CN219462552U - Novel polymerization tower steam condensing system - Google Patents
Novel polymerization tower steam condensing system Download PDFInfo
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- CN219462552U CN219462552U CN202320166188.1U CN202320166188U CN219462552U CN 219462552 U CN219462552 U CN 219462552U CN 202320166188 U CN202320166188 U CN 202320166188U CN 219462552 U CN219462552 U CN 219462552U
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- condenser
- switch valve
- bottle
- pipe
- conveying pipe
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- 238000006116 polymerization reaction Methods 0.000 title claims abstract description 50
- 230000005587 bubbling Effects 0.000 claims abstract description 24
- 239000007788 liquid Substances 0.000 claims description 49
- 230000005494 condensation Effects 0.000 claims description 3
- 238000009833 condensation Methods 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 13
- 239000004677 Nylon Substances 0.000 abstract description 2
- 229920001778 nylon Polymers 0.000 abstract description 2
- 239000002826 coolant Substances 0.000 description 9
- 239000012535 impurity Substances 0.000 description 5
- 238000009825 accumulation Methods 0.000 description 4
- 238000004140 cleaning Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000498 cooling water Substances 0.000 description 2
- JBKVHLHDHHXQEQ-UHFFFAOYSA-N epsilon-caprolactam Chemical compound O=C1CCCCCN1 JBKVHLHDHHXQEQ-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010865 sewage Substances 0.000 description 2
- 229920002292 Nylon 6 Polymers 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Polymerisation Methods In General (AREA)
Abstract
The utility model belongs to the technical field of nylon polymerization production, and provides a novel polymerization tower steam condensing system, which comprises: the device comprises a polymerization tower, a first condenser, a second condenser, a first bubbling bottle, a second bubbling bottle, a first switch valve, a second switch valve, a main switch valve and a three-way pipe; the first switch valve is arranged on the first conveying pipe, the second switch valve is arranged on the second conveying pipe, and the main switch valve is arranged on the third conveying pipe; the water outlet of the first cooler is connected with the water inlet pipe of the first bubbling bottle, and the water outlet of the second cooler is connected with the water inlet pipe of the second bubbling bottle. The utility model has the advantages that: when bubble appears in the bubble bottle, just detect that the condenser that corresponds appears steam heat transfer trouble, set up two condensers that correspond, when detecting that one of them condenser appears steam heat transfer trouble, can switch another condenser and carry out steam heat transfer work through first ooff valve and second ooff valve, when wasing the condenser that appears steam heat transfer trouble, need not to stop the production of polymerization tower, improve production efficiency.
Description
Technical Field
The utility model relates to the technical field of nylon polymerization production, in particular to a novel polymerization tower steam condensing system.
Background
In the polymerization reaction of nylon 6, a large amount of water is separated out, part of the water is converted into steam to be discharged due to the high temperature in the polymerization tower, and the discharged steam is usually mixed with caprolactam, oligomers thereof and the like besides water, so that the steam is usually changed into liquid for sewage treatment after heat exchange between a condenser and a cooling medium for environmental safety and convenient treatment.
Referring to fig. 1, in order to provide a current condensing system for vapor in a polymerization tower, a vapor outlet of the polymerization tower 1 is connected to an air inlet of a condenser 2 through a delivery pipe, and a main switching valve 3 is installed in the delivery pipe, and the condenser 2 has a cooling medium inlet 201 and a cooling medium outlet 202. The polymerization column vapor condensing system has the disadvantages that: only one condenser is arranged, the condenser adopts circulating cooling water as cooling medium to cool down steam, as the cooling water and the steam of the polymerization tower all contain impurities, along with the lapse of service time, the inside of the condenser tends to be scaled up due to the accumulation of the impurities, the heat exchange efficiency is affected, when the condenser has heat exchange failure, the steam is changed into liquid with higher temperature after passing through the condenser to be discharged, even the direct steam is not condensed to be discharged, and when the condenser with the steam heat exchange failure is cleaned, the production of the polymerization tower is required to be stopped, thereby affecting the production efficiency.
