.1%, and the filter cake is conveyed for refining.
It should be explained that, the whole working process is that the CTA filter cake is conveyed into the cylinder 1 through the feeding component 4, CTA moves towards the discharge end of the cylinder 1 under the action of gravity, and simultaneously, along with the rotation of the cylinder 1, CTA is uniformly contacted with the steam component 6 to be heated and dried, and meanwhile, dry inert gas is input from the carrier gas input interface 7, nitrogen is selected in the application of the dry inert gas, flows in the opposite CTA flowing direction, and the solvent and impurities carrying evaporation are discharged and conveyed into the nitrogen washing tower for washing through the carrier gas output interface 8, and CTA powder is discharged through the discharging component 5.
As a preferred embodiment, the support assembly 2 includes a rolling ring 21 and support rollers 22, the rolling ring 21 is sleeved on the outer wall of the cylinder 1, the two support rollers 22 are symmetrically arranged, the cylindrical surfaces of the support rollers 22 are attached to the cylindrical surfaces of the rolling ring 21, the support rollers 22 are all located below the rolling ring 21, and the support rollers 22 support the cylinder 1 to rotate.
As a preferred embodiment, the driving assembly 3 includes a driving motor 31, a toothed ring 32, and a speed reducer 33, wherein the toothed ring 32 is fixedly sleeved on the cylindrical surface of the cylinder body 1, and the driving motor 31 is connected with the toothed ring 32 through the speed reducer 33 for transmission.
In this embodiment, as shown in fig. 1, the feeding assembly 4 includes:
the feeding cylinder 41 is arranged at the feeding end of the cylinder 1, a material body input machine which is communicated with the inside of the cylinder 1 is arranged in the feeding cylinder 41, the feeding cylinder 41 is movably connected with the cylinder 1, a sealing structure is arranged at the connecting position, the material body input machine can adopt a screw conveyor, the material body input machine and the feeding cylinder 41 are coaxially and fixedly arranged, the output end of the material body input machine extends to the cylinder 1, and along with the operation of the material body input machine, a CTA filter cake is axially transported towards the cylinder 1 along the feeding cylinder 41 until the CTA filter cake enters the cylinder 1;
the feeding interface 42 is fixedly arranged on the feeding cylinder 41, and the feeding interface 42 is communicated with the material body input machine, and the CTA filter cake is added and falls on the input end of the material body input machine through the feeding interface 42.
In this embodiment, as shown in fig. 2, the discharging assembly 5 includes:
the discharging barrel 51 is arranged at the discharging end of the barrel 1, a material body output machine communicated with the inside of the barrel 1 is arranged in the discharging barrel 51, the material body output machine can also adopt a screw conveyor, the material body output machine is coaxially and fixedly arranged in the discharging barrel 51, the input end of the material body output machine extends to the barrel 1, the finished dry CTA powder enters the material body output machine from the barrel 1 under the action of dead weight, and along with the operation of the material body output machine, the CTA powder is assisted to be transported in the direction away from the barrel 1 in the axial direction in the discharging barrel 51;
the discharging interface 52 is fixedly arranged below the discharging barrel 51, the discharging interface 52 is communicated with the material body output machine, the output end of the material body output machine is correspondingly arranged above the discharging interface 52, and CTA powder is discharged through the discharging interface 52.
In this embodiment, as shown in fig. 2, the steam assembly 6 includes:
the steam chamber 61 is arranged between the discharge cylinder 51 and the discharge end of the cylinder body 1, the steam chamber 61 is of a hollow annular structure, a material output machine passes through the middle of the steam chamber 61, the steam chamber 61 is fixedly connected with the discharge cylinder 51, and the steam chamber 61 is movably connected with the discharge end of the cylinder body 1 by virtue of a sealing structure;
the steam shaft 62 is fixedly arranged at one end of the discharge cylinder 51 far away from the steam chamber 61, the steam shaft 62 is fixedly provided with a steam input interface 63 and a condensate water output port 64, the steam input interface 63 and the condensate water output port 64 penetrate through pipelines, the discharge cylinder 51 is connected to the steam chamber 61, the pipelines are particularly arranged in a plurality, the pipelines are arranged along the axial direction of the discharge cylinder 51 and the steam shaft 62, the pipelines are embedded in the inner wall of the discharge cylinder 51 and extend into the steam shaft 62, one ends of the pipelines are fixedly communicated with the steam chamber 61, and the other ends of the pipelines are fixedly communicated with the steam input interface 63 and the condensate water output port 64 respectively.
