CN202131266U - Polyester vacuum system - Google Patents
Polyester vacuum system Download PDFInfo
- Publication number
- CN202131266U CN202131266U CN201120237676U CN201120237676U CN202131266U CN 202131266 U CN202131266 U CN 202131266U CN 201120237676 U CN201120237676 U CN 201120237676U CN 201120237676 U CN201120237676 U CN 201120237676U CN 202131266 U CN202131266 U CN 202131266U
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- China
- Prior art keywords
- motorized valve
- pipeline
- gas phase
- gas
- phase pipeline
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Polyesters Or Polycarbonates (AREA)
Abstract
The utility model relates to a vacuum system, in particular to a polyester vacuum system. The polyester vacuum system comprises a processing tower, a reactor, a condenser and an injection pump, the reactor is connected with the condenser, a gas-phase pipeline and a bypass pipeline which are parallel to each other are arranged between the condenser and the injection pump, the bypass pipeline is provided with a first electric valve, the gas-phase pipeline is provided with a second electric valve and a third electric valve sequentially, the second electric valve is connected with the condenser, the third electric valve is connected with the injection pump, the processing tower is connected with a pump connected with the gas-phase pipeline through a first pipeline, the first pipeline is provided with a fourth electric valve, the processing tower is connected with the gas-phase pipeline through a second pipeline, and the second pipeline is provided with a fifth electric valve. The polyester vacuum system is high in efficiency, fine in energy-saving effect and capable of realizing online cleaning and preventing the gas-phase pipeline from being blocked, and no affection on production is caused. In addition, the technological problem that an existing polyester vacuum system with the gas-phase pipeline easy to be blocked, is oversized and high in cost in the prior art is solved.
Description
Technical field
The utility model relates to a kind of vacuum system, relates in particular to a kind of polyester device four still flow process vacuum systems.
Background technology
Polyester device is under the normal condition of production; Must under vacuum state, just can carry out during chemical reaction in reactor drum; Material in the reactor drum is reacted, just must in time take the gas that reaction produces away, also can carry a spot of material secretly when gas is taken away; In the process of gas from the reactor drum to the squirt pump, the material of gas entrainment is just through the gas phase line clogging of being everlasting.Cause device capbility not increase if stop up not serious meeting; Or often cause during in-line treatment and produce fluctuation; Cause considerable influence to end product quality, run into vacuum system through regular meeting and deal with improperly and cause the underproof great industrial accident of product quality, cause very big financial loss.Can cause when serious the vacuum system gas phase to stop up and can't onlinely dredge if stop up, can only be compelled the handle assembly maintenance mediation gas phase pipeline that stops, this brings millions of financial losses to enterprise.In present open text, Chinese patent is arranged: " PET vaccum system (CN201265507Y) " comprises that well heater, vaporizer, glycol circulation pump, Liquid level adjusting valve, under meter, strainer constitute.Before the glycol circulation pump intake, basket filter is set, reaches the purpose of impurity in the liquid terepthaloyl moietie of effective filtration.But the blockage problem of the gas phase pipeline of against vacuum system still can not get solving.Chinese patent: " a kind of production of polyester polycondensation vacuum system (CN201447442U) "; Comprise the preshrunk vacuum system, gather A line vacuum system and eventually gather B line vacuum system eventually, the import that gathers A line vacuum system and gather the rotary pump with liquid ring of B line vacuum system end with said preshrunk vacuum system, eventually is together in parallel with pipeline.But this equipment is huge, and cost is high.
Summary of the invention
It is a kind of simple in structure that the utility model provides, and can realize on-line cleaning, and the gas phase pipeline is difficult for stopping up, and does not influence production, and efficient is high, and is easy to operate, the PET vaccum system of good energy-conserving effect; Solved the gas phase pipeline easy blocking of the PET vaccum system that exists in the prior art, equipment is huge, the technical problem that cost is high.
