CN102451646A - Quantitative injection device - Google Patents
Quantitative injection device Download PDFInfo
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- CN102451646A CN102451646A CN2010105200190A CN201010520019A CN102451646A CN 102451646 A CN102451646 A CN 102451646A CN 2010105200190 A CN2010105200190 A CN 2010105200190A CN 201010520019 A CN201010520019 A CN 201010520019A CN 102451646 A CN102451646 A CN 102451646A
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- injection device
- quantitative injection
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Abstract
The invention provides a quantitative injection device which comprises a slurry tank (2), a slurry reversing unit (22) and a circulating pump (4); the slurry reversing unit (22) comprises a two-pathway valve (1) which is provided with a valve seat (14) and a valve core (15) rotatably disposed on the valve seat (14); a first inlet (19), a first outlet (20), a second inlet (17) and a second outlet (18) are disposed on the valve seat (14); the first inlet (19) and the first outlet (20) are communicated with the slurry tank (2) respectively through a pipeline; the circulating pump (4) is disposed on a pipeline between the first inlet (19) and the slurry tank (2); the valve core (15) is provided with a tunnel (16); by rotating the valve core (15), the first inlet (19) is communicated with the first outlet (20) through the tunnel (16), or the second inlet (17) is communicated with the second outlet (18) through the tunnel (16). The quantitative injection device provided by the invention can realize the simple and quantitative injection of catalysts.
Description
Technical field
The present invention relates to a kind of quantitative injection device.
Background technology
Each catalyst is perfect and ripe from researching and developing constantly, all need carry out a large amount of small-sized polymerization evaluation experimentals.As everyone knows; When carrying out small-sized polymerization experiment; Catalyst consumption is generally measured with the milligram level, so the accurate weighing of trace catalyst and in reactor, to shift safely be an important link that guarantees small-sized polymerization evaluation experimental reliability and stability.To with a kind of catalyst; No matter being in the separate unit reactor, repeatedly to test, still in many reactors, experimentizing simultaneously, all is at present weighing and transfers of being accomplished trace catalyst by manual work; This process is very loaded down with trivial details; And whenever once test all and will repeat this process, not only influence the efficient of experiment, and the human error of any one link all can have influence on the accuracy of experimental result.
Summary of the invention
The objective of the invention is to when use is carried out small-sized polymerization experiment with a kind of catalyst; Because all are weighing and transfers of being accomplished trace catalyst by manual work, process is loaded down with trivial details, conventional efficient is low; And easily because human error influences the problem of experimental result accuracy; Provide a kind of weighing simply accurate, can reduce the interference of human factor effectively, improve the quantitative injection device of conventional efficient simultaneously greatly experimental result.
Quantitative injection device provided by the invention comprises serum pot, slurries reversing unit and circulating pump; Said slurries reversing unit comprises two access valve; This two access valve has valve seat and is arranged on the inner spool of valve seat rotationally; Said valve seat is provided with first inlet, first outlet, second inlet and second outlet; Said first inlet and first outlet are communicated with said serum pot through pipeline respectively, and said circulating pump is arranged on the pipeline between said first inlet and the said serum pot, and said spool has the duct; Through rotating said spool, the said first inlet passing hole channel is communicated with first outlet or the said second inlet passing hole channel and second is exported to be communicated with.
