CN210656763U - Injection vacuum system for producing polycarbonate by non-phosgene method - Google Patents
Injection vacuum system for producing polycarbonate by non-phosgene method Download PDFInfo
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- CN210656763U CN210656763U CN201921224657.0U CN201921224657U CN210656763U CN 210656763 U CN210656763 U CN 210656763U CN 201921224657 U CN201921224657 U CN 201921224657U CN 210656763 U CN210656763 U CN 210656763U
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Abstract
The utility model discloses an injection vacuum system of non-phosgene method production polycarbonate, include the first liquid pipeline that links to each other with methyl phenyl carbonate storage tank, first liquid pipeline is connected with the evaporimeter inlet, the evaporimeter gas outlet is connected with vacuum system sprayer inlet end through the air feed pipeline, vacuum system sprayer outlet end is connected with methyl phenyl carbonate storage tank liquid return mouth through the pipeline, diphenyl carbonate apparatus for producing's midbody discharge gate passes through discharge pipeline and is connected with methyl phenyl carbonate storage tank feed inlet, diphenyl carbonate apparatus for producing passes through the pipeline and is connected with polycarbonate apparatus for producing, vacuum system sprayer's bleed end is connected with diphenyl carbonate apparatus for producing evacuation end and polycarbonate apparatus for producing evacuation end respectively through the evacuation pipeline; the utility model discloses the material flow that has significantly reduced sprays the material moreover and can cyclic utilization, plays energy saving and consumption reduction's effect.
Description
Technical Field
The utility model relates to a polycarbonate production technical field specifically indicates a non-phosgene method production polycarbonate's injection vacuum system.
Background
The production process of polycarbonate by non-phosgene method is to produce diphenyl carbonate (DPC) first and then produce Polycarbonate (PC) by using the DPC. The traditional design is that a workshop for producing diphenyl carbonate (DPC) and a workshop for producing Polycarbonate (PC) are designed into two independent workshops, a diphenyl carbonate (DPC) production device and a Polycarbonate (PC) production device are separately and independently operated, the related working procedures cannot be matched, a material transfer pipeline is long, and double-sleeve heating and heat tracing energy consumption are large, so that an intermediate Methyl Phenyl Carbonate (MPC) in the diphenyl carbonate (DPC) production process cannot be used as a fluid material of a multi-stage injection vacuum system of the Polycarbonate (PC).
Disclosure of Invention
An object of the utility model is to overcome above-mentioned not enough, provide a non-phosgene method production polycarbonate's injection vacuum system for intermediate methyl phenyl carbonate can regard as the fluid material of multi-stage injection vacuum system in the polycarbonate production process, in order to reduce the material flow, energy saving and consumption reduction.
The utility model discloses a solve above-mentioned technical problem, the technical scheme who adopts is: a jet vacuum system for producing polycarbonate by a non-phosgene method comprises a first liquid outlet pipeline connected with a methyl phenyl carbonate storage tank, wherein the first liquid outlet pipeline is connected with a liquid inlet of an evaporator, a gas outlet of the evaporator is connected with a gas inlet end of a vacuum system ejector through a gas supply pipeline, a gas outlet end of the vacuum system ejector is connected with a liquid return port of the methyl phenyl carbonate storage tank through a pipeline, an intermediate discharge port of a diphenyl carbonate production device is connected with a feed inlet of the methyl phenyl carbonate storage tank through a discharge pipeline, the diphenyl carbonate production device is connected with a polycarbonate production device through a pipeline, and a gas exhaust end of the vacuum system ejector is respectively connected with a vacuum exhaust end of the diphenyl carbonate production device and a vacuum exhaust end of the polycarbonate production device through a vacuum exhaust pipeline.
Preferably, the first liquid outlet pipeline is provided with a first liquid pump, the methyl phenyl carbonate storage tank is further connected with an intermediate feed inlet of the diphenyl carbonate production device through a second liquid outlet pipeline, and the second liquid outlet pipeline is provided with a second liquid pump.
Preferably, the air outlet end of the ejector of the vacuum system is connected with the air inlet of the condenser through an air outlet pipeline, and the liquid outlet of the condenser is connected with the liquid return port of the methyl phenyl carbonate storage tank through a liquid return pipeline.