The above-mentioned technical problem of the utility model solves through following technical proposals: a kind of PET vaccum system; Comprise process tower, reactor drum, condensing surface and squirt pump; It is characterized in that: described reactor drum is connecting described condensing surface; Between described condensing surface and squirt pump, be provided with the gas phase pipeline and the by-pass line that are parallel to each other, described by-pass line is provided with first motorized valve; Be disposed with second motorized valve and the 3rd motorized valve on the described gas phase pipeline, second motorized valve links to each other with condensing surface, and the 3rd motorized valve links to each other with squirt pump; Be connected with pump on the described process tower, described pump the gas phase pipeline through first pipe connection, and described first pipeline is provided with the 4th motorized valve, and the access point of described first pipeline is between second motorized valve and the 3rd motorized valve; Described process tower on the gas phase pipeline, is provided with the 5th motorized valve through second pipe connection on second pipeline, the described second pipeline access point is between gas phase pipeline second motorized valve and the 3rd motorized valve.Second motorized valve and the 3rd motorized valve are set on the gas phase pipeline; And first motorized valve is being set on the by-pass line, on hot terepthaloyl moietie flow in pipes, is increasing the 4th motorized valve and the 5th motorized valve process tower; Increase motorized valve and by-pass line, make and in the state that squirt pump vacuumizes reactor drum, also can clean the gas phase pipeline.Open first motorized valve on the by-pass line; Close second, third motorized valve on the gas phase pipeline simultaneously; Start the pump of process tower below, open the 4th, the 5th motor-mount pump, utilize the high temperature glycol in the process tower to be injected in the gas phase pipe between second motorized valve and the 3rd motorized valve through pump; Utilize pyritous terepthaloyl moietie to clean up being blocked in ducted material, the terepthaloyl moietie after the cleaning passes back in the process tower with the slag that washes down.And this moment, squirt pump utilized by-pass line that reactor drum is vacuumized, and had realized that on-line cleaning to producing no disturbance, has well prevented the obstruction of gas phase pipeline, and is omnidistance easy to maintenance.Hot terepthaloyl moietie in the process tower is back in the process tower through first pipeline, the 4th motorized valve, gas phase pipeline, the 5th motorized valve, second pipeline.
As preferably, described condensing surface is the scraper plate condensing surface.Be suitable for the condensation of PET vaccum system.
As preferably, described first motorized valve, second motorized valve, the 3rd motorized valve, the 4th motorized valve, the 5th motorized valve are connecting sequence controller.Automatically accomplish on-line cleaning through time variable control, and accuracy is good, efficient is high.
Therefore, a kind of PET vaccum system of the utility model possesses following advantage: realized when producing, carrying out the cleaning of gas phase pipeline, prevented the obstruction of gas phase pipeline; And when flushing pipe,, do not influence production, need not shut down and overhaul producing no disturbance; Improved production efficiency; Utilize the interior hot terepthaloyl moietie of industrial tower to clean and the utilization once more that refluxes, effectively utilized resource, practice thrift cost.
Description of drawings
Fig. 1 is the connection schematic block diagram of a kind of PET vaccum system of the utility model.
Embodiment
Pass through embodiment below, and combine accompanying drawing, do further bright specifically the technical scheme of utility model.
Embodiment:
As shown in Figure 1, a kind of PET vaccum system comprises reactor drum 1, scraper plate condensing surface 2, process tower 3, three grades of squirt pumps 4.Reactor drum 1 is used to carry out the chemical reaction of material; Utilize 4 pairs of reactor drums 1 of three grades of squirt pumps to vacuumize; When taking away, gas also can carry a spot of material secretly; Gas is from the process of reactor drum to three grade squirt pump 4, and the material of gas entrainment just stops up through the gas phase pipeline 5 of being everlasting between 2 to three grades of squirt pumps 4 of scraper plate condensing surface.Reactor drum 1 is connected with scraper plate condensing surface 2, links to each other through gas phase pipeline 5 between scraper plate condensing surface 2 and the three grades of squirt pumps 4, simultaneously, between scraper plate condensing surface 2 and three grades of squirt pumps 4, also is connected with by-pass line 6, and by-pass line 6 walks abreast with gas phase pipeline 5.Three grades of squirt pumps 4 can vacuumize reactor drum through above-mentioned two pipelines.First motorized valve 7 is installed on by-pass line 6, interconnective second motorized valve 8 is installed on gas phase pipeline 5 and the 3rd motorized valve 9, the second motorized valves 8 link to each other with scraper plate condensing surface 2, the 3rd motorized valve 9 links to each other with three grades of squirt pumps 4.Process tower 3 is used for the dried up and terepthaloyl moietie of branch; Process tower 3 is connected with pump 10; Pump 10 is connected on the gas phase pipeline 5 through first pipeline 11, be equipped with on first pipeline 11 the 4th motorized valve 12, the first pipelines 11 at the access point on the gas phase pipeline 5 between second motorized valve 8 and the 3rd motorized valve 9.On gas phase pipeline 5, being connected with process tower 3, the second pipelines 13 through second pipeline 13 is reflux lines, second at the access point that the 5th motorized valve 14, the second pipelines 13 are installed on the pipeline 13 between gas phase pipeline 11 and the 3rd SV 9.Hot terepthaloyl moietie in the process tower 3 cleans gas phase pipeline 5.Hot terepthaloyl moietie injects can only be from injecting between second motorized valve 8 and the 3rd motorized valve 9; Because after second motorized valve 8 and the 3rd motorized valve 9 are closed; The gas phase pipeline 5 of second motorized valve 8 and the 3rd motorized valve 9 seals; Hot terepthaloyl moietie just can only advance to go out from the 5th motorized valve 14 from the 4th motorized valve 12 again, and the flow direction of hot like this terepthaloyl moietie is exactly fixing, thereby reaches the final purpose that hot terepthaloyl moietie cleans gas phase pipe between second motorized valve 8 and the 3rd motorized valve 9.If inject from the place between the scraper plate condensing surface 2 and second motorized valve 8; Hot terepthaloyl moietie just can't clean the pipeline between motorized valve second motorized valve 8 and the 3rd motorized valve 9; And hot terepthaloyl moietie can flow in the scraper plate condensing surface 2, can't pipe blow-through, and influential to producing.First motorized valve 7, second motorized valve 8, the 3rd motorized valve 9, the 4th motorized valve 12, the 5th motorized valve 14 are connecting sequence controller.
