CN116532060A - Continuous production equipment and process for refined terephthalic acid - Google Patents
Continuous production equipment and process for refined terephthalic acid Download PDFInfo
- Publication number
- CN116532060A CN116532060A CN202310359945.1A CN202310359945A CN116532060A CN 116532060 A CN116532060 A CN 116532060A CN 202310359945 A CN202310359945 A CN 202310359945A CN 116532060 A CN116532060 A CN 116532060A
- Authority
- CN
- China
- Prior art keywords
- tank
- exhaust
- communicated
- terephthalic acid
- crystallization
- 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.)
- Pending
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 85
- 238000010924 continuous production Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 9
- 238000002425 crystallisation Methods 0.000 claims abstract description 51
- 230000008025 crystallization Effects 0.000 claims abstract description 51
- 238000001035 drying Methods 0.000 claims abstract description 45
- 239000007789 gas Substances 0.000 claims abstract description 35
- 238000000926 separation method Methods 0.000 claims abstract description 30
- 239000002912 waste gas Substances 0.000 claims abstract description 28
- 239000000463 material Substances 0.000 claims abstract description 24
- 230000007797 corrosion Effects 0.000 claims description 4
- 238000005260 corrosion Methods 0.000 claims description 4
- 238000002640 oxygen therapy Methods 0.000 claims description 3
- 239000003973 paint Substances 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- 239000007788 liquid Substances 0.000 abstract description 7
- 239000002699 waste material Substances 0.000 abstract description 7
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 6
- 239000001301 oxygen Substances 0.000 abstract description 6
- 229910052760 oxygen Inorganic materials 0.000 abstract description 6
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 6
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 6
- 239000012535 impurity Substances 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 230000003749 cleanliness Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 241000883990 Flabellum Species 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Malonic acid Chemical compound OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000004014 plasticizer Substances 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920001225 polyester resin Polymers 0.000 description 1
- 239000004645 polyester resin Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000012209 synthetic fiber Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D50/00—Combinations of methods or devices for separating particles from gases or vapours
- B01D50/20—Combinations of devices covered by groups B01D45/00 and B01D46/00
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D9/00—Crystallisation
- B01D9/02—Crystallisation from solutions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C51/00—Preparation of carboxylic acids or their salts, halides or anhydrides
- C07C51/42—Separation; Purification; Stabilisation; Use of additives
- C07C51/43—Separation; Purification; Stabilisation; Use of additives by change of the physical state, e.g. crystallisation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Crystallography & Structural Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The invention relates to continuous production equipment and a process for refined terephthalic acid, wherein the equipment comprises a crystallization tank, the top end of the front surface of the crystallization tank is communicated with an oxygen delivery pipe, a discharge port of the crystallization tank is communicated with a primary material pump through a pipeline, a discharge port of the primary material pump is communicated with a separation tank through a pipeline, a discharge port of the separation tank is communicated with a secondary material pump through a pipeline, a discharge port of the secondary material pump is communicated with a drying tank through a pipeline, the top end of the right side of the drying tank is communicated with a discharge hopper, the top ends of the crystallization tank, the separation tank and the drying tank are all communicated with exhaust pipes, and one ends of the exhaust pipes, which are far away from the crystallization tank, the separation tank and the drying tank, are communicated with a fixing frame. Through setting up exhaust-gas treatment subassembly, realize quick separation effect to the waste gas that crystallization tank, knockout drum and drying tank roof produced and a little waste liquid that carries to prevent that waste gas from taking place the disorder and building up in crystallization tank, knockout drum and drying tank roof position, improve terephthalic acid's smart treatment effect.
Description
Technical Field
The invention relates to the technical field of terephthalic acid production, in particular to continuous production equipment and process for refined terephthalic acid.
Background
Terephthalic acid, also called p-phthalic acid, is the dicarboxylic acid with the greatest yield, is mainly prepared from paraxylene, is a main raw material for producing polyester, is solid at normal temperature, does not melt under heating, sublimates at 300 ℃ or above, can melt at 425 ℃ if heated in a closed container, is difficult to dissolve in water at normal temperature, and is mainly used for manufacturing synthetic polyester resin, synthetic fiber, plasticizer and the like.