Therefore, how to set two condensers, when detecting that one condenser has a steam heat exchange fault, switching the other condenser to perform steam heat exchange work, and when cleaning the condenser with the steam heat exchange fault, without stopping the production of the polymerization tower, is a technical problem to be solved in the prior art.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a novel polymerization tower steam condensing system, wherein two condensers are arranged, when one condenser is detected to have steam heat exchange failure, the other condenser is switched to perform steam heat exchange work, and when the condenser with the steam heat exchange failure is cleaned, the production of the polymerization tower does not need to be stopped.
The utility model is realized in the following way: a novel polymerization column vapor condensing system comprising:
the device comprises a polymerization tower, a first condenser, a second condenser, a first bubbling bottle, a second bubbling bottle, a first switch valve, a second switch valve, a main switch valve and a three-way pipe;
the air inlet of the first condenser is connected with one end of a first conveying pipe, the other end of the first conveying pipe is connected with a first port of the three-way pipe, the air inlet of the second condenser is connected with one end of a second conveying pipe, the other end of the second conveying pipe is connected with a second port of the three-way pipe, the steam outlet of the polymerization tower is connected with one end of a third conveying pipe, and the other end of the third conveying pipe is connected with a third port of the three-way pipe;
the first switch valve is arranged on the first conveying pipe, the second switch valve is arranged on the second conveying pipe, and the main switch valve is arranged on the third conveying pipe;
the first bubbling bottle and the second bubbling bottle comprise a bottle body, a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is fixedly arranged at the top of the bottle body, the liquid outlet pipe is fixedly arranged at the bottom of the bottle body, and the lower end of the liquid inlet pipe is lower than the upper end of the liquid outlet pipe;
the liquid outlet of the first cooler is connected with the water inlet pipe of the first bubbling bottle, and the liquid outlet of the second cooler is connected with the water inlet pipe of the second bubbling bottle.
Further, the first switch valve and the second switch valve are both electric switch valves.
Further, the method further comprises the following steps: the first temperature sensor, the second temperature sensor and the control unit;
the first temperature sensor is arranged in the bottle body of the first bubbling bottle and is also electrically connected with the control unit;
the second temperature sensor is arranged in the bottle body of the second bubbling bottle and is also electrically connected with the control unit;
the control unit is also electrically connected with the first switch valve and the second switch valve.
Further, the control unit is a DCS central control room.
Further, the control unit has a display.
Further, the bottle is a transparent bottle.
The utility model has the advantages that: 1. when bubble appears in the bubble bottle, just detect that the condenser that corresponds appears steam heat transfer trouble, set up two condensers that correspond, when detecting that one of them condenser appears steam heat transfer trouble, can switch another condenser and carry out steam heat transfer work through first ooff valve and second ooff valve, when wasing the condenser that appears steam heat transfer trouble, need not to stop the production of polymerization tower, improve production efficiency. 2. The temperature of the steam condensation liquid in the bubble bottle is monitored in real time through the temperature sensor, and when one condenser has steam heat exchange failure, the other condenser is automatically switched to perform steam heat exchange work.
Drawings
The utility model will be further described with reference to examples of embodiments with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of a structure of a polymerization column vapor condensing system of the background art.
FIG. 2 is a schematic diagram of the structure of the vapor condensing system of the polymerization column of the present utility model.
Fig. 3 is a schematic diagram of the connection of the control unit in the present utility model.
Reference numerals: a polymerization column 1; a condenser 2; a cooling medium inlet 201; a cooling medium outlet 202; a first condenser 21; a first bubble vial 211; a bottle 2111; a liquid inlet pipe 2112; a liquid outlet pipe 2113; a first switching valve 212; a second condenser 22; a second bubble vial 221; a second switching valve 222; a main switching valve 3; a tee 4; a first delivery pipe 41; a second delivery pipe 42; a third conveying pipe 43; a control unit 5; a first temperature sensor 51; a second temperature sensor 52.