In this embodiment, as shown in fig. 3, the steam assembly 6 further includes a heat exchange assembly 65 disposed inside the cylinder 1, the heat exchange assembly 65 includes heat exchange tubes 651 and support tube racks 652, the heat exchange tubes 651 are disposed in multiple groups, the heat exchange tubes 651 are arranged in concentric circles and close to the inner wall of the cylinder 1 to form a plurality of circles, and the heat exchange tubes 651 are fixed by a plurality of support tube racks 652 that are fixedly disposed along the axial direction of the cylinder 1 at intervals.
It should be noted that the steam is fed into the steam chamber 61 through the steam input port 63, the steam chamber 61 distributes the steam into the heat exchange tube 651 while the condensed water is refluxed into the steam chamber 61, and then the condensed water is discharged through the condensed water output port 64.
In this embodiment, as shown in fig. 4, the steam assembly 6 further includes a plurality of scale accumulating assemblies 66, the scale accumulating assemblies 66 are rotatably disposed between two adjacent support tube frames 652, and the scale accumulating assemblies 66 are also disposed between two adjacent heat exchange tubes 651.
In this embodiment, as shown in fig. 5, the scale accumulating assembly 66 includes:
the insulation bin 661 is semi-cylindrical in whole, a reserved space in the insulation bin 661 is used for filling insulation media, and a sealing opening 664 is formed in the plane of the insulation bin 661;
a rotating shaft 662 fixedly arranged at two ends of the thermal insulation bin 661, and the rotating shaft 662 is rotatably arranged on the support pipe rack 652,
a limiting pin 663 which is arranged on the rotating shaft 662 in a threaded connection manner;
the silk screen 665, laminating the setting of insulation storehouse 661 cambered surface, just insulation storehouse 661 settles silk screen 665 position department and has seted up the recess, just silk screen 665 with the absorption cotton is held between the recess.
As the preferred embodiment, the rotating shaft 662 is rotatably mounted on the support pipe rack 652, and the insulation chamber 661 is filled with insulation medium, so that the cambered surface of the insulation chamber 661 always has a downward trend under the action of gravity; as shown in fig. 6 and 7, the distance from the arc surface of the thermal insulation bin 661 to the axis of the rotating shaft 662 is D2, and the distance from the axis of the heat exchange tube 651 to the axis of the rotating shaft 662 is D1, then D2> D1, i.e. the arc surface of the corresponding thermal insulation bin 661 is always limited to be located in the track cylinder formed by the heat exchange tube 651; when the cylinder 1 rotates, as shown in fig. 6, the height of the thermal insulation bin 661 in the vertical direction changes periodically, from the highest position in the vertical direction to the lowest position in the vertical direction, the thermal insulation bin 661 rotates by the rotating shaft 662, the state that the arc surface of the thermal insulation bin 661 keeps vertical downward changes into the state that the thermal insulation bin 661 is attached to the heat exchange tube 651, and as the cylinder 1 continues to rotate, the arc surface of the thermal insulation bin 661 gradually breaks away from contact with the heat exchange tube 651 and falls reversely to collide with the heat exchange tube 651 at the other side, then the thermal insulation bin 661 is gradually separated from the heat exchange tubes 651 at the two sides, and the thermal insulation bin 661 gradually changes into the state that the thermal insulation bin 661 is in a period in the vertical direction, namely, when materials enter the cylinder 1 and have adhesion, in the collision process, the bulk materials fall off from the heat exchange tube 651 or the thermal insulation bin 661, and the bulk materials are split into small blocks under vibration, accordingly, the material dispersion can be promoted, and drying can be promoted.
It should be explained that, in the working process, as the cylinder 1 rotates, the thermal insulation bin 661 continuously heats up and insulates under the effect of the insulation medium by contacting the heat exchange tube 651, and provides a larger thermal contact surface in the CTA drying process, thereby improving the drying efficiency.
It should be explained that, scaling is because wet materials enter the cylinder 1 and are adhered to the heat exchange tube 651 in a multiple direct contact manner, impurities are not evaporated along with the solvent, and the solvent is taken away by the carrier gas, so that impurities remain and adhere to the heat exchange tube 651.