Terephthalic acid is one of the common chemical raw materials, and in the process of fine treatment of terephthalic acid, a continuous device is needed, waste gas can be generated in the production process of terephthalic acid, and a small amount of waste liquid is carried in the waste gas, but the currently used continuous device cannot carry out rapid separation treatment on the waste gas and the waste liquid, so that the waste gas is disordered and accumulated at the upper end of the continuous device, and the fine treatment effect of terephthalic acid is affected.
Disclosure of Invention
The invention aims to solve the defect that the waste gas and the waste liquid cannot be rapidly separated in the prior art, and provides continuous production equipment and a process for refined terephthalic acid.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the utility model provides a continuous production equipment that accurate terephthalic acid was used, includes the crystallization jar, the top intercommunication on crystallization jar right side has the loading hopper, the positive top intercommunication of crystallization jar has the oxygen therapy pipe, the discharge gate of crystallization jar has one-level material pump through the pipeline intercommunication, the discharge gate of one-level material pump has the knockout drum through the pipeline intercommunication, the discharge gate of knockout drum has the second grade material pump through the pipeline intercommunication, the discharge gate of second grade material pump has the drying pot through the pipeline intercommunication, the top intercommunication on drying pot right side has the hopper, the top of crystallization jar, knockout drum and drying pot all communicates there is the blast pipe, the one end intercommunication that crystallization jar, knockout drum and drying pot were kept away from to the blast pipe has the mount, crystallization jar, knockout drum and drying pot top in opposite directions are provided with the exhaust-gas treatment subassembly that uses with blast pipe and mount cooperation.
Preferably, the exhaust-gas treatment subassembly includes the air discharge fan, the air discharge fan passes through branch to be fixed at the inner wall of mount, the one end intercommunication that the blast pipe was kept away from to the mount has honeycomb duct and the other end intercommunication of honeycomb duct has the gas collection frame, the inner chamber fixedly connected with base of gas collection frame and the top rotation of base are connected with the vortex fan that uses with the honeycomb duct cooperation, exhaust hole has all been seted up around the top intercommunication of gas collection frame has aiutage and aiutage, the bottom intercommunication of gas collection frame has the back flow and the other end intercommunication of back flow has the drain pipe.
Preferably, the gas collecting frame adopts the spheroid design, all be connected with around the gas collecting frame bottom with crystallization tank, knockout drum and drying tank fixed fit's support.
Preferably, the fan blades of the exhaust fan and the turbulent fan are in streamline design, and the fan blades of the exhaust fan and the turbulent fan are sprayed with corrosion-resistant paint.
Preferably, the exhaust holes are circumferentially distributed along the central axis of the exhaust barrel, and the opening direction of the exhaust holes is designed in an upward inclined manner along the exhaust barrel.
Preferably, the inner walls of the exhaust pipe, which are close to the crystallization tank, the separation tank and the drying tank, are fixedly connected with a filter screen which is matched with the exhaust fan for use.
The invention also provides a continuous production process for the refined terephthalic acid, and the continuous production equipment for the refined terephthalic acid is adopted for continuous production of the refined terephthalic acid.
Compared with the prior art, the invention has the beneficial effects that:
this continuous production equipment that accurate terephthalic acid was used through setting up exhaust-gas treatment subassembly, by the cooperation of air discharge fan, honeycomb duct, gas collecting frame, base, vortex fan, aiutage, exhaust hole, back flow and drain pipe, realizes quick separation effect to waste gas that crystallization tank, knockout drum and drying tank roof produced and a little waste liquid that carries to prevent that waste gas from taking place the disorder and blocking up in crystallization tank, knockout drum and drying tank roof position, improve the accurate treatment effect of terephthalic acid.
This continuous production equipment that accurate terephthalic acid was used through the support, the whole firm effect of reinforcing gas collection frame to prevent that the gas collection frame from appearing dropping, through corrosion-resistant coating, extension exhaust fan and vortex fan flabellum's life, through the filter screen, filter the impurity granule that gets into in the blast pipe waste gas, improve the cleanliness factor of waste gas.