Detailed Description
The embodiment of the utility model provides a novel condensing system for steam in a polymerization tower, which aims to realize that when condensers with steam heat exchange faults are cleaned, production of the polymerization tower is not required to be stopped, and when one condenser fails, the other condenser is switched to perform steam heat exchange.
The general idea of the technical scheme in the embodiment of the utility model is as follows:
when the heat exchange operation of the cooler is normal, steam is changed into liquid through the cooler to enter the bubble bottle, liquid is arranged between a liquid inlet pipe and a liquid outlet pipe of the bubble bottle, when the heat exchange operation of the cooler is failed, the temperature of the liquid in the bubble bottle rises, even the steam enters the bubble bottle without condensation, and at the moment, the bubble phenomenon can be seen in the bubble bottle. The working state of the corresponding condenser is detected through the bubbling bottle, when one condenser is detected to have steam heat exchange faults, the other condenser can be switched to perform steam heat exchange work through the first switch valve and the second switch valve, and when the condenser with the steam heat exchange faults is cleaned, production of the polymerization tower is not required to be stopped, so that production efficiency is improved.
In order to better understand the above technical solutions, the following detailed description will refer to the accompanying drawings and specific embodiments.
Referring to fig. 1 to 3, a preferred embodiment of the present utility model.
A novel polymerization column vapor condensing system comprising:
a polymerization column 1, a first condenser 21, a second condenser 22, a first bubble vial 211, a second bubble vial 221, a main switch valve 3, a first switch valve 212, a second switch valve 222, a main switch valve 3 and a three-way pipe 4;
the air inlet of the first condenser 21 is connected with one end of a first conveying pipe 41, the other end of the first conveying pipe 41 is connected with a first port of the three-way pipe 4, the air inlet of the second condenser 22 is connected with one end of a second conveying pipe 42, the other end of the second conveying pipe 42 is connected with a second port of the three-way pipe 4, the steam outlet of the polymerization tower 1 is connected with one end of a third conveying pipe 43, and the other end of the third conveying pipe 43 is connected with a third port of the three-way pipe 4;
the first switch valve 212 is installed on the first conveying pipe 41, the second switch valve 222 is installed on the second conveying pipe 42, and the total switch valve 3 is installed on the third conveying pipe 43;
the first bubbling bottle 211 and the second bubbling bottle 221 each comprise a bottle body 2111, a liquid inlet pipe 2112 and a liquid outlet pipe 2113, wherein the liquid inlet pipe 2112 is fixedly arranged at the top of the bottle body 2111, the liquid outlet pipe 2113 is fixedly arranged at the bottom of the bottle body 2111, and the lower end of the liquid inlet pipe 2112 is lower than the upper end of the liquid outlet pipe 2113;
the water outlet of the first condenser 21 is connected with the water inlet pipe of the first bubble vial 211, and the water outlet of the second condenser 22 is connected with the water inlet pipe of the second bubble vial 221.