In addition, the application can provide two different treatment modes, the adsorption cotton is gradually hardened along with the increase of the attached scale, the adsorption effect starts to be reduced, the heat exchange tube 651 still has enough direct contact surface with materials at the moment, and the following treatment modes are as follows:
mode one: the operation is continued without cleaning the scale, the operation aging is prolonged on the premise of ensuring the heat transfer effect, and when the heat transfer effect is affected by excessive scale attached to the subsequent heat exchange tube 651, the whole alkaline washing is performed after the machine is stopped, so that the machine stopping frequency can be reduced, the treatment capacity is improved, and the energy consumption is reduced as a whole;
mode two: in time shut down the clearance scale deposit, only need dismantle alone when this mode clearance gathers dirty subassembly 66 and change, gather dirty subassembly 66 single structure littleer, and can discharge the heat preservation medium weight reduction in the insulation storehouse 661 for corresponding dismantlement process is more simple and convenient, and follow-up change alone or clearance of being convenient for compares in complete machine alkaline wash more convenient energy-conservation.
In the concrete implementation, a CTA filter cake is conveyed into the cylinder 1 through the feeding component 4, CTA moves towards the discharge end of the cylinder 1 under the action of gravity, CTA is uniformly contacted with the steam component 6 to be heated and dried along with the rotation of the cylinder 1, meanwhile, dry inert gas is input from the carrier gas input interface 7, nitrogen is selected in the dry inert gas, the flow of the CTA is reversed, the solvent and impurities carrying evaporation are discharged and conveyed into the nitrogen washing tower through the carrier gas output interface 8 to be washed, and CTA powder is discharged through the discharging component 5.
The foregoing description is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical solution of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. An energy-efficient drying system for purified terephthalic acid, comprising:
the cylinder body (1) is obliquely arranged, two ends of the cylinder body (1) are respectively a feeding end and a discharging end, and the feeding end is higher than the discharging end;
the support assemblies (2) are arranged in two groups and are arranged on the cylinder body (1) at intervals;
the driving component (3) is connected with the cylinder body (1), and the driving component (3) is positioned between the two groups of supporting components (2);
the feeding component (4) is arranged at the feeding end of the cylinder body (1), and a carrier gas output interface (8) communicated with the inside of the cylinder body (1) is arranged on the feeding component (4);
a discharging assembly (5) and a steam assembly (6) are arranged at the discharging end of the cylinder body (1), a carrier gas input interface (7) communicated with the inside of the cylinder body (1) is arranged on the discharging assembly (5), and part of the steam assembly (6) extends to the inside of the cylinder body (1);
the steam assembly (6) further comprises a heat exchange assembly (65) arranged inside the cylinder (1), the heat exchange assembly (65) comprises heat exchange pipes (651) and support pipe racks (652), the heat exchange pipes (651) are arranged in a plurality of groups, the heat exchange pipes (651) are arranged in a concentric circle mode to be close to the inner wall of the cylinder (1) to form a plurality of circles, and the heat exchange pipes (651) are fixed through the support pipe racks (652) which are fixedly arranged along the axial direction of the cylinder (1) at intervals;
the steam assembly (6) further comprises a plurality of scale gathering assemblies (66), the scale gathering assemblies (66) are rotatably arranged between two adjacent support pipe frames (652), and the scale gathering assemblies (66) are also arranged between two adjacent heat exchange pipes (651).
2. The energy-saving drying system for refined terephthalic acid according to claim 1, wherein the supporting component (2) comprises a rolling ring (21) and supporting rollers (22), the rolling ring (21) is sleeved on the outer wall of the cylinder body (1), the two supporting rollers (22) are symmetrically arranged, the cylindrical surfaces of the supporting rollers (22) are attached to the cylindrical surfaces of the rolling ring (21), and the supporting rollers (22) are all located below the rolling ring (21).
3. The energy-saving drying system for refined terephthalic acid according to claim 1, wherein the driving assembly (3) comprises a driving motor (31), a toothed ring (32) and a speed reducer (33), wherein the toothed ring (32) is fixedly sleeved on the cylindrical surface of the cylinder body (1), and the driving motor (31) is in transmission connection with the toothed ring (32) through the speed reducer (33).
4. The energy-efficient drying system for purified terephthalic acid according to claim 1, wherein the feeding assembly (4) comprises:
the feeding cylinder (41) is arranged at the feeding end of the cylinder body (1), a material body input machine communicated with the inside of the cylinder body (1) is arranged inside the feeding cylinder (41), the feeding cylinder (41) is movably connected with the cylinder body (1), and a sealing structure is arranged at the connecting position;
the feeding interface (42) is fixedly arranged on the feeding cylinder (41), and the feeding interface (42) is communicated with the material body input machine.
5. The energy-efficient drying system for purified terephthalic acid according to claim 1, wherein the discharge assembly (5) comprises:
the discharging barrel (51) is arranged at the discharging end of the barrel (1), and a material body output machine communicated with the inside of the barrel (1) is arranged in the discharging barrel (51);
the discharging interface (52) is fixedly arranged below the discharging barrel (51), and the discharging interface (52) is communicated with the material body output machine.
6. The energy-efficient drying system for purified terephthalic acid according to claim 5, wherein said steam assembly (6) comprises:
the steam chamber (61) is arranged between the discharge cylinder (51) and the discharge end of the cylinder body (1), the steam chamber (61) is fixedly connected with the discharge cylinder (51), and the steam chamber (61) is movably connected with the discharge end of the cylinder body (1) by virtue of a sealing structure;
the steam shaft (62) is fixedly arranged at one end, far away from the steam chamber (61), of the discharge cylinder (51), a steam input interface (63) and a condensate water output port (64) are fixedly arranged on the steam shaft (62), and the steam input interface (63) and the condensate water output port (64) penetrate through the discharge cylinder (51) through pipelines to be connected to the steam chamber (61).
7. The energy efficient drying system of purified terephthalic acid according to claim 1, wherein the scale assembly (66) comprises:
the insulation bin (661) is semi-cylindrical in whole, a reserved space in the insulation bin (661) is used for filling insulation media, and a sealing port (664) is formed in the plane of the insulation bin (661);
a rotating shaft (662) fixedly arranged at two ends of the thermal insulation bin (661), the rotating shaft (662) is rotatably arranged on the support pipe rack (652),
the limit nail (663) is arranged on the rotating shaft (662) in a threaded connection manner;
the silk screen (665), laminating insulation storehouse (661) cambered surface sets up, just insulation storehouse (661) settle silk screen (665) position department and set up flutedly, just silk screen (665) with the clamp has the absorption cotton between the recess.
8. The energy-saving drying system for refined terephthalic acid according to claim 7, wherein the thermal insulation bin (661) rotates along with the rotating shaft (662), and the thermal insulation bin (661) rotates to be attached to the heat exchange tube (651), namely, the thermal insulation bin (661) rotates within a limited range under the limit of the heat exchange tube (651).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410028554.6A CN117553535B (en) | 2024-01-09 | 2024-01-09 | Energy-saving drying system for refined terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410028554.6A CN117553535B (en) | 2024-01-09 | 2024-01-09 | Energy-saving drying system for refined terephthalic acid |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117553535A CN117553535A (en) | 2024-02-13 |
| CN117553535B true CN117553535B (en) | 2024-03-15 |
Family
ID=89818850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202410028554.6A Active CN117553535B (en) | 2024-01-09 | 2024-01-09 | Energy-saving drying system for refined terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117553535B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE558046C (en) * | 1930-09-25 | 1932-08-31 | Augustinus Edvard Jonsson | Cleaning device on sieves for rotating or swinging vacuum drying drums |
| AU2009240871A1 (en) * | 2008-11-27 | 2010-06-10 | Shepherd Systems Pty. Ltd. | Apparatus, dryer and method for drying a particulate product with superheated steam |
| CN102345972A (en) * | 2010-07-29 | 2012-02-08 | 绿色科技有限公司 | Drying machine |
| CN103017506A (en) * | 2012-12-05 | 2013-04-03 | 东台市食品机械厂有限公司 | Non-detaching cleaning device for enclosed cover of rotary drum drier |
| JP2014081152A (en) * | 2012-10-17 | 2014-05-08 | Kihara Seisakusho:Kk | Drum type dryer |
| CN106745425A (en) * | 2017-01-17 | 2017-05-31 | 北京今大禹环境技术股份有限公司 | A kind of efficient tube type falling liquid film steam raising plant for desalinization |
| CN106767034A (en) * | 2017-01-09 | 2017-05-31 | 湖北朗森热工工程有限公司 | Nodal type inner fin pipe |
