CN105561883A - Online switching feeding system of loop reactor - Google Patents
Online switching feeding system of loop reactor Download PDFInfo
- Publication number
- CN105561883A CN105561883A CN201510953043.6A CN201510953043A CN105561883A CN 105561883 A CN105561883 A CN 105561883A CN 201510953043 A CN201510953043 A CN 201510953043A CN 105561883 A CN105561883 A CN 105561883A
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- CN
- China
- Prior art keywords
- loop reactor
- pipe reactor
- annular
- valve
- pipeline
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/008—Feed or outlet control devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/001—Feed or outlet devices as such, e.g. feeding tubes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J4/00—Feed or outlet devices; Feed or outlet control devices
- B01J4/02—Feed or outlet devices; Feed or outlet control devices for feeding measured, i.e. prescribed quantities of reagents
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2204/00—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices
- B01J2204/002—Aspects relating to feed or outlet devices; Regulating devices for feed or outlet devices the feeding side being of particular interest
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The invention belongs to the technical field of the improvement of polyethylene production equipment, and in particular belongs to the technical field of the improvement of a loop reactor. The invention particularly relates to an online switching feeding system of the loop reactor. The online switching feeding system of the loop reactor comprises a loop reactor and a feeding header disposed on the loop reactor, wherein a flow control valve is arranged on the feeding header, a three-way valve is arranged on the feeding header and behind the flow control valve, the first way of the three-way valve is communicated with the flow control valve, the second way of the three-way valve is communicated with the loop reactor, and the third way thereof is connected with a high-pressure solvent delivery pipe mechanism. According to the online switching feeding system of the loop reactor, the active polymer powder is separated from ethylene and hexane-1, such that the active center capable of initiating polymerization does not contact with monomers and comonomers in a feeding process, and finally, the purpose of effectively preventing the feeding pipe from blockage can be achieved and thus the device is operated stably.
Description
Technical field
The present invention relates to polyethylene production equipment technical field of improvement, especially the structure technical field of improvement of annular-pipe reactor, particularly the online feed switched system of a kind of annular-pipe reactor.
Background technology
Under prior art, Belgian Ineos company low pressure slurry process is generally adopted for polyethylene production, both can produce and unimodally also can produce double-peak high-density polytene (HDPE) product.The process units of this company comprises raw material supply and refined unit, catalyst activation unit, catalyst feed and reaction member, powder degassed and supply unit, solvent recovery unit, extruding pelletization unit, pellet homogenizing and supply unit and public work and auxiliary equipment.
The annular-pipe reactor used in the reaction cell, what it adopted is a feed header, and owing to being with activated polymer powder containing a large amount of in high pressure solvent, through being everlasting feed header knot wall, once blocking, process of need stopping.Again because high pressure solvent feed pump suction line only has the online filter screen that a precision is lower, do not have the effect of the activated polymer powders of high-precision filtration band, can not realize switching cleaning online.
Summary of the invention
In order to solve the problem of prior art, the invention provides the online feed switched system of a kind of annular-pipe reactor, activated for band polymer powder achieves with ethene and hexene-1 and is separated by it, can make the activated centre of initiated polymerization not contact in the process of charging with monomer and comonomer, finally reach the object effectively preventing feed header from blocking, make device stable operation.
The technical solution adopted in the present invention is as follows:
The online feed switched system of a kind of annular-pipe reactor, comprise the feed header that annular-pipe reactor and annular-pipe reactor are arranged, described feed header is provided with flow control valve, the feed header at flow control valve rear is provided with triple valve, the described triple valve first via is communicated with flow control valve, annular-pipe reactor described in second tunnel is communicated with, the 3rd tunnel is connected with high pressure solvent transfer pipeline mechanism.
High pressure solvent transfer pipeline mechanism comprises the pipeline of connecting ring pipe reactor spare interface, described pipeline is arranged plunger valve and switch valve, and described switch valve operates control by control system.
Pipeline is arranged pipeline pressure and measure display unit, described pipeline pressure is measured display unit and is operated control by control system.
The beneficial effect that technical scheme provided by the invention is brought is:
The present invention enters pipeline by increasing high pressure solvent, is separated by high pressure solvent with combined feed collector.Namely make high pressure solvent directly be connected with reactor without feed header, realize the direct charging of high pressure solvent.
Its advantage is:
1, can effectively prevent from the activated fine powder of the band in high pressure solvent from entering in feed header to continue to react with ethene.
2, high pressure solvent feeding line is realized for subsequent use.
3, high pressure solvent charging siding and main feeding line can switch online.
4, can feed header be effectively avoided to block after improving, the stability that intensifier runs.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of the online feed switched system of a kind of annular-pipe reactor of the present invention.
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, embodiment of the present invention is described further in detail.
Embodiment one
As shown in Figure 1, the online feed switched system of a kind of annular-pipe reactor, comprise the feed header 1 that annular-pipe reactor and annular-pipe reactor are arranged, described feed header 1 is provided with flow control valve 2, the feed header 1 at flow control valve 2 rear is provided with triple valve 3, described triple valve 3 first via is communicated with the annular-pipe reactor described in the connection of flow control valve 2, second tunnel, and the 3rd tunnel is connected with high pressure solvent transfer pipeline mechanism.
In the present embodiment, high pressure solvent transfer pipeline mechanism comprises the pipeline 4 of connecting ring pipe reactor spare interface, described pipeline 4 is arranged plunger valve 5 and switch valve 6, and described switch valve 6 operates control by control system, realizes the automatic control of switch.