During work, the first step: open first motorized valve on the by-pass line, make gas flow to three grades of squirt pumps through by-pass line from the scraper plate condensing surface.Second step: close second motorized valve and the 3rd motorized valve on the gas phase main pipe line, at this moment gas is from the first motorized valve by-pass line, the three grades of squirt pumps that get on, and do not influence taking away of gas in the reactor drum, therefore produces and can normally carry out.The 3rd step: the pump that starts the process tower below; Open the 4th motorized valve and the 5th motorized valve; 180 ℃ high temperature glycol is injected in the gas phase pipe between second motorized valve and the 3rd motorized valve through the pump pressurization; Utilize high temperature glycol to clean up being blocked in ducted material, the terepthaloyl moietie after the cleaning flows in the process tower with the slag that washes down.The 4th step: utilize sequence controller control scavenging period; Clean the time end of setting (as setting 20 minutes), close the 4th motorized valve and the 5th motorized valve, termination of pumping more earlier; Open second motorized valve; Open the 3rd motorized valve again, close first motorized valve on the by-pass line at last, gas is taken away the gas phase pipe between second motorized valve and the 3rd motorized valve under normal circumstances.
Claims (3)
1. PET vaccum system; Comprise process tower, reactor drum, condensing surface and squirt pump; It is characterized in that: described reactor drum is connecting described condensing surface; Between described condensing surface and squirt pump, be provided with the gas phase pipeline and the by-pass line that are parallel to each other, described by-pass line is provided with first motorized valve; Be disposed with second motorized valve and the 3rd motorized valve on the described gas phase pipeline, second motorized valve links to each other with condensing surface, and the 3rd motorized valve links to each other with squirt pump; Be connected with pump on the described process tower, described pump first pipe connection the gas phase pipeline, and described first pipeline is provided with the 4th motorized valve, and the access point of described first pipeline is between second motorized valve and the 3rd motorized valve; Described process tower the gas phase pipeline through second pipe connection, on second pipeline, is provided with the 5th motorized valve, and the access point of described second pipeline is between second motorized valve and the 3rd motorized valve of gas phase pipeline.
2. a kind of PET vaccum system according to claim 1 is characterized in that: described condensing surface is the scraper plate condensing surface.
3. a kind of PET vaccum system according to claim 1 and 2 is characterized in that: described first motorized valve, second motorized valve, the 3rd motorized valve, the 4th motorized valve, the 5th motorized valve are connecting sequence controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120237676U CN202131266U (en) | 2011-07-07 | 2011-07-07 | Polyester vacuum system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201120237676U CN202131266U (en) | 2011-07-07 | 2011-07-07 | Polyester vacuum system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202131266U true CN202131266U (en) | 2012-02-01 |
Family
ID=45520042
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201120237676U Expired - Lifetime CN202131266U (en) | 2011-07-07 | 2011-07-07 | Polyester vacuum system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202131266U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104558572A (en) * | 2013-10-11 | 2015-04-29 | 中国石油化工股份有限公司 | A polyester continuous production system having an online thermal cleaning function |
| CN104607105A (en) * | 2015-01-05 | 2015-05-13 | 福建省鑫东华实业有限公司 | Elution system and elution method of polyethylene terephthalate production equipment |
| CN112718721A (en) * | 2020-12-16 | 2021-04-30 | 安徽神剑新材料股份有限公司 | Device for cleaning polyester resin synthetic pipeline and washing method thereof |
-
2011
- 2011-07-07 CN CN201120237676U patent/CN202131266U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104558572A (en) * | 2013-10-11 | 2015-04-29 | 中国石油化工股份有限公司 | A polyester continuous production system having an online thermal cleaning function |
| CN104558572B (en) * | 2013-10-11 | 2016-05-25 | 中国石化仪征化纤有限责任公司 | There is the polyester continuous production system of online hot cleaning function |
| CN104607105A (en) * | 2015-01-05 | 2015-05-13 | 福建省鑫东华实业有限公司 | Elution system and elution method of polyethylene terephthalate production equipment |
| CN112718721A (en) * | 2020-12-16 | 2021-04-30 | 安徽神剑新材料股份有限公司 | Device for cleaning polyester resin synthetic pipeline and washing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120201 |