CN219848256U - PT acid separation device in refined condensate - Google Patents
PT acid separation device in refined condensate Download PDFInfo
- Publication number
- CN219848256U CN219848256U CN202321287960.1U CN202321287960U CN219848256U CN 219848256 U CN219848256 U CN 219848256U CN 202321287960 U CN202321287960 U CN 202321287960U CN 219848256 U CN219848256 U CN 219848256U
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- China
- Prior art keywords
- condensate
- acid
- static mixer
- decanter
- flash tank
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- 239000002253 acid Substances 0.000 title claims abstract description 34
- 238000000926 separation method Methods 0.000 title claims abstract description 12
- 230000003068 static effect Effects 0.000 claims abstract description 20
- 238000000605 extraction Methods 0.000 claims abstract description 10
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims 5
- 235000011941 Tilia x europaea Nutrition 0.000 claims 5
- 239000004571 lime Substances 0.000 claims 5
- 239000007789 gas Substances 0.000 claims 1
- 239000007792 gaseous phase Substances 0.000 claims 1
- 239000012071 phase Substances 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 7
- 239000007788 liquid Substances 0.000 description 3
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation 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
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to the technical field of PTA processing, in particular to a PT acid separation device in refined condensate, which comprises a condensate flash tank, a static mixer, a PX decanter and a PX heater, wherein a refined condensate input pipe is arranged on the condensate flash tank, the bottom of the condensate flash tank is connected to the static mixer through a pipeline, the input end of the static mixer is connected with the PX input pipe, the output end of the static mixer is connected to the PX decanter through a pipeline, an overflow pipe in the PX decanter is connected to a PX storage tank, and the PX heater is arranged on the PX input pipe. According to the utility model, after the refined condensate is flashed, the condensate containing PT acid and heated PX are mixed in a static mixer and then enter a PX decanter for separation, the PT acid enters a PX storage tank along with the PX, and the refined condensate is conveyed to a PX extraction tower for treatment. The process can realize the separation of PT acid, and the PT acid can not be separated out in the process, so that the equipment is stable and reliable in operation.
Description
Technical Field
The utility model relates to the technical field of PTA processing, in particular to a PT acid separation device in refined condensate.
Background
In the PTA processing process, PT acid is contained in the refined condensate, in order to recycle the PT acid in the condensate, PX is mixed with the refined condensate, and the PT acid in the refined condensate is extracted by the PX, but in the actual use process, the PT acid can be separated out from the PX, so that pipelines and equipment are blocked, and the normal operation of the equipment is affected.
Disclosure of Invention
The utility model aims to solve the technical defects and provides the PT acid separation device in the refined condensate, which can extract PT acid in the refined condensate by using PX and ensure normal, stable and continuous operation of equipment.
The utility model discloses a PT acid separation device in refined condensate, which comprises a condensate flash tank, a static mixer, a PX decanter and a PX heater, wherein a refined condensate input pipe is arranged on the condensate flash tank, the top of the condensate flash tank is connected to a PX extraction tower through a gas phase pipeline, the bottom of the condensate flash tank is connected to the static mixer through a pipeline, the input end of the static mixer is connected with the PX input pipe, the output end of the static mixer is connected to the PX decanter through a pipeline, an overflow pipe in the PX decanter is connected to the PX storage tank, the pipeline at the bottom of the PX decanter is connected to the PX extraction tower through a conveying pump, the PX heater is arranged on the PX input pipe, and the PX heater is connected with a thermal condensate conveying pipe of CE-742.
As optimization, a pressure control valve is arranged on a gas phase pipeline at the top of the condensate flash tank and is used for controlling the pressure in the condensate flash tank.
According to the PT acid separation device in the refined condensate, the refined condensate is flashed, so that the condensate containing PT acid and heated PX are mixed in a static mixer, then the mixture enters a PX decanter for separation, PT acid enters a PX storage tank along with PX, and the refined condensate is conveyed to a PX extraction tower for treatment. The process can realize the separation of PT acid, and PT acid can not be separated out in the process, so that equipment and pipelines can not be blocked, and the equipment is stable and reliable in operation.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
Detailed Description
In order to further describe the technical means and effects adopted by the present utility model for achieving the intended purpose, the following detailed description will refer to the specific implementation, structure, characteristics and effects according to the present utility model with reference to the accompanying drawings and preferred embodiments.