Embodiment 2:
In order to realize the pressure measxurement of pipeline 4 inner high voltage solvent, and feed back to control system in time, in the present embodiment, pipeline 4 arranges pipeline pressure and measures display unit 7, described pipeline pressure is measured display unit and is operated control by control system.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (3)
1. the online feed switched system of annular-pipe reactor, comprise the feed header that annular-pipe reactor and annular-pipe reactor are arranged, described feed header is provided with flow control valve, it is characterized in that, the feed header at described flow control valve rear is provided with triple valve, the described triple valve first via is communicated with flow control valve, and the annular-pipe reactor described in the second tunnel is communicated with, the 3rd tunnel is connected with high pressure solvent transfer pipeline mechanism.
2. the online feed switched system of a kind of annular-pipe reactor according to claim 1, it is characterized in that, described high pressure solvent transfer pipeline mechanism comprises the pipeline of connecting ring pipe reactor spare interface, described pipeline is arranged plunger valve and switch valve, described switch valve operates control by control system.
3. the online feed switched system of a kind of annular-pipe reactor according to claim 2, is characterized in that, described pipeline is arranged pipeline pressure and measure display unit, described pipeline pressure is measured display unit and operated control by control system.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510953043.6A CN105561883A (en) | 2015-12-17 | 2015-12-17 | Online switching feeding system of loop reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510953043.6A CN105561883A (en) | 2015-12-17 | 2015-12-17 | Online switching feeding system of loop reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105561883A true CN105561883A (en) | 2016-05-11 |
Family
ID=55872842
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510953043.6A Pending CN105561883A (en) | 2015-12-17 | 2015-12-17 | Online switching feeding system of loop reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105561883A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107117647A (en) * | 2017-05-22 | 2017-09-01 | 南京工程学院 | A kind of device for being used in lead-containing compounds purify ceruse |
| CN108017732A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | For the pre-polymerization material distribution device and distribution method of olefinic polymerization and application |
| CN108017733A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | For the catalyst feed distributor and distribution method of olefinic polymerization and application |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005044872A1 (en) * | 2003-11-03 | 2005-05-19 | Chevron Phillips Chemical Company Lp | Process and apparatus for separating polymer solids hydrocarbon fluids and purge gas |
| CN1688613A (en) * | 2002-09-13 | 2005-10-26 | 切夫里昂菲利普化学有限责任公司 | Loop reactor apparatus and polymerization processes with multiple feed points for olefins and catalysts |
| CN202393635U (en) * | 2011-12-06 | 2012-08-22 | 中国石油化工股份有限公司 | Fluid magnetization test device |
| CN103602655A (en) * | 2013-10-21 | 2014-02-26 | 东南大学 | Mercapto-modified titanium dioxide nanofiber immobilized enzyme, preparation method thereof, and application of immobilized enzyme to 1,3-propylene glycol synthesis |
| CN203683441U (en) * | 2013-12-27 | 2014-07-02 | 中国石油天然气股份有限公司吉林石化分公司 | Improved online switching system for producing singlet and/or doublet polyethylene by adopting slurry process |
-
2015
- 2015-12-17 CN CN201510953043.6A patent/CN105561883A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1688613A (en) * | 2002-09-13 | 2005-10-26 | 切夫里昂菲利普化学有限责任公司 | Loop reactor apparatus and polymerization processes with multiple feed points for olefins and catalysts |
| WO2005044872A1 (en) * | 2003-11-03 | 2005-05-19 | Chevron Phillips Chemical Company Lp | Process and apparatus for separating polymer solids hydrocarbon fluids and purge gas |
| CN202393635U (en) * | 2011-12-06 | 2012-08-22 | 中国石油化工股份有限公司 | Fluid magnetization test device |
| CN103602655A (en) * | 2013-10-21 | 2014-02-26 | 东南大学 | Mercapto-modified titanium dioxide nanofiber immobilized enzyme, preparation method thereof, and application of immobilized enzyme to 1,3-propylene glycol synthesis |
| CN203683441U (en) * | 2013-12-27 | 2014-07-02 | 中国石油天然气股份有限公司吉林石化分公司 | Improved online switching system for producing singlet and/or doublet polyethylene by adopting slurry process |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108017732A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | For the pre-polymerization material distribution device and distribution method of olefinic polymerization and application |
| CN108017733A (en) * | 2016-10-31 | 2018-05-11 | 中国石油化工股份有限公司 | For the catalyst feed distributor and distribution method of olefinic polymerization and application |
| CN108017733B (en) * | 2016-10-31 | 2020-07-21 | 中国石油化工股份有限公司 | Catalyst material distribution device for olefin polymerization, distribution method and application |
| CN108017732B (en) * | 2016-10-31 | 2020-07-24 | 中国石油化工股份有限公司 | Pre-polymerization material distribution device for olefin polymerization, distribution method and application |
| CN107117647A (en) * | 2017-05-22 | 2017-09-01 | 南京工程学院 | A kind of device for being used in lead-containing compounds purify ceruse |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20180315 Address after: 124021 Hongqi Street, Shuangtaizi District, Panjin, Liaoning Applicant after: Northern Huajin Formosan Union Chemical Corporation Address before: 124021 Hongqi Street, Shuangtaizi District, Liaoning, China, No. 482, No. Applicant before: North Hua Jin Chemical Industry Group Co., Ltd |
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160511 |