In one case of this embodiment, the main switch valve 3 and the first switch valve 212 are both in an open state, the second switch valve 222 is in a closed state, steam generated by the polymerization tower 1 enters the first condenser 21 through the main switch valve 3 and the first switch valve 212, a cooling medium enters the first condenser 21 to exchange heat with the steam, the steam becomes condensed liquid and enters the first bubble bottle 211, the condensed liquid is accumulated at the bottom of the first bubble bottle 211, when reaching the upper end of a liquid outlet pipe, the condensed liquid is discharged from the liquid outlet pipe, the lower end of the liquid outlet pipe is connected with a sewage discharge pipe, and the second condenser 22 is a standby condenser. When the heat exchange efficiency of the first condenser 21 is reduced due to the accumulation of impurities, the steam heat exchange of the first condenser 21 is failed, the steam is changed into liquid with higher temperature to be discharged after passing through the first condenser 21, even the direct steam is not condensed and discharged, at this time, the temperature of the liquid in the first bubble bottle 211 is increased, even bubbles are generated, a worker sees the bubbling condition of the first bubble bottle 211, and then operates to close the first switch valve 212 and operate to open the second switch valve 222, at this time, the steam discharged from the polymerization tower 1 enters the second condenser 22 through the second switch closure, the cooling medium enters the second condenser 22 to exchange heat with the steam, and the steam is changed into condensed liquid to enter the second bubble bottle 221. The worker can clean the first condenser 21 without stopping the production of the polymerization column 1, thereby ensuring the production efficiency. The first condenser 21 is changed into a standby condenser after the cleaning, and when the second condenser 22 is scaled due to the accumulation of impurities and has heat exchange failure, the first condenser 21 is switched to be used.
In another case of this embodiment, the main switching valve 3, the first switching valve 212 and the second switching valve 222 are all opened, and the vapor discharged from the polymerization column 1 is divided into two paths to pass through the first condenser 21 and the second condenser 22, and at this time, condensed liquid is accumulated at the bottoms of the first bubble vial 211 and the second bubble vial 221. When the first bubble bottle 211 has bubble phenomenon, which indicates that the first condenser 21 has heat exchange failure, the worker closes the first switch valve 212, then washes the first condenser 21, at this time, without stopping the production of the polymerization tower 1, all the steam enters the second condenser 22, and after the first condenser 21 is washed, opens the first switch valve 212 again, and resumes the condensing state of the two paths of steam.
The first switch valve 212 and the second switch valve 222 are both electric switch valves.
Further comprises: a first temperature sensor 51, a second temperature sensor 52 and a control unit 5;
the first temperature sensor 51 is installed inside the bottle body of the first bubble bottle 211 and is also electrically connected with the control unit 5;
the second temperature sensor 52 is installed inside the bottle body of the second bubble bottle 221 and is also electrically connected with the control unit 5;
the control unit 5 is also electrically connected to the first switch valve 212 and the second switch valve 222.
The control unit 5 is a DCS central control room; the DCS central control room is a central control room with a distributed control system. The control unit 5 has a display for displaying the temperatures detected by the first temperature sensor 51 and the second temperature sensor 52 and a preset temperature threshold.
The first temperature sensor 51 sends the temperature of the condensed liquid of the first bubble bottle 211 and the temperature of the condensed liquid of the second bubble bottle 221 to the control unit 5, when the temperature of the condensed liquid of the first bubble bottle 211 is detected to rise above the preset threshold value, which indicates that the first condenser 21 has heat exchange failure, the control unit 5 closes the first switch valve 212, opens the second switch valve 222, switches the steam direction to the standby second condenser 22, and cleans the first condenser 21, and in the cleaning process, the production of the polymerization tower 1 does not need to be stopped, thereby avoiding unnecessary loss and waste. Compared with the manual switching of the trend of the steam, the control unit 5, namely the DCS central control room, can switch the trend of the steam automatically in time.
The novel mode of operation of polymerization tower steam condensing system:
the first switch valve 212 is opened, the first condenser 21 is in an operating state, the second switch valve 222 is closed, and the second condenser 22 is used as a standby. When the polymerization tower 1 works, the main switch valve 3 is opened, steam of the polymerization tower 1 enters the first condenser 21 to exchange heat with a cooling medium, becomes condensed liquid and flows to the first bubble bottle 211, when the first condenser 21 is scaled due to accumulation of impurities, the steam heat exchange fails, the steam can directly flow to the first bubble bottle 211 without being cooled, bubbles appear in the first bubble bottle 211, and the liquid temperature of the first bubble bottle 211 rises, when the temperature exceeds the threshold value preset in the DCS central control room, the DCS central control room closes the first switch valve 212, opens the second switch valve 222, and enables the steam of the polymerization tower 1 to flow to the second condenser 22, so that workers can clean the first condenser 21 without stopping production of the polymerization tower 1. When the second condenser 22 has a heat exchange failure, the DCS central control room closes the second on/off valve 222, opens the first on/off valve 212, and flows the vapor of the polymerization column 1 to the first condenser 21, thereby cleaning the second condenser 22. When the polymerization column 1 is finished, the main switching valve 3 is closed.