Preferably, a vacuum buffer tank is further arranged on the vacuum pumping pipeline.
Preferably, the diphenyl carbonate production facility and the polycarbonate production facility are located in the same production building.
The utility model has the advantages that: methyl Phenyl Carbonate (MPC) rerum natura is very good, is the best power fluid material of vacuum injection, the utility model discloses a vacuum system makes midbody methyl phenyl carbonate can regard as the fluid material of injection vacuum system in the polycarbonate production process, through with diphenyl carbonate apparatus for producing evacuation end and polycarbonate apparatus for producing integrated to same production region, the material flow that has significantly reduced sprays material cyclic utilization moreover, plays energy saving and consumption reduction's effect.
Drawings
FIG. 1 is a schematic diagram of a jet vacuum system for the non-phosgene production of polycarbonate;
in the figure, a methyl phenyl carbonate storage tank 1, a first liquid outlet pipeline 2, a first liquid pump 2.1, a second liquid outlet pipeline 3, a second liquid pump 3.1, an evaporator 4, a gas supply pipeline 5, a vacuum system ejector 6, a diphenyl carbonate production device 7, a discharge pipeline 7.1, a polycarbonate production device 8, a vacuum pumping pipeline 9, a gas outlet pipeline 10, a condenser 11, a liquid return pipeline 12 and a vacuum buffer tank 13.
Detailed Description
The invention is described in further detail below with reference to the figures and the embodiments.
As shown in fig. 1, a jet vacuum system for producing polycarbonate by a non-phosgene method comprises a first liquid outlet pipeline 2 connected with a methyl phenyl carbonate storage tank 1, wherein the first liquid outlet pipeline 2 is connected with a liquid inlet of an evaporator 4, a gas outlet of the evaporator 4 is connected with a gas inlet end of a vacuum system ejector 6 through a gas supply pipeline 5, a gas outlet end of the vacuum system ejector 6 is connected with a liquid return port of the methyl phenyl carbonate storage tank 1 through a pipeline, a discharge port of an intermediate of a diphenyl carbonate production device 7 is connected with a feed port of the methyl phenyl carbonate storage tank 1 through a discharge pipeline 7.1, the diphenyl carbonate production device 7 is connected with a polycarbonate production device 8 through a pipeline, and a gas exhaust end of the vacuum system ejector 6 is respectively connected with a vacuum exhaust end of the diphenyl carbonate production device 7 and a vacuum exhaust end of the polycarbonate production device 8 through a vacuum exhaust pipeline 9.
Preferably, the first liquid outlet pipeline 2 is provided with a first liquid pump 2.1, the methyl phenyl carbonate storage tank 1 is further connected with an intermediate feed inlet of the diphenyl carbonate production device 7 through a second liquid outlet pipeline 3, and the second liquid outlet pipeline 3 is provided with a second liquid pump 3.1.
Preferably, the air outlet end of the vacuum system ejector 6 is connected with the air inlet of a condenser 11 through an air outlet pipeline 10, and the liquid outlet of the condenser 11 is connected with the liquid return port of the methyl phenyl carbonate storage tank 1 through a liquid return pipeline 12.
Preferably, a vacuum buffer tank 13 is further arranged on the vacuum pumping pipeline 9.
Preferably, the diphenyl carbonate production unit 7 and the polycarbonate production unit 8 are located in the same production building. In this embodiment, the production process flow pipelines and related equipment related to the diphenyl carbonate production device 7 and the polycarbonate production device 8 are arranged in a frame of a 4-storey building, so that the material system flow is short, the energy consumption is low, the investment is reduced, and the water, electricity, steam, heat conduction oil, nitrogen, air, cooling water and the like in the public works surround the devices, thereby achieving the effects of saving energy and reducing consumption.