Drawings
FIG. 1 is a schematic diagram of a continuous production apparatus for refined terephthalic acid according to the present invention;
FIG. 2 is a side view showing the structure of a continuous production apparatus for refined terephthalic acid according to the present invention;
FIG. 3 is a rear view showing the structure of a continuous production apparatus for refined terephthalic acid according to the present invention;
FIG. 4 is a partial cross-sectional view of the structure of an exhaust treatment assembly according to the present invention.
In the figure: 1. a crystallization tank; 2. a hopper; 3. an oxygen therapy tube; 4. a first-stage material pump; 5. a separation tank; 6. a secondary material pump; 7. a drying tank; 8. discharging a hopper; 9. an exhaust pipe; 10. a fixing frame; 11. an exhaust treatment assembly; 111. an exhaust fan; 112. a flow guiding pipe; 113. a gas collecting frame; 114. a base; 115. a turbulent fan; 116. an exhaust pipe; 117. an exhaust hole; 118. a return pipe; 119. a drain pipe; 12. and (5) a filter screen.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Example 1
Referring to figures 1-4, a continuous production device for refined terephthalic acid comprises a crystallization tank 1, wherein the top end on the right side of the crystallization tank 1 is communicated with a charging hopper 2, the front top end of the crystallization tank 1 is communicated with an oxygen delivery pipe 3, the discharge port of the crystallization tank 1 is communicated with a primary material pump 4 through a pipeline, the discharge port of the primary material pump 4 is communicated with a separation tank 5 through a pipeline, the discharge port of the separation tank 5 is communicated with a secondary material pump 6 through a pipeline, the discharge port of the secondary material pump 6 is communicated with a drying tank 7 through a pipeline, the top end on the right side of the drying tank 7 is communicated with a discharge hopper 8, the top ends of the crystallization tank 1, the separation tank 5 and the drying tank 7 are all communicated with an exhaust pipe 9, one end of the exhaust pipe 9 away from the crystallization tank 1, the separation tank 5 and the drying tank 7 is communicated with a fixing frame 10, the top in opposite directions of the crystallization tank 1, the separation tank 5 and the drying tank 7 are provided with the waste gas treatment assembly 11 matched with the exhaust pipe 9 and the fixing frame 10, and the waste gas treatment assembly 11 is matched with the exhaust fan 111, the guide pipe 112, the gas collecting frame 113, the base 114, the turbulent fan 115, the exhaust funnel 116, the exhaust hole 117, the return pipe 118 and the drain pipe 119 to realize the rapid separation effect on waste gas generated at the tank tops of the crystallization tank 1, the separation tank 5 and the drying tank 7 and a small amount of carried waste liquid so as to prevent the waste gas from being disordered and accumulated at the tank top positions of the crystallization tank 1, the separation tank 5 and the drying tank 7 and improve the fine treatment effect of terephthalic acid.
Example two
Improvement on the basis of the first embodiment: the continuous production equipment for refined terephthalic acid comprises a crystallization tank 1, wherein the top end on the right side of the crystallization tank 1 is communicated with a charging hopper 2, the front top end of the crystallization tank 1 is communicated with an oxygen delivery pipe 3, the discharge port of the crystallization tank 1 is communicated with a primary material pump 4 through a pipeline, the discharge port of the primary material pump 4 is communicated with a separation tank 5 through a pipeline, the discharge port of the separation tank 5 is communicated with a secondary material pump 6 through a pipeline, the discharge port of the secondary material pump 6 is communicated with a drying tank 7 through a pipeline, the top end on the right side of the drying tank 7 is communicated with a discharge hopper 8, the top ends of the crystallization tank 1, the separation tank 5 and the drying tank 7 are all communicated with an exhaust pipe 9, one ends of the exhaust pipe 9, which are far away from the crystallization tank 1, the separation tank 5 and the drying tank 7, are communicated with a fixing frame 10, the top ends of the crystallization tank 1, the separation tank 5 and the drying tank 7 are provided with an exhaust gas treatment assembly 11 which is matched with the exhaust pipe 9 and the fixing frame 10, the exhaust gas treatment assembly 11 comprises an exhaust fan 111, the exhaust fan 111 is fixed on the inner wall of a fixing frame 10 through a supporting rod, a filter screen 12 matched with the exhaust