Example 1:
as shown in fig. 1, the utility model discloses a PT acid separating device in refined condensate, which comprises a condensate flash tank 3, a static mixer 5, a PX decanter 6 and a PX heater 12, wherein a refined condensate input pipe 1 is arranged on the condensate flash tank 3, the top of the condensate flash tank 3 is connected to a PX extraction tower 4 through a gas phase pipeline 2, the bottom of the condensate flash tank 3 is connected to the static mixer 5 through a pipeline, the input end of the static mixer 5 is connected with a PX input pipe 11, the output end of the static mixer 5 is connected to the PX decanter 6 through a pipeline, an overflow pipe 8 in the PX decanter 6 is connected to a PX storage tank 7, the pipeline at the bottom of the PX decanter 6 is connected to the PX extraction tower 4 through a delivery pump 9, the PX heater 12 is arranged on the PX input pipe 11, and the PX heater 12 is connected with a hot condensate delivery pipe 13 of CE-742.
The condensate flash tank 3, the static mixer 5, the PX decanter 6 and the PX extraction tower 4 are all existing products, and the specific structure thereof is not limited and will not be described herein. The PX heater 12 is a heat exchanger, the specific form of which is not limited. The CE-742 is also a heat exchanger, and the steam condensate after CE-742 exchanges heat enters the PX heater 12 and is then sent to the condensate cooler 14. Meanwhile, when the PX at normal temperature also passes through the PX heater 12, the PX is heated to a proper temperature, so that after the PX is mixed with the condensate containing the PT acid, the temperature of the mixed condensate is still higher than the dissolution temperature of the PT acid, so that the mixed condensate is still liquid, and the condition that the mixed condensate is separated out in a pipeline to block the pipeline is avoided, and the equipment can continuously and stably run. In the PX decanter 6, PX extracts PT acid, and PX is separated from the condensate in the upper layer, and is transported to the PX storage tank 7 through the overflow pipe 8, while the condensate in the bottom layer is transported to the PX extraction tower 4 through the transport pump 9, for processing and recovering trace PX in the condensate. Meanwhile, after the temperature of PX is increased, the mixing temperature of the PX and the condensate is also relatively increased, so that the PT acid extracting capacity of the PX can be improved, the PT acid in the refined condensate is extracted more thoroughly, the reliable reaction of the subsequent PX and the PT acid after being conveyed to the oxidation reactor 10 is ensured, the utilization rate of the PT acid is improved, and the consumption of the PX in the later oxidation reactor 10 is reduced.
A pressure control valve 15 is arranged on the gas phase pipeline 2 at the top of the condensate flash tank 3 and is used for controlling the pressure in the condensate flash tank 3.
The pressure control valve 15 on the gas phase pipeline 2 can effectively control the pressure in the condensate flash tank 3, when the pressure in the condensate flash tank 3 is increased, the temperature of the refined condensate containing PT acid which is conveyed to the static mixer 5 is also relatively increased, so that the temperature of the mixed liquid is also relatively increased after the refined condensate is mixed with PX input from the outside, and the temperature of the mixed liquid is better ensured to be higher than the precipitation temperature of PT acid, so that the process of extracting PT acid by the PX is more stable, and the running of equipment is continuous and reliable.
Wherein PX is para-xylene and PT acid is p-methylbenzoic acid.
In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; may be a mechanical connection; can be directly connected or indirectly connected through an intermediate medium, and can be in interaction relationship with two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances.
In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
The present utility model is not limited to the preferred embodiments, but is capable of modification and variation in detail, and other modifications and variations can be made by those skilled in the art without departing from the scope of the present utility model.
Claims (2)
1. A PT acid separation device in refined condensate is characterized in that: including lime set flash tank, static mixer, PX decanter, PX heater, be provided with refined lime set input tube on the lime set flash tank, lime set flash tank top is connected to the PX extraction tower through the gaseous phase pipeline, the bottom of lime set flash tank is connected to static mixer through the pipe connection, be connected with the PX input tube at static mixer's input, the output of static mixer is connected to the PX decanter through the pipe connection, overflow pipe in the PX decanter is connected to the PX storage tank, the pipeline of PX decanter bottom is connected to the PX extraction tower through the delivery pump, set up the PX heater on the PX input tube, the PX heater is connected with CE-742's hot condensate conveyer pipe.
2. The PT acid separating device in a purified condensate according to claim 1, wherein: and a pressure control valve is arranged on a gas phase pipeline at the top of the condensate flash tank and used for controlling the pressure in the condensate flash tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321287960.1U CN219848256U (en) | 2023-05-22 | 2023-05-22 | PT acid separation device in refined condensate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321287960.1U CN219848256U (en) | 2023-05-22 | 2023-05-22 | PT acid separation device in refined condensate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219848256U true CN219848256U (en) | 2023-10-20 |
Family
ID=88347568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321287960.1U Active CN219848256U (en) | 2023-05-22 | 2023-05-22 | PT acid separation device in refined condensate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219848256U (en) |
-
2023
- 2023-05-22 CN CN202321287960.1U patent/CN219848256U/en active Active
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