CN201372260Y - Catalyst injection device for producing high-density polyethylene with slurry process - Google Patents
Catalyst injection device for producing high-density polyethylene with slurry process Download PDFInfo
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- CN201372260Y CN201372260Y CN200920106030U CN200920106030U CN201372260Y CN 201372260 Y CN201372260 Y CN 201372260Y CN 200920106030 U CN200920106030 U CN 200920106030U CN 200920106030 U CN200920106030 U CN 200920106030U CN 201372260 Y CN201372260 Y CN 201372260Y
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- pipeline
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- catalyst
- injection device
- hexane
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Abstract
A catalyst injection device for producing high-density polyethylene with a slurry process is applied to the continuous production of high-density polyethylene with the slurry process. The catalyst injection device is characterized in that: a liquid inlet of a reactor is connected with a ball valve which is connected with a tee joint through a flange, and other two ends of the tee joint are respectively connected with a hexane injection pipeline and a catalyst injection pipeline through the flange. The ball valve, a one-way valve, a regulating valve, a metering pump and another ball valve are sequentially connected onto the hexane injection pipeline. A needle valve, the one-way valve, the needle valve, the regulating valve and the metering pump are sequentially connected on the catalyst injection pipeline. The catalyst injection device has the effects of shortening the distance between the mixing point of the catalyst and the hexane and the reactor, saving the mixing time, and injecting the catalyst into the hexane pipeline at 45 degrees along the feeding direction. The catalyst injection device reduces the blocking frequency of the catalyst and does not cause parking which affects production.
Description
Technical field
The utility model relates to the successive polymerization production process that slurry method is produced high density polyethylene(HDPE), and particularly a kind of injection device of catalyzer is in a kind of slurry method production polyethylene process, prevents the device of catalyzer injection tube frequent jams.
Background technology
Produce the requirement of high density polyethylene(HDPE) patented technology according to German BASELL company slurry method, the catalyzer and the refined hexane of slurry condition are mixed together injecting reactor.The decanting point of catalyzer is on the refined hexane pipeline, and the catalyzer implant angle is 90 degree.
Consult Fig. 1.The structure of present catalyst injection device is: the fluid inlet at reactor 1 is connected with ball valve 2, and ball valve 2 is connected a ball valve 2 by flange with pipeline.Check valve 5 of ball valve 2 series connection.Be connected with pipeline between check valve 5 and the variable valve 6, variable valve 6 is connected with volume pump 7.The vertical catalyzer that is connected with injects pipeline on the pipeline between check valve 5 and the variable valve 6.Catalyzer injects on the pipeline and is connected with needle type valve 4, check valve 5, variable valve 6 and volume pump 7 in turn.
In normal productive process, owing to might change injecting the hexane process, as when the hexane downgrade that injects, the prepolymerization reaction can take place before entering reactor, cause the hexane pipeline to stop up and the catalyst line obstruction.Reactor does not have catalyst charge, can only stop to carry out pipeline mediation processing, has a strong impact on polyethylene production.
The utility model content
The purpose of this utility model is: provide a kind of slurry method to produce the catalyst injection device of high density polyethylene(HDPE), shorten catalyzer and hexane mixing point to the distance that enters between the reactor, the mixing time that reduces, the catalyzer decanting point is transformed, the catalyzer injection is entered the hexane pipeline for 45 ° along feedstock direction.Reduce the frequency of catalyzer obstruction accident, can not cause the influence of stopping to produce.
The technical solution adopted in the utility model is: slurry method is produced the catalyst injection device of high density polyethylene(HDPE), mainly form by reactor, ball valve, flange, needle type valve, check valve, variable valve, volume pump and pipeline, fluid inlet at reactor is connected with ball valve, it is characterized in that: ball valve connects a threeway by flange, and the other two ends of threeway are connected with hexane respectively by flange and inject pipeline and catalyzer injection pipeline.Hexane injects on the pipeline and is connected with ball valve, check valve, variable valve, volume pump and ball valve in turn.Catalyzer injects on the pipeline and is connected with needle type valve, check valve, needle type valve, variable valve and volume pump in turn.
Described threeway is made up of straight pipe-line and crossing pipeline, and the angle of the medullary ray of straight pipe-line and crossing pipeline is between 40～50 degree.Catalyzer injects pipeline and connects on the crossing pipeline, and promptly the implant angle of catalyzer is between 40～50 degree.
The beneficial effects of the utility model: the utility model slurry method is produced the catalyst injection device of high density polyethylene(HDPE), shorten catalyzer and hexane mixing point to the distance that enters between the reactor, the mixing time that reduces, the catalyzer decanting point is transformed, the catalyzer injection is entered the hexane pipeline for 45 ° along feedstock direction.Reduce the frequency that catalyzer stops up,, a small amount of prepolymerization takes place also can not stop up and influence entering of liquid starting material even the hexane quality has fluctuation.Even pipeline stops up, stop several minutes and tear threeway open and dredge processing, or change a standby threeway.Can not cause the influence of stopping to produce.Save the repair time, reduced production cost.