fan 111 is fixedly connected on the inner wall of the exhaust pipe 9, which is close to the crystallization tank 1, the separation tank 5 and the drying tank 7, impurity particles in exhaust gas entering the exhaust pipe 9 are filtered, the cleanliness of the exhaust gas is improved, one end of the fixing frame 10, which is far away from the exhaust pipe 9, is communicated with a flow guide pipe 112, the other end of the flow guide pipe 112 is communicated with a gas collecting frame 113, the gas collecting frame 113 adopts a sphere design, the periphery of the bottom of the gas collecting frame 113 is fixedly connected with brackets fixedly matched with the crystallization tank 1, the separation tank 5 and the drying tank 7, the overall stabilizing effect of the gas collecting frame 113 is enhanced, so that the gas collecting frame 113 falls off is prevented, a base 114 is fixedly connected with the inner cavity of the gas collecting frame 113, the top of the base 114 is rotationally connected with a turbulent fan 115 matched with the flow guide pipe 112, the fan blades of the exhaust fan 111 and the turbulent fan 115 are in streamline design, the rotation efficiency of the exhaust fan 111 and the turbulent fan 115 is improved, corrosion-resistant paint is sprayed on the fan blades of the exhaust fan 111 and the turbulent fan 115, the service lives of the fan blades of the exhaust fan 111 and the turbulent fan 115 are prolonged, the top end of the air collecting frame 113 is communicated with an exhaust drum 116, exhaust holes 117 are formed in the periphery of the exhaust drum 116, the exhaust holes 117 are circumferentially distributed along the central axis of the exhaust drum 116, the opening direction of the exhaust holes 117 is in upward inclined design along the exhaust drum 116, exhaust work after turbulent flow is facilitated, waste gas is prevented from being gathered and disturbed in the exhaust drum 116, the bottom end of the air collecting frame 113 is communicated with a return pipe 118, the other end of the return pipe 118 is communicated with a drain pipe 119, and the exhaust pipe 119 are arranged through the exhaust gas treatment assembly 11, and the exhaust pipes 111, 112, the air collecting frame 113, the base 114, the turbulent fan 115, the exhaust drum 116, the exhaust holes 117, the exhaust pipe 118 and the drain pipe 119 are matched, the exhaust gas generated by the tops of the crystallization tank 1, the separation tank 5 and the drying tank 7 and the carried tank are quickly separated, the waste gas is prevented from being disturbed, and the waste gas is well-stopped at the top of the drying tank 7, and the waste gas is prevented from being blocked at the position of the drying tank 7, and the waste gas is well separated from the drying tank, and the waste gas is effectively prevented from being discharged.
In the invention, acetic acid and paraxylene are sequentially injected into a crystallization tank 1 through a charging hopper 2, clean oxygen after external compression is supplied into the crystallization tank 1 through an oxygen delivery pipe 3, the paraxylene and the oxygen are subjected to crystallization reaction under the cooperation of an acetic acid auxiliary agent to form crude terephthalic acid, the crude terephthalic acid is supplied into a separation tank 5 through a pipeline by a primary material pump 4 to be subjected to impurity removal and separation treatment, the purified crude terephthalic acid is supplied into a drying tank 7 through a secondary material pump 6 to be subjected to drying treatment to form refined terephthalic acid, the refined terephthalic acid is taken out by a discharge hopper 8 and discharged, waste gas generated in the processing of the crystallization tank 1, the separation tank 5 and the drying tank 7 is subjected to impurity removal through a filter screen 12 in advance, then reaches three groups of exhaust pipes 9 correspondingly to three groups of fixing frames 10, waste gas collected in the three groups of fixing frames 10 is correspondingly supplied into three flow guide pipes 112 by three groups of exhaust fans 111 and is uniformly converged into a gas collecting frame 113, the waste gas collected by the fans is subjected to rotation support compensation by the base 114, the converged waste gas is subjected to turbulent flow 115 to the exhaust pipe 116, and is discharged through a discharge hopper 8, and the waste gas carried by a small amount of gravity is discharged into a waste liquid container 119 in advance.
The invention also provides a continuous production process for the refined terephthalic acid, and the continuous production equipment for the refined terephthalic acid is adopted for continuous production of the refined terephthalic acid.
