CN217989775U - Online cleaning system for vacuum jet pump nozzle - Google Patents
Online cleaning system for vacuum jet pump nozzle Download PDFInfo
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- CN217989775U CN217989775U CN202221540923.2U CN202221540923U CN217989775U CN 217989775 U CN217989775 U CN 217989775U CN 202221540923 U CN202221540923 U CN 202221540923U CN 217989775 U CN217989775 U CN 217989775U
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- condenser
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Abstract
The utility model discloses an online cleaning system for a vacuum jet pump nozzle, which comprises an ethylene glycol steam pipeline; a final condensation scraper condenser pipeline connected with the air outlet of the final condensation scraper condenser; the vacuum injection pump is used for spraying the condenser, and the liquid ring pump is arranged at the air outlet end of the spraying condenser; the liquid seal tank is provided with a circulating pipeline of a heat exchanger and a hot glycol cleaning pipeline capable of supplying hot glycol, and an air outlet of the hot glycol cleaning pipeline is connected with a spraying feed inlet pipe of the spraying condenser so as to spray and wash a spray head in the spraying condenser; can spray condenser's the hot feed inlet pipe heat supply ethylene glycol through hot ethylene glycol washing pipeline, to a certain extent make and enter into to spray condenser's hot ethylene glycol by spraying the feed inlet and can spout towards spraying condenser's shower nozzle for shower nozzle under the jam state can be dredged and is left, leads to after avoiding the shower nozzle to block up to need to park the maintenance to equipment, influences the productivity, its structural design is reasonable.
Description
Technical Field
The utility model relates to a polyester production field specifically is an online clean system of vacuum jet pump nozzle.
Background
The polyester production is that the raw materials such as purified terephthalic acid, ethylene glycol and the like are mixed into slurry according to the proportion, and the finished product is produced after the mixture is esterified and polycondensed by a system. The polycondensation stage in the polyester production needs to be carried out in a vacuum environment, and a steam jet pump is used as important air extraction equipment to provide vacuum power for a polycondensation system;
in daily production, a large amount of oligomers are pumped out of a polycondensation reaction kettle along with ethylene glycol and the like by a jet pump, the oligomers can slowly adhere to a nozzle of the jet pump in long-time production operation to cause the blockage of the nozzle, the suction capacity of a vacuum system is influenced after the nozzle is blocked, and the system can be stopped under severe conditions;
therefore, the on-line cleaning system for the nozzle of the vacuum jet pump is provided, which can spray and flush the nozzle at the spray feed inlet in the spray condenser so that the nozzle in a blocked state can be flushed and loosened to a certain extent.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to prior art not enough, provide one kind and have the shower nozzle that sprays feed inlet department to spraying in the condenser and spout towards for the shower nozzle under the jam state can be spouted the online clean system of vacuum jet pump nozzle who breaks down to a certain extent.
The technical problem to be solved by the utility model is realized by the following technical proposal, an on-line cleaning system for the vacuum jet pump nozzle comprises,
an ethylene glycol vapor line;
a final polycondensation scraper condenser pipeline connected with the gas outlet of the final polycondensation scraper condenser;
the ethylene glycol steam pipeline and the final condensation scraper condenser pipeline are respectively connected with an air inlet pipe of the vacuum jet pump;
the air outlet of the vacuum jet pump is connected with the air inlet pipe of the spray condenser, and the air outlet end of the spray condenser is provided with a liquid ring pump;
the spraying discharge port of the spraying condenser is connected with the liquid inlet pipe of the liquid seal tank;
one end of the circulating pipeline is connected with a liquid outlet pipe of the liquid seal tank, and the other end of the circulating pipeline is connected with a spraying feed inlet pipe of the spraying condenser;
the hot glycol cleaning pipeline can supply hot glycol, and the gas outlet of the hot glycol cleaning pipeline is connected with the spraying feed inlet pipe of the spraying condenser so as to spray and flush the spray head in the spraying condenser.
The to-be-solved technical problem of the utility model can also be realized through following technical scheme, above a vacuum jet pump nozzle on-line cleaning system, the circulating pipeline on be equipped with filter, circulating pump and flowmeter according to the liquid flow direction in proper order.
The to-be-solved technical problem of the utility model can also be realized through following technical scheme, above a vacuum ejector pump nozzle online cleaning system, hot ethylene glycol scavenge line on be equipped with the valve.
The utility model discloses the technical problem that solve can also realize through following technical scheme, above a vacuum ejector pump nozzle online cleaning system, the vacuum ejector pump with spray the condenser and all parallelly connected be provided with 3.
Compared with the prior art, the utility model has the advantages that: can be to spraying condenser's the hot feed inlet pipe heat supply ethylene glycol through hot ethylene glycol washing pipeline, to a certain extent make and enter into to spraying condenser's hot ethylene glycol by spraying the feed inlet and can spout towards spraying condenser's shower nozzle, hot ethylene glycol can make the shower nozzle in the spraying condenser scald, can be so that the shower nozzle under the jam state can be dredged and be separated, lead to after avoiding the shower nozzle to block up to need to park the maintenance to equipment, influence the productivity, its structural design is reasonable.
Drawings
FIG. 1 is a flow diagram of an in-line vacuum ejector pump nozzle cleaning system.