Inventor of the present invention considers that catalyst is solid-state molecule; In order to realize the quantitative injection of catalyst; Can catalyst be configured to have the catalyst slurry of fixed catalytic agent content; Can guarantee to get access to identical catalyst content through the catalyst slurry that obtains fixed volume at every turn at every turn, realize the quantitative injection of catalyst thus.Therefore; Inventor of the present invention provides a kind of quantitative injection device to be used for the small-sized aggregation test of catalyst, and the catalyst of scheduled volume is mixed the catalyst slurry that has the fixed catalytic agent content with formation with predetermined amount of liquid in serum pot, can at first the spool of two access valve in this quantitative injection device be arranged so that first inlet and the hole link of first outlet through spool of two access valve; Thus; Adopt circulating pump to drive, catalyst slurry can be by drawing in the serum pot, first inlet of two access valve of passing through, duct and first outlet; Flow back in the serum pot again; Formation circulates, and in this process, has been full of the catalyst slurry that flows in the duct of the spool of two access valve.When needs during with the catalyst injecting reactor, can second outlet of two access valve be communicated to inside reactor, rotate the spool of two access valve afterwards; Make second of two access valve enter the mouth and the hole link of second outlet through spool; At this moment, because the partition effect of spool, first inlet is in obstructed state with first outlet; Can realize that catalyst injects through the gas that feeds certain pressure in second porch; Under the effect of the gas pressure of second porch, can only all flow in the polymer reactor from the catalyst slurry of serum pot through second outlet, accomplish the injection of a catalyst.After accomplishing the catalyst injection; Can the spool of two access valve be arranged so that once more first inlet and the hole link of first outlet of two access valve through spool; And cut off second inlet and second outlet, and recover the circulation of catalyst slurry, think that next time catalyst injects to prepare.Because the duct of the spool of two access valve has fixing capacity; Therefore; When need accomplishing catalyst and injecting, only need the spool of two access valve be arranged so that second inlet and the hole link of second outlet of two access valve when each, in the whole injecting reactors of catalyst slurry that are full of in just can duct with spool through spool; To realize the quantitative injection of catalyst, do not need to carry out weighing at every turn.Through the content of catalyst and the volume in corresponding spool duct in the catalyst solution that disposed of adjustment, can obtain needed catalyst amount (this consumption is the catalyst content in the catalyst solution in the duct).
Adopt quantitative injection device provided by the invention to carry out the small-sized aggregation test of catalyst; Only need be when the configuration catalyst solution once with the catalyst weighing; Each time catalyst injects and not to need to carry out weighing again afterwards; Accurately simple, can reduce the interference of human factor effectively to experimental result, improve conventional efficient simultaneously greatly.
Description of drawings
Fig. 1 is the structural representation of quantitative injection device provided by the invention;
Fig. 2 is the structural representation of a kind of preferred implementation of quantitative injection device provided by the invention;
Fig. 3 is the longitudinal sectional drawing of the right side view of two access valve under a kind of user mode in the quantitative injection device provided by the invention;
Fig. 4 is the longitudinal sectional drawing of the right side view of two access valve under another kind of user mode in the quantitative injection device provided by the invention;
Fig. 5 is the structural representation of the another kind of preferred implementation of quantitative injection device provided by the invention.
The specific embodiment
Below in conjunction with accompanying drawing quantitative injection device provided by the invention is done further detailed description.
As shown in Figure 1, quantitative injection device provided by the invention comprises serum pot 2, slurries reversing unit 22 and circulating pump 4; Said slurries reversing unit 22 comprises two access valve 1; The spool 15 that this two access valve 1 has valve seat 14 and is arranged on valve seat 14 inside rotationally; Said valve seat 14 is provided with 17 and second outlet 18 of first inlet, 19, first outlet, 20, second inlet; 19 and first outlet 20 of said first inlet is communicated with said serum pot 2 through pipeline respectively; Said circulating pump 4 is arranged on the pipeline between said first inlet 19 and the said serum pot 2; Said spool 15 has duct 16, through rotating said spool 15, said first inlet, 19 passing hole channels 16 is communicated with first outlet 20 or makes said second inlet, 17 passing hole channels 16 and second export 18 to be communicated with.
Said serum pot 2 is used for adding and taking up catalyst and liquid, forms catalyst slurry so that mix within it.Said liquid only is used for catalyst mix so that carrying catalyst circulates at the quantitative pipeline of injection device, and said liquid can not mix with catalyst.For example for polyolefin catalyst, said liquid can be hexane, can process the polyolefin catalyst slurries through hexane is mixed with polyolefin catalyst, to be implemented in circulating in the quantitative injection device.
For the catalyst content in the catalyst slurry that guarantees each volume is identical, need catalyst in the serum pot 2 and liquid evenly be stirred, so that its even mixing.Under the preferable case, as shown in Figure 2, be provided with agitating device 3 in the serum pot 2, to be used for evenly stirring catalyst and liquid.Said agitating device 3 can be sheet, multiple tooth shape, netted or the like.Under the preferable case, said agitating device 3 is propeller blade type or rake type.Can drive agitating device 3 rotations through type of drive habitual in this area such as manual, pneumatic, electronic to stir, no longer the type of drive of agitating device 3 given unnecessary details at this.