The working principle of the embodiment is as follows:
the method comprises the following steps that an intermediate methyl phenyl carbonate generated in the diphenyl carbonate production process can enter a methyl phenyl carbonate storage tank 1 through a discharge pipeline 7.1 to be stored, part of methyl phenyl carbonate can be pumped to a first liquid outlet pipeline 2 through a first liquid pumping pump 2.1 and then enters an evaporator 4 to be evaporated into a gas state, methyl phenyl carbonate steam is sent to a vacuum system ejector 6 to be ejected, the vacuum pumping pipeline 9 performs a vacuum pumping process on the areas where a diphenyl carbonate production device 7 and a polycarbonate production device 8 are located through a vacuum pumping pipeline 9 during ejection, the negative pressure environment in the production process is kept, the methyl phenyl carbonate steam passing through the vacuum system ejector 6 enters a condenser 11 to be condensed, the condensed liquid enters the methyl phenyl carbonate storage tank 1 through a liquid return pipeline 12 to be recycled, and the other part of liquid in the methyl phenyl carbonate storage tank 1 can be pumped to the diphenyl carbonate storage tank 1 through a second liquid pumping pump 3.1 to be stored The intermediate feeding port of the production apparatus 7 participates in the subsequent reaction, and the diphenyl carbonate produced by the diphenyl carbonate production apparatus 7 is sent to the polycarbonate production apparatus 8 through a pipeline, and then the polycarbonate is produced.
The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.
Claims (5)
1. A jet vacuum system for producing polycarbonate by a non-phosgene method comprises a first liquid outlet pipeline (2) connected with a methyl phenyl carbonate storage tank (1), and is characterized in that: the first liquid outlet pipeline (2) is connected with a liquid inlet of the evaporator (4), a gas outlet of the evaporator (4) is connected with a gas inlet end of the vacuum system ejector (6) through a gas conveying pipeline (5), a gas outlet end of the vacuum system ejector (6) is connected with a liquid return port of the methyl phenyl carbonate storage tank (1) through a pipeline, a midbody discharge port of the diphenyl carbonate production device (7) is connected with a feed port of the methyl phenyl carbonate storage tank (1) through a discharge pipeline (7.1), the diphenyl carbonate production device (7) is connected with the polycarbonate production device (8) through a pipeline, and a gas exhaust end of the vacuum system ejector (6) is connected with a vacuum exhaust end of the diphenyl carbonate production device (7) and a vacuum exhaust end of the polycarbonate production device (8) through a vacuum exhaust pipeline (9).
2. The ejector vacuum system for the non-phosgene process for producing polycarbonate of claim 1, wherein: the first liquid outlet pipeline (2) is provided with a first liquid pump (2.1), the methyl phenyl carbonate storage tank (1) is also connected with an intermediate feed inlet of the diphenyl carbonate production device (7) through a second liquid outlet pipeline (3), and the second liquid outlet pipeline (3) is provided with a second liquid pump (3.1).
3. The ejector vacuum system for the non-phosgene process for producing polycarbonate of claim 1, wherein: the air outlet end of the vacuum system ejector (6) is connected with an air inlet of a condenser (11) through an air outlet pipeline (10), and an liquid outlet of the condenser (11) is connected with a liquid return port of the methyl phenyl carbonate storage tank (1) through a liquid return pipeline (12).
4. The ejector vacuum system for the non-phosgene process for producing polycarbonate of claim 1, wherein: and a vacuum buffer tank (13) is also arranged on the vacuumizing pipeline (9).
5. The ejector vacuum system for the non-phosgene process for producing polycarbonate of claim 1, wherein: the diphenyl carbonate production device (7) and the polycarbonate production device (8) are positioned in the same production building.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224657.0U CN210656763U (en) | 2019-07-31 | 2019-07-31 | Injection vacuum system for producing polycarbonate by non-phosgene method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921224657.0U CN210656763U (en) | 2019-07-31 | 2019-07-31 | Injection vacuum system for producing polycarbonate by non-phosgene method |
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| Publication Number | Publication Date |
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| CN210656763U true CN210656763U (en) | 2020-06-02 |
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| CN201921224657.0U Active CN210656763U (en) | 2019-07-31 | 2019-07-31 | Injection vacuum system for producing polycarbonate by non-phosgene method |
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| CN (1) | CN210656763U (en) |
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2019
- 2019-07-31 CN CN201921224657.0U patent/CN210656763U/en active Active
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