The foregoing description is only of the preferred embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art who is skilled in the art to which the present invention pertains will appreciate that equivalents and modifications according to the technical scheme and the inventive concept thereof are included in the scope of the present invention 。
Claims (7)
1. Continuous production equipment for refined terephthalic acid comprises a crystallization tank (1), and is characterized in that: the utility model discloses a waste gas treatment device, including crystallization jar (1), separator (5) and drying tank (7), the top intercommunication on crystallization jar (1) right side has loading hopper (2), positive top intercommunication of crystallization jar (1) has oxygen therapy pipe (3), the discharge gate of crystallization jar (1) has one-level material pump (4) through the pipeline intercommunication, the discharge gate of one-level material pump (4) has separator (5) through the pipeline intercommunication, the discharge gate of separator (5) has second grade material pump (6) through the pipeline intercommunication, the discharge gate of second grade material pump (6) has drying tank (7) through the pipeline intercommunication, the top intercommunication on drying tank (7) right side has loading hopper (8), the top of crystallization jar (1), separator (5) and drying tank (7) all communicates there is blast pipe (9), the one end intercommunication that crystallization jar (1), separator (5) and drying tank (7) are kept away from to blast pipe (9) has mount (10), the top in opposite direction of separator (5) and drying tank (7) is provided with waste gas treatment assembly (11) that use with blast pipe (9) and mount (10).
2. The continuous production equipment for refined terephthalic acid according to claim 1, wherein the exhaust gas treatment assembly (11) comprises an exhaust fan (111), the exhaust fan (111) is fixed on the inner wall of the fixing frame (10) through a supporting rod, one end of the fixing frame (10) far away from the exhaust pipe (9) is communicated with a flow guide pipe (112) and the other end of the flow guide pipe (112) is communicated with a gas collecting frame (113), an inner cavity of the gas collecting frame (113) is fixedly connected with a base (114) and the top of the base (114) is rotationally connected with a turbulent fan (115) matched with the flow guide pipe (112), the top of the gas collecting frame (113) is communicated with an exhaust pipe (116) and exhaust holes (117) are formed in the periphery of the exhaust pipe (116), and the bottom end of the gas collecting frame (113) is communicated with a return pipe (118) and the other end of the return pipe (118) is communicated with a drain pipe (119).
3. The continuous production equipment for refined terephthalic acid according to claim 2, wherein the gas collecting frame (113) adopts a sphere design, and brackets fixedly matched with the crystallization tank (1), the separation tank (5) and the drying tank (7) are fixedly connected to the periphery of the bottom of the gas collecting frame (113).
4. The continuous production equipment for refined terephthalic acid according to claim 2, wherein the blades of the exhaust fan (111) and the turbulent fan (115) are in streamline design, and the blades of the exhaust fan (111) and the turbulent fan (115) are coated with corrosion-resistant paint.
5. The continuous production apparatus for purified terephthalic acid according to claim 2, wherein the exhaust holes (117) are circumferentially distributed along a central axis of the exhaust pipe (116), and an opening direction of the exhaust holes (117) is designed to be inclined upward along the exhaust pipe (116).
6. Continuous production equipment for refined terephthalic acid according to claim 1, wherein the exhaust pipe (9) is close to the inner walls of the crystallization tank (1), the separation tank (5) and the drying tank (7) and is fixedly connected with a filter screen (12) matched with the exhaust fan (111).
7. A continuous production process for purified terephthalic acid, characterized in that the purified terephthalic acid is continuously produced using a continuous production apparatus for purified terephthalic acid according to any one of claims 1 to 6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310359945.1A CN116532060A (en) | 2023-04-06 | 2023-04-06 | Continuous production equipment and process for refined terephthalic acid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310359945.1A CN116532060A (en) | 2023-04-06 | 2023-04-06 | Continuous production equipment and process for refined terephthalic acid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116532060A true CN116532060A (en) | 2023-08-04 |
Family
ID=87446010
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310359945.1A Pending CN116532060A (en) | 2023-04-06 | 2023-04-06 | Continuous production equipment and process for refined terephthalic acid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116532060A (en) |
-
2023
- 2023-04-06 CN CN202310359945.1A patent/CN116532060A/en active Pending
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