In the figure, 1, a glycol steam line; 2. a final polycondensation scraper condenser line; 3. a vacuum jet pump; 4. spraying a condenser; 5. a liquid ring pump; 6. liquid seal groove; 7. a heat exchanger; 8. a recycle line; 9. cleaning the pipeline with hot ethylene glycol; 10. a main valve; 11. a secondary valve.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings so as to facilitate the further understanding of the present invention by those skilled in the art, and do not constitute a limitation to the right thereof.
the ethylene glycol steam pipeline 1 is used for supplying ethylene glycol, and a valve body can be arranged on the ethylene glycol steam pipeline 1;
a final condensation scraper condenser pipeline 2 connected with the air outlet of the final condensation scraper condenser;
the vacuum jet pump 3 is a type which can be selected by a user according to the use requirement in the prior art, and the ethylene glycol steam pipeline 1 and the final condensation scraper condenser pipeline 2 are respectively connected with an air inlet pipe of the vacuum jet pump 3;
the spray condenser 4 is a type which can be selected by a user according to the use requirement in the prior art, the air outlet of the vacuum injection pump 3 is connected with the air inlet pipe of the spray condenser 4, and the air outlet end of the spray condenser 4 is provided with a liquid ring pump 5;
the spraying discharge port of the spraying condenser 4 is connected with the liquid inlet pipe of the liquid seal tank 6;
a circulating pipeline 8 with a heat exchanger 7, wherein one end of the circulating pipeline 8 is connected with a liquid outlet pipe of the liquid seal tank 6, and the other end of the circulating pipeline 8 is connected with a spraying inlet pipe of the spraying condenser 4;
the hot ethylene glycol cleaning pipeline 9 can supply hot ethylene glycol, the temperature of the hot ethylene glycol supplied in the hot ethylene glycol cleaning pipeline 9 can be automatically selected according to the use requirement, specifically, the inlet end of the hot ethylene glycol cleaning pipeline 9 can directly supply materials with a self-provided process tower kettle pump conveying system in a factory, and the air outlet of the hot ethylene glycol cleaning pipeline 9 is connected with the spraying feed inlet pipe of the spraying condenser 4 so as to spray and flush and clean the spray head in the spraying condenser 4.
In embodiment 1, the final condensation scraper condenser, the vacuum jet pump 3, the liquid seal tank 6 and the spray condenser 4 may be a final condensation scraper condenser, a jet pump vacuum unit, a vacuum liquid seal tank and a spray condenser of an ethylene glycol vapor jet pump vacuum unit system in the background art, which are all the prior art, and therefore detailed working principle methods thereof are not repeated herein.
In example 3, the hot glycol purge line 9 may have a main valve 10, and a secondary valve 11 in the line between the main valve and the spray inlet of the spray condenser 4.
The working principle of the vacuum jet pump nozzle on-line cleaning system is as follows:
when the spray condenser 4 and the circulating pump are in a normal pressure working state, and when a pressure instrument and a spray flow instrument of the spray condenser 4 display that the current spray amount is insufficient, the nozzle of the vacuum injection pump 3 can be judged to be blocked and needs to be cleaned;
when the nozzle of the vacuum jet pump 3 needs cleaning, the valve on the ethylene glycol steam pipeline 1 is closed for a short time, the main valve 10 and the secondary valve 11 on the hot ethylene glycol cleaning pipeline 9 are opened, at the moment, hot ethylene glycol enters the spray condenser 4 and is sprayed out by the nozzle, the nozzle is subjected to hot washing to a certain extent, after the pipeline is scalded (about several seconds), the main valve 10 and the secondary valve 11 on the hot ethylene glycol cleaning pipeline 9 are closed, the valve on the ethylene glycol steam pipeline 1 is opened, whether the spraying amount is normal or not is observed, if the requirement is not met, the vacuum system is recovered, and after the vacuum jet pump is normally produced, the operation is repeated.
Claims (4)
1. The utility model provides an online cleaning system of vacuum ejector pump nozzle which characterized in that: comprises the steps of (a) preparing a mixture of a plurality of raw materials,
an ethylene glycol vapor line;
a final polycondensation scraper condenser pipeline connected with the gas outlet of the final polycondensation scraper condenser;
the ethylene glycol steam pipeline and the final condensation scraper condenser pipeline are respectively connected with an air inlet pipe of the vacuum jet pump;
the air outlet of the vacuum injection pump is connected with the air inlet pipe of the spray condenser, and the air outlet end of the spray condenser is provided with a liquid ring pump;
the spraying discharge port of the spraying condenser is connected with the liquid inlet pipe of the liquid seal tank;
one end of the circulating pipeline is connected with a liquid outlet pipe of the liquid seal tank, and the other end of the circulating pipeline is connected with a spraying feed inlet pipe of the spraying condenser;
the hot glycol cleaning pipeline can supply hot glycol, and the gas outlet of the hot glycol cleaning pipeline is connected with the spraying feed inlet pipe of the spraying condenser so as to spray and flush the spray head in the spraying condenser.
2. The vacuum jet pump nozzle on-line cleaning system of claim 1, wherein: the circulating pipeline is sequentially provided with a filter, a circulating pump and a flowmeter according to the flowing direction of liquid.
3. The vacuum jet pump nozzle on-line cleaning system of claim 1, wherein: and a valve is arranged on the hot ethylene glycol cleaning pipeline.
4. The vacuum jet pump nozzle on-line cleaning system of claim 1, wherein: the vacuum jet pump and the spray condenser are connected in parallel to form 3 sets.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221540923.2U CN217989775U (en) | 2022-06-20 | 2022-06-20 | Online cleaning system for vacuum jet pump nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221540923.2U CN217989775U (en) | 2022-06-20 | 2022-06-20 | Online cleaning system for vacuum jet pump nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217989775U true CN217989775U (en) | 2022-12-09 |
Family
ID=84293755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221540923.2U Active CN217989775U (en) | 2022-06-20 | 2022-06-20 | Online cleaning system for vacuum jet pump nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217989775U (en) |
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2022
- 2022-06-20 CN CN202221540923.2U patent/CN217989775U/en active Active
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