Description of drawings
Fig. 1 is the catalyst injection device structural representation of original technology.
Fig. 2 is the catalyst injection device structural representation that the utility model slurry method is produced high density polyethylene(HDPE).Arrow among the figure is liquid hexane or liquid catalyst mobile direction.
Among the figure, 1. reactor, 2. ball valve, 3. flange, 4. needle type valve, 5. check valve, 6. variable valve, 7. volume pump.
Embodiment
Embodiment 1: the catalyst injection device of producing high density polyethylene(HDPE) with a slurry method is an example, and the utility model is described in further detail.
Consult Fig. 2.The utility model slurry method is produced the catalyst injection device of high density polyethylene(HDPE), mainly is made up of reactor 1, ball valve 2, flange 3, needle type valve 4, check valve 5, variable valve 6, volume pump 7 and pipeline.The model YQ41H 1 of ball valve 2 " 300LB, the model JPE 1/2 of needle type valve 4 " 6000PSI, the model JPE 1/2 of check valve 5 " 6000PSI, the model FV105011/2 of variable valve 6 " 300LB, the model H2-31 of volume pump 7, pipeline internal diameter are 12.5 millimeters.
Fluid inlet at reactor 1 is connected with a ball valve 2.Ball valve 2 connects a threeway by flange, and the diameter of threeway is 12.5 millimeters.Threeway is made up of straight pipe-line and crossing pipeline diameter, and the angle of the medullary ray of straight pipe-line and crossing pipeline is 45 degree.
Catalyzer injects pipeline and connects on the crossing pipeline, and the implant angle of catalyzer is 45 degree.The other two ends of threeway are connected with a hexane respectively by flange and inject pipeline and a catalyzer injection pipeline.Hexane injects on the pipeline and is connected with a ball valve 2, check valve 5, variable valve 6, volume pump 7 and ball valve 2 in turn.Catalyzer injects on the pipeline and is connected with a needle type valve 4, check valve 5, needle type valve 4, variable valve 6 and volume pump 7 in turn.
Claims (2)
1, a kind of slurry method is produced the catalyst injection device of high density polyethylene(HDPE), mainly by reactor (1), ball valve (2), flange (3), needle type valve (4), check valve (5), variable valve (6), volume pump (7) and pipeline are formed, fluid inlet at reactor (1) is connected with ball valve (2), it is characterized in that: ball valve (2) connects a threeway by flange, the other two ends of threeway are connected with hexane respectively by flange and inject pipeline and catalyzer injection pipeline, hexane injects on the pipeline and is connected with ball valve (2) in turn, check valve (5), variable valve (6), volume pump (7) and ball valve (2), catalyzer inject on the pipeline and are connected with needle type valve (4) in turn, check valve (5), needle type valve (4), variable valve (6) and volume pump (7).
2, slurry method according to claim 1 is produced the catalyst injection device of high density polyethylene(HDPE), it is characterized in that: described threeway is made up of straight pipe-line and crossing pipeline, the angle of the medullary ray of straight pipe-line and crossing pipeline is between 40～50 degree, and catalyzer injects pipeline and connects on the crossing pipeline.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106030U CN201372260Y (en) | 2009-03-04 | 2009-03-04 | Catalyst injection device for producing high-density polyethylene with slurry process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920106030U CN201372260Y (en) | 2009-03-04 | 2009-03-04 | Catalyst injection device for producing high-density polyethylene with slurry process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201372260Y true CN201372260Y (en) | 2009-12-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920106030U Expired - Lifetime CN201372260Y (en) | 2009-03-04 | 2009-03-04 | Catalyst injection device for producing high-density polyethylene with slurry process |
Country Status (1)
| Country | Link |
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| CN (1) | CN201372260Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103038556A (en) * | 2010-07-30 | 2013-04-10 | 道达尔研究技术弗吕公司 | Method for metering a catalyst slurry |
| CN114364456A (en) * | 2020-07-24 | 2022-04-15 | 株式会社Lg化学 | Device for producing oligomers |
| US11512150B2 (en) | 2020-11-17 | 2022-11-29 | Ineos Usa Llc | Polymerization process |
-
2009
- 2009-03-04 CN CN200920106030U patent/CN201372260Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103038556A (en) * | 2010-07-30 | 2013-04-10 | 道达尔研究技术弗吕公司 | Method for metering a catalyst slurry |
| CN103038556B (en) * | 2010-07-30 | 2014-07-30 | 道达尔研究技术弗吕公司 | Method for metering a catalyst slurry |
| CN114364456A (en) * | 2020-07-24 | 2022-04-15 | 株式会社Lg化学 | Device for producing oligomers |
| US11731919B2 (en) | 2020-07-24 | 2023-08-22 | Lg Chem, Ltd. | Apparatus for preparing oligomer |
| US11512150B2 (en) | 2020-11-17 | 2022-11-29 | Ineos Usa Llc | Polymerization process |
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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 |
Granted publication date: 20091230 |
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| CX01 | Expiry of patent term |