CN214597293U - DPC recovery tower of polycarbonate device - Google Patents
DPC recovery tower of polycarbonate device Download PDFInfo
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- CN214597293U CN214597293U CN202022736892.5U CN202022736892U CN214597293U CN 214597293 U CN214597293 U CN 214597293U CN 202022736892 U CN202022736892 U CN 202022736892U CN 214597293 U CN214597293 U CN 214597293U
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- recovery tower
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Abstract
The utility model discloses a DPC recovery tower of a polycarbonate device, which comprises a DPC recovery tower, a heat exchanger, a reflux tank, a pump and a DPC lateral line extraction tank; the top of the DPC recovery tower is connected with a heat exchanger, the heat exchanger is connected with a reflux tank, one side below the reflux tank is connected with the DPC recovery tower, and the other side below the reflux tank is connected with a pump; the DPC side line extraction tank is arranged on one side of the DPC recovery tower and is connected with the DPC recovery tower; a liquid receiving disc is arranged in the DPC recovery tower; the liquid receiving disc is arranged below the joint of the reflux tank and the DPC recovery tower and is arranged on one side of the DPC recovery tower and the DPC side line extraction tank. The utility model ensures that DPC and light components do not need to go to the rectifying tower for rectification, and the device reaches DPC use standard, thereby reducing energy consumption, having short processing time and higher efficiency and energy saving; control points and operating points are reduced, and the risk of errors is reduced.
Description
Technical Field
The utility model relates to a DPC retrieves tower, concretely relates to DPC of polycarbonate device retrieves tower.
Background
The DPC recovery tower of the polycarbonate device is used for recovering DPC in a mixed solution of phenol, DPC and other impurities, and the recovered DPC is used as a raw material again, so the cleanness of the recovered DPC directly influences the final polycarbonate product index;
as shown in fig. 1, the apparatus comprises a DPC recovery column 11, a heat exchanger 12, a reflux drum 13, a pump 14, and a DPC rectification column 15; the waste liquid containing DPC enters a DPC recovery tower, heavy components with boiling points higher than that of DPC are separated from the tower bottom, DPC and light components with boiling points lower than that of DPC are separated from the tower top, and materials discharged from the tower top contain impurities such as phenol besides DPC, so the materials ejected out of the tower must be sent back to a DPC rectifying tower for further rectification and can be reused as raw materials; the separation method needs two times of rectification, and has the advantages of long time consumption, high energy consumption and more process control points.
Disclosure of Invention
The utility model aims to solve the technical problems that DPC and light components do not need to go to a rectifying tower for rectification, and the device reaches DPC use standard, reduces energy consumption, has short processing time and is more efficient and energy-saving; control points and operating points are reduced, and the risk of errors is reduced.
The utility model discloses the DPC recovery tower of polycarbonate device is realized through following technical scheme: comprises a DPC recovery tower, a heat exchanger, a reflux tank, a pump and a DPC side draw-off tank;
the top of the DPC recovery tower is connected with a heat exchanger, the heat exchanger is connected with a reflux tank, one side below the reflux tank is connected with the DPC recovery tower, and the other side below the reflux tank is connected with a pump; the DPC side line extraction tank is arranged on one side of the DPC recovery tower and is connected with the DPC recovery tower; a liquid receiving disc is arranged in the DPC recovery tower; the liquid receiving disc is arranged below the joint of the reflux tank and the DPC recovery tower and is arranged on one side of the DPC recovery tower and the DPC side line extraction tank.
As a preferred technical scheme, a DPC waste liquid pipeline inlet is arranged at the other side of the DPC recovery tower, a recombination incineration pipeline outlet is arranged at the bottom of the DPC recovery tower, and a vacuumizing pipeline is arranged at the other side above the reflux tank; the other side of the pump is provided with a light group incineration pipeline outlet, and DPC recovery liquid is supplied to each user through a DPC lateral line extraction tank.
As a preferred technical scheme, the DPC recovery tower and the heat exchanger, the heat exchanger and the reflux tank, the reflux tank and the DPC recovery tower, and the DPC recovery tower and the DPC side line extraction tank are connected through pipelines.
The utility model has the advantages that: the utility model ensures that DPC and light components do not need to go to the rectifying tower for rectification, and the device reaches DPC use standard, thereby reducing energy consumption, having short processing time and higher efficiency and energy saving; control points and operating points are reduced, and the risk of errors is reduced.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic view of a connection structure of a conventional DPC recovery tower;
fig. 2 is a schematic view of the connection structure of the present invention.
Detailed Description
All of the features disclosed in this specification, or all of the steps in any method or process so disclosed, may be combined in any combination, except combinations of features and/or steps that are mutually exclusive.
Any feature disclosed in this specification (including any accompanying claims, abstract and drawings), may be replaced by alternative features serving equivalent or similar purposes, unless expressly stated otherwise. That is, unless expressly stated otherwise, each feature is only an example of a generic series of equivalent or similar features.
In the description of the present invention, it is to be understood that the terms "one end", "the other end", "the outside", "upper", "inside", "horizontal", "coaxial", "central", "end", "length", "outer end", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.