While specific embodiments of the utility model have been described above, it will be appreciated by those skilled in the art that the specific embodiments described are illustrative only and not intended to limit the scope of the utility model, and that equivalent modifications and variations of the utility model in light of the spirit of the utility model will be covered by the claims of the present utility model.
Claims (6)
1. A novel polymerization column vapor condensing system comprising:
the device comprises a polymerization tower, a first condenser, a second condenser, a first bubbling bottle, a second bubbling bottle, a first switch valve, a second switch valve, a main switch valve and a three-way pipe;
the air inlet of the first condenser is connected with one end of a first conveying pipe, the other end of the first conveying pipe is connected with a first port of the three-way pipe, the air inlet of the second condenser is connected with one end of a second conveying pipe, the other end of the second conveying pipe is connected with a second port of the three-way pipe, the steam outlet of the polymerization tower is connected with one end of a third conveying pipe, and the other end of the third conveying pipe is connected with a third port of the three-way pipe;
the first switch valve is arranged on the first conveying pipe, the second switch valve is arranged on the second conveying pipe, and the main switch valve is arranged on the third conveying pipe;
the first bubbling bottle and the second bubbling bottle comprise a bottle body, a liquid inlet pipe and a liquid outlet pipe, the liquid inlet pipe is fixedly arranged at the top of the bottle body, the liquid outlet pipe is fixedly arranged at the bottom of the bottle body, and the lower end of the liquid inlet pipe is lower than the upper end of the liquid outlet pipe;
the liquid outlet of the first condenser is connected with the liquid inlet pipe of the first bubbling bottle, and the liquid outlet of the second condenser is connected with the liquid inlet pipe of the second bubbling bottle.
2. The novel condensing system of claim 1, wherein said first on-off valve, said second on-off valve, and said main on-off valve are all electrically operated on-off valves.
3. The novel polymerization column vapor condensing system of claim 1, further comprising: the first temperature sensor, the second temperature sensor and the control unit;
the first temperature sensor is arranged in the bottle body of the first bubbling bottle and is also electrically connected with the control unit;
the second temperature sensor is arranged in the bottle body of the second bubbling bottle and is also electrically connected with the control unit;
the control unit is also electrically connected with the first switch valve and the second switch valve.
4. A novel condensing system of polymerization column vapor according to claim 3, characterized in that said control unit is a DCS central control room.
5. A novel condensation system for polymerization column vapors according to claim 3, characterized in that the control unit has a display.
6. The novel condensing system of claim 1, wherein said bottle is a transparent bottle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320166188.1U CN219462552U (en) | 2023-02-08 | 2023-02-08 | Novel polymerization tower steam condensing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320166188.1U CN219462552U (en) | 2023-02-08 | 2023-02-08 | Novel polymerization tower steam condensing system |
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| Publication Number | Publication Date |
|---|---|
| CN219462552U true CN219462552U (en) | 2023-08-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320166188.1U Active CN219462552U (en) | 2023-02-08 | 2023-02-08 | Novel polymerization tower steam condensing system |
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| CN (1) | CN219462552U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781496A (en) * | 2024-02-28 | 2024-03-29 | 江苏盖德冷冻机有限公司 | High-temperature cooling unit for water purification |
-
2023
- 2023-02-08 CN CN202320166188.1U patent/CN219462552U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117781496A (en) * | 2024-02-28 | 2024-03-29 | 江苏盖德冷冻机有限公司 | High-temperature cooling unit for water purification |
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