Said circulating pump 4 is a liquid circulation pump, and its import is communicated with serum pot 2, and outlet is connected to first inlet 19 of two access valve 1; Its operation principle be cause import and export through rotation pressure differential to order about liquid flow; Thus, under the driving of circulating pump 4, introduce by the import of circulating pump 4 from the catalyst slurry of serum pot 2; Outlet by circulating pump 4 is exported, and enters into two access valve 1 via first inlet 19 of two access valve 1.
The spool 15 that said two access valve 1 have valve seat 14 and are arranged on valve seat 14 inside rotationally; 17 and second outlet 18 of first inlet, 19, first outlet, 20, second inlet is separately positioned on the valve seat 14; First inlet 19 is used for coming to 1 introducing of two access valve the catalyst slurry of self-circulating pump 4; First outlet 20 is communicated with serum pot 2, is used for catalyst slurry is outputed to serum pot 20; Said spool 15 has duct 16, through rotational valve core 15, first inlet, 19 passing hole channels 16 is communicated with first outlet 20 or makes second inlet, 17 passing hole channels 16 and second export 18 to be communicated with.
Fig. 3 makes first inlet, 19 passing hole channels 16 and first export 20 when being communicated with, the longitudinal sectional drawing of the right side view of two access valve 1 for the position of spool 15 is in.As shown in Figure 3, first inlet 19, duct 16 and first outlet 20 form passages, and second inlet, 17 and second outlet 18 this moment is owing to the obstructs of spool 15 are in obstructed state.Thus, can flow through first inlet 19, duct 16 and first outlet 20 flow back in the serum pot 2 again from the catalyst slurry of serum pot 2.Fig. 4 makes second inlet, 17 passing hole channels 16 and second export 18 when being communicated with, the longitudinal sectional drawing of the right side view of two access valve 1 for the position of spool 15 is in.As shown in Figure 4; Second inlet 17, duct 16 and second outlet 18 form passages; At this moment, 19 and first outlet 20 of first inlet is because the obstruct of spool 15 is in obstructed state, and the catalyst slurry of filling in the duct 16 can only flow out from 17 or second outlet 18 of second inlet.
The rotation of said spool 15 can realize through type of drive habitual in this area such as manual, pneumatic, electronic, no longer give unnecessary details at this.In order to guarantee to form passage; The axial line of first inlet, 19, first outlet, 20, second inlet, 17 and second outlet 18 need be positioned at same plane; And for guarantee catalyst slurry circulate and non-cohesive on the hole wall in duct 16; Under the preferable case, the axial line in said duct 16 is that the hole wall in straight line and duct 16 is smooth, said first inlet, 19, first outlet, 20, second inlet, 17 and second outlet, 18 equal angles settings on valve seat 14.Thus; The axial line of the passage that the axial line of the passage that 19 and first outlet 20 of first inlet forms forms perpendicular to 17 and second outlet 18 of second inlet, can through spool 15 is carried out 90 back and forth rotation first inlet, 19 passing hole channels 16 are communicated with perhaps make second 17 passing hole channels 16 and second that enter the mouth to export 18 and be communicated with first outlet 20.
In order to realize the injection of catalyst, can second outlet 18 be communicated with test-reactor, through inject the gas of certain pressure at second inlet, 17 places, can the catalyst slurry of filling in the duct 16 be exported 18 through second and be pressed in the test-reactor.Under the preferable case; In the quantitative injection device provided by the invention; Slurries reversing unit 22 also comprises reactor 13; Second outlet 18 of said two access valve 1 is communicated with said reactor 13 through pipeline, and said reactor 13 is used to take up the catalyst solution of injection, uses catalyst to obtain quantitative test.
In order to guarantee that the catalyst solution in the duct 16 all is pressed in the reactor 13; With attached catalyst slurries on the hole wall of avoiding duct 16; The catalyst that obtained of influence quantitatively; The gas pressure that injects at second inlet, 17 places of two access valve 1 need be higher than the air pressure of reactor 13, and under the preferable case, the gas pressure that second inlet, 17 places are injected need exceed 0.2kg/cm than the air pressure of reactor 13
2Under the preferable case, said slurries reversing unit 22 also comprises measuring tank 5, and second inlet 17 of said two access valve 1 is communicated with this measuring tank 5 through pipeline, and this measuring tank 5 has gas access 6.Can inject quantitative gas to measuring tank 5 through gas access 6, with the draught head in the reactor 13 is satisfied catalyst slurry in the duct 16 all is pressed into the requirement in the reactor 13 to guarantee measuring tank 5.Can after each time catalyst slurry being pressed into reactor 13, in measuring tank 5, refill quantitative gas, satisfy at any time that with the gas pressure in the assurance measuring tank 5 catalyst slurry in the duct 16 all is pressed into the requirement in the reactor 13.
Because when carrying out small-sized aggregation test; Catalyst consumption is measured with the milligram level usually, and therefore in order to guarantee that the catalyst content in the catalyst slurry satisfies the test needs in the duct 16, the volume in duct 16 need be provided with enough for a short time; Cause easily thus that the volatilization owing to liquid in the low dose of catalyst slurry causes on the hole wall of catalyst attached to duct 16 in the process of catalyst slurry injecting reactor 13; The catalyst that obtained of influence quantitatively, therefore, under the preferable case; In the quantitative injection device provided by the invention; Said measuring tank 5 also has liquid inlet 7, can inject certain amount of fluid to measuring tank 5 through liquid inlet 7, thus; Low dose of catalyst slurry in the duct 16 and the liquid mixing of being injected are pressed into reactor 13 together, have avoided evaporating and the quantitative minimizing of catalyst that causes being obtained.
When adopting quantitative injection device provided by the invention to carry out the small-sized aggregation test of catalyst; At first the catalyst with scheduled volume mixes the catalyst slurry that has the fixed catalytic agent content with formation with predetermined amount of liquid in serum pot; Through the content of catalyst and the volume in corresponding duct 16 in the catalyst solution that disposed of adjustment, can obtain needed catalyst amount (this consumption promptly is full of the catalyst content in the catalyst solution in duct 16).
At first the spool 15 with two access valve 1 is arranged so that first inlet 19 of two access valve 1 is communicated with first outlet, 20 ducts 16 through spool 15; Through the driving of circulating pump 1, catalyst slurry is drawn by serum pot 2, two access valve 1 of passing through first the inlet 19, duct 16 and first the outlet 20; Flow back to serum pot 2 again; Constitute circulation, at this moment, be full of the catalyst slurry that flows in the duct 16 of the spool 15 of two access valve 1; And because the partition effect of spool 15,17 and second outlet 18 of second inlet is in obstructed state; When needs during with catalyst injecting reactor 13; Rotate the spool 15 of two access valve 1, make second inlet 17 of two access valve 1 be communicated with, at this moment with second outlet, 18 ducts 16 through spool 15; Because the partition effect of spool 15,19 and first outlet 20 of first inlet is in obstructed state; At this moment; Because second inlet 17 is communicated with second outlet 18; Gas from measuring tank 5 is injected in the duct 16 through second inlet 17; Under the effect of second inlet, 17 gas pressure, the catalyst slurry in the duct 16 can only all be pressed in the reactor 13 through second outlet 18, accomplishes the injection of a catalyst.After accomplishing the catalyst injection; First inlet 19 that can the spool 15 of two access valve 1 be arranged so that once more two access valve 1 is communicated with first outlet, 20 ducts 16 through spool 15; Export 18 and cut off second inlet 17 and second; Recover the circulation of catalyst slurry, think that next time catalyst injects to prepare.
Therefore; Adopt quantitative injection device provided by the invention, when each when need accomplishing catalyst and injecting, second inlet 17 and second that only need the spool 15 of two access valve 1 be arranged so that two access valve 1 exports 18 ducts 16 through spool 15 and is communicated with; In the whole injecting reactors 13 of catalyst slurry that are full of in just can duct 16 with spool 15; To realize the quantitative injection of catalyst, do not need to carry out weighing at every turn, process is simple; And the capacity in duct 16 of supposing the spool 15 of two access valve 1 is the V milliliter; The used catalyst of mixing manufacture catalyst slurry is the W gram in serum pot 2; Mixing uses liquid to be the M milliliter; The catalyst that then at every turn injects to reactor quantitatively be: V*W/M, can guarantee the quantitative injection of each catalyst, weighing is accurate.
Carry out the requirement of a plurality of aggregation tests simultaneously in order to satisfy; Under the preferable case, as shown in Figure 5, in the quantitative injection device provided by the invention; Said slurries reversing unit 22 has a plurality of; A plurality of slurries reversing units (22) parallel connection is provided with, and first inlet 19 of two access valve 1 of each slurries reversing unit 22 links together, and first outlet 20 of two access valve 1 of each slurries reversing unit 22 links together.Thus, the slurries reversing unit 22 of respective numbers can be set according to the quantity of aggregation test, to satisfy the requirement of various polymerization test.
Though the present invention is disclosed through above-mentioned embodiment, yet above-mentioned embodiment is not that those skilled in the art under any the present invention are not breaking away from the spirit and scope of the present invention, should do various changes and modification in order to qualification the present invention.Therefore protection scope of the present invention should be as the criterion with the scope that appended claims was defined.
Claims (7)
1. quantitative injection device, wherein, this quantitative injection device comprises serum pot (2), slurries reversing unit (22) and circulating pump (4); Said slurries reversing unit (22) comprises two access valve (1); This two access valve (1) has valve seat (14) and is arranged on the inner spool (15) of valve seat (14) rotationally; Said valve seat (14) is provided with first inlet (19), first outlet (20), second inlet (17) and second outlet (18); Said first inlet (19) and first outlet (20) are communicated with said serum pot (2) through pipeline respectively; Said circulating pump (4) is arranged on the pipeline between said first inlet (19) and the said serum pot (2); Said spool (15) has duct (16), through rotating said spool (15), said first inlet (19) passing hole channel (16) is communicated with first outlet (20) or makes said second inlet (17) passing hole channel (16) and second export (18) to be communicated with.
2. quantitative injection device according to claim 1 wherein, is provided with agitating device (3) in the said serum pot (2).
3. quantitative injection device according to claim 1, wherein, said first inlet (19), first outlet (20), second inlet (17) and second outlet (18) are gone up the equal angles setting at valve seat (14).
4. quantitative injection device according to claim 1, wherein, said slurries reversing unit (22) also comprises measuring tank (5), and second inlet (17) of said two access valve (1) is communicated with this measuring tank (5) through pipeline, and this measuring tank (5) has gas access (6).
5. quantitative injection device according to claim 4, wherein, said measuring tank (5) also has liquid inlet (7).
6. quantitative injection device according to claim 1, wherein, said slurries reversing unit (22) also comprises reactor (13), second outlet (18) of said two access valve (1) is communicated with said reactor (13) through pipeline.
7. according to the described quantitative injection device of each claim among the claim 1-6; Wherein, Said slurries reversing unit (22) has a plurality of; A plurality of slurries reversing units (22) parallel connection is provided with, and first inlet (19) of two access valve (1) of each slurries reversing unit (22) links together, and first outlet (20) of two access valve (1) of each slurries reversing unit (22) links together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010520019.0A CN102451646B (en) | 2010-10-20 | 2010-10-20 | Quantitative injection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010520019.0A CN102451646B (en) | 2010-10-20 | 2010-10-20 | Quantitative injection device |
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| Publication Number | Publication Date |
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| CN102451646A true CN102451646A (en) | 2012-05-16 |
| CN102451646B CN102451646B (en) | 2014-03-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201010520019.0A Active CN102451646B (en) | 2010-10-20 | 2010-10-20 | Quantitative injection device |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4767028A (en) * | 1983-12-02 | 1988-08-30 | Phillips Petroleum Company | Rotary valve |
| CN2312065Y (en) * | 1997-09-04 | 1999-03-31 | 中国石化扬子石油化工公司 | Apparatus for automatically feeding catalyst |
| CN1927440A (en) * | 2005-09-09 | 2007-03-14 | 中国石油化工股份有限公司 | Slurry or liquid catalyst feeding device |
| CN101724109A (en) * | 2008-10-30 | 2010-06-09 | 中国石油化工股份有限公司 | Device of catalyst feed pipeline for olefin polymerization process |
-
2010
- 2010-10-20 CN CN201010520019.0A patent/CN102451646B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4767028A (en) * | 1983-12-02 | 1988-08-30 | Phillips Petroleum Company | Rotary valve |
| CN2312065Y (en) * | 1997-09-04 | 1999-03-31 | 中国石化扬子石油化工公司 | Apparatus for automatically feeding catalyst |
| CN1927440A (en) * | 2005-09-09 | 2007-03-14 | 中国石油化工股份有限公司 | Slurry or liquid catalyst feeding device |
| CN101724109A (en) * | 2008-10-30 | 2010-06-09 | 中国石油化工股份有限公司 | Device of catalyst feed pipeline for olefin polymerization process |
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| Publication number | Publication date |
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| CN102451646B (en) | 2014-03-12 |
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