Furthermore, in the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
The use of terms herein such as "upper," "above," "lower," "below," and the like in describing relative spatial positions is for the purpose of facilitating description to describe one element or feature's relationship to another element or feature as illustrated in the figures. The spatially relative positional terms may be intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if the device in the figures is turned over, elements described as "below" or "beneath" other elements or features would then be oriented "above" the other elements or features. Thus, the exemplary term "below" can encompass both an orientation of above and below. The device may be otherwise oriented and the spatially relative descriptors used herein interpreted accordingly.
In the present invention, unless otherwise explicitly specified or limited, the terms "set", "coupled", "connected", "penetrating", "plugging", and the like are to be understood in a broad sense, and may be, for example, fixedly connected, detachably connected, or integrated; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
As shown in fig. 2, the DPC recovery tower of the polycarbonate plant of the present invention comprises a DPC recovery tower 1, a heat exchanger 2, a reflux tank 3, a pump 4, and a DPC side draw tank 5;
the top of the DPC recovery tower 1 is connected with a heat exchanger 2, the heat exchanger 2 is connected with a reflux tank 3, one side of the lower part of the reflux tank 3 is connected with the DPC recovery tower 1, and the other side of the lower part of the reflux tank 3 is connected with a pump 4; the DPC side line extraction tank 5 is arranged on one side of the DPC recovery tower 1 and is connected with the DPC recovery tower 1; a liquid receiving disc 6 is arranged in the DPC recovery tower 1; the liquid receiving disc 6 is arranged below the joint of the reflux tank 3 and the DPC recovery tower 1, is arranged at one side of the DPC recovery tower 1 and the DPC lateral line extraction tank 5, and the DPC collected by the reflux tank flows back to the liquid receiving disc 6 in the DPC recovery tower 1 for collection and is extracted by the DPC lateral line extraction tank 5.
In the embodiment, a DPC waste liquid pipeline inlet 7 is arranged at the other side of the DPC recovery tower 1, DPC waste liquid enters the DPC recovery tower 1 through the DPC waste liquid pipeline inlet 7, a recombination incineration pipeline outlet 8 is arranged at the bottom of the DPC recovery tower 1, and a vacuum-pumping pipeline 9 is arranged at the other side above the reflux tank 3; the other side of the pump 4 is provided with a light group incineration pipeline outlet 10, and DPC recovery liquid is supplied to each user through a DPC lateral line extraction tank 5.
In this embodiment, the DPC recovery column 1 and the heat exchanger 2, the heat exchanger 2 and the reflux tank 3, the reflux tank 3 and the DPC recovery column 1, and the DPC recovery column 1 and the DPC side draw tank 5 are all connected by pipes.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that are not thought of through the creative work should be covered within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the protection scope defined by the claims.
Claims (3)
1. A DPC recovery column for a polycarbonate plant, characterized by: comprises a DPC recovery tower (1), a heat exchanger (2), a reflux tank (3), a pump (4) and a DPC lateral line extraction tank (5);
the DPC recovery tower (1) is connected with a heat exchanger (2) at the tower top, the heat exchanger (2) is connected with a reflux tank (3), one side below the reflux tank (3) is connected with the DPC recovery tower (1), and the other side below the reflux tank (3) is connected with a pump (4); the DPC side line extraction tank (5) is arranged on one side of the DPC recovery tower (1) and is connected with the DPC recovery tower (1); a liquid receiving disc (6) is arranged in the DPC recovery tower (1); the liquid receiving disc (6) is arranged below the joint of the reflux tank (3) and the DPC recovery tower (1) and is arranged on one side of the DPC recovery tower (1) and the DPC side line extraction tank (5).
2. The DPC recovery column of the polycarbonate plant of claim 1, wherein: a DPC waste liquid pipeline inlet (7) is formed in the other side of the DPC recovery tower (1), a recombination incineration pipeline outlet (8) is formed in the bottom of the DPC recovery tower (1), and a vacuum pumping pipeline (9) is formed in the other side above the reflux tank (3); the other side of the pump (4) is provided with a light group incineration pipeline outlet (10), and DPC recovery liquid is supplied to each user through a DPC lateral line extraction tank (5).
3. The DPC recovery column of the polycarbonate plant of claim 1, wherein: the DPC recovery tower (1) and the heat exchanger (2), the heat exchanger (2) and the reflux tank (3), the reflux tank (3) and the DPC recovery tower (1), and the DPC recovery tower (1) and the DPC side line extraction tank (5) are connected through pipelines.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022736892.5U CN214597293U (en) | 2020-11-23 | 2020-11-23 | DPC recovery tower of polycarbonate device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022736892.5U CN214597293U (en) | 2020-11-23 | 2020-11-23 | DPC recovery tower of polycarbonate device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214597293U true CN214597293U (en) | 2021-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022736892.5U Active CN214597293U (en) | 2020-11-23 | 2020-11-23 | DPC recovery tower of polycarbonate device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214597293U (en) |
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2020
- 2020-11-23 CN CN202022736892.5U patent/CN214597293U/en active Active
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