| CN215683496U (en) * | 2021-07-23 | 2022-02-01 | 山东雪莱粮仓智能科技有限公司 | Ventilation device based on heat preservation cabin |
| CN115031497A (en) * | 2022-08-11 | 2022-09-09 | 上海旭东海普南通药业有限公司 | Medical urea vacuum drying process |
| CN116447914A (en) * | 2023-04-26 | 2023-07-18 | 徐州顺风阀门有限公司 | Cleaning and drying equipment for heat exchanger |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1237335B (en) * | 1983-03-23 | 1993-05-31 | Cam Srl | Metal scrap drying installation |
-
2024
- 2024-01-09 CN CN202410028554.6A patent/CN117553535B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE558046C (en) * | 1930-09-25 | 1932-08-31 | Augustinus Edvard Jonsson | Cleaning device on sieves for rotating or swinging vacuum drying drums |
| AU2009240871A1 (en) * | 2008-11-27 | 2010-06-10 | Shepherd Systems Pty. Ltd. | Apparatus, dryer and method for drying a particulate product with superheated steam |
| CN102345972A (en) * | 2010-07-29 | 2012-02-08 | 绿色科技有限公司 | Drying machine |
| JP2014081152A (en) * | 2012-10-17 | 2014-05-08 | Kihara Seisakusho:Kk | Drum type dryer |
| CN103017506A (en) * | 2012-12-05 | 2013-04-03 | 东台市食品机械厂有限公司 | Non-detaching cleaning device for enclosed cover of rotary drum drier |
| CN106767034A (en) * | 2017-01-09 | 2017-05-31 | 湖北朗森热工工程有限公司 | Nodal type inner fin pipe |
| CN106745425A (en) * | 2017-01-17 | 2017-05-31 | 北京今大禹环境技术股份有限公司 | A kind of efficient tube type falling liquid film steam raising plant for desalinization |
| CN215683496U (en) * | 2021-07-23 | 2022-02-01 | 山东雪莱粮仓智能科技有限公司 | Ventilation device based on heat preservation cabin |
| CN115031497A (en) * | 2022-08-11 | 2022-09-09 | 上海旭东海普南通药业有限公司 | Medical urea vacuum drying process |
| CN116447914A (en) * | 2023-04-26 | 2023-07-18 | 徐州顺风阀门有限公司 | Cleaning and drying equipment for heat exchanger |
Non-Patent Citations (1)
| Title |
|---|
| 王雅彬.氧化干燥机内部结垢原因分析及处理措施.石油化工设备技术. 2016,37(03).2016,第45页-第48页. * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117553535A (en) | 2024-02-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101385962A (en) | Reaction filter drying apparatus with compression membrane | |
| CN117553535B (en) | Energy-saving drying system for refined terephthalic acid | |
| CN216629708U (en) | NMP rectification purification system | |
| CN201971771U (en) | High-efficient agitation-free starch dehydrating vacuum suction filter | |
| CN101732881A (en) | Molecular distillation apparatus | |
| CN201275482Y (en) | Equipment for reaction, filtration and drying with squeezing diaphragm | |
| CN201284232Y (en) | Apparatus for directly and continuously producing insoluble sulfur | |
| CN207616959U (en) | A kind of taper horizontal plastic film stubbornness impurity separator | |
| CN201586429U (en) | Pressure rotary filter | |
| CN100522915C (en) | Process for isolating crude terephthalic acid(CTA) | |
| CN216320002U (en) | Internal and external heating film evaporator | |
| CN116972602A (en) | A moisture evaporimeter for chemical resin is dry | |
| CN109809670A (en) | A kind of drying device of power plant desulfurization denitration wastewater sludge | |
| CA2217906C (en) | Method for the concentration of liquid mixtures | |
| CN209291978U (en) | A kind of preparation system of sodium pyrosulfite or sodium sulfite | |
| CN201361460Y (en) | High-efficiency molecular distiller | |
| CN207856451U (en) | Produce the drying machine of the material of coating | |
| CN215538487U (en) | PGMEA waste liquid treatment scraper evaporator | |
| CN201322514Y (en) | Bicone drying unit | |
| CN219023265U (en) | Film rolling type evaporator | |
| CN108380634A (en) | Spin-drying system is continuously isolated using the formula of lying of aluminium plastic composite material | |
| CN111714995B (en) | Air purification equipment is used in production of medicinal glass guan dan na method | |
| CN108484390A (en) | A kind of aromatic carboxylic acid production process method and apparatus of energy-saving and environmental protection | |
| CN116441239A (en) | Deacidification washing device and method for producing high-purity spherical graphite | |
| CN221106984U (en) | Efficient and energy-saving ammonium sulfate concentration device |
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 |