CN213493584U - External micro-interface unit enhanced reaction system for PX production PTA - Google Patents
External micro-interface unit enhanced reaction system for PX production PTA Download PDFInfo
- Publication number
- CN213493584U CN213493584U CN202020445731.8U CN202020445731U CN213493584U CN 213493584 U CN213493584 U CN 213493584U CN 202020445731 U CN202020445731 U CN 202020445731U CN 213493584 U CN213493584 U CN 213493584U
- Authority
- CN
- China
- Prior art keywords
- reactor
- baffle plate
- reaction
- micro
- shell
- 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
- 238000006243 chemical reaction Methods 0.000 title claims abstract description 115
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 239000012535 impurity Substances 0.000 claims abstract description 9
- 239000000463 material Substances 0.000 claims description 27
- 239000002245 particle Substances 0.000 claims description 10
- 239000007788 liquid Substances 0.000 claims description 9
- 239000007787 solid Substances 0.000 claims description 8
- 239000002994 raw material Substances 0.000 claims description 5
- 230000009471 action Effects 0.000 claims description 3
- 230000005484 gravity Effects 0.000 claims description 3
- 239000000126 substance Substances 0.000 claims description 3
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 abstract description 42
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 238000007086 side reaction Methods 0.000 abstract description 9
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical compound CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 52
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 35
- LPNBBFKOUUSUDB-UHFFFAOYSA-N p-toluic acid Chemical compound CC1=CC=C(C(O)=O)C=C1 LPNBBFKOUUSUDB-UHFFFAOYSA-N 0.000 description 18
- GOUHYARYYWKXHS-UHFFFAOYSA-N 4-formylbenzoic acid Chemical compound OC(=O)C1=CC=C(C=O)C=C1 GOUHYARYYWKXHS-UHFFFAOYSA-N 0.000 description 14
- 239000007791 liquid phase Substances 0.000 description 10
- 239000000047 product Substances 0.000 description 9
- 239000002904 solvent Substances 0.000 description 9
- 238000007254 oxidation reaction Methods 0.000 description 7
- 239000000376 reactant Substances 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- FXLOVSHXALFLKQ-UHFFFAOYSA-N p-tolualdehyde Chemical compound CC1=CC=C(C=O)C=C1 FXLOVSHXALFLKQ-UHFFFAOYSA-N 0.000 description 6
- 239000003054 catalyst Substances 0.000 description 5
- 239000000839 emulsion Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- BMYNFMYTOJXKLE-UHFFFAOYSA-N 3-azaniumyl-2-hydroxypropanoate Chemical compound NCC(O)C(O)=O BMYNFMYTOJXKLE-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 239000007795 chemical reaction product Substances 0.000 description 2
- 229940011182 cobalt acetate Drugs 0.000 description 2
- QAHREYKOYSIQPH-UHFFFAOYSA-L cobalt(II) acetate Chemical compound [Co+2].CC([O-])=O.CC([O-])=O QAHREYKOYSIQPH-UHFFFAOYSA-L 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229940071125 manganese acetate Drugs 0.000 description 2
- UOGMEBQRZBEZQT-UHFFFAOYSA-L manganese(2+);diacetate Chemical compound [Mn+2].CC([O-])=O.CC([O-])=O UOGMEBQRZBEZQT-UHFFFAOYSA-L 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- HJUGFYREWKUQJT-UHFFFAOYSA-N tetrabromomethane Chemical compound BrC(Br)(Br)Br HJUGFYREWKUQJT-UHFFFAOYSA-N 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 239000013064 chemical raw material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000002427 irreversible effect Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- -1 paraxylene PX Chemical compound 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
Images
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides a reaction system is reinforceed to external little interface unit of PX production PTA, this system includes: the reactor, the first micro-interface generator and the second micro-interface generator; wherein, the reactor includes that shell, feed inlet, first fender board, second keep off the fender board and part set up the outside circulation heat transfer device of shell, one side inner wall of shell with be first reaction zone between the first fender board, be first overflow area between first fender board and the second fender board, first overflow area with first reaction zone intercommunication is between the second fender board and the opposite side inner wall of shell for the second overflow area, and the bottom of reactor is the second reaction zone. The utility model discloses it is big to have solved effectively among the prior art acetic acid consumption, and the energy consumption is high, is accompanied with a large amount of side reactions simultaneously, and impurity content is high, the unable problem that obtains the assurance of product quality.
Description
Technical Field
The utility model relates to a chemical industry technical field particularly, relates to an external little interface unit of PX production PTA reinforces reaction system.
Background
TA (terephthalic acid) is an important chemical raw material, generally PX (p-xylene) is used as a raw material, acetic acid is used as a solvent, cobalt acetate, manganese acetate and hydrobromic acid (or tetrabromomethane) are used as catalysts, and TA (terephthalic acid) is prepared by oxidation with oxygen in the air at a certain temperature and pressure, and mainly comprises 4 steps, wherein p-xylene (PX) → p-Tolualdehyde (TALD) → p-toluic acid (p-TA) → p-carboxybenzaldehyde (4-CBA) → Terephthalic Acid (TA), wherein all 4 steps are irreversible reactions, and the reaction process is very complex.
In the prior art, four oxidation reaction steps in the PX oxidation process are all performed in the same reactor, however, the former two reaction steps need to use acetic acid as a solvent, high temperature and high pressure are not suitable for being adopted, a mixed reaction process is adopted in the prior art, different conditions are not given for different reactions, so that the consumption of acetic acid is high, the energy consumption is high, a large number of side reactions are accompanied, the impurity content is high, and the product quality cannot be guaranteed.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a reaction system is reinforceed to external micro-interface unit of PX production PTA aims at solving current PX production PTA in-process acetic acid consumption and is big, and the energy consumption is high, is accompanied with a large amount of side reactions simultaneously, and impurity content is high, and product quality can't obtain the problem of guaranteeing.
The utility model provides an external micro-interface unit intensified reaction system for producing PTA by PX, which comprises a reactor, a first micro-interface generator and a second micro-interface generator; wherein the content of the first and second substances,
the reactor comprises a shell, a feed inlet, a first baffle plate, a second baffle plate and a circulating heat exchange device, wherein part of the circulating heat exchange device is arranged outside the shell, two sides of the first baffle plate are connected to the inner side wall of the reactor, the top end of the first baffle plate is lower than the liquid level of the reactor, and the bottom end of the first baffle plate is higher than the feed inlet; the two sides of the second baffle plate are connected to the inner side wall of the reactor, the top end of the second baffle plate is lower than or equal to the top end of the first baffle plate, the bottom end of the second baffle plate is higher than the feed inlet, and the bottom end of the second baffle plate is connected to the inner side wall of the shell in a closed manner;
a first reaction zone is arranged between the inner wall of one side of the shell and the first baffle plate, a first overflow zone is arranged between the first baffle plate and the second baffle plate, the first overflow zone is communicated with the first reaction zone, a second overflow zone is arranged between the second baffle plate and the inner wall of the other side of the shell, and a second reaction zone is arranged at the bottom of the reactor; in the reaction process, the reaction material in the first reaction area overflows into the first overflow area, wherein the catalyst particles fall into the first overflow area under the action of self gravity, and the reaction material in the first overflow area after the catalyst particles are removed overflows into the second overflow area.
First little interface generator respectively with the feed inlet with circulation heat transfer device connects, the setting of second little interface generator is in second reaction zone bottom, first little interface generator with the second is little interface generator all is used for breaking the raw materials air into the microbubble.
Further, in the external micro-interface unit reinforced reaction system for producing PTA by PX, the bottom of the first baffle plate is provided with a bend angle, and the bend angle bends towards the direction of the second baffle plate so as to prevent solid particles from falling into the first overflow area due to upward airflow at the bottom of the reactor.
Further, in the external micro-interface unit enhanced reaction system for producing PTA by PX, the first micro-interface generator and the second micro-interface generator are both pneumatic micro-interface generators.
Further, in the external micro-interface unit enhanced reaction system for producing PTA by PX, the circulating heat exchange device is provided with at least one circulating pump.
Further, in the external micro-interface unit strengthening reaction system for producing PTA by PX, a first wave-proof grating and a second wave-proof grating are arranged in the reactor, the first wave-proof grating is arranged at a position lower than the top height of the first baffle plate, and the second wave-proof grating is arranged at a position lower than the position of the feed inlet.
Further, in the external micro-interface unit reinforced reaction system for producing PTA by PX, a filter screen is further arranged above the inside of the reactor to prevent impurities in the first reaction zone from entering the top of the reactor.
Further, in the external micro-interface unit enhanced reaction system for producing PTA by PX, a tail gas outlet is arranged at the top of the reactor, and a product outlet is arranged at the bottom of the reactor.
Compared with the prior art, the beneficial effects of the utility model reside in that:
the utility model provides an external micro-interface unit of PX production PTA reinforces reaction system, adopt the reaction process of sectional type, set up reactor inside into first reaction zone, the second reaction zone, first overflow district and second overflow district, it gives different reaction conditions to different reaction stages to have realized giving in same reactor, the problem that the acetic acid solvent can not bear the high pressure of high temperature in the preceding two reaction steps has been solved, and the solvent of utilizing water as p-TA oxidation reaction, it is big to have solved the acetic acid consumption among the prior art effectively, the energy consumption is high, simultaneously along with a large amount of side reactions, the impurity content is high, product quality can't obtain the problem of guaranteeing.
Further, the utility model provides a reaction system is reinforceed to external micro-interface unit of PX production PTA through set up the micro-interface generator bottom feed inlet and reactor, carries out the breakage to the air, makes its breakage be the microbubble, forms the emulsion with the liquid phase material, has increased the mass transfer area between air and the liquid phase material effectively, reduces liquid film thickness, reduces the mass transfer resistance, and then has reduced the energy consumption effectively, has promoted reaction efficiency.
Further, the utility model provides an external micro-interface unit of PX production PTA reinforces reaction system, through setting up circulation heat transfer device, the in-process effective control that the reaction goes on the temperature in the reaction process, the degree of consistency of mixing between inside each reaction material of reactor has been ensured simultaneously, each reactant can be abundant participate in the reaction, and then greatly promoted the utilization ratio of reactant, prevented simultaneously because of the uneven emergence that causes the side reaction of local temperature, the quality of result has been promoted to a certain extent.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 is a schematic structural diagram of an external micro-interface unit enhanced reaction system for producing PTA by PX according to an embodiment of the present invention.
In the figure: 10 is a shell, 11 is a first reaction zone, 12 is a second reaction zone, 13 is a first baffle, 14 is a second baffle, 15 is a first overflow zone, 16 is a second overflow zone, 17 is a first micro-interface generator, 18 is a second micro-interface generator, 19 is a first wave-proof grille, 20 is a second wave-proof grille, 21 is a filter screen and 22 is a feed inlet.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. It should be noted that, in the present invention, the embodiments and features of the embodiments may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.
Referring to fig. 1, an external micro-interface unit enhanced reaction system for PX production of PTA according to an embodiment of the present invention includes: a reactor, a first micro-interface generator 17 and a second micro-interface generator 18; wherein, the reactor includes: the reactor comprises a shell 10, a feed inlet 22, a first baffle plate 13, a second baffle plate 14 and a circulating heat exchange device, wherein part of the circulating heat exchange device is arranged outside the shell 10, two sides of the first baffle plate 13 are connected to the inner side wall of the reactor, the top end of the first baffle plate 13 is lower than the liquid level of the reactor, and the bottom end of the first baffle plate 13 is higher than the position of an inlet material 21; two sides of the second baffle plate 14 are connected to the inner side wall of the reactor, the top end of the second baffle plate 14 is lower than or equal to the top end of the first baffle plate 13, the bottom end of the second baffle plate 14 is higher than the feed port 22, and the bottom end of the second baffle plate 14 is connected to the inner side wall of the shell 10 in a closed manner;
a first reaction zone 11 is arranged between the inner wall of one side of the shell 10 and the first baffle 13, the first reaction zone 11 is a reaction zone for converting p-xylene into p-tolualdehyde, converting p-tolualdehyde into p-toluic acid, and converting p-toluic acid into p-carboxybenzaldehyde, a first overflow zone 15 is arranged between the first baffle 13 and the second baffle 14, and the first overflow zone 15 is communicated with the first reaction zone 11; a second overflow area 16 is formed between the second baffle plate 14 and the inner wall of the other side of the housing 10, the bottom of the reactor is a second reactor 12, and the second reaction area 12 is a reaction area for converting the p-carboxybenzaldehyde into terephthalic acid. During the reaction process, the reaction material in the first reaction area 11 overflows into the first overflow area 15, and the reaction material in the first overflow area 15 after solid particles are removed overflows into the second overflow area 16; the liquid phase material flow in the second overflow area 16 forms a circulating material flow through a circulating pipeline on the circulating heat exchange device, the circulating material flow is used for effectively controlling the temperature in the reaction process, simultaneously, the mixing uniformity among all the reactant materials in the reactor is ensured, all the reactants can fully participate in the reaction, the utilization rate of the reactants is greatly improved, meanwhile, the occurrence of side reactions caused by uneven local temperature is prevented, and the quality of the product is improved to a certain extent.
In addition, the top end of the reactor is also provided with a tail gas outlet, the tail gas comprises acetic acid and water, the tail gas enters a subsequent tail gas treatment unit, the separated acetic acid can be recycled, and the enterprise cost is saved. The bottom of the reactor is also provided with a product outlet for taking out the reaction product terephthalic acid, unreacted paraxylene PX, solvent, catalyst, by-products and the like, and finally the reaction product enters a subsequent separation and refining section.
It can be understood, the utility model discloses in adopt the reaction technology of sectional type, set up reactor inside into first reaction zone, the second reaction zone, first overflow district and second overflow district, different reaction conditions have been given to different reaction stages in same reactor to the realization, the problem that the acetic acid solvent can not bear high temperature and high pressure in the first two reaction steps has been solved, and the solvent of utilizing water as p-TA oxidation reaction, it is big to have solved the acetic acid consumption among the prior art effectively, the energy consumption is high, simultaneously along with a large amount of side reactions, the impurity content is high, product quality can't obtain the problem of guaranteeing.
In this embodiment, the first micro-interface generator 17 is connected to the feeding port 22 and the circulating heat exchanger, the second micro-interface generator 18 is disposed at the bottom of the second reaction zone 12, and both the first micro-interface generator 17 and the second micro-interface generator 18 are pneumatic micro-interface generators, and are used to break air into micro-bubbles before entering the reactor, so as to form an emulsion with the liquid phase material, thereby effectively increasing the mass transfer area between air and the liquid phase material, reducing the thickness of the liquid film, and reducing the mass transfer resistance, thereby effectively reducing the energy consumption and improving the reaction efficiency. The specific structure of the micro-interfacial surface generator is disclosed in the prior patent of the present invention, such as the patent with the publication number 106215730a, the core of the micro-interfacial surface generator is the bubble breaking, which is not described in detail. The reaction mechanism and control method of the micro-interface generator are disclosed in the prior patent CN107563051B, and are not described in detail herein. It can be understood that, the utility model discloses in through set up the micro-interface generator in each reaction zone of reactor inside, break at each reaction zone inside to the air, make its breakage be the microbubble, form the emulsion with the liquid phase material, increased the mass transfer area between air and the liquid phase material effectively, reduce liquid film thickness, reduce the mass transfer resistance, and then reduced the energy consumption effectively, promoted reaction efficiency.
Preferably, at least one circulating pump is arranged on the circulating heat exchange device of the reactor, and the number of the circulating pumps has no specific requirement and can be added at corresponding positions as required. Install a plurality of circulating pumps multiplicable circulation power additional for heat exchange efficiency is higher, and the heat transfer is more even.
In this embodiment, a first wave-proof grating 19 and a second wave-proof grating 20 are further arranged inside the reactor, the first wave-proof grating 19 is arranged at a position lower than the top height of the first baffle 13, the second wave-proof grating 20 is arranged at a position lower than the feed inlet 22, and the first wave-proof grating 19 is used for converting violent fully-mixed flow at the upper part of the first reaction zone 11 into plug flow and then overflowing the plug flow to prevent solid particles from entering the second overflow zone 16; the second wave-resisting grid 20 is used for converting the fully mixed flow of the first reaction zone 11 into the plug flow and then enters the second reaction zone 12.
In this embodiment, a filter screen 21 is further disposed above the interior of the reactor to prevent impurities in the first reaction zone 11 from entering the top of the reactor and affecting subsequent tail gas treatment.
Please refer to fig. 1, the working process of the external micro-interface unit enhanced reaction system for PX production PTA in this embodiment is:
firstly, a raw material mixture comprising p-xylene, acetic acid, a catalyst (cobalt acetate, manganese acetate, hydrobromic acid) and the like enters a first micro-interface generator 17, air is simultaneously introduced into the first micro-interface generator 17 and crushed into micro-bubbles to be mixed and emulsified with the raw material mixture, the contact area between the air and a liquid-phase reaction material is effectively increased, the emulsified liquid enters a first reaction zone 11 to carry out the first three-step reaction, namely, p-xylene is converted into p-tolualdehyde, p-tolualdehyde is converted into p-toluic acid, and p-toluic acid is converted into p-carboxybenzaldehyde, and unreacted air leaves a liquid level and passes through a filter screen 21 to rise above the reactor;
along with the continuous progress of the reaction in the first reaction zone 11, the reaction materials in the reaction process pass through a first wave-proof grating 19, wherein solid particles fall into the first overflow zone 15 under the action of self gravity, the reaction materials in the first overflow zone 15 after the solid particles are removed overflow into a second overflow zone 16, the reaction materials in the second overflow zone 16 enter a circulating pipeline of the circulating heat exchange device to form a circulating material flow, and the circulating material flow is used for controlling the temperature in the reaction process;
the p-carboxybenzaldehyde generated in the first reaction zone 11 enters the second reaction zone 12 through a second wave-proof grating 20 arranged at the bottom of the reactor, and air is crushed into micro-bubbles from a second micro-interface generator 18 and then enters the second reaction zone 12 to perform oxidation reaction with the p-carboxybenzaldehyde to generate a product terephthalic acid.
It can obviously be reachd, the utility model discloses in adopt the reaction technology of sectional type, set up reactor inside into first reaction zone, the second reaction zone, first overflow district and second overflow district, different reaction conditions have been given to different reaction stages in same reactor to the realization, the problem that the acetic acid solvent can not bear the high pressure of high temperature in the first two reaction steps has been solved, and the solvent of utilizing water as p-TA oxidation reaction, it is big to have solved the acetic acid consumption among the prior art effectively, the energy consumption is high, simultaneously along with a large amount of side reactions, the impurity content is high, product quality can't obtain the problem of guaranteeing.
Further, through set up the micro-interface generator in feed inlet and reactor bottom, the air is broken, makes its breakage be the microbubble, forms the emulsion with the liquid phase material, has increased the mass transfer area between air and the liquid phase material effectively, reduces liquid film thickness, reduces the mass transfer resistance, and then has reduced the energy consumption effectively, has promoted reaction efficiency.
Further, through setting up circulation heat transfer device, the in-process temperature of effectively having controlled among the reaction process that the reaction goes on has ensured the degree of consistency of mixing simultaneously between each inside reaction material of reactor, has ensured the participation reaction that each reactant can be abundant, and then has greatly promoted the utilization ratio of reactant, has prevented simultaneously because of the uneven emergence that causes the side reaction of local temperature, has promoted the quality of result to a certain extent.
It will be apparent to those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (7)
1. An external micro-interface unit reinforced reaction system for producing PTA by PX is characterized by comprising: the reactor, the first micro-interface generator and the second micro-interface generator; wherein the content of the first and second substances,
the reactor comprises a shell, a feed inlet, a first baffle plate, a second baffle plate and a circulating heat exchange device, wherein part of the circulating heat exchange device is arranged outside the shell, two sides of the first baffle plate are connected to the inner side wall of the reactor, the top end of the first baffle plate is lower than the liquid level of the reactor, and the bottom end of the first baffle plate is higher than the feed inlet; the two sides of the second baffle plate are connected to the inner side wall of the reactor, the top end of the second baffle plate is lower than or equal to the top end of the first baffle plate, the bottom end of the second baffle plate is higher than the feed inlet, and the bottom end of the second baffle plate is connected to the inner side wall of the shell in a closed manner;
a first reaction area is arranged between the inner wall of one side of the shell and the first baffle plate, a first overflow area is arranged between the first baffle plate and the second baffle plate, and the first overflow area is communicated with the first reaction area; a second overflow area is arranged between the second baffle plate and the inner wall of the other side of the shell, and the bottom of the reactor is a second reaction area; in the reaction process, the reaction material in the first reaction area overflows into the first overflow area, wherein the solid particles fall into the first overflow area under the action of self gravity, and the reaction material in the first overflow area after the solid particles are removed overflows into the second overflow area;
first little interface generator respectively with the feed inlet with circulation heat transfer device connects, the setting of second little interface generator is in second reaction zone bottom, first little interface generator with the second is little interface generator all is used for breaking the raw materials air into the microbubble.
2. The system of claim 1, wherein the bottom of the first baffle has a bend angle, and the bend angle is bent toward the second baffle to prevent solid particles from falling into the first overflow area due to the upward flow of the bottom gas.
3. The external micro-interface unit enhanced reaction system for PTA production by PX of claim 1, wherein said first and second micro-interface generators are pneumatic micro-interface generators.
4. The external micro-interface unit enhanced reaction system for PTA production in claim 1, wherein the circulating heat exchange device is provided with at least one circulating pump.
5. The external micro-interface unit enhanced reaction system for PTA production in accordance with any one of claims 1 to 4, wherein the reactor is provided with a first wave-proof grating and a second wave-proof grating inside, the first wave-proof grating is provided at a position lower than the top height of the first baffle plate, and the second wave-proof grating is provided at a position lower than the feed inlet position.
6. The external micro-interface unit enhanced reaction system for PTA production in accordance with any one of claims 1 to 4, wherein a filter screen is further disposed above the inside of the reactor to prevent impurities in the inside of the first reaction zone from entering the top of the reactor.
7. The external micro-interface unit enhanced reaction system for PTA production in accordance with any one of claims 1 to 4, wherein the top of the reactor is provided with a tail gas outlet and the bottom of the reactor is provided with a product outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445731.8U CN213493584U (en) | 2020-03-31 | 2020-03-31 | External micro-interface unit enhanced reaction system for PX production PTA |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020445731.8U CN213493584U (en) | 2020-03-31 | 2020-03-31 | External micro-interface unit enhanced reaction system for PX production PTA |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213493584U true CN213493584U (en) | 2021-06-22 |
Family
ID=76378501
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020445731.8U Active CN213493584U (en) | 2020-03-31 | 2020-03-31 | External micro-interface unit enhanced reaction system for PX production PTA |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213493584U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111569799A (en) * | 2020-03-31 | 2020-08-25 | 南京延长反应技术研究院有限公司 | External micro-interface unit enhanced reaction system and process for producing PTA (pure terephthalic acid) by PX (para-xylene) |
-
2020
- 2020-03-31 CN CN202020445731.8U patent/CN213493584U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111569799A (en) * | 2020-03-31 | 2020-08-25 | 南京延长反应技术研究院有限公司 | External micro-interface unit enhanced reaction system and process for producing PTA (pure terephthalic acid) by PX (para-xylene) |
| CN111569799B (en) * | 2020-03-31 | 2023-03-10 | 南京延长反应技术研究院有限公司 | External micro-interface unit enhanced reaction system and process for producing PTA (pure terephthalic acid) by PX (para-xylene) |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US11628415B2 (en) | Built-in micro interfacial enhanced reaction system and process for PTA production with PX | |
| JP7433584B2 (en) | Built-in micro-interfacial oxidation system and method for producing terephthalic acid from paraxylene | |
| CN101531588B (en) | The manufacture method of a kind of new pure terephthalic acid | |
| CN213493584U (en) | External micro-interface unit enhanced reaction system for PX production PTA | |
| CN111574345A (en) | Intelligent strengthening reaction system and process for built-in micro-interface unit for producing PTA (purified terephthalic acid) by PX (para-xylene) | |
| CN205995420U (en) | A kind of bubble-liquid two-phase jet reactor and bubble-liquid two-phase jet reaction system | |
| CN109806816A (en) | A kind of chlorination reaction device of continuous round-robin method production | |
| CN111569799B (en) | External micro-interface unit enhanced reaction system and process for producing PTA (pure terephthalic acid) by PX (para-xylene) | |
| CN111569788B (en) | External micro-interface oxidation system and method for preparing terephthalic acid from p-xylene | |
| CN1706793A (en) | Esterification reactor | |
| US5277878A (en) | Reactor for heterogeneous-phase reactions | |
| CN115624950A (en) | Continuous production device and continuous production line of polymer polyol | |
| CN111569814B (en) | External micro-interface unit enhanced oxidation system for PX production PTA | |
| CN213493739U (en) | External micro-interface unit enhanced oxidation system for PX production PTA | |
| CN213824704U (en) | Built-in micro-interface unit enhanced reaction system for PX production PTA | |
| CN104387258A (en) | Chloroacetic acid production method and chlorination reactor | |
| CN213493580U (en) | Intelligent enhanced reaction system of built-in micro-interface unit for PX production PTA | |
| CN114984888B (en) | Circulation reactor system for continuous esterification for producing plasticizer | |
| CN104478698A (en) | Method for continuously producing stearoyl acid chloride | |
| CN212357099U (en) | Built-in micro-interface oxidation system for preparing terephthalic acid from p-xylene | |
| CN220345773U (en) | Methyl methacrylate acylation reaction feeding structure | |
| CN220878863U (en) | Preparation system of phenol acetone | |
| CN117942895A (en) | Butanol device reactor gas-liquid mixing reaction system | |
| JPH10316614A (en) | Production of aromatic polycarboxylic acid | |
| PL156353B1 (en) | Multisectional horizontal reactor for oxidation of oxygen derivatives of cyclohexane with